author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 58654 | 562bf1878089 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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// no precompiled headers |
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#include "jvm.h" |
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#include "classfile/classLoader.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "code/icBuffer.hpp" |
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#include "code/vtableStubs.hpp" |
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#include "compiler/compileBroker.hpp" |
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#include "compiler/disassembler.hpp" |
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#include "interpreter/interpreter.hpp" |
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#include "logging/log.hpp" |
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#include "logging/logStream.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/filemap.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "os_linux.inline.hpp" |
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#include "os_posix.inline.hpp" |
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#include "os_share_linux.hpp" |
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#include "osContainer_linux.hpp" |
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#include "prims/jniFastGetField.hpp" |
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#include "prims/jvm_misc.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/atomic.hpp" |
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#include "runtime/extendedPC.hpp" |
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#include "runtime/globals.hpp" |
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#include "runtime/interfaceSupport.inline.hpp" |
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#include "runtime/init.hpp" |
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#include "runtime/java.hpp" |
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#include "runtime/javaCalls.hpp" |
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#include "runtime/mutexLocker.hpp" |
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#include "runtime/objectMonitor.hpp" |
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#include "runtime/orderAccess.hpp" |
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#include "runtime/osThread.hpp" |
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#include "runtime/perfMemory.hpp" |
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#include "runtime/sharedRuntime.hpp" |
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#include "runtime/statSampler.hpp" |
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#include "runtime/stubRoutines.hpp" |
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#include "runtime/thread.inline.hpp" |
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#include "runtime/threadCritical.hpp" |
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#include "runtime/threadSMR.hpp" |
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#include "runtime/timer.hpp" |
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#include "runtime/vm_version.hpp" |
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#include "semaphore_posix.hpp" |
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#include "services/attachListener.hpp" |
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#include "services/memTracker.hpp" |
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#include "services/runtimeService.hpp" |
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#include "utilities/align.hpp" |
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#include "utilities/decoder.hpp" |
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#include "utilities/defaultStream.hpp" |
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#include "utilities/events.hpp" |
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#include "utilities/elfFile.hpp" |
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#include "utilities/growableArray.hpp" |
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#include "utilities/macros.hpp" |
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#include "utilities/vmError.hpp" |
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// put OS-includes here |
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# include <sys/types.h> |
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# include <sys/mman.h> |
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# include <sys/stat.h> |
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# include <sys/select.h> |
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# include <pthread.h> |
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# include <signal.h> |
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# include <endian.h> |
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# include <errno.h> |
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# include <dlfcn.h> |
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# include <stdio.h> |
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# include <unistd.h> |
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# include <sys/resource.h> |
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# include <pthread.h> |
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# include <sys/stat.h> |
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# include <sys/time.h> |
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# include <sys/times.h> |
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# include <sys/utsname.h> |
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# include <sys/socket.h> |
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# include <sys/wait.h> |
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# include <pwd.h> |
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# include <poll.h> |
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# include <fcntl.h> |
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# include <string.h> |
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# include <syscall.h> |
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# include <sys/sysinfo.h> |
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# include <gnu/libc-version.h> |
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# include <sys/ipc.h> |
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# include <sys/shm.h> |
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# include <link.h> |
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# include <stdint.h> |
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# include <inttypes.h> |
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# include <sys/ioctl.h> |
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#ifndef _GNU_SOURCE |
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#define _GNU_SOURCE |
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#include <sched.h> |
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#undef _GNU_SOURCE |
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#else |
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#include <sched.h> |
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#endif |
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// if RUSAGE_THREAD for getrusage() has not been defined, do it here. The code calling |
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// getrusage() is prepared to handle the associated failure. |
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#ifndef RUSAGE_THREAD |
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#define RUSAGE_THREAD (1) /* only the calling thread */ |
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#endif |
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#define MAX_PATH (2 * K) |
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#define MAX_SECS 100000000 |
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// for timer info max values which include all bits |
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#define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) |
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enum CoredumpFilterBit { |
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FILE_BACKED_PVT_BIT = 1 << 2, |
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FILE_BACKED_SHARED_BIT = 1 << 3, |
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LARGEPAGES_BIT = 1 << 6, |
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DAX_SHARED_BIT = 1 << 8 |
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}; |
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//////////////////////////////////////////////////////////////////////////////// |
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// global variables |
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julong os::Linux::_physical_memory = 0; |
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||
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address os::Linux::_initial_thread_stack_bottom = NULL; |
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uintptr_t os::Linux::_initial_thread_stack_size = 0; |
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int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL; |
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int (*os::Linux::_pthread_setname_np)(pthread_t, const char*) = NULL; |
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pthread_t os::Linux::_main_thread; |
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int os::Linux::_page_size = -1; |
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bool os::Linux::_supports_fast_thread_cpu_time = false; |
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const char * os::Linux::_glibc_version = NULL; |
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const char * os::Linux::_libpthread_version = NULL; |
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static jlong initial_time_count=0; |
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158 |
||
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static int clock_tics_per_sec = 100; |
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||
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// If the VM might have been created on the primordial thread, we need to resolve the |
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// primordial thread stack bounds and check if the current thread might be the |
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// primordial thread in places. If we know that the primordial thread is never used, |
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// such as when the VM was created by one of the standard java launchers, we can |
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// avoid this |
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static bool suppress_primordial_thread_resolution = false; |
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// For diagnostics to print a message once. see run_periodic_checks |
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static sigset_t check_signal_done; |
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static bool check_signals = true; |
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// Signal number used to suspend/resume a thread |
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// do not use any signal number less than SIGSEGV, see 4355769 |
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static int SR_signum = SIGUSR2; |
176 |
sigset_t SR_sigset; |
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177 |
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178 |
// utility functions |
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179 |
||
180 |
static int SR_initialize(); |
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181 |
||
182 |
julong os::available_memory() { |
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183 |
return Linux::available_memory(); |
|
184 |
} |
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185 |
||
186 |
julong os::Linux::available_memory() { |
|
187 |
// values in struct sysinfo are "unsigned long" |
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188 |
struct sysinfo si; |
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julong avail_mem; |
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|
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if (OSContainer::is_containerized()) { |
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jlong mem_limit, mem_usage; |
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if ((mem_limit = OSContainer::memory_limit_in_bytes()) < 1) { |
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log_debug(os, container)("container memory limit %s: " JLONG_FORMAT ", using host value", |
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mem_limit == OSCONTAINER_ERROR ? "failed" : "unlimited", mem_limit); |
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} |
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if (mem_limit > 0 && (mem_usage = OSContainer::memory_usage_in_bytes()) < 1) { |
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log_debug(os, container)("container memory usage failed: " JLONG_FORMAT ", using host value", mem_usage); |
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} |
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if (mem_limit > 0 && mem_usage > 0 ) { |
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avail_mem = mem_limit > mem_usage ? (julong)mem_limit - (julong)mem_usage : 0; |
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log_trace(os)("available container memory: " JULONG_FORMAT, avail_mem); |
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return avail_mem; |
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} |
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} |
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1 | 207 |
sysinfo(&si); |
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avail_mem = (julong)si.freeram * si.mem_unit; |
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log_trace(os)("available memory: " JULONG_FORMAT, avail_mem); |
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return avail_mem; |
1 | 211 |
} |
212 |
||
213 |
julong os::physical_memory() { |
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jlong phys_mem = 0; |
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if (OSContainer::is_containerized()) { |
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jlong mem_limit; |
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if ((mem_limit = OSContainer::memory_limit_in_bytes()) > 0) { |
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log_trace(os)("total container memory: " JLONG_FORMAT, mem_limit); |
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return mem_limit; |
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} |
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log_debug(os, container)("container memory limit %s: " JLONG_FORMAT ", using host value", |
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mem_limit == OSCONTAINER_ERROR ? "failed" : "unlimited", mem_limit); |
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223 |
} |
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224 |
|
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phys_mem = Linux::physical_memory(); |
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log_trace(os)("total system memory: " JLONG_FORMAT, phys_mem); |
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227 |
return phys_mem; |
1 | 228 |
} |
229 |
||
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static uint64_t initial_total_ticks = 0; |
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static uint64_t initial_steal_ticks = 0; |
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static bool has_initial_tick_info = false; |
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233 |
|
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234 |
static void next_line(FILE *f) { |
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int c; |
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do { |
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c = fgetc(f); |
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238 |
} while (c != '\n' && c != EOF); |
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239 |
} |
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240 |
|
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241 |
bool os::Linux::get_tick_information(CPUPerfTicks* pticks, int which_logical_cpu) { |
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242 |
FILE* fh; |
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243 |
uint64_t userTicks, niceTicks, systemTicks, idleTicks; |
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244 |
// since at least kernel 2.6 : iowait: time waiting for I/O to complete |
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// irq: time servicing interrupts; softirq: time servicing softirqs |
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246 |
uint64_t iowTicks = 0, irqTicks = 0, sirqTicks= 0; |
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247 |
// steal (since kernel 2.6.11): time spent in other OS when running in a virtualized environment |
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248 |
uint64_t stealTicks = 0; |
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249 |
// guest (since kernel 2.6.24): time spent running a virtual CPU for guest OS under the |
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250 |
// control of the Linux kernel |
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251 |
uint64_t guestNiceTicks = 0; |
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252 |
int logical_cpu = -1; |
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253 |
const int required_tickinfo_count = (which_logical_cpu == -1) ? 4 : 5; |
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254 |
int n; |
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|
255 |
|
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|
256 |
memset(pticks, 0, sizeof(CPUPerfTicks)); |
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|
257 |
|
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|
258 |
if ((fh = fopen("/proc/stat", "r")) == NULL) { |
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|
259 |
return false; |
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|
260 |
} |
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|
261 |
|
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|
262 |
if (which_logical_cpu == -1) { |
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263 |
n = fscanf(fh, "cpu " UINT64_FORMAT " " UINT64_FORMAT " " UINT64_FORMAT " " |
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|
264 |
UINT64_FORMAT " " UINT64_FORMAT " " UINT64_FORMAT " " UINT64_FORMAT " " |
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|
265 |
UINT64_FORMAT " " UINT64_FORMAT " ", |
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|
266 |
&userTicks, &niceTicks, &systemTicks, &idleTicks, |
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|
267 |
&iowTicks, &irqTicks, &sirqTicks, |
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268 |
&stealTicks, &guestNiceTicks); |
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|
269 |
} else { |
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270 |
// Move to next line |
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271 |
next_line(fh); |
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|
272 |
|
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273 |
// find the line for requested cpu faster to just iterate linefeeds? |
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274 |
for (int i = 0; i < which_logical_cpu; i++) { |
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275 |
next_line(fh); |
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276 |
} |
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277 |
|
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278 |
n = fscanf(fh, "cpu%u " UINT64_FORMAT " " UINT64_FORMAT " " UINT64_FORMAT " " |
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279 |
UINT64_FORMAT " " UINT64_FORMAT " " UINT64_FORMAT " " UINT64_FORMAT " " |
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280 |
UINT64_FORMAT " " UINT64_FORMAT " ", |
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281 |
&logical_cpu, &userTicks, &niceTicks, |
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282 |
&systemTicks, &idleTicks, &iowTicks, &irqTicks, &sirqTicks, |
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283 |
&stealTicks, &guestNiceTicks); |
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|
284 |
} |
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|
285 |
|
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|
286 |
fclose(fh); |
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|
287 |
if (n < required_tickinfo_count || logical_cpu != which_logical_cpu) { |
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|
288 |
return false; |
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|
289 |
} |
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|
290 |
pticks->used = userTicks + niceTicks; |
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|
291 |
pticks->usedKernel = systemTicks + irqTicks + sirqTicks; |
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292 |
pticks->total = userTicks + niceTicks + systemTicks + idleTicks + |
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|
293 |
iowTicks + irqTicks + sirqTicks + stealTicks + guestNiceTicks; |
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|
294 |
|
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|
295 |
if (n > required_tickinfo_count + 3) { |
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|
296 |
pticks->steal = stealTicks; |
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|
297 |
pticks->has_steal_ticks = true; |
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|
298 |
} else { |
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|
299 |
pticks->steal = 0; |
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|
300 |
pticks->has_steal_ticks = false; |
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|
301 |
} |
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|
302 |
|
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|
303 |
return true; |
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|
304 |
} |
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|
305 |
|
1 | 306 |
// Return true if user is running as root. |
307 |
||
308 |
bool os::have_special_privileges() { |
|
309 |
static bool init = false; |
|
310 |
static bool privileges = false; |
|
311 |
if (!init) { |
|
312 |
privileges = (getuid() != geteuid()) || (getgid() != getegid()); |
|
313 |
init = true; |
|
314 |
} |
|
315 |
return privileges; |
|
316 |
} |
|
317 |
||
318 |
||
319 |
#ifndef SYS_gettid |
|
320 |
// i386: 224, ia64: 1105, amd64: 186, sparc 143 |
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321 |
#ifdef __ia64__ |
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322 |
#define SYS_gettid 1105 |
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323 |
#else |
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|
324 |
#ifdef __i386__ |
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325 |
#define SYS_gettid 224 |
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326 |
#else |
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327 |
#ifdef __amd64__ |
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328 |
#define SYS_gettid 186 |
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329 |
#else |
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|
330 |
#ifdef __sparc__ |
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331 |
#define SYS_gettid 143 |
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|
332 |
#else |
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|
333 |
#error define gettid for the arch |
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|
334 |
#endif |
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|
335 |
#endif |
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|
336 |
#endif |
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|
337 |
#endif |
1 | 338 |
#endif |
339 |
||
340 |
||
341 |
// pid_t gettid() |
|
342 |
// |
|
343 |
// Returns the kernel thread id of the currently running thread. Kernel |
|
344 |
// thread id is used to access /proc. |
|
345 |
pid_t os::Linux::gettid() { |
|
346 |
int rslt = syscall(SYS_gettid); |
|
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|
347 |
assert(rslt != -1, "must be."); // old linuxthreads implementation? |
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|
348 |
return (pid_t)rslt; |
1 | 349 |
} |
350 |
||
351 |
// Most versions of linux have a bug where the number of processors are |
|
352 |
// determined by looking at the /proc file system. In a chroot environment, |
|
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|
353 |
// the system call returns 1. |
1 | 354 |
static bool unsafe_chroot_detected = false; |
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|
355 |
static const char *unstable_chroot_error = "/proc file system not found.\n" |
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parents:
388
diff
changeset
|
356 |
"Java may be unstable running multithreaded in a chroot " |
47129a5cacd3
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
388
diff
changeset
|
357 |
"environment on Linux when /proc filesystem is not mounted."; |
1 | 358 |
|
359 |
void os::Linux::initialize_system_info() { |
|
4493
9204129f065e
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
4487
diff
changeset
|
360 |
set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
9204129f065e
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
4487
diff
changeset
|
361 |
if (processor_count() == 1) { |
1 | 362 |
pid_t pid = os::Linux::gettid(); |
363 |
char fname[32]; |
|
364 |
jio_snprintf(fname, sizeof(fname), "/proc/%d", pid); |
|
365 |
FILE *fp = fopen(fname, "r"); |
|
366 |
if (fp == NULL) { |
|
367 |
unsafe_chroot_detected = true; |
|
368 |
} else { |
|
369 |
fclose(fp); |
|
370 |
} |
|
371 |
} |
|
372 |
_physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); |
|
4493
9204129f065e
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
4487
diff
changeset
|
373 |
assert(processor_count() > 0, "linux error"); |
1 | 374 |
} |
375 |
||
376 |
void os::init_system_properties_values() { |
|
377 |
// The next steps are taken in the product version: |
|
378 |
// |
|
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
379 |
// Obtain the JAVA_HOME value from the location of libjvm.so. |
1 | 380 |
// This library should be located at: |
42633
0c23e9d8fccf
8066474: Remove the lib/ directory from Linux and Solaris images
erikj
parents:
42062
diff
changeset
|
381 |
// <JAVA_HOME>/lib/{client|server}/libjvm.so. |
1 | 382 |
// |
383 |
// If "/jre/lib/" appears at the right place in the path, then we |
|
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
384 |
// assume libjvm.so is installed in a JDK and we use this path. |
1 | 385 |
// |
386 |
// Otherwise exit with message: "Could not create the Java virtual machine." |
|
387 |
// |
|
388 |
// The following extra steps are taken in the debugging version: |
|
389 |
// |
|
390 |
// If "/jre/lib/" does NOT appear at the right place in the path |
|
391 |
// instead of exit check for $JAVA_HOME environment variable. |
|
392 |
// |
|
393 |
// If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, |
|
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
394 |
// then we append a fake suffix "hotspot/libjvm.so" to this path so |
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
395 |
// it looks like libjvm.so is installed there |
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
396 |
// <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
1 | 397 |
// |
398 |
// Otherwise exit. |
|
399 |
// |
|
400 |
// Important note: if the location of libjvm.so changes this |
|
401 |
// code needs to be changed accordingly. |
|
402 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
403 |
// See ld(1): |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
404 |
// The linker uses the following search paths to locate required |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
405 |
// shared libraries: |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
406 |
// 1: ... |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
407 |
// ... |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
408 |
// 7: The default directories, normally /lib and /usr/lib. |
52734
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
409 |
#ifndef OVERRIDE_LIBPATH |
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
410 |
#if defined(AMD64) || (defined(_LP64) && defined(SPARC)) || defined(PPC64) || defined(S390) |
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
411 |
#define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib" |
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
412 |
#else |
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
413 |
#define DEFAULT_LIBPATH "/lib:/usr/lib" |
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
414 |
#endif |
1885
ae1dcaf4363f
6778662: fixes 64-bits libraries directory search paths on linux
kvn
parents:
1664
diff
changeset
|
415 |
#else |
52734
d537553ed639
8214332: Add a flag for overriding default JNI library search path
dholmes
parents:
52581
diff
changeset
|
416 |
#define DEFAULT_LIBPATH OVERRIDE_LIBPATH |
1885
ae1dcaf4363f
6778662: fixes 64-bits libraries directory search paths on linux
kvn
parents:
1664
diff
changeset
|
417 |
#endif |
1 | 418 |
|
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
419 |
// Base path of extensions installed on the system. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
420 |
#define SYS_EXT_DIR "/usr/java/packages" |
1 | 421 |
#define EXTENSIONS_DIR "/lib/ext" |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
422 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
423 |
// Buffer that fits several sprintfs. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
424 |
// Note that the space for the colon and the trailing null are provided |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
425 |
// by the nulls included by the sizeof operator. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
426 |
const size_t bufsize = |
27562 | 427 |
MAX2((size_t)MAXPATHLEN, // For dll_dir & friends. |
428 |
(size_t)MAXPATHLEN + sizeof(EXTENSIONS_DIR) + sizeof(SYS_EXT_DIR) + sizeof(EXTENSIONS_DIR)); // extensions dir |
|
58083 | 429 |
char *buf = NEW_C_HEAP_ARRAY(char, bufsize, mtInternal); |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
430 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
431 |
// sysclasspath, java_home, dll_dir |
1 | 432 |
{ |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
433 |
char *pslash; |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
434 |
os::jvm_path(buf, bufsize); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
435 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
436 |
// Found the full path to libjvm.so. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
437 |
// Now cut the path to <java_home>/jre if we can. |
27471 | 438 |
pslash = strrchr(buf, '/'); |
439 |
if (pslash != NULL) { |
|
440 |
*pslash = '\0'; // Get rid of /libjvm.so. |
|
441 |
} |
|
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
442 |
pslash = strrchr(buf, '/'); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
443 |
if (pslash != NULL) { |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
444 |
*pslash = '\0'; // Get rid of /{client|server|hotspot}. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
445 |
} |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
446 |
Arguments::set_dll_dir(buf); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
447 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
448 |
if (pslash != NULL) { |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
449 |
pslash = strrchr(buf, '/'); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
450 |
if (pslash != NULL) { |
42633
0c23e9d8fccf
8066474: Remove the lib/ directory from Linux and Solaris images
erikj
parents:
42062
diff
changeset
|
451 |
*pslash = '\0'; // Get rid of /lib. |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
452 |
} |
1 | 453 |
} |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
454 |
Arguments::set_java_home(buf); |
50962
dbe8aa90d4dd
8205946: JVM crash after call to ClassLoader::setup_bootstrap_search_path()
ccheung
parents:
50956
diff
changeset
|
455 |
if (!set_boot_path('/', ':')) { |
dbe8aa90d4dd
8205946: JVM crash after call to ClassLoader::setup_bootstrap_search_path()
ccheung
parents:
50956
diff
changeset
|
456 |
vm_exit_during_initialization("Failed setting boot class path.", NULL); |
dbe8aa90d4dd
8205946: JVM crash after call to ClassLoader::setup_bootstrap_search_path()
ccheung
parents:
50956
diff
changeset
|
457 |
} |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
458 |
} |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
459 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
460 |
// Where to look for native libraries. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
461 |
// |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
462 |
// Note: Due to a legacy implementation, most of the library path |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
463 |
// is set in the launcher. This was to accomodate linking restrictions |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
464 |
// on legacy Linux implementations (which are no longer supported). |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
465 |
// Eventually, all the library path setting will be done here. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
466 |
// |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
467 |
// However, to prevent the proliferation of improperly built native |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
468 |
// libraries, the new path component /usr/java/packages is added here. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
469 |
// Eventually, all the library path setting will be done here. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
470 |
{ |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
471 |
// Get the user setting of LD_LIBRARY_PATH, and prepended it. It |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
472 |
// should always exist (until the legacy problem cited above is |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
473 |
// addressed). |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
474 |
const char *v = ::getenv("LD_LIBRARY_PATH"); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
475 |
const char *v_colon = ":"; |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
476 |
if (v == NULL) { v = ""; v_colon = ""; } |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
477 |
// That's +1 for the colon and +1 for the trailing '\0'. |
58083 | 478 |
char *ld_library_path = NEW_C_HEAP_ARRAY(char, |
479 |
strlen(v) + 1 + |
|
480 |
sizeof(SYS_EXT_DIR) + sizeof("/lib/") + sizeof(DEFAULT_LIBPATH) + 1, |
|
481 |
mtInternal); |
|
42633
0c23e9d8fccf
8066474: Remove the lib/ directory from Linux and Solaris images
erikj
parents:
42062
diff
changeset
|
482 |
sprintf(ld_library_path, "%s%s" SYS_EXT_DIR "/lib:" DEFAULT_LIBPATH, v, v_colon); |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
483 |
Arguments::set_library_path(ld_library_path); |
27880
afb974a04396
8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents:
27474
diff
changeset
|
484 |
FREE_C_HEAP_ARRAY(char, ld_library_path); |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
485 |
} |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
486 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
487 |
// Extensions directories. |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
488 |
sprintf(buf, "%s" EXTENSIONS_DIR ":" SYS_EXT_DIR EXTENSIONS_DIR, Arguments::get_java_home()); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
489 |
Arguments::set_ext_dirs(buf); |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
490 |
|
27880
afb974a04396
8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents:
27474
diff
changeset
|
491 |
FREE_C_HEAP_ARRAY(char, buf); |
23522
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
492 |
|
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
493 |
#undef DEFAULT_LIBPATH |
217a6a90aad3
8038201: Clean up misleading usage of malloc() in init_system_properties_values()
goetz
parents:
23479
diff
changeset
|
494 |
#undef SYS_EXT_DIR |
1 | 495 |
#undef EXTENSIONS_DIR |
496 |
} |
|
497 |
||
498 |
//////////////////////////////////////////////////////////////////////////////// |
|
499 |
// breakpoint support |
|
500 |
||
501 |
void os::breakpoint() { |
|
502 |
BREAKPOINT; |
|
503 |
} |
|
504 |
||
505 |
extern "C" void breakpoint() { |
|
506 |
// use debugger to set breakpoint here |
|
507 |
} |
|
508 |
||
509 |
//////////////////////////////////////////////////////////////////////////////// |
|
510 |
// signal support |
|
511 |
||
512 |
debug_only(static bool signal_sets_initialized = false); |
|
46507
7db40fa6eff7
8174231: Factor out and share PlatformEvent and Parker code for POSIX systems
dholmes
parents:
46442
diff
changeset
|
513 |
static sigset_t unblocked_sigs, vm_sigs; |
1 | 514 |
|
515 |
void os::Linux::signal_sets_init() { |
|
516 |
// Should also have an assertion stating we are still single-threaded. |
|
517 |
assert(!signal_sets_initialized, "Already initialized"); |
|
518 |
// Fill in signals that are necessarily unblocked for all threads in |
|
519 |
// the VM. Currently, we unblock the following signals: |
|
520 |
// SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden |
|
521 |
// by -Xrs (=ReduceSignalUsage)); |
|
522 |
// BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all |
|
523 |
// other threads. The "ReduceSignalUsage" boolean tells us not to alter |
|
524 |
// the dispositions or masks wrt these signals. |
|
525 |
// Programs embedding the VM that want to use the above signals for their |
|
526 |
// own purposes must, at this time, use the "-Xrs" option to prevent |
|
527 |
// interference with shutdown hooks and BREAK_SIGNAL thread dumping. |
|
528 |
// (See bug 4345157, and other related bugs). |
|
529 |
// In reality, though, unblocking these signals is really a nop, since |
|
530 |
// these signals are not blocked by default. |
|
531 |
sigemptyset(&unblocked_sigs); |
|
532 |
sigaddset(&unblocked_sigs, SIGILL); |
|
533 |
sigaddset(&unblocked_sigs, SIGSEGV); |
|
534 |
sigaddset(&unblocked_sigs, SIGBUS); |
|
535 |
sigaddset(&unblocked_sigs, SIGFPE); |
|
22848
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
536 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
537 |
sigaddset(&unblocked_sigs, SIGTRAP); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
538 |
#endif |
1 | 539 |
sigaddset(&unblocked_sigs, SR_signum); |
540 |
||
541 |
if (!ReduceSignalUsage) { |
|
50177
9806f23d5e5e
8134537: Much nearly duplicated code for sun.misc.Signal support
coleenp
parents:
49968
diff
changeset
|
542 |
if (!os::Posix::is_sig_ignored(SHUTDOWN1_SIGNAL)) { |
1 | 543 |
sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
544 |
} |
50177
9806f23d5e5e
8134537: Much nearly duplicated code for sun.misc.Signal support
coleenp
parents:
49968
diff
changeset
|
545 |
if (!os::Posix::is_sig_ignored(SHUTDOWN2_SIGNAL)) { |
1 | 546 |
sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
547 |
} |
50177
9806f23d5e5e
8134537: Much nearly duplicated code for sun.misc.Signal support
coleenp
parents:
49968
diff
changeset
|
548 |
if (!os::Posix::is_sig_ignored(SHUTDOWN3_SIGNAL)) { |
1 | 549 |
sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
550 |
} |
1 | 551 |
} |
552 |
// Fill in signals that are blocked by all but the VM thread. |
|
553 |
sigemptyset(&vm_sigs); |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
554 |
if (!ReduceSignalUsage) { |
1 | 555 |
sigaddset(&vm_sigs, BREAK_SIGNAL); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
556 |
} |
1 | 557 |
debug_only(signal_sets_initialized = true); |
558 |
||
559 |
} |
|
560 |
||
561 |
// These are signals that are unblocked while a thread is running Java. |
|
562 |
// (For some reason, they get blocked by default.) |
|
563 |
sigset_t* os::Linux::unblocked_signals() { |
|
564 |
assert(signal_sets_initialized, "Not initialized"); |
|
565 |
return &unblocked_sigs; |
|
566 |
} |
|
567 |
||
568 |
// These are the signals that are blocked while a (non-VM) thread is |
|
569 |
// running Java. Only the VM thread handles these signals. |
|
570 |
sigset_t* os::Linux::vm_signals() { |
|
571 |
assert(signal_sets_initialized, "Not initialized"); |
|
572 |
return &vm_sigs; |
|
573 |
} |
|
574 |
||
575 |
void os::Linux::hotspot_sigmask(Thread* thread) { |
|
576 |
||
577 |
//Save caller's signal mask before setting VM signal mask |
|
578 |
sigset_t caller_sigmask; |
|
579 |
pthread_sigmask(SIG_BLOCK, NULL, &caller_sigmask); |
|
580 |
||
581 |
OSThread* osthread = thread->osthread(); |
|
582 |
osthread->set_caller_sigmask(caller_sigmask); |
|
583 |
||
584 |
pthread_sigmask(SIG_UNBLOCK, os::Linux::unblocked_signals(), NULL); |
|
585 |
||
586 |
if (!ReduceSignalUsage) { |
|
587 |
if (thread->is_VM_thread()) { |
|
588 |
// Only the VM thread handles BREAK_SIGNAL ... |
|
589 |
pthread_sigmask(SIG_UNBLOCK, vm_signals(), NULL); |
|
590 |
} else { |
|
591 |
// ... all other threads block BREAK_SIGNAL |
|
592 |
pthread_sigmask(SIG_BLOCK, vm_signals(), NULL); |
|
593 |
} |
|
594 |
} |
|
595 |
} |
|
596 |
||
597 |
////////////////////////////////////////////////////////////////////////////// |
|
598 |
// detecting pthread library |
|
599 |
||
600 |
void os::Linux::libpthread_init() { |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
601 |
// Save glibc and pthread version strings. |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
602 |
#if !defined(_CS_GNU_LIBC_VERSION) || \ |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
603 |
!defined(_CS_GNU_LIBPTHREAD_VERSION) |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
604 |
#error "glibc too old (< 2.3.2)" |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
605 |
#endif |
1 | 606 |
|
607 |
size_t n = confstr(_CS_GNU_LIBC_VERSION, NULL, 0); |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
608 |
assert(n > 0, "cannot retrieve glibc version"); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
609 |
char *str = (char *)malloc(n, mtInternal); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
610 |
confstr(_CS_GNU_LIBC_VERSION, str, n); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
611 |
os::Linux::set_glibc_version(str); |
1 | 612 |
|
613 |
n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0); |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
614 |
assert(n > 0, "cannot retrieve pthread version"); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
615 |
str = (char *)malloc(n, mtInternal); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
616 |
confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
617 |
os::Linux::set_libpthread_version(str); |
1 | 618 |
} |
619 |
||
620 |
///////////////////////////////////////////////////////////////////////////// |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
621 |
// thread stack expansion |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
622 |
|
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
623 |
// os::Linux::manually_expand_stack() takes care of expanding the thread |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
624 |
// stack. Note that this is normally not needed: pthread stacks allocate |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
625 |
// thread stack using mmap() without MAP_NORESERVE, so the stack is already |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
626 |
// committed. Therefore it is not necessary to expand the stack manually. |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
627 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
628 |
// Manually expanding the stack was historically needed on LinuxThreads |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
629 |
// thread stacks, which were allocated with mmap(MAP_GROWSDOWN). Nowadays |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
630 |
// it is kept to deal with very rare corner cases: |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
631 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
632 |
// For one, user may run the VM on an own implementation of threads |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
633 |
// whose stacks are - like the old LinuxThreads - implemented using |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
634 |
// mmap(MAP_GROWSDOWN). |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
635 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
636 |
// Also, this coding may be needed if the VM is running on the primordial |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
637 |
// thread. Normally we avoid running on the primordial thread; however, |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
638 |
// user may still invoke the VM on the primordial thread. |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
639 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
640 |
// The following historical comment describes the details about running |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
641 |
// on a thread stack allocated with mmap(MAP_GROWSDOWN): |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
642 |
|
1 | 643 |
|
644 |
// Force Linux kernel to expand current thread stack. If "bottom" is close |
|
645 |
// to the stack guard, caller should block all signals. |
|
646 |
// |
|
647 |
// MAP_GROWSDOWN: |
|
648 |
// A special mmap() flag that is used to implement thread stacks. It tells |
|
649 |
// kernel that the memory region should extend downwards when needed. This |
|
650 |
// allows early versions of LinuxThreads to only mmap the first few pages |
|
651 |
// when creating a new thread. Linux kernel will automatically expand thread |
|
652 |
// stack as needed (on page faults). |
|
653 |
// |
|
654 |
// However, because the memory region of a MAP_GROWSDOWN stack can grow on |
|
655 |
// demand, if a page fault happens outside an already mapped MAP_GROWSDOWN |
|
656 |
// region, it's hard to tell if the fault is due to a legitimate stack |
|
657 |
// access or because of reading/writing non-exist memory (e.g. buffer |
|
658 |
// overrun). As a rule, if the fault happens below current stack pointer, |
|
659 |
// Linux kernel does not expand stack, instead a SIGSEGV is sent to the |
|
660 |
// application (see Linux kernel fault.c). |
|
661 |
// |
|
662 |
// This Linux feature can cause SIGSEGV when VM bangs thread stack for |
|
663 |
// stack overflow detection. |
|
664 |
// |
|
665 |
// Newer version of LinuxThreads (since glibc-2.2, or, RH-7.x) and NPTL do |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
666 |
// not use MAP_GROWSDOWN. |
1 | 667 |
// |
668 |
// To get around the problem and allow stack banging on Linux, we need to |
|
669 |
// manually expand thread stack after receiving the SIGSEGV. |
|
670 |
// |
|
671 |
// There are two ways to expand thread stack to address "bottom", we used |
|
672 |
// both of them in JVM before 1.5: |
|
673 |
// 1. adjust stack pointer first so that it is below "bottom", and then |
|
674 |
// touch "bottom" |
|
675 |
// 2. mmap() the page in question |
|
676 |
// |
|
677 |
// Now alternate signal stack is gone, it's harder to use 2. For instance, |
|
678 |
// if current sp is already near the lower end of page 101, and we need to |
|
679 |
// call mmap() to map page 100, it is possible that part of the mmap() frame |
|
680 |
// will be placed in page 100. When page 100 is mapped, it is zero-filled. |
|
681 |
// That will destroy the mmap() frame and cause VM to crash. |
|
682 |
// |
|
683 |
// The following code works by adjusting sp first, then accessing the "bottom" |
|
684 |
// page to force a page fault. Linux kernel will then automatically expand the |
|
685 |
// stack mapping. |
|
686 |
// |
|
687 |
// _expand_stack_to() assumes its frame size is less than page size, which |
|
688 |
// should always be true if the function is not inlined. |
|
689 |
||
37092
0e56e3c9d545
8151593: Cleanup definition/usage of INLINE/NOINLINE macros and add xlC support
simonis
parents:
36379
diff
changeset
|
690 |
static void NOINLINE _expand_stack_to(address bottom) { |
1 | 691 |
address sp; |
692 |
size_t size; |
|
693 |
volatile char *p; |
|
694 |
||
695 |
// Adjust bottom to point to the largest address within the same page, it |
|
696 |
// gives us a one-page buffer if alloca() allocates slightly more memory. |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
697 |
bottom = (address)align_down((uintptr_t)bottom, os::Linux::page_size()); |
1 | 698 |
bottom += os::Linux::page_size() - 1; |
699 |
||
700 |
// sp might be slightly above current stack pointer; if that's the case, we |
|
701 |
// will alloca() a little more space than necessary, which is OK. Don't use |
|
702 |
// os::current_stack_pointer(), as its result can be slightly below current |
|
703 |
// stack pointer, causing us to not alloca enough to reach "bottom". |
|
704 |
sp = (address)&sp; |
|
705 |
||
706 |
if (sp > bottom) { |
|
707 |
size = sp - bottom; |
|
708 |
p = (volatile char *)alloca(size); |
|
709 |
assert(p != NULL && p <= (volatile char *)bottom, "alloca problem?"); |
|
710 |
p[0] = '\0'; |
|
711 |
} |
|
712 |
} |
|
713 |
||
49407
7fa5375fa6fd
8197429: Increased stack guard causes segfaults on x86-32
aph
parents:
49349
diff
changeset
|
714 |
void os::Linux::expand_stack_to(address bottom) { |
7fa5375fa6fd
8197429: Increased stack guard causes segfaults on x86-32
aph
parents:
49349
diff
changeset
|
715 |
_expand_stack_to(bottom); |
7fa5375fa6fd
8197429: Increased stack guard causes segfaults on x86-32
aph
parents:
49349
diff
changeset
|
716 |
} |
7fa5375fa6fd
8197429: Increased stack guard causes segfaults on x86-32
aph
parents:
49349
diff
changeset
|
717 |
|
1 | 718 |
bool os::Linux::manually_expand_stack(JavaThread * t, address addr) { |
719 |
assert(t!=NULL, "just checking"); |
|
720 |
assert(t->osthread()->expanding_stack(), "expand should be set"); |
|
721 |
assert(t->stack_base() != NULL, "stack_base was not initialized"); |
|
722 |
||
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
723 |
if (addr < t->stack_base() && addr >= t->stack_reserved_zone_base()) { |
1 | 724 |
sigset_t mask_all, old_sigset; |
725 |
sigfillset(&mask_all); |
|
726 |
pthread_sigmask(SIG_SETMASK, &mask_all, &old_sigset); |
|
727 |
_expand_stack_to(addr); |
|
728 |
pthread_sigmask(SIG_SETMASK, &old_sigset, NULL); |
|
729 |
return true; |
|
730 |
} |
|
731 |
return false; |
|
732 |
} |
|
733 |
||
734 |
////////////////////////////////////////////////////////////////////////////// |
|
735 |
// create new thread |
|
736 |
||
737 |
// Thread start routine for all newly created threads |
|
38290
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
738 |
static void *thread_native_entry(Thread *thread) { |
52302
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
739 |
|
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
740 |
thread->record_stack_base_and_size(); |
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
741 |
|
1 | 742 |
// Try to randomize the cache line index of hot stack frames. |
743 |
// This helps when threads of the same stack traces evict each other's |
|
744 |
// cache lines. The threads can be either from the same JVM instance, or |
|
745 |
// from different JVM instances. The benefit is especially true for |
|
746 |
// processors with hyperthreading technology. |
|
747 |
static int counter = 0; |
|
748 |
int pid = os::current_process_id(); |
|
749 |
alloca(((pid ^ counter++) & 7) * 128); |
|
750 |
||
34633
2a6c7c7b30a7
8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables
dholmes
parents:
34621
diff
changeset
|
751 |
thread->initialize_thread_current(); |
1 | 752 |
|
753 |
OSThread* osthread = thread->osthread(); |
|
754 |
Monitor* sync = osthread->startThread_lock(); |
|
755 |
||
32070
8f5a14b884e2
6661889: thread id on Linux is inconsistent in error and log outputs
jmanson
parents:
31963
diff
changeset
|
756 |
osthread->set_thread_id(os::current_thread_id()); |
1 | 757 |
|
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
758 |
log_info(os, thread)("Thread is alive (tid: " UINTX_FORMAT ", pthread id: " UINTX_FORMAT ").", |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
759 |
os::current_thread_id(), (uintx) pthread_self()); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
760 |
|
1 | 761 |
if (UseNUMA) { |
762 |
int lgrp_id = os::numa_get_group_id(); |
|
763 |
if (lgrp_id != -1) { |
|
764 |
thread->set_lgrp_id(lgrp_id); |
|
765 |
} |
|
766 |
} |
|
767 |
// initialize signal mask for this thread |
|
768 |
os::Linux::hotspot_sigmask(thread); |
|
769 |
||
770 |
// initialize floating point control register |
|
771 |
os::Linux::init_thread_fpu_state(); |
|
772 |
||
773 |
// handshaking with parent thread |
|
774 |
{ |
|
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54485
diff
changeset
|
775 |
MutexLocker ml(sync, Mutex::_no_safepoint_check_flag); |
1 | 776 |
|
777 |
// notify parent thread |
|
778 |
osthread->set_state(INITIALIZED); |
|
779 |
sync->notify_all(); |
|
780 |
||
781 |
// wait until os::start_thread() |
|
782 |
while (osthread->get_state() == INITIALIZED) { |
|
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54485
diff
changeset
|
783 |
sync->wait_without_safepoint_check(); |
1 | 784 |
} |
785 |
} |
|
786 |
||
53103
67e3a8b3449c
8214097: Rework thread initialization and teardown logic
dholmes
parents:
53077
diff
changeset
|
787 |
assert(osthread->pthread_id() != 0, "pthread_id was not set as expected"); |
67e3a8b3449c
8214097: Rework thread initialization and teardown logic
dholmes
parents:
53077
diff
changeset
|
788 |
|
1 | 789 |
// call one more level start routine |
52302
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
790 |
thread->call_run(); |
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
791 |
|
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
792 |
// Note: at this point the thread object may already have deleted itself. |
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
793 |
// Prevent dereferencing it from here on out. |
912b79d983d9
8212173: Thread._stack_base/_stack_size initialized too late for new threads
stuefe
parents:
52109
diff
changeset
|
794 |
thread = NULL; |
1 | 795 |
|
36379
0c596dc28ed7
8150619: Improve thread based logging introduced with 8149036
stuefe
parents:
36355
diff
changeset
|
796 |
log_info(os, thread)("Thread finished (tid: " UINTX_FORMAT ", pthread id: " UINTX_FORMAT ").", |
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
797 |
os::current_thread_id(), (uintx) pthread_self()); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
798 |
|
1 | 799 |
return 0; |
800 |
} |
|
801 |
||
55624
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
802 |
// On Linux, glibc places static TLS blocks (for __thread variables) on |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
803 |
// the thread stack. This decreases the stack size actually available |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
804 |
// to threads. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
805 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
806 |
// For large static TLS sizes, this may cause threads to malfunction due |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
807 |
// to insufficient stack space. This is a well-known issue in glibc: |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
808 |
// http://sourceware.org/bugzilla/show_bug.cgi?id=11787. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
809 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
810 |
// As a workaround, we call a private but assumed-stable glibc function, |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
811 |
// __pthread_get_minstack() to obtain the minstack size and derive the |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
812 |
// static TLS size from it. We then increase the user requested stack |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
813 |
// size by this TLS size. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
814 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
815 |
// Due to compatibility concerns, this size adjustment is opt-in and |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
816 |
// controlled via AdjustStackSizeForTLS. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
817 |
typedef size_t (*GetMinStack)(const pthread_attr_t *attr); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
818 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
819 |
GetMinStack _get_minstack_func = NULL; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
820 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
821 |
static void get_minstack_init() { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
822 |
_get_minstack_func = |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
823 |
(GetMinStack)dlsym(RTLD_DEFAULT, "__pthread_get_minstack"); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
824 |
log_info(os, thread)("Lookup of __pthread_get_minstack %s", |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
825 |
_get_minstack_func == NULL ? "failed" : "succeeded"); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
826 |
} |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
827 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
828 |
// Returns the size of the static TLS area glibc puts on thread stacks. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
829 |
// The value is cached on first use, which occurs when the first thread |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
830 |
// is created during VM initialization. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
831 |
static size_t get_static_tls_area_size(const pthread_attr_t *attr) { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
832 |
size_t tls_size = 0; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
833 |
if (_get_minstack_func != NULL) { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
834 |
// Obtain the pthread minstack size by calling __pthread_get_minstack. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
835 |
size_t minstack_size = _get_minstack_func(attr); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
836 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
837 |
// Remove non-TLS area size included in minstack size returned |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
838 |
// by __pthread_get_minstack() to get the static TLS size. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
839 |
// In glibc before 2.27, minstack size includes guard_size. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
840 |
// In glibc 2.27 and later, guard_size is automatically added |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
841 |
// to the stack size by pthread_create and is no longer included |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
842 |
// in minstack size. In both cases, the guard_size is taken into |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
843 |
// account, so there is no need to adjust the result for that. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
844 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
845 |
// Although __pthread_get_minstack() is a private glibc function, |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
846 |
// it is expected to have a stable behavior across future glibc |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
847 |
// versions while glibc still allocates the static TLS blocks off |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
848 |
// the stack. Following is glibc 2.28 __pthread_get_minstack(): |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
849 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
850 |
// size_t |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
851 |
// __pthread_get_minstack (const pthread_attr_t *attr) |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
852 |
// { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
853 |
// return GLRO(dl_pagesize) + __static_tls_size + PTHREAD_STACK_MIN; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
854 |
// } |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
855 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
856 |
// |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
857 |
// The following 'minstack_size > os::vm_page_size() + PTHREAD_STACK_MIN' |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
858 |
// if check is done for precaution. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
859 |
if (minstack_size > (size_t)os::vm_page_size() + PTHREAD_STACK_MIN) { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
860 |
tls_size = minstack_size - os::vm_page_size() - PTHREAD_STACK_MIN; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
861 |
} |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
862 |
} |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
863 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
864 |
log_info(os, thread)("Stack size adjustment for TLS is " SIZE_FORMAT, |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
865 |
tls_size); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
866 |
return tls_size; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
867 |
} |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
868 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
869 |
bool os::create_thread(Thread* thread, ThreadType thr_type, |
41070
496463b4e206
8140520: segfault on solaris-amd64 with "-XX:VMThreadStackSize=1" option
rdurbin
parents:
40929
diff
changeset
|
870 |
size_t req_stack_size) { |
1 | 871 |
assert(thread->osthread() == NULL, "caller responsible"); |
872 |
||
873 |
// Allocate the OSThread object |
|
874 |
OSThread* osthread = new OSThread(NULL, NULL); |
|
875 |
if (osthread == NULL) { |
|
876 |
return false; |
|
877 |
} |
|
878 |
||
879 |
// set the correct thread state |
|
880 |
osthread->set_thread_type(thr_type); |
|
881 |
||
882 |
// Initial state is ALLOCATED but not INITIALIZED |
|
883 |
osthread->set_state(ALLOCATED); |
|
884 |
||
885 |
thread->set_osthread(osthread); |
|
886 |
||
887 |
// init thread attributes |
|
888 |
pthread_attr_t attr; |
|
889 |
pthread_attr_init(&attr); |
|
890 |
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); |
|
891 |
||
42905 | 892 |
// Calculate stack size if it's not specified by caller. |
41070
496463b4e206
8140520: segfault on solaris-amd64 with "-XX:VMThreadStackSize=1" option
rdurbin
parents:
40929
diff
changeset
|
893 |
size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size); |
55624
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
894 |
// In glibc versions prior to 2.7 the guard size mechanism |
42905 | 895 |
// is not implemented properly. The posix standard requires adding |
896 |
// the size of the guard pages to the stack size, instead Linux |
|
897 |
// takes the space out of 'stacksize'. Thus we adapt the requested |
|
898 |
// stack_size by the size of the guard pages to mimick proper |
|
46346
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
899 |
// behaviour. However, be careful not to end up with a size |
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
900 |
// of zero due to overflow. Don't add the guard page in that case. |
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
901 |
size_t guard_size = os::Linux::default_guard_size(thr_type); |
55624
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
902 |
// Configure glibc guard page. Must happen before calling |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
903 |
// get_static_tls_area_size(), which uses the guard_size. |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
904 |
pthread_attr_setguardsize(&attr, guard_size); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
905 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
906 |
size_t stack_adjust_size = 0; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
907 |
if (AdjustStackSizeForTLS) { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
908 |
// Adjust the stack_size for on-stack TLS - see get_static_tls_area_size(). |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
909 |
stack_adjust_size += get_static_tls_area_size(&attr); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
910 |
} else { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
911 |
stack_adjust_size += guard_size; |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
912 |
} |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
913 |
|
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
914 |
stack_adjust_size = align_up(stack_adjust_size, os::vm_page_size()); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
915 |
if (stack_size <= SIZE_MAX - stack_adjust_size) { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
916 |
stack_size += stack_adjust_size; |
46346
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
917 |
} |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
918 |
assert(is_aligned(stack_size, os::vm_page_size()), "stack_size not aligned"); |
46346
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
919 |
|
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
920 |
int status = pthread_attr_setstacksize(&attr, stack_size); |
4085295dcf51
8176768: hotspot ignores PTHREAD_STACK_MIN when creating new threads
cjplummer
parents:
46331
diff
changeset
|
921 |
assert_status(status == 0, status, "pthread_attr_setstacksize"); |
1 | 922 |
|
923 |
ThreadState state; |
|
924 |
||
925 |
{ |
|
926 |
pthread_t tid; |
|
38290
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
927 |
int ret = pthread_create(&tid, &attr, (void* (*)(void*)) thread_native_entry, thread); |
1 | 928 |
|
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
929 |
char buf[64]; |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
930 |
if (ret == 0) { |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
931 |
log_info(os, thread)("Thread started (pthread id: " UINTX_FORMAT ", attributes: %s). ", |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
932 |
(uintx) tid, os::Posix::describe_pthread_attr(buf, sizeof(buf), &attr)); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
933 |
} else { |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
934 |
log_warning(os, thread)("Failed to start thread - pthread_create failed (%s) for attributes: %s.", |
37113 | 935 |
os::errno_name(ret), os::Posix::describe_pthread_attr(buf, sizeof(buf), &attr)); |
54280
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
936 |
// Log some OS information which might explain why creating the thread failed. |
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
937 |
log_info(os, thread)("Number of threads approx. running in the VM: %d", Threads::number_of_threads()); |
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
938 |
LogStream st(Log(os, thread)::info()); |
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
939 |
os::Posix::print_rlimit_info(&st); |
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
940 |
os::print_memory_info(&st); |
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
941 |
os::Linux::print_proc_sys_info(&st); |
a33c42262338
8220570: Additonal trace when native thread creation fails
rschmelter
parents:
54211
diff
changeset
|
942 |
os::Linux::print_container_info(&st); |
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
943 |
} |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
944 |
|
1 | 945 |
pthread_attr_destroy(&attr); |
946 |
||
947 |
if (ret != 0) { |
|
948 |
// Need to clean up stuff we've allocated so far |
|
949 |
thread->set_osthread(NULL); |
|
950 |
delete osthread; |
|
951 |
return false; |
|
952 |
} |
|
953 |
||
954 |
// Store pthread info into the OSThread |
|
955 |
osthread->set_pthread_id(tid); |
|
956 |
||
957 |
// Wait until child thread is either initialized or aborted |
|
958 |
{ |
|
959 |
Monitor* sync_with_child = osthread->startThread_lock(); |
|
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54485
diff
changeset
|
960 |
MutexLocker ml(sync_with_child, Mutex::_no_safepoint_check_flag); |
1 | 961 |
while ((state = osthread->get_state()) == ALLOCATED) { |
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54485
diff
changeset
|
962 |
sync_with_child->wait_without_safepoint_check(); |
1 | 963 |
} |
964 |
} |
|
965 |
} |
|
966 |
||
967 |
// Aborted due to thread limit being reached |
|
968 |
if (state == ZOMBIE) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
969 |
thread->set_osthread(NULL); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
970 |
delete osthread; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
971 |
return false; |
1 | 972 |
} |
973 |
||
974 |
// The thread is returned suspended (in state INITIALIZED), |
|
975 |
// and is started higher up in the call chain |
|
976 |
assert(state == INITIALIZED, "race condition"); |
|
977 |
return true; |
|
978 |
} |
|
979 |
||
980 |
///////////////////////////////////////////////////////////////////////////// |
|
981 |
// attach existing thread |
|
982 |
||
983 |
// bootstrap the main thread |
|
984 |
bool os::create_main_thread(JavaThread* thread) { |
|
985 |
assert(os::Linux::_main_thread == pthread_self(), "should be called inside main thread"); |
|
986 |
return create_attached_thread(thread); |
|
987 |
} |
|
988 |
||
989 |
bool os::create_attached_thread(JavaThread* thread) { |
|
990 |
#ifdef ASSERT |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
991 |
thread->verify_not_published(); |
1 | 992 |
#endif |
993 |
||
994 |
// Allocate the OSThread object |
|
995 |
OSThread* osthread = new OSThread(NULL, NULL); |
|
996 |
||
997 |
if (osthread == NULL) { |
|
998 |
return false; |
|
999 |
} |
|
1000 |
||
1001 |
// Store pthread info into the OSThread |
|
1002 |
osthread->set_thread_id(os::Linux::gettid()); |
|
1003 |
osthread->set_pthread_id(::pthread_self()); |
|
1004 |
||
1005 |
// initialize floating point control register |
|
1006 |
os::Linux::init_thread_fpu_state(); |
|
1007 |
||
1008 |
// Initial thread state is RUNNABLE |
|
1009 |
osthread->set_state(RUNNABLE); |
|
1010 |
||
1011 |
thread->set_osthread(osthread); |
|
1012 |
||
1013 |
if (UseNUMA) { |
|
1014 |
int lgrp_id = os::numa_get_group_id(); |
|
1015 |
if (lgrp_id != -1) { |
|
1016 |
thread->set_lgrp_id(lgrp_id); |
|
1017 |
} |
|
1018 |
} |
|
1019 |
||
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1020 |
if (os::is_primordial_thread()) { |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1021 |
// If current thread is primordial thread, its stack is mapped on demand, |
1 | 1022 |
// see notes about MAP_GROWSDOWN. Here we try to force kernel to map |
1023 |
// the entire stack region to avoid SEGV in stack banging. |
|
1024 |
// It is also useful to get around the heap-stack-gap problem on SuSE |
|
1025 |
// kernel (see 4821821 for details). We first expand stack to the top |
|
1026 |
// of yellow zone, then enable stack yellow zone (order is significant, |
|
1027 |
// enabling yellow zone first will crash JVM on SuSE Linux), so there |
|
1028 |
// is no gap between the last two virtual memory regions. |
|
1029 |
||
1030 |
JavaThread *jt = (JavaThread *)thread; |
|
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
1031 |
address addr = jt->stack_reserved_zone_base(); |
1 | 1032 |
assert(addr != NULL, "initialization problem?"); |
1033 |
assert(jt->stack_available(addr) > 0, "stack guard should not be enabled"); |
|
1034 |
||
1035 |
osthread->set_expanding_stack(); |
|
1036 |
os::Linux::manually_expand_stack(jt, addr); |
|
1037 |
osthread->clear_expanding_stack(); |
|
1038 |
} |
|
1039 |
||
1040 |
// initialize signal mask for this thread |
|
1041 |
// and save the caller's signal mask |
|
1042 |
os::Linux::hotspot_sigmask(thread); |
|
1043 |
||
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
1044 |
log_info(os, thread)("Thread attached (tid: " UINTX_FORMAT ", pthread id: " UINTX_FORMAT ").", |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
1045 |
os::current_thread_id(), (uintx) pthread_self()); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
1046 |
|
1 | 1047 |
return true; |
1048 |
} |
|
1049 |
||
1050 |
void os::pd_start_thread(Thread* thread) { |
|
1051 |
OSThread * osthread = thread->osthread(); |
|
1052 |
assert(osthread->get_state() != INITIALIZED, "just checking"); |
|
1053 |
Monitor* sync_with_child = osthread->startThread_lock(); |
|
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54485
diff
changeset
|
1054 |
MutexLocker ml(sync_with_child, Mutex::_no_safepoint_check_flag); |
1 | 1055 |
sync_with_child->notify(); |
1056 |
} |
|
1057 |
||
1058 |
// Free Linux resources related to the OSThread |
|
1059 |
void os::free_thread(OSThread* osthread) { |
|
1060 |
assert(osthread != NULL, "osthread not set"); |
|
1061 |
||
38290
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1062 |
// We are told to free resources of the argument thread, |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1063 |
// but we can only really operate on the current thread. |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1064 |
assert(Thread::current()->osthread() == osthread, |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1065 |
"os::free_thread but not current thread"); |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1066 |
|
37097
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
1067 |
#ifdef ASSERT |
38290
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1068 |
sigset_t current; |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1069 |
sigemptyset(¤t); |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1070 |
pthread_sigmask(SIG_SETMASK, NULL, ¤t); |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1071 |
assert(!sigismember(¤t, SR_signum), "SR signal should not be blocked!"); |
37097
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
1072 |
#endif |
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
1073 |
|
38290
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1074 |
// Restore caller's signal mask |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1075 |
sigset_t sigmask = osthread->caller_sigmask(); |
6b194cfc1557
8154715: Missing destructor and/or TLS clearing calls for terminating threads
dholmes
parents:
38071
diff
changeset
|
1076 |
pthread_sigmask(SIG_SETMASK, &sigmask, NULL); |
1 | 1077 |
|
1078 |
delete osthread; |
|
1079 |
} |
|
1080 |
||
1081 |
////////////////////////////////////////////////////////////////////////////// |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1082 |
// primordial thread |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1083 |
|
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1084 |
// Check if current thread is the primordial thread, similar to Solaris thr_main. |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1085 |
bool os::is_primordial_thread(void) { |
49660
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
1086 |
if (suppress_primordial_thread_resolution) { |
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
1087 |
return false; |
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
1088 |
} |
1 | 1089 |
char dummy; |
1090 |
// If called before init complete, thread stack bottom will be null. |
|
1091 |
// Can be called if fatal error occurs before initialization. |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1092 |
if (os::Linux::initial_thread_stack_bottom() == NULL) return false; |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1093 |
assert(os::Linux::initial_thread_stack_bottom() != NULL && |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1094 |
os::Linux::initial_thread_stack_size() != 0, |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1095 |
"os::init did not locate primordial thread's stack region"); |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1096 |
if ((address)&dummy >= os::Linux::initial_thread_stack_bottom() && |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1097 |
(address)&dummy < os::Linux::initial_thread_stack_bottom() + |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1098 |
os::Linux::initial_thread_stack_size()) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1099 |
return true; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1100 |
} else { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1101 |
return false; |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1102 |
} |
1 | 1103 |
} |
1104 |
||
1105 |
// Find the virtual memory area that contains addr |
|
1106 |
static bool find_vma(address addr, address* vma_low, address* vma_high) { |
|
1107 |
FILE *fp = fopen("/proc/self/maps", "r"); |
|
1108 |
if (fp) { |
|
1109 |
address low, high; |
|
1110 |
while (!feof(fp)) { |
|
1111 |
if (fscanf(fp, "%p-%p", &low, &high) == 2) { |
|
1112 |
if (low <= addr && addr < high) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1113 |
if (vma_low) *vma_low = low; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1114 |
if (vma_high) *vma_high = high; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1115 |
fclose(fp); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1116 |
return true; |
1 | 1117 |
} |
1118 |
} |
|
1119 |
for (;;) { |
|
1120 |
int ch = fgetc(fp); |
|
1121 |
if (ch == EOF || ch == (int)'\n') break; |
|
1122 |
} |
|
1123 |
} |
|
1124 |
fclose(fp); |
|
1125 |
} |
|
1126 |
return false; |
|
1127 |
} |
|
1128 |
||
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1129 |
// Locate primordial thread stack. This special handling of primordial thread stack |
1 | 1130 |
// is needed because pthread_getattr_np() on most (all?) Linux distros returns |
42865 | 1131 |
// bogus value for the primordial process thread. While the launcher has created |
1132 |
// the VM in a new thread since JDK 6, we still have to allow for the use of the |
|
1133 |
// JNI invocation API from a primordial thread. |
|
1 | 1134 |
void os::Linux::capture_initial_stack(size_t max_size) { |
42865 | 1135 |
|
1136 |
// max_size is either 0 (which means accept OS default for thread stacks) or |
|
1137 |
// a user-specified value known to be at least the minimum needed. If we |
|
1138 |
// are actually on the primordial thread we can make it appear that we have a |
|
1139 |
// smaller max_size stack by inserting the guard pages at that location. But we |
|
1140 |
// cannot do anything to emulate a larger stack than what has been provided by |
|
1141 |
// the OS or threading library. In fact if we try to use a stack greater than |
|
1142 |
// what is set by rlimit then we will crash the hosting process. |
|
1143 |
||
1144 |
// Maximum stack size is the easy part, get it from RLIMIT_STACK. |
|
1145 |
// If this is "unlimited" then it will be a huge value. |
|
1 | 1146 |
struct rlimit rlim; |
1147 |
getrlimit(RLIMIT_STACK, &rlim); |
|
41070
496463b4e206
8140520: segfault on solaris-amd64 with "-XX:VMThreadStackSize=1" option
rdurbin
parents:
40929
diff
changeset
|
1148 |
size_t stack_size = rlim.rlim_cur; |
1 | 1149 |
|
1150 |
// 6308388: a bug in ld.so will relocate its own .data section to the |
|
1151 |
// lower end of primordial stack; reduce ulimit -s value a little bit |
|
1152 |
// so we won't install guard page on ld.so's data section. |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1153 |
// But ensure we don't underflow the stack size - allow 1 page spare |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1154 |
if (stack_size >= (size_t)(3 * page_size())) { |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1155 |
stack_size -= 2 * page_size(); |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1156 |
} |
1 | 1157 |
|
1158 |
// Try to figure out where the stack base (top) is. This is harder. |
|
1159 |
// |
|
1160 |
// When an application is started, glibc saves the initial stack pointer in |
|
1161 |
// a global variable "__libc_stack_end", which is then used by system |
|
1162 |
// libraries. __libc_stack_end should be pretty close to stack top. The |
|
1163 |
// variable is available since the very early days. However, because it is |
|
1164 |
// a private interface, it could disappear in the future. |
|
1165 |
// |
|
1166 |
// Linux kernel saves start_stack information in /proc/<pid>/stat. Similar |
|
1167 |
// to __libc_stack_end, it is very close to stack top, but isn't the real |
|
1168 |
// stack top. Note that /proc may not exist if VM is running as a chroot |
|
1169 |
// program, so reading /proc/<pid>/stat could fail. Also the contents of |
|
1170 |
// /proc/<pid>/stat could change in the future (though unlikely). |
|
1171 |
// |
|
1172 |
// We try __libc_stack_end first. If that doesn't work, look for |
|
1173 |
// /proc/<pid>/stat. If neither of them works, we use current stack pointer |
|
1174 |
// as a hint, which should work well in most cases. |
|
1175 |
||
1176 |
uintptr_t stack_start; |
|
1177 |
||
1178 |
// try __libc_stack_end first |
|
1179 |
uintptr_t *p = (uintptr_t *)dlsym(RTLD_DEFAULT, "__libc_stack_end"); |
|
1180 |
if (p && *p) { |
|
1181 |
stack_start = *p; |
|
1182 |
} else { |
|
1183 |
// see if we can get the start_stack field from /proc/self/stat |
|
1184 |
FILE *fp; |
|
1185 |
int pid; |
|
1186 |
char state; |
|
1187 |
int ppid; |
|
1188 |
int pgrp; |
|
1189 |
int session; |
|
1190 |
int nr; |
|
1191 |
int tpgrp; |
|
1192 |
unsigned long flags; |
|
1193 |
unsigned long minflt; |
|
1194 |
unsigned long cminflt; |
|
1195 |
unsigned long majflt; |
|
1196 |
unsigned long cmajflt; |
|
1197 |
unsigned long utime; |
|
1198 |
unsigned long stime; |
|
1199 |
long cutime; |
|
1200 |
long cstime; |
|
1201 |
long prio; |
|
1202 |
long nice; |
|
1203 |
long junk; |
|
1204 |
long it_real; |
|
1205 |
uintptr_t start; |
|
1206 |
uintptr_t vsize; |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1207 |
intptr_t rss; |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1208 |
uintptr_t rsslim; |
1 | 1209 |
uintptr_t scodes; |
1210 |
uintptr_t ecode; |
|
1211 |
int i; |
|
1212 |
||
1213 |
// Figure what the primordial thread stack base is. Code is inspired |
|
1214 |
// by email from Hans Boehm. /proc/self/stat begins with current pid, |
|
1215 |
// followed by command name surrounded by parentheses, state, etc. |
|
1216 |
char stat[2048]; |
|
1217 |
int statlen; |
|
1218 |
||
1219 |
fp = fopen("/proc/self/stat", "r"); |
|
1220 |
if (fp) { |
|
1221 |
statlen = fread(stat, 1, 2047, fp); |
|
1222 |
stat[statlen] = '\0'; |
|
1223 |
fclose(fp); |
|
1224 |
||
1225 |
// Skip pid and the command string. Note that we could be dealing with |
|
1226 |
// weird command names, e.g. user could decide to rename java launcher |
|
1227 |
// to "java 1.4.2 :)", then the stat file would look like |
|
1228 |
// 1234 (java 1.4.2 :)) R ... ... |
|
1229 |
// We don't really need to know the command string, just find the last |
|
1230 |
// occurrence of ")" and then start parsing from there. See bug 4726580. |
|
1231 |
char * s = strrchr(stat, ')'); |
|
1232 |
||
1233 |
i = 0; |
|
1234 |
if (s) { |
|
1235 |
// Skip blank chars |
|
27471 | 1236 |
do { s++; } while (s && isspace(*s)); |
1 | 1237 |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1238 |
#define _UFM UINTX_FORMAT |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1239 |
#define _DFM INTX_FORMAT |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1240 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1241 |
// 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1242 |
// 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1243 |
i = sscanf(s, "%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld " _UFM _UFM _DFM _UFM _UFM _UFM _UFM, |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1244 |
&state, // 3 %c |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1245 |
&ppid, // 4 %d |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1246 |
&pgrp, // 5 %d |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1247 |
&session, // 6 %d |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1248 |
&nr, // 7 %d |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1249 |
&tpgrp, // 8 %d |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1250 |
&flags, // 9 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1251 |
&minflt, // 10 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1252 |
&cminflt, // 11 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1253 |
&majflt, // 12 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1254 |
&cmajflt, // 13 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1255 |
&utime, // 14 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1256 |
&stime, // 15 %lu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1257 |
&cutime, // 16 %ld |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1258 |
&cstime, // 17 %ld |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1259 |
&prio, // 18 %ld |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1260 |
&nice, // 19 %ld |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1261 |
&junk, // 20 %ld |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1262 |
&it_real, // 21 %ld |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1263 |
&start, // 22 UINTX_FORMAT |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1264 |
&vsize, // 23 UINTX_FORMAT |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1265 |
&rss, // 24 INTX_FORMAT |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1266 |
&rsslim, // 25 UINTX_FORMAT |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1267 |
&scodes, // 26 UINTX_FORMAT |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1268 |
&ecode, // 27 UINTX_FORMAT |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1269 |
&stack_start); // 28 UINTX_FORMAT |
1 | 1270 |
} |
1271 |
||
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1272 |
#undef _UFM |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1273 |
#undef _DFM |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1274 |
|
1 | 1275 |
if (i != 28 - 2) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1276 |
assert(false, "Bad conversion from /proc/self/stat"); |
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1277 |
// product mode - assume we are the primordial thread, good luck in the |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1278 |
// embedded case. |
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1279 |
warning("Can't detect primordial thread stack location - bad conversion"); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1280 |
stack_start = (uintptr_t) &rlim; |
1 | 1281 |
} |
1282 |
} else { |
|
1283 |
// For some reason we can't open /proc/self/stat (for example, running on |
|
1284 |
// FreeBSD with a Linux emulator, or inside chroot), this should work for |
|
1285 |
// most cases, so don't abort: |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1286 |
warning("Can't detect primordial thread stack location - no /proc/self/stat"); |
1 | 1287 |
stack_start = (uintptr_t) &rlim; |
1288 |
} |
|
1289 |
} |
|
1290 |
||
1291 |
// Now we have a pointer (stack_start) very close to the stack top, the |
|
1292 |
// next thing to do is to figure out the exact location of stack top. We |
|
1293 |
// can find out the virtual memory area that contains stack_start by |
|
1294 |
// reading /proc/self/maps, it should be the last vma in /proc/self/maps, |
|
1295 |
// and its upper limit is the real stack top. (again, this would fail if |
|
1296 |
// running inside chroot, because /proc may not exist.) |
|
1297 |
||
1298 |
uintptr_t stack_top; |
|
1299 |
address low, high; |
|
1300 |
if (find_vma((address)stack_start, &low, &high)) { |
|
1301 |
// success, "high" is the true stack top. (ignore "low", because initial |
|
1302 |
// thread stack grows on demand, its real bottom is high - RLIMIT_STACK.) |
|
1303 |
stack_top = (uintptr_t)high; |
|
1304 |
} else { |
|
1305 |
// failed, likely because /proc/self/maps does not exist |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
1306 |
warning("Can't detect primordial thread stack location - find_vma failed"); |
1 | 1307 |
// best effort: stack_start is normally within a few pages below the real |
1308 |
// stack top, use it as stack top, and reduce stack size so we won't put |
|
1309 |
// guard page outside stack. |
|
1310 |
stack_top = stack_start; |
|
1311 |
stack_size -= 16 * page_size(); |
|
1312 |
} |
|
1313 |
||
1314 |
// stack_top could be partially down the page so align it |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
1315 |
stack_top = align_up(stack_top, page_size()); |
1 | 1316 |
|
42865 | 1317 |
// Allowed stack value is minimum of max_size and what we derived from rlimit |
1318 |
if (max_size > 0) { |
|
1319 |
_initial_thread_stack_size = MIN2(max_size, stack_size); |
|
1 | 1320 |
} else { |
42865 | 1321 |
// Accept the rlimit max, but if stack is unlimited then it will be huge, so |
1322 |
// clamp it at 8MB as we do on Solaris |
|
1323 |
_initial_thread_stack_size = MIN2(stack_size, 8*M); |
|
1324 |
} |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
1325 |
_initial_thread_stack_size = align_down(_initial_thread_stack_size, page_size()); |
1 | 1326 |
_initial_thread_stack_bottom = (address)stack_top - _initial_thread_stack_size; |
42865 | 1327 |
|
1328 |
assert(_initial_thread_stack_bottom < (address)stack_top, "overflow!"); |
|
1329 |
||
1330 |
if (log_is_enabled(Info, os, thread)) { |
|
1331 |
// See if we seem to be on primordial process thread |
|
1332 |
bool primordial = uintptr_t(&rlim) > uintptr_t(_initial_thread_stack_bottom) && |
|
1333 |
uintptr_t(&rlim) < stack_top; |
|
1334 |
||
1335 |
log_info(os, thread)("Capturing initial stack in %s thread: req. size: " SIZE_FORMAT "K, actual size: " |
|
1336 |
SIZE_FORMAT "K, top=" INTPTR_FORMAT ", bottom=" INTPTR_FORMAT, |
|
1337 |
primordial ? "primordial" : "user", max_size / K, _initial_thread_stack_size / K, |
|
1338 |
stack_top, intptr_t(_initial_thread_stack_bottom)); |
|
1339 |
} |
|
1 | 1340 |
} |
1341 |
||
1342 |
//////////////////////////////////////////////////////////////////////////////// |
|
1343 |
// time support |
|
1344 |
||
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1345 |
#ifndef SUPPORTS_CLOCK_MONOTONIC |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1346 |
#error "Build platform doesn't support clock_gettime and related functionality" |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1347 |
#endif |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1348 |
|
1 | 1349 |
// Time since start-up in seconds to a fine granularity. |
1350 |
// Used by VMSelfDestructTimer and the MemProfiler. |
|
1351 |
double os::elapsedTime() { |
|
1352 |
||
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
1353 |
return ((double)os::elapsed_counter()) / os::elapsed_frequency(); // nanosecond resolution |
1 | 1354 |
} |
1355 |
||
1356 |
jlong os::elapsed_counter() { |
|
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
1357 |
return javaTimeNanos() - initial_time_count; |
1 | 1358 |
} |
1359 |
||
1360 |
jlong os::elapsed_frequency() { |
|
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
1361 |
return NANOSECS_PER_SEC; // nanosecond resolution |
1 | 1362 |
} |
1363 |
||
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1364 |
bool os::supports_vtime() { return true; } |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1365 |
|
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1366 |
double os::elapsedVTime() { |
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1367 |
struct rusage usage; |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1368 |
int retval = getrusage(RUSAGE_THREAD, &usage); |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1369 |
if (retval == 0) { |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1370 |
return (double) (usage.ru_utime.tv_sec + usage.ru_stime.tv_sec) + (double) (usage.ru_utime.tv_usec + usage.ru_stime.tv_usec) / (1000 * 1000); |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1371 |
} else { |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1372 |
// better than nothing, but not much |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1373 |
return elapsedTime(); |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1374 |
} |
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1375 |
} |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1376 |
|
234 | 1377 |
jlong os::javaTimeMillis() { |
1 | 1378 |
timeval time; |
1379 |
int status = gettimeofday(&time, NULL); |
|
1380 |
assert(status != -1, "linux error"); |
|
1381 |
return jlong(time.tv_sec) * 1000 + jlong(time.tv_usec / 1000); |
|
1382 |
} |
|
1383 |
||
28737
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1384 |
void os::javaTimeSystemUTC(jlong &seconds, jlong &nanos) { |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1385 |
timeval time; |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1386 |
int status = gettimeofday(&time, NULL); |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1387 |
assert(status != -1, "linux error"); |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1388 |
seconds = jlong(time.tv_sec); |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1389 |
nanos = jlong(time.tv_usec) * 1000; |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1390 |
} |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1391 |
|
1 | 1392 |
void os::Linux::fast_thread_clock_init() { |
1393 |
if (!UseLinuxPosixThreadCPUClocks) { |
|
1394 |
return; |
|
1395 |
} |
|
1396 |
clockid_t clockid; |
|
1397 |
struct timespec tp; |
|
1398 |
int (*pthread_getcpuclockid_func)(pthread_t, clockid_t *) = |
|
1399 |
(int(*)(pthread_t, clockid_t *)) dlsym(RTLD_DEFAULT, "pthread_getcpuclockid"); |
|
1400 |
||
1401 |
// Switch to using fast clocks for thread cpu time if |
|
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1402 |
// the clock_getres() returns 0 error code. |
1 | 1403 |
// Note, that some kernels may support the current thread |
1404 |
// clock (CLOCK_THREAD_CPUTIME_ID) but not the clocks |
|
1405 |
// returned by the pthread_getcpuclockid(). |
|
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1406 |
// If the fast Posix clocks are supported then the clock_getres() |
1 | 1407 |
// must return at least tp.tv_sec == 0 which means a resolution |
1408 |
// better than 1 sec. This is extra check for reliability. |
|
1409 |
||
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
1410 |
if (pthread_getcpuclockid_func && |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1411 |
pthread_getcpuclockid_func(_main_thread, &clockid) == 0 && |
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1412 |
os::Posix::clock_getres(clockid, &tp) == 0 && tp.tv_sec == 0) { |
1 | 1413 |
_supports_fast_thread_cpu_time = true; |
1414 |
_pthread_getcpuclockid = pthread_getcpuclockid_func; |
|
1415 |
} |
|
1416 |
} |
|
1417 |
||
1418 |
jlong os::javaTimeNanos() { |
|
22891
1f5d1fff23fa
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
fparain
parents:
22749
diff
changeset
|
1419 |
if (os::supports_monotonic_clock()) { |
1 | 1420 |
struct timespec tp; |
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
1421 |
int status = os::Posix::clock_gettime(CLOCK_MONOTONIC, &tp); |
1 | 1422 |
assert(status == 0, "gettime error"); |
1423 |
jlong result = jlong(tp.tv_sec) * (1000 * 1000 * 1000) + jlong(tp.tv_nsec); |
|
1424 |
return result; |
|
1425 |
} else { |
|
1426 |
timeval time; |
|
1427 |
int status = gettimeofday(&time, NULL); |
|
1428 |
assert(status != -1, "linux error"); |
|
1429 |
jlong usecs = jlong(time.tv_sec) * (1000 * 1000) + jlong(time.tv_usec); |
|
1430 |
return 1000 * usecs; |
|
1431 |
} |
|
1432 |
} |
|
1433 |
||
1434 |
void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { |
|
22891
1f5d1fff23fa
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
fparain
parents:
22749
diff
changeset
|
1435 |
if (os::supports_monotonic_clock()) { |
1 | 1436 |
info_ptr->max_value = ALL_64_BITS; |
1437 |
||
1438 |
// CLOCK_MONOTONIC - amount of time since some arbitrary point in the past |
|
1439 |
info_ptr->may_skip_backward = false; // not subject to resetting or drifting |
|
1440 |
info_ptr->may_skip_forward = false; // not subject to resetting or drifting |
|
1441 |
} else { |
|
1442 |
// gettimeofday - based on time in seconds since the Epoch thus does not wrap |
|
1443 |
info_ptr->max_value = ALL_64_BITS; |
|
1444 |
||
1445 |
// gettimeofday is a real time clock so it skips |
|
1446 |
info_ptr->may_skip_backward = true; |
|
1447 |
info_ptr->may_skip_forward = true; |
|
1448 |
} |
|
1449 |
||
1450 |
info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time |
|
1451 |
} |
|
1452 |
||
1453 |
// Return the real, user, and system times in seconds from an |
|
1454 |
// arbitrary fixed point in the past. |
|
1455 |
bool os::getTimesSecs(double* process_real_time, |
|
1456 |
double* process_user_time, |
|
1457 |
double* process_system_time) { |
|
1458 |
struct tms ticks; |
|
1459 |
clock_t real_ticks = times(&ticks); |
|
1460 |
||
1461 |
if (real_ticks == (clock_t) (-1)) { |
|
1462 |
return false; |
|
1463 |
} else { |
|
1464 |
double ticks_per_second = (double) clock_tics_per_sec; |
|
1465 |
*process_user_time = ((double) ticks.tms_utime) / ticks_per_second; |
|
1466 |
*process_system_time = ((double) ticks.tms_stime) / ticks_per_second; |
|
1467 |
*process_real_time = ((double) real_ticks) / ticks_per_second; |
|
1468 |
||
1469 |
return true; |
|
1470 |
} |
|
1471 |
} |
|
1472 |
||
1473 |
||
1474 |
char * os::local_time_string(char *buf, size_t buflen) { |
|
1475 |
struct tm t; |
|
1476 |
time_t long_time; |
|
1477 |
time(&long_time); |
|
1478 |
localtime_r(&long_time, &t); |
|
1479 |
jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", |
|
1480 |
t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, |
|
1481 |
t.tm_hour, t.tm_min, t.tm_sec); |
|
1482 |
return buf; |
|
1483 |
} |
|
1484 |
||
2012
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1485 |
struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1486 |
return localtime_r(clock, res); |
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1487 |
} |
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1488 |
|
1 | 1489 |
//////////////////////////////////////////////////////////////////////////////// |
1490 |
// runtime exit support |
|
1491 |
||
1492 |
// Note: os::shutdown() might be called very early during initialization, or |
|
1493 |
// called from signal handler. Before adding something to os::shutdown(), make |
|
1494 |
// sure it is async-safe and can handle partially initialized VM. |
|
1495 |
void os::shutdown() { |
|
1496 |
||
1497 |
// allow PerfMemory to attempt cleanup of any persistent resources |
|
1498 |
perfMemory_exit(); |
|
1499 |
||
1500 |
// needs to remove object in file system |
|
1501 |
AttachListener::abort(); |
|
1502 |
||
1503 |
// flush buffered output, finish log files |
|
1504 |
ostream_abort(); |
|
1505 |
||
1506 |
// Check for abort hook |
|
1507 |
abort_hook_t abort_hook = Arguments::abort_hook(); |
|
1508 |
if (abort_hook != NULL) { |
|
1509 |
abort_hook(); |
|
1510 |
} |
|
1511 |
||
1512 |
} |
|
1513 |
||
1514 |
// Note: os::abort() might be called very early during initialization, or |
|
1515 |
// called from signal handler. Before adding something to os::abort(), make |
|
1516 |
// sure it is async-safe and can handle partially initialized VM. |
|
35077
8b86440d3bf1
8145114: const-correctness for ucontext_t* reading functions
stuefe
parents:
35075
diff
changeset
|
1517 |
void os::abort(bool dump_core, void* siginfo, const void* context) { |
1 | 1518 |
os::shutdown(); |
1519 |
if (dump_core) { |
|
53870
92263386a883
8219414: SA: jhsdb jsnap throws UnmappedAddressException with core generated by gcore
ysuenaga
parents:
53568
diff
changeset
|
1520 |
if (DumpPrivateMappingsInCore) { |
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
1521 |
ClassLoader::close_jrt_image(); |
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
1522 |
} |
1 | 1523 |
#ifndef PRODUCT |
1524 |
fdStream out(defaultStream::output_fd()); |
|
1525 |
out.print_raw("Current thread is "); |
|
1526 |
char buf[16]; |
|
1527 |
jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); |
|
1528 |
out.print_raw_cr(buf); |
|
1529 |
out.print_raw_cr("Dumping core ..."); |
|
1530 |
#endif |
|
1531 |
::abort(); // dump core |
|
1532 |
} |
|
1533 |
||
1534 |
::exit(1); |
|
1535 |
} |
|
1536 |
||
1537 |
// Die immediately, no exit hook, no abort hook, no cleanup. |
|
55238
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1538 |
// Dump a core file, if possible, for debugging. |
1 | 1539 |
void os::die() { |
55238
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1540 |
if (TestUnresponsiveErrorHandler && !CreateCoredumpOnCrash) { |
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1541 |
// For TimeoutInErrorHandlingTest.java, we just kill the VM |
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1542 |
// and don't take the time to generate a core file. |
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1543 |
os::signal_raise(SIGKILL); |
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1544 |
} else { |
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1545 |
::abort(); |
3bd979f09721
8224793: os::die() does not honor CreateCoredumpOnCrash option
dcubed
parents:
55044
diff
changeset
|
1546 |
} |
1 | 1547 |
} |
1548 |
||
32070
8f5a14b884e2
6661889: thread id on Linux is inconsistent in error and log outputs
jmanson
parents:
31963
diff
changeset
|
1549 |
// thread_id is kernel thread id (similar to Solaris LWP id) |
8f5a14b884e2
6661889: thread id on Linux is inconsistent in error and log outputs
jmanson
parents:
31963
diff
changeset
|
1550 |
intx os::current_thread_id() { return os::Linux::gettid(); } |
1 | 1551 |
int os::current_process_id() { |
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
1552 |
return ::getpid(); |
1 | 1553 |
} |
1554 |
||
1555 |
// DLL functions |
|
1556 |
||
1557 |
const char* os::dll_file_extension() { return ".so"; } |
|
1558 |
||
7901
ea3d83447861
7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
parents:
7458
diff
changeset
|
1559 |
// This must be hard coded because it's the system's temporary |
ea3d83447861
7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
parents:
7458
diff
changeset
|
1560 |
// directory not the java application's temp directory, ala java.io.tmpdir. |
ea3d83447861
7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
parents:
7458
diff
changeset
|
1561 |
const char* os::get_temp_directory() { return "/tmp"; } |
1 | 1562 |
|
2358 | 1563 |
static bool file_exists(const char* filename) { |
1564 |
struct stat statbuf; |
|
1565 |
if (filename == NULL || strlen(filename) == 0) { |
|
1566 |
return false; |
|
1567 |
} |
|
1568 |
return os::stat(filename, &statbuf) == 0; |
|
1569 |
} |
|
1570 |
||
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
1571 |
// check if addr is inside libjvm.so |
1 | 1572 |
bool os::address_is_in_vm(address addr) { |
1573 |
static address libjvm_base_addr; |
|
1574 |
Dl_info dlinfo; |
|
1575 |
||
1576 |
if (libjvm_base_addr == NULL) { |
|
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1577 |
if (dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo) != 0) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1578 |
libjvm_base_addr = (address)dlinfo.dli_fbase; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1579 |
} |
1 | 1580 |
assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); |
1581 |
} |
|
1582 |
||
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1583 |
if (dladdr((void *)addr, &dlinfo) != 0) { |
1 | 1584 |
if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; |
1585 |
} |
|
1586 |
||
1587 |
return false; |
|
1588 |
} |
|
1589 |
||
1590 |
bool os::dll_address_to_function_name(address addr, char *buf, |
|
31352
a6ab7217b5cc
8079473: allow demangling to be optional in dll_address_to_function_name
bdelsart
parents:
31026
diff
changeset
|
1591 |
int buflen, int *offset, |
a6ab7217b5cc
8079473: allow demangling to be optional in dll_address_to_function_name
bdelsart
parents:
31026
diff
changeset
|
1592 |
bool demangle) { |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1593 |
// buf is not optional, but offset is optional |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1594 |
assert(buf != NULL, "sanity check"); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1595 |
|
1 | 1596 |
Dl_info dlinfo; |
1597 |
||
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1598 |
if (dladdr((void*)addr, &dlinfo) != 0) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1599 |
// see if we have a matching symbol |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1600 |
if (dlinfo.dli_saddr != NULL && dlinfo.dli_sname != NULL) { |
31352
a6ab7217b5cc
8079473: allow demangling to be optional in dll_address_to_function_name
bdelsart
parents:
31026
diff
changeset
|
1601 |
if (!(demangle && Decoder::demangle(dlinfo.dli_sname, buf, buflen))) { |
7447
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1602 |
jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1603 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1604 |
if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1605 |
return true; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1606 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1607 |
// no matching symbol so try for just file info |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1608 |
if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1609 |
if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
31352
a6ab7217b5cc
8079473: allow demangling to be optional in dll_address_to_function_name
bdelsart
parents:
31026
diff
changeset
|
1610 |
buf, buflen, offset, dlinfo.dli_fname, demangle)) { |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1611 |
return true; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1612 |
} |
7447
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1613 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1614 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1615 |
|
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1616 |
buf[0] = '\0'; |
7447
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1617 |
if (offset != NULL) *offset = -1; |
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1618 |
return false; |
1 | 1619 |
} |
1620 |
||
1621 |
struct _address_to_library_name { |
|
1622 |
address addr; // input : memory address |
|
1623 |
size_t buflen; // size of fname |
|
1624 |
char* fname; // output: library name |
|
1625 |
address base; // library base addr |
|
1626 |
}; |
|
1627 |
||
1628 |
static int address_to_library_name_callback(struct dl_phdr_info *info, |
|
1629 |
size_t size, void *data) { |
|
1630 |
int i; |
|
1631 |
bool found = false; |
|
1632 |
address libbase = NULL; |
|
1633 |
struct _address_to_library_name * d = (struct _address_to_library_name *)data; |
|
1634 |
||
1635 |
// iterate through all loadable segments |
|
1636 |
for (i = 0; i < info->dlpi_phnum; i++) { |
|
1637 |
address segbase = (address)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr); |
|
1638 |
if (info->dlpi_phdr[i].p_type == PT_LOAD) { |
|
1639 |
// base address of a library is the lowest address of its loaded |
|
1640 |
// segments. |
|
1641 |
if (libbase == NULL || libbase > segbase) { |
|
1642 |
libbase = segbase; |
|
1643 |
} |
|
1644 |
// see if 'addr' is within current segment |
|
1645 |
if (segbase <= d->addr && |
|
1646 |
d->addr < segbase + info->dlpi_phdr[i].p_memsz) { |
|
1647 |
found = true; |
|
1648 |
} |
|
1649 |
} |
|
1650 |
} |
|
1651 |
||
1652 |
// dlpi_name is NULL or empty if the ELF file is executable, return 0 |
|
1653 |
// so dll_address_to_library_name() can fall through to use dladdr() which |
|
1654 |
// can figure out executable name from argv[0]. |
|
1655 |
if (found && info->dlpi_name && info->dlpi_name[0]) { |
|
1656 |
d->base = libbase; |
|
1657 |
if (d->fname) { |
|
1658 |
jio_snprintf(d->fname, d->buflen, "%s", info->dlpi_name); |
|
1659 |
} |
|
1660 |
return 1; |
|
1661 |
} |
|
1662 |
return 0; |
|
1663 |
} |
|
1664 |
||
1665 |
bool os::dll_address_to_library_name(address addr, char* buf, |
|
1666 |
int buflen, int* offset) { |
|
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1667 |
// buf is not optional, but offset is optional |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1668 |
assert(buf != NULL, "sanity check"); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1669 |
|
1 | 1670 |
Dl_info dlinfo; |
1671 |
struct _address_to_library_name data; |
|
1672 |
||
1673 |
// There is a bug in old glibc dladdr() implementation that it could resolve |
|
1674 |
// to wrong library name if the .so file has a base address != NULL. Here |
|
1675 |
// we iterate through the program headers of all loaded libraries to find |
|
1676 |
// out which library 'addr' really belongs to. This workaround can be |
|
1677 |
// removed once the minimum requirement for glibc is moved to 2.3.x. |
|
1678 |
data.addr = addr; |
|
1679 |
data.fname = buf; |
|
1680 |
data.buflen = buflen; |
|
1681 |
data.base = NULL; |
|
1682 |
int rslt = dl_iterate_phdr(address_to_library_name_callback, (void *)&data); |
|
1683 |
||
1684 |
if (rslt) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1685 |
// buf already contains library name |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1686 |
if (offset) *offset = addr - data.base; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1687 |
return true; |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1688 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1689 |
if (dladdr((void*)addr, &dlinfo) != 0) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1690 |
if (dlinfo.dli_fname != NULL) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1691 |
jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1692 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1693 |
if (dlinfo.dli_fbase != NULL && offset != NULL) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1694 |
*offset = addr - (address)dlinfo.dli_fbase; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1695 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1696 |
return true; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1697 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1698 |
|
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1699 |
buf[0] = '\0'; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1700 |
if (offset) *offset = -1; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1701 |
return false; |
1 | 1702 |
} |
1703 |
||
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1704 |
// Loads .dll/.so and |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1705 |
// in case of error it checks if .dll/.so was built for the |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1706 |
// same architecture as Hotspot is running on |
1 | 1707 |
|
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1708 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1709 |
// Remember the stack's state. The Linux dynamic linker will change |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1710 |
// the stack to 'executable' at most once, so we must safepoint only once. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1711 |
bool os::Linux::_stack_is_executable = false; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1712 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1713 |
// VM operation that loads a library. This is necessary if stack protection |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1714 |
// of the Java stacks can be lost during loading the library. If we |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1715 |
// do not stop the Java threads, they can stack overflow before the stacks |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1716 |
// are protected again. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1717 |
class VM_LinuxDllLoad: public VM_Operation { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1718 |
private: |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1719 |
const char *_filename; |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1720 |
char *_ebuf; |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1721 |
int _ebuflen; |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1722 |
void *_lib; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1723 |
public: |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1724 |
VM_LinuxDllLoad(const char *fn, char *ebuf, int ebuflen) : |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1725 |
_filename(fn), _ebuf(ebuf), _ebuflen(ebuflen), _lib(NULL) {} |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1726 |
VMOp_Type type() const { return VMOp_LinuxDllLoad; } |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1727 |
void doit() { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1728 |
_lib = os::Linux::dll_load_in_vmthread(_filename, _ebuf, _ebuflen); |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1729 |
os::Linux::_stack_is_executable = true; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1730 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1731 |
void* loaded_library() { return _lib; } |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1732 |
}; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1733 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1734 |
void * os::dll_load(const char *filename, char *ebuf, int ebuflen) { |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1735 |
void * result = NULL; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1736 |
bool load_attempted = false; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1737 |
|
57651
ddae2da329ed
8228902: add os::dll_load to the unified logging os category
mbaesken
parents:
57599
diff
changeset
|
1738 |
log_info(os)("attempting shared library load of %s", filename); |
ddae2da329ed
8228902: add os::dll_load to the unified logging os category
mbaesken
parents:
57599
diff
changeset
|
1739 |
|
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1740 |
// Check whether the library to load might change execution rights |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1741 |
// of the stack. If they are changed, the protection of the stack |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1742 |
// guard pages will be lost. We need a safepoint to fix this. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1743 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1744 |
// See Linux man page execstack(8) for more info. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1745 |
if (os::uses_stack_guard_pages() && !os::Linux::_stack_is_executable) { |
46629
8eeacdc76bf2
8183262: noexecstack check in os::dll_load on Linux is too expensive
kvn
parents:
46625
diff
changeset
|
1746 |
if (!ElfFile::specifies_noexecstack(filename)) { |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1747 |
if (!is_init_completed()) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1748 |
os::Linux::_stack_is_executable = true; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1749 |
// This is OK - No Java threads have been created yet, and hence no |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1750 |
// stack guard pages to fix. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1751 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1752 |
// Dynamic loader will make all stacks executable after |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1753 |
// this function returns, and will not do that again. |
49636 | 1754 |
assert(Threads::number_of_threads() == 0, "no Java threads should exist yet."); |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1755 |
} else { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1756 |
warning("You have loaded library %s which might have disabled stack guard. " |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1757 |
"The VM will try to fix the stack guard now.\n" |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1758 |
"It's highly recommended that you fix the library with " |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1759 |
"'execstack -c <libfile>', or link it with '-z noexecstack'.", |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1760 |
filename); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1761 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1762 |
assert(Thread::current()->is_Java_thread(), "must be Java thread"); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1763 |
JavaThread *jt = JavaThread::current(); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1764 |
if (jt->thread_state() != _thread_in_native) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1765 |
// This happens when a compiler thread tries to load a hsdis-<arch>.so file |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1766 |
// that requires ExecStack. Cannot enter safe point. Let's give up. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1767 |
warning("Unable to fix stack guard. Giving up."); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1768 |
} else { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1769 |
if (!LoadExecStackDllInVMThread) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1770 |
// This is for the case where the DLL has an static |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1771 |
// constructor function that executes JNI code. We cannot |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1772 |
// load such DLLs in the VMThread. |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1773 |
result = os::Linux::dlopen_helper(filename, ebuf, ebuflen); |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1774 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1775 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1776 |
ThreadInVMfromNative tiv(jt); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1777 |
debug_only(VMNativeEntryWrapper vew;) |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1778 |
|
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1779 |
VM_LinuxDllLoad op(filename, ebuf, ebuflen); |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1780 |
VMThread::execute(&op); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1781 |
if (LoadExecStackDllInVMThread) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1782 |
result = op.loaded_library(); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1783 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1784 |
load_attempted = true; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1785 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1786 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1787 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1788 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1789 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1790 |
if (!load_attempted) { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1791 |
result = os::Linux::dlopen_helper(filename, ebuf, ebuflen); |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1792 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1793 |
|
1 | 1794 |
if (result != NULL) { |
1795 |
// Successful loading |
|
1796 |
return result; |
|
1797 |
} |
|
1798 |
||
1799 |
Elf32_Ehdr elf_head; |
|
1800 |
int diag_msg_max_length=ebuflen-strlen(ebuf); |
|
1801 |
char* diag_msg_buf=ebuf+strlen(ebuf); |
|
1802 |
||
1803 |
if (diag_msg_max_length==0) { |
|
1804 |
// No more space in ebuf for additional diagnostics message |
|
1805 |
return NULL; |
|
1806 |
} |
|
1807 |
||
1808 |
||
1809 |
int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); |
|
1810 |
||
1811 |
if (file_descriptor < 0) { |
|
1812 |
// Can't open library, report dlerror() message |
|
1813 |
return NULL; |
|
1814 |
} |
|
1815 |
||
1816 |
bool failed_to_read_elf_head= |
|
1817 |
(sizeof(elf_head)!= |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1818 |
(::read(file_descriptor, &elf_head,sizeof(elf_head)))); |
1 | 1819 |
|
1820 |
::close(file_descriptor); |
|
1821 |
if (failed_to_read_elf_head) { |
|
1822 |
// file i/o error - report dlerror() msg |
|
1823 |
return NULL; |
|
1824 |
} |
|
1825 |
||
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1826 |
if (elf_head.e_ident[EI_DATA] != LITTLE_ENDIAN_ONLY(ELFDATA2LSB) BIG_ENDIAN_ONLY(ELFDATA2MSB)) { |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1827 |
// handle invalid/out of range endianness values |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1828 |
if (elf_head.e_ident[EI_DATA] == 0 || elf_head.e_ident[EI_DATA] > 2) { |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1829 |
return NULL; |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1830 |
} |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1831 |
|
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1832 |
#if defined(VM_LITTLE_ENDIAN) |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1833 |
// VM is LE, shared object BE |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1834 |
elf_head.e_machine = be16toh(elf_head.e_machine); |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1835 |
#else |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1836 |
// VM is BE, shared object LE |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1837 |
elf_head.e_machine = le16toh(elf_head.e_machine); |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1838 |
#endif |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1839 |
} |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1840 |
|
1 | 1841 |
typedef struct { |
39693
8b6e966563ce
8160353: narrowing conversion error is occurred with GCC 6
ysuenaga
parents:
39390
diff
changeset
|
1842 |
Elf32_Half code; // Actual value as defined in elf.h |
8b6e966563ce
8160353: narrowing conversion error is occurred with GCC 6
ysuenaga
parents:
39390
diff
changeset
|
1843 |
Elf32_Half compat_class; // Compatibility of archs at VM's sense |
8b6e966563ce
8160353: narrowing conversion error is occurred with GCC 6
ysuenaga
parents:
39390
diff
changeset
|
1844 |
unsigned char elf_class; // 32 or 64 bit |
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1845 |
unsigned char endianness; // MSB or LSB |
39693
8b6e966563ce
8160353: narrowing conversion error is occurred with GCC 6
ysuenaga
parents:
39390
diff
changeset
|
1846 |
char* name; // String representation |
1 | 1847 |
} arch_t; |
1848 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1849 |
#ifndef EM_486 |
1 | 1850 |
#define EM_486 6 /* Intel 80486 */ |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1851 |
#endif |
29180 | 1852 |
#ifndef EM_AARCH64 |
1853 |
#define EM_AARCH64 183 /* ARM AARCH64 */ |
|
1854 |
#endif |
|
1 | 1855 |
|
1856 |
static const arch_t arch_array[]={ |
|
1857 |
{EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, |
|
1858 |
{EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, |
|
1859 |
{EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, |
|
1860 |
{EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, |
|
1861 |
{EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, |
|
1862 |
{EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, |
|
1863 |
{EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, |
|
1864 |
{EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, |
|
23532
7e8719ce96ea
8036767: PPC64: Support for little endian execution model
kvn
parents:
23479
diff
changeset
|
1865 |
#if defined(VM_LITTLE_ENDIAN) |
46967
89fb7df32425
8186655: Identifier strings for PowerPC 64 LE and PowerPC 64 are swapped
glaubitz
parents:
46811
diff
changeset
|
1866 |
{EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2LSB, (char*)"Power PC 64 LE"}, |
46990
b7849991ae55
8186723: Add SuperH as new architecture for linux
glaubitz
parents:
46967
diff
changeset
|
1867 |
{EM_SH, EM_SH, ELFCLASS32, ELFDATA2LSB, (char*)"SuperH"}, |
23532
7e8719ce96ea
8036767: PPC64: Support for little endian execution model
kvn
parents:
23479
diff
changeset
|
1868 |
#else |
46967
89fb7df32425
8186655: Identifier strings for PowerPC 64 LE and PowerPC 64 are swapped
glaubitz
parents:
46811
diff
changeset
|
1869 |
{EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, |
46990
b7849991ae55
8186723: Add SuperH as new architecture for linux
glaubitz
parents:
46967
diff
changeset
|
1870 |
{EM_SH, EM_SH, ELFCLASS32, ELFDATA2MSB, (char*)"SuperH BE"}, |
23532
7e8719ce96ea
8036767: PPC64: Support for little endian execution model
kvn
parents:
23479
diff
changeset
|
1871 |
#endif |
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1872 |
{EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM"}, |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1873 |
// we only support 64 bit z architecture |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1874 |
{EM_S390, EM_S390, ELFCLASS64, ELFDATA2MSB, (char*)"IBM System/390"}, |
4013 | 1875 |
{EM_ALPHA, EM_ALPHA, ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"}, |
1876 |
{EM_MIPS_RS3_LE, EM_MIPS_RS3_LE, ELFCLASS32, ELFDATA2LSB, (char*)"MIPSel"}, |
|
1877 |
{EM_MIPS, EM_MIPS, ELFCLASS32, ELFDATA2MSB, (char*)"MIPS"}, |
|
1878 |
{EM_PARISC, EM_PARISC, ELFCLASS32, ELFDATA2MSB, (char*)"PARISC"}, |
|
29180 | 1879 |
{EM_68K, EM_68K, ELFCLASS32, ELFDATA2MSB, (char*)"M68k"}, |
1880 |
{EM_AARCH64, EM_AARCH64, ELFCLASS64, ELFDATA2LSB, (char*)"AARCH64"}, |
|
1 | 1881 |
}; |
1882 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1883 |
#if (defined IA32) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1884 |
static Elf32_Half running_arch_code=EM_386; |
51641
9ce4a0d718c7
8165440: Add Zero support for x86_64-linux-gnux32 target
glaubitz
parents:
51418
diff
changeset
|
1885 |
#elif (defined AMD64) || (defined X32) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1886 |
static Elf32_Half running_arch_code=EM_X86_64; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1887 |
#elif (defined IA64) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1888 |
static Elf32_Half running_arch_code=EM_IA_64; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1889 |
#elif (defined __sparc) && (defined _LP64) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1890 |
static Elf32_Half running_arch_code=EM_SPARCV9; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1891 |
#elif (defined __sparc) && (!defined _LP64) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1892 |
static Elf32_Half running_arch_code=EM_SPARC; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1893 |
#elif (defined __powerpc64__) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1894 |
static Elf32_Half running_arch_code=EM_PPC64; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1895 |
#elif (defined __powerpc__) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1896 |
static Elf32_Half running_arch_code=EM_PPC; |
42062 | 1897 |
#elif (defined AARCH64) |
1898 |
static Elf32_Half running_arch_code=EM_AARCH64; |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1899 |
#elif (defined ARM) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1900 |
static Elf32_Half running_arch_code=EM_ARM; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1901 |
#elif (defined S390) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1902 |
static Elf32_Half running_arch_code=EM_S390; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1903 |
#elif (defined ALPHA) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1904 |
static Elf32_Half running_arch_code=EM_ALPHA; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1905 |
#elif (defined MIPSEL) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1906 |
static Elf32_Half running_arch_code=EM_MIPS_RS3_LE; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1907 |
#elif (defined PARISC) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1908 |
static Elf32_Half running_arch_code=EM_PARISC; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1909 |
#elif (defined MIPS) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1910 |
static Elf32_Half running_arch_code=EM_MIPS; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1911 |
#elif (defined M68K) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1912 |
static Elf32_Half running_arch_code=EM_68K; |
46990
b7849991ae55
8186723: Add SuperH as new architecture for linux
glaubitz
parents:
46967
diff
changeset
|
1913 |
#elif (defined SH) |
b7849991ae55
8186723: Add SuperH as new architecture for linux
glaubitz
parents:
46967
diff
changeset
|
1914 |
static Elf32_Half running_arch_code=EM_SH; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1915 |
#else |
1 | 1916 |
#error Method os::dll_load requires that one of following is defined:\ |
46990
b7849991ae55
8186723: Add SuperH as new architecture for linux
glaubitz
parents:
46967
diff
changeset
|
1917 |
AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, S390, SH, __sparc |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1918 |
#endif |
1 | 1919 |
|
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1920 |
// Identify compatibility class for VM's architecture and library's architecture |
1 | 1921 |
// Obtain string descriptions for architectures |
1922 |
||
1923 |
arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; |
|
1924 |
int running_arch_index=-1; |
|
1925 |
||
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
1926 |
for (unsigned int i=0; i < ARRAY_SIZE(arch_array); i++) { |
1 | 1927 |
if (running_arch_code == arch_array[i].code) { |
1928 |
running_arch_index = i; |
|
1929 |
} |
|
1930 |
if (lib_arch.code == arch_array[i].code) { |
|
1931 |
lib_arch.compat_class = arch_array[i].compat_class; |
|
1932 |
lib_arch.name = arch_array[i].name; |
|
1933 |
} |
|
1934 |
} |
|
1935 |
||
1936 |
assert(running_arch_index != -1, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1937 |
"Didn't find running architecture code (running_arch_code) in arch_array"); |
1 | 1938 |
if (running_arch_index == -1) { |
1939 |
// Even though running architecture detection failed |
|
1940 |
// we may still continue with reporting dlerror() message |
|
1941 |
return NULL; |
|
1942 |
} |
|
1943 |
||
1944 |
if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { |
|
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1945 |
if (lib_arch.name != NULL) { |
1 | 1946 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, |
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1947 |
" (Possible cause: can't load %s .so on a %s platform)", |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1948 |
lib_arch.name, arch_array[running_arch_index].name); |
1 | 1949 |
} else { |
1950 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, |
|
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1951 |
" (Possible cause: can't load this .so (machine code=0x%x) on a %s platform)", |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1952 |
lib_arch.code, arch_array[running_arch_index].name); |
1 | 1953 |
} |
55556
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1954 |
return NULL; |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1955 |
} |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1956 |
|
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1957 |
if (lib_arch.endianness != arch_array[running_arch_index].endianness) { |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1958 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, " (Possible cause: endianness mismatch)"); |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1959 |
return NULL; |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1960 |
} |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1961 |
|
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1962 |
// ELF file class/capacity : 0 - invalid, 1 - 32bit, 2 - 64bit |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1963 |
if (lib_arch.elf_class > 2 || lib_arch.elf_class < 1) { |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1964 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, " (Possible cause: invalid ELF file class)"); |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1965 |
return NULL; |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1966 |
} |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1967 |
|
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1968 |
if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1969 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1970 |
" (Possible cause: architecture word width mismatch, can't load %d-bit .so on a %d-bit platform)", |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1971 |
(int) lib_arch.elf_class * 32, arch_array[running_arch_index].elf_class * 32); |
19d0b382f086
8226238: Improve error output and fix elf issues in os::dll_load
mbaesken
parents:
55325
diff
changeset
|
1972 |
return NULL; |
1 | 1973 |
} |
1974 |
||
1975 |
return NULL; |
|
1976 |
} |
|
1977 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1978 |
void * os::Linux::dlopen_helper(const char *filename, char *ebuf, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1979 |
int ebuflen) { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1980 |
void * result = ::dlopen(filename, RTLD_LAZY); |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1981 |
if (result == NULL) { |
55291 | 1982 |
const char* error_report = ::dlerror(); |
1983 |
if (error_report == NULL) { |
|
1984 |
error_report = "dlerror returned no error description"; |
|
1985 |
} |
|
1986 |
if (ebuf != NULL && ebuflen > 0) { |
|
1987 |
::strncpy(ebuf, error_report, ebuflen-1); |
|
1988 |
ebuf[ebuflen-1]='\0'; |
|
1989 |
} |
|
1990 |
Events::log(NULL, "Loading shared library %s failed, %s", filename, error_report); |
|
57651
ddae2da329ed
8228902: add os::dll_load to the unified logging os category
mbaesken
parents:
57599
diff
changeset
|
1991 |
log_info(os)("shared library load of %s failed, %s", filename, error_report); |
55291 | 1992 |
} else { |
1993 |
Events::log(NULL, "Loaded shared library %s", filename); |
|
57651
ddae2da329ed
8228902: add os::dll_load to the unified logging os category
mbaesken
parents:
57599
diff
changeset
|
1994 |
log_info(os)("shared library load of %s was successful", filename); |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1995 |
} |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1996 |
return result; |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1997 |
} |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1998 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1999 |
void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2000 |
int ebuflen) { |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2001 |
void * result = NULL; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2002 |
if (LoadExecStackDllInVMThread) { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
2003 |
result = dlopen_helper(filename, ebuf, ebuflen); |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2004 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2005 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2006 |
// Since 7019808, libjvm.so is linked with -noexecstack. If the VM loads a |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2007 |
// library that requires an executable stack, or which does not have this |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2008 |
// stack attribute set, dlopen changes the stack attribute to executable. The |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2009 |
// read protection of the guard pages gets lost. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2010 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2011 |
// Need to check _stack_is_executable again as multiple VM_LinuxDllLoad |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2012 |
// may have been queued at the same time. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2013 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2014 |
if (!_stack_is_executable) { |
48105
8d15b1369c7a
8167108: inconsistent handling of SR_lock can lead to crashes
dcubed
parents:
48005
diff
changeset
|
2015 |
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) { |
35071
a0910b1d3e0d
8046936: JEP 270: Reserved Stack Areas for Critical Sections
fparain
parents:
34667
diff
changeset
|
2016 |
if (!jt->stack_guard_zone_unused() && // Stack not yet fully initialized |
a0910b1d3e0d
8046936: JEP 270: Reserved Stack Areas for Critical Sections
fparain
parents:
34667
diff
changeset
|
2017 |
jt->stack_guards_enabled()) { // No pending stack overflow exceptions |
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
2018 |
if (!os::guard_memory((char *)jt->stack_end(), jt->stack_guard_zone_size())) { |
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2019 |
warning("Attempt to reguard stack yellow zone failed."); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2020 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2021 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2022 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2023 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2024 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2025 |
return result; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2026 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
2027 |
|
950 | 2028 |
void* os::dll_lookup(void* handle, const char* name) { |
2029 |
void* res = dlsym(handle, name); |
|
2030 |
return res; |
|
2031 |
} |
|
1 | 2032 |
|
22528
bd3821442010
8031968: Mac OS X: VM starts the agent by calling both Agent_OnAttach and Agent_OnAttach_L functions if its agent library is dynamically linked.
sla
parents:
21185
diff
changeset
|
2033 |
void* os::get_default_process_handle() { |
bd3821442010
8031968: Mac OS X: VM starts the agent by calling both Agent_OnAttach and Agent_OnAttach_L functions if its agent library is dynamically linked.
sla
parents:
21185
diff
changeset
|
2034 |
return (void*)::dlopen(NULL, RTLD_LAZY); |
bd3821442010
8031968: Mac OS X: VM starts the agent by calling both Agent_OnAttach and Agent_OnAttach_L functions if its agent library is dynamically linked.
sla
parents:
21185
diff
changeset
|
2035 |
} |
1 | 2036 |
|
51942
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2037 |
static bool _print_ascii_file(const char* filename, outputStream* st, const char* hdr = NULL) { |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2038 |
int fd = ::open(filename, O_RDONLY); |
1 | 2039 |
if (fd == -1) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2040 |
return false; |
1 | 2041 |
} |
2042 |
||
51942
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2043 |
if (hdr != NULL) { |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2044 |
st->print_cr("%s", hdr); |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2045 |
} |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2046 |
|
38658
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
2047 |
char buf[33]; |
1 | 2048 |
int bytes; |
38658
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
2049 |
buf[32] = '\0'; |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
2050 |
while ((bytes = ::read(fd, buf, sizeof(buf)-1)) > 0) { |
1 | 2051 |
st->print_raw(buf, bytes); |
2052 |
} |
|
2053 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2054 |
::close(fd); |
1 | 2055 |
|
2056 |
return true; |
|
2057 |
} |
|
2058 |
||
2059 |
void os::print_dll_info(outputStream *st) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2060 |
st->print_cr("Dynamic libraries:"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2061 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2062 |
char fname[32]; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2063 |
pid_t pid = os::Linux::gettid(); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2064 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2065 |
jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2066 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2067 |
if (!_print_ascii_file(fname, st)) { |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2068 |
st->print("Can not get library information for pid = %d\n", pid); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2069 |
} |
1 | 2070 |
} |
2071 |
||
26557
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2072 |
int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2073 |
FILE *procmapsFile = NULL; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2074 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2075 |
// Open the procfs maps file for the current process |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2076 |
if ((procmapsFile = fopen("/proc/self/maps", "r")) != NULL) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2077 |
// Allocate PATH_MAX for file name plus a reasonable size for other fields. |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2078 |
char line[PATH_MAX + 100]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2079 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2080 |
// Read line by line from 'file' |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2081 |
while (fgets(line, sizeof(line), procmapsFile) != NULL) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2082 |
u8 base, top, offset, inode; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2083 |
char permissions[5]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2084 |
char device[6]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2085 |
char name[PATH_MAX + 1]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2086 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2087 |
// Parse fields from line |
53260
fbc921683f02
8216559: [JFR] Native libraries not correctly parsed from /proc/self/maps
sgehwolf
parents:
53155
diff
changeset
|
2088 |
sscanf(line, UINT64_FORMAT_X "-" UINT64_FORMAT_X " %4s " UINT64_FORMAT_X " %7s " INT64_FORMAT " %s", |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
2089 |
&base, &top, permissions, &offset, device, &inode, name); |
26557
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2090 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2091 |
// Filter by device id '00:00' so that we only get file system mapped files. |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2092 |
if (strcmp(device, "00:00") != 0) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2093 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2094 |
// Call callback with the fields of interest |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2095 |
if(callback(name, (address)base, (address)top, param)) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2096 |
// Oops abort, callback aborted |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2097 |
fclose(procmapsFile); |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2098 |
return 1; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2099 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2100 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2101 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2102 |
fclose(procmapsFile); |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2103 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2104 |
return 0; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2105 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
2106 |
|
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2107 |
void os::print_os_info_brief(outputStream* st) { |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2108 |
os::Linux::print_distro_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2109 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2110 |
os::Posix::print_uname_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2111 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2112 |
os::Linux::print_libversion_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2113 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2114 |
} |
1 | 2115 |
|
2116 |
void os::print_os_info(outputStream* st) { |
|
2117 |
st->print("OS:"); |
|
2118 |
||
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2119 |
os::Linux::print_distro_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2120 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2121 |
os::Posix::print_uname_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2122 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2123 |
// Print warning if unsafe chroot environment detected |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2124 |
if (unsafe_chroot_detected) { |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2125 |
st->print("WARNING!! "); |
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
2126 |
st->print_cr("%s", unstable_chroot_error); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2127 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2128 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2129 |
os::Linux::print_libversion_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2130 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2131 |
os::Posix::print_rlimit_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2132 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2133 |
os::Posix::print_load_average(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2134 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2135 |
os::Linux::print_full_memory_info(st); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
2136 |
|
50504
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2137 |
os::Linux::print_proc_sys_info(st); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2138 |
|
51942
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2139 |
os::Linux::print_ld_preload_file(st); |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2140 |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
2141 |
os::Linux::print_container_info(st); |
53565
55ba2125ba24
8217786: Provide virtualization related info in the hs_error file on linux s390x
mbaesken
parents:
53461
diff
changeset
|
2142 |
|
54485
ddc19ea5059c
8219241: Provide basic virtualization related info in the hs_error file on linux/windows x86_64
mbaesken
parents:
54470
diff
changeset
|
2143 |
VM_Version::print_platform_virtualization_info(st); |
54470
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2144 |
|
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2145 |
os::Linux::print_steal_info(st); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2146 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2147 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2148 |
// Try to identify popular distros. |
19965
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2149 |
// Most Linux distributions have a /etc/XXX-release file, which contains |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2150 |
// the OS version string. Newer Linux distributions have a /etc/lsb-release |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2151 |
// file that also contains the OS version string. Some have more than one |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2152 |
// /etc/XXX-release file (e.g. Mandrake has both /etc/mandrake-release and |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2153 |
// /etc/redhat-release.), so the order is important. |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2154 |
// Any Linux that is based on Redhat (i.e. Oracle, Mandrake, Sun JDS...) have |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2155 |
// their own specific XXX-release file as well as a redhat-release file. |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2156 |
// Because of this the XXX-release file needs to be searched for before the |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2157 |
// redhat-release file. |
38067
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2158 |
// Since Red Hat and SuSE have an lsb-release file that is not very descriptive the |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2159 |
// search for redhat-release / SuSE-release needs to be before lsb-release. |
19965
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2160 |
// Since the lsb-release file is the new standard it needs to be searched |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2161 |
// before the older style release files. |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2162 |
// Searching system-release (Red Hat) and os-release (other Linuxes) are a |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2163 |
// next to last resort. The os-release file is a new standard that contains |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2164 |
// distribution information and the system-release file seems to be an old |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2165 |
// standard that has been replaced by the lsb-release and os-release files. |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2166 |
// Searching for the debian_version file is the last resort. It contains |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2167 |
// an informative string like "6.0.6" or "wheezy/sid". Because of this |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2168 |
// "Debian " is printed before the contents of the debian_version file. |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2169 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2170 |
const char* distro_files[] = { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2171 |
"/etc/oracle-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2172 |
"/etc/mandriva-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2173 |
"/etc/mandrake-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2174 |
"/etc/sun-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2175 |
"/etc/redhat-release", |
38067
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2176 |
"/etc/SuSE-release", |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2177 |
"/etc/lsb-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2178 |
"/etc/turbolinux-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2179 |
"/etc/gentoo-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2180 |
"/etc/ltib-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2181 |
"/etc/angstrom-version", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2182 |
"/etc/system-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2183 |
"/etc/os-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2184 |
NULL }; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2185 |
|
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2186 |
void os::Linux::print_distro_info(outputStream* st) { |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2187 |
for (int i = 0;; i++) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2188 |
const char* file = distro_files[i]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2189 |
if (file == NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2190 |
break; // done |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2191 |
} |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2192 |
// If file prints, we found it. |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2193 |
if (_print_ascii_file(file, st)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2194 |
return; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2195 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2196 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2197 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2198 |
if (file_exists("/etc/debian_version")) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2199 |
st->print("Debian "); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2200 |
_print_ascii_file("/etc/debian_version", st); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2201 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2202 |
st->print("Linux"); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2203 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2204 |
st->cr(); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2205 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2206 |
|
38067
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2207 |
static void parse_os_info_helper(FILE* fp, char* distro, size_t length, bool get_first_line) { |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2208 |
char buf[256]; |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2209 |
while (fgets(buf, sizeof(buf), fp)) { |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2210 |
// Edit out extra stuff in expected format |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2211 |
if (strstr(buf, "DISTRIB_DESCRIPTION=") != NULL || strstr(buf, "PRETTY_NAME=") != NULL) { |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2212 |
char* ptr = strstr(buf, "\""); // the name is in quotes |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2213 |
if (ptr != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2214 |
ptr++; // go beyond first quote |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2215 |
char* nl = strchr(ptr, '\"'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2216 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2217 |
strncpy(distro, ptr, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2218 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2219 |
ptr = strstr(buf, "="); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2220 |
ptr++; // go beyond equals then |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2221 |
char* nl = strchr(ptr, '\n'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2222 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2223 |
strncpy(distro, ptr, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2224 |
} |
38067
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2225 |
return; |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2226 |
} else if (get_first_line) { |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2227 |
char* nl = strchr(buf, '\n'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2228 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2229 |
strncpy(distro, buf, length); |
38067
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2230 |
return; |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2231 |
} |
38067
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2232 |
} |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2233 |
// print last line and close |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2234 |
char* nl = strchr(buf, '\n'); |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2235 |
if (nl != NULL) *nl = '\0'; |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2236 |
strncpy(distro, buf, length); |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2237 |
} |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2238 |
|
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2239 |
static void parse_os_info(char* distro, size_t length, const char* file) { |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2240 |
FILE* fp = fopen(file, "r"); |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2241 |
if (fp != NULL) { |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2242 |
// if suse format, print out first line |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2243 |
bool get_first_line = (strcmp(file, "/etc/SuSE-release") == 0); |
74a151d8e51b
8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
mbaesken
parents:
37465
diff
changeset
|
2244 |
parse_os_info_helper(fp, distro, length, get_first_line); |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2245 |
fclose(fp); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2246 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2247 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2248 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2249 |
void os::get_summary_os_info(char* buf, size_t buflen) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2250 |
for (int i = 0;; i++) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2251 |
const char* file = distro_files[i]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2252 |
if (file == NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2253 |
break; // ran out of distro_files |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2254 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2255 |
if (file_exists(file)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2256 |
parse_os_info(buf, buflen, file); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2257 |
return; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2258 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2259 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2260 |
// special case for debian |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2261 |
if (file_exists("/etc/debian_version")) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2262 |
strncpy(buf, "Debian ", buflen); |
51070 | 2263 |
if (buflen > 7) { |
2264 |
parse_os_info(&buf[7], buflen-7, "/etc/debian_version"); |
|
2265 |
} |
|
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2266 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2267 |
strncpy(buf, "Linux", buflen); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2268 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2269 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2270 |
|
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2271 |
void os::Linux::print_libversion_info(outputStream* st) { |
1 | 2272 |
// libc, pthread |
2273 |
st->print("libc:"); |
|
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
2274 |
st->print("%s ", os::Linux::glibc_version()); |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
2275 |
st->print("%s ", os::Linux::libpthread_version()); |
1 | 2276 |
st->cr(); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2277 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2278 |
|
50504
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2279 |
void os::Linux::print_proc_sys_info(outputStream* st) { |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2280 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2281 |
st->print_cr("/proc/sys/kernel/threads-max (system-wide limit on the number of threads):"); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2282 |
_print_ascii_file("/proc/sys/kernel/threads-max", st); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2283 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2284 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2285 |
|
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2286 |
st->print_cr("/proc/sys/vm/max_map_count (maximum number of memory map areas a process may have):"); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2287 |
_print_ascii_file("/proc/sys/vm/max_map_count", st); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2288 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2289 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2290 |
|
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2291 |
st->print_cr("/proc/sys/kernel/pid_max (system-wide limit on number of process identifiers):"); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2292 |
_print_ascii_file("/proc/sys/kernel/pid_max", st); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2293 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2294 |
st->cr(); |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2295 |
} |
6dfe5ae92fa8
8204598: add more thread-related system settings info to hs_error file on Linux
mbaesken
parents:
50429
diff
changeset
|
2296 |
|
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2297 |
void os::Linux::print_full_memory_info(outputStream* st) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2298 |
st->print("\n/proc/meminfo:\n"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2299 |
_print_ascii_file("/proc/meminfo", st); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2300 |
st->cr(); |
10023
e99d9a03c0f5
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
9625
diff
changeset
|
2301 |
} |
e99d9a03c0f5
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
9625
diff
changeset
|
2302 |
|
51942
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2303 |
void os::Linux::print_ld_preload_file(outputStream* st) { |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2304 |
_print_ascii_file("/etc/ld.so.preload", st, "\n/etc/ld.so.preload:"); |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2305 |
st->cr(); |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2306 |
} |
1d12935177ed
8210964: add more ld preloading related info to hs_error file on Linux
mbaesken
parents:
51641
diff
changeset
|
2307 |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
2308 |
void os::Linux::print_container_info(outputStream* st) { |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2309 |
if (!OSContainer::is_containerized()) { |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2310 |
return; |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2311 |
} |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2312 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2313 |
st->print("container (cgroup) information:\n"); |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2314 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2315 |
const char *p_ct = OSContainer::container_type(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2316 |
st->print("container_type: %s\n", p_ct != NULL ? p_ct : "not supported"); |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2317 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2318 |
char *p = OSContainer::cpu_cpuset_cpus(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2319 |
st->print("cpu_cpuset_cpus: %s\n", p != NULL ? p : "not supported"); |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2320 |
free(p); |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2321 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2322 |
p = OSContainer::cpu_cpuset_memory_nodes(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2323 |
st->print("cpu_memory_nodes: %s\n", p != NULL ? p : "not supported"); |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2324 |
free(p); |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2325 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2326 |
int i = OSContainer::active_processor_count(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2327 |
st->print("active_processor_count: "); |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2328 |
if (i > 0) { |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2329 |
st->print("%d\n", i); |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2330 |
} else { |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2331 |
st->print("not supported\n"); |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2332 |
} |
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2333 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2334 |
i = OSContainer::cpu_quota(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2335 |
st->print("cpu_quota: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2336 |
if (i > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2337 |
st->print("%d\n", i); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2338 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2339 |
st->print("%s\n", i == OSCONTAINER_ERROR ? "not supported" : "no quota"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2340 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2341 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2342 |
i = OSContainer::cpu_period(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2343 |
st->print("cpu_period: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2344 |
if (i > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2345 |
st->print("%d\n", i); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2346 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2347 |
st->print("%s\n", i == OSCONTAINER_ERROR ? "not supported" : "no period"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2348 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2349 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2350 |
i = OSContainer::cpu_shares(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2351 |
st->print("cpu_shares: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2352 |
if (i > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2353 |
st->print("%d\n", i); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2354 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2355 |
st->print("%s\n", i == OSCONTAINER_ERROR ? "not supported" : "no shares"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2356 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2357 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2358 |
jlong j = OSContainer::memory_limit_in_bytes(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2359 |
st->print("memory_limit_in_bytes: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2360 |
if (j > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2361 |
st->print(JLONG_FORMAT "\n", j); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2362 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2363 |
st->print("%s\n", j == OSCONTAINER_ERROR ? "not supported" : "unlimited"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2364 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2365 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2366 |
j = OSContainer::memory_and_swap_limit_in_bytes(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2367 |
st->print("memory_and_swap_limit_in_bytes: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2368 |
if (j > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2369 |
st->print(JLONG_FORMAT "\n", j); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2370 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2371 |
st->print("%s\n", j == OSCONTAINER_ERROR ? "not supported" : "unlimited"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2372 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2373 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2374 |
j = OSContainer::memory_soft_limit_in_bytes(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2375 |
st->print("memory_soft_limit_in_bytes: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2376 |
if (j > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2377 |
st->print(JLONG_FORMAT "\n", j); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2378 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2379 |
st->print("%s\n", j == OSCONTAINER_ERROR ? "not supported" : "unlimited"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2380 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2381 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2382 |
j = OSContainer::OSContainer::memory_usage_in_bytes(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2383 |
st->print("memory_usage_in_bytes: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2384 |
if (j > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2385 |
st->print(JLONG_FORMAT "\n", j); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2386 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2387 |
st->print("%s\n", j == OSCONTAINER_ERROR ? "not supported" : "unlimited"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2388 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2389 |
|
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2390 |
j = OSContainer::OSContainer::memory_max_usage_in_bytes(); |
54211
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2391 |
st->print("memory_max_usage_in_bytes: "); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2392 |
if (j > 0) { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2393 |
st->print(JLONG_FORMAT "\n", j); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2394 |
} else { |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2395 |
st->print("%s\n", j == OSCONTAINER_ERROR ? "not supported" : "unlimited"); |
67c58bd66e82
8220658: Improve the readability of container information in the error log
jiefu
parents:
54186
diff
changeset
|
2396 |
} |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
48865
diff
changeset
|
2397 |
st->cr(); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
2398 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
2399 |
|
54470
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2400 |
void os::Linux::print_steal_info(outputStream* st) { |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2401 |
if (has_initial_tick_info) { |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2402 |
CPUPerfTicks pticks; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2403 |
bool res = os::Linux::get_tick_information(&pticks, -1); |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2404 |
|
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2405 |
if (res && pticks.has_steal_ticks) { |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2406 |
uint64_t steal_ticks_difference = pticks.steal - initial_steal_ticks; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2407 |
uint64_t total_ticks_difference = pticks.total - initial_total_ticks; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2408 |
double steal_ticks_perc = 0.0; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2409 |
if (total_ticks_difference != 0) { |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2410 |
steal_ticks_perc = (double) steal_ticks_difference / total_ticks_difference; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2411 |
} |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2412 |
st->print_cr("Steal ticks since vm start: " UINT64_FORMAT, steal_ticks_difference); |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2413 |
st->print_cr("Steal ticks percentage since vm start:%7.3f", steal_ticks_perc); |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2414 |
} |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2415 |
} |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2416 |
} |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
2417 |
|
1 | 2418 |
void os::print_memory_info(outputStream* st) { |
2419 |
||
2420 |
st->print("Memory:"); |
|
2421 |
st->print(" %dk page", os::vm_page_size()>>10); |
|
2422 |
||
2423 |
// values in struct sysinfo are "unsigned long" |
|
2424 |
struct sysinfo si; |
|
2425 |
sysinfo(&si); |
|
2426 |
||
2427 |
st->print(", physical " UINT64_FORMAT "k", |
|
2428 |
os::physical_memory() >> 10); |
|
2429 |
st->print("(" UINT64_FORMAT "k free)", |
|
2430 |
os::available_memory() >> 10); |
|
2431 |
st->print(", swap " UINT64_FORMAT "k", |
|
2432 |
((jlong)si.totalswap * si.mem_unit) >> 10); |
|
2433 |
st->print("(" UINT64_FORMAT "k free)", |
|
2434 |
((jlong)si.freeswap * si.mem_unit) >> 10); |
|
2435 |
st->cr(); |
|
2436 |
} |
|
2437 |
||
31356
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2438 |
// Print the first "model name" line and the first "flags" line |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2439 |
// that we find and nothing more. We assume "model name" comes |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2440 |
// before "flags" so if we find a second "model name", then the |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2441 |
// "flags" field is considered missing. |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2442 |
static bool print_model_name_and_flags(outputStream* st, char* buf, size_t buflen) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2443 |
#if defined(IA32) || defined(AMD64) |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2444 |
// Other platforms have less repetitive cpuinfo files |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2445 |
FILE *fp = fopen("/proc/cpuinfo", "r"); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2446 |
if (fp) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2447 |
while (!feof(fp)) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2448 |
if (fgets(buf, buflen, fp)) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2449 |
// Assume model name comes before flags |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2450 |
bool model_name_printed = false; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2451 |
if (strstr(buf, "model name") != NULL) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2452 |
if (!model_name_printed) { |
37430
fd743dadef12
8151939: VM_Version_init() print buffer is too small
coleenp
parents:
37155
diff
changeset
|
2453 |
st->print_raw("CPU Model and flags from /proc/cpuinfo:\n"); |
31356
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2454 |
st->print_raw(buf); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2455 |
model_name_printed = true; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2456 |
} else { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2457 |
// model name printed but not flags? Odd, just return |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2458 |
fclose(fp); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2459 |
return true; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2460 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2461 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2462 |
// print the flags line too |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2463 |
if (strstr(buf, "flags") != NULL) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2464 |
st->print_raw(buf); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2465 |
fclose(fp); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2466 |
return true; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2467 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2468 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2469 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2470 |
fclose(fp); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2471 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2472 |
#endif // x86 platforms |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2473 |
return false; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2474 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2475 |
|
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2476 |
void os::pd_print_cpu_info(outputStream* st, char* buf, size_t buflen) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2477 |
// Only print the model name if the platform provides this as a summary |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2478 |
if (!print_model_name_and_flags(st, buf, buflen)) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2479 |
st->print("\n/proc/cpuinfo:\n"); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2480 |
if (!_print_ascii_file("/proc/cpuinfo", st)) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2481 |
st->print_cr(" <Not Available>"); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2482 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2483 |
} |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2484 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2485 |
|
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2486 |
#if defined(AMD64) || defined(IA32) || defined(X32) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2487 |
const char* search_string = "model name"; |
46811 | 2488 |
#elif defined(M68K) |
2489 |
const char* search_string = "CPU"; |
|
42062 | 2490 |
#elif defined(PPC64) |
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2491 |
const char* search_string = "cpu"; |
42062 | 2492 |
#elif defined(S390) |
54186
3827cd66e788
8220781: linux-s390 : os::get_summary_cpu_info gives bad output
mbaesken
parents:
54090
diff
changeset
|
2493 |
const char* search_string = "machine ="; |
42062 | 2494 |
#elif defined(SPARC) |
35075
ca79cbf3f106
8073139: PPC64: User-visible arch directory and os.arch value on ppc64le cause issues with Java tooling
asmundak
parents:
35071
diff
changeset
|
2495 |
const char* search_string = "cpu"; |
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2496 |
#else |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2497 |
const char* search_string = "Processor"; |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2498 |
#endif |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2499 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2500 |
// Parses the cpuinfo file for string representing the model name. |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2501 |
void os::get_summary_cpu_info(char* cpuinfo, size_t length) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2502 |
FILE* fp = fopen("/proc/cpuinfo", "r"); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2503 |
if (fp != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2504 |
while (!feof(fp)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2505 |
char buf[256]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2506 |
if (fgets(buf, sizeof(buf), fp)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2507 |
char* start = strstr(buf, search_string); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2508 |
if (start != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2509 |
char *ptr = start + strlen(search_string); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2510 |
char *end = buf + strlen(buf); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2511 |
while (ptr != end) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2512 |
// skip whitespace and colon for the rest of the name. |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2513 |
if (*ptr != ' ' && *ptr != '\t' && *ptr != ':') { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2514 |
break; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2515 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2516 |
ptr++; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2517 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2518 |
if (ptr != end) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2519 |
// reasonable string, get rid of newline and keep the rest |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2520 |
char* nl = strchr(buf, '\n'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2521 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2522 |
strncpy(cpuinfo, ptr, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2523 |
fclose(fp); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2524 |
return; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2525 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2526 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2527 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2528 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2529 |
fclose(fp); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2530 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2531 |
// cpuinfo not found or parsing failed, just print generic string. The entire |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2532 |
// /proc/cpuinfo file will be printed later in the file (or enough of it for x86) |
42062 | 2533 |
#if defined(AARCH64) |
2534 |
strncpy(cpuinfo, "AArch64", length); |
|
2535 |
#elif defined(AMD64) |
|
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2536 |
strncpy(cpuinfo, "x86_64", length); |
42062 | 2537 |
#elif defined(ARM) // Order wrt. AARCH64 is relevant! |
2538 |
strncpy(cpuinfo, "ARM", length); |
|
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2539 |
#elif defined(IA32) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2540 |
strncpy(cpuinfo, "x86_32", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2541 |
#elif defined(IA64) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2542 |
strncpy(cpuinfo, "IA64", length); |
42062 | 2543 |
#elif defined(PPC) |
2544 |
strncpy(cpuinfo, "PPC64", length); |
|
2545 |
#elif defined(S390) |
|
2546 |
strncpy(cpuinfo, "S390", length); |
|
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2547 |
#elif defined(SPARC) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2548 |
strncpy(cpuinfo, "sparcv9", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2549 |
#elif defined(ZERO_LIBARCH) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2550 |
strncpy(cpuinfo, ZERO_LIBARCH, length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2551 |
#else |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2552 |
strncpy(cpuinfo, "unknown", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2553 |
#endif |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2554 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2555 |
|
1 | 2556 |
static void print_signal_handler(outputStream* st, int sig, |
2557 |
char* buf, size_t buflen); |
|
2558 |
||
2559 |
void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { |
|
2560 |
st->print_cr("Signal Handlers:"); |
|
2561 |
print_signal_handler(st, SIGSEGV, buf, buflen); |
|
2562 |
print_signal_handler(st, SIGBUS , buf, buflen); |
|
2563 |
print_signal_handler(st, SIGFPE , buf, buflen); |
|
2564 |
print_signal_handler(st, SIGPIPE, buf, buflen); |
|
2565 |
print_signal_handler(st, SIGXFSZ, buf, buflen); |
|
2566 |
print_signal_handler(st, SIGILL , buf, buflen); |
|
2567 |
print_signal_handler(st, SR_signum, buf, buflen); |
|
2568 |
print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen); |
|
2569 |
print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); |
|
2570 |
print_signal_handler(st, SHUTDOWN3_SIGNAL , buf, buflen); |
|
2571 |
print_signal_handler(st, BREAK_SIGNAL, buf, buflen); |
|
22848
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
2572 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
2573 |
print_signal_handler(st, SIGTRAP, buf, buflen); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
2574 |
#endif |
1 | 2575 |
} |
2576 |
||
2577 |
static char saved_jvm_path[MAXPATHLEN] = {0}; |
|
2578 |
||
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2579 |
// Find the full path to the current module, libjvm.so |
5922 | 2580 |
void os::jvm_path(char *buf, jint buflen) { |
1 | 2581 |
// Error checking. |
5922 | 2582 |
if (buflen < MAXPATHLEN) { |
1 | 2583 |
assert(false, "must use a large-enough buffer"); |
2584 |
buf[0] = '\0'; |
|
2585 |
return; |
|
2586 |
} |
|
2587 |
// Lazy resolve the path to current module. |
|
2588 |
if (saved_jvm_path[0] != 0) { |
|
2589 |
strcpy(buf, saved_jvm_path); |
|
2590 |
return; |
|
2591 |
} |
|
2592 |
||
2593 |
char dli_fname[MAXPATHLEN]; |
|
2594 |
bool ret = dll_address_to_library_name( |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2595 |
CAST_FROM_FN_PTR(address, os::jvm_path), |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2596 |
dli_fname, sizeof(dli_fname), NULL); |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2597 |
assert(ret, "cannot locate libjvm"); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2598 |
char *rp = NULL; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2599 |
if (ret && dli_fname[0] != '\0') { |
46331 | 2600 |
rp = os::Posix::realpath(dli_fname, buf, buflen); |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2601 |
} |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2602 |
if (rp == NULL) { |
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1664
diff
changeset
|
2603 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2604 |
} |
1 | 2605 |
|
22734
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2606 |
if (Arguments::sun_java_launcher_is_altjvm()) { |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2607 |
// Support for the java launcher's '-XXaltjvm=<path>' option. Typical |
42633
0c23e9d8fccf
8066474: Remove the lib/ directory from Linux and Solaris images
erikj
parents:
42062
diff
changeset
|
2608 |
// value for buf is "<JAVA_HOME>/jre/lib/<vmtype>/libjvm.so". |
22734
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2609 |
// If "/jre/lib/" appears at the right place in the string, then |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2610 |
// assume we are installed in a JDK and we're done. Otherwise, check |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2611 |
// for a JAVA_HOME environment variable and fix up the path so it |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2612 |
// looks like libjvm.so is installed there (append a fake suffix |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2613 |
// hotspot/libjvm.so). |
1 | 2614 |
const char *p = buf + strlen(buf) - 1; |
2615 |
for (int count = 0; p > buf && count < 5; ++count) { |
|
2616 |
for (--p; p > buf && *p != '/'; --p) |
|
2617 |
/* empty */ ; |
|
2618 |
} |
|
2619 |
||
2620 |
if (strncmp(p, "/jre/lib/", 9) != 0) { |
|
2621 |
// Look for JAVA_HOME in the environment. |
|
2622 |
char* java_home_var = ::getenv("JAVA_HOME"); |
|
2623 |
if (java_home_var != NULL && java_home_var[0] != 0) { |
|
5922 | 2624 |
char* jrelib_p; |
2625 |
int len; |
|
2626 |
||
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2627 |
// Check the current module name "libjvm.so". |
1 | 2628 |
p = strrchr(buf, '/'); |
27471 | 2629 |
if (p == NULL) { |
2630 |
return; |
|
2631 |
} |
|
1 | 2632 |
assert(strstr(p, "/libjvm") == p, "invalid library name"); |
2633 |
||
46331 | 2634 |
rp = os::Posix::realpath(java_home_var, buf, buflen); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2635 |
if (rp == NULL) { |
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1664
diff
changeset
|
2636 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2637 |
} |
5922 | 2638 |
|
2639 |
// determine if this is a legacy image or modules image |
|
2640 |
// modules image doesn't have "jre" subdirectory |
|
2641 |
len = strlen(buf); |
|
25503 | 2642 |
assert(len < buflen, "Ran out of buffer room"); |
5922 | 2643 |
jrelib_p = buf + len; |
42633
0c23e9d8fccf
8066474: Remove the lib/ directory from Linux and Solaris images
erikj
parents:
42062
diff
changeset
|
2644 |
snprintf(jrelib_p, buflen-len, "/jre/lib"); |
5922 | 2645 |
if (0 != access(buf, F_OK)) { |
42633
0c23e9d8fccf
8066474: Remove the lib/ directory from Linux and Solaris images
erikj
parents:
42062
diff
changeset
|
2646 |
snprintf(jrelib_p, buflen-len, "/lib"); |
5922 | 2647 |
} |
2648 |
||
1 | 2649 |
if (0 == access(buf, F_OK)) { |
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2650 |
// Use current module name "libjvm.so" |
5922 | 2651 |
len = strlen(buf); |
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2652 |
snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
1 | 2653 |
} else { |
2654 |
// Go back to path of .so |
|
46331 | 2655 |
rp = os::Posix::realpath(dli_fname, buf, buflen); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2656 |
if (rp == NULL) { |
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1664
diff
changeset
|
2657 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2658 |
} |
1 | 2659 |
} |
2660 |
} |
|
2661 |
} |
|
2662 |
} |
|
2663 |
||
25503 | 2664 |
strncpy(saved_jvm_path, buf, MAXPATHLEN); |
27471 | 2665 |
saved_jvm_path[MAXPATHLEN - 1] = '\0'; |
1 | 2666 |
} |
2667 |
||
2668 |
void os::print_jni_name_prefix_on(outputStream* st, int args_size) { |
|
2669 |
// no prefix required, not even "_" |
|
2670 |
} |
|
2671 |
||
2672 |
void os::print_jni_name_suffix_on(outputStream* st, int args_size) { |
|
2673 |
// no suffix required |
|
2674 |
} |
|
2675 |
||
2676 |
//////////////////////////////////////////////////////////////////////////////// |
|
2677 |
// sun.misc.Signal support |
|
2678 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2679 |
static void UserHandler(int sig, void *siginfo, void *context) { |
1 | 2680 |
// Ctrl-C is pressed during error reporting, likely because the error |
2681 |
// handler fails to abort. Let VM die immediately. |
|
46589 | 2682 |
if (sig == SIGINT && VMError::is_error_reported()) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2683 |
os::die(); |
1 | 2684 |
} |
2685 |
||
2686 |
os::signal_notify(sig); |
|
2687 |
} |
|
2688 |
||
2689 |
void* os::user_handler() { |
|
2690 |
return CAST_FROM_FN_PTR(void*, UserHandler); |
|
2691 |
} |
|
2692 |
||
2693 |
extern "C" { |
|
2694 |
typedef void (*sa_handler_t)(int); |
|
2695 |
typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); |
|
2696 |
} |
|
2697 |
||
2698 |
void* os::signal(int signal_number, void* handler) { |
|
2699 |
struct sigaction sigAct, oldSigAct; |
|
2700 |
||
2701 |
sigfillset(&(sigAct.sa_mask)); |
|
2702 |
sigAct.sa_flags = SA_RESTART|SA_SIGINFO; |
|
2703 |
sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); |
|
2704 |
||
2705 |
if (sigaction(signal_number, &sigAct, &oldSigAct)) { |
|
2706 |
// -1 means registration failed |
|
2707 |
return (void *)-1; |
|
2708 |
} |
|
2709 |
||
2710 |
return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); |
|
2711 |
} |
|
2712 |
||
2713 |
void os::signal_raise(int signal_number) { |
|
2714 |
::raise(signal_number); |
|
2715 |
} |
|
2716 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2717 |
// The following code is moved from os.cpp for making this |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2718 |
// code platform specific, which it is by its very nature. |
1 | 2719 |
|
2720 |
// Will be modified when max signal is changed to be dynamic |
|
2721 |
int os::sigexitnum_pd() { |
|
2722 |
return NSIG; |
|
2723 |
} |
|
2724 |
||
2725 |
// a counter for each possible signal value |
|
2726 |
static volatile jint pending_signals[NSIG+1] = { 0 }; |
|
2727 |
||
2728 |
// Linux(POSIX) specific hand shaking semaphore. |
|
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2729 |
static Semaphore* sig_sem = NULL; |
31610 | 2730 |
static PosixSemaphore sr_semaphore; |
1 | 2731 |
|
50184
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
2732 |
static void jdk_misc_signal_init() { |
1 | 2733 |
// Initialize signal structures |
2734 |
::memset((void*)pending_signals, 0, sizeof(pending_signals)); |
|
2735 |
||
2736 |
// Initialize signal semaphore |
|
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2737 |
sig_sem = new Semaphore(); |
1 | 2738 |
} |
2739 |
||
2740 |
void os::signal_notify(int sig) { |
|
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2741 |
if (sig_sem != NULL) { |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2742 |
Atomic::inc(&pending_signals[sig]); |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2743 |
sig_sem->signal(); |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2744 |
} else { |
50184
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
2745 |
// Signal thread is not created with ReduceSignalUsage and jdk_misc_signal_init |
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2746 |
// initialization isn't called. |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2747 |
assert(ReduceSignalUsage, "signal semaphore should be created"); |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2748 |
} |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2749 |
} |
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2750 |
|
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2751 |
static int check_pending_signals() { |
1 | 2752 |
for (;;) { |
2753 |
for (int i = 0; i < NSIG + 1; i++) { |
|
2754 |
jint n = pending_signals[i]; |
|
2755 |
if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { |
|
2756 |
return i; |
|
2757 |
} |
|
2758 |
} |
|
2759 |
JavaThread *thread = JavaThread::current(); |
|
2760 |
ThreadBlockInVM tbivm(thread); |
|
2761 |
||
2762 |
bool threadIsSuspended; |
|
2763 |
do { |
|
2764 |
thread->set_suspend_equivalent(); |
|
2765 |
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() |
|
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2766 |
sig_sem->wait(); |
1 | 2767 |
|
2768 |
// were we externally suspended while we were waiting? |
|
2769 |
threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); |
|
2770 |
if (threadIsSuspended) { |
|
2771 |
// The semaphore has been incremented, but while we were waiting |
|
2772 |
// another thread suspended us. We don't want to continue running |
|
2773 |
// while suspended because that would surprise the thread that |
|
2774 |
// suspended us. |
|
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2775 |
sig_sem->signal(); |
1 | 2776 |
|
2777 |
thread->java_suspend_self(); |
|
2778 |
} |
|
2779 |
} while (threadIsSuspended); |
|
2780 |
} |
|
2781 |
} |
|
2782 |
||
2783 |
int os::signal_wait() { |
|
48635
612dfa1d8aad
8130039: Move the platform-specific [OS]Semaphore code
coleenp
parents:
48153
diff
changeset
|
2784 |
return check_pending_signals(); |
1 | 2785 |
} |
2786 |
||
2787 |
//////////////////////////////////////////////////////////////////////////////// |
|
2788 |
// Virtual Memory |
|
2789 |
||
2790 |
int os::vm_page_size() { |
|
2791 |
// Seems redundant as all get out |
|
2792 |
assert(os::Linux::page_size() != -1, "must call os::init"); |
|
2793 |
return os::Linux::page_size(); |
|
2794 |
} |
|
2795 |
||
2796 |
// Solaris allocates memory by pages. |
|
2797 |
int os::vm_allocation_granularity() { |
|
2798 |
assert(os::Linux::page_size() != -1, "must call os::init"); |
|
2799 |
return os::Linux::page_size(); |
|
2800 |
} |
|
2801 |
||
2802 |
// Rationale behind this function: |
|
2803 |
// current (Mon Apr 25 20:12:18 MSD 2005) oprofile drops samples without executable |
|
2804 |
// mapping for address (see lookup_dcookie() in the kernel module), thus we cannot get |
|
2805 |
// samples for JITted code. Here we create private executable mapping over the code cache |
|
2806 |
// and then we can use standard (well, almost, as mapping can change) way to provide |
|
2807 |
// info for the reporting script by storing timestamp and location of symbol |
|
2808 |
void linux_wrap_code(char* base, size_t size) { |
|
2809 |
static volatile jint cnt = 0; |
|
2810 |
||
2811 |
if (!UseOprofile) { |
|
2812 |
return; |
|
2813 |
} |
|
2814 |
||
5410
c4b979417733
6944822: Fix for 6938627 exposes problem with hard-coded buffer sizes
coleenp
parents:
5237
diff
changeset
|
2815 |
char buf[PATH_MAX+1]; |
1 | 2816 |
int num = Atomic::add(1, &cnt); |
2817 |
||
5237
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5090
diff
changeset
|
2818 |
snprintf(buf, sizeof(buf), "%s/hs-vm-%d-%d", |
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5090
diff
changeset
|
2819 |
os::get_temp_directory(), os::current_process_id(), num); |
1 | 2820 |
unlink(buf); |
2821 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2822 |
int fd = ::open(buf, O_CREAT | O_RDWR, S_IRWXU); |
1 | 2823 |
|
2824 |
if (fd != -1) { |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2825 |
off_t rv = ::lseek(fd, size-2, SEEK_SET); |
1 | 2826 |
if (rv != (off_t)-1) { |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2827 |
if (::write(fd, "", 1) == 1) { |
1 | 2828 |
mmap(base, size, |
2829 |
PROT_READ|PROT_WRITE|PROT_EXEC, |
|
2830 |
MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, fd, 0); |
|
2831 |
} |
|
2832 |
} |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2833 |
::close(fd); |
1 | 2834 |
unlink(buf); |
2835 |
} |
|
2836 |
} |
|
2837 |
||
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2838 |
static bool recoverable_mmap_error(int err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2839 |
// See if the error is one we can let the caller handle. This |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2840 |
// list of errno values comes from JBS-6843484. I can't find a |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2841 |
// Linux man page that documents this specific set of errno |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2842 |
// values so while this list currently matches Solaris, it may |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2843 |
// change as we gain experience with this failure mode. |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2844 |
switch (err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2845 |
case EBADF: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2846 |
case EINVAL: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2847 |
case ENOTSUP: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2848 |
// let the caller deal with these errors |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2849 |
return true; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2850 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2851 |
default: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2852 |
// Any remaining errors on this OS can cause our reserved mapping |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2853 |
// to be lost. That can cause confusion where different data |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2854 |
// structures think they have the same memory mapped. The worst |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2855 |
// scenario is if both the VM and a library think they have the |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2856 |
// same memory mapped. |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2857 |
return false; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2858 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2859 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2860 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2861 |
static void warn_fail_commit_memory(char* addr, size_t size, bool exec, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2862 |
int err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2863 |
warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
2864 |
", %d) failed; error='%s' (errno=%d)", p2i(addr), size, exec, |
37113 | 2865 |
os::strerror(err), err); |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2866 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2867 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2868 |
static void warn_fail_commit_memory(char* addr, size_t size, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2869 |
size_t alignment_hint, bool exec, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2870 |
int err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2871 |
warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
2872 |
", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", p2i(addr), size, |
37113 | 2873 |
alignment_hint, exec, os::strerror(err), err); |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2874 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2875 |
|
1 | 2876 |
// NOTE: Linux kernel does not really reserve the pages for us. |
2877 |
// All it does is to check if there are enough free pages |
|
2878 |
// left at the time of mmap(). This could be a potential |
|
2879 |
// problem. |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2880 |
int os::Linux::commit_memory_impl(char* addr, size_t size, bool exec) { |
2268 | 2881 |
int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
2882 |
uintptr_t res = (uintptr_t) ::mmap(addr, size, prot, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2883 |
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0); |
10494 | 2884 |
if (res != (uintptr_t) MAP_FAILED) { |
2885 |
if (UseNUMAInterleaving) { |
|
2886 |
numa_make_global(addr, size); |
|
2887 |
} |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2888 |
return 0; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2889 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2890 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2891 |
int err = errno; // save errno from mmap() call above |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2892 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2893 |
if (!recoverable_mmap_error(err)) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2894 |
warn_fail_commit_memory(addr, size, exec, err); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2895 |
vm_exit_out_of_memory(size, OOM_MMAP_ERROR, "committing reserved memory."); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2896 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2897 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2898 |
return err; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2899 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2900 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2901 |
bool os::pd_commit_memory(char* addr, size_t size, bool exec) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2902 |
return os::Linux::commit_memory_impl(addr, size, exec) == 0; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2903 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2904 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2905 |
void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2906 |
const char* mesg) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2907 |
assert(mesg != NULL, "mesg must be specified"); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2908 |
int err = os::Linux::commit_memory_impl(addr, size, exec); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2909 |
if (err != 0) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2910 |
// the caller wants all commit errors to exit with the specified mesg: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2911 |
warn_fail_commit_memory(addr, size, exec, err); |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
2912 |
vm_exit_out_of_memory(size, OOM_MMAP_ERROR, "%s", mesg); |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2913 |
} |
1 | 2914 |
} |
2915 |
||
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2916 |
// Define MAP_HUGETLB here so we can build HotSpot on old systems. |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2917 |
#ifndef MAP_HUGETLB |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2918 |
#define MAP_HUGETLB 0x40000 |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2919 |
#endif |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2920 |
|
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2921 |
// Define MADV_HUGEPAGE here so we can build HotSpot on old systems. |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2922 |
#ifndef MADV_HUGEPAGE |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2923 |
#define MADV_HUGEPAGE 14 |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2924 |
#endif |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2925 |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2926 |
int os::Linux::commit_memory_impl(char* addr, size_t size, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2927 |
size_t alignment_hint, bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
2928 |
int err = os::Linux::commit_memory_impl(addr, size, exec); |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2929 |
if (err == 0) { |
10522
23830453e083
7087583: Hotspot fails to allocate heap with mmap(MAP_HUGETLB)
iveresov
parents:
10496
diff
changeset
|
2930 |
realign_memory(addr, size, alignment_hint); |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2931 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2932 |
return err; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2933 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2934 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2935 |
bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2936 |
bool exec) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2937 |
return os::Linux::commit_memory_impl(addr, size, alignment_hint, exec) == 0; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2938 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2939 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2940 |
void os::pd_commit_memory_or_exit(char* addr, size_t size, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2941 |
size_t alignment_hint, bool exec, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2942 |
const char* mesg) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2943 |
assert(mesg != NULL, "mesg must be specified"); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2944 |
int err = os::Linux::commit_memory_impl(addr, size, alignment_hint, exec); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2945 |
if (err != 0) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2946 |
// the caller wants all commit errors to exit with the specified mesg: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2947 |
warn_fail_commit_memory(addr, size, alignment_hint, exec, err); |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
2948 |
vm_exit_out_of_memory(size, OOM_MMAP_ERROR, "%s", mesg); |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2949 |
} |
1 | 2950 |
} |
2951 |
||
13195 | 2952 |
void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
2953 |
if (UseTransparentHugePages && alignment_hint > (size_t)vm_page_size()) { |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2954 |
// We don't check the return value: madvise(MADV_HUGEPAGE) may not |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2955 |
// be supported or the memory may already be backed by huge pages. |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2956 |
::madvise(addr, bytes, MADV_HUGEPAGE); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2957 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2958 |
} |
388 | 2959 |
|
13195 | 2960 |
void os::pd_free_memory(char *addr, size_t bytes, size_t alignment_hint) { |
12116
d81396ae8bf6
7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
iveresov
parents:
11967
diff
changeset
|
2961 |
// This method works by doing an mmap over an existing mmaping and effectively discarding |
d81396ae8bf6
7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
iveresov
parents:
11967
diff
changeset
|
2962 |
// the existing pages. However it won't work for SHM-based large pages that cannot be |
d81396ae8bf6
7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
iveresov
parents:
11967
diff
changeset
|
2963 |
// uncommitted at all. We don't do anything in this case to avoid creating a segment with |
d81396ae8bf6
7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
iveresov
parents:
11967
diff
changeset
|
2964 |
// small pages on top of the SHM segment. This method always works for small pages, so we |
d81396ae8bf6
7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
iveresov
parents:
11967
diff
changeset
|
2965 |
// allow that in any case. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
2966 |
if (alignment_hint <= (size_t)os::vm_page_size() || can_commit_large_page_memory()) { |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2967 |
commit_memory(addr, bytes, alignment_hint, !ExecMem); |
12116
d81396ae8bf6
7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
iveresov
parents:
11967
diff
changeset
|
2968 |
} |
388 | 2969 |
} |
2970 |
||
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2971 |
void os::numa_make_global(char *addr, size_t bytes) { |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2972 |
Linux::numa_interleave_memory(addr, bytes); |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2973 |
} |
388 | 2974 |
|
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2975 |
// Define for numa_set_bind_policy(int). Setting the argument to 0 will set the |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2976 |
// bind policy to MPOL_PREFERRED for the current thread. |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2977 |
#define USE_MPOL_PREFERRED 0 |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2978 |
|
388 | 2979 |
void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2980 |
// To make NUMA and large pages more robust when both enabled, we need to ease |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2981 |
// the requirements on where the memory should be allocated. MPOL_BIND is the |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2982 |
// default policy and it will force memory to be allocated on the specified |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2983 |
// node. Changing this to MPOL_PREFERRED will prefer to allocate the memory on |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2984 |
// the specified node, but will not force it. Using this policy will prevent |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2985 |
// getting SIGBUS when trying to allocate large pages on NUMA nodes with no |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2986 |
// free large pages. |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2987 |
Linux::numa_set_bind_policy(USE_MPOL_PREFERRED); |
388 | 2988 |
Linux::numa_tonode_memory(addr, bytes, lgrp_hint); |
2989 |
} |
|
2990 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2991 |
bool os::numa_topology_changed() { return false; } |
388 | 2992 |
|
2993 |
size_t os::numa_get_groups_num() { |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
2994 |
// Return just the number of nodes in which it's possible to allocate memory |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
2995 |
// (in numa terminology, configured nodes). |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
2996 |
return Linux::numa_num_configured_nodes(); |
388 | 2997 |
} |
2998 |
||
2999 |
int os::numa_get_group_id() { |
|
3000 |
int cpu_id = Linux::sched_getcpu(); |
|
3001 |
if (cpu_id != -1) { |
|
3002 |
int lgrp_id = Linux::get_node_by_cpu(cpu_id); |
|
3003 |
if (lgrp_id != -1) { |
|
3004 |
return lgrp_id; |
|
3005 |
} |
|
1 | 3006 |
} |
3007 |
return 0; |
|
3008 |
} |
|
3009 |
||
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3010 |
int os::Linux::get_existing_num_nodes() { |
51070 | 3011 |
int node; |
3012 |
int highest_node_number = Linux::numa_max_node(); |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3013 |
int num_nodes = 0; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3014 |
|
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3015 |
// Get the total number of nodes in the system including nodes without memory. |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3016 |
for (node = 0; node <= highest_node_number; node++) { |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3017 |
if (is_node_in_existing_nodes(node)) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3018 |
num_nodes++; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3019 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3020 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3021 |
return num_nodes; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3022 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3023 |
|
388 | 3024 |
size_t os::numa_get_leaf_groups(int *ids, size_t size) { |
51070 | 3025 |
int highest_node_number = Linux::numa_max_node(); |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3026 |
size_t i = 0; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3027 |
|
51070 | 3028 |
// Map all node ids in which it is possible to allocate memory. Also nodes are |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3029 |
// not always consecutively available, i.e. available from 0 to the highest |
51225 | 3030 |
// node number. If the nodes have been bound explicitly using numactl membind, |
3031 |
// then allocate memory from those nodes only. |
|
51070 | 3032 |
for (int node = 0; node <= highest_node_number; node++) { |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3033 |
if (Linux::is_node_in_bound_nodes((unsigned int)node)) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3034 |
ids[i++] = node; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3035 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3036 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3037 |
return i; |
388 | 3038 |
} |
3039 |
||
1 | 3040 |
bool os::get_page_info(char *start, page_info* info) { |
3041 |
return false; |
|
3042 |
} |
|
3043 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3044 |
char *os::scan_pages(char *start, char* end, page_info* page_expected, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3045 |
page_info* page_found) { |
1 | 3046 |
return end; |
3047 |
} |
|
3048 |
||
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3049 |
|
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3050 |
int os::Linux::sched_getcpu_syscall(void) { |
33589
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
3051 |
unsigned int cpu = 0; |
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3052 |
int retval = -1; |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3053 |
|
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3054 |
#if defined(IA32) |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3055 |
#ifndef SYS_getcpu |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3056 |
#define SYS_getcpu 318 |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3057 |
#endif |
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3058 |
retval = syscall(SYS_getcpu, &cpu, NULL, NULL); |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3059 |
#elif defined(AMD64) |
10496
b209db6147cf
7082645: Hotspot doesn't compile on old linuxes after 7060836
iveresov
parents:
10494
diff
changeset
|
3060 |
// Unfortunately we have to bring all these macros here from vsyscall.h |
b209db6147cf
7082645: Hotspot doesn't compile on old linuxes after 7060836
iveresov
parents:
10494
diff
changeset
|
3061 |
// to be able to compile on old linuxes. |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3062 |
#define __NR_vgetcpu 2 |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3063 |
#define VSYSCALL_START (-10UL << 20) |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3064 |
#define VSYSCALL_SIZE 1024 |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3065 |
#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) |
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3066 |
typedef long (*vgetcpu_t)(unsigned int *cpu, unsigned int *node, unsigned long *tcache); |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3067 |
vgetcpu_t vgetcpu = (vgetcpu_t)VSYSCALL_ADDR(__NR_vgetcpu); |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3068 |
retval = vgetcpu(&cpu, NULL, NULL); |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3069 |
#endif |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3070 |
|
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3071 |
return (retval == -1) ? retval : cpu; |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3072 |
} |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
3073 |
|
46512
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3074 |
void os::Linux::sched_getcpu_init() { |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3075 |
// sched_getcpu() should be in libc. |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3076 |
set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3077 |
dlsym(RTLD_DEFAULT, "sched_getcpu"))); |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3078 |
|
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3079 |
// If it's not, try a direct syscall. |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3080 |
if (sched_getcpu() == -1) { |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3081 |
set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3082 |
(void*)&sched_getcpu_syscall)); |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3083 |
} |
50178
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
3084 |
|
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
3085 |
if (sched_getcpu() == -1) { |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
3086 |
vm_exit_during_initialization("getcpu(2) system call not supported by kernel"); |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
3087 |
} |
46512
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3088 |
} |
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3089 |
|
8106 | 3090 |
// Something to do with the numa-aware allocator needs these symbols |
3091 |
extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { } |
|
3092 |
extern "C" JNIEXPORT void numa_error(char *where) { } |
|
388 | 3093 |
|
46510
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3094 |
// Handle request to load libnuma symbol version 1.1 (API v1). If it fails |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3095 |
// load symbol from base version instead. |
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3096 |
void* os::Linux::libnuma_dlsym(void* handle, const char *name) { |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3097 |
void *f = dlvsym(handle, name, "libnuma_1.1"); |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3098 |
if (f == NULL) { |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3099 |
f = dlsym(handle, name); |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3100 |
} |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3101 |
return f; |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3102 |
} |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3103 |
|
46510
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3104 |
// Handle request to load libnuma symbol version 1.2 (API v2) only. |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3105 |
// Return NULL if the symbol is not defined in this particular version. |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3106 |
void* os::Linux::libnuma_v2_dlsym(void* handle, const char* name) { |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3107 |
return dlvsym(handle, name, "libnuma_1.2"); |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3108 |
} |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3109 |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3110 |
bool os::Linux::libnuma_init() { |
46512
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
3111 |
if (sched_getcpu() != -1) { // Requires sched_getcpu() support |
975
ad7da100aa6a
6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents:
745
diff
changeset
|
3112 |
void *handle = dlopen("libnuma.so.1", RTLD_LAZY); |
388 | 3113 |
if (handle != NULL) { |
3114 |
set_numa_node_to_cpus(CAST_TO_FN_PTR(numa_node_to_cpus_func_t, |
|
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3115 |
libnuma_dlsym(handle, "numa_node_to_cpus"))); |
388 | 3116 |
set_numa_max_node(CAST_TO_FN_PTR(numa_max_node_func_t, |
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3117 |
libnuma_dlsym(handle, "numa_max_node"))); |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3118 |
set_numa_num_configured_nodes(CAST_TO_FN_PTR(numa_num_configured_nodes_func_t, |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3119 |
libnuma_dlsym(handle, "numa_num_configured_nodes"))); |
388 | 3120 |
set_numa_available(CAST_TO_FN_PTR(numa_available_func_t, |
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3121 |
libnuma_dlsym(handle, "numa_available"))); |
388 | 3122 |
set_numa_tonode_memory(CAST_TO_FN_PTR(numa_tonode_memory_func_t, |
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3123 |
libnuma_dlsym(handle, "numa_tonode_memory"))); |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3124 |
set_numa_interleave_memory(CAST_TO_FN_PTR(numa_interleave_memory_func_t, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3125 |
libnuma_dlsym(handle, "numa_interleave_memory"))); |
46510
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3126 |
set_numa_interleave_memory_v2(CAST_TO_FN_PTR(numa_interleave_memory_v2_func_t, |
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3127 |
libnuma_v2_dlsym(handle, "numa_interleave_memory"))); |
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
3128 |
set_numa_set_bind_policy(CAST_TO_FN_PTR(numa_set_bind_policy_func_t, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3129 |
libnuma_dlsym(handle, "numa_set_bind_policy"))); |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3130 |
set_numa_bitmask_isbitset(CAST_TO_FN_PTR(numa_bitmask_isbitset_func_t, |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3131 |
libnuma_dlsym(handle, "numa_bitmask_isbitset"))); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3132 |
set_numa_distance(CAST_TO_FN_PTR(numa_distance_func_t, |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3133 |
libnuma_dlsym(handle, "numa_distance"))); |
51225 | 3134 |
set_numa_get_membind(CAST_TO_FN_PTR(numa_get_membind_func_t, |
3135 |
libnuma_v2_dlsym(handle, "numa_get_membind"))); |
|
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3136 |
set_numa_get_interleave_mask(CAST_TO_FN_PTR(numa_get_interleave_mask_func_t, |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3137 |
libnuma_v2_dlsym(handle, "numa_get_interleave_mask"))); |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3138 |
|
388 | 3139 |
if (numa_available() != -1) { |
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
3140 |
set_numa_all_nodes((unsigned long*)libnuma_dlsym(handle, "numa_all_nodes")); |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3141 |
set_numa_all_nodes_ptr((struct bitmask **)libnuma_dlsym(handle, "numa_all_nodes_ptr")); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3142 |
set_numa_nodes_ptr((struct bitmask **)libnuma_dlsym(handle, "numa_nodes_ptr")); |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3143 |
set_numa_interleave_bitmask(_numa_get_interleave_mask()); |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3144 |
set_numa_membind_bitmask(_numa_get_membind()); |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3145 |
// Create an index -> node mapping, since nodes are not always consecutive |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3146 |
_nindex_to_node = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(0, true); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3147 |
rebuild_nindex_to_node_map(); |
388 | 3148 |
// Create a cpu -> node mapping |
13195 | 3149 |
_cpu_to_node = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(0, true); |
388 | 3150 |
rebuild_cpu_to_node_map(); |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3151 |
return true; |
388 | 3152 |
} |
3153 |
} |
|
3154 |
} |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3155 |
return false; |
388 | 3156 |
} |
3157 |
||
42905 | 3158 |
size_t os::Linux::default_guard_size(os::ThreadType thr_type) { |
3159 |
// Creating guard page is very expensive. Java thread has HotSpot |
|
3160 |
// guard pages, only enable glibc guard page for non-Java threads. |
|
3161 |
// (Remember: compiler thread is a Java thread, too!) |
|
3162 |
return ((thr_type == java_thread || thr_type == compiler_thread) ? 0 : page_size()); |
|
3163 |
} |
|
3164 |
||
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3165 |
void os::Linux::rebuild_nindex_to_node_map() { |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3166 |
int highest_node_number = Linux::numa_max_node(); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3167 |
|
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3168 |
nindex_to_node()->clear(); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3169 |
for (int node = 0; node <= highest_node_number; node++) { |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3170 |
if (Linux::is_node_in_existing_nodes(node)) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3171 |
nindex_to_node()->append(node); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3172 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3173 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3174 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3175 |
|
388 | 3176 |
// rebuild_cpu_to_node_map() constructs a table mapping cpud id to node id. |
3177 |
// The table is later used in get_node_by_cpu(). |
|
3178 |
void os::Linux::rebuild_cpu_to_node_map() { |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3179 |
const size_t NCPUS = 32768; // Since the buffer size computation is very obscure |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3180 |
// in libnuma (possible values are starting from 16, |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3181 |
// and continuing up with every other power of 2, but less |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3182 |
// than the maximum number of CPUs supported by kernel), and |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3183 |
// is a subject to change (in libnuma version 2 the requirements |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3184 |
// are more reasonable) we'll just hardcode the number they use |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3185 |
// in the library. |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3186 |
const size_t BitsPerCLong = sizeof(long) * CHAR_BIT; |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3187 |
|
40929 | 3188 |
size_t cpu_num = processor_count(); |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3189 |
size_t cpu_map_size = NCPUS / BitsPerCLong; |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3190 |
size_t cpu_map_valid_size = |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3191 |
MIN2((cpu_num + BitsPerCLong - 1) / BitsPerCLong, cpu_map_size); |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3192 |
|
388 | 3193 |
cpu_to_node()->clear(); |
3194 |
cpu_to_node()->at_grow(cpu_num - 1); |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3195 |
|
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3196 |
size_t node_num = get_existing_num_nodes(); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3197 |
|
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3198 |
int distance = 0; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3199 |
int closest_distance = INT_MAX; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3200 |
int closest_node = 0; |
13195 | 3201 |
unsigned long *cpu_map = NEW_C_HEAP_ARRAY(unsigned long, cpu_map_size, mtInternal); |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3202 |
for (size_t i = 0; i < node_num; i++) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3203 |
// Check if node is configured (not a memory-less node). If it is not, find |
51225 | 3204 |
// the closest configured node. Check also if node is bound, i.e. it's allowed |
3205 |
// to allocate memory from the node. If it's not allowed, map cpus in that node |
|
3206 |
// to the closest node from which memory allocation is allowed. |
|
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3207 |
if (!is_node_in_configured_nodes(nindex_to_node()->at(i)) || |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3208 |
!is_node_in_bound_nodes(nindex_to_node()->at(i))) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3209 |
closest_distance = INT_MAX; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3210 |
// Check distance from all remaining nodes in the system. Ignore distance |
51225 | 3211 |
// from itself, from another non-configured node, and from another non-bound |
3212 |
// node. |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3213 |
for (size_t m = 0; m < node_num; m++) { |
51225 | 3214 |
if (m != i && |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3215 |
is_node_in_configured_nodes(nindex_to_node()->at(m)) && |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3216 |
is_node_in_bound_nodes(nindex_to_node()->at(m))) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3217 |
distance = numa_distance(nindex_to_node()->at(i), nindex_to_node()->at(m)); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3218 |
// If a closest node is found, update. There is always at least one |
51225 | 3219 |
// configured and bound node in the system so there is always at least |
3220 |
// one node close. |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3221 |
if (distance != 0 && distance < closest_distance) { |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3222 |
closest_distance = distance; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3223 |
closest_node = nindex_to_node()->at(m); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3224 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3225 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3226 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3227 |
} else { |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3228 |
// Current node is already a configured node. |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3229 |
closest_node = nindex_to_node()->at(i); |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3230 |
} |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3231 |
|
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3232 |
// Get cpus from the original node and map them to the closest node. If node |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3233 |
// is a configured node (not a memory-less node), then original node and |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3234 |
// closest node are the same. |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3235 |
if (numa_node_to_cpus(nindex_to_node()->at(i), cpu_map, cpu_map_size * sizeof(unsigned long)) != -1) { |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3236 |
for (size_t j = 0; j < cpu_map_valid_size; j++) { |
388 | 3237 |
if (cpu_map[j] != 0) { |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3238 |
for (size_t k = 0; k < BitsPerCLong; k++) { |
388 | 3239 |
if (cpu_map[j] & (1UL << k)) { |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3240 |
cpu_to_node()->at_put(j * BitsPerCLong + k, closest_node); |
388 | 3241 |
} |
3242 |
} |
|
3243 |
} |
|
3244 |
} |
|
3245 |
} |
|
3246 |
} |
|
27880
afb974a04396
8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents:
27474
diff
changeset
|
3247 |
FREE_C_HEAP_ARRAY(unsigned long, cpu_map); |
388 | 3248 |
} |
3249 |
||
3250 |
int os::Linux::get_node_by_cpu(int cpu_id) { |
|
3251 |
if (cpu_to_node() != NULL && cpu_id >= 0 && cpu_id < cpu_to_node()->length()) { |
|
3252 |
return cpu_to_node()->at(cpu_id); |
|
3253 |
} |
|
3254 |
return -1; |
|
3255 |
} |
|
3256 |
||
3257 |
GrowableArray<int>* os::Linux::_cpu_to_node; |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3258 |
GrowableArray<int>* os::Linux::_nindex_to_node; |
388 | 3259 |
os::Linux::sched_getcpu_func_t os::Linux::_sched_getcpu; |
3260 |
os::Linux::numa_node_to_cpus_func_t os::Linux::_numa_node_to_cpus; |
|
3261 |
os::Linux::numa_max_node_func_t os::Linux::_numa_max_node; |
|
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3262 |
os::Linux::numa_num_configured_nodes_func_t os::Linux::_numa_num_configured_nodes; |
388 | 3263 |
os::Linux::numa_available_func_t os::Linux::_numa_available; |
3264 |
os::Linux::numa_tonode_memory_func_t os::Linux::_numa_tonode_memory; |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3265 |
os::Linux::numa_interleave_memory_func_t os::Linux::_numa_interleave_memory; |
46510
8cc204b35e39
8181055: PPC64: "mbind: Invalid argument" still seen after 8175813
zgu
parents:
46507
diff
changeset
|
3266 |
os::Linux::numa_interleave_memory_v2_func_t os::Linux::_numa_interleave_memory_v2; |
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
3267 |
os::Linux::numa_set_bind_policy_func_t os::Linux::_numa_set_bind_policy; |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3268 |
os::Linux::numa_bitmask_isbitset_func_t os::Linux::_numa_bitmask_isbitset; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3269 |
os::Linux::numa_distance_func_t os::Linux::_numa_distance; |
51225 | 3270 |
os::Linux::numa_get_membind_func_t os::Linux::_numa_get_membind; |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3271 |
os::Linux::numa_get_interleave_mask_func_t os::Linux::_numa_get_interleave_mask; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3272 |
os::Linux::NumaAllocationPolicy os::Linux::_current_numa_policy; |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
3273 |
unsigned long* os::Linux::_numa_all_nodes; |
46442
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3274 |
struct bitmask* os::Linux::_numa_all_nodes_ptr; |
b833f0dbbb5b
8175813: PPC64: "mbind: Invalid argument" when -XX:+UseNUMA is used
gromero
parents:
46346
diff
changeset
|
3275 |
struct bitmask* os::Linux::_numa_nodes_ptr; |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3276 |
struct bitmask* os::Linux::_numa_interleave_bitmask; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
3277 |
struct bitmask* os::Linux::_numa_membind_bitmask; |
388 | 3278 |
|
13195 | 3279 |
bool os::pd_uncommit_memory(char* addr, size_t size) { |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
3280 |
uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3281 |
MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0); |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
3282 |
return res != (uintptr_t) MAP_FAILED; |
1 | 3283 |
} |
3284 |
||
49349
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3285 |
static address get_stack_commited_bottom(address bottom, size_t size) { |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3286 |
address nbot = bottom; |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3287 |
address ntop = bottom + size; |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3288 |
|
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3289 |
size_t page_sz = os::vm_page_size(); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3290 |
unsigned pages = size / page_sz; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3291 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3292 |
unsigned char vec[1]; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3293 |
unsigned imin = 1, imax = pages + 1, imid; |
22745 | 3294 |
int mincore_return_value = 0; |
3295 |
||
22749
8121b1d5f498
8033931: Several nightly tests failing with assert(imin < imax) failed: Unexpected page size
dcubed
parents:
22745
diff
changeset
|
3296 |
assert(imin <= imax, "Unexpected page size"); |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3297 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3298 |
while (imin < imax) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3299 |
imid = (imax + imin) / 2; |
49349
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3300 |
nbot = ntop - (imid * page_sz); |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3301 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3302 |
// Use a trick with mincore to check whether the page is mapped or not. |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3303 |
// mincore sets vec to 1 if page resides in memory and to 0 if page |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3304 |
// is swapped output but if page we are asking for is unmapped |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3305 |
// it returns -1,ENOMEM |
49349
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3306 |
mincore_return_value = mincore(nbot, page_sz, vec); |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3307 |
|
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3308 |
if (mincore_return_value == -1) { |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3309 |
// Page is not mapped go up |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3310 |
// to find first mapped page |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3311 |
if (errno != EAGAIN) { |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3312 |
assert(errno == ENOMEM, "Unexpected mincore errno"); |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3313 |
imax = imid; |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3314 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3315 |
} else { |
49349
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3316 |
// Page is mapped go down |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3317 |
// to find first not mapped page |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3318 |
imin = imid + 1; |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3319 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3320 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3321 |
|
49349
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3322 |
nbot = nbot + page_sz; |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3323 |
|
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3324 |
// Adjust stack bottom one page up if last checked page is not mapped |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3325 |
if (mincore_return_value == -1) { |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3326 |
nbot = nbot + page_sz; |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3327 |
} |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3328 |
|
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3329 |
return nbot; |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3330 |
} |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3331 |
|
49968 | 3332 |
bool os::committed_in_range(address start, size_t size, address& committed_start, size_t& committed_size) { |
3333 |
int mincore_return_value; |
|
3334 |
const size_t stripe = 1024; // query this many pages each time |
|
50526
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3335 |
unsigned char vec[stripe + 1]; |
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3336 |
// set a guard |
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3337 |
vec[stripe] = 'X'; |
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3338 |
|
49968 | 3339 |
const size_t page_sz = os::vm_page_size(); |
3340 |
size_t pages = size / page_sz; |
|
3341 |
||
3342 |
assert(is_aligned(start, page_sz), "Start address must be page aligned"); |
|
3343 |
assert(is_aligned(size, page_sz), "Size must be page aligned"); |
|
3344 |
||
3345 |
committed_start = NULL; |
|
3346 |
||
3347 |
int loops = (pages + stripe - 1) / stripe; |
|
3348 |
int committed_pages = 0; |
|
3349 |
address loop_base = start; |
|
50526
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3350 |
bool found_range = false; |
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3351 |
|
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3352 |
for (int index = 0; index < loops && !found_range; index ++) { |
49968 | 3353 |
assert(pages > 0, "Nothing to do"); |
3354 |
int pages_to_query = (pages >= stripe) ? stripe : pages; |
|
3355 |
pages -= pages_to_query; |
|
3356 |
||
3357 |
// Get stable read |
|
3358 |
while ((mincore_return_value = mincore(loop_base, pages_to_query * page_sz, vec)) == -1 && errno == EAGAIN); |
|
3359 |
||
3360 |
// During shutdown, some memory goes away without properly notifying NMT, |
|
3361 |
// E.g. ConcurrentGCThread/WatcherThread can exit without deleting thread object. |
|
3362 |
// Bailout and return as not committed for now. |
|
3363 |
if (mincore_return_value == -1 && errno == ENOMEM) { |
|
3364 |
return false; |
|
3365 |
} |
|
3366 |
||
50526
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3367 |
assert(vec[stripe] == 'X', "overflow guard"); |
49968 | 3368 |
assert(mincore_return_value == 0, "Range must be valid"); |
3369 |
// Process this stripe |
|
3370 |
for (int vecIdx = 0; vecIdx < pages_to_query; vecIdx ++) { |
|
3371 |
if ((vec[vecIdx] & 0x01) == 0) { // not committed |
|
3372 |
// End of current contiguous region |
|
3373 |
if (committed_start != NULL) { |
|
50526
3a5aafb12ae6
8204557: NMT: Linux os::committed_in_range() does not break out outer loop when contiguous region is found
zgu
parents:
50504
diff
changeset
|
3374 |
found_range = true; |
49968 | 3375 |
break; |
3376 |
} |
|
3377 |
} else { // committed |
|
3378 |
// Start of region |
|
3379 |
if (committed_start == NULL) { |
|
3380 |
committed_start = loop_base + page_sz * vecIdx; |
|
3381 |
} |
|
3382 |
committed_pages ++; |
|
3383 |
} |
|
3384 |
} |
|
3385 |
||
3386 |
loop_base += pages_to_query * page_sz; |
|
3387 |
} |
|
3388 |
||
3389 |
if (committed_start != NULL) { |
|
3390 |
assert(committed_pages > 0, "Must have committed region"); |
|
3391 |
assert(committed_pages <= int(size / page_sz), "Can not commit more than it has"); |
|
3392 |
assert(committed_start >= start && committed_start < start + size, "Out of range"); |
|
3393 |
committed_size = page_sz * committed_pages; |
|
3394 |
return true; |
|
3395 |
} else { |
|
3396 |
assert(committed_pages == 0, "Should not have committed region"); |
|
3397 |
return false; |
|
3398 |
} |
|
3399 |
} |
|
3400 |
||
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3401 |
|
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3402 |
// Linux uses a growable mapping for the stack, and if the mapping for |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3403 |
// the stack guard pages is not removed when we detach a thread the |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3404 |
// stack cannot grow beyond the pages where the stack guard was |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3405 |
// mapped. If at some point later in the process the stack expands to |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3406 |
// that point, the Linux kernel cannot expand the stack any further |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3407 |
// because the guard pages are in the way, and a segfault occurs. |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3408 |
// |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3409 |
// However, it's essential not to split the stack region by unmapping |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3410 |
// a region (leaving a hole) that's already part of the stack mapping, |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3411 |
// so if the stack mapping has already grown beyond the guard pages at |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3412 |
// the time we create them, we have to truncate the stack mapping. |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3413 |
// So, we need to know the extent of the stack mapping when |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3414 |
// create_stack_guard_pages() is called. |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3415 |
|
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3416 |
// We only need this for stacks that are growable: at the time of |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3417 |
// writing thread stacks don't use growable mappings (i.e. those |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3418 |
// creeated with MAP_GROWSDOWN), and aren't marked "[stack]", so this |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3419 |
// only applies to the main thread. |
9125
3b9a527cd492
7017193: Small memory leak in get_stack_bounds os::create_stack_guard_pages
dsamersoff
parents:
8476
diff
changeset
|
3420 |
|
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3421 |
// If the (growable) stack mapping already extends beyond the point |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3422 |
// where we're going to put our guard pages, truncate the mapping at |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3423 |
// that point by munmap()ping it. This ensures that when we later |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3424 |
// munmap() the guard pages we don't leave a hole in the stack |
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
3425 |
// mapping. This only affects the main/primordial thread |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3426 |
|
13195 | 3427 |
bool os::pd_create_stack_guard_pages(char* addr, size_t size) { |
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
3428 |
if (os::is_primordial_thread()) { |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3429 |
// As we manually grow stack up to bottom inside create_attached_thread(), |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3430 |
// it's likely that os::Linux::initial_thread_stack_bottom is mapped and |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3431 |
// we don't need to do anything special. |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3432 |
// Check it first, before calling heavy function. |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3433 |
uintptr_t stack_extent = (uintptr_t) os::Linux::initial_thread_stack_bottom(); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3434 |
unsigned char vec[1]; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3435 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3436 |
if (mincore((address)stack_extent, os::vm_page_size(), vec) == -1) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3437 |
// Fallback to slow path on all errors, including EAGAIN |
49349
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3438 |
stack_extent = (uintptr_t) get_stack_commited_bottom( |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3439 |
os::Linux::initial_thread_stack_bottom(), |
7194eb9e8f19
8199133: [BACKOUT] NMT: Enhance thread stack tracking
coleenp
parents:
49195
diff
changeset
|
3440 |
(size_t)addr - stack_extent); |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3441 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3442 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3443 |
if (stack_extent < (uintptr_t)addr) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3444 |
::munmap((void*)stack_extent, (uintptr_t)(addr - stack_extent)); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3445 |
} |
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3446 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3447 |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
3448 |
return os::commit_memory(addr, size, !ExecMem); |
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3449 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3450 |
|
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3451 |
// If this is a growable mapping, remove the guard pages entirely by |
6420
a4205fed5b18
6978641: Fix for 6929067 introduces additional overhead in thread creation/termination paths
dholmes
parents:
6176
diff
changeset
|
3452 |
// munmap()ping them. If not, just call uncommit_memory(). This only |
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
3453 |
// affects the main/primordial thread, but guard against future OS changes. |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
3454 |
// It's safe to always unmap guard pages for primordial thread because we |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
3455 |
// always place it right after end of the mapped region. |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3456 |
|
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3457 |
bool os::remove_stack_guard_pages(char* addr, size_t size) { |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3458 |
uintptr_t stack_extent, stack_base; |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3459 |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
3460 |
if (os::is_primordial_thread()) { |
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3461 |
return ::munmap(addr, size) == 0; |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3462 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3463 |
|
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3464 |
return os::uncommit_memory(addr, size); |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3465 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3466 |
|
1 | 3467 |
// If 'fixed' is true, anon_mmap() will attempt to reserve anonymous memory |
3468 |
// at 'requested_addr'. If there are existing memory mappings at the same |
|
3469 |
// location, however, they will be overwritten. If 'fixed' is false, |
|
3470 |
// 'requested_addr' is only treated as a hint, the return value may or |
|
3471 |
// may not start from the requested address. Unlike Linux mmap(), this |
|
3472 |
// function returns NULL to indicate failure. |
|
3473 |
static char* anon_mmap(char* requested_addr, size_t bytes, bool fixed) { |
|
3474 |
char * addr; |
|
3475 |
int flags; |
|
3476 |
||
3477 |
flags = MAP_PRIVATE | MAP_NORESERVE | MAP_ANONYMOUS; |
|
3478 |
if (fixed) { |
|
3479 |
assert((uintptr_t)requested_addr % os::Linux::page_size() == 0, "unaligned address"); |
|
3480 |
flags |= MAP_FIXED; |
|
3481 |
} |
|
3482 |
||
17083 | 3483 |
// Map reserved/uncommitted pages PROT_NONE so we fail early if we |
3484 |
// touch an uncommitted page. Otherwise, the read/write might |
|
3485 |
// succeed if we have enough swap space to back the physical page. |
|
3486 |
addr = (char*)::mmap(requested_addr, bytes, PROT_NONE, |
|
1 | 3487 |
flags, -1, 0); |
3488 |
||
3489 |
return addr == MAP_FAILED ? NULL : addr; |
|
3490 |
} |
|
3491 |
||
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3492 |
// Allocate (using mmap, NO_RESERVE, with small pages) at either a given request address |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3493 |
// (req_addr != NULL) or with a given alignment. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3494 |
// - bytes shall be a multiple of alignment. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3495 |
// - req_addr can be NULL. If not NULL, it must be a multiple of alignment. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3496 |
// - alignment sets the alignment at which memory shall be allocated. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3497 |
// It must be a multiple of allocation granularity. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3498 |
// Returns address of memory or NULL. If req_addr was not NULL, will only return |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3499 |
// req_addr or NULL. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3500 |
static char* anon_mmap_aligned(size_t bytes, size_t alignment, char* req_addr) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3501 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3502 |
size_t extra_size = bytes; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3503 |
if (req_addr == NULL && alignment > 0) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3504 |
extra_size += alignment; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3505 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3506 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3507 |
char* start = (char*) ::mmap(req_addr, extra_size, PROT_NONE, |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3508 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3509 |
-1, 0); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3510 |
if (start == MAP_FAILED) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3511 |
start = NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3512 |
} else { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3513 |
if (req_addr != NULL) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3514 |
if (start != req_addr) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3515 |
::munmap(start, extra_size); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3516 |
start = NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3517 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3518 |
} else { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3519 |
char* const start_aligned = align_up(start, alignment); |
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3520 |
char* const end_aligned = start_aligned + bytes; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3521 |
char* const end = start + extra_size; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3522 |
if (start_aligned > start) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3523 |
::munmap(start, start_aligned - start); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3524 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3525 |
if (end_aligned < end) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3526 |
::munmap(end_aligned, end - end_aligned); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3527 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3528 |
start = start_aligned; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3529 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3530 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3531 |
return start; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3532 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3533 |
|
1 | 3534 |
static int anon_munmap(char * addr, size_t size) { |
3535 |
return ::munmap(addr, size) == 0; |
|
3536 |
} |
|
3537 |
||
13195 | 3538 |
char* os::pd_reserve_memory(size_t bytes, char* requested_addr, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3539 |
size_t alignment_hint) { |
1 | 3540 |
return anon_mmap(requested_addr, bytes, (requested_addr != NULL)); |
3541 |
} |
|
3542 |
||
13195 | 3543 |
bool os::pd_release_memory(char* addr, size_t size) { |
1 | 3544 |
return anon_munmap(addr, size); |
3545 |
} |
|
3546 |
||
3547 |
static bool linux_mprotect(char* addr, size_t size, int prot) { |
|
3548 |
// Linux wants the mprotect address argument to be page aligned. |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3549 |
char* bottom = (char*)align_down((intptr_t)addr, os::Linux::page_size()); |
1 | 3550 |
|
3551 |
// According to SUSv3, mprotect() should only be used with mappings |
|
3552 |
// established by mmap(), and mmap() always maps whole pages. Unaligned |
|
3553 |
// 'addr' likely indicates problem in the VM (e.g. trying to change |
|
3554 |
// protection of malloc'ed or statically allocated memory). Check the |
|
3555 |
// caller if you hit this assert. |
|
3556 |
assert(addr == bottom, "sanity check"); |
|
3557 |
||
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3558 |
size = align_up(pointer_delta(addr, bottom, 1) + size, os::Linux::page_size()); |
55044 | 3559 |
Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with protection modes %x", p2i(bottom), p2i(bottom+size), prot); |
1 | 3560 |
return ::mprotect(bottom, size, prot) == 0; |
3561 |
} |
|
3562 |
||
823
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3563 |
// Set protections specified |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3564 |
bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3565 |
bool is_committed) { |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3566 |
unsigned int p = 0; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3567 |
switch (prot) { |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3568 |
case MEM_PROT_NONE: p = PROT_NONE; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3569 |
case MEM_PROT_READ: p = PROT_READ; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3570 |
case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3571 |
case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3572 |
default: |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3573 |
ShouldNotReachHere(); |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3574 |
} |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3575 |
// is_committed is unused. |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3576 |
return linux_mprotect(addr, bytes, p); |
1 | 3577 |
} |
3578 |
||
3579 |
bool os::guard_memory(char* addr, size_t size) { |
|
3580 |
return linux_mprotect(addr, size, PROT_NONE); |
|
3581 |
} |
|
3582 |
||
3583 |
bool os::unguard_memory(char* addr, size_t size) { |
|
1664
fc9ed50498fb
6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
coleenp
parents:
1615
diff
changeset
|
3584 |
return linux_mprotect(addr, size, PROT_READ|PROT_WRITE); |
1 | 3585 |
} |
3586 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3587 |
bool os::Linux::transparent_huge_pages_sanity_check(bool warn, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3588 |
size_t page_size) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3589 |
bool result = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3590 |
void *p = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3591 |
MAP_ANONYMOUS|MAP_PRIVATE, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3592 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3593 |
if (p != MAP_FAILED) { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3594 |
void *aligned_p = align_up(p, page_size); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3595 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3596 |
result = madvise(aligned_p, page_size, MADV_HUGEPAGE) == 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3597 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3598 |
munmap(p, page_size * 2); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3599 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3600 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3601 |
if (warn && !result) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3602 |
warning("TransparentHugePages is not supported by the operating system."); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3603 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3604 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3605 |
return result; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3606 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3607 |
|
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3608 |
bool os::Linux::hugetlbfs_sanity_check(bool warn, size_t page_size) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3609 |
bool result = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3610 |
void *p = mmap(NULL, page_size, PROT_READ|PROT_WRITE, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3611 |
MAP_ANONYMOUS|MAP_PRIVATE|MAP_HUGETLB, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3612 |
-1, 0); |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3613 |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
3614 |
if (p != MAP_FAILED) { |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3615 |
// We don't know if this really is a huge page or not. |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3616 |
FILE *fp = fopen("/proc/self/maps", "r"); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3617 |
if (fp) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3618 |
while (!feof(fp)) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3619 |
char chars[257]; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3620 |
long x = 0; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3621 |
if (fgets(chars, sizeof(chars), fp)) { |
9625 | 3622 |
if (sscanf(chars, "%lx-%*x", &x) == 1 |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3623 |
&& x == (long)p) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3624 |
if (strstr (chars, "hugepage")) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3625 |
result = true; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3626 |
break; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3627 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3628 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3629 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3630 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3631 |
fclose(fp); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3632 |
} |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3633 |
munmap(p, page_size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3634 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3635 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3636 |
if (warn && !result) { |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3637 |
warning("HugeTLBFS is not supported by the operating system."); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3638 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3639 |
|
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3640 |
return result; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3641 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3642 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3643 |
// From the coredump_filter documentation: |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3644 |
// |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3645 |
// - (bit 0) anonymous private memory |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3646 |
// - (bit 1) anonymous shared memory |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3647 |
// - (bit 2) file-backed private memory |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3648 |
// - (bit 3) file-backed shared memory |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3649 |
// - (bit 4) ELF header pages in file-backed private memory areas (it is |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3650 |
// effective only if the bit 2 is cleared) |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3651 |
// - (bit 5) hugetlb private memory |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3652 |
// - (bit 6) hugetlb shared memory |
48153
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
3653 |
// - (bit 7) dax private memory |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
3654 |
// - (bit 8) dax shared memory |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3655 |
// |
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
3656 |
static void set_coredump_filter(CoredumpFilterBit bit) { |
8119
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3657 |
FILE *f; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3658 |
long cdm; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3659 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3660 |
if ((f = fopen("/proc/self/coredump_filter", "r+")) == NULL) { |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3661 |
return; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3662 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3663 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3664 |
if (fscanf(f, "%lx", &cdm) != 1) { |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3665 |
fclose(f); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3666 |
return; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3667 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3668 |
|
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
3669 |
long saved_cdm = cdm; |
8119
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3670 |
rewind(f); |
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
3671 |
cdm |= bit; |
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
3672 |
|
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
3673 |
if (cdm != saved_cdm) { |
8119
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3674 |
fprintf(f, "%#lx", cdm); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3675 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3676 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3677 |
fclose(f); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3678 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3679 |
|
1 | 3680 |
// Large page support |
3681 |
||
3682 |
static size_t _large_page_size = 0; |
|
3683 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3684 |
size_t os::Linux::find_large_page_size() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3685 |
size_t large_page_size = 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3686 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3687 |
// large_page_size on Linux is used to round up heap size. x86 uses either |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3688 |
// 2M or 4M page, depending on whether PAE (Physical Address Extensions) |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3689 |
// mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. IA64 can use |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3690 |
// page as large as 256M. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3691 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3692 |
// Here we try to figure out page size by parsing /proc/meminfo and looking |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3693 |
// for a line with the following format: |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3694 |
// Hugepagesize: 2048 kB |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3695 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3696 |
// If we can't determine the value (e.g. /proc is not mounted, or the text |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3697 |
// format has been changed), we'll use the largest page size supported by |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3698 |
// the processor. |
1 | 3699 |
|
4013 | 3700 |
#ifndef ZERO |
42062 | 3701 |
large_page_size = |
3702 |
AARCH64_ONLY(2 * M) |
|
3703 |
AMD64_ONLY(2 * M) |
|
3704 |
ARM32_ONLY(2 * M) |
|
3705 |
IA32_ONLY(4 * M) |
|
3706 |
IA64_ONLY(256 * M) |
|
3707 |
PPC_ONLY(4 * M) |
|
3708 |
S390_ONLY(1 * M) |
|
3709 |
SPARC_ONLY(4 * M); |
|
4013 | 3710 |
#endif // ZERO |
1 | 3711 |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3712 |
FILE *fp = fopen("/proc/meminfo", "r"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3713 |
if (fp) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3714 |
while (!feof(fp)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3715 |
int x = 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3716 |
char buf[16]; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3717 |
if (fscanf(fp, "Hugepagesize: %d", &x) == 1) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3718 |
if (x && fgets(buf, sizeof(buf), fp) && strcmp(buf, " kB\n") == 0) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3719 |
large_page_size = x * K; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3720 |
break; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3721 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3722 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3723 |
// skip to next line |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3724 |
for (;;) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3725 |
int ch = fgetc(fp); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3726 |
if (ch == EOF || ch == (int)'\n') break; |
1 | 3727 |
} |
3728 |
} |
|
3729 |
} |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3730 |
fclose(fp); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3731 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3732 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3733 |
if (!FLAG_IS_DEFAULT(LargePageSizeInBytes) && LargePageSizeInBytes != large_page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3734 |
warning("Setting LargePageSizeInBytes has no effect on this OS. Large page size is " |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3735 |
SIZE_FORMAT "%s.", byte_size_in_proper_unit(large_page_size), |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3736 |
proper_unit_for_byte_size(large_page_size)); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3737 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3738 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3739 |
return large_page_size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3740 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3741 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3742 |
size_t os::Linux::setup_large_page_size() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3743 |
_large_page_size = Linux::find_large_page_size(); |
1 | 3744 |
const size_t default_page_size = (size_t)Linux::page_size(); |
3745 |
if (_large_page_size > default_page_size) { |
|
3746 |
_page_sizes[0] = _large_page_size; |
|
3747 |
_page_sizes[1] = default_page_size; |
|
3748 |
_page_sizes[2] = 0; |
|
3749 |
} |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3750 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3751 |
return _large_page_size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3752 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3753 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3754 |
bool os::Linux::setup_large_page_type(size_t page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3755 |
if (FLAG_IS_DEFAULT(UseHugeTLBFS) && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3756 |
FLAG_IS_DEFAULT(UseSHM) && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3757 |
FLAG_IS_DEFAULT(UseTransparentHugePages)) { |
20400
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3758 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3759 |
// The type of large pages has not been specified by the user. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3760 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3761 |
// Try UseHugeTLBFS and then UseSHM. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3762 |
UseHugeTLBFS = UseSHM = true; |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3763 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3764 |
// Don't try UseTransparentHugePages since there are known |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3765 |
// performance issues with it turned on. This might change in the future. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3766 |
UseTransparentHugePages = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3767 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3768 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3769 |
if (UseTransparentHugePages) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3770 |
bool warn_on_failure = !FLAG_IS_DEFAULT(UseTransparentHugePages); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3771 |
if (transparent_huge_pages_sanity_check(warn_on_failure, page_size)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3772 |
UseHugeTLBFS = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3773 |
UseSHM = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3774 |
return true; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3775 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3776 |
UseTransparentHugePages = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3777 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3778 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3779 |
if (UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3780 |
bool warn_on_failure = !FLAG_IS_DEFAULT(UseHugeTLBFS); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3781 |
if (hugetlbfs_sanity_check(warn_on_failure, page_size)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3782 |
UseSHM = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3783 |
return true; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3784 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3785 |
UseHugeTLBFS = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3786 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3787 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3788 |
return UseSHM; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3789 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3790 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3791 |
void os::large_page_init() { |
20400
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3792 |
if (!UseLargePages && |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3793 |
!UseTransparentHugePages && |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3794 |
!UseHugeTLBFS && |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3795 |
!UseSHM) { |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3796 |
// Not using large pages. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3797 |
return; |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3798 |
} |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3799 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3800 |
if (!FLAG_IS_DEFAULT(UseLargePages) && !UseLargePages) { |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3801 |
// The user explicitly turned off large pages. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3802 |
// Ignore the rest of the large pages flags. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3803 |
UseTransparentHugePages = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3804 |
UseHugeTLBFS = false; |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3805 |
UseSHM = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3806 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3807 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3808 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3809 |
size_t large_page_size = Linux::setup_large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3810 |
UseLargePages = Linux::setup_large_page_type(large_page_size); |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3811 |
|
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
3812 |
set_coredump_filter(LARGEPAGES_BIT); |
1 | 3813 |
} |
3814 |
||
3815 |
#ifndef SHM_HUGETLB |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3816 |
#define SHM_HUGETLB 04000 |
1 | 3817 |
#endif |
3818 |
||
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3819 |
#define shm_warning_format(format, ...) \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3820 |
do { \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3821 |
if (UseLargePages && \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3822 |
(!FLAG_IS_DEFAULT(UseLargePages) || \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3823 |
!FLAG_IS_DEFAULT(UseSHM) || \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3824 |
!FLAG_IS_DEFAULT(LargePageSizeInBytes))) { \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3825 |
warning(format, __VA_ARGS__); \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3826 |
} \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3827 |
} while (0) |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
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diff
changeset
|
3828 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3829 |
#define shm_warning(str) shm_warning_format("%s", str) |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3830 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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diff
changeset
|
3831 |
#define shm_warning_with_errno(str) \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
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diff
changeset
|
3832 |
do { \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
38067
diff
changeset
|
3833 |
int err = errno; \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3834 |
shm_warning_format(str " (error = %d)", err); \ |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
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diff
changeset
|
3835 |
} while (0) |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
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diff
changeset
|
3836 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3837 |
static char* shmat_with_alignment(int shmid, size_t bytes, size_t alignment) { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3838 |
assert(is_aligned(bytes, alignment), "Must be divisible by the alignment"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3839 |
|
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3840 |
if (!is_aligned(alignment, SHMLBA)) { |
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3841 |
assert(false, "Code below assumes that alignment is at least SHMLBA aligned"); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
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diff
changeset
|
3842 |
return NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3843 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3844 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3845 |
// To ensure that we get 'alignment' aligned memory from shmat, |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
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diff
changeset
|
3846 |
// we pre-reserve aligned virtual memory and then attach to that. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
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diff
changeset
|
3847 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3848 |
char* pre_reserved_addr = anon_mmap_aligned(bytes, alignment, NULL); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
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diff
changeset
|
3849 |
if (pre_reserved_addr == NULL) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3850 |
// Couldn't pre-reserve aligned memory. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
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diff
changeset
|
3851 |
shm_warning("Failed to pre-reserve aligned memory for shmat."); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
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diff
changeset
|
3852 |
return NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3853 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3854 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3855 |
// SHM_REMAP is needed to allow shmat to map over an existing mapping. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
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parents:
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diff
changeset
|
3856 |
char* addr = (char*)shmat(shmid, pre_reserved_addr, SHM_REMAP); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3857 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
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diff
changeset
|
3858 |
if ((intptr_t)addr == -1) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3859 |
int err = errno; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3860 |
shm_warning_with_errno("Failed to attach shared memory."); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3861 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3862 |
assert(err != EACCES, "Unexpected error"); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3863 |
assert(err != EIDRM, "Unexpected error"); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3864 |
assert(err != EINVAL, "Unexpected error"); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3865 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3866 |
// Since we don't know if the kernel unmapped the pre-reserved memory area |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3867 |
// we can't unmap it, since that would potentially unmap memory that was |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3868 |
// mapped from other threads. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3869 |
return NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3870 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3871 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3872 |
return addr; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3873 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3874 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3875 |
static char* shmat_at_address(int shmid, char* req_addr) { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3876 |
if (!is_aligned(req_addr, SHMLBA)) { |
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3877 |
assert(false, "Requested address needs to be SHMLBA aligned"); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3878 |
return NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3879 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3880 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3881 |
char* addr = (char*)shmat(shmid, req_addr, 0); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3882 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3883 |
if ((intptr_t)addr == -1) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3884 |
shm_warning_with_errno("Failed to attach shared memory."); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3885 |
return NULL; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3886 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3887 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3888 |
return addr; |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3889 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3890 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3891 |
static char* shmat_large_pages(int shmid, size_t bytes, size_t alignment, char* req_addr) { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3892 |
// If a req_addr has been provided, we assume that the caller has already aligned the address. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3893 |
if (req_addr != NULL) { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3894 |
assert(is_aligned(req_addr, os::large_page_size()), "Must be divisible by the large page size"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3895 |
assert(is_aligned(req_addr, alignment), "Must be divisible by given alignment"); |
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3896 |
return shmat_at_address(shmid, req_addr); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3897 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3898 |
|
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3899 |
// Since shmid has been setup with SHM_HUGETLB, shmat will automatically |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3900 |
// return large page size aligned memory addresses when req_addr == NULL. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3901 |
// However, if the alignment is larger than the large page size, we have |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3902 |
// to manually ensure that the memory returned is 'alignment' aligned. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3903 |
if (alignment > os::large_page_size()) { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3904 |
assert(is_aligned(alignment, os::large_page_size()), "Must be divisible by the large page size"); |
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3905 |
return shmat_with_alignment(shmid, bytes, alignment); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3906 |
} else { |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3907 |
return shmat_at_address(shmid, NULL); |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3908 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3909 |
} |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3910 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3911 |
char* os::Linux::reserve_memory_special_shm(size_t bytes, size_t alignment, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3912 |
char* req_addr, bool exec) { |
2268 | 3913 |
// "exec" is passed in but not used. Creating the shared image for |
3914 |
// the code cache doesn't have an SHM_X executable permission to check. |
|
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3915 |
assert(UseLargePages && UseSHM, "only for SHM large pages"); |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3916 |
assert(is_aligned(req_addr, os::large_page_size()), "Unaligned address"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3917 |
assert(is_aligned(req_addr, alignment), "Unaligned address"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3918 |
|
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3919 |
if (!is_aligned(bytes, os::large_page_size())) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3920 |
return NULL; // Fallback to small pages. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3921 |
} |
1 | 3922 |
|
3923 |
// Create a large shared memory region to attach to based on size. |
|
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3924 |
// Currently, size is the total size of the heap. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3925 |
int shmid = shmget(IPC_PRIVATE, bytes, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W); |
1 | 3926 |
if (shmid == -1) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3927 |
// Possible reasons for shmget failure: |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3928 |
// 1. shmmax is too small for Java heap. |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3929 |
// > check shmmax value: cat /proc/sys/kernel/shmmax |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3930 |
// > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3931 |
// 2. not enough large page memory. |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3932 |
// > check available large pages: cat /proc/meminfo |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3933 |
// > increase amount of large pages: |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3934 |
// echo new_value > /proc/sys/vm/nr_hugepages |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3935 |
// Note 1: different Linux may use different name for this property, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3936 |
// e.g. on Redhat AS-3 it is "hugetlb_pool". |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3937 |
// Note 2: it's possible there's enough physical memory available but |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3938 |
// they are so fragmented after a long run that they can't |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3939 |
// coalesce into large pages. Try to reserve large pages when |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3940 |
// the system is still "fresh". |
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3941 |
shm_warning_with_errno("Failed to reserve shared memory."); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3942 |
return NULL; |
1 | 3943 |
} |
3944 |
||
38071
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3945 |
// Attach to the region. |
cdc19fb67395
8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
stefank
parents:
38067
diff
changeset
|
3946 |
char* addr = shmat_large_pages(shmid, bytes, alignment, req_addr); |
1 | 3947 |
|
3948 |
// Remove shmid. If shmat() is successful, the actual shared memory segment |
|
3949 |
// will be deleted when it's detached by shmdt() or when the process |
|
3950 |
// terminates. If shmat() is not successful this will remove the shared |
|
3951 |
// segment immediately. |
|
3952 |
shmctl(shmid, IPC_RMID, NULL); |
|
3953 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3954 |
return addr; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3955 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3956 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3957 |
static void warn_on_large_pages_failure(char* req_addr, size_t bytes, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3958 |
int error) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3959 |
assert(error == ENOMEM, "Only expect to fail if no memory is available"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3960 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3961 |
bool warn_on_failure = UseLargePages && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3962 |
(!FLAG_IS_DEFAULT(UseLargePages) || |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3963 |
!FLAG_IS_DEFAULT(UseHugeTLBFS) || |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3964 |
!FLAG_IS_DEFAULT(LargePageSizeInBytes)); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3965 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3966 |
if (warn_on_failure) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3967 |
char msg[128]; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3968 |
jio_snprintf(msg, sizeof(msg), "Failed to reserve large pages memory req_addr: " |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3969 |
PTR_FORMAT " bytes: " SIZE_FORMAT " (errno = %d).", req_addr, bytes, error); |
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
3970 |
warning("%s", msg); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3971 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3972 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3973 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3974 |
char* os::Linux::reserve_memory_special_huge_tlbfs_only(size_t bytes, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3975 |
char* req_addr, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3976 |
bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3977 |
assert(UseLargePages && UseHugeTLBFS, "only for Huge TLBFS large pages"); |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3978 |
assert(is_aligned(bytes, os::large_page_size()), "Unaligned size"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3979 |
assert(is_aligned(req_addr, os::large_page_size()), "Unaligned address"); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3980 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3981 |
int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3982 |
char* addr = (char*)::mmap(req_addr, bytes, prot, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3983 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3984 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3985 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3986 |
if (addr == MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3987 |
warn_on_large_pages_failure(req_addr, bytes, errno); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3988 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3989 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3990 |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
3991 |
assert(is_aligned(addr, os::large_page_size()), "Must be"); |
15927
f256c20146f4
8008257: NMT: assert(new_rec->is_allocation_record()) failed when running with shared memory option
zgu
parents:
15926
diff
changeset
|
3992 |
|
1 | 3993 |
return addr; |
3994 |
} |
|
3995 |
||
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3996 |
// Reserve memory using mmap(MAP_HUGETLB). |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3997 |
// - bytes shall be a multiple of alignment. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3998 |
// - req_addr can be NULL. If not NULL, it must be a multiple of alignment. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3999 |
// - alignment sets the alignment at which memory shall be allocated. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4000 |
// It must be a multiple of allocation granularity. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4001 |
// Returns address of memory or NULL. If req_addr was not NULL, will only return |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4002 |
// req_addr or NULL. |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4003 |
char* os::Linux::reserve_memory_special_huge_tlbfs_mixed(size_t bytes, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4004 |
size_t alignment, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4005 |
char* req_addr, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4006 |
bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4007 |
size_t large_page_size = os::large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4008 |
assert(bytes >= large_page_size, "Shouldn't allocate large pages for small sizes"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4009 |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4010 |
assert(is_aligned(req_addr, alignment), "Must be"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4011 |
assert(is_aligned(bytes, alignment), "Must be"); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4012 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4013 |
// First reserve - but not commit - the address range in small pages. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4014 |
char* const start = anon_mmap_aligned(bytes, alignment, req_addr); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4015 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4016 |
if (start == NULL) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4017 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4018 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4019 |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4020 |
assert(is_aligned(start, alignment), "Must be"); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4021 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4022 |
char* end = start + bytes; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4023 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4024 |
// Find the regions of the allocated chunk that can be promoted to large pages. |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4025 |
char* lp_start = align_up(start, large_page_size); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4026 |
char* lp_end = align_down(end, large_page_size); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4027 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4028 |
size_t lp_bytes = lp_end - lp_start; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4029 |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4030 |
assert(is_aligned(lp_bytes, large_page_size), "Must be"); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4031 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4032 |
if (lp_bytes == 0) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4033 |
// The mapped region doesn't even span the start and the end of a large page. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4034 |
// Fall back to allocate a non-special area. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4035 |
::munmap(start, end - start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4036 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4037 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4038 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4039 |
int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4040 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4041 |
void* result; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4042 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4043 |
// Commit small-paged leading area. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4044 |
if (start != lp_start) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4045 |
result = ::mmap(start, lp_start - start, prot, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4046 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
4047 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
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18683
diff
changeset
|
4048 |
if (result == MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
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diff
changeset
|
4049 |
::munmap(lp_start, end - lp_start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
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diff
changeset
|
4050 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4051 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4052 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4053 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4054 |
// Commit large-paged area. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4055 |
result = ::mmap(lp_start, lp_bytes, prot, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4056 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_HUGETLB, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4057 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4058 |
if (result == MAP_FAILED) { |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4059 |
warn_on_large_pages_failure(lp_start, lp_bytes, errno); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4060 |
// If the mmap above fails, the large pages region will be unmapped and we |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4061 |
// have regions before and after with small pages. Release these regions. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4062 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4063 |
// | mapped | unmapped | mapped | |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
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diff
changeset
|
4064 |
// ^ ^ ^ ^ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4065 |
// start lp_start lp_end end |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4066 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4067 |
::munmap(start, lp_start - start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4068 |
::munmap(lp_end, end - lp_end); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4069 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4070 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4071 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
4072 |
// Commit small-paged trailing area. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4073 |
if (lp_end != end) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4074 |
result = ::mmap(lp_end, end - lp_end, prot, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4075 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4076 |
-1, 0); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4077 |
if (result == MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4078 |
::munmap(start, lp_end - start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4079 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4080 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4081 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4082 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4083 |
return start; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4084 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4085 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4086 |
char* os::Linux::reserve_memory_special_huge_tlbfs(size_t bytes, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4087 |
size_t alignment, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4088 |
char* req_addr, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4089 |
bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4090 |
assert(UseLargePages && UseHugeTLBFS, "only for Huge TLBFS large pages"); |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4091 |
assert(is_aligned(req_addr, alignment), "Must be"); |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4092 |
assert(is_aligned(alignment, os::vm_allocation_granularity()), "Must be"); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4093 |
assert(is_power_of_2(os::large_page_size()), "Must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4094 |
assert(bytes >= os::large_page_size(), "Shouldn't allocate large pages for small sizes"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4095 |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
4096 |
if (is_aligned(bytes, os::large_page_size()) && alignment <= os::large_page_size()) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4097 |
return reserve_memory_special_huge_tlbfs_only(bytes, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4098 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4099 |
return reserve_memory_special_huge_tlbfs_mixed(bytes, alignment, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4100 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4101 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4102 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4103 |
char* os::reserve_memory_special(size_t bytes, size_t alignment, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4104 |
char* req_addr, bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4105 |
assert(UseLargePages, "only for large pages"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4106 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4107 |
char* addr; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4108 |
if (UseSHM) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4109 |
addr = os::Linux::reserve_memory_special_shm(bytes, alignment, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4110 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4111 |
assert(UseHugeTLBFS, "must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4112 |
addr = os::Linux::reserve_memory_special_huge_tlbfs(bytes, alignment, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4113 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4114 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4115 |
if (addr != NULL) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4116 |
if (UseNUMAInterleaving) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4117 |
numa_make_global(addr, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4118 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4119 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4120 |
// The memory is committed |
25946 | 4121 |
MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, CALLER_PC); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4122 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4123 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4124 |
return addr; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4125 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4126 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4127 |
bool os::Linux::release_memory_special_shm(char* base, size_t bytes) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4128 |
// detaching the SHM segment will also delete it, see reserve_memory_special_shm() |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4129 |
return shmdt(base) == 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4130 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4131 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4132 |
bool os::Linux::release_memory_special_huge_tlbfs(char* base, size_t bytes) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4133 |
return pd_release_memory(base, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4134 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4135 |
|
1 | 4136 |
bool os::release_memory_special(char* base, size_t bytes) { |
25946 | 4137 |
bool res; |
4138 |
if (MemTracker::tracking_level() > NMT_minimal) { |
|
48865
53427ddce0a0
8194934: NMT: Remove MemTracker::get_virtual_memory_xxx_tracker(), create Tracker in place
zgu
parents:
48813
diff
changeset
|
4139 |
Tracker tkr(Tracker::release); |
25946 | 4140 |
res = os::Linux::release_memory_special_impl(base, bytes); |
4141 |
if (res) { |
|
4142 |
tkr.record((address)base, bytes); |
|
4143 |
} |
|
4144 |
||
4145 |
} else { |
|
4146 |
res = os::Linux::release_memory_special_impl(base, bytes); |
|
4147 |
} |
|
4148 |
return res; |
|
4149 |
} |
|
4150 |
||
4151 |
bool os::Linux::release_memory_special_impl(char* base, size_t bytes) { |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4152 |
assert(UseLargePages, "only for large pages"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4153 |
bool res; |
25946 | 4154 |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4155 |
if (UseSHM) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4156 |
res = os::Linux::release_memory_special_shm(base, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4157 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4158 |
assert(UseHugeTLBFS, "must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4159 |
res = os::Linux::release_memory_special_huge_tlbfs(base, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4160 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4161 |
return res; |
1 | 4162 |
} |
4163 |
||
4164 |
size_t os::large_page_size() { |
|
4165 |
return _large_page_size; |
|
4166 |
} |
|
4167 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4168 |
// With SysV SHM the entire memory region must be allocated as shared |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
4169 |
// memory. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4170 |
// HugeTLBFS allows application to commit large page memory on demand. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4171 |
// However, when committing memory with HugeTLBFS fails, the region |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4172 |
// that was supposed to be committed will lose the old reservation |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4173 |
// and allow other threads to steal that memory region. Because of this |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4174 |
// behavior we can't commit HugeTLBFS memory. |
1 | 4175 |
bool os::can_commit_large_page_memory() { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4176 |
return UseTransparentHugePages; |
1 | 4177 |
} |
4178 |
||
252
050143a0dbfb
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
235
diff
changeset
|
4179 |
bool os::can_execute_large_page_memory() { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4180 |
return UseTransparentHugePages || UseHugeTLBFS; |
252
050143a0dbfb
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
235
diff
changeset
|
4181 |
} |
050143a0dbfb
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
235
diff
changeset
|
4182 |
|
48153
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4183 |
char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr, int file_desc) { |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4184 |
assert(file_desc >= 0, "file_desc is not valid"); |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4185 |
char* result = pd_attempt_reserve_memory_at(bytes, requested_addr); |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4186 |
if (result != NULL) { |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4187 |
if (replace_existing_mapping_with_file_mapping(result, bytes, file_desc) == NULL) { |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4188 |
vm_exit_during_initialization(err_msg("Error in mapping Java heap at the given filesystem directory")); |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4189 |
} |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4190 |
} |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4191 |
return result; |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4192 |
} |
cfa2c43e58c2
8190308: Implementation: JEP 316: Heap Allocation on Alternative Memory Devices
kkharbas
parents:
48122
diff
changeset
|
4193 |
|
1 | 4194 |
// Reserve memory at an arbitrary address, only if that area is |
4195 |
// available (and not reserved for something else). |
|
4196 |
||
13195 | 4197 |
char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
1 | 4198 |
// Assert only that the size is a multiple of the page size, since |
4199 |
// that's all that mmap requires, and since that's all we really know |
|
4200 |
// about at this low abstraction level. If we need higher alignment, |
|
4201 |
// we can either pass an alignment to this method or verify alignment |
|
4202 |
// in one of the methods further up the call chain. See bug 5044738. |
|
4203 |
assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); |
|
4204 |
||
4205 |
// Repeatedly allocate blocks until the block is allocated at the |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
4206 |
// right spot. |
1 | 4207 |
|
4208 |
// Linux mmap allows caller to pass an address as hint; give it a try first, |
|
4209 |
// if kernel honors the hint then we can return immediately. |
|
4210 |
char * addr = anon_mmap(requested_addr, bytes, false); |
|
4211 |
if (addr == requested_addr) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4212 |
return requested_addr; |
1 | 4213 |
} |
4214 |
||
4215 |
if (addr != NULL) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4216 |
// mmap() is successful but it fails to reserve at the requested address |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4217 |
anon_munmap(addr, bytes); |
1 | 4218 |
} |
4219 |
||
55325
24c59b1579d7
8224871: os::attempt_reserve_memory_at() tries too hard
eosterlund
parents:
55291
diff
changeset
|
4220 |
return NULL; |
1 | 4221 |
} |
4222 |
||
4223 |
// Sleep forever; naked call to OS-specific sleep; use with CAUTION |
|
4224 |
void os::infinite_sleep() { |
|
4225 |
while (true) { // sleep forever ... |
|
4226 |
::sleep(100); // ... 100 seconds at a time |
|
4227 |
} |
|
4228 |
} |
|
4229 |
||
4230 |
// Used to convert frequent JVM_Yield() to nops |
|
4231 |
bool os::dont_yield() { |
|
4232 |
return DontYieldALot; |
|
4233 |
} |
|
4234 |
||
53077 | 4235 |
// Linux CFS scheduler (since 2.6.23) does not guarantee sched_yield(2) will |
4236 |
// actually give up the CPU. Since skip buddy (v2.6.28): |
|
4237 |
// |
|
4238 |
// * Sets the yielding task as skip buddy for current CPU's run queue. |
|
4239 |
// * Picks next from run queue, if empty, picks a skip buddy (can be the yielding task). |
|
4240 |
// * Clears skip buddies for this run queue (yielding task no longer a skip buddy). |
|
4241 |
// |
|
4242 |
// An alternative is calling os::naked_short_nanosleep with a small number to avoid |
|
4243 |
// getting re-scheduled immediately. |
|
4244 |
// |
|
25477
7dad9f95fd31
8047714: Fix for JDK-6546236 made Solaris os::yield() a no-op
fparain
parents:
25472
diff
changeset
|
4245 |
void os::naked_yield() { |
1 | 4246 |
sched_yield(); |
4247 |
} |
|
4248 |
||
4249 |
//////////////////////////////////////////////////////////////////////////////// |
|
4250 |
// thread priority support |
|
4251 |
||
4252 |
// Note: Normal Linux applications are run with SCHED_OTHER policy. SCHED_OTHER |
|
4253 |
// only supports dynamic priority, static priority must be zero. For real-time |
|
4254 |
// applications, Linux supports SCHED_RR which allows static priority (1-99). |
|
4255 |
// However, for large multi-threaded applications, SCHED_RR is not only slower |
|
4256 |
// than SCHED_OTHER, but also very unstable (my volano tests hang hard 4 out |
|
4257 |
// of 5 runs - Sep 2005). |
|
4258 |
// |
|
4259 |
// The following code actually changes the niceness of kernel-thread/LWP. It |
|
4260 |
// has an assumption that setpriority() only modifies one kernel-thread/LWP, |
|
4261 |
// not the entire user process, and user level threads are 1:1 mapped to kernel |
|
4262 |
// threads. It has always been the case, but could change in the future. For |
|
4263 |
// this reason, the code should not be used as default (ThreadPriorityPolicy=0). |
|
53155
c3d6035c11f3
8215962: Support ThreadPriorityPolicy mode 1 for non-root users on linux/bsd
mbaesken
parents:
53121
diff
changeset
|
4264 |
// It is only used when ThreadPriorityPolicy=1 and may require system level permission |
c3d6035c11f3
8215962: Support ThreadPriorityPolicy mode 1 for non-root users on linux/bsd
mbaesken
parents:
53121
diff
changeset
|
4265 |
// (e.g., root privilege or CAP_SYS_NICE capability). |
1 | 4266 |
|
11601
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4267 |
int os::java_to_os_priority[CriticalPriority + 1] = { |
1 | 4268 |
19, // 0 Entry should never be used |
4269 |
||
4270 |
4, // 1 MinPriority |
|
4271 |
3, // 2 |
|
4272 |
2, // 3 |
|
4273 |
||
4274 |
1, // 4 |
|
4275 |
0, // 5 NormPriority |
|
4276 |
-1, // 6 |
|
4277 |
||
4278 |
-2, // 7 |
|
4279 |
-3, // 8 |
|
4280 |
-4, // 9 NearMaxPriority |
|
4281 |
||
11601
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4282 |
-5, // 10 MaxPriority |
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4283 |
|
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4284 |
-5 // 11 CriticalPriority |
1 | 4285 |
}; |
4286 |
||
4287 |
static int prio_init() { |
|
4288 |
if (ThreadPriorityPolicy == 1) { |
|
4289 |
if (geteuid() != 0) { |
|
4290 |
if (!FLAG_IS_DEFAULT(ThreadPriorityPolicy)) { |
|
53155
c3d6035c11f3
8215962: Support ThreadPriorityPolicy mode 1 for non-root users on linux/bsd
mbaesken
parents:
53121
diff
changeset
|
4291 |
warning("-XX:ThreadPriorityPolicy=1 may require system level permission, " \ |
c3d6035c11f3
8215962: Support ThreadPriorityPolicy mode 1 for non-root users on linux/bsd
mbaesken
parents:
53121
diff
changeset
|
4292 |
"e.g., being the root user. If the necessary permission is not " \ |
c3d6035c11f3
8215962: Support ThreadPriorityPolicy mode 1 for non-root users on linux/bsd
mbaesken
parents:
53121
diff
changeset
|
4293 |
"possessed, changes to priority will be silently ignored."); |
1 | 4294 |
} |
4295 |
} |
|
4296 |
} |
|
11601
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4297 |
if (UseCriticalJavaThreadPriority) { |
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4298 |
os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority]; |
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
4299 |
} |
1 | 4300 |
return 0; |
4301 |
} |
|
4302 |
||
4303 |
OSReturn os::set_native_priority(Thread* thread, int newpri) { |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4304 |
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) return OS_OK; |
1 | 4305 |
|
4306 |
int ret = setpriority(PRIO_PROCESS, thread->osthread()->thread_id(), newpri); |
|
4307 |
return (ret == 0) ? OS_OK : OS_ERR; |
|
4308 |
} |
|
4309 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4310 |
OSReturn os::get_native_priority(const Thread* const thread, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4311 |
int *priority_ptr) { |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4312 |
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) { |
1 | 4313 |
*priority_ptr = java_to_os_priority[NormPriority]; |
4314 |
return OS_OK; |
|
4315 |
} |
|
4316 |
||
4317 |
errno = 0; |
|
4318 |
*priority_ptr = getpriority(PRIO_PROCESS, thread->osthread()->thread_id()); |
|
4319 |
return (*priority_ptr != -1 || errno == 0 ? OS_OK : OS_ERR); |
|
4320 |
} |
|
4321 |
||
4322 |
//////////////////////////////////////////////////////////////////////////////// |
|
4323 |
// suspend/resume support |
|
4324 |
||
47106 | 4325 |
// The low-level signal-based suspend/resume support is a remnant from the |
1 | 4326 |
// old VM-suspension that used to be for java-suspension, safepoints etc, |
47106 | 4327 |
// within hotspot. Currently used by JFR's OSThreadSampler |
4328 |
// |
|
1 | 4329 |
// The remaining code is greatly simplified from the more general suspension |
4330 |
// code that used to be used. |
|
4331 |
// |
|
4332 |
// The protocol is quite simple: |
|
4333 |
// - suspend: |
|
4334 |
// - sends a signal to the target thread |
|
4335 |
// - polls the suspend state of the osthread using a yield loop |
|
4336 |
// - target thread signal handler (SR_handler) sets suspend state |
|
4337 |
// and blocks in sigsuspend until continued |
|
4338 |
// - resume: |
|
4339 |
// - sets target osthread state to continue |
|
4340 |
// - sends signal to end the sigsuspend loop in the SR_handler |
|
4341 |
// |
|
40377
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4342 |
// Note that the SR_lock plays no role in this suspend/resume protocol, |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4343 |
// but is checked for NULL in SR_handler as a thread termination indicator. |
47106 | 4344 |
// The SR_lock is, however, used by JavaThread::java_suspend()/java_resume() APIs. |
4345 |
// |
|
4346 |
// Note that resume_clear_context() and suspend_save_context() are needed |
|
4347 |
// by SR_handler(), so that fetch_frame_from_ucontext() works, |
|
4348 |
// which in part is used by: |
|
4349 |
// - Forte Analyzer: AsyncGetCallTrace() |
|
4350 |
// - StackBanging: get_frame_at_stack_banging_point() |
|
1 | 4351 |
|
4352 |
static void resume_clear_context(OSThread *osthread) { |
|
4353 |
osthread->set_ucontext(NULL); |
|
4354 |
osthread->set_siginfo(NULL); |
|
4355 |
} |
|
4356 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4357 |
static void suspend_save_context(OSThread *osthread, siginfo_t* siginfo, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4358 |
ucontext_t* context) { |
1 | 4359 |
osthread->set_ucontext(context); |
4360 |
osthread->set_siginfo(siginfo); |
|
4361 |
} |
|
4362 |
||
4363 |
// Handler function invoked when a thread's execution is suspended or |
|
4364 |
// resumed. We have to be careful that only async-safe functions are |
|
4365 |
// called here (Note: most pthread functions are not async safe and |
|
4366 |
// should be avoided.) |
|
4367 |
// |
|
4368 |
// Note: sigwait() is a more natural fit than sigsuspend() from an |
|
4369 |
// interface point of view, but sigwait() prevents the signal hander |
|
4370 |
// from being run. libpthread would get very confused by not having |
|
4371 |
// its signal handlers run and prevents sigwait()'s use with the |
|
4372 |
// mutex granting granting signal. |
|
4373 |
// |
|
18025 | 4374 |
// Currently only ever called on the VMThread and JavaThreads (PC sampling) |
1 | 4375 |
// |
4376 |
static void SR_handler(int sig, siginfo_t* siginfo, ucontext_t* context) { |
|
4377 |
// Save and restore errno to avoid confusing native code with EINTR |
|
4378 |
// after sigsuspend. |
|
4379 |
int old_errno = errno; |
|
4380 |
||
37097
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
4381 |
Thread* thread = Thread::current_or_null_safe(); |
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
4382 |
assert(thread != NULL, "Missing current thread in SR_handler"); |
40377
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4383 |
|
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4384 |
// On some systems we have seen signal delivery get "stuck" until the signal |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4385 |
// mask is changed as part of thread termination. Check that the current thread |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4386 |
// has not already terminated (via SR_lock()) - else the following assertion |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4387 |
// will fail because the thread is no longer a JavaThread as the ~JavaThread |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4388 |
// destructor has completed. |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4389 |
|
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4390 |
if (thread->SR_lock() == NULL) { |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4391 |
return; |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4392 |
} |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4393 |
|
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4394 |
assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); |
b77bf599c11b
8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
dholmes
parents:
40010
diff
changeset
|
4395 |
|
1 | 4396 |
OSThread* osthread = thread->osthread(); |
18025 | 4397 |
|
4398 |
os::SuspendResume::State current = osthread->sr.state(); |
|
4399 |
if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { |
|
1 | 4400 |
suspend_save_context(osthread, siginfo, context); |
4401 |
||
18025 | 4402 |
// attempt to switch the state, we assume we had a SUSPEND_REQUEST |
4403 |
os::SuspendResume::State state = osthread->sr.suspended(); |
|
4404 |
if (state == os::SuspendResume::SR_SUSPENDED) { |
|
4405 |
sigset_t suspend_set; // signals for sigsuspend() |
|
37097
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
4406 |
sigemptyset(&suspend_set); |
18025 | 4407 |
// get current set of blocked signals and unblock resume signal |
4408 |
pthread_sigmask(SIG_BLOCK, NULL, &suspend_set); |
|
4409 |
sigdelset(&suspend_set, SR_signum); |
|
4410 |
||
4411 |
sr_semaphore.signal(); |
|
4412 |
// wait here until we are resumed |
|
4413 |
while (1) { |
|
4414 |
sigsuspend(&suspend_set); |
|
4415 |
||
4416 |
os::SuspendResume::State result = osthread->sr.running(); |
|
4417 |
if (result == os::SuspendResume::SR_RUNNING) { |
|
4418 |
sr_semaphore.signal(); |
|
4419 |
break; |
|
4420 |
} |
|
4421 |
} |
|
4422 |
||
4423 |
} else if (state == os::SuspendResume::SR_RUNNING) { |
|
4424 |
// request was cancelled, continue |
|
4425 |
} else { |
|
4426 |
ShouldNotReachHere(); |
|
4427 |
} |
|
1 | 4428 |
|
4429 |
resume_clear_context(osthread); |
|
18025 | 4430 |
} else if (current == os::SuspendResume::SR_RUNNING) { |
4431 |
// request was cancelled, continue |
|
4432 |
} else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { |
|
4433 |
// ignore |
|
1 | 4434 |
} else { |
18025 | 4435 |
// ignore |
1 | 4436 |
} |
4437 |
||
4438 |
errno = old_errno; |
|
4439 |
} |
|
4440 |
||
4441 |
static int SR_initialize() { |
|
4442 |
struct sigaction act; |
|
4443 |
char *s; |
|
34145 | 4444 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4445 |
// Get signal number to use for suspend/resume |
1 | 4446 |
if ((s = ::getenv("_JAVA_SR_SIGNUM")) != 0) { |
4447 |
int sig = ::strtol(s, 0, 10); |
|
34145 | 4448 |
if (sig > MAX2(SIGSEGV, SIGBUS) && // See 4355769. |
4449 |
sig < NSIG) { // Must be legal signal and fit into sigflags[]. |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4450 |
SR_signum = sig; |
34145 | 4451 |
} else { |
4452 |
warning("You set _JAVA_SR_SIGNUM=%d. It must be in range [%d, %d]. Using %d instead.", |
|
4453 |
sig, MAX2(SIGSEGV, SIGBUS)+1, NSIG-1, SR_signum); |
|
1 | 4454 |
} |
4455 |
} |
|
4456 |
||
4457 |
assert(SR_signum > SIGSEGV && SR_signum > SIGBUS, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4458 |
"SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769"); |
1 | 4459 |
|
4460 |
sigemptyset(&SR_sigset); |
|
4461 |
sigaddset(&SR_sigset, SR_signum); |
|
4462 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4463 |
// Set up signal handler for suspend/resume |
1 | 4464 |
act.sa_flags = SA_RESTART|SA_SIGINFO; |
4465 |
act.sa_handler = (void (*)(int)) SR_handler; |
|
4466 |
||
4467 |
// SR_signum is blocked by default. |
|
4468 |
// 4528190 - We also need to block pthread restart signal (32 on all |
|
4469 |
// supported Linux platforms). Note that LinuxThreads need to block |
|
4470 |
// this signal for all threads to work properly. So we don't have |
|
4471 |
// to use hard-coded signal number when setting up the mask. |
|
4472 |
pthread_sigmask(SIG_BLOCK, NULL, &act.sa_mask); |
|
4473 |
||
4474 |
if (sigaction(SR_signum, &act, 0) == -1) { |
|
4475 |
return -1; |
|
4476 |
} |
|
4477 |
||
4478 |
// Save signal flag |
|
4479 |
os::Linux::set_our_sigflags(SR_signum, act.sa_flags); |
|
4480 |
return 0; |
|
4481 |
} |
|
4482 |
||
18025 | 4483 |
static int sr_notify(OSThread* osthread) { |
4484 |
int status = pthread_kill(osthread->pthread_id(), SR_signum); |
|
4485 |
assert_status(status == 0, status, "pthread_kill"); |
|
4486 |
return status; |
|
4487 |
} |
|
4488 |
||
4489 |
// "Randomly" selected value for how long we want to spin |
|
4490 |
// before bailing out on suspending a thread, also how often |
|
4491 |
// we send a signal to a thread we want to resume |
|
4492 |
static const int RANDOMLY_LARGE_INTEGER = 1000000; |
|
4493 |
static const int RANDOMLY_LARGE_INTEGER2 = 100; |
|
1 | 4494 |
|
4495 |
// returns true on success and false on error - really an error is fatal |
|
4496 |
// but this seems the normal response to library errors |
|
4497 |
static bool do_suspend(OSThread* osthread) { |
|
18025 | 4498 |
assert(osthread->sr.is_running(), "thread should be running"); |
4499 |
assert(!sr_semaphore.trywait(), "semaphore has invalid state"); |
|
4500 |
||
1 | 4501 |
// mark as suspended and send signal |
18025 | 4502 |
if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { |
4503 |
// failed to switch, state wasn't running? |
|
4504 |
ShouldNotReachHere(); |
|
4505 |
return false; |
|
4506 |
} |
|
4507 |
||
4508 |
if (sr_notify(osthread) != 0) { |
|
4509 |
ShouldNotReachHere(); |
|
4510 |
} |
|
4511 |
||
4512 |
// managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED |
|
4513 |
while (true) { |
|
53461
08d6edeb3145
8194860: Cleanup Semaphore timed-wait time calculations
dholmes
parents:
53362
diff
changeset
|
4514 |
if (sr_semaphore.timedwait(2)) { |
18025 | 4515 |
break; |
4516 |
} else { |
|
4517 |
// timeout |
|
4518 |
os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); |
|
4519 |
if (cancelled == os::SuspendResume::SR_RUNNING) { |
|
4520 |
return false; |
|
4521 |
} else if (cancelled == os::SuspendResume::SR_SUSPENDED) { |
|
4522 |
// make sure that we consume the signal on the semaphore as well |
|
4523 |
sr_semaphore.wait(); |
|
4524 |
break; |
|
4525 |
} else { |
|
4526 |
ShouldNotReachHere(); |
|
4527 |
return false; |
|
4528 |
} |
|
1 | 4529 |
} |
18025 | 4530 |
} |
4531 |
||
4532 |
guarantee(osthread->sr.is_suspended(), "Must be suspended"); |
|
4533 |
return true; |
|
1 | 4534 |
} |
4535 |
||
4536 |
static void do_resume(OSThread* osthread) { |
|
4537 |
assert(osthread->sr.is_suspended(), "thread should be suspended"); |
|
18025 | 4538 |
assert(!sr_semaphore.trywait(), "invalid semaphore state"); |
4539 |
||
4540 |
if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { |
|
4541 |
// failed to switch to WAKEUP_REQUEST |
|
4542 |
ShouldNotReachHere(); |
|
4543 |
return; |
|
4544 |
} |
|
4545 |
||
4546 |
while (true) { |
|
4547 |
if (sr_notify(osthread) == 0) { |
|
53461
08d6edeb3145
8194860: Cleanup Semaphore timed-wait time calculations
dholmes
parents:
53362
diff
changeset
|
4548 |
if (sr_semaphore.timedwait(2)) { |
18025 | 4549 |
if (osthread->sr.is_running()) { |
4550 |
return; |
|
4551 |
} |
|
4552 |
} |
|
4553 |
} else { |
|
4554 |
ShouldNotReachHere(); |
|
1 | 4555 |
} |
4556 |
} |
|
18025 | 4557 |
|
4558 |
guarantee(osthread->sr.is_running(), "Must be running!"); |
|
1 | 4559 |
} |
4560 |
||
4561 |
/////////////////////////////////////////////////////////////////////////////////// |
|
4562 |
// signal handling (except suspend/resume) |
|
4563 |
||
4564 |
// This routine may be used by user applications as a "hook" to catch signals. |
|
4565 |
// The user-defined signal handler must pass unrecognized signals to this |
|
4566 |
// routine, and if it returns true (non-zero), then the signal handler must |
|
4567 |
// return immediately. If the flag "abort_if_unrecognized" is true, then this |
|
4568 |
// routine will never retun false (zero), but instead will execute a VM panic |
|
4569 |
// routine kill the process. |
|
4570 |
// |
|
4571 |
// If this routine returns false, it is OK to call it again. This allows |
|
4572 |
// the user-defined signal handler to perform checks either before or after |
|
4573 |
// the VM performs its own checks. Naturally, the user code would be making |
|
4574 |
// a serious error if it tried to handle an exception (such as a null check |
|
4575 |
// or breakpoint) that the VM was generating for its own correct operation. |
|
4576 |
// |
|
4577 |
// This routine may recognize any of the following kinds of signals: |
|
4578 |
// SIGBUS, SIGSEGV, SIGILL, SIGFPE, SIGQUIT, SIGPIPE, SIGXFSZ, SIGUSR1. |
|
4579 |
// It should be consulted by handlers for any of those signals. |
|
4580 |
// |
|
4581 |
// The caller of this routine must pass in the three arguments supplied |
|
4582 |
// to the function referred to in the "sa_sigaction" (not the "sa_handler") |
|
4583 |
// field of the structure passed to sigaction(). This routine assumes that |
|
4584 |
// the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. |
|
4585 |
// |
|
4586 |
// Note that the VM will print warnings if it detects conflicting signal |
|
4587 |
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". |
|
4588 |
// |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4589 |
extern "C" JNIEXPORT int JVM_handle_linux_signal(int signo, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4590 |
siginfo_t* siginfo, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4591 |
void* ucontext, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4592 |
int abort_if_unrecognized); |
1 | 4593 |
|
50184
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
4594 |
static void signalHandler(int sig, siginfo_t* info, void* uc) { |
1 | 4595 |
assert(info != NULL && uc != NULL, "it must be old kernel"); |
15743
f708934a12e7
6749267: Signal handler should save/restore errno
hseigel
parents:
15475
diff
changeset
|
4596 |
int orig_errno = errno; // Preserve errno value over signal handler. |
1 | 4597 |
JVM_handle_linux_signal(sig, info, uc, true); |
15743
f708934a12e7
6749267: Signal handler should save/restore errno
hseigel
parents:
15475
diff
changeset
|
4598 |
errno = orig_errno; |
1 | 4599 |
} |
4600 |
||
4601 |
||
4602 |
// This boolean allows users to forward their own non-matching signals |
|
4603 |
// to JVM_handle_linux_signal, harmlessly. |
|
4604 |
bool os::Linux::signal_handlers_are_installed = false; |
|
4605 |
||
4606 |
// For signal-chaining |
|
4607 |
bool os::Linux::libjsig_is_loaded = false; |
|
4608 |
typedef struct sigaction *(*get_signal_t)(int); |
|
4609 |
get_signal_t os::Linux::get_signal_action = NULL; |
|
4610 |
||
4611 |
struct sigaction* os::Linux::get_chained_signal_action(int sig) { |
|
4612 |
struct sigaction *actp = NULL; |
|
4613 |
||
4614 |
if (libjsig_is_loaded) { |
|
4615 |
// Retrieve the old signal handler from libjsig |
|
4616 |
actp = (*get_signal_action)(sig); |
|
4617 |
} |
|
4618 |
if (actp == NULL) { |
|
4619 |
// Retrieve the preinstalled signal handler from jvm |
|
54090
3086f9259e97
8170639: [Linux] jsig is limited to a maximum of 64 signals
aoqi
parents:
53968
diff
changeset
|
4620 |
actp = os::Posix::get_preinstalled_handler(sig); |
1 | 4621 |
} |
4622 |
||
4623 |
return actp; |
|
4624 |
} |
|
4625 |
||
4626 |
static bool call_chained_handler(struct sigaction *actp, int sig, |
|
4627 |
siginfo_t *siginfo, void *context) { |
|
4628 |
// Call the old signal handler |
|
4629 |
if (actp->sa_handler == SIG_DFL) { |
|
4630 |
// It's more reasonable to let jvm treat it as an unexpected exception |
|
4631 |
// instead of taking the default action. |
|
4632 |
return false; |
|
4633 |
} else if (actp->sa_handler != SIG_IGN) { |
|
4634 |
if ((actp->sa_flags & SA_NODEFER) == 0) { |
|
4635 |
// automaticlly block the signal |
|
4636 |
sigaddset(&(actp->sa_mask), sig); |
|
4637 |
} |
|
4638 |
||
33589
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
4639 |
sa_handler_t hand = NULL; |
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
4640 |
sa_sigaction_t sa = NULL; |
1 | 4641 |
bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; |
4642 |
// retrieve the chained handler |
|
4643 |
if (siginfo_flag_set) { |
|
4644 |
sa = actp->sa_sigaction; |
|
4645 |
} else { |
|
4646 |
hand = actp->sa_handler; |
|
4647 |
} |
|
4648 |
||
4649 |
if ((actp->sa_flags & SA_RESETHAND) != 0) { |
|
4650 |
actp->sa_handler = SIG_DFL; |
|
4651 |
} |
|
4652 |
||
4653 |
// try to honor the signal mask |
|
4654 |
sigset_t oset; |
|
37097
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
4655 |
sigemptyset(&oset); |
1 | 4656 |
pthread_sigmask(SIG_SETMASK, &(actp->sa_mask), &oset); |
4657 |
||
4658 |
// call into the chained handler |
|
4659 |
if (siginfo_flag_set) { |
|
4660 |
(*sa)(sig, siginfo, context); |
|
4661 |
} else { |
|
4662 |
(*hand)(sig); |
|
4663 |
} |
|
4664 |
||
4665 |
// restore the signal mask |
|
37097
a4e966af48f6
8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
dholmes
parents:
37092
diff
changeset
|
4666 |
pthread_sigmask(SIG_SETMASK, &oset, NULL); |
1 | 4667 |
} |
4668 |
// Tell jvm's signal handler the signal is taken care of. |
|
4669 |
return true; |
|
4670 |
} |
|
4671 |
||
4672 |
bool os::Linux::chained_handler(int sig, siginfo_t* siginfo, void* context) { |
|
4673 |
bool chained = false; |
|
4674 |
// signal-chaining |
|
4675 |
if (UseSignalChaining) { |
|
4676 |
struct sigaction *actp = get_chained_signal_action(sig); |
|
4677 |
if (actp != NULL) { |
|
4678 |
chained = call_chained_handler(actp, sig, siginfo, context); |
|
4679 |
} |
|
4680 |
} |
|
4681 |
return chained; |
|
4682 |
} |
|
4683 |
||
4684 |
// for diagnostic |
|
34145 | 4685 |
int sigflags[NSIG]; |
1 | 4686 |
|
4687 |
int os::Linux::get_our_sigflags(int sig) { |
|
34145 | 4688 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
1 | 4689 |
return sigflags[sig]; |
4690 |
} |
|
4691 |
||
4692 |
void os::Linux::set_our_sigflags(int sig, int flags) { |
|
34145 | 4693 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
4694 |
if (sig > 0 && sig < NSIG) { |
|
33794 | 4695 |
sigflags[sig] = flags; |
4696 |
} |
|
1 | 4697 |
} |
4698 |
||
4699 |
void os::Linux::set_signal_handler(int sig, bool set_installed) { |
|
4700 |
// Check for overwrite. |
|
4701 |
struct sigaction oldAct; |
|
4702 |
sigaction(sig, (struct sigaction*)NULL, &oldAct); |
|
4703 |
||
4704 |
void* oldhand = oldAct.sa_sigaction |
|
4705 |
? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
|
4706 |
: CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
|
4707 |
if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && |
|
4708 |
oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && |
|
4709 |
oldhand != CAST_FROM_FN_PTR(void*, (sa_sigaction_t)signalHandler)) { |
|
4710 |
if (AllowUserSignalHandlers || !set_installed) { |
|
4711 |
// Do not overwrite; user takes responsibility to forward to us. |
|
4712 |
return; |
|
4713 |
} else if (UseSignalChaining) { |
|
4714 |
// save the old handler in jvm |
|
54090
3086f9259e97
8170639: [Linux] jsig is limited to a maximum of 64 signals
aoqi
parents:
53968
diff
changeset
|
4715 |
os::Posix::save_preinstalled_handler(sig, oldAct); |
1 | 4716 |
// libjsig also interposes the sigaction() call below and saves the |
4717 |
// old sigaction on it own. |
|
4718 |
} else { |
|
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4719 |
fatal("Encountered unexpected pre-existing sigaction handler " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4720 |
"%#lx for signal %d.", (long)oldhand, sig); |
1 | 4721 |
} |
4722 |
} |
|
4723 |
||
4724 |
struct sigaction sigAct; |
|
4725 |
sigfillset(&(sigAct.sa_mask)); |
|
4726 |
sigAct.sa_handler = SIG_DFL; |
|
4727 |
if (!set_installed) { |
|
4728 |
sigAct.sa_flags = SA_SIGINFO|SA_RESTART; |
|
4729 |
} else { |
|
4730 |
sigAct.sa_sigaction = signalHandler; |
|
4731 |
sigAct.sa_flags = SA_SIGINFO|SA_RESTART; |
|
4732 |
} |
|
4733 |
// Save flags, which are set by ours |
|
34145 | 4734 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
1 | 4735 |
sigflags[sig] = sigAct.sa_flags; |
4736 |
||
4737 |
int ret = sigaction(sig, &sigAct, &oldAct); |
|
4738 |
assert(ret == 0, "check"); |
|
4739 |
||
4740 |
void* oldhand2 = oldAct.sa_sigaction |
|
4741 |
? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
|
4742 |
: CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
|
4743 |
assert(oldhand2 == oldhand, "no concurrent signal handler installation"); |
|
4744 |
} |
|
4745 |
||
4746 |
// install signal handlers for signals that HotSpot needs to |
|
4747 |
// handle in order to support Java-level exception handling. |
|
4748 |
||
4749 |
void os::Linux::install_signal_handlers() { |
|
4750 |
if (!signal_handlers_are_installed) { |
|
4751 |
signal_handlers_are_installed = true; |
|
4752 |
||
4753 |
// signal-chaining |
|
4754 |
typedef void (*signal_setting_t)(); |
|
4755 |
signal_setting_t begin_signal_setting = NULL; |
|
4756 |
signal_setting_t end_signal_setting = NULL; |
|
4757 |
begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4758 |
dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); |
1 | 4759 |
if (begin_signal_setting != NULL) { |
4760 |
end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4761 |
dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); |
1 | 4762 |
get_signal_action = CAST_TO_FN_PTR(get_signal_t, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4763 |
dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); |
1 | 4764 |
libjsig_is_loaded = true; |
4765 |
assert(UseSignalChaining, "should enable signal-chaining"); |
|
4766 |
} |
|
4767 |
if (libjsig_is_loaded) { |
|
4768 |
// Tell libjsig jvm is setting signal handlers |
|
4769 |
(*begin_signal_setting)(); |
|
4770 |
} |
|
4771 |
||
4772 |
set_signal_handler(SIGSEGV, true); |
|
4773 |
set_signal_handler(SIGPIPE, true); |
|
4774 |
set_signal_handler(SIGBUS, true); |
|
4775 |
set_signal_handler(SIGILL, true); |
|
4776 |
set_signal_handler(SIGFPE, true); |
|
22848
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4777 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4778 |
set_signal_handler(SIGTRAP, true); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4779 |
#endif |
1 | 4780 |
set_signal_handler(SIGXFSZ, true); |
4781 |
||
4782 |
if (libjsig_is_loaded) { |
|
4783 |
// Tell libjsig jvm finishes setting signal handlers |
|
4784 |
(*end_signal_setting)(); |
|
4785 |
} |
|
4786 |
||
4787 |
// We don't activate signal checker if libjsig is in place, we trust ourselves |
|
10561
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4788 |
// and if UserSignalHandler is installed all bets are off. |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4789 |
// Log that signal checking is off only if -verbose:jni is specified. |
1 | 4790 |
if (CheckJNICalls) { |
4791 |
if (libjsig_is_loaded) { |
|
10561
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4792 |
if (PrintJNIResolving) { |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4793 |
tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4794 |
} |
1 | 4795 |
check_signals = false; |
4796 |
} |
|
4797 |
if (AllowUserSignalHandlers) { |
|
10561
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4798 |
if (PrintJNIResolving) { |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4799 |
tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4800 |
} |
1 | 4801 |
check_signals = false; |
4802 |
} |
|
4803 |
} |
|
4804 |
} |
|
4805 |
} |
|
4806 |
||
4807 |
// This is the fastest way to get thread cpu time on Linux. |
|
4808 |
// Returns cpu time (user+sys) for any thread, not only for current. |
|
4809 |
// POSIX compliant clocks are implemented in the kernels 2.6.16+. |
|
4810 |
// It might work on 2.6.10+ with a special kernel/glibc patch. |
|
4811 |
// For reference, please, see IEEE Std 1003.1-2004: |
|
4812 |
// http://www.unix.org/single_unix_specification |
|
4813 |
||
4814 |
jlong os::Linux::fast_thread_cpu_time(clockid_t clockid) { |
|
4815 |
struct timespec tp; |
|
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
4816 |
int rc = os::Posix::clock_gettime(clockid, &tp); |
1 | 4817 |
assert(rc == 0, "clock_gettime is expected to return 0 code"); |
4818 |
||
11251
e29da6b5622b
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
johnc
parents:
11161
diff
changeset
|
4819 |
return (tp.tv_sec * NANOSECS_PER_SEC) + tp.tv_nsec; |
1 | 4820 |
} |
4821 |
||
4822 |
///// |
|
4823 |
// glibc on Linux platform uses non-documented flag |
|
4824 |
// to indicate, that some special sort of signal |
|
4825 |
// trampoline is used. |
|
4826 |
// We will never set this flag, and we should |
|
4827 |
// ignore this flag in our diagnostic |
|
4828 |
#ifdef SIGNIFICANT_SIGNAL_MASK |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4829 |
#undef SIGNIFICANT_SIGNAL_MASK |
1 | 4830 |
#endif |
4831 |
#define SIGNIFICANT_SIGNAL_MASK (~0x04000000) |
|
4832 |
||
4833 |
static const char* get_signal_handler_name(address handler, |
|
4834 |
char* buf, int buflen) { |
|
33589
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
4835 |
int offset = 0; |
1 | 4836 |
bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); |
4837 |
if (found) { |
|
4838 |
// skip directory names |
|
4839 |
const char *p1, *p2; |
|
4840 |
p1 = buf; |
|
4841 |
size_t len = strlen(os::file_separator()); |
|
4842 |
while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; |
|
4843 |
jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); |
|
4844 |
} else { |
|
4845 |
jio_snprintf(buf, buflen, PTR_FORMAT, handler); |
|
4846 |
} |
|
4847 |
return buf; |
|
4848 |
} |
|
4849 |
||
4850 |
static void print_signal_handler(outputStream* st, int sig, |
|
4851 |
char* buf, size_t buflen) { |
|
4852 |
struct sigaction sa; |
|
4853 |
||
4854 |
sigaction(sig, NULL, &sa); |
|
4855 |
||
4856 |
// See comment for SIGNIFICANT_SIGNAL_MASK define |
|
4857 |
sa.sa_flags &= SIGNIFICANT_SIGNAL_MASK; |
|
4858 |
||
4859 |
st->print("%s: ", os::exception_name(sig, buf, buflen)); |
|
4860 |
||
4861 |
address handler = (sa.sa_flags & SA_SIGINFO) |
|
4862 |
? CAST_FROM_FN_PTR(address, sa.sa_sigaction) |
|
4863 |
: CAST_FROM_FN_PTR(address, sa.sa_handler); |
|
4864 |
||
4865 |
if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { |
|
4866 |
st->print("SIG_DFL"); |
|
4867 |
} else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { |
|
4868 |
st->print("SIG_IGN"); |
|
4869 |
} else { |
|
4870 |
st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); |
|
4871 |
} |
|
4872 |
||
22826 | 4873 |
st->print(", sa_mask[0]="); |
4874 |
os::Posix::print_signal_set_short(st, &sa.sa_mask); |
|
1 | 4875 |
|
4876 |
address rh = VMError::get_resetted_sighandler(sig); |
|
4877 |
// May be, handler was resetted by VMError? |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4878 |
if (rh != NULL) { |
1 | 4879 |
handler = rh; |
4880 |
sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK; |
|
4881 |
} |
|
4882 |
||
22826 | 4883 |
st->print(", sa_flags="); |
4884 |
os::Posix::print_sa_flags(st, sa.sa_flags); |
|
1 | 4885 |
|
4886 |
// Check: is it our handler? |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4887 |
if (handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) || |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4888 |
handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) { |
1 | 4889 |
// It is our signal handler |
4890 |
// check for flags, reset system-used one! |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4891 |
if ((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) { |
1 | 4892 |
st->print( |
4893 |
", flags was changed from " PTR32_FORMAT ", consider using jsig library", |
|
4894 |
os::Linux::get_our_sigflags(sig)); |
|
4895 |
} |
|
4896 |
} |
|
4897 |
st->cr(); |
|
4898 |
} |
|
4899 |
||
4900 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4901 |
#define DO_SIGNAL_CHECK(sig) \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4902 |
do { \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4903 |
if (!sigismember(&check_signal_done, sig)) { \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4904 |
os::Linux::check_signal_handler(sig); \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4905 |
} \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4906 |
} while (0) |
1 | 4907 |
|
4908 |
// This method is a periodic task to check for misbehaving JNI applications |
|
4909 |
// under CheckJNI, we can add any periodic checks here |
|
4910 |
||
4911 |
void os::run_periodic_checks() { |
|
4912 |
if (check_signals == false) return; |
|
4913 |
||
4914 |
// SEGV and BUS if overridden could potentially prevent |
|
4915 |
// generation of hs*.log in the event of a crash, debugging |
|
4916 |
// such a case can be very challenging, so we absolutely |
|
4917 |
// check the following for a good measure: |
|
4918 |
DO_SIGNAL_CHECK(SIGSEGV); |
|
4919 |
DO_SIGNAL_CHECK(SIGILL); |
|
4920 |
DO_SIGNAL_CHECK(SIGFPE); |
|
4921 |
DO_SIGNAL_CHECK(SIGBUS); |
|
4922 |
DO_SIGNAL_CHECK(SIGPIPE); |
|
4923 |
DO_SIGNAL_CHECK(SIGXFSZ); |
|
22848
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4924 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4925 |
DO_SIGNAL_CHECK(SIGTRAP); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4926 |
#endif |
1 | 4927 |
|
4928 |
// ReduceSignalUsage allows the user to override these handlers |
|
47765
b7c7428eaab9
8189610: Reconcile jvm.h and all jvm_md.h between java.base and hotspot
coleenp
parents:
47524
diff
changeset
|
4929 |
// see comments at the very top and jvm_md.h |
1 | 4930 |
if (!ReduceSignalUsage) { |
4931 |
DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); |
|
4932 |
DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); |
|
4933 |
DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); |
|
4934 |
DO_SIGNAL_CHECK(BREAK_SIGNAL); |
|
4935 |
} |
|
4936 |
||
4937 |
DO_SIGNAL_CHECK(SR_signum); |
|
4938 |
} |
|
4939 |
||
4940 |
typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); |
|
4941 |
||
4942 |
static os_sigaction_t os_sigaction = NULL; |
|
4943 |
||
4944 |
void os::Linux::check_signal_handler(int sig) { |
|
4945 |
char buf[O_BUFLEN]; |
|
4946 |
address jvmHandler = NULL; |
|
4947 |
||
4948 |
||
4949 |
struct sigaction act; |
|
4950 |
if (os_sigaction == NULL) { |
|
4951 |
// only trust the default sigaction, in case it has been interposed |
|
4952 |
os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); |
|
4953 |
if (os_sigaction == NULL) return; |
|
4954 |
} |
|
4955 |
||
4956 |
os_sigaction(sig, (struct sigaction*)NULL, &act); |
|
4957 |
||
4958 |
||
4959 |
act.sa_flags &= SIGNIFICANT_SIGNAL_MASK; |
|
4960 |
||
4961 |
address thisHandler = (act.sa_flags & SA_SIGINFO) |
|
4962 |
? CAST_FROM_FN_PTR(address, act.sa_sigaction) |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4963 |
: CAST_FROM_FN_PTR(address, act.sa_handler); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4964 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4965 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4966 |
switch (sig) { |
1 | 4967 |
case SIGSEGV: |
4968 |
case SIGBUS: |
|
4969 |
case SIGFPE: |
|
4970 |
case SIGPIPE: |
|
4971 |
case SIGILL: |
|
4972 |
case SIGXFSZ: |
|
4973 |
jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler); |
|
4974 |
break; |
|
4975 |
||
4976 |
case SHUTDOWN1_SIGNAL: |
|
4977 |
case SHUTDOWN2_SIGNAL: |
|
4978 |
case SHUTDOWN3_SIGNAL: |
|
4979 |
case BREAK_SIGNAL: |
|
4980 |
jvmHandler = (address)user_handler(); |
|
4981 |
break; |
|
4982 |
||
4983 |
default: |
|
4984 |
if (sig == SR_signum) { |
|
4985 |
jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler); |
|
4986 |
} else { |
|
4987 |
return; |
|
4988 |
} |
|
4989 |
break; |
|
4990 |
} |
|
4991 |
||
4992 |
if (thisHandler != jvmHandler) { |
|
4993 |
tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); |
|
4994 |
tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); |
|
4995 |
tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); |
|
4996 |
// No need to check this sig any longer |
|
4997 |
sigaddset(&check_signal_done, sig); |
|
23444
b5457261694b
6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
minqi
parents:
23185
diff
changeset
|
4998 |
// Running under non-interactive shell, SHUTDOWN2_SIGNAL will be reassigned SIG_IGN |
b5457261694b
6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
minqi
parents:
23185
diff
changeset
|
4999 |
if (sig == SHUTDOWN2_SIGNAL && !isatty(fileno(stdin))) { |
b5457261694b
6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
minqi
parents:
23185
diff
changeset
|
5000 |
tty->print_cr("Running in non-interactive shell, %s handler is replaced by shell", |
b5457261694b
6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
minqi
parents:
23185
diff
changeset
|
5001 |
exception_name(sig, buf, O_BUFLEN)); |
b5457261694b
6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
minqi
parents:
23185
diff
changeset
|
5002 |
} |
1 | 5003 |
} else if(os::Linux::get_our_sigflags(sig) != 0 && (int)act.sa_flags != os::Linux::get_our_sigflags(sig)) { |
5004 |
tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); |
|
34667 | 5005 |
tty->print("expected:"); |
5006 |
os::Posix::print_sa_flags(tty, os::Linux::get_our_sigflags(sig)); |
|
5007 |
tty->cr(); |
|
5008 |
tty->print(" found:"); |
|
5009 |
os::Posix::print_sa_flags(tty, act.sa_flags); |
|
5010 |
tty->cr(); |
|
1 | 5011 |
// No need to check this sig any longer |
5012 |
sigaddset(&check_signal_done, sig); |
|
5013 |
} |
|
5014 |
||
5015 |
// Dump all the signal |
|
5016 |
if (sigismember(&check_signal_done, sig)) { |
|
5017 |
print_signal_handlers(tty, buf, O_BUFLEN); |
|
5018 |
} |
|
5019 |
} |
|
5020 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5021 |
extern void report_error(char* file_name, int line_no, char* title, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5022 |
char* format, ...); |
1 | 5023 |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
5024 |
// this is called _before_ most of the global arguments have been parsed |
1 | 5025 |
void os::init(void) { |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5026 |
char dummy; // used to get a guess on initial stack address |
1 | 5027 |
|
5028 |
clock_tics_per_sec = sysconf(_SC_CLK_TCK); |
|
5029 |
||
5030 |
init_random(1234567); |
|
5031 |
||
5032 |
Linux::set_page_size(sysconf(_SC_PAGESIZE)); |
|
5033 |
if (Linux::page_size() == -1) { |
|
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
5034 |
fatal("os_linux.cpp: os::init: sysconf failed (%s)", |
37113 | 5035 |
os::strerror(errno)); |
1 | 5036 |
} |
5037 |
init_page_sizes((size_t) Linux::page_size()); |
|
5038 |
||
5039 |
Linux::initialize_system_info(); |
|
5040 |
||
54470
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5041 |
os::Linux::CPUPerfTicks pticks; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5042 |
bool res = os::Linux::get_tick_information(&pticks, -1); |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5043 |
|
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5044 |
if (res && pticks.has_steal_ticks) { |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5045 |
has_initial_tick_info = true; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5046 |
initial_total_ticks = pticks.total; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5047 |
initial_steal_ticks = pticks.steal; |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5048 |
} |
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
54280
diff
changeset
|
5049 |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
5050 |
// _main_thread points to the thread that created/loaded the JVM. |
1 | 5051 |
Linux::_main_thread = pthread_self(); |
5052 |
||
27164 | 5053 |
// retrieve entry point for pthread_setname_np |
5054 |
Linux::_pthread_setname_np = |
|
5055 |
(int(*)(pthread_t, const char*))dlsym(RTLD_DEFAULT, "pthread_setname_np"); |
|
5056 |
||
46507
7db40fa6eff7
8174231: Factor out and share PlatformEvent and Parker code for POSIX systems
dholmes
parents:
46442
diff
changeset
|
5057 |
os::Posix::init(); |
51989
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5058 |
|
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5059 |
initial_time_count = javaTimeNanos(); |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5060 |
|
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5061 |
// Always warn if no monotonic clock available |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5062 |
if (!os::Posix::supports_monotonic_clock()) { |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5063 |
warning("No monotonic clock was available - timed services may " \ |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5064 |
"be adversely affected if the time-of-day clock changes"); |
7ac0ac1e57b6
8211175: Remove temporary clock initialization duplication
dholmes
parents:
51942
diff
changeset
|
5065 |
} |
1 | 5066 |
} |
5067 |
||
5068 |
// To install functions for atexit system call |
|
5069 |
extern "C" { |
|
5070 |
static void perfMemory_exit_helper() { |
|
5071 |
perfMemory_exit(); |
|
5072 |
} |
|
5073 |
} |
|
5074 |
||
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5075 |
void os::pd_init_container_support() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5076 |
OSContainer::init(); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5077 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5078 |
|
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5079 |
void os::Linux::numa_init() { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5080 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5081 |
// Java can be invoked as |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5082 |
// 1. Without numactl and heap will be allocated/configured on all nodes as |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5083 |
// per the system policy. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5084 |
// 2. With numactl --interleave: |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5085 |
// Use numa_get_interleave_mask(v2) API to get nodes bitmask. The same |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5086 |
// API for membind case bitmask is reset. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5087 |
// Interleave is only hint and Kernel can fallback to other nodes if |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5088 |
// no memory is available on the target nodes. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5089 |
// 3. With numactl --membind: |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5090 |
// Use numa_get_membind(v2) API to get nodes bitmask. The same API for |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5091 |
// interleave case returns bitmask of all nodes. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5092 |
// numa_all_nodes_ptr holds bitmask of all nodes. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5093 |
// numa_get_interleave_mask(v2) and numa_get_membind(v2) APIs returns correct |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5094 |
// bitmask when externally configured to run on all or fewer nodes. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5095 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5096 |
if (!Linux::libnuma_init()) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5097 |
UseNUMA = false; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5098 |
} else { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5099 |
if ((Linux::numa_max_node() < 1) || Linux::is_bound_to_single_node()) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5100 |
// If there's only one node (they start from 0) or if the process |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5101 |
// is bound explicitly to a single node using membind, disable NUMA. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5102 |
UseNUMA = false; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5103 |
} else { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5104 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5105 |
LogTarget(Info,os) log; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5106 |
LogStream ls(log); |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5107 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5108 |
Linux::set_configured_numa_policy(Linux::identify_numa_policy()); |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5109 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5110 |
struct bitmask* bmp = Linux::_numa_membind_bitmask; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5111 |
const char* numa_mode = "membind"; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5112 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5113 |
if (Linux::is_running_in_interleave_mode()) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5114 |
bmp = Linux::_numa_interleave_bitmask; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5115 |
numa_mode = "interleave"; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5116 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5117 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5118 |
ls.print("UseNUMA is enabled and invoked in '%s' mode." |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5119 |
" Heap will be configured using NUMA memory nodes:", numa_mode); |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5120 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5121 |
for (int node = 0; node <= Linux::numa_max_node(); node++) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5122 |
if (Linux::_numa_bitmask_isbitset(bmp, node)) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5123 |
ls.print(" %d", node); |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5124 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5125 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5126 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5127 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5128 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5129 |
if (UseParallelGC && UseNUMA && UseLargePages && !can_commit_large_page_memory()) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5130 |
// With SHM and HugeTLBFS large pages we cannot uncommit a page, so there's no way |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5131 |
// we can make the adaptive lgrp chunk resizing work. If the user specified both |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5132 |
// UseNUMA and UseLargePages (or UseSHM/UseHugeTLBFS) on the command line - warn |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5133 |
// and disable adaptive resizing. |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5134 |
if (UseAdaptiveSizePolicy || UseAdaptiveNUMAChunkSizing) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5135 |
warning("UseNUMA is not fully compatible with SHM/HugeTLBFS large pages, " |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5136 |
"disabling adaptive resizing (-XX:-UseAdaptiveSizePolicy -XX:-UseAdaptiveNUMAChunkSizing)"); |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5137 |
UseAdaptiveSizePolicy = false; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5138 |
UseAdaptiveNUMAChunkSizing = false; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5139 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5140 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5141 |
|
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5142 |
if (!UseNUMA && ForceNUMA) { |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5143 |
UseNUMA = true; |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5144 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5145 |
} |
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5146 |
|
1 | 5147 |
// this is called _after_ the global arguments have been parsed |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5148 |
jint os::init_2(void) { |
46507
7db40fa6eff7
8174231: Factor out and share PlatformEvent and Parker code for POSIX systems
dholmes
parents:
46442
diff
changeset
|
5149 |
|
52581
d402a406bbc3
8213723: More Monitor/mutex initialization management
dholmes
parents:
52396
diff
changeset
|
5150 |
// This could be set after os::Posix::init() but all platforms |
d402a406bbc3
8213723: More Monitor/mutex initialization management
dholmes
parents:
52396
diff
changeset
|
5151 |
// have to set it the same so we have to mirror Solaris. |
d402a406bbc3
8213723: More Monitor/mutex initialization management
dholmes
parents:
52396
diff
changeset
|
5152 |
DEBUG_ONLY(os::set_mutex_init_done();) |
d402a406bbc3
8213723: More Monitor/mutex initialization management
dholmes
parents:
52396
diff
changeset
|
5153 |
|
46507
7db40fa6eff7
8174231: Factor out and share PlatformEvent and Parker code for POSIX systems
dholmes
parents:
46442
diff
changeset
|
5154 |
os::Posix::init_2(); |
7db40fa6eff7
8174231: Factor out and share PlatformEvent and Parker code for POSIX systems
dholmes
parents:
46442
diff
changeset
|
5155 |
|
1 | 5156 |
Linux::fast_thread_clock_init(); |
5157 |
||
5158 |
// initialize suspend/resume support - must do this before signal_sets_init() |
|
5159 |
if (SR_initialize() != 0) { |
|
5160 |
perror("SR_initialize failed"); |
|
5161 |
return JNI_ERR; |
|
5162 |
} |
|
5163 |
||
5164 |
Linux::signal_sets_init(); |
|
5165 |
Linux::install_signal_handlers(); |
|
50184
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
5166 |
// Initialize data for jdk.internal.misc.Signal |
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
5167 |
if (!ReduceSignalUsage) { |
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
5168 |
jdk_misc_signal_init(); |
1a4101ebec92
8202014: Possible to receive signal before signal semaphore created
coleenp
parents:
50178
diff
changeset
|
5169 |
} |
1 | 5170 |
|
55624
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
5171 |
if (AdjustStackSizeForTLS) { |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
5172 |
get_minstack_init(); |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
5173 |
} |
cb90a20eb99a
8225035: Thread stack size issue caused by large TLS size
jiangli
parents:
55556
diff
changeset
|
5174 |
|
41070
496463b4e206
8140520: segfault on solaris-amd64 with "-XX:VMThreadStackSize=1" option
rdurbin
parents:
40929
diff
changeset
|
5175 |
// Check and sets minimum stack sizes against command line options |
496463b4e206
8140520: segfault on solaris-amd64 with "-XX:VMThreadStackSize=1" option
rdurbin
parents:
40929
diff
changeset
|
5176 |
if (Posix::set_minimum_stack_sizes() == JNI_ERR) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5177 |
return JNI_ERR; |
1 | 5178 |
} |
49660
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
5179 |
|
54654
7acebe4d65e2
8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
sgehwolf
parents:
54623
diff
changeset
|
5180 |
#if defined(IA32) |
7acebe4d65e2
8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
sgehwolf
parents:
54623
diff
changeset
|
5181 |
// Need to ensure we've determined the process's initial stack to |
7acebe4d65e2
8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
sgehwolf
parents:
54623
diff
changeset
|
5182 |
// perform the workaround |
7acebe4d65e2
8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
sgehwolf
parents:
54623
diff
changeset
|
5183 |
Linux::capture_initial_stack(JavaThread::stack_size_at_create()); |
7acebe4d65e2
8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
sgehwolf
parents:
54623
diff
changeset
|
5184 |
workaround_expand_exec_shield_cs_limit(); |
7acebe4d65e2
8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
sgehwolf
parents:
54623
diff
changeset
|
5185 |
#else |
49660
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
5186 |
suppress_primordial_thread_resolution = Arguments::created_by_java_launcher(); |
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
5187 |
if (!suppress_primordial_thread_resolution) { |
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
5188 |
Linux::capture_initial_stack(JavaThread::stack_size_at_create()); |
89a886b7a9cf
8199717: Avoid calculating primordial thread stack bounds on VM startup
redestad
parents:
49636
diff
changeset
|
5189 |
} |
20279
7ffa08fef52a
8023956: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)
dsimms
parents:
20005
diff
changeset
|
5190 |
#endif |
7ffa08fef52a
8023956: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)
dsimms
parents:
20005
diff
changeset
|
5191 |
|
1 | 5192 |
Linux::libpthread_init(); |
46512
1ba5728eda0d
8181319: Make os::Linux::sched_getcpu() available even when UseNUMA is false
pliden
parents:
46510
diff
changeset
|
5193 |
Linux::sched_getcpu_init(); |
37430
fd743dadef12
8151939: VM_Version_init() print buffer is too small
coleenp
parents:
37155
diff
changeset
|
5194 |
log_info(os)("HotSpot is running with %s, %s", |
fd743dadef12
8151939: VM_Version_init() print buffer is too small
coleenp
parents:
37155
diff
changeset
|
5195 |
Linux::glibc_version(), Linux::libpthread_version()); |
1 | 5196 |
|
388 | 5197 |
if (UseNUMA) { |
53362
ef09fd205ef0
8213827: NUMA heap allocation does not respect process membind/interleave settings
tschatzl
parents:
53266
diff
changeset
|
5198 |
Linux::numa_init(); |
388 | 5199 |
} |
5200 |
||
1 | 5201 |
if (MaxFDLimit) { |
5202 |
// set the number of file descriptors to max. print out error |
|
5203 |
// if getrlimit/setrlimit fails but continue regardless. |
|
5204 |
struct rlimit nbr_files; |
|
5205 |
int status = getrlimit(RLIMIT_NOFILE, &nbr_files); |
|
5206 |
if (status != 0) { |
|
37430
fd743dadef12
8151939: VM_Version_init() print buffer is too small
coleenp
parents:
37155
diff
changeset
|
5207 |
log_info(os)("os::init_2 getrlimit failed: %s", os::strerror(errno)); |
1 | 5208 |
} else { |
5209 |
nbr_files.rlim_cur = nbr_files.rlim_max; |
|
5210 |
status = setrlimit(RLIMIT_NOFILE, &nbr_files); |
|
5211 |
if (status != 0) { |
|
37430
fd743dadef12
8151939: VM_Version_init() print buffer is too small
coleenp
parents:
37155
diff
changeset
|
5212 |
log_info(os)("os::init_2 setrlimit failed: %s", os::strerror(errno)); |
1 | 5213 |
} |
5214 |
} |
|
5215 |
} |
|
5216 |
||
5217 |
// at-exit methods are called in the reverse order of their registration. |
|
5218 |
// atexit functions are called on return from main or as a result of a |
|
5219 |
// call to exit(3C). There can be only 32 of these functions registered |
|
5220 |
// and atexit() does not set errno. |
|
5221 |
||
5222 |
if (PerfAllowAtExitRegistration) { |
|
5223 |
// only register atexit functions if PerfAllowAtExitRegistration is set. |
|
5224 |
// atexit functions can be delayed until process exit time, which |
|
5225 |
// can be problematic for embedded VM situations. Embedded VMs should |
|
5226 |
// call DestroyJavaVM() to assure that VM resources are released. |
|
5227 |
||
5228 |
// note: perfMemory_exit_helper atexit function may be removed in |
|
5229 |
// the future if the appropriate cleanup code can be added to the |
|
5230 |
// VM_Exit VMOperation's doit method. |
|
5231 |
if (atexit(perfMemory_exit_helper) != 0) { |
|
22807 | 5232 |
warning("os::init_2 atexit(perfMemory_exit_helper) failed"); |
1 | 5233 |
} |
5234 |
} |
|
5235 |
||
5236 |
// initialize thread priority policy |
|
5237 |
prio_init(); |
|
5238 |
||
53116
bb03098c4dde
8211425: Allocation of old generation of java heap on alternate memory devices - G1 GC
sangheki
parents:
53012
diff
changeset
|
5239 |
if (!FLAG_IS_DEFAULT(AllocateHeapAt) || !FLAG_IS_DEFAULT(AllocateOldGenAt)) { |
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
5240 |
set_coredump_filter(DAX_SHARED_BIT); |
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
5241 |
} |
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
5242 |
|
53870
92263386a883
8219414: SA: jhsdb jsnap throws UnmappedAddressException with core generated by gcore
ysuenaga
parents:
53568
diff
changeset
|
5243 |
if (DumpPrivateMappingsInCore) { |
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
5244 |
set_coredump_filter(FILE_BACKED_PVT_BIT); |
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
5245 |
} |
53870
92263386a883
8219414: SA: jhsdb jsnap throws UnmappedAddressException with core generated by gcore
ysuenaga
parents:
53568
diff
changeset
|
5246 |
|
92263386a883
8219414: SA: jhsdb jsnap throws UnmappedAddressException with core generated by gcore
ysuenaga
parents:
53568
diff
changeset
|
5247 |
if (DumpSharedMappingsInCore) { |
92263386a883
8219414: SA: jhsdb jsnap throws UnmappedAddressException with core generated by gcore
ysuenaga
parents:
53568
diff
changeset
|
5248 |
set_coredump_filter(FILE_BACKED_SHARED_BIT); |
92263386a883
8219414: SA: jhsdb jsnap throws UnmappedAddressException with core generated by gcore
ysuenaga
parents:
53568
diff
changeset
|
5249 |
} |
52960
a6182c464b31
8200613: SA: jstack throws UnmappedAddressException with a CDS core file
jgeorge
parents:
52892
diff
changeset
|
5250 |
|
1 | 5251 |
return JNI_OK; |
5252 |
} |
|
5253 |
||
5254 |
// Mark the polling page as unreadable |
|
5255 |
void os::make_polling_page_unreadable(void) { |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5256 |
if (!guard_memory((char*)_polling_page, Linux::page_size())) { |
1 | 5257 |
fatal("Could not disable polling page"); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5258 |
} |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5259 |
} |
1 | 5260 |
|
5261 |
// Mark the polling page as readable |
|
5262 |
void os::make_polling_page_readable(void) { |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5263 |
if (!linux_mprotect((char *)_polling_page, Linux::page_size(), PROT_READ)) { |
1 | 5264 |
fatal("Could not enable polling page"); |
823
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
5265 |
} |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5266 |
} |
1 | 5267 |
|
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5268 |
// older glibc versions don't have this macro (which expands to |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5269 |
// an optimized bit-counting function) so we have to roll our own |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5270 |
#ifndef CPU_COUNT |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5271 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5272 |
static int _cpu_count(const cpu_set_t* cpus) { |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5273 |
int count = 0; |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5274 |
// only look up to the number of configured processors |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5275 |
for (int i = 0; i < os::processor_count(); i++) { |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5276 |
if (CPU_ISSET(i, cpus)) { |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5277 |
count++; |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5278 |
} |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5279 |
} |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5280 |
return count; |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5281 |
} |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5282 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5283 |
#define CPU_COUNT(cpus) _cpu_count(cpus) |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5284 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5285 |
#endif // CPU_COUNT |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5286 |
|
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5287 |
// Get the current number of available processors for this process. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5288 |
// This value can change at any time during a process's lifetime. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5289 |
// sched_getaffinity gives an accurate answer as it accounts for cpusets. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5290 |
// If it appears there may be more than 1024 processors then we do a |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5291 |
// dynamic check - see 6515172 for details. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5292 |
// If anything goes wrong we fallback to returning the number of online |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5293 |
// processors - which can be greater than the number available to the process. |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5294 |
int os::Linux::active_processor_count() { |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5295 |
cpu_set_t cpus; // can represent at most 1024 (CPU_SETSIZE) processors |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5296 |
cpu_set_t* cpus_p = &cpus; |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5297 |
int cpus_size = sizeof(cpu_set_t); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5298 |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5299 |
int configured_cpus = os::processor_count(); // upper bound on available cpus |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5300 |
int cpu_count = 0; |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5301 |
|
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5302 |
// old build platforms may not support dynamic cpu sets |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5303 |
#ifdef CPU_ALLOC |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5304 |
|
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5305 |
// To enable easy testing of the dynamic path on different platforms we |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5306 |
// introduce a diagnostic flag: UseCpuAllocPath |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5307 |
if (configured_cpus >= CPU_SETSIZE || UseCpuAllocPath) { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5308 |
// kernel may use a mask bigger than cpu_set_t |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5309 |
log_trace(os)("active_processor_count: using dynamic path %s" |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5310 |
"- configured processors: %d", |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5311 |
UseCpuAllocPath ? "(forced) " : "", |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5312 |
configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5313 |
cpus_p = CPU_ALLOC(configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5314 |
if (cpus_p != NULL) { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5315 |
cpus_size = CPU_ALLOC_SIZE(configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5316 |
// zero it just to be safe |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5317 |
CPU_ZERO_S(cpus_size, cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5318 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5319 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5320 |
// failed to allocate so fallback to online cpus |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5321 |
int online_cpus = ::sysconf(_SC_NPROCESSORS_ONLN); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5322 |
log_trace(os)("active_processor_count: " |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5323 |
"CPU_ALLOC failed (%s) - using " |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5324 |
"online processor count: %d", |
37113 | 5325 |
os::strerror(errno), online_cpus); |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5326 |
return online_cpus; |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5327 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5328 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5329 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5330 |
log_trace(os)("active_processor_count: using static path - configured processors: %d", |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5331 |
configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5332 |
} |
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5333 |
#else // CPU_ALLOC |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5334 |
// these stubs won't be executed |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5335 |
#define CPU_COUNT_S(size, cpus) -1 |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5336 |
#define CPU_FREE(cpus) |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5337 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5338 |
log_trace(os)("active_processor_count: only static path available - configured processors: %d", |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5339 |
configured_cpus); |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5340 |
#endif // CPU_ALLOC |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5341 |
|
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5342 |
// pid 0 means the current thread - which we have to assume represents the process |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5343 |
if (sched_getaffinity(0, cpus_size, cpus_p) == 0) { |
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5344 |
if (cpus_p != &cpus) { // can only be true when CPU_ALLOC used |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5345 |
cpu_count = CPU_COUNT_S(cpus_size, cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5346 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5347 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5348 |
cpu_count = CPU_COUNT(cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5349 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5350 |
log_trace(os)("active_processor_count: sched_getaffinity processor count: %d", cpu_count); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5351 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5352 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5353 |
cpu_count = ::sysconf(_SC_NPROCESSORS_ONLN); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5354 |
warning("sched_getaffinity failed (%s)- using online processor count (%d) " |
37113 | 5355 |
"which may exceed available processors", os::strerror(errno), cpu_count); |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5356 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5357 |
|
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
5358 |
if (cpus_p != &cpus) { // can only be true when CPU_ALLOC used |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5359 |
CPU_FREE(cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5360 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5361 |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5362 |
assert(cpu_count > 0 && cpu_count <= os::processor_count(), "sanity check"); |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
5363 |
return cpu_count; |
1 | 5364 |
} |
5365 |
||
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5366 |
// Determine the active processor count from one of |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5367 |
// three different sources: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5368 |
// |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5369 |
// 1. User option -XX:ActiveProcessorCount |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5370 |
// 2. kernel os calls (sched_getaffinity or sysconf(_SC_NPROCESSORS_ONLN) |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5371 |
// 3. extracted from cgroup cpu subsystem (shares and quotas) |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5372 |
// |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5373 |
// Option 1, if specified, will always override. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5374 |
// If the cgroup subsystem is active and configured, we |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5375 |
// will return the min of the cgroup and option 2 results. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5376 |
// This is required since tools, such as numactl, that |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5377 |
// alter cpu affinity do not update cgroup subsystem |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5378 |
// cpuset configuration files. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5379 |
int os::active_processor_count() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5380 |
// User has overridden the number of active processors |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5381 |
if (ActiveProcessorCount > 0) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5382 |
log_trace(os)("active_processor_count: " |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5383 |
"active processor count set by user : %d", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5384 |
ActiveProcessorCount); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5385 |
return ActiveProcessorCount; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5386 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5387 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5388 |
int active_cpus; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5389 |
if (OSContainer::is_containerized()) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5390 |
active_cpus = OSContainer::active_processor_count(); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5391 |
log_trace(os)("active_processor_count: determined by OSContainer: %d", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5392 |
active_cpus); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5393 |
} else { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5394 |
active_cpus = os::Linux::active_processor_count(); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5395 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5396 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5397 |
return active_cpus; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5398 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
47881
diff
changeset
|
5399 |
|
50178
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
5400 |
uint os::processor_id() { |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
5401 |
const int id = Linux::sched_getcpu(); |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
5402 |
assert(id >= 0 && id < _processor_count, "Invalid processor id"); |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
5403 |
return (uint)id; |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
5404 |
} |
7b0291382aff
8203227: Introduce os::processor_id() for Linux and Solaris
pliden
parents:
50177
diff
changeset
|
5405 |
|
10739 | 5406 |
void os::set_native_thread_name(const char *name) { |
27164 | 5407 |
if (Linux::_pthread_setname_np) { |
5408 |
char buf [16]; // according to glibc manpage, 16 chars incl. '/0' |
|
5409 |
snprintf(buf, sizeof(buf), "%s", name); |
|
5410 |
buf[sizeof(buf) - 1] = '\0'; |
|
5411 |
const int rc = Linux::_pthread_setname_np(pthread_self(), buf); |
|
5412 |
// ERANGE should not happen; all other errors should just be ignored. |
|
5413 |
assert(rc != ERANGE, "pthread_setname_np failed"); |
|
5414 |
} |
|
10739 | 5415 |
} |
5416 |
||
1 | 5417 |
bool os::bind_to_processor(uint processor_id) { |
5418 |
// Not yet implemented. |
|
5419 |
return false; |
|
5420 |
} |
|
5421 |
||
5422 |
/// |
|
5423 |
||
18025 | 5424 |
void os::SuspendedThreadTask::internal_do_task() { |
5425 |
if (do_suspend(_thread->osthread())) { |
|
5426 |
SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); |
|
5427 |
do_task(context); |
|
5428 |
do_resume(_thread->osthread()); |
|
5429 |
} |
|
5430 |
} |
|
5431 |
||
1 | 5432 |
//////////////////////////////////////////////////////////////////////////////// |
5433 |
// debug support |
|
5434 |
||
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5435 |
bool os::find(address addr, outputStream* st) { |
1 | 5436 |
Dl_info dlinfo; |
5437 |
memset(&dlinfo, 0, sizeof(dlinfo)); |
|
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
5438 |
if (dladdr(addr, &dlinfo) != 0) { |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5439 |
st->print(PTR_FORMAT ": ", p2i(addr)); |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
5440 |
if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) { |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5441 |
st->print("%s+" PTR_FORMAT, dlinfo.dli_sname, |
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5442 |
p2i(addr) - p2i(dlinfo.dli_saddr)); |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
5443 |
} else if (dlinfo.dli_fbase != NULL) { |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5444 |
st->print("<offset " PTR_FORMAT ">", p2i(addr) - p2i(dlinfo.dli_fbase)); |
1 | 5445 |
} else { |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5446 |
st->print("<absolute address>"); |
1 | 5447 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
5448 |
if (dlinfo.dli_fname != NULL) { |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5449 |
st->print(" in %s", dlinfo.dli_fname); |
1 | 5450 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
5451 |
if (dlinfo.dli_fbase != NULL) { |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5452 |
st->print(" at " PTR_FORMAT, p2i(dlinfo.dli_fbase)); |
1 | 5453 |
} |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5454 |
st->cr(); |
1 | 5455 |
|
5456 |
if (Verbose) { |
|
5457 |
// decode some bytes around the PC |
|
16670
4af09aff4237
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
16669
diff
changeset
|
5458 |
address begin = clamp_address_in_page(addr-40, addr, os::vm_page_size()); |
4af09aff4237
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
16669
diff
changeset
|
5459 |
address end = clamp_address_in_page(addr+40, addr, os::vm_page_size()); |
1 | 5460 |
address lowest = (address) dlinfo.dli_sname; |
5461 |
if (!lowest) lowest = (address) dlinfo.dli_fbase; |
|
5462 |
if (begin < lowest) begin = lowest; |
|
5463 |
Dl_info dlinfo2; |
|
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
5464 |
if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5465 |
&& end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) { |
1 | 5466 |
end = (address) dlinfo2.dli_saddr; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5467 |
} |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5468 |
Disassembler::decode(begin, end, st); |
1 | 5469 |
} |
5470 |
return true; |
|
5471 |
} |
|
5472 |
return false; |
|
5473 |
} |
|
5474 |
||
5475 |
//////////////////////////////////////////////////////////////////////////////// |
|
5476 |
// misc |
|
5477 |
||
5478 |
// This does not do anything on Linux. This is basically a hook for being |
|
5479 |
// able to use structured exception handling (thread-local exception filters) |
|
5480 |
// on, e.g., Win32. |
|
5481 |
void |
|
33593
60764a78fa5c
8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents:
33148
diff
changeset
|
5482 |
os::os_exception_wrapper(java_call_t f, JavaValue* value, const methodHandle& method, |
1 | 5483 |
JavaCallArguments* args, Thread* thread) { |
5484 |
f(value, method, args, thread); |
|
5485 |
} |
|
5486 |
||
5487 |
void os::print_statistics() { |
|
5488 |
} |
|
5489 |
||
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5490 |
bool os::message_box(const char* title, const char* message) { |
1 | 5491 |
int i; |
5492 |
fdStream err(defaultStream::error_fd()); |
|
5493 |
for (i = 0; i < 78; i++) err.print_raw("="); |
|
5494 |
err.cr(); |
|
5495 |
err.print_raw_cr(title); |
|
5496 |
for (i = 0; i < 78; i++) err.print_raw("-"); |
|
5497 |
err.cr(); |
|
5498 |
err.print_raw_cr(message); |
|
5499 |
for (i = 0; i < 78; i++) err.print_raw("="); |
|
5500 |
err.cr(); |
|
5501 |
||
5502 |
char buf[16]; |
|
5503 |
// Prevent process from exiting upon "read error" without consuming all CPU |
|
5504 |
while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } |
|
5505 |
||
5506 |
return buf[0] == 'y' || buf[0] == 'Y'; |
|
5507 |
} |
|
5508 |
||
5509 |
// Is a (classpath) directory empty? |
|
5510 |
bool os::dir_is_empty(const char* path) { |
|
5511 |
DIR *dir = NULL; |
|
5512 |
struct dirent *ptr; |
|
5513 |
||
5514 |
dir = opendir(path); |
|
5515 |
if (dir == NULL) return true; |
|
5516 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5517 |
// Scan the directory |
1 | 5518 |
bool result = true; |
51106
f605c91e5219
8202353: os::readdir should use readdir instead of readdir_r
kbarrett
parents:
51092
diff
changeset
|
5519 |
while (result && (ptr = readdir(dir)) != NULL) { |
1 | 5520 |
if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { |
5521 |
result = false; |
|
5522 |
} |
|
5523 |
} |
|
5524 |
closedir(dir); |
|
5525 |
return result; |
|
5526 |
} |
|
5527 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5528 |
// This code originates from JDK's sysOpen and open64_w |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5529 |
// from src/solaris/hpi/src/system_md.c |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5530 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5531 |
int os::open(const char *path, int oflag, int mode) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5532 |
if (strlen(path) > MAX_PATH - 1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5533 |
errno = ENAMETOOLONG; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5534 |
return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5535 |
} |
27457
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5536 |
|
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5537 |
// All file descriptors that are opened in the Java process and not |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5538 |
// specifically destined for a subprocess should have the close-on-exec |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5539 |
// flag set. If we don't set it, then careless 3rd party native code |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5540 |
// might fork and exec without closing all appropriate file descriptors |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5541 |
// (e.g. as we do in closeDescriptors in UNIXProcess.c), and this in |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5542 |
// turn might: |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5543 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5544 |
// - cause end-of-file to fail to be detected on some file |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5545 |
// descriptors, resulting in mysterious hangs, or |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5546 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5547 |
// - might cause an fopen in the subprocess to fail on a system |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5548 |
// suffering from bug 1085341. |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5549 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5550 |
// (Yes, the default setting of the close-on-exec flag is a Unix |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5551 |
// design flaw) |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5552 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5553 |
// See: |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5554 |
// 1085341: 32-bit stdio routines should support file descriptors >255 |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5555 |
// 4843136: (process) pipe file descriptor from Runtime.exec not being closed |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5556 |
// 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9 |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5557 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5558 |
// Modern Linux kernels (after 2.6.23 2007) support O_CLOEXEC with open(). |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5559 |
// O_CLOEXEC is preferable to using FD_CLOEXEC on an open file descriptor |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5560 |
// because it saves a system call and removes a small window where the flag |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5561 |
// is unset. On ancient Linux kernels the O_CLOEXEC flag will be ignored |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5562 |
// and we fall back to using FD_CLOEXEC (see below). |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5563 |
#ifdef O_CLOEXEC |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5564 |
oflag |= O_CLOEXEC; |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5565 |
#endif |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5566 |
|
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5567 |
int fd = ::open64(path, oflag, mode); |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5568 |
if (fd == -1) return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5569 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5570 |
//If the open succeeded, the file might still be a directory |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5571 |
{ |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5572 |
struct stat64 buf64; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5573 |
int ret = ::fstat64(fd, &buf64); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5574 |
int st_mode = buf64.st_mode; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5575 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5576 |
if (ret != -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5577 |
if ((st_mode & S_IFMT) == S_IFDIR) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5578 |
errno = EISDIR; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5579 |
::close(fd); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5580 |
return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5581 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5582 |
} else { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5583 |
::close(fd); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5584 |
return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5585 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5586 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5587 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5588 |
#ifdef FD_CLOEXEC |
27457
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5589 |
// Validate that the use of the O_CLOEXEC flag on open above worked. |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5590 |
// With recent kernels, we will perform this check exactly once. |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5591 |
static sig_atomic_t O_CLOEXEC_is_known_to_work = 0; |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5592 |
if (!O_CLOEXEC_is_known_to_work) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5593 |
int flags = ::fcntl(fd, F_GETFD); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5594 |
if (flags != -1) { |
27457
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5595 |
if ((flags & FD_CLOEXEC) != 0) |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5596 |
O_CLOEXEC_is_known_to_work = 1; |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5597 |
else |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5598 |
::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5599 |
} |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5600 |
} |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5601 |
#endif |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5602 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5603 |
return fd; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5604 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5605 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5606 |
|
1 | 5607 |
// create binary file, rewriting existing file if required |
5608 |
int os::create_binary_file(const char* path, bool rewrite_existing) { |
|
5609 |
int oflags = O_WRONLY | O_CREAT; |
|
5610 |
if (!rewrite_existing) { |
|
5611 |
oflags |= O_EXCL; |
|
5612 |
} |
|
5613 |
return ::open64(path, oflags, S_IREAD | S_IWRITE); |
|
5614 |
} |
|
5615 |
||
5616 |
// return current position of file pointer |
|
5617 |
jlong os::current_file_offset(int fd) { |
|
5618 |
return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); |
|
5619 |
} |
|
5620 |
||
5621 |
// move file pointer to the specified offset |
|
5622 |
jlong os::seek_to_file_offset(int fd, jlong offset) { |
|
5623 |
return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); |
|
5624 |
} |
|
5625 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5626 |
// This code originates from JDK's sysAvailable |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5627 |
// from src/solaris/hpi/src/native_threads/src/sys_api_td.c |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5628 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5629 |
int os::available(int fd, jlong *bytes) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5630 |
jlong cur, end; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5631 |
int mode; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5632 |
struct stat64 buf64; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5633 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5634 |
if (::fstat64(fd, &buf64) >= 0) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5635 |
mode = buf64.st_mode; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5636 |
if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5637 |
int n; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5638 |
if (::ioctl(fd, FIONREAD, &n) >= 0) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5639 |
*bytes = n; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5640 |
return 1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5641 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5642 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5643 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5644 |
if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5645 |
return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5646 |
} else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5647 |
return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5648 |
} else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5649 |
return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5650 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5651 |
*bytes = end - cur; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5652 |
return 1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5653 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5654 |
|
1 | 5655 |
// Map a block of memory. |
13195 | 5656 |
char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5657 |
char *addr, size_t bytes, bool read_only, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5658 |
bool allow_exec) { |
1 | 5659 |
int prot; |
11967 | 5660 |
int flags = MAP_PRIVATE; |
1 | 5661 |
|
5662 |
if (read_only) { |
|
5663 |
prot = PROT_READ; |
|
5664 |
} else { |
|
5665 |
prot = PROT_READ | PROT_WRITE; |
|
5666 |
} |
|
5667 |
||
5668 |
if (allow_exec) { |
|
5669 |
prot |= PROT_EXEC; |
|
5670 |
} |
|
5671 |
||
5672 |
if (addr != NULL) { |
|
5673 |
flags |= MAP_FIXED; |
|
5674 |
} |
|
5675 |
||
5676 |
char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, |
|
5677 |
fd, file_offset); |
|
5678 |
if (mapped_address == MAP_FAILED) { |
|
5679 |
return NULL; |
|
5680 |
} |
|
5681 |
return mapped_address; |
|
5682 |
} |
|
5683 |
||
5684 |
||
5685 |
// Remap a block of memory. |
|
13195 | 5686 |
char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5687 |
char *addr, size_t bytes, bool read_only, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5688 |
bool allow_exec) { |
1 | 5689 |
// same as map_memory() on this OS |
5690 |
return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, |
|
5691 |
allow_exec); |
|
5692 |
} |
|
5693 |
||
5694 |
||
5695 |
// Unmap a block of memory. |
|
13195 | 5696 |
bool os::pd_unmap_memory(char* addr, size_t bytes) { |
1 | 5697 |
return munmap(addr, bytes) == 0; |
5698 |
} |
|
5699 |
||
5700 |
static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time); |
|
5701 |
||
51020
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5702 |
static jlong fast_cpu_time(Thread *thread) { |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5703 |
clockid_t clockid; |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5704 |
int rc = os::Linux::pthread_getcpuclockid(thread->osthread()->pthread_id(), |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5705 |
&clockid); |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5706 |
if (rc == 0) { |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5707 |
return os::Linux::fast_thread_cpu_time(clockid); |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5708 |
} else { |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5709 |
// It's possible to encounter a terminated native thread that failed |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5710 |
// to detach itself from the VM - which should result in ESRCH. |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5711 |
assert_status(rc == ESRCH, rc, "pthread_getcpuclockid failed"); |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5712 |
return -1; |
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5713 |
} |
1 | 5714 |
} |
5715 |
||
5716 |
// current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) |
|
5717 |
// are used by JVM M&M and JVMTI to get user+sys or user CPU time |
|
5718 |
// of a thread. |
|
5719 |
// |
|
5720 |
// current_thread_cpu_time() and thread_cpu_time(Thread*) returns |
|
5721 |
// the fast estimate available on the platform. |
|
5722 |
||
5723 |
jlong os::current_thread_cpu_time() { |
|
5724 |
if (os::Linux::supports_fast_thread_cpu_time()) { |
|
5725 |
return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID); |
|
5726 |
} else { |
|
5727 |
// return user + sys since the cost is the same |
|
5728 |
return slow_thread_cpu_time(Thread::current(), true /* user + sys */); |
|
5729 |
} |
|
5730 |
} |
|
5731 |
||
5732 |
jlong os::thread_cpu_time(Thread* thread) { |
|
5733 |
// consistent with what current_thread_cpu_time() returns |
|
5734 |
if (os::Linux::supports_fast_thread_cpu_time()) { |
|
51020
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5735 |
return fast_cpu_time(thread); |
1 | 5736 |
} else { |
5737 |
return slow_thread_cpu_time(thread, true /* user + sys */); |
|
5738 |
} |
|
5739 |
} |
|
5740 |
||
5741 |
jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { |
|
5742 |
if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) { |
|
5743 |
return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID); |
|
5744 |
} else { |
|
5745 |
return slow_thread_cpu_time(Thread::current(), user_sys_cpu_time); |
|
5746 |
} |
|
5747 |
} |
|
5748 |
||
5749 |
jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { |
|
5750 |
if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) { |
|
51020
1835f9fca157
8205878: pthread_getcpuclockid is expected to return 0 code
dholmes
parents:
50667
diff
changeset
|
5751 |
return fast_cpu_time(thread); |
1 | 5752 |
} else { |
5753 |
return slow_thread_cpu_time(thread, user_sys_cpu_time); |
|
5754 |
} |
|
5755 |
} |
|
5756 |
||
5757 |
// -1 on error. |
|
5758 |
static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { |
|
5759 |
pid_t tid = thread->osthread()->thread_id(); |
|
5760 |
char *s; |
|
5761 |
char stat[2048]; |
|
5762 |
int statlen; |
|
5763 |
char proc_name[64]; |
|
5764 |
int count; |
|
5765 |
long sys_time, user_time; |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5766 |
char cdummy; |
1 | 5767 |
int idummy; |
5768 |
long ldummy; |
|
5769 |
FILE *fp; |
|
5770 |
||
24333
c7214442139d
8031126: java/lang/management/ThreadMXBean/ThreadUserTime.java fails intermittently
sla
parents:
23868
diff
changeset
|
5771 |
snprintf(proc_name, 64, "/proc/self/task/%d/stat", tid); |
1 | 5772 |
fp = fopen(proc_name, "r"); |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5773 |
if (fp == NULL) return -1; |
1 | 5774 |
statlen = fread(stat, 1, 2047, fp); |
5775 |
stat[statlen] = '\0'; |
|
5776 |
fclose(fp); |
|
5777 |
||
5778 |
// Skip pid and the command string. Note that we could be dealing with |
|
5779 |
// weird command names, e.g. user could decide to rename java launcher |
|
5780 |
// to "java 1.4.2 :)", then the stat file would look like |
|
5781 |
// 1234 (java 1.4.2 :)) R ... ... |
|
5782 |
// We don't really need to know the command string, just find the last |
|
5783 |
// occurrence of ")" and then start parsing from there. See bug 4726580. |
|
5784 |
s = strrchr(stat, ')'); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5785 |
if (s == NULL) return -1; |
1 | 5786 |
|
5787 |
// Skip blank chars |
|
27471 | 5788 |
do { s++; } while (s && isspace(*s)); |
1 | 5789 |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5790 |
count = sscanf(s,"%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu", |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5791 |
&cdummy, &idummy, &idummy, &idummy, &idummy, &idummy, |
1 | 5792 |
&ldummy, &ldummy, &ldummy, &ldummy, &ldummy, |
5793 |
&user_time, &sys_time); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5794 |
if (count != 13) return -1; |
1 | 5795 |
if (user_sys_cpu_time) { |
5796 |
return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec); |
|
5797 |
} else { |
|
5798 |
return (jlong)user_time * (1000000000 / clock_tics_per_sec); |
|
5799 |
} |
|
5800 |
} |
|
5801 |
||
5802 |
void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
|
5803 |
info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits |
|
5804 |
info_ptr->may_skip_backward = false; // elapsed time not wall time |
|
5805 |
info_ptr->may_skip_forward = false; // elapsed time not wall time |
|
5806 |
info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned |
|
5807 |
} |
|
5808 |
||
5809 |
void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
|
5810 |
info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits |
|
5811 |
info_ptr->may_skip_backward = false; // elapsed time not wall time |
|
5812 |
info_ptr->may_skip_forward = false; // elapsed time not wall time |
|
5813 |
info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned |
|
5814 |
} |
|
5815 |
||
5816 |
bool os::is_thread_cpu_time_supported() { |
|
5817 |
return true; |
|
5818 |
} |
|
5819 |
||
5820 |
// System loadavg support. Returns -1 if load average cannot be obtained. |
|
5821 |
// Linux doesn't yet have a (official) notion of processor sets, |
|
5822 |
// so just return the system wide load average. |
|
5823 |
int os::loadavg(double loadavg[], int nelem) { |
|
5824 |
return ::getloadavg(loadavg, nelem); |
|
5825 |
} |
|
5826 |
||
5827 |
void os::pause() { |
|
5828 |
char filename[MAX_PATH]; |
|
5829 |
if (PauseAtStartupFile && PauseAtStartupFile[0]) { |
|
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5830 |
jio_snprintf(filename, MAX_PATH, "%s", PauseAtStartupFile); |
1 | 5831 |
} else { |
5832 |
jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); |
|
5833 |
} |
|
5834 |
||
5835 |
int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); |
|
5836 |
if (fd != -1) { |
|
5837 |
struct stat buf; |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5838 |
::close(fd); |
1 | 5839 |
while (::stat(filename, &buf) == 0) { |
5840 |
(void)::poll(NULL, 0, 100); |
|
5841 |
} |
|
5842 |
} else { |
|
5843 |
jio_fprintf(stderr, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5844 |
"Could not open pause file '%s', continuing immediately.\n", filename); |
1 | 5845 |
} |
5846 |
} |
|
5847 |
||
5848 |
extern char** environ; |
|
5849 |
||
5850 |
// Run the specified command in a separate process. Return its exit value, |
|
5851 |
// or -1 on failure (e.g. can't fork a new process). |
|
5852 |
// Unlike system(), this function can be called from signal handler. It |
|
5853 |
// doesn't block SIGINT et al. |
|
52109
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5854 |
int os::fork_and_exec(char* cmd, bool use_vfork_if_available) { |
745
47129a5cacd3
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
388
diff
changeset
|
5855 |
const char * argv[4] = {"sh", "-c", cmd, NULL}; |
1 | 5856 |
|
52109
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5857 |
pid_t pid ; |
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5858 |
|
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5859 |
if (use_vfork_if_available) { |
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5860 |
pid = vfork(); |
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5861 |
} else { |
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5862 |
pid = fork(); |
101c2b6eacbe
8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork
mchinnathamb
parents:
51996
diff
changeset
|
5863 |
} |
1 | 5864 |
|
5865 |
if (pid < 0) { |
|
5866 |
// fork failed |
|
5867 |
return -1; |
|
5868 |
||
5869 |
} else if (pid == 0) { |
|
5870 |
// child process |
|
5871 |
||
30745
8ebe80838174
8078470: [Linux] Replace syscall use in os::fork_and_exec with glibc fork() and execve()
dholmes
parents:
30605
diff
changeset
|
5872 |
execve("/bin/sh", (char* const*)argv, environ); |
1 | 5873 |
|
5874 |
// execve failed |
|
5875 |
_exit(-1); |
|
5876 |
||
5877 |
} else { |
|
5878 |
// copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't |
|
5879 |
// care about the actual exit code, for now. |
|
5880 |
||
5881 |
int status; |
|
5882 |
||
5883 |
// Wait for the child process to exit. This returns immediately if |
|
5884 |
// the child has already exited. */ |
|
5885 |
while (waitpid(pid, &status, 0) < 0) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5886 |
switch (errno) { |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5887 |
case ECHILD: return 0; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5888 |
case EINTR: break; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5889 |
default: return -1; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5890 |
} |
1 | 5891 |
} |
5892 |
||
5893 |
if (WIFEXITED(status)) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5894 |
// The child exited normally; get its exit code. |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5895 |
return WEXITSTATUS(status); |
1 | 5896 |
} else if (WIFSIGNALED(status)) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5897 |
// The child exited because of a signal |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5898 |
// The best value to return is 0x80 + signal number, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5899 |
// because that is what all Unix shells do, and because |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5900 |
// it allows callers to distinguish between process exit and |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5901 |
// process death by signal. |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5902 |
return 0x80 + WTERMSIG(status); |
1 | 5903 |
} else { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5904 |
// Unknown exit code; pass it through |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5905 |
return status; |
1 | 5906 |
} |
5907 |
} |
|
5908 |
} |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5909 |
|
13198
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5910 |
// Get the default path to the core file |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5911 |
// Returns the length of the string |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5912 |
int os::get_core_path(char* buffer, size_t bufferSize) { |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5913 |
/* |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5914 |
* Max length of /proc/sys/kernel/core_pattern is 128 characters. |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5915 |
* See https://www.kernel.org/doc/Documentation/sysctl/kernel.txt |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5916 |
*/ |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5917 |
const int core_pattern_len = 129; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5918 |
char core_pattern[core_pattern_len] = {0}; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5919 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5920 |
int core_pattern_file = ::open("/proc/sys/kernel/core_pattern", O_RDONLY); |
33794 | 5921 |
if (core_pattern_file == -1) { |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5922 |
return -1; |
13198
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5923 |
} |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5924 |
|
33794 | 5925 |
ssize_t ret = ::read(core_pattern_file, core_pattern, core_pattern_len); |
5926 |
::close(core_pattern_file); |
|
5927 |
if (ret <= 0 || ret >= core_pattern_len || core_pattern[0] == '\n') { |
|
5928 |
return -1; |
|
5929 |
} |
|
5930 |
if (core_pattern[ret-1] == '\n') { |
|
5931 |
core_pattern[ret-1] = '\0'; |
|
5932 |
} else { |
|
5933 |
core_pattern[ret] = '\0'; |
|
5934 |
} |
|
5935 |
||
51418
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5936 |
// Replace the %p in the core pattern with the process id. NOTE: we do this |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5937 |
// only if the pattern doesn't start with "|", and we support only one %p in |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5938 |
// the pattern. |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5939 |
char *pid_pos = strstr(core_pattern, "%p"); |
51418
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5940 |
const char* tail = (pid_pos != NULL) ? (pid_pos + 2) : ""; // skip over the "%p" |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5941 |
int written; |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5942 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5943 |
if (core_pattern[0] == '/') { |
51418
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5944 |
if (pid_pos != NULL) { |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5945 |
*pid_pos = '\0'; |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5946 |
written = jio_snprintf(buffer, bufferSize, "%s%d%s", core_pattern, |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5947 |
current_process_id(), tail); |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5948 |
} else { |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5949 |
written = jio_snprintf(buffer, bufferSize, "%s", core_pattern); |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5950 |
} |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5951 |
} else { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5952 |
char cwd[PATH_MAX]; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5953 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5954 |
const char* p = get_current_directory(cwd, PATH_MAX); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5955 |
if (p == NULL) { |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5956 |
return -1; |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5957 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5958 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5959 |
if (core_pattern[0] == '|') { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5960 |
written = jio_snprintf(buffer, bufferSize, |
38658
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
5961 |
"\"%s\" (or dumping to %s/core.%d)", |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
5962 |
&core_pattern[1], p, current_process_id()); |
51418
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5963 |
} else if (pid_pos != NULL) { |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5964 |
*pid_pos = '\0'; |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5965 |
written = jio_snprintf(buffer, bufferSize, "%s/%s%d%s", p, core_pattern, |
45d1f2ec5342
8207832: serviceability/sa/ClhsdbCDSCore.java failed with "Couldn't find core file location"
iklam
parents:
51376
diff
changeset
|
5966 |
current_process_id(), tail); |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5967 |
} else { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5968 |
written = jio_snprintf(buffer, bufferSize, "%s/%s", p, core_pattern); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5969 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5970 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5971 |
|
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5972 |
if (written < 0) { |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5973 |
return -1; |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5974 |
} |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5975 |
|
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5976 |
if (((size_t)written < bufferSize) && (pid_pos == NULL) && (core_pattern[0] != '|')) { |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5977 |
int core_uses_pid_file = ::open("/proc/sys/kernel/core_uses_pid", O_RDONLY); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5978 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5979 |
if (core_uses_pid_file != -1) { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5980 |
char core_uses_pid = 0; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5981 |
ssize_t ret = ::read(core_uses_pid_file, &core_uses_pid, 1); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5982 |
::close(core_uses_pid_file); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5983 |
|
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5984 |
if (core_uses_pid == '1') { |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5985 |
jio_snprintf(buffer + written, bufferSize - written, |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5986 |
".%d", current_process_id()); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5987 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5988 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5989 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5990 |
|
13198
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5991 |
return strlen(buffer); |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5992 |
} |
10025
57fe03f10cf2
7061212: use o/s low memory notification in embedded builds
jcoomes
parents:
10023
diff
changeset
|
5993 |
|
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5994 |
bool os::start_debugging(char *buf, int buflen) { |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5995 |
int len = (int)strlen(buf); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5996 |
char *p = &buf[len]; |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5997 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5998 |
jio_snprintf(p, buflen-len, |
38658
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
5999 |
"\n\n" |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6000 |
"Do you want to debug the problem?\n\n" |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6001 |
"To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " UINTX_FORMAT " (" INTPTR_FORMAT ")\n" |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6002 |
"Enter 'yes' to launch gdb automatically (PATH must include gdb)\n" |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6003 |
"Otherwise, press RETURN to abort...", |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6004 |
os::current_process_id(), os::current_process_id(), |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6005 |
os::current_thread_id(), os::current_thread_id()); |
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6006 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6007 |
bool yes = os::message_box("Unexpected Error", buf); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6008 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6009 |
if (yes) { |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6010 |
// yes, user asked VM to launch debugger |
38658
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6011 |
jio_snprintf(buf, sizeof(char)*buflen, "gdb /proc/%d/exe %d", |
34f9c45625d8
8140594: Various minor code improvements (compiler)
goetz
parents:
38071
diff
changeset
|
6012 |
os::current_process_id(), os::current_process_id()); |
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6013 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6014 |
os::fork_and_exec(buf); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6015 |
yes = false; |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6016 |
} |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6017 |
return yes; |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6018 |
} |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6019 |
|
42905 | 6020 |
|
6021 |
// Java/Compiler thread: |
|
6022 |
// |
|
6023 |
// Low memory addresses |
|
6024 |
// P0 +------------------------+ |
|
6025 |
// | |\ Java thread created by VM does not have glibc |
|
6026 |
// | glibc guard page | - guard page, attached Java thread usually has |
|
6027 |
// | |/ 1 glibc guard page. |
|
6028 |
// P1 +------------------------+ Thread::stack_base() - Thread::stack_size() |
|
6029 |
// | |\ |
|
6030 |
// | HotSpot Guard Pages | - red, yellow and reserved pages |
|
6031 |
// | |/ |
|
6032 |
// +------------------------+ JavaThread::stack_reserved_zone_base() |
|
6033 |
// | |\ |
|
6034 |
// | Normal Stack | - |
|
6035 |
// | |/ |
|
6036 |
// P2 +------------------------+ Thread::stack_base() |
|
6037 |
// |
|
6038 |
// Non-Java thread: |
|
6039 |
// |
|
6040 |
// Low memory addresses |
|
6041 |
// P0 +------------------------+ |
|
6042 |
// | |\ |
|
6043 |
// | glibc guard page | - usually 1 page |
|
6044 |
// | |/ |
|
6045 |
// P1 +------------------------+ Thread::stack_base() - Thread::stack_size() |
|
6046 |
// | |\ |
|
6047 |
// | Normal Stack | - |
|
6048 |
// | |/ |
|
6049 |
// P2 +------------------------+ Thread::stack_base() |
|
6050 |
// |
|
6051 |
// ** P1 (aka bottom) and size (P2 = P1 - size) are the address and stack size |
|
6052 |
// returned from pthread_attr_getstack(). |
|
6053 |
// ** Due to NPTL implementation error, linux takes the glibc guard page out |
|
6054 |
// of the stack size given in pthread_attr. We work around this for |
|
6055 |
// threads created by the VM. (We adapt bottom to be P1 and size accordingly.) |
|
6056 |
// |
|
6057 |
#ifndef ZERO |
|
6058 |
static void current_stack_region(address * bottom, size_t * size) { |
|
48005
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
6059 |
if (os::is_primordial_thread()) { |
9fd89aabb6cd
8189170: Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
dholmes
parents:
47903
diff
changeset
|
6060 |
// primordial thread needs special handling because pthread_getattr_np() |
42905 | 6061 |
// may return bogus value. |
6062 |
*bottom = os::Linux::initial_thread_stack_bottom(); |
|
6063 |
*size = os::Linux::initial_thread_stack_size(); |
|
6064 |
} else { |
|
6065 |
pthread_attr_t attr; |
|
6066 |
||
6067 |
int rslt = pthread_getattr_np(pthread_self(), &attr); |
|
6068 |
||
6069 |
// JVM needs to know exact stack location, abort if it fails |
|
6070 |
if (rslt != 0) { |
|
6071 |
if (rslt == ENOMEM) { |
|
6072 |
vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "pthread_getattr_np"); |
|
6073 |
} else { |
|
6074 |
fatal("pthread_getattr_np failed with error = %d", rslt); |
|
6075 |
} |
|
6076 |
} |
|
6077 |
||
6078 |
if (pthread_attr_getstack(&attr, (void **)bottom, size) != 0) { |
|
6079 |
fatal("Cannot locate current stack attributes!"); |
|
6080 |
} |
|
6081 |
||
6082 |
// Work around NPTL stack guard error. |
|
6083 |
size_t guard_size = 0; |
|
6084 |
rslt = pthread_attr_getguardsize(&attr, &guard_size); |
|
6085 |
if (rslt != 0) { |
|
6086 |
fatal("pthread_attr_getguardsize failed with error = %d", rslt); |
|
6087 |
} |
|
6088 |
*bottom += guard_size; |
|
6089 |
*size -= guard_size; |
|
6090 |
||
6091 |
pthread_attr_destroy(&attr); |
|
6092 |
||
6093 |
} |
|
6094 |
assert(os::current_stack_pointer() >= *bottom && |
|
6095 |
os::current_stack_pointer() < *bottom + *size, "just checking"); |
|
6096 |
} |
|
6097 |
||
6098 |
address os::current_stack_base() { |
|
6099 |
address bottom; |
|
6100 |
size_t size; |
|
6101 |
current_stack_region(&bottom, &size); |
|
6102 |
return (bottom + size); |
|
6103 |
} |
|
6104 |
||
6105 |
size_t os::current_stack_size() { |
|
6106 |
// This stack size includes the usable stack and HotSpot guard pages |
|
6107 |
// (for the threads that have Hotspot guard pages). |
|
6108 |
address bottom; |
|
6109 |
size_t size; |
|
6110 |
current_stack_region(&bottom, &size); |
|
6111 |
return size; |
|
6112 |
} |
|
6113 |
#endif |
|
6114 |
||
37465
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6115 |
static inline struct timespec get_mtime(const char* filename) { |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6116 |
struct stat st; |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6117 |
int ret = os::stat(filename, &st); |
52892 | 6118 |
assert(ret == 0, "failed to stat() file '%s': %s", filename, os::strerror(errno)); |
37465
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6119 |
return st.st_mtim; |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6120 |
} |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6121 |
|
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6122 |
int os::compare_file_modified_times(const char* file1, const char* file2) { |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6123 |
struct timespec filetime1 = get_mtime(file1); |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6124 |
struct timespec filetime2 = get_mtime(file2); |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6125 |
int diff = filetime1.tv_sec - filetime2.tv_sec; |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6126 |
if (diff == 0) { |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6127 |
return filetime1.tv_nsec - filetime2.tv_nsec; |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6128 |
} |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6129 |
return diff; |
1d5551f466ee
8146879: Add option for handling existing log files in UL
mlarsson
parents:
37430
diff
changeset
|
6130 |
} |
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
6131 |
|
57804 | 6132 |
bool os::supports_map_sync() { |
6133 |
return true; |
|
6134 |
} |
|
6135 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6136 |
/////////////// Unit tests /////////////// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6137 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6138 |
#ifndef PRODUCT |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6139 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6140 |
class TestReserveMemorySpecial : AllStatic { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6141 |
public: |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6142 |
static void small_page_write(void* addr, size_t size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6143 |
size_t page_size = os::vm_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6144 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6145 |
char* end = (char*)addr + size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6146 |
for (char* p = (char*)addr; p < end; p += page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6147 |
*p = 1; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6148 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6149 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6150 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6151 |
static void test_reserve_memory_special_huge_tlbfs_only(size_t size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6152 |
if (!UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6153 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6154 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6155 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6156 |
char* addr = os::Linux::reserve_memory_special_huge_tlbfs_only(size, NULL, false); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6157 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6158 |
if (addr != NULL) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6159 |
small_page_write(addr, size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6160 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6161 |
os::Linux::release_memory_special_huge_tlbfs(addr, size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6162 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6163 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6164 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6165 |
static void test_reserve_memory_special_huge_tlbfs_only() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6166 |
if (!UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6167 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6168 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6169 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6170 |
size_t lp = os::large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6171 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6172 |
for (size_t size = lp; size <= lp * 10; size += lp) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6173 |
test_reserve_memory_special_huge_tlbfs_only(size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6174 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6175 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6176 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6177 |
static void test_reserve_memory_special_huge_tlbfs_mixed() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6178 |
size_t lp = os::large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6179 |
size_t ag = os::vm_allocation_granularity(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6180 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6181 |
// sizes to test |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6182 |
const size_t sizes[] = { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6183 |
lp, lp + ag, lp + lp / 2, lp * 2, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6184 |
lp * 2 + ag, lp * 2 - ag, lp * 2 + lp / 2, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6185 |
lp * 10, lp * 10 + lp / 2 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6186 |
}; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6187 |
const int num_sizes = sizeof(sizes) / sizeof(size_t); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6188 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6189 |
// For each size/alignment combination, we test three scenarios: |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6190 |
// 1) with req_addr == NULL |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6191 |
// 2) with a non-null req_addr at which we expect to successfully allocate |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6192 |
// 3) with a non-null req_addr which contains a pre-existing mapping, at which we |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6193 |
// expect the allocation to either fail or to ignore req_addr |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6194 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6195 |
// Pre-allocate two areas; they shall be as large as the largest allocation |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6196 |
// and aligned to the largest alignment we will be testing. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6197 |
const size_t mapping_size = sizes[num_sizes - 1] * 2; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6198 |
char* const mapping1 = (char*) ::mmap(NULL, mapping_size, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6199 |
PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6200 |
-1, 0); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6201 |
assert(mapping1 != MAP_FAILED, "should work"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6202 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6203 |
char* const mapping2 = (char*) ::mmap(NULL, mapping_size, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6204 |
PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6205 |
-1, 0); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6206 |
assert(mapping2 != MAP_FAILED, "should work"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6207 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6208 |
// Unmap the first mapping, but leave the second mapping intact: the first |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6209 |
// mapping will serve as a value for a "good" req_addr (case 2). The second |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6210 |
// mapping, still intact, as "bad" req_addr (case 3). |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6211 |
::munmap(mapping1, mapping_size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6212 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6213 |
// Case 1 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6214 |
for (int i = 0; i < num_sizes; i++) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6215 |
const size_t size = sizes[i]; |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
6216 |
for (size_t alignment = ag; is_aligned(size, alignment); alignment *= 2) { |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6217 |
char* p = os::Linux::reserve_memory_special_huge_tlbfs_mixed(size, alignment, NULL, false); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6218 |
if (p != NULL) { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
6219 |
assert(is_aligned(p, alignment), "must be"); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6220 |
small_page_write(p, size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6221 |
os::Linux::release_memory_special_huge_tlbfs(p, size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6222 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6223 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6224 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6225 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6226 |
// Case 2 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6227 |
for (int i = 0; i < num_sizes; i++) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6228 |
const size_t size = sizes[i]; |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
6229 |
for (size_t alignment = ag; is_aligned(size, alignment); alignment *= 2) { |
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46618
diff
changeset
|
6230 |
char* const req_addr = align_up(mapping1, alignment); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6231 |
char* p = os::Linux::reserve_memory_special_huge_tlbfs_mixed(size, alignment, req_addr, false); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6232 |
if (p != NULL) { |
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|
6233 |
assert(p == req_addr, "must be"); |
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|
6234 |
small_page_write(p, size); |
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|
6235 |
os::Linux::release_memory_special_huge_tlbfs(p, size); |
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|
6236 |
} |
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|
6237 |
} |
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|
6238 |
} |
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changeset
|
6239 |
|
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|
6240 |
// Case 3 |
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|
6241 |
for (int i = 0; i < num_sizes; i++) { |
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|
6242 |
const size_t size = sizes[i]; |
46619
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|
6243 |
for (size_t alignment = ag; is_aligned(size, alignment); alignment *= 2) { |
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|
6244 |
char* const req_addr = align_up(mapping2, alignment); |
30605
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|
6245 |
char* p = os::Linux::reserve_memory_special_huge_tlbfs_mixed(size, alignment, req_addr, false); |
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|
6246 |
// as the area around req_addr contains already existing mappings, the API should always |
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|
6247 |
// return NULL (as per contract, it cannot return another address) |
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|
6248 |
assert(p == NULL, "must be"); |
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changeset
|
6249 |
} |
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|
6250 |
} |
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changeset
|
6251 |
|
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|
6252 |
::munmap(mapping2, mapping_size); |
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changeset
|
6253 |
|
19546
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changeset
|
6254 |
} |
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changeset
|
6255 |
|
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changeset
|
6256 |
static void test_reserve_memory_special_huge_tlbfs() { |
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changeset
|
6257 |
if (!UseHugeTLBFS) { |
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changeset
|
6258 |
return; |
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changeset
|
6259 |
} |
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changeset
|
6260 |
|
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changeset
|
6261 |
test_reserve_memory_special_huge_tlbfs_only(); |
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changeset
|
6262 |
test_reserve_memory_special_huge_tlbfs_mixed(); |
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changeset
|
6263 |
} |
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changeset
|
6264 |
|
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changeset
|
6265 |
static void test_reserve_memory_special_shm(size_t size, size_t alignment) { |
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changeset
|
6266 |
if (!UseSHM) { |
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changeset
|
6267 |
return; |
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diff
changeset
|
6268 |
} |
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diff
changeset
|
6269 |
|
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changeset
|
6270 |
char* addr = os::Linux::reserve_memory_special_shm(size, alignment, NULL, false); |
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changeset
|
6271 |
|
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changeset
|
6272 |
if (addr != NULL) { |
46619
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changeset
|
6273 |
assert(is_aligned(addr, alignment), "Check"); |
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changeset
|
6274 |
assert(is_aligned(addr, os::large_page_size()), "Check"); |
19546
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changeset
|
6275 |
|
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changeset
|
6276 |
small_page_write(addr, size); |
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diff
changeset
|
6277 |
|
f6b7c9e96ea3
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diff
changeset
|
6278 |
os::Linux::release_memory_special_shm(addr, size); |
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diff
changeset
|
6279 |
} |
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diff
changeset
|
6280 |
} |
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diff
changeset
|
6281 |
|
f6b7c9e96ea3
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diff
changeset
|
6282 |
static void test_reserve_memory_special_shm() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
6283 |
size_t lp = os::large_page_size(); |
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8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
6284 |
size_t ag = os::vm_allocation_granularity(); |
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8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6285 |
|
f6b7c9e96ea3
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diff
changeset
|
6286 |
for (size_t size = ag; size < lp * 3; size += ag) { |
46619
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8178499: Remove _ptr_ and _size_ infixes from align functions
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changeset
|
6287 |
for (size_t alignment = ag; is_aligned(size, alignment); alignment *= 2) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
6288 |
test_reserve_memory_special_shm(size, alignment); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6289 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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18683
diff
changeset
|
6290 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6291 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6292 |
|
f6b7c9e96ea3
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diff
changeset
|
6293 |
static void test() { |
f6b7c9e96ea3
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changeset
|
6294 |
test_reserve_memory_special_huge_tlbfs(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
6295 |
test_reserve_memory_special_shm(); |
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diff
changeset
|
6296 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6297 |
}; |
f6b7c9e96ea3
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diff
changeset
|
6298 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6299 |
void TestReserveMemorySpecial_test() { |
f6b7c9e96ea3
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changeset
|
6300 |
TestReserveMemorySpecial::test(); |
f6b7c9e96ea3
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changeset
|
6301 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
6302 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
6303 |
#endif |