author | stuefe |
Mon, 29 Feb 2016 08:50:57 +0100 | |
changeset 36379 | 0c596dc28ed7 |
parent 36355 | dd339cbafd31 |
child 37092 | 0e56e3c9d545 |
child 36560 | 59ca2b7f6162 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1999, 2016, 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 "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 "jvm_linux.h" |
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#include "logging/log.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/filemap.hpp" |
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#include "mutex_linux.inline.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_share_linux.hpp" |
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#include "prims/jniFastGetField.hpp" |
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#include "prims/jvm.h" |
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#include "prims/jvm_misc.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/atomic.inline.hpp" |
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#include "runtime/extendedPC.hpp" |
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#include "runtime/globals.hpp" |
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#include "runtime/interfaceSupport.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.inline.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/timer.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/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 <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 <semaphore.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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|
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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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||
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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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#define LARGEPAGES_BIT (1 << 6) |
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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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||
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int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL; |
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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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Mutex* os::Linux::_createThread_lock = 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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const int os::Linux::_vm_default_page_size = (8 * K); |
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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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pthread_condattr_t os::Linux::_condattr[1]; |
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static jlong initial_time_count=0; |
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||
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static int clock_tics_per_sec = 100; |
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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; |
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sigset_t SR_sigset; |
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// Declarations |
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static void unpackTime(timespec* absTime, bool isAbsolute, jlong time); |
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// utility functions |
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static int SR_initialize(); |
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||
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julong os::available_memory() { |
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return Linux::available_memory(); |
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} |
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||
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julong os::Linux::available_memory() { |
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// values in struct sysinfo are "unsigned long" |
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struct sysinfo si; |
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sysinfo(&si); |
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return (julong)si.freeram * si.mem_unit; |
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} |
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julong os::physical_memory() { |
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return Linux::physical_memory(); |
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} |
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||
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// Return true if user is running as root. |
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bool os::have_special_privileges() { |
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static bool init = false; |
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static bool privileges = false; |
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if (!init) { |
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privileges = (getuid() != geteuid()) || (getgid() != getegid()); |
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init = true; |
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} |
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return privileges; |
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} |
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#ifndef SYS_gettid |
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// i386: 224, ia64: 1105, amd64: 186, sparc 143 |
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#ifdef __ia64__ |
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#define SYS_gettid 1105 |
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#else |
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#ifdef __i386__ |
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#define SYS_gettid 224 |
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#else |
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#ifdef __amd64__ |
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#define SYS_gettid 186 |
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#else |
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#ifdef __sparc__ |
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#define SYS_gettid 143 |
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#else |
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#error define gettid for the arch |
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#endif |
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#endif |
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#endif |
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#endif |
1 | 220 |
#endif |
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||
222 |
// Cpu architecture string |
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static char cpu_arch[] = HOTSPOT_LIB_ARCH; |
1 | 224 |
|
225 |
||
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// pid_t gettid() |
|
227 |
// |
|
228 |
// Returns the kernel thread id of the currently running thread. Kernel |
|
229 |
// thread id is used to access /proc. |
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230 |
pid_t os::Linux::gettid() { |
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231 |
int rslt = syscall(SYS_gettid); |
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assert(rslt != -1, "must be."); // old linuxthreads implementation? |
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return (pid_t)rslt; |
1 | 234 |
} |
235 |
||
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// Most versions of linux have a bug where the number of processors are |
|
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// determined by looking at the /proc file system. In a chroot environment, |
|
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// the system call returns 1. This causes the VM to act as if it is |
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// a single processor and elide locking (see is_MP() call). |
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static bool unsafe_chroot_detected = false; |
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static const char *unstable_chroot_error = "/proc file system not found.\n" |
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"Java may be unstable running multithreaded in a chroot " |
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"environment on Linux when /proc filesystem is not mounted."; |
1 | 244 |
|
245 |
void os::Linux::initialize_system_info() { |
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set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
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247 |
if (processor_count() == 1) { |
1 | 248 |
pid_t pid = os::Linux::gettid(); |
249 |
char fname[32]; |
|
250 |
jio_snprintf(fname, sizeof(fname), "/proc/%d", pid); |
|
251 |
FILE *fp = fopen(fname, "r"); |
|
252 |
if (fp == NULL) { |
|
253 |
unsafe_chroot_detected = true; |
|
254 |
} else { |
|
255 |
fclose(fp); |
|
256 |
} |
|
257 |
} |
|
258 |
_physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); |
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assert(processor_count() > 0, "linux error"); |
1 | 260 |
} |
261 |
||
262 |
void os::init_system_properties_values() { |
|
263 |
// The next steps are taken in the product version: |
|
264 |
// |
|
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// Obtain the JAVA_HOME value from the location of libjvm.so. |
1 | 266 |
// This library should be located at: |
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// <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm.so. |
1 | 268 |
// |
269 |
// If "/jre/lib/" appears at the right place in the path, then we |
|
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// assume libjvm.so is installed in a JDK and we use this path. |
1 | 271 |
// |
272 |
// Otherwise exit with message: "Could not create the Java virtual machine." |
|
273 |
// |
|
274 |
// The following extra steps are taken in the debugging version: |
|
275 |
// |
|
276 |
// If "/jre/lib/" does NOT appear at the right place in the path |
|
277 |
// instead of exit check for $JAVA_HOME environment variable. |
|
278 |
// |
|
279 |
// If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, |
|
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|
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// then we append a fake suffix "hotspot/libjvm.so" to this path so |
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|
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// it looks like libjvm.so is installed there |
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// <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
1 | 283 |
// |
284 |
// Otherwise exit. |
|
285 |
// |
|
286 |
// Important note: if the location of libjvm.so changes this |
|
287 |
// code needs to be changed accordingly. |
|
288 |
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// See ld(1): |
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// The linker uses the following search paths to locate required |
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|
291 |
// shared libraries: |
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292 |
// 1: ... |
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|
293 |
// ... |
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|
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// 7: The default directories, normally /lib and /usr/lib. |
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|
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#if defined(AMD64) || defined(_LP64) && (defined(SPARC) || defined(PPC) || defined(S390)) |
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#define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib" |
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#else |
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#define DEFAULT_LIBPATH "/lib:/usr/lib" |
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#endif |
1 | 300 |
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|
301 |
// Base path of extensions installed on the system. |
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302 |
#define SYS_EXT_DIR "/usr/java/packages" |
1 | 303 |
#define EXTENSIONS_DIR "/lib/ext" |
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|
304 |
|
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|
305 |
// Buffer that fits several sprintfs. |
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|
306 |
// Note that the space for the colon and the trailing null are provided |
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|
307 |
// by the nulls included by the sizeof operator. |
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|
308 |
const size_t bufsize = |
27562 | 309 |
MAX2((size_t)MAXPATHLEN, // For dll_dir & friends. |
310 |
(size_t)MAXPATHLEN + sizeof(EXTENSIONS_DIR) + sizeof(SYS_EXT_DIR) + sizeof(EXTENSIONS_DIR)); // extensions dir |
|
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|
311 |
char *buf = (char *)NEW_C_HEAP_ARRAY(char, bufsize, mtInternal); |
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|
312 |
|
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|
313 |
// sysclasspath, java_home, dll_dir |
1 | 314 |
{ |
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|
315 |
char *pslash; |
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|
316 |
os::jvm_path(buf, bufsize); |
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|
317 |
|
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|
318 |
// Found the full path to libjvm.so. |
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|
319 |
// Now cut the path to <java_home>/jre if we can. |
27471 | 320 |
pslash = strrchr(buf, '/'); |
321 |
if (pslash != NULL) { |
|
322 |
*pslash = '\0'; // Get rid of /libjvm.so. |
|
323 |
} |
|
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|
324 |
pslash = strrchr(buf, '/'); |
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|
325 |
if (pslash != NULL) { |
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|
326 |
*pslash = '\0'; // Get rid of /{client|server|hotspot}. |
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|
327 |
} |
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|
328 |
Arguments::set_dll_dir(buf); |
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|
329 |
|
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|
330 |
if (pslash != NULL) { |
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|
331 |
pslash = strrchr(buf, '/'); |
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|
332 |
if (pslash != NULL) { |
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|
333 |
*pslash = '\0'; // Get rid of /<arch>. |
1 | 334 |
pslash = strrchr(buf, '/'); |
335 |
if (pslash != NULL) { |
|
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|
336 |
*pslash = '\0'; // Get rid of /lib. |
1 | 337 |
} |
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|
338 |
} |
1 | 339 |
} |
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|
340 |
Arguments::set_java_home(buf); |
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|
341 |
set_boot_path('/', ':'); |
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|
342 |
} |
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|
343 |
|
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|
344 |
// Where to look for native libraries. |
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|
345 |
// |
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|
346 |
// Note: Due to a legacy implementation, most of the library path |
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|
347 |
// is set in the launcher. This was to accomodate linking restrictions |
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|
348 |
// on legacy Linux implementations (which are no longer supported). |
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|
349 |
// Eventually, all the library path setting will be done here. |
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|
350 |
// |
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|
351 |
// However, to prevent the proliferation of improperly built native |
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|
352 |
// libraries, the new path component /usr/java/packages is added here. |
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|
353 |
// Eventually, all the library path setting will be done here. |
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|
354 |
{ |
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|
355 |
// Get the user setting of LD_LIBRARY_PATH, and prepended it. It |
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|
356 |
// should always exist (until the legacy problem cited above is |
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|
357 |
// addressed). |
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|
358 |
const char *v = ::getenv("LD_LIBRARY_PATH"); |
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|
359 |
const char *v_colon = ":"; |
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|
360 |
if (v == NULL) { v = ""; v_colon = ""; } |
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|
361 |
// That's +1 for the colon and +1 for the trailing '\0'. |
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|
362 |
char *ld_library_path = (char *)NEW_C_HEAP_ARRAY(char, |
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|
363 |
strlen(v) + 1 + |
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|
364 |
sizeof(SYS_EXT_DIR) + sizeof("/lib/") + strlen(cpu_arch) + sizeof(DEFAULT_LIBPATH) + 1, |
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|
365 |
mtInternal); |
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|
366 |
sprintf(ld_library_path, "%s%s" SYS_EXT_DIR "/lib/%s:" DEFAULT_LIBPATH, v, v_colon, cpu_arch); |
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|
367 |
Arguments::set_library_path(ld_library_path); |
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|
368 |
FREE_C_HEAP_ARRAY(char, ld_library_path); |
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|
369 |
} |
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|
370 |
|
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|
371 |
// Extensions directories. |
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|
372 |
sprintf(buf, "%s" EXTENSIONS_DIR ":" SYS_EXT_DIR EXTENSIONS_DIR, Arguments::get_java_home()); |
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|
373 |
Arguments::set_ext_dirs(buf); |
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|
374 |
|
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|
375 |
FREE_C_HEAP_ARRAY(char, buf); |
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|
376 |
|
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|
377 |
#undef DEFAULT_LIBPATH |
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|
378 |
#undef SYS_EXT_DIR |
1 | 379 |
#undef EXTENSIONS_DIR |
380 |
} |
|
381 |
||
382 |
//////////////////////////////////////////////////////////////////////////////// |
|
383 |
// breakpoint support |
|
384 |
||
385 |
void os::breakpoint() { |
|
386 |
BREAKPOINT; |
|
387 |
} |
|
388 |
||
389 |
extern "C" void breakpoint() { |
|
390 |
// use debugger to set breakpoint here |
|
391 |
} |
|
392 |
||
393 |
//////////////////////////////////////////////////////////////////////////////// |
|
394 |
// signal support |
|
395 |
||
396 |
debug_only(static bool signal_sets_initialized = false); |
|
397 |
static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; |
|
398 |
||
399 |
bool os::Linux::is_sig_ignored(int sig) { |
|
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400 |
struct sigaction oact; |
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|
401 |
sigaction(sig, (struct sigaction*)NULL, &oact); |
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|
402 |
void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) |
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403 |
: CAST_FROM_FN_PTR(void*, oact.sa_handler); |
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|
404 |
if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) { |
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|
405 |
return true; |
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406 |
} else { |
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|
407 |
return false; |
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|
408 |
} |
1 | 409 |
} |
410 |
||
411 |
void os::Linux::signal_sets_init() { |
|
412 |
// Should also have an assertion stating we are still single-threaded. |
|
413 |
assert(!signal_sets_initialized, "Already initialized"); |
|
414 |
// Fill in signals that are necessarily unblocked for all threads in |
|
415 |
// the VM. Currently, we unblock the following signals: |
|
416 |
// SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden |
|
417 |
// by -Xrs (=ReduceSignalUsage)); |
|
418 |
// BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all |
|
419 |
// other threads. The "ReduceSignalUsage" boolean tells us not to alter |
|
420 |
// the dispositions or masks wrt these signals. |
|
421 |
// Programs embedding the VM that want to use the above signals for their |
|
422 |
// own purposes must, at this time, use the "-Xrs" option to prevent |
|
423 |
// interference with shutdown hooks and BREAK_SIGNAL thread dumping. |
|
424 |
// (See bug 4345157, and other related bugs). |
|
425 |
// In reality, though, unblocking these signals is really a nop, since |
|
426 |
// these signals are not blocked by default. |
|
427 |
sigemptyset(&unblocked_sigs); |
|
428 |
sigemptyset(&allowdebug_blocked_sigs); |
|
429 |
sigaddset(&unblocked_sigs, SIGILL); |
|
430 |
sigaddset(&unblocked_sigs, SIGSEGV); |
|
431 |
sigaddset(&unblocked_sigs, SIGBUS); |
|
432 |
sigaddset(&unblocked_sigs, SIGFPE); |
|
22848
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
433 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
434 |
sigaddset(&unblocked_sigs, SIGTRAP); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
435 |
#endif |
1 | 436 |
sigaddset(&unblocked_sigs, SR_signum); |
437 |
||
438 |
if (!ReduceSignalUsage) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
439 |
if (!os::Linux::is_sig_ignored(SHUTDOWN1_SIGNAL)) { |
1 | 440 |
sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); |
441 |
sigaddset(&allowdebug_blocked_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
|
442 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
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parents:
26135
diff
changeset
|
443 |
if (!os::Linux::is_sig_ignored(SHUTDOWN2_SIGNAL)) { |
1 | 444 |
sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); |
445 |
sigaddset(&allowdebug_blocked_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
|
446 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
447 |
if (!os::Linux::is_sig_ignored(SHUTDOWN3_SIGNAL)) { |
1 | 448 |
sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); |
449 |
sigaddset(&allowdebug_blocked_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
|
450 |
} |
1 | 451 |
} |
452 |
// Fill in signals that are blocked by all but the VM thread. |
|
453 |
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
|
454 |
if (!ReduceSignalUsage) { |
1 | 455 |
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
|
456 |
} |
1 | 457 |
debug_only(signal_sets_initialized = true); |
458 |
||
459 |
} |
|
460 |
||
461 |
// These are signals that are unblocked while a thread is running Java. |
|
462 |
// (For some reason, they get blocked by default.) |
|
463 |
sigset_t* os::Linux::unblocked_signals() { |
|
464 |
assert(signal_sets_initialized, "Not initialized"); |
|
465 |
return &unblocked_sigs; |
|
466 |
} |
|
467 |
||
468 |
// These are the signals that are blocked while a (non-VM) thread is |
|
469 |
// running Java. Only the VM thread handles these signals. |
|
470 |
sigset_t* os::Linux::vm_signals() { |
|
471 |
assert(signal_sets_initialized, "Not initialized"); |
|
472 |
return &vm_sigs; |
|
473 |
} |
|
474 |
||
475 |
// These are signals that are blocked during cond_wait to allow debugger in |
|
476 |
sigset_t* os::Linux::allowdebug_blocked_signals() { |
|
477 |
assert(signal_sets_initialized, "Not initialized"); |
|
478 |
return &allowdebug_blocked_sigs; |
|
479 |
} |
|
480 |
||
481 |
void os::Linux::hotspot_sigmask(Thread* thread) { |
|
482 |
||
483 |
//Save caller's signal mask before setting VM signal mask |
|
484 |
sigset_t caller_sigmask; |
|
485 |
pthread_sigmask(SIG_BLOCK, NULL, &caller_sigmask); |
|
486 |
||
487 |
OSThread* osthread = thread->osthread(); |
|
488 |
osthread->set_caller_sigmask(caller_sigmask); |
|
489 |
||
490 |
pthread_sigmask(SIG_UNBLOCK, os::Linux::unblocked_signals(), NULL); |
|
491 |
||
492 |
if (!ReduceSignalUsage) { |
|
493 |
if (thread->is_VM_thread()) { |
|
494 |
// Only the VM thread handles BREAK_SIGNAL ... |
|
495 |
pthread_sigmask(SIG_UNBLOCK, vm_signals(), NULL); |
|
496 |
} else { |
|
497 |
// ... all other threads block BREAK_SIGNAL |
|
498 |
pthread_sigmask(SIG_BLOCK, vm_signals(), NULL); |
|
499 |
} |
|
500 |
} |
|
501 |
} |
|
502 |
||
503 |
////////////////////////////////////////////////////////////////////////////// |
|
504 |
// detecting pthread library |
|
505 |
||
506 |
void os::Linux::libpthread_init() { |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
507 |
// Save glibc and pthread version strings. |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
508 |
#if !defined(_CS_GNU_LIBC_VERSION) || \ |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
509 |
!defined(_CS_GNU_LIBPTHREAD_VERSION) |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
510 |
#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
|
511 |
#endif |
1 | 512 |
|
513 |
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
|
514 |
assert(n > 0, "cannot retrieve glibc version"); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
515 |
char *str = (char *)malloc(n, mtInternal); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
516 |
confstr(_CS_GNU_LIBC_VERSION, str, n); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
517 |
os::Linux::set_glibc_version(str); |
1 | 518 |
|
519 |
n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0); |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
520 |
assert(n > 0, "cannot retrieve pthread version"); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
521 |
str = (char *)malloc(n, mtInternal); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
522 |
confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n); |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
523 |
os::Linux::set_libpthread_version(str); |
1 | 524 |
} |
525 |
||
526 |
///////////////////////////////////////////////////////////////////////////// |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
527 |
// thread stack expansion |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
528 |
|
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
529 |
// 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
|
530 |
// 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
|
531 |
// 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
|
532 |
// 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
|
533 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
534 |
// Manually expanding the stack was historically needed on LinuxThreads |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
535 |
// 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
|
536 |
// 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
|
537 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
538 |
// 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
|
539 |
// whose stacks are - like the old LinuxThreads - implemented using |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
540 |
// mmap(MAP_GROWSDOWN). |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
541 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
542 |
// 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
|
543 |
// 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
|
544 |
// 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
|
545 |
// |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
546 |
// The following historical comment describes the details about running |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
547 |
// on a thread stack allocated with mmap(MAP_GROWSDOWN): |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
548 |
|
1 | 549 |
|
550 |
// Force Linux kernel to expand current thread stack. If "bottom" is close |
|
551 |
// to the stack guard, caller should block all signals. |
|
552 |
// |
|
553 |
// MAP_GROWSDOWN: |
|
554 |
// A special mmap() flag that is used to implement thread stacks. It tells |
|
555 |
// kernel that the memory region should extend downwards when needed. This |
|
556 |
// allows early versions of LinuxThreads to only mmap the first few pages |
|
557 |
// when creating a new thread. Linux kernel will automatically expand thread |
|
558 |
// stack as needed (on page faults). |
|
559 |
// |
|
560 |
// However, because the memory region of a MAP_GROWSDOWN stack can grow on |
|
561 |
// demand, if a page fault happens outside an already mapped MAP_GROWSDOWN |
|
562 |
// region, it's hard to tell if the fault is due to a legitimate stack |
|
563 |
// access or because of reading/writing non-exist memory (e.g. buffer |
|
564 |
// overrun). As a rule, if the fault happens below current stack pointer, |
|
565 |
// Linux kernel does not expand stack, instead a SIGSEGV is sent to the |
|
566 |
// application (see Linux kernel fault.c). |
|
567 |
// |
|
568 |
// This Linux feature can cause SIGSEGV when VM bangs thread stack for |
|
569 |
// stack overflow detection. |
|
570 |
// |
|
571 |
// 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
|
572 |
// not use MAP_GROWSDOWN. |
1 | 573 |
// |
574 |
// To get around the problem and allow stack banging on Linux, we need to |
|
575 |
// manually expand thread stack after receiving the SIGSEGV. |
|
576 |
// |
|
577 |
// There are two ways to expand thread stack to address "bottom", we used |
|
578 |
// both of them in JVM before 1.5: |
|
579 |
// 1. adjust stack pointer first so that it is below "bottom", and then |
|
580 |
// touch "bottom" |
|
581 |
// 2. mmap() the page in question |
|
582 |
// |
|
583 |
// Now alternate signal stack is gone, it's harder to use 2. For instance, |
|
584 |
// if current sp is already near the lower end of page 101, and we need to |
|
585 |
// call mmap() to map page 100, it is possible that part of the mmap() frame |
|
586 |
// will be placed in page 100. When page 100 is mapped, it is zero-filled. |
|
587 |
// That will destroy the mmap() frame and cause VM to crash. |
|
588 |
// |
|
589 |
// The following code works by adjusting sp first, then accessing the "bottom" |
|
590 |
// page to force a page fault. Linux kernel will then automatically expand the |
|
591 |
// stack mapping. |
|
592 |
// |
|
593 |
// _expand_stack_to() assumes its frame size is less than page size, which |
|
594 |
// should always be true if the function is not inlined. |
|
595 |
||
596 |
#if __GNUC__ < 3 // gcc 2.x does not support noinline attribute |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
597 |
#define NOINLINE |
1 | 598 |
#else |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
599 |
#define NOINLINE __attribute__ ((noinline)) |
1 | 600 |
#endif |
601 |
||
602 |
static void _expand_stack_to(address bottom) NOINLINE; |
|
603 |
||
604 |
static void _expand_stack_to(address bottom) { |
|
605 |
address sp; |
|
606 |
size_t size; |
|
607 |
volatile char *p; |
|
608 |
||
609 |
// Adjust bottom to point to the largest address within the same page, it |
|
610 |
// gives us a one-page buffer if alloca() allocates slightly more memory. |
|
611 |
bottom = (address)align_size_down((uintptr_t)bottom, os::Linux::page_size()); |
|
612 |
bottom += os::Linux::page_size() - 1; |
|
613 |
||
614 |
// sp might be slightly above current stack pointer; if that's the case, we |
|
615 |
// will alloca() a little more space than necessary, which is OK. Don't use |
|
616 |
// os::current_stack_pointer(), as its result can be slightly below current |
|
617 |
// stack pointer, causing us to not alloca enough to reach "bottom". |
|
618 |
sp = (address)&sp; |
|
619 |
||
620 |
if (sp > bottom) { |
|
621 |
size = sp - bottom; |
|
622 |
p = (volatile char *)alloca(size); |
|
623 |
assert(p != NULL && p <= (volatile char *)bottom, "alloca problem?"); |
|
624 |
p[0] = '\0'; |
|
625 |
} |
|
626 |
} |
|
627 |
||
628 |
bool os::Linux::manually_expand_stack(JavaThread * t, address addr) { |
|
629 |
assert(t!=NULL, "just checking"); |
|
630 |
assert(t->osthread()->expanding_stack(), "expand should be set"); |
|
631 |
assert(t->stack_base() != NULL, "stack_base was not initialized"); |
|
632 |
||
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
633 |
if (addr < t->stack_base() && addr >= t->stack_reserved_zone_base()) { |
1 | 634 |
sigset_t mask_all, old_sigset; |
635 |
sigfillset(&mask_all); |
|
636 |
pthread_sigmask(SIG_SETMASK, &mask_all, &old_sigset); |
|
637 |
_expand_stack_to(addr); |
|
638 |
pthread_sigmask(SIG_SETMASK, &old_sigset, NULL); |
|
639 |
return true; |
|
640 |
} |
|
641 |
return false; |
|
642 |
} |
|
643 |
||
644 |
////////////////////////////////////////////////////////////////////////////// |
|
645 |
// create new thread |
|
646 |
||
647 |
// Thread start routine for all newly created threads |
|
648 |
static void *java_start(Thread *thread) { |
|
649 |
// Try to randomize the cache line index of hot stack frames. |
|
650 |
// This helps when threads of the same stack traces evict each other's |
|
651 |
// cache lines. The threads can be either from the same JVM instance, or |
|
652 |
// from different JVM instances. The benefit is especially true for |
|
653 |
// processors with hyperthreading technology. |
|
654 |
static int counter = 0; |
|
655 |
int pid = os::current_process_id(); |
|
656 |
alloca(((pid ^ counter++) & 7) * 128); |
|
657 |
||
34633
2a6c7c7b30a7
8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables
dholmes
parents:
34621
diff
changeset
|
658 |
thread->initialize_thread_current(); |
1 | 659 |
|
660 |
OSThread* osthread = thread->osthread(); |
|
661 |
Monitor* sync = osthread->startThread_lock(); |
|
662 |
||
32070
8f5a14b884e2
6661889: thread id on Linux is inconsistent in error and log outputs
jmanson
parents:
31963
diff
changeset
|
663 |
osthread->set_thread_id(os::current_thread_id()); |
1 | 664 |
|
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
665 |
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
|
666 |
os::current_thread_id(), (uintx) pthread_self()); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
667 |
|
1 | 668 |
if (UseNUMA) { |
669 |
int lgrp_id = os::numa_get_group_id(); |
|
670 |
if (lgrp_id != -1) { |
|
671 |
thread->set_lgrp_id(lgrp_id); |
|
672 |
} |
|
673 |
} |
|
674 |
// initialize signal mask for this thread |
|
675 |
os::Linux::hotspot_sigmask(thread); |
|
676 |
||
677 |
// initialize floating point control register |
|
678 |
os::Linux::init_thread_fpu_state(); |
|
679 |
||
680 |
// handshaking with parent thread |
|
681 |
{ |
|
682 |
MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag); |
|
683 |
||
684 |
// notify parent thread |
|
685 |
osthread->set_state(INITIALIZED); |
|
686 |
sync->notify_all(); |
|
687 |
||
688 |
// wait until os::start_thread() |
|
689 |
while (osthread->get_state() == INITIALIZED) { |
|
690 |
sync->wait(Mutex::_no_safepoint_check_flag); |
|
691 |
} |
|
692 |
} |
|
693 |
||
694 |
// call one more level start routine |
|
695 |
thread->run(); |
|
696 |
||
36379
0c596dc28ed7
8150619: Improve thread based logging introduced with 8149036
stuefe
parents:
36355
diff
changeset
|
697 |
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
|
698 |
os::current_thread_id(), (uintx) pthread_self()); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
699 |
|
1 | 700 |
return 0; |
701 |
} |
|
702 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
703 |
bool os::create_thread(Thread* thread, ThreadType thr_type, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
704 |
size_t stack_size) { |
1 | 705 |
assert(thread->osthread() == NULL, "caller responsible"); |
706 |
||
707 |
// Allocate the OSThread object |
|
708 |
OSThread* osthread = new OSThread(NULL, NULL); |
|
709 |
if (osthread == NULL) { |
|
710 |
return false; |
|
711 |
} |
|
712 |
||
713 |
// set the correct thread state |
|
714 |
osthread->set_thread_type(thr_type); |
|
715 |
||
716 |
// Initial state is ALLOCATED but not INITIALIZED |
|
717 |
osthread->set_state(ALLOCATED); |
|
718 |
||
719 |
thread->set_osthread(osthread); |
|
720 |
||
721 |
// init thread attributes |
|
722 |
pthread_attr_t attr; |
|
723 |
pthread_attr_init(&attr); |
|
724 |
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); |
|
725 |
||
726 |
// stack size |
|
32080
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
727 |
// calculate stack size if it's not specified by caller |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
728 |
if (stack_size == 0) { |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
729 |
stack_size = os::Linux::default_stack_size(thr_type); |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
730 |
|
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
731 |
switch (thr_type) { |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
732 |
case os::java_thread: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
733 |
// Java threads use ThreadStackSize which default value can be |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
734 |
// changed with the flag -Xss |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
735 |
assert(JavaThread::stack_size_at_create() > 0, "this should be set"); |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
736 |
stack_size = JavaThread::stack_size_at_create(); |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
737 |
break; |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
738 |
case os::compiler_thread: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
739 |
if (CompilerThreadStackSize > 0) { |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
740 |
stack_size = (size_t)(CompilerThreadStackSize * K); |
1 | 741 |
break; |
32080
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
742 |
} // else fall through: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
743 |
// use VMThreadStackSize if CompilerThreadStackSize is not defined |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
744 |
case os::vm_thread: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
745 |
case os::pgc_thread: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
746 |
case os::cgc_thread: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
747 |
case os::watcher_thread: |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
748 |
if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
749 |
break; |
1 | 750 |
} |
32080
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
751 |
} |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
752 |
|
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
753 |
stack_size = MAX2(stack_size, os::Linux::min_stack_allowed); |
9d2ace436482
8080298: Clean up os::...::supports_variable_stack_size()
dholmes
parents:
32070
diff
changeset
|
754 |
pthread_attr_setstacksize(&attr, stack_size); |
1 | 755 |
|
756 |
// glibc guard page |
|
757 |
pthread_attr_setguardsize(&attr, os::Linux::default_guard_size(thr_type)); |
|
758 |
||
759 |
ThreadState state; |
|
760 |
||
761 |
{ |
|
762 |
pthread_t tid; |
|
763 |
int ret = pthread_create(&tid, &attr, (void* (*)(void*)) java_start, thread); |
|
764 |
||
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
765 |
char buf[64]; |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
766 |
if (ret == 0) { |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
767 |
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
|
768 |
(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
|
769 |
} else { |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
770 |
log_warning(os, thread)("Failed to start thread - pthread_create failed (%s) for attributes: %s.", |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
771 |
strerror(ret), 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
|
772 |
} |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
773 |
|
1 | 774 |
pthread_attr_destroy(&attr); |
775 |
||
776 |
if (ret != 0) { |
|
777 |
// Need to clean up stuff we've allocated so far |
|
778 |
thread->set_osthread(NULL); |
|
779 |
delete osthread; |
|
780 |
return false; |
|
781 |
} |
|
782 |
||
783 |
// Store pthread info into the OSThread |
|
784 |
osthread->set_pthread_id(tid); |
|
785 |
||
786 |
// Wait until child thread is either initialized or aborted |
|
787 |
{ |
|
788 |
Monitor* sync_with_child = osthread->startThread_lock(); |
|
789 |
MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag); |
|
790 |
while ((state = osthread->get_state()) == ALLOCATED) { |
|
791 |
sync_with_child->wait(Mutex::_no_safepoint_check_flag); |
|
792 |
} |
|
793 |
} |
|
794 |
} |
|
795 |
||
796 |
// Aborted due to thread limit being reached |
|
797 |
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
|
798 |
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
|
799 |
delete osthread; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
800 |
return false; |
1 | 801 |
} |
802 |
||
803 |
// The thread is returned suspended (in state INITIALIZED), |
|
804 |
// and is started higher up in the call chain |
|
805 |
assert(state == INITIALIZED, "race condition"); |
|
806 |
return true; |
|
807 |
} |
|
808 |
||
809 |
///////////////////////////////////////////////////////////////////////////// |
|
810 |
// attach existing thread |
|
811 |
||
812 |
// bootstrap the main thread |
|
813 |
bool os::create_main_thread(JavaThread* thread) { |
|
814 |
assert(os::Linux::_main_thread == pthread_self(), "should be called inside main thread"); |
|
815 |
return create_attached_thread(thread); |
|
816 |
} |
|
817 |
||
818 |
bool os::create_attached_thread(JavaThread* thread) { |
|
819 |
#ifdef ASSERT |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
820 |
thread->verify_not_published(); |
1 | 821 |
#endif |
822 |
||
823 |
// Allocate the OSThread object |
|
824 |
OSThread* osthread = new OSThread(NULL, NULL); |
|
825 |
||
826 |
if (osthread == NULL) { |
|
827 |
return false; |
|
828 |
} |
|
829 |
||
830 |
// Store pthread info into the OSThread |
|
831 |
osthread->set_thread_id(os::Linux::gettid()); |
|
832 |
osthread->set_pthread_id(::pthread_self()); |
|
833 |
||
834 |
// initialize floating point control register |
|
835 |
os::Linux::init_thread_fpu_state(); |
|
836 |
||
837 |
// Initial thread state is RUNNABLE |
|
838 |
osthread->set_state(RUNNABLE); |
|
839 |
||
840 |
thread->set_osthread(osthread); |
|
841 |
||
842 |
if (UseNUMA) { |
|
843 |
int lgrp_id = os::numa_get_group_id(); |
|
844 |
if (lgrp_id != -1) { |
|
845 |
thread->set_lgrp_id(lgrp_id); |
|
846 |
} |
|
847 |
} |
|
848 |
||
849 |
if (os::Linux::is_initial_thread()) { |
|
850 |
// If current thread is initial thread, its stack is mapped on demand, |
|
851 |
// see notes about MAP_GROWSDOWN. Here we try to force kernel to map |
|
852 |
// the entire stack region to avoid SEGV in stack banging. |
|
853 |
// It is also useful to get around the heap-stack-gap problem on SuSE |
|
854 |
// kernel (see 4821821 for details). We first expand stack to the top |
|
855 |
// of yellow zone, then enable stack yellow zone (order is significant, |
|
856 |
// enabling yellow zone first will crash JVM on SuSE Linux), so there |
|
857 |
// is no gap between the last two virtual memory regions. |
|
858 |
||
859 |
JavaThread *jt = (JavaThread *)thread; |
|
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
860 |
address addr = jt->stack_reserved_zone_base(); |
1 | 861 |
assert(addr != NULL, "initialization problem?"); |
862 |
assert(jt->stack_available(addr) > 0, "stack guard should not be enabled"); |
|
863 |
||
864 |
osthread->set_expanding_stack(); |
|
865 |
os::Linux::manually_expand_stack(jt, addr); |
|
866 |
osthread->clear_expanding_stack(); |
|
867 |
} |
|
868 |
||
869 |
// initialize signal mask for this thread |
|
870 |
// and save the caller's signal mask |
|
871 |
os::Linux::hotspot_sigmask(thread); |
|
872 |
||
36355
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
873 |
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
|
874 |
os::current_thread_id(), (uintx) pthread_self()); |
dd339cbafd31
8149036: Add tracing for thread related events at os level
stuefe
parents:
36096
diff
changeset
|
875 |
|
1 | 876 |
return true; |
877 |
} |
|
878 |
||
879 |
void os::pd_start_thread(Thread* thread) { |
|
880 |
OSThread * osthread = thread->osthread(); |
|
881 |
assert(osthread->get_state() != INITIALIZED, "just checking"); |
|
882 |
Monitor* sync_with_child = osthread->startThread_lock(); |
|
883 |
MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag); |
|
884 |
sync_with_child->notify(); |
|
885 |
} |
|
886 |
||
887 |
// Free Linux resources related to the OSThread |
|
888 |
void os::free_thread(OSThread* osthread) { |
|
889 |
assert(osthread != NULL, "osthread not set"); |
|
890 |
||
891 |
if (Thread::current()->osthread() == osthread) { |
|
892 |
// Restore caller's signal mask |
|
893 |
sigset_t sigmask = osthread->caller_sigmask(); |
|
894 |
pthread_sigmask(SIG_SETMASK, &sigmask, NULL); |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
895 |
} |
1 | 896 |
|
897 |
delete osthread; |
|
898 |
} |
|
899 |
||
900 |
////////////////////////////////////////////////////////////////////////////// |
|
901 |
// initial thread |
|
902 |
||
903 |
// Check if current thread is the initial thread, similar to Solaris thr_main. |
|
904 |
bool os::Linux::is_initial_thread(void) { |
|
905 |
char dummy; |
|
906 |
// If called before init complete, thread stack bottom will be null. |
|
907 |
// Can be called if fatal error occurs before initialization. |
|
908 |
if (initial_thread_stack_bottom() == NULL) return false; |
|
909 |
assert(initial_thread_stack_bottom() != NULL && |
|
910 |
initial_thread_stack_size() != 0, |
|
911 |
"os::init did not locate initial thread's stack region"); |
|
912 |
if ((address)&dummy >= initial_thread_stack_bottom() && |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
913 |
(address)&dummy < initial_thread_stack_bottom() + 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
|
914 |
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
|
915 |
} else { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
916 |
return false; |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
917 |
} |
1 | 918 |
} |
919 |
||
920 |
// Find the virtual memory area that contains addr |
|
921 |
static bool find_vma(address addr, address* vma_low, address* vma_high) { |
|
922 |
FILE *fp = fopen("/proc/self/maps", "r"); |
|
923 |
if (fp) { |
|
924 |
address low, high; |
|
925 |
while (!feof(fp)) { |
|
926 |
if (fscanf(fp, "%p-%p", &low, &high) == 2) { |
|
927 |
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
|
928 |
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
|
929 |
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
|
930 |
fclose(fp); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
931 |
return true; |
1 | 932 |
} |
933 |
} |
|
934 |
for (;;) { |
|
935 |
int ch = fgetc(fp); |
|
936 |
if (ch == EOF || ch == (int)'\n') break; |
|
937 |
} |
|
938 |
} |
|
939 |
fclose(fp); |
|
940 |
} |
|
941 |
return false; |
|
942 |
} |
|
943 |
||
944 |
// Locate initial thread stack. This special handling of initial thread stack |
|
945 |
// is needed because pthread_getattr_np() on most (all?) Linux distros returns |
|
946 |
// bogus value for initial thread. |
|
947 |
void os::Linux::capture_initial_stack(size_t max_size) { |
|
948 |
// stack size is the easy part, get it from RLIMIT_STACK |
|
949 |
size_t stack_size; |
|
950 |
struct rlimit rlim; |
|
951 |
getrlimit(RLIMIT_STACK, &rlim); |
|
952 |
stack_size = rlim.rlim_cur; |
|
953 |
||
954 |
// 6308388: a bug in ld.so will relocate its own .data section to the |
|
955 |
// lower end of primordial stack; reduce ulimit -s value a little bit |
|
956 |
// so we won't install guard page on ld.so's data section. |
|
957 |
stack_size -= 2 * page_size(); |
|
958 |
||
959 |
// 4441425: avoid crash with "unlimited" stack size on SuSE 7.1 or Redhat |
|
960 |
// 7.1, in both cases we will get 2G in return value. |
|
961 |
// 4466587: glibc 2.2.x compiled w/o "--enable-kernel=2.4.0" (RH 7.0, |
|
962 |
// SuSE 7.2, Debian) can not handle alternate signal stack correctly |
|
963 |
// for initial thread if its stack size exceeds 6M. Cap it at 2M, |
|
964 |
// in case other parts in glibc still assumes 2M max stack size. |
|
965 |
// FIXME: alt signal stack is gone, maybe we can relax this constraint? |
|
966 |
// Problem still exists RH7.2 (IA64 anyway) but 2MB is a little small |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
967 |
if (stack_size > 2 * K * K IA64_ONLY(*2)) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
968 |
stack_size = 2 * K * K IA64_ONLY(*2); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
969 |
} |
1 | 970 |
// Try to figure out where the stack base (top) is. This is harder. |
971 |
// |
|
972 |
// When an application is started, glibc saves the initial stack pointer in |
|
973 |
// a global variable "__libc_stack_end", which is then used by system |
|
974 |
// libraries. __libc_stack_end should be pretty close to stack top. The |
|
975 |
// variable is available since the very early days. However, because it is |
|
976 |
// a private interface, it could disappear in the future. |
|
977 |
// |
|
978 |
// Linux kernel saves start_stack information in /proc/<pid>/stat. Similar |
|
979 |
// to __libc_stack_end, it is very close to stack top, but isn't the real |
|
980 |
// stack top. Note that /proc may not exist if VM is running as a chroot |
|
981 |
// program, so reading /proc/<pid>/stat could fail. Also the contents of |
|
982 |
// /proc/<pid>/stat could change in the future (though unlikely). |
|
983 |
// |
|
984 |
// We try __libc_stack_end first. If that doesn't work, look for |
|
985 |
// /proc/<pid>/stat. If neither of them works, we use current stack pointer |
|
986 |
// as a hint, which should work well in most cases. |
|
987 |
||
988 |
uintptr_t stack_start; |
|
989 |
||
990 |
// try __libc_stack_end first |
|
991 |
uintptr_t *p = (uintptr_t *)dlsym(RTLD_DEFAULT, "__libc_stack_end"); |
|
992 |
if (p && *p) { |
|
993 |
stack_start = *p; |
|
994 |
} else { |
|
995 |
// see if we can get the start_stack field from /proc/self/stat |
|
996 |
FILE *fp; |
|
997 |
int pid; |
|
998 |
char state; |
|
999 |
int ppid; |
|
1000 |
int pgrp; |
|
1001 |
int session; |
|
1002 |
int nr; |
|
1003 |
int tpgrp; |
|
1004 |
unsigned long flags; |
|
1005 |
unsigned long minflt; |
|
1006 |
unsigned long cminflt; |
|
1007 |
unsigned long majflt; |
|
1008 |
unsigned long cmajflt; |
|
1009 |
unsigned long utime; |
|
1010 |
unsigned long stime; |
|
1011 |
long cutime; |
|
1012 |
long cstime; |
|
1013 |
long prio; |
|
1014 |
long nice; |
|
1015 |
long junk; |
|
1016 |
long it_real; |
|
1017 |
uintptr_t start; |
|
1018 |
uintptr_t vsize; |
|
6176
4d9030fe341f
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bobv
parents:
5922
diff
changeset
|
1019 |
intptr_t rss; |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1020 |
uintptr_t rsslim; |
1 | 1021 |
uintptr_t scodes; |
1022 |
uintptr_t ecode; |
|
1023 |
int i; |
|
1024 |
||
1025 |
// Figure what the primordial thread stack base is. Code is inspired |
|
1026 |
// by email from Hans Boehm. /proc/self/stat begins with current pid, |
|
1027 |
// followed by command name surrounded by parentheses, state, etc. |
|
1028 |
char stat[2048]; |
|
1029 |
int statlen; |
|
1030 |
||
1031 |
fp = fopen("/proc/self/stat", "r"); |
|
1032 |
if (fp) { |
|
1033 |
statlen = fread(stat, 1, 2047, fp); |
|
1034 |
stat[statlen] = '\0'; |
|
1035 |
fclose(fp); |
|
1036 |
||
1037 |
// Skip pid and the command string. Note that we could be dealing with |
|
1038 |
// weird command names, e.g. user could decide to rename java launcher |
|
1039 |
// to "java 1.4.2 :)", then the stat file would look like |
|
1040 |
// 1234 (java 1.4.2 :)) R ... ... |
|
1041 |
// We don't really need to know the command string, just find the last |
|
1042 |
// occurrence of ")" and then start parsing from there. See bug 4726580. |
|
1043 |
char * s = strrchr(stat, ')'); |
|
1044 |
||
1045 |
i = 0; |
|
1046 |
if (s) { |
|
1047 |
// Skip blank chars |
|
27471 | 1048 |
do { s++; } while (s && isspace(*s)); |
1 | 1049 |
|
6176
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bobv
parents:
5922
diff
changeset
|
1050 |
#define _UFM UINTX_FORMAT |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1051 |
#define _DFM INTX_FORMAT |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1052 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1053 |
// 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
|
1054 |
// 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
|
1055 |
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
|
1056 |
&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
|
1057 |
&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
|
1058 |
&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
|
1059 |
&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
|
1060 |
&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
|
1061 |
&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
|
1062 |
&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
|
1063 |
&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
|
1064 |
&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
|
1065 |
&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
|
1066 |
&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
|
1067 |
&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
|
1068 |
&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
|
1069 |
&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
|
1070 |
&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
|
1071 |
&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
|
1072 |
&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
|
1073 |
&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
|
1074 |
&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
|
1075 |
&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
|
1076 |
&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
|
1077 |
&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
|
1078 |
&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
|
1079 |
&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
|
1080 |
&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
|
1081 |
&stack_start); // 28 UINTX_FORMAT |
1 | 1082 |
} |
1083 |
||
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1084 |
#undef _UFM |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1085 |
#undef _DFM |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
1086 |
|
1 | 1087 |
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
|
1088 |
assert(false, "Bad conversion from /proc/self/stat"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1089 |
// product mode - assume we are the initial thread, good luck in the |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1090 |
// embedded case. |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1091 |
warning("Can't detect initial thread stack location - bad conversion"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1092 |
stack_start = (uintptr_t) &rlim; |
1 | 1093 |
} |
1094 |
} else { |
|
1095 |
// For some reason we can't open /proc/self/stat (for example, running on |
|
1096 |
// FreeBSD with a Linux emulator, or inside chroot), this should work for |
|
1097 |
// most cases, so don't abort: |
|
1098 |
warning("Can't detect initial thread stack location - no /proc/self/stat"); |
|
1099 |
stack_start = (uintptr_t) &rlim; |
|
1100 |
} |
|
1101 |
} |
|
1102 |
||
1103 |
// Now we have a pointer (stack_start) very close to the stack top, the |
|
1104 |
// next thing to do is to figure out the exact location of stack top. We |
|
1105 |
// can find out the virtual memory area that contains stack_start by |
|
1106 |
// reading /proc/self/maps, it should be the last vma in /proc/self/maps, |
|
1107 |
// and its upper limit is the real stack top. (again, this would fail if |
|
1108 |
// running inside chroot, because /proc may not exist.) |
|
1109 |
||
1110 |
uintptr_t stack_top; |
|
1111 |
address low, high; |
|
1112 |
if (find_vma((address)stack_start, &low, &high)) { |
|
1113 |
// success, "high" is the true stack top. (ignore "low", because initial |
|
1114 |
// thread stack grows on demand, its real bottom is high - RLIMIT_STACK.) |
|
1115 |
stack_top = (uintptr_t)high; |
|
1116 |
} else { |
|
1117 |
// failed, likely because /proc/self/maps does not exist |
|
1118 |
warning("Can't detect initial thread stack location - find_vma failed"); |
|
1119 |
// best effort: stack_start is normally within a few pages below the real |
|
1120 |
// stack top, use it as stack top, and reduce stack size so we won't put |
|
1121 |
// guard page outside stack. |
|
1122 |
stack_top = stack_start; |
|
1123 |
stack_size -= 16 * page_size(); |
|
1124 |
} |
|
1125 |
||
1126 |
// stack_top could be partially down the page so align it |
|
1127 |
stack_top = align_size_up(stack_top, page_size()); |
|
1128 |
||
1129 |
if (max_size && stack_size > max_size) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1130 |
_initial_thread_stack_size = max_size; |
1 | 1131 |
} else { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1132 |
_initial_thread_stack_size = stack_size; |
1 | 1133 |
} |
1134 |
||
1135 |
_initial_thread_stack_size = align_size_down(_initial_thread_stack_size, page_size()); |
|
1136 |
_initial_thread_stack_bottom = (address)stack_top - _initial_thread_stack_size; |
|
1137 |
} |
|
1138 |
||
1139 |
//////////////////////////////////////////////////////////////////////////////// |
|
1140 |
// time support |
|
1141 |
||
1142 |
// Time since start-up in seconds to a fine granularity. |
|
1143 |
// Used by VMSelfDestructTimer and the MemProfiler. |
|
1144 |
double os::elapsedTime() { |
|
1145 |
||
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
1146 |
return ((double)os::elapsed_counter()) / os::elapsed_frequency(); // nanosecond resolution |
1 | 1147 |
} |
1148 |
||
1149 |
jlong os::elapsed_counter() { |
|
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
1150 |
return javaTimeNanos() - initial_time_count; |
1 | 1151 |
} |
1152 |
||
1153 |
jlong os::elapsed_frequency() { |
|
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
1154 |
return NANOSECS_PER_SEC; // nanosecond resolution |
1 | 1155 |
} |
1156 |
||
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1157 |
bool os::supports_vtime() { return true; } |
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1158 |
bool os::enable_vtime() { return false; } |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1159 |
bool os::vtime_enabled() { return false; } |
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1160 |
|
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1161 |
double os::elapsedVTime() { |
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1162 |
struct rusage usage; |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1163 |
int retval = getrusage(RUSAGE_THREAD, &usage); |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1164 |
if (retval == 0) { |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1165 |
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
|
1166 |
} else { |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1167 |
// better than nothing, but not much |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1168 |
return elapsedTime(); |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17134
diff
changeset
|
1169 |
} |
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1170 |
} |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
1171 |
|
234 | 1172 |
jlong os::javaTimeMillis() { |
1 | 1173 |
timeval time; |
1174 |
int status = gettimeofday(&time, NULL); |
|
1175 |
assert(status != -1, "linux error"); |
|
1176 |
return jlong(time.tv_sec) * 1000 + jlong(time.tv_usec / 1000); |
|
1177 |
} |
|
1178 |
||
28737
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1179 |
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
|
1180 |
timeval time; |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1181 |
int status = gettimeofday(&time, NULL); |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1182 |
assert(status != -1, "linux error"); |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1183 |
seconds = jlong(time.tv_sec); |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1184 |
nanos = jlong(time.tv_usec) * 1000; |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1185 |
} |
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1186 |
|
ca4b6a6e5cc8
8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
dfuchs
parents:
28172
diff
changeset
|
1187 |
|
1 | 1188 |
#ifndef CLOCK_MONOTONIC |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1189 |
#define CLOCK_MONOTONIC (1) |
1 | 1190 |
#endif |
1191 |
||
1192 |
void os::Linux::clock_init() { |
|
1193 |
// we do dlopen's in this particular order due to bug in linux |
|
1194 |
// dynamical loader (see 6348968) leading to crash on exit |
|
1195 |
void* handle = dlopen("librt.so.1", RTLD_LAZY); |
|
1196 |
if (handle == NULL) { |
|
1197 |
handle = dlopen("librt.so", RTLD_LAZY); |
|
1198 |
} |
|
1199 |
||
1200 |
if (handle) { |
|
1201 |
int (*clock_getres_func)(clockid_t, struct timespec*) = |
|
1202 |
(int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_getres"); |
|
1203 |
int (*clock_gettime_func)(clockid_t, struct timespec*) = |
|
1204 |
(int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_gettime"); |
|
1205 |
if (clock_getres_func && clock_gettime_func) { |
|
1206 |
// See if monotonic clock is supported by the kernel. Note that some |
|
1207 |
// early implementations simply return kernel jiffies (updated every |
|
1208 |
// 1/100 or 1/1000 second). It would be bad to use such a low res clock |
|
1209 |
// for nano time (though the monotonic property is still nice to have). |
|
1210 |
// It's fixed in newer kernels, however clock_getres() still returns |
|
1211 |
// 1/HZ. We check if clock_getres() works, but will ignore its reported |
|
1212 |
// resolution for now. Hopefully as people move to new kernels, this |
|
1213 |
// won't be a problem. |
|
1214 |
struct timespec res; |
|
1215 |
struct timespec tp; |
|
1216 |
if (clock_getres_func (CLOCK_MONOTONIC, &res) == 0 && |
|
1217 |
clock_gettime_func(CLOCK_MONOTONIC, &tp) == 0) { |
|
1218 |
// yes, monotonic clock is supported |
|
1219 |
_clock_gettime = clock_gettime_func; |
|
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
1220 |
return; |
1 | 1221 |
} else { |
1222 |
// close librt if there is no monotonic clock |
|
1223 |
dlclose(handle); |
|
1224 |
} |
|
1225 |
} |
|
1226 |
} |
|
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
1227 |
warning("No monotonic clock was available - timed services may " \ |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
1228 |
"be adversely affected if the time-of-day clock changes"); |
1 | 1229 |
} |
1230 |
||
1231 |
#ifndef SYS_clock_getres |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1232 |
#if defined(IA32) || defined(AMD64) |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1233 |
#define SYS_clock_getres IA32_ONLY(266) AMD64_ONLY(229) |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1234 |
#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y) |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1235 |
#else |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1236 |
#warning "SYS_clock_getres not defined for this platform, disabling fast_thread_cpu_time" |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1237 |
#define sys_clock_getres(x,y) -1 |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1238 |
#endif |
1 | 1239 |
#else |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1240 |
#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y) |
1 | 1241 |
#endif |
1242 |
||
1243 |
void os::Linux::fast_thread_clock_init() { |
|
1244 |
if (!UseLinuxPosixThreadCPUClocks) { |
|
1245 |
return; |
|
1246 |
} |
|
1247 |
clockid_t clockid; |
|
1248 |
struct timespec tp; |
|
1249 |
int (*pthread_getcpuclockid_func)(pthread_t, clockid_t *) = |
|
1250 |
(int(*)(pthread_t, clockid_t *)) dlsym(RTLD_DEFAULT, "pthread_getcpuclockid"); |
|
1251 |
||
1252 |
// Switch to using fast clocks for thread cpu time if |
|
1253 |
// the sys_clock_getres() returns 0 error code. |
|
1254 |
// Note, that some kernels may support the current thread |
|
1255 |
// clock (CLOCK_THREAD_CPUTIME_ID) but not the clocks |
|
1256 |
// returned by the pthread_getcpuclockid(). |
|
1257 |
// If the fast Posix clocks are supported then the sys_clock_getres() |
|
1258 |
// must return at least tp.tv_sec == 0 which means a resolution |
|
1259 |
// better than 1 sec. This is extra check for reliability. |
|
1260 |
||
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
1261 |
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
|
1262 |
pthread_getcpuclockid_func(_main_thread, &clockid) == 0 && |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1263 |
sys_clock_getres(clockid, &tp) == 0 && tp.tv_sec == 0) { |
1 | 1264 |
_supports_fast_thread_cpu_time = true; |
1265 |
_pthread_getcpuclockid = pthread_getcpuclockid_func; |
|
1266 |
} |
|
1267 |
} |
|
1268 |
||
1269 |
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
|
1270 |
if (os::supports_monotonic_clock()) { |
1 | 1271 |
struct timespec tp; |
1272 |
int status = Linux::clock_gettime(CLOCK_MONOTONIC, &tp); |
|
1273 |
assert(status == 0, "gettime error"); |
|
1274 |
jlong result = jlong(tp.tv_sec) * (1000 * 1000 * 1000) + jlong(tp.tv_nsec); |
|
1275 |
return result; |
|
1276 |
} else { |
|
1277 |
timeval time; |
|
1278 |
int status = gettimeofday(&time, NULL); |
|
1279 |
assert(status != -1, "linux error"); |
|
1280 |
jlong usecs = jlong(time.tv_sec) * (1000 * 1000) + jlong(time.tv_usec); |
|
1281 |
return 1000 * usecs; |
|
1282 |
} |
|
1283 |
} |
|
1284 |
||
1285 |
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
|
1286 |
if (os::supports_monotonic_clock()) { |
1 | 1287 |
info_ptr->max_value = ALL_64_BITS; |
1288 |
||
1289 |
// CLOCK_MONOTONIC - amount of time since some arbitrary point in the past |
|
1290 |
info_ptr->may_skip_backward = false; // not subject to resetting or drifting |
|
1291 |
info_ptr->may_skip_forward = false; // not subject to resetting or drifting |
|
1292 |
} else { |
|
1293 |
// gettimeofday - based on time in seconds since the Epoch thus does not wrap |
|
1294 |
info_ptr->max_value = ALL_64_BITS; |
|
1295 |
||
1296 |
// gettimeofday is a real time clock so it skips |
|
1297 |
info_ptr->may_skip_backward = true; |
|
1298 |
info_ptr->may_skip_forward = true; |
|
1299 |
} |
|
1300 |
||
1301 |
info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time |
|
1302 |
} |
|
1303 |
||
1304 |
// Return the real, user, and system times in seconds from an |
|
1305 |
// arbitrary fixed point in the past. |
|
1306 |
bool os::getTimesSecs(double* process_real_time, |
|
1307 |
double* process_user_time, |
|
1308 |
double* process_system_time) { |
|
1309 |
struct tms ticks; |
|
1310 |
clock_t real_ticks = times(&ticks); |
|
1311 |
||
1312 |
if (real_ticks == (clock_t) (-1)) { |
|
1313 |
return false; |
|
1314 |
} else { |
|
1315 |
double ticks_per_second = (double) clock_tics_per_sec; |
|
1316 |
*process_user_time = ((double) ticks.tms_utime) / ticks_per_second; |
|
1317 |
*process_system_time = ((double) ticks.tms_stime) / ticks_per_second; |
|
1318 |
*process_real_time = ((double) real_ticks) / ticks_per_second; |
|
1319 |
||
1320 |
return true; |
|
1321 |
} |
|
1322 |
} |
|
1323 |
||
1324 |
||
1325 |
char * os::local_time_string(char *buf, size_t buflen) { |
|
1326 |
struct tm t; |
|
1327 |
time_t long_time; |
|
1328 |
time(&long_time); |
|
1329 |
localtime_r(&long_time, &t); |
|
1330 |
jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", |
|
1331 |
t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, |
|
1332 |
t.tm_hour, t.tm_min, t.tm_sec); |
|
1333 |
return buf; |
|
1334 |
} |
|
1335 |
||
2012
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1336 |
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
|
1337 |
return localtime_r(clock, res); |
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1338 |
} |
041fbc6030dd
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
1892
diff
changeset
|
1339 |
|
1 | 1340 |
//////////////////////////////////////////////////////////////////////////////// |
1341 |
// runtime exit support |
|
1342 |
||
1343 |
// Note: os::shutdown() might be called very early during initialization, or |
|
1344 |
// called from signal handler. Before adding something to os::shutdown(), make |
|
1345 |
// sure it is async-safe and can handle partially initialized VM. |
|
1346 |
void os::shutdown() { |
|
1347 |
||
1348 |
// allow PerfMemory to attempt cleanup of any persistent resources |
|
1349 |
perfMemory_exit(); |
|
1350 |
||
1351 |
// needs to remove object in file system |
|
1352 |
AttachListener::abort(); |
|
1353 |
||
1354 |
// flush buffered output, finish log files |
|
1355 |
ostream_abort(); |
|
1356 |
||
1357 |
// Check for abort hook |
|
1358 |
abort_hook_t abort_hook = Arguments::abort_hook(); |
|
1359 |
if (abort_hook != NULL) { |
|
1360 |
abort_hook(); |
|
1361 |
} |
|
1362 |
||
1363 |
} |
|
1364 |
||
1365 |
// Note: os::abort() might be called very early during initialization, or |
|
1366 |
// called from signal handler. Before adding something to os::abort(), make |
|
1367 |
// 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
|
1368 |
void os::abort(bool dump_core, void* siginfo, const void* context) { |
1 | 1369 |
os::shutdown(); |
1370 |
if (dump_core) { |
|
1371 |
#ifndef PRODUCT |
|
1372 |
fdStream out(defaultStream::output_fd()); |
|
1373 |
out.print_raw("Current thread is "); |
|
1374 |
char buf[16]; |
|
1375 |
jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); |
|
1376 |
out.print_raw_cr(buf); |
|
1377 |
out.print_raw_cr("Dumping core ..."); |
|
1378 |
#endif |
|
1379 |
::abort(); // dump core |
|
1380 |
} |
|
1381 |
||
1382 |
::exit(1); |
|
1383 |
} |
|
1384 |
||
1385 |
// Die immediately, no exit hook, no abort hook, no cleanup. |
|
1386 |
void os::die() { |
|
1387 |
::abort(); |
|
1388 |
} |
|
1389 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1390 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1391 |
// This method is a copy of JDK's sysGetLastErrorString |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1392 |
// from src/solaris/hpi/src/system_md.c |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1393 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1394 |
size_t os::lasterror(char *buf, size_t len) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1395 |
if (errno == 0) return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1396 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1397 |
const char *s = ::strerror(errno); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1398 |
size_t n = ::strlen(s); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1399 |
if (n >= len) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1400 |
n = len - 1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1401 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1402 |
::strncpy(buf, s, n); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1403 |
buf[n] = '\0'; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1404 |
return n; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1405 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1406 |
|
32070
8f5a14b884e2
6661889: thread id on Linux is inconsistent in error and log outputs
jmanson
parents:
31963
diff
changeset
|
1407 |
// 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
|
1408 |
intx os::current_thread_id() { return os::Linux::gettid(); } |
1 | 1409 |
int os::current_process_id() { |
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
1410 |
return ::getpid(); |
1 | 1411 |
} |
1412 |
||
1413 |
// DLL functions |
|
1414 |
||
1415 |
const char* os::dll_file_extension() { return ".so"; } |
|
1416 |
||
7901
ea3d83447861
7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
parents:
7458
diff
changeset
|
1417 |
// 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
|
1418 |
// 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
|
1419 |
const char* os::get_temp_directory() { return "/tmp"; } |
1 | 1420 |
|
2358 | 1421 |
static bool file_exists(const char* filename) { |
1422 |
struct stat statbuf; |
|
1423 |
if (filename == NULL || strlen(filename) == 0) { |
|
1424 |
return false; |
|
1425 |
} |
|
1426 |
return os::stat(filename, &statbuf) == 0; |
|
1427 |
} |
|
1428 |
||
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1429 |
bool os::dll_build_name(char* buffer, size_t buflen, |
2358 | 1430 |
const char* pname, const char* fname) { |
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1431 |
bool retval = false; |
2358 | 1432 |
// Copied from libhpi |
950 | 1433 |
const size_t pnamelen = pname ? strlen(pname) : 0; |
1434 |
||
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1435 |
// Return error on buffer overflow. |
950 | 1436 |
if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1437 |
return retval; |
950 | 1438 |
} |
1439 |
||
1440 |
if (pnamelen == 0) { |
|
2358 | 1441 |
snprintf(buffer, buflen, "lib%s.so", fname); |
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1442 |
retval = true; |
2358 | 1443 |
} else if (strchr(pname, *os::path_separator()) != NULL) { |
1444 |
int n; |
|
1445 |
char** pelements = split_path(pname, &n); |
|
16669
fb3397cee116
8006103: [parfait] Possible null pointer dereference at hotspot/src/os/linux/vm/os_linux.cpp; os_windows.cpp; os_solaris.cpp; os_bsd.cpp
ccheung
parents:
16438
diff
changeset
|
1446 |
if (pelements == NULL) { |
16672 | 1447 |
return false; |
16669
fb3397cee116
8006103: [parfait] Possible null pointer dereference at hotspot/src/os/linux/vm/os_linux.cpp; os_windows.cpp; os_solaris.cpp; os_bsd.cpp
ccheung
parents:
16438
diff
changeset
|
1448 |
} |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
1449 |
for (int i = 0; i < n; i++) { |
2358 | 1450 |
// Really shouldn't be NULL, but check can't hurt |
1451 |
if (pelements[i] == NULL || strlen(pelements[i]) == 0) { |
|
1452 |
continue; // skip the empty path values |
|
1453 |
} |
|
1454 |
snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); |
|
1455 |
if (file_exists(buffer)) { |
|
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1456 |
retval = true; |
2358 | 1457 |
break; |
1458 |
} |
|
1459 |
} |
|
1460 |
// release the storage |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
1461 |
for (int i = 0; i < n; i++) { |
2358 | 1462 |
if (pelements[i] != NULL) { |
27880
afb974a04396
8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents:
27474
diff
changeset
|
1463 |
FREE_C_HEAP_ARRAY(char, pelements[i]); |
2358 | 1464 |
} |
1465 |
} |
|
1466 |
if (pelements != NULL) { |
|
27880
afb974a04396
8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents:
27474
diff
changeset
|
1467 |
FREE_C_HEAP_ARRAY(char*, pelements); |
2358 | 1468 |
} |
950 | 1469 |
} else { |
2358 | 1470 |
snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); |
14471
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1471 |
retval = true; |
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1472 |
} |
f3a6b82e25cf
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
13932
diff
changeset
|
1473 |
return retval; |
950 | 1474 |
} |
1475 |
||
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
1476 |
// check if addr is inside libjvm.so |
1 | 1477 |
bool os::address_is_in_vm(address addr) { |
1478 |
static address libjvm_base_addr; |
|
1479 |
Dl_info dlinfo; |
|
1480 |
||
1481 |
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
|
1482 |
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
|
1483 |
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
|
1484 |
} |
1 | 1485 |
assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); |
1486 |
} |
|
1487 |
||
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1488 |
if (dladdr((void *)addr, &dlinfo) != 0) { |
1 | 1489 |
if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; |
1490 |
} |
|
1491 |
||
1492 |
return false; |
|
1493 |
} |
|
1494 |
||
1495 |
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
|
1496 |
int buflen, int *offset, |
a6ab7217b5cc
8079473: allow demangling to be optional in dll_address_to_function_name
bdelsart
parents:
31026
diff
changeset
|
1497 |
bool demangle) { |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1498 |
// 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
|
1499 |
assert(buf != NULL, "sanity check"); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1500 |
|
1 | 1501 |
Dl_info dlinfo; |
1502 |
||
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1503 |
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
|
1504 |
// 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
|
1505 |
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
|
1506 |
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
|
1507 |
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
|
1508 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1509 |
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
|
1510 |
return true; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1511 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1512 |
// 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
|
1513 |
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
|
1514 |
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
|
1515 |
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
|
1516 |
return true; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1517 |
} |
7447
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1518 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1519 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1520 |
|
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1521 |
buf[0] = '\0'; |
7447
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1522 |
if (offset != NULL) *offset = -1; |
32c42d627f41
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
7397
diff
changeset
|
1523 |
return false; |
1 | 1524 |
} |
1525 |
||
1526 |
struct _address_to_library_name { |
|
1527 |
address addr; // input : memory address |
|
1528 |
size_t buflen; // size of fname |
|
1529 |
char* fname; // output: library name |
|
1530 |
address base; // library base addr |
|
1531 |
}; |
|
1532 |
||
1533 |
static int address_to_library_name_callback(struct dl_phdr_info *info, |
|
1534 |
size_t size, void *data) { |
|
1535 |
int i; |
|
1536 |
bool found = false; |
|
1537 |
address libbase = NULL; |
|
1538 |
struct _address_to_library_name * d = (struct _address_to_library_name *)data; |
|
1539 |
||
1540 |
// iterate through all loadable segments |
|
1541 |
for (i = 0; i < info->dlpi_phnum; i++) { |
|
1542 |
address segbase = (address)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr); |
|
1543 |
if (info->dlpi_phdr[i].p_type == PT_LOAD) { |
|
1544 |
// base address of a library is the lowest address of its loaded |
|
1545 |
// segments. |
|
1546 |
if (libbase == NULL || libbase > segbase) { |
|
1547 |
libbase = segbase; |
|
1548 |
} |
|
1549 |
// see if 'addr' is within current segment |
|
1550 |
if (segbase <= d->addr && |
|
1551 |
d->addr < segbase + info->dlpi_phdr[i].p_memsz) { |
|
1552 |
found = true; |
|
1553 |
} |
|
1554 |
} |
|
1555 |
} |
|
1556 |
||
1557 |
// dlpi_name is NULL or empty if the ELF file is executable, return 0 |
|
1558 |
// so dll_address_to_library_name() can fall through to use dladdr() which |
|
1559 |
// can figure out executable name from argv[0]. |
|
1560 |
if (found && info->dlpi_name && info->dlpi_name[0]) { |
|
1561 |
d->base = libbase; |
|
1562 |
if (d->fname) { |
|
1563 |
jio_snprintf(d->fname, d->buflen, "%s", info->dlpi_name); |
|
1564 |
} |
|
1565 |
return 1; |
|
1566 |
} |
|
1567 |
return 0; |
|
1568 |
} |
|
1569 |
||
1570 |
bool os::dll_address_to_library_name(address addr, char* buf, |
|
1571 |
int buflen, int* offset) { |
|
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1572 |
// 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
|
1573 |
assert(buf != NULL, "sanity check"); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1574 |
|
1 | 1575 |
Dl_info dlinfo; |
1576 |
struct _address_to_library_name data; |
|
1577 |
||
1578 |
// There is a bug in old glibc dladdr() implementation that it could resolve |
|
1579 |
// to wrong library name if the .so file has a base address != NULL. Here |
|
1580 |
// we iterate through the program headers of all loaded libraries to find |
|
1581 |
// out which library 'addr' really belongs to. This workaround can be |
|
1582 |
// removed once the minimum requirement for glibc is moved to 2.3.x. |
|
1583 |
data.addr = addr; |
|
1584 |
data.fname = buf; |
|
1585 |
data.buflen = buflen; |
|
1586 |
data.base = NULL; |
|
1587 |
int rslt = dl_iterate_phdr(address_to_library_name_callback, (void *)&data); |
|
1588 |
||
1589 |
if (rslt) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1590 |
// 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
|
1591 |
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
|
1592 |
return true; |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1593 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1594 |
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
|
1595 |
if (dlinfo.dli_fname != NULL) { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1596 |
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
|
1597 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1598 |
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
|
1599 |
*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
|
1600 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1601 |
return true; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1602 |
} |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1603 |
|
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1604 |
buf[0] = '\0'; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1605 |
if (offset) *offset = -1; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
1606 |
return false; |
1 | 1607 |
} |
1608 |
||
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1609 |
// 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
|
1610 |
// 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
|
1611 |
// same architecture as Hotspot is running on |
1 | 1612 |
|
15926
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1613 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1614 |
// 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
|
1615 |
// 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
|
1616 |
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
|
1617 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1618 |
// 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
|
1619 |
// 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
|
1620 |
// 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
|
1621 |
// 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
|
1622 |
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
|
1623 |
private: |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1624 |
const char *_filename; |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1625 |
char *_ebuf; |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1626 |
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
|
1627 |
void *_lib; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1628 |
public: |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1629 |
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
|
1630 |
_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
|
1631 |
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
|
1632 |
void doit() { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1633 |
_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
|
1634 |
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
|
1635 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1636 |
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
|
1637 |
}; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1638 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1639 |
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
|
1640 |
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
|
1641 |
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
|
1642 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1643 |
// 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
|
1644 |
// 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
|
1645 |
// 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
|
1646 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1647 |
// 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
|
1648 |
if (os::uses_stack_guard_pages() && !os::Linux::_stack_is_executable) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1649 |
ElfFile ef(filename); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1650 |
if (!ef.specifies_noexecstack()) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1651 |
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
|
1652 |
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
|
1653 |
// 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
|
1654 |
// 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
|
1655 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1656 |
// This should happen only when you are building JDK7 using a very |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1657 |
// old version of JDK6 (e.g., with JPRT) and running test_gamma. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1658 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1659 |
// 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
|
1660 |
// this function returns, and will not do that again. |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1661 |
assert(Threads::first() == NULL, "no Java threads should exist yet."); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1662 |
} else { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1663 |
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
|
1664 |
"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
|
1665 |
"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
|
1666 |
"'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
|
1667 |
filename); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1668 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1669 |
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
|
1670 |
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
|
1671 |
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
|
1672 |
// 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
|
1673 |
// 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
|
1674 |
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
|
1675 |
} else { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1676 |
if (!LoadExecStackDllInVMThread) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1677 |
// 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
|
1678 |
// 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
|
1679 |
// 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
|
1680 |
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
|
1681 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1682 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1683 |
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
|
1684 |
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
|
1685 |
|
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1686 |
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
|
1687 |
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
|
1688 |
if (LoadExecStackDllInVMThread) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1689 |
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
|
1690 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1691 |
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
|
1692 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1693 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1694 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1695 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1696 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1697 |
if (!load_attempted) { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1698 |
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
|
1699 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1700 |
|
1 | 1701 |
if (result != NULL) { |
1702 |
// Successful loading |
|
1703 |
return result; |
|
1704 |
} |
|
1705 |
||
1706 |
Elf32_Ehdr elf_head; |
|
1707 |
int diag_msg_max_length=ebuflen-strlen(ebuf); |
|
1708 |
char* diag_msg_buf=ebuf+strlen(ebuf); |
|
1709 |
||
1710 |
if (diag_msg_max_length==0) { |
|
1711 |
// No more space in ebuf for additional diagnostics message |
|
1712 |
return NULL; |
|
1713 |
} |
|
1714 |
||
1715 |
||
1716 |
int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); |
|
1717 |
||
1718 |
if (file_descriptor < 0) { |
|
1719 |
// Can't open library, report dlerror() message |
|
1720 |
return NULL; |
|
1721 |
} |
|
1722 |
||
1723 |
bool failed_to_read_elf_head= |
|
1724 |
(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
|
1725 |
(::read(file_descriptor, &elf_head,sizeof(elf_head)))); |
1 | 1726 |
|
1727 |
::close(file_descriptor); |
|
1728 |
if (failed_to_read_elf_head) { |
|
1729 |
// file i/o error - report dlerror() msg |
|
1730 |
return NULL; |
|
1731 |
} |
|
1732 |
||
1733 |
typedef struct { |
|
1734 |
Elf32_Half code; // Actual value as defined in elf.h |
|
1735 |
Elf32_Half compat_class; // Compatibility of archs at VM's sense |
|
1736 |
char elf_class; // 32 or 64 bit |
|
1737 |
char endianess; // MSB or LSB |
|
1738 |
char* name; // String representation |
|
1739 |
} arch_t; |
|
1740 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1741 |
#ifndef EM_486 |
1 | 1742 |
#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
|
1743 |
#endif |
29180 | 1744 |
#ifndef EM_AARCH64 |
1745 |
#define EM_AARCH64 183 /* ARM AARCH64 */ |
|
1746 |
#endif |
|
1 | 1747 |
|
1748 |
static const arch_t arch_array[]={ |
|
1749 |
{EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, |
|
1750 |
{EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, |
|
1751 |
{EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, |
|
1752 |
{EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, |
|
1753 |
{EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, |
|
1754 |
{EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, |
|
1755 |
{EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, |
|
1756 |
{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
|
1757 |
#if defined(VM_LITTLE_ENDIAN) |
7e8719ce96ea
8036767: PPC64: Support for little endian execution model
kvn
parents:
23479
diff
changeset
|
1758 |
{EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2LSB, (char*)"Power PC 64"}, |
7e8719ce96ea
8036767: PPC64: Support for little endian execution model
kvn
parents:
23479
diff
changeset
|
1759 |
#else |
35075
ca79cbf3f106
8073139: PPC64: User-visible arch directory and os.arch value on ppc64le cause issues with Java tooling
asmundak
parents:
35071
diff
changeset
|
1760 |
{EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64 LE"}, |
23532
7e8719ce96ea
8036767: PPC64: Support for little endian execution model
kvn
parents:
23479
diff
changeset
|
1761 |
#endif |
4013 | 1762 |
{EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM"}, |
1763 |
{EM_S390, EM_S390, ELFCLASSNONE, ELFDATA2MSB, (char*)"IBM System/390"}, |
|
1764 |
{EM_ALPHA, EM_ALPHA, ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"}, |
|
1765 |
{EM_MIPS_RS3_LE, EM_MIPS_RS3_LE, ELFCLASS32, ELFDATA2LSB, (char*)"MIPSel"}, |
|
1766 |
{EM_MIPS, EM_MIPS, ELFCLASS32, ELFDATA2MSB, (char*)"MIPS"}, |
|
1767 |
{EM_PARISC, EM_PARISC, ELFCLASS32, ELFDATA2MSB, (char*)"PARISC"}, |
|
29180 | 1768 |
{EM_68K, EM_68K, ELFCLASS32, ELFDATA2MSB, (char*)"M68k"}, |
1769 |
{EM_AARCH64, EM_AARCH64, ELFCLASS64, ELFDATA2LSB, (char*)"AARCH64"}, |
|
1 | 1770 |
}; |
1771 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1772 |
#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
|
1773 |
static Elf32_Half running_arch_code=EM_386; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1774 |
#elif (defined AMD64) |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1775 |
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
|
1776 |
#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
|
1777 |
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
|
1778 |
#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
|
1779 |
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
|
1780 |
#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
|
1781 |
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
|
1782 |
#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
|
1783 |
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
|
1784 |
#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
|
1785 |
static Elf32_Half running_arch_code=EM_PPC; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
1786 |
#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
|
1787 |
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
|
1788 |
#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
|
1789 |
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
|
1790 |
#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
|
1791 |
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
|
1792 |
#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
|
1793 |
static Elf32_Half running_arch_code=EM_MIPS_RS3_LE; |
26684
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changeset
|
1794 |
#elif (defined PARISC) |
26683
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changeset
|
1795 |
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
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parents:
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changeset
|
1796 |
#elif (defined MIPS) |
26683
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changeset
|
1797 |
static Elf32_Half running_arch_code=EM_MIPS; |
26684
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diff
changeset
|
1798 |
#elif (defined M68K) |
26683
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changeset
|
1799 |
static Elf32_Half running_arch_code=EM_68K; |
29180 | 1800 |
#elif (defined AARCH64) |
1801 |
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
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parents:
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changeset
|
1802 |
#else |
1 | 1803 |
#error Method os::dll_load requires that one of following is defined:\ |
29180 | 1804 |
IA32, AMD64, IA64, __sparc, __powerpc__, ARM, S390, ALPHA, MIPS, MIPSEL, PARISC, M68K, AARCH64 |
26684
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parents:
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diff
changeset
|
1805 |
#endif |
1 | 1806 |
|
1807 |
// Identify compatability class for VM's architecture and library's architecture |
|
1808 |
// Obtain string descriptions for architectures |
|
1809 |
||
1810 |
arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; |
|
1811 |
int running_arch_index=-1; |
|
1812 |
||
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
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diff
changeset
|
1813 |
for (unsigned int i=0; i < ARRAY_SIZE(arch_array); i++) { |
1 | 1814 |
if (running_arch_code == arch_array[i].code) { |
1815 |
running_arch_index = i; |
|
1816 |
} |
|
1817 |
if (lib_arch.code == arch_array[i].code) { |
|
1818 |
lib_arch.compat_class = arch_array[i].compat_class; |
|
1819 |
lib_arch.name = arch_array[i].name; |
|
1820 |
} |
|
1821 |
} |
|
1822 |
||
1823 |
assert(running_arch_index != -1, |
|
26683
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changeset
|
1824 |
"Didn't find running architecture code (running_arch_code) in arch_array"); |
1 | 1825 |
if (running_arch_index == -1) { |
1826 |
// Even though running architecture detection failed |
|
1827 |
// we may still continue with reporting dlerror() message |
|
1828 |
return NULL; |
|
1829 |
} |
|
1830 |
||
1831 |
if (lib_arch.endianess != arch_array[running_arch_index].endianess) { |
|
1832 |
::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); |
|
1833 |
return NULL; |
|
1834 |
} |
|
1835 |
||
4013 | 1836 |
#ifndef S390 |
1 | 1837 |
if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { |
1838 |
::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); |
|
1839 |
return NULL; |
|
1840 |
} |
|
4013 | 1841 |
#endif // !S390 |
1 | 1842 |
|
1843 |
if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
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changeset
|
1844 |
if (lib_arch.name!=NULL) { |
1 | 1845 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, |
26683
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parents:
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diff
changeset
|
1846 |
" (Possible cause: can't load %s-bit .so on a %s-bit platform)", |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
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parents:
26135
diff
changeset
|
1847 |
lib_arch.name, arch_array[running_arch_index].name); |
1 | 1848 |
} else { |
1849 |
::snprintf(diag_msg_buf, diag_msg_max_length-1, |
|
26683
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changeset
|
1850 |
" (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
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parents:
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changeset
|
1851 |
lib_arch.code, |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1852 |
arch_array[running_arch_index].name); |
1 | 1853 |
} |
1854 |
} |
|
1855 |
||
1856 |
return NULL; |
|
1857 |
} |
|
1858 |
||
26684
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parents:
26683
diff
changeset
|
1859 |
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
|
1860 |
int ebuflen) { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
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diff
changeset
|
1861 |
void * result = ::dlopen(filename, RTLD_LAZY); |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
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diff
changeset
|
1862 |
if (result == NULL) { |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1863 |
::strncpy(ebuf, ::dlerror(), ebuflen - 1); |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1864 |
ebuf[ebuflen-1] = '\0'; |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1865 |
} |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1866 |
return result; |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
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diff
changeset
|
1867 |
} |
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1868 |
|
26684
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parents:
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diff
changeset
|
1869 |
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:
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diff
changeset
|
1870 |
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
|
1871 |
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
|
1872 |
if (LoadExecStackDllInVMThread) { |
16438
245d5c0a8dd8
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
15927
diff
changeset
|
1873 |
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:
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diff
changeset
|
1874 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1875 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1876 |
// 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
|
1877 |
// 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
|
1878 |
// 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
|
1879 |
// 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
|
1880 |
// |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1881 |
// 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
|
1882 |
// 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
|
1883 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1884 |
if (!_stack_is_executable) { |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1885 |
JavaThread *jt = Threads::first(); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1886 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1887 |
while (jt) { |
35071
a0910b1d3e0d
8046936: JEP 270: Reserved Stack Areas for Critical Sections
fparain
parents:
34667
diff
changeset
|
1888 |
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
|
1889 |
jt->stack_guards_enabled()) { // No pending stack overflow exceptions |
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
1890 |
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
|
1891 |
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
|
1892 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1893 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1894 |
jt = jt->next(); |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1895 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1896 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1897 |
|
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1898 |
return result; |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1899 |
} |
8e87d545195f
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
15855
diff
changeset
|
1900 |
|
950 | 1901 |
void* os::dll_lookup(void* handle, const char* name) { |
1902 |
void* res = dlsym(handle, name); |
|
1903 |
return res; |
|
1904 |
} |
|
1 | 1905 |
|
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
|
1906 |
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
|
1907 |
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
|
1908 |
} |
1 | 1909 |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1910 |
static bool _print_ascii_file(const char* filename, outputStream* st) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1911 |
int fd = ::open(filename, O_RDONLY); |
1 | 1912 |
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
|
1913 |
return false; |
1 | 1914 |
} |
1915 |
||
1916 |
char buf[32]; |
|
1917 |
int bytes; |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1918 |
while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { |
1 | 1919 |
st->print_raw(buf, bytes); |
1920 |
} |
|
1921 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
1922 |
::close(fd); |
1 | 1923 |
|
1924 |
return true; |
|
1925 |
} |
|
1926 |
||
1927 |
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
|
1928 |
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
|
1929 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1930 |
char fname[32]; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1931 |
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
|
1932 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1933 |
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
|
1934 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
1935 |
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
|
1936 |
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
|
1937 |
} |
1 | 1938 |
} |
1939 |
||
26557
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1940 |
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
|
1941 |
FILE *procmapsFile = NULL; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1942 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1943 |
// 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
|
1944 |
if ((procmapsFile = fopen("/proc/self/maps", "r")) != NULL) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1945 |
// 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
|
1946 |
char line[PATH_MAX + 100]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1947 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1948 |
// Read line by line from 'file' |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1949 |
while (fgets(line, sizeof(line), procmapsFile) != NULL) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1950 |
u8 base, top, offset, inode; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1951 |
char permissions[5]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1952 |
char device[6]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1953 |
char name[PATH_MAX + 1]; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1954 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1955 |
// Parse fields from line |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
1956 |
sscanf(line, UINT64_FORMAT_X "-" UINT64_FORMAT_X " %4s " UINT64_FORMAT_X " %5s " INT64_FORMAT " %s", |
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
1957 |
&base, &top, permissions, &offset, device, &inode, name); |
26557
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
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parents:
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changeset
|
1958 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
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changeset
|
1959 |
// 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.
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parents:
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diff
changeset
|
1960 |
if (strcmp(device, "00:00") != 0) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
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diff
changeset
|
1961 |
|
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1962 |
// Call callback with the fields of interest |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
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parents:
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diff
changeset
|
1963 |
if(callback(name, (address)base, (address)top, param)) { |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
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diff
changeset
|
1964 |
// Oops abort, callback aborted |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1965 |
fclose(procmapsFile); |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1966 |
return 1; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1967 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1968 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1969 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1970 |
fclose(procmapsFile); |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1971 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1972 |
return 0; |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1973 |
} |
e399effe36f9
8056242: Add function to return structured information about loaded libraries.
sla
parents:
26135
diff
changeset
|
1974 |
|
12735
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diff
changeset
|
1975 |
void os::print_os_info_brief(outputStream* st) { |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
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diff
changeset
|
1976 |
os::Linux::print_distro_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1977 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
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parents:
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diff
changeset
|
1978 |
os::Posix::print_uname_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
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diff
changeset
|
1979 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1980 |
os::Linux::print_libversion_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1981 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
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diff
changeset
|
1982 |
} |
1 | 1983 |
|
1984 |
void os::print_os_info(outputStream* st) { |
|
1985 |
st->print("OS:"); |
|
1986 |
||
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
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changeset
|
1987 |
os::Linux::print_distro_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
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diff
changeset
|
1988 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1989 |
os::Posix::print_uname_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1990 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1991 |
// Print warning if unsafe chroot environment detected |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
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diff
changeset
|
1992 |
if (unsafe_chroot_detected) { |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1993 |
st->print("WARNING!! "); |
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
1994 |
st->print_cr("%s", unstable_chroot_error); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
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parents:
12116
diff
changeset
|
1995 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
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parents:
12116
diff
changeset
|
1996 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1997 |
os::Linux::print_libversion_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1998 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
1999 |
os::Posix::print_rlimit_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2000 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2001 |
os::Posix::print_load_average(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2002 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2003 |
os::Linux::print_full_memory_info(st); |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2004 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2005 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2006 |
// 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
|
2007 |
// 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
|
2008 |
// 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
|
2009 |
// 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
|
2010 |
// /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
|
2011 |
// /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
|
2012 |
// 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
|
2013 |
// 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
|
2014 |
// 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
|
2015 |
// redhat-release file. |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2016 |
// Since Red Hat has a lsb-release file that is not very descriptive the |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2017 |
// search for redhat-release needs to be before lsb-release. |
7d9d20ec275b
6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
dcubed
parents:
19964
diff
changeset
|
2018 |
// 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
|
2019 |
// 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
|
2020 |
// 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
|
2021 |
// 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
|
2022 |
// 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
|
2023 |
// 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
|
2024 |
// 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
|
2025 |
// 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
|
2026 |
// "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
|
2027 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2028 |
const char* distro_files[] = { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2029 |
"/etc/oracle-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2030 |
"/etc/mandriva-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2031 |
"/etc/mandrake-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2032 |
"/etc/sun-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2033 |
"/etc/redhat-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2034 |
"/etc/lsb-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2035 |
"/etc/SuSE-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2036 |
"/etc/turbolinux-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2037 |
"/etc/gentoo-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2038 |
"/etc/ltib-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2039 |
"/etc/angstrom-version", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2040 |
"/etc/system-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2041 |
"/etc/os-release", |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2042 |
NULL }; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2043 |
|
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2044 |
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
|
2045 |
for (int i = 0;; i++) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2046 |
const char* file = distro_files[i]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2047 |
if (file == NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2048 |
break; // done |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2049 |
} |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2050 |
// If file prints, we found it. |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2051 |
if (_print_ascii_file(file, st)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2052 |
return; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2053 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2054 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2055 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2056 |
if (file_exists("/etc/debian_version")) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2057 |
st->print("Debian "); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2058 |
_print_ascii_file("/etc/debian_version", st); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2059 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2060 |
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
|
2061 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2062 |
st->cr(); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2063 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2064 |
|
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2065 |
static void parse_os_info(char* distro, size_t length, const char* file) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2066 |
FILE* fp = fopen(file, "r"); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2067 |
if (fp != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2068 |
char buf[256]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2069 |
// get last line of the file. |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2070 |
while (fgets(buf, sizeof(buf), fp)) { } |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2071 |
// Edit out extra stuff in expected ubuntu format |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2072 |
if (strstr(buf, "DISTRIB_DESCRIPTION=") != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2073 |
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
|
2074 |
if (ptr != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2075 |
ptr++; // go beyond first quote |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2076 |
char* nl = strchr(ptr, '\"'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2077 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2078 |
strncpy(distro, ptr, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2079 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2080 |
ptr = strstr(buf, "="); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2081 |
ptr++; // go beyond equals then |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2082 |
char* nl = strchr(ptr, '\n'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2083 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2084 |
strncpy(distro, ptr, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2085 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2086 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2087 |
// if not in expected Ubuntu format, print out whole line minus \n |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2088 |
char* nl = strchr(buf, '\n'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2089 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2090 |
strncpy(distro, buf, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2091 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2092 |
// close distro file |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2093 |
fclose(fp); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2094 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2095 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2096 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2097 |
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
|
2098 |
for (int i = 0;; i++) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2099 |
const char* file = distro_files[i]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2100 |
if (file == NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2101 |
break; // ran out of distro_files |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2102 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2103 |
if (file_exists(file)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2104 |
parse_os_info(buf, buflen, file); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2105 |
return; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2106 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2107 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2108 |
// special case for debian |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2109 |
if (file_exists("/etc/debian_version")) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2110 |
strncpy(buf, "Debian ", buflen); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2111 |
parse_os_info(&buf[7], buflen-7, "/etc/debian_version"); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2112 |
} else { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2113 |
strncpy(buf, "Linux", buflen); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2114 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2115 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2116 |
|
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2117 |
void os::Linux::print_libversion_info(outputStream* st) { |
1 | 2118 |
// libc, pthread |
2119 |
st->print("libc:"); |
|
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
2120 |
st->print("%s ", os::Linux::glibc_version()); |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
24352
diff
changeset
|
2121 |
st->print("%s ", os::Linux::libpthread_version()); |
1 | 2122 |
st->cr(); |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2123 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2124 |
|
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2125 |
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
|
2126 |
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
|
2127 |
_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
|
2128 |
st->cr(); |
10023
e99d9a03c0f5
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
9625
diff
changeset
|
2129 |
} |
e99d9a03c0f5
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
9625
diff
changeset
|
2130 |
|
1 | 2131 |
void os::print_memory_info(outputStream* st) { |
2132 |
||
2133 |
st->print("Memory:"); |
|
2134 |
st->print(" %dk page", os::vm_page_size()>>10); |
|
2135 |
||
2136 |
// values in struct sysinfo are "unsigned long" |
|
2137 |
struct sysinfo si; |
|
2138 |
sysinfo(&si); |
|
2139 |
||
2140 |
st->print(", physical " UINT64_FORMAT "k", |
|
2141 |
os::physical_memory() >> 10); |
|
2142 |
st->print("(" UINT64_FORMAT "k free)", |
|
2143 |
os::available_memory() >> 10); |
|
2144 |
st->print(", swap " UINT64_FORMAT "k", |
|
2145 |
((jlong)si.totalswap * si.mem_unit) >> 10); |
|
2146 |
st->print("(" UINT64_FORMAT "k free)", |
|
2147 |
((jlong)si.freeswap * si.mem_unit) >> 10); |
|
2148 |
st->cr(); |
|
2149 |
} |
|
2150 |
||
31356
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2151 |
// 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
|
2152 |
// 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
|
2153 |
// 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
|
2154 |
// "flags" field is considered missing. |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2155 |
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
|
2156 |
#if defined(IA32) || defined(AMD64) |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2157 |
// 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
|
2158 |
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
|
2159 |
if (fp) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2160 |
while (!feof(fp)) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2161 |
if (fgets(buf, buflen, fp)) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2162 |
// 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
|
2163 |
bool model_name_printed = false; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2164 |
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
|
2165 |
if (!model_name_printed) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2166 |
st->print_raw("\nCPU Model and flags from /proc/cpuinfo:\n"); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2167 |
st->print_raw(buf); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2168 |
model_name_printed = true; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2169 |
} else { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2170 |
// 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
|
2171 |
fclose(fp); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2172 |
return true; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2173 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2174 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2175 |
// print the flags line too |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2176 |
if (strstr(buf, "flags") != NULL) { |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2177 |
st->print_raw(buf); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2178 |
fclose(fp); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2179 |
return true; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2180 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2181 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2182 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2183 |
fclose(fp); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2184 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2185 |
#endif // x86 platforms |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2186 |
return false; |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2187 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2188 |
|
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2189 |
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
|
2190 |
// 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
|
2191 |
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
|
2192 |
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
|
2193 |
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
|
2194 |
st->print_cr(" <Not Available>"); |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2195 |
} |
55ee785c49c5
8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
coleenp
parents:
31026
diff
changeset
|
2196 |
} |
12735
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2197 |
} |
3e2e491f4f69
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
12116
diff
changeset
|
2198 |
|
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2199 |
#if defined(AMD64) || defined(IA32) || defined(X32) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2200 |
const char* search_string = "model name"; |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2201 |
#elif defined(SPARC) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2202 |
const char* search_string = "cpu"; |
35075
ca79cbf3f106
8073139: PPC64: User-visible arch directory and os.arch value on ppc64le cause issues with Java tooling
asmundak
parents:
35071
diff
changeset
|
2203 |
#elif defined(PPC64) |
ca79cbf3f106
8073139: PPC64: User-visible arch directory and os.arch value on ppc64le cause issues with Java tooling
asmundak
parents:
35071
diff
changeset
|
2204 |
const char* search_string = "cpu"; |
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2205 |
#else |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2206 |
const char* search_string = "Processor"; |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2207 |
#endif |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2208 |
|
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2209 |
// 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
|
2210 |
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
|
2211 |
FILE* fp = fopen("/proc/cpuinfo", "r"); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2212 |
if (fp != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2213 |
while (!feof(fp)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2214 |
char buf[256]; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2215 |
if (fgets(buf, sizeof(buf), fp)) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2216 |
char* start = strstr(buf, search_string); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2217 |
if (start != NULL) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2218 |
char *ptr = start + strlen(search_string); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2219 |
char *end = buf + strlen(buf); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2220 |
while (ptr != end) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2221 |
// 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
|
2222 |
if (*ptr != ' ' && *ptr != '\t' && *ptr != ':') { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2223 |
break; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2224 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2225 |
ptr++; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2226 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2227 |
if (ptr != end) { |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2228 |
// 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
|
2229 |
char* nl = strchr(buf, '\n'); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2230 |
if (nl != NULL) *nl = '\0'; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2231 |
strncpy(cpuinfo, ptr, length); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2232 |
fclose(fp); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2233 |
return; |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2234 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2235 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2236 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2237 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2238 |
fclose(fp); |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2239 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2240 |
// 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
|
2241 |
// /proc/cpuinfo file will be printed later in the file (or enough of it for x86) |
32742
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2242 |
#if defined(AMD64) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2243 |
strncpy(cpuinfo, "x86_64", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2244 |
#elif defined(IA32) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2245 |
strncpy(cpuinfo, "x86_32", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2246 |
#elif defined(IA64) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2247 |
strncpy(cpuinfo, "IA64", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2248 |
#elif defined(SPARC) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2249 |
strncpy(cpuinfo, "sparcv9", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2250 |
#elif defined(AARCH64) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2251 |
strncpy(cpuinfo, "AArch64", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2252 |
#elif defined(ARM) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2253 |
strncpy(cpuinfo, "ARM", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2254 |
#elif defined(PPC) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2255 |
strncpy(cpuinfo, "PPC64", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2256 |
#elif defined(ZERO_LIBARCH) |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2257 |
strncpy(cpuinfo, ZERO_LIBARCH, length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2258 |
#else |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2259 |
strncpy(cpuinfo, "unknown", length); |
c47e215ba55b
8135298: Fix zero builds for "unknown" architectures on linux.
coleenp
parents:
32353
diff
changeset
|
2260 |
#endif |
31963
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2261 |
} |
641ed52732ec
8026324: hs_err improvement: Add summary section to hs_err file
coleenp
parents:
31610
diff
changeset
|
2262 |
|
1 | 2263 |
static void print_signal_handler(outputStream* st, int sig, |
2264 |
char* buf, size_t buflen); |
|
2265 |
||
2266 |
void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { |
|
2267 |
st->print_cr("Signal Handlers:"); |
|
2268 |
print_signal_handler(st, SIGSEGV, buf, buflen); |
|
2269 |
print_signal_handler(st, SIGBUS , buf, buflen); |
|
2270 |
print_signal_handler(st, SIGFPE , buf, buflen); |
|
2271 |
print_signal_handler(st, SIGPIPE, buf, buflen); |
|
2272 |
print_signal_handler(st, SIGXFSZ, buf, buflen); |
|
2273 |
print_signal_handler(st, SIGILL , buf, buflen); |
|
2274 |
print_signal_handler(st, SR_signum, buf, buflen); |
|
2275 |
print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen); |
|
2276 |
print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); |
|
2277 |
print_signal_handler(st, SHUTDOWN3_SIGNAL , buf, buflen); |
|
2278 |
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
|
2279 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
2280 |
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
|
2281 |
#endif |
1 | 2282 |
} |
2283 |
||
2284 |
static char saved_jvm_path[MAXPATHLEN] = {0}; |
|
2285 |
||
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2286 |
// Find the full path to the current module, libjvm.so |
5922 | 2287 |
void os::jvm_path(char *buf, jint buflen) { |
1 | 2288 |
// Error checking. |
5922 | 2289 |
if (buflen < MAXPATHLEN) { |
1 | 2290 |
assert(false, "must use a large-enough buffer"); |
2291 |
buf[0] = '\0'; |
|
2292 |
return; |
|
2293 |
} |
|
2294 |
// Lazy resolve the path to current module. |
|
2295 |
if (saved_jvm_path[0] != 0) { |
|
2296 |
strcpy(buf, saved_jvm_path); |
|
2297 |
return; |
|
2298 |
} |
|
2299 |
||
2300 |
char dli_fname[MAXPATHLEN]; |
|
2301 |
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
|
2302 |
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
|
2303 |
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
|
2304 |
assert(ret, "cannot locate libjvm"); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2305 |
char *rp = NULL; |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2306 |
if (ret && dli_fname[0] != '\0') { |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2307 |
rp = realpath(dli_fname, buf); |
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
2308 |
} |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2309 |
if (rp == NULL) { |
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1664
diff
changeset
|
2310 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2311 |
} |
1 | 2312 |
|
22734
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2313 |
if (Arguments::sun_java_launcher_is_altjvm()) { |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2314 |
// Support for the java launcher's '-XXaltjvm=<path>' option. Typical |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2315 |
// value for buf is "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". |
41757c1f3946
8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
rdurbin
parents:
22533
diff
changeset
|
2316 |
// 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
|
2317 |
// 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
|
2318 |
// 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
|
2319 |
// 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
|
2320 |
// hotspot/libjvm.so). |
1 | 2321 |
const char *p = buf + strlen(buf) - 1; |
2322 |
for (int count = 0; p > buf && count < 5; ++count) { |
|
2323 |
for (--p; p > buf && *p != '/'; --p) |
|
2324 |
/* empty */ ; |
|
2325 |
} |
|
2326 |
||
2327 |
if (strncmp(p, "/jre/lib/", 9) != 0) { |
|
2328 |
// Look for JAVA_HOME in the environment. |
|
2329 |
char* java_home_var = ::getenv("JAVA_HOME"); |
|
2330 |
if (java_home_var != NULL && java_home_var[0] != 0) { |
|
5922 | 2331 |
char* jrelib_p; |
2332 |
int len; |
|
2333 |
||
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2334 |
// Check the current module name "libjvm.so". |
1 | 2335 |
p = strrchr(buf, '/'); |
27471 | 2336 |
if (p == NULL) { |
2337 |
return; |
|
2338 |
} |
|
1 | 2339 |
assert(strstr(p, "/libjvm") == p, "invalid library name"); |
2340 |
||
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
2341 |
rp = realpath(java_home_var, buf); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2342 |
if (rp == NULL) { |
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1664
diff
changeset
|
2343 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2344 |
} |
5922 | 2345 |
|
2346 |
// determine if this is a legacy image or modules image |
|
2347 |
// modules image doesn't have "jre" subdirectory |
|
2348 |
len = strlen(buf); |
|
25503 | 2349 |
assert(len < buflen, "Ran out of buffer room"); |
5922 | 2350 |
jrelib_p = buf + len; |
2351 |
snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); |
|
2352 |
if (0 != access(buf, F_OK)) { |
|
2353 |
snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); |
|
2354 |
} |
|
2355 |
||
1 | 2356 |
if (0 == access(buf, F_OK)) { |
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2357 |
// Use current module name "libjvm.so" |
5922 | 2358 |
len = strlen(buf); |
15096
3db45569f8c0
8005044: remove crufty '_g' support from HS runtime code
dcubed
parents:
14633
diff
changeset
|
2359 |
snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
1 | 2360 |
} else { |
2361 |
// Go back to path of .so |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
2362 |
rp = realpath(dli_fname, buf); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2363 |
if (rp == NULL) { |
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1664
diff
changeset
|
2364 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2365 |
} |
1 | 2366 |
} |
2367 |
} |
|
2368 |
} |
|
2369 |
} |
|
2370 |
||
25503 | 2371 |
strncpy(saved_jvm_path, buf, MAXPATHLEN); |
27471 | 2372 |
saved_jvm_path[MAXPATHLEN - 1] = '\0'; |
1 | 2373 |
} |
2374 |
||
2375 |
void os::print_jni_name_prefix_on(outputStream* st, int args_size) { |
|
2376 |
// no prefix required, not even "_" |
|
2377 |
} |
|
2378 |
||
2379 |
void os::print_jni_name_suffix_on(outputStream* st, int args_size) { |
|
2380 |
// no suffix required |
|
2381 |
} |
|
2382 |
||
2383 |
//////////////////////////////////////////////////////////////////////////////// |
|
2384 |
// sun.misc.Signal support |
|
2385 |
||
2386 |
static volatile jint sigint_count = 0; |
|
2387 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2388 |
static void UserHandler(int sig, void *siginfo, void *context) { |
1 | 2389 |
// 4511530 - sem_post is serialized and handled by the manager thread. When |
2390 |
// the program is interrupted by Ctrl-C, SIGINT is sent to every thread. We |
|
2391 |
// don't want to flood the manager thread with sem_post requests. |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2392 |
if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2393 |
return; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2394 |
} |
1 | 2395 |
|
2396 |
// Ctrl-C is pressed during error reporting, likely because the error |
|
2397 |
// handler fails to abort. Let VM die immediately. |
|
2398 |
if (sig == SIGINT && 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
|
2399 |
os::die(); |
1 | 2400 |
} |
2401 |
||
2402 |
os::signal_notify(sig); |
|
2403 |
} |
|
2404 |
||
2405 |
void* os::user_handler() { |
|
2406 |
return CAST_FROM_FN_PTR(void*, UserHandler); |
|
2407 |
} |
|
2408 |
||
31610 | 2409 |
struct timespec PosixSemaphore::create_timespec(unsigned int sec, int nsec) { |
18025 | 2410 |
struct timespec ts; |
23479 | 2411 |
// Semaphore's are always associated with CLOCK_REALTIME |
2412 |
os::Linux::clock_gettime(CLOCK_REALTIME, &ts); |
|
2413 |
// see unpackTime for discussion on overflow checking |
|
2414 |
if (sec >= MAX_SECS) { |
|
2415 |
ts.tv_sec += MAX_SECS; |
|
2416 |
ts.tv_nsec = 0; |
|
2417 |
} else { |
|
2418 |
ts.tv_sec += sec; |
|
2419 |
ts.tv_nsec += nsec; |
|
2420 |
if (ts.tv_nsec >= NANOSECS_PER_SEC) { |
|
2421 |
ts.tv_nsec -= NANOSECS_PER_SEC; |
|
2422 |
++ts.tv_sec; // note: this must be <= max_secs |
|
2423 |
} |
|
2424 |
} |
|
18025 | 2425 |
|
31610 | 2426 |
return ts; |
18025 | 2427 |
} |
2428 |
||
1 | 2429 |
extern "C" { |
2430 |
typedef void (*sa_handler_t)(int); |
|
2431 |
typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); |
|
2432 |
} |
|
2433 |
||
2434 |
void* os::signal(int signal_number, void* handler) { |
|
2435 |
struct sigaction sigAct, oldSigAct; |
|
2436 |
||
2437 |
sigfillset(&(sigAct.sa_mask)); |
|
2438 |
sigAct.sa_flags = SA_RESTART|SA_SIGINFO; |
|
2439 |
sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); |
|
2440 |
||
2441 |
if (sigaction(signal_number, &sigAct, &oldSigAct)) { |
|
2442 |
// -1 means registration failed |
|
2443 |
return (void *)-1; |
|
2444 |
} |
|
2445 |
||
2446 |
return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); |
|
2447 |
} |
|
2448 |
||
2449 |
void os::signal_raise(int signal_number) { |
|
2450 |
::raise(signal_number); |
|
2451 |
} |
|
2452 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2453 |
// 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
|
2454 |
// code platform specific, which it is by its very nature. |
1 | 2455 |
|
2456 |
// Will be modified when max signal is changed to be dynamic |
|
2457 |
int os::sigexitnum_pd() { |
|
2458 |
return NSIG; |
|
2459 |
} |
|
2460 |
||
2461 |
// a counter for each possible signal value |
|
2462 |
static volatile jint pending_signals[NSIG+1] = { 0 }; |
|
2463 |
||
2464 |
// Linux(POSIX) specific hand shaking semaphore. |
|
2465 |
static sem_t sig_sem; |
|
31610 | 2466 |
static PosixSemaphore sr_semaphore; |
1 | 2467 |
|
2468 |
void os::signal_init_pd() { |
|
2469 |
// Initialize signal structures |
|
2470 |
::memset((void*)pending_signals, 0, sizeof(pending_signals)); |
|
2471 |
||
2472 |
// Initialize signal semaphore |
|
2473 |
::sem_init(&sig_sem, 0, 0); |
|
2474 |
} |
|
2475 |
||
2476 |
void os::signal_notify(int sig) { |
|
2477 |
Atomic::inc(&pending_signals[sig]); |
|
2478 |
::sem_post(&sig_sem); |
|
2479 |
} |
|
2480 |
||
2481 |
static int check_pending_signals(bool wait) { |
|
2482 |
Atomic::store(0, &sigint_count); |
|
2483 |
for (;;) { |
|
2484 |
for (int i = 0; i < NSIG + 1; i++) { |
|
2485 |
jint n = pending_signals[i]; |
|
2486 |
if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { |
|
2487 |
return i; |
|
2488 |
} |
|
2489 |
} |
|
2490 |
if (!wait) { |
|
2491 |
return -1; |
|
2492 |
} |
|
2493 |
JavaThread *thread = JavaThread::current(); |
|
2494 |
ThreadBlockInVM tbivm(thread); |
|
2495 |
||
2496 |
bool threadIsSuspended; |
|
2497 |
do { |
|
2498 |
thread->set_suspend_equivalent(); |
|
2499 |
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() |
|
2500 |
::sem_wait(&sig_sem); |
|
2501 |
||
2502 |
// were we externally suspended while we were waiting? |
|
2503 |
threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); |
|
2504 |
if (threadIsSuspended) { |
|
2505 |
// The semaphore has been incremented, but while we were waiting |
|
2506 |
// another thread suspended us. We don't want to continue running |
|
2507 |
// while suspended because that would surprise the thread that |
|
2508 |
// suspended us. |
|
2509 |
::sem_post(&sig_sem); |
|
2510 |
||
2511 |
thread->java_suspend_self(); |
|
2512 |
} |
|
2513 |
} while (threadIsSuspended); |
|
2514 |
} |
|
2515 |
} |
|
2516 |
||
2517 |
int os::signal_lookup() { |
|
2518 |
return check_pending_signals(false); |
|
2519 |
} |
|
2520 |
||
2521 |
int os::signal_wait() { |
|
2522 |
return check_pending_signals(true); |
|
2523 |
} |
|
2524 |
||
2525 |
//////////////////////////////////////////////////////////////////////////////// |
|
2526 |
// Virtual Memory |
|
2527 |
||
2528 |
int os::vm_page_size() { |
|
2529 |
// Seems redundant as all get out |
|
2530 |
assert(os::Linux::page_size() != -1, "must call os::init"); |
|
2531 |
return os::Linux::page_size(); |
|
2532 |
} |
|
2533 |
||
2534 |
// Solaris allocates memory by pages. |
|
2535 |
int os::vm_allocation_granularity() { |
|
2536 |
assert(os::Linux::page_size() != -1, "must call os::init"); |
|
2537 |
return os::Linux::page_size(); |
|
2538 |
} |
|
2539 |
||
2540 |
// Rationale behind this function: |
|
2541 |
// current (Mon Apr 25 20:12:18 MSD 2005) oprofile drops samples without executable |
|
2542 |
// mapping for address (see lookup_dcookie() in the kernel module), thus we cannot get |
|
2543 |
// samples for JITted code. Here we create private executable mapping over the code cache |
|
2544 |
// and then we can use standard (well, almost, as mapping can change) way to provide |
|
2545 |
// info for the reporting script by storing timestamp and location of symbol |
|
2546 |
void linux_wrap_code(char* base, size_t size) { |
|
2547 |
static volatile jint cnt = 0; |
|
2548 |
||
2549 |
if (!UseOprofile) { |
|
2550 |
return; |
|
2551 |
} |
|
2552 |
||
5410
c4b979417733
6944822: Fix for 6938627 exposes problem with hard-coded buffer sizes
coleenp
parents:
5237
diff
changeset
|
2553 |
char buf[PATH_MAX+1]; |
1 | 2554 |
int num = Atomic::add(1, &cnt); |
2555 |
||
5237
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5090
diff
changeset
|
2556 |
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
|
2557 |
os::get_temp_directory(), os::current_process_id(), num); |
1 | 2558 |
unlink(buf); |
2559 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2560 |
int fd = ::open(buf, O_CREAT | O_RDWR, S_IRWXU); |
1 | 2561 |
|
2562 |
if (fd != -1) { |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2563 |
off_t rv = ::lseek(fd, size-2, SEEK_SET); |
1 | 2564 |
if (rv != (off_t)-1) { |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2565 |
if (::write(fd, "", 1) == 1) { |
1 | 2566 |
mmap(base, size, |
2567 |
PROT_READ|PROT_WRITE|PROT_EXEC, |
|
2568 |
MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, fd, 0); |
|
2569 |
} |
|
2570 |
} |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
2571 |
::close(fd); |
1 | 2572 |
unlink(buf); |
2573 |
} |
|
2574 |
} |
|
2575 |
||
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2576 |
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
|
2577 |
// 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
|
2578 |
// 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
|
2579 |
// 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
|
2580 |
// 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
|
2581 |
// 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
|
2582 |
switch (err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2583 |
case EBADF: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2584 |
case EINVAL: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2585 |
case ENOTSUP: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2586 |
// 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
|
2587 |
return true; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2588 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2589 |
default: |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2590 |
// 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
|
2591 |
// 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
|
2592 |
// 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
|
2593 |
// 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
|
2594 |
// same memory mapped. |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2595 |
return false; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2596 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2597 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2598 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2599 |
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
|
2600 |
int err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2601 |
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
|
2602 |
", %d) failed; error='%s' (errno=%d)", p2i(addr), size, exec, |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2603 |
strerror(err), err); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2604 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2605 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2606 |
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
|
2607 |
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
|
2608 |
int err) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2609 |
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
|
2610 |
", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", p2i(addr), size, |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2611 |
alignment_hint, exec, strerror(err), err); |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2612 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2613 |
|
1 | 2614 |
// NOTE: Linux kernel does not really reserve the pages for us. |
2615 |
// All it does is to check if there are enough free pages |
|
2616 |
// left at the time of mmap(). This could be a potential |
|
2617 |
// problem. |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2618 |
int os::Linux::commit_memory_impl(char* addr, size_t size, bool exec) { |
2268 | 2619 |
int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
2620 |
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
|
2621 |
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0); |
10494 | 2622 |
if (res != (uintptr_t) MAP_FAILED) { |
2623 |
if (UseNUMAInterleaving) { |
|
2624 |
numa_make_global(addr, size); |
|
2625 |
} |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2626 |
return 0; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2627 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2628 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2629 |
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
|
2630 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2631 |
if (!recoverable_mmap_error(err)) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2632 |
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
|
2633 |
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
|
2634 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2635 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2636 |
return err; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2637 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2638 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2639 |
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
|
2640 |
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
|
2641 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2642 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2643 |
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
|
2644 |
const char* mesg) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2645 |
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
|
2646 |
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
|
2647 |
if (err != 0) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2648 |
// 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
|
2649 |
warn_fail_commit_memory(addr, size, exec, err); |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
2650 |
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
|
2651 |
} |
1 | 2652 |
} |
2653 |
||
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2654 |
// 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
|
2655 |
#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
|
2656 |
#define MAP_HUGETLB 0x40000 |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2657 |
#endif |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2658 |
|
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2659 |
// 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
|
2660 |
#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
|
2661 |
#define MADV_HUGEPAGE 14 |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2662 |
#endif |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2663 |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2664 |
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
|
2665 |
size_t alignment_hint, bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
2666 |
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
|
2667 |
if (err == 0) { |
10522
23830453e083
7087583: Hotspot fails to allocate heap with mmap(MAP_HUGETLB)
iveresov
parents:
10496
diff
changeset
|
2668 |
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
|
2669 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2670 |
return err; |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2671 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2672 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2673 |
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
|
2674 |
bool exec) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2675 |
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
|
2676 |
} |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2677 |
|
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2678 |
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
|
2679 |
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
|
2680 |
const char* mesg) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2681 |
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
|
2682 |
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
|
2683 |
if (err != 0) { |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
2684 |
// 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
|
2685 |
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
|
2686 |
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
|
2687 |
} |
1 | 2688 |
} |
2689 |
||
13195 | 2690 |
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
|
2691 |
if (UseTransparentHugePages && alignment_hint > (size_t)vm_page_size()) { |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2692 |
// 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
|
2693 |
// 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
|
2694 |
::madvise(addr, bytes, MADV_HUGEPAGE); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2695 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
2696 |
} |
388 | 2697 |
|
13195 | 2698 |
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
|
2699 |
// 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
|
2700 |
// 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
|
2701 |
// 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
|
2702 |
// 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
|
2703 |
// allow that in any case. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
2704 |
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
|
2705 |
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
|
2706 |
} |
388 | 2707 |
} |
2708 |
||
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2709 |
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
|
2710 |
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
|
2711 |
} |
388 | 2712 |
|
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2713 |
// 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
|
2714 |
// bind policy to MPOL_PREFERRED for the current thread. |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2715 |
#define USE_MPOL_PREFERRED 0 |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2716 |
|
388 | 2717 |
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
|
2718 |
// 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
|
2719 |
// 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
|
2720 |
// 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
|
2721 |
// 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
|
2722 |
// 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
|
2723 |
// 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
|
2724 |
// free large pages. |
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2725 |
Linux::numa_set_bind_policy(USE_MPOL_PREFERRED); |
388 | 2726 |
Linux::numa_tonode_memory(addr, bytes, lgrp_hint); |
2727 |
} |
|
2728 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2729 |
bool os::numa_topology_changed() { return false; } |
388 | 2730 |
|
2731 |
size_t os::numa_get_groups_num() { |
|
2732 |
int max_node = Linux::numa_max_node(); |
|
2733 |
return max_node > 0 ? max_node + 1 : 1; |
|
2734 |
} |
|
2735 |
||
2736 |
int os::numa_get_group_id() { |
|
2737 |
int cpu_id = Linux::sched_getcpu(); |
|
2738 |
if (cpu_id != -1) { |
|
2739 |
int lgrp_id = Linux::get_node_by_cpu(cpu_id); |
|
2740 |
if (lgrp_id != -1) { |
|
2741 |
return lgrp_id; |
|
2742 |
} |
|
1 | 2743 |
} |
2744 |
return 0; |
|
2745 |
} |
|
2746 |
||
388 | 2747 |
size_t os::numa_get_leaf_groups(int *ids, size_t size) { |
2748 |
for (size_t i = 0; i < size; i++) { |
|
2749 |
ids[i] = i; |
|
2750 |
} |
|
2751 |
return size; |
|
2752 |
} |
|
2753 |
||
1 | 2754 |
bool os::get_page_info(char *start, page_info* info) { |
2755 |
return false; |
|
2756 |
} |
|
2757 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2758 |
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
|
2759 |
page_info* page_found) { |
1 | 2760 |
return end; |
2761 |
} |
|
2762 |
||
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2763 |
|
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2764 |
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
|
2765 |
unsigned int cpu = 0; |
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2766 |
int retval = -1; |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2767 |
|
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2768 |
#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
|
2769 |
#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
|
2770 |
#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
|
2771 |
#endif |
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2772 |
retval = syscall(SYS_getcpu, &cpu, NULL, NULL); |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2773 |
#elif defined(AMD64) |
10496
b209db6147cf
7082645: Hotspot doesn't compile on old linuxes after 7060836
iveresov
parents:
10494
diff
changeset
|
2774 |
// 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
|
2775 |
// 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
|
2776 |
#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
|
2777 |
#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
|
2778 |
#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
|
2779 |
#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
|
2780 |
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
|
2781 |
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
|
2782 |
retval = vgetcpu(&cpu, NULL, NULL); |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2783 |
#endif |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2784 |
|
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2785 |
return (retval == -1) ? retval : cpu; |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2786 |
} |
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2787 |
|
8106 | 2788 |
// Something to do with the numa-aware allocator needs these symbols |
2789 |
extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { } |
|
2790 |
extern "C" JNIEXPORT void numa_error(char *where) { } |
|
388 | 2791 |
|
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2792 |
|
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2793 |
// If we are running with libnuma version > 2, then we should |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2794 |
// be trying to use symbols with versions 1.1 |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2795 |
// If we are running with earlier version, which did not have symbol versions, |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2796 |
// we should use the base version. |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2797 |
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
|
2798 |
void *f = dlvsym(handle, name, "libnuma_1.1"); |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2799 |
if (f == NULL) { |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2800 |
f = dlsym(handle, name); |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2801 |
} |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2802 |
return f; |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2803 |
} |
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2804 |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2805 |
bool os::Linux::libnuma_init() { |
388 | 2806 |
// sched_getcpu() should be in libc. |
2807 |
set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, |
|
2808 |
dlsym(RTLD_DEFAULT, "sched_getcpu"))); |
|
2809 |
||
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2810 |
// If it's not, try a direct syscall. |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2811 |
if (sched_getcpu() == -1) { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2812 |
set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2813 |
(void*)&sched_getcpu_syscall)); |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2814 |
} |
10239
c7af330d33d9
7060836: RHEL 5.5 and 5.6 should support UseNUMA
iveresov
parents:
10238
diff
changeset
|
2815 |
|
388 | 2816 |
if (sched_getcpu() != -1) { // Does it work? |
975
ad7da100aa6a
6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents:
745
diff
changeset
|
2817 |
void *handle = dlopen("libnuma.so.1", RTLD_LAZY); |
388 | 2818 |
if (handle != NULL) { |
2819 |
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
|
2820 |
libnuma_dlsym(handle, "numa_node_to_cpus"))); |
388 | 2821 |
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
|
2822 |
libnuma_dlsym(handle, "numa_max_node"))); |
388 | 2823 |
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
|
2824 |
libnuma_dlsym(handle, "numa_available"))); |
388 | 2825 |
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
|
2826 |
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
|
2827 |
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
|
2828 |
libnuma_dlsym(handle, "numa_interleave_memory"))); |
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2829 |
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
|
2830 |
libnuma_dlsym(handle, "numa_set_bind_policy"))); |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2831 |
|
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2832 |
|
388 | 2833 |
if (numa_available() != -1) { |
2753
1e9bbaae891b
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
2751
diff
changeset
|
2834 |
set_numa_all_nodes((unsigned long*)libnuma_dlsym(handle, "numa_all_nodes")); |
388 | 2835 |
// Create a cpu -> node mapping |
13195 | 2836 |
_cpu_to_node = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(0, true); |
388 | 2837 |
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
|
2838 |
return true; |
388 | 2839 |
} |
2840 |
} |
|
2841 |
} |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2842 |
return false; |
388 | 2843 |
} |
2844 |
||
2845 |
// rebuild_cpu_to_node_map() constructs a table mapping cpud id to node id. |
|
2846 |
// The table is later used in get_node_by_cpu(). |
|
2847 |
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
|
2848 |
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
|
2849 |
// 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
|
2850 |
// 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
|
2851 |
// 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
|
2852 |
// 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
|
2853 |
// 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
|
2854 |
// in the library. |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2855 |
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
|
2856 |
|
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2857 |
size_t cpu_num = os::active_processor_count(); |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2858 |
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
|
2859 |
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
|
2860 |
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
|
2861 |
|
388 | 2862 |
cpu_to_node()->clear(); |
2863 |
cpu_to_node()->at_grow(cpu_num - 1); |
|
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2864 |
size_t node_num = numa_get_groups_num(); |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2865 |
|
13195 | 2866 |
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
|
2867 |
for (size_t i = 0; i < node_num; i++) { |
388 | 2868 |
if (numa_node_to_cpus(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
|
2869 |
for (size_t j = 0; j < cpu_map_valid_size; j++) { |
388 | 2870 |
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
|
2871 |
for (size_t k = 0; k < BitsPerCLong; k++) { |
388 | 2872 |
if (cpu_map[j] & (1UL << k)) { |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2873 |
cpu_to_node()->at_put(j * BitsPerCLong + k, i); |
388 | 2874 |
} |
2875 |
} |
|
2876 |
} |
|
2877 |
} |
|
2878 |
} |
|
2879 |
} |
|
27880
afb974a04396
8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents:
27474
diff
changeset
|
2880 |
FREE_C_HEAP_ARRAY(unsigned long, cpu_map); |
388 | 2881 |
} |
2882 |
||
2883 |
int os::Linux::get_node_by_cpu(int cpu_id) { |
|
2884 |
if (cpu_to_node() != NULL && cpu_id >= 0 && cpu_id < cpu_to_node()->length()) { |
|
2885 |
return cpu_to_node()->at(cpu_id); |
|
2886 |
} |
|
2887 |
return -1; |
|
2888 |
} |
|
2889 |
||
2890 |
GrowableArray<int>* os::Linux::_cpu_to_node; |
|
2891 |
os::Linux::sched_getcpu_func_t os::Linux::_sched_getcpu; |
|
2892 |
os::Linux::numa_node_to_cpus_func_t os::Linux::_numa_node_to_cpus; |
|
2893 |
os::Linux::numa_max_node_func_t os::Linux::_numa_max_node; |
|
2894 |
os::Linux::numa_available_func_t os::Linux::_numa_available; |
|
2895 |
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
|
2896 |
os::Linux::numa_interleave_memory_func_t os::Linux::_numa_interleave_memory; |
19726
c086d352d3f7
8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
mgerdin
parents:
18683
diff
changeset
|
2897 |
os::Linux::numa_set_bind_policy_func_t os::Linux::_numa_set_bind_policy; |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
2898 |
unsigned long* os::Linux::_numa_all_nodes; |
388 | 2899 |
|
13195 | 2900 |
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
|
2901 |
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
|
2902 |
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
|
2903 |
return res != (uintptr_t) MAP_FAILED; |
1 | 2904 |
} |
2905 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
2906 |
static address get_stack_commited_bottom(address bottom, size_t size) { |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2907 |
address nbot = bottom; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2908 |
address ntop = bottom + size; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2909 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2910 |
size_t page_sz = os::vm_page_size(); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2911 |
unsigned pages = size / page_sz; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2912 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2913 |
unsigned char vec[1]; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2914 |
unsigned imin = 1, imax = pages + 1, imid; |
22745 | 2915 |
int mincore_return_value = 0; |
2916 |
||
22749
8121b1d5f498
8033931: Several nightly tests failing with assert(imin < imax) failed: Unexpected page size
dcubed
parents:
22745
diff
changeset
|
2917 |
assert(imin <= imax, "Unexpected page size"); |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2918 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2919 |
while (imin < imax) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2920 |
imid = (imax + imin) / 2; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2921 |
nbot = ntop - (imid * page_sz); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2922 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2923 |
// 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
|
2924 |
// 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
|
2925 |
// 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
|
2926 |
// it returns -1,ENOMEM |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2927 |
mincore_return_value = mincore(nbot, page_sz, vec); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2928 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2929 |
if (mincore_return_value == -1) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2930 |
// Page is not mapped go up |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2931 |
// to find first mapped page |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2932 |
if (errno != EAGAIN) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2933 |
assert(errno == ENOMEM, "Unexpected mincore errno"); |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2934 |
imax = imid; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2935 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2936 |
} else { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2937 |
// Page is mapped go down |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2938 |
// to find first not mapped page |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2939 |
imin = imid + 1; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2940 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2941 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2942 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2943 |
nbot = nbot + page_sz; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2944 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2945 |
// Adjust stack bottom one page up if last checked page is not mapped |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2946 |
if (mincore_return_value == -1) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2947 |
nbot = nbot + page_sz; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2948 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2949 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2950 |
return nbot; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2951 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2952 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2953 |
|
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2954 |
// 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
|
2955 |
// 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
|
2956 |
// 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
|
2957 |
// 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
|
2958 |
// 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
|
2959 |
// 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
|
2960 |
// |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2961 |
// 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
|
2962 |
// 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
|
2963 |
// 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
|
2964 |
// 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
|
2965 |
// 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
|
2966 |
// create_stack_guard_pages() is called. |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2967 |
|
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2968 |
// 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
|
2969 |
// 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
|
2970 |
// 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
|
2971 |
// 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
|
2972 |
|
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2973 |
// 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
|
2974 |
// 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
|
2975 |
// 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
|
2976 |
// munmap() the guard pages we don't leave a hole in the stack |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2977 |
// mapping. This only affects the main/initial thread |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2978 |
|
13195 | 2979 |
bool os::pd_create_stack_guard_pages(char* addr, size_t size) { |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2980 |
if (os::Linux::is_initial_thread()) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2981 |
// 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
|
2982 |
// 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
|
2983 |
// we don't need to do anything special. |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2984 |
// Check it first, before calling heavy function. |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2985 |
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
|
2986 |
unsigned char vec[1]; |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2987 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2988 |
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
|
2989 |
// Fallback to slow path on all errors, including EAGAIN |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2990 |
stack_extent = (uintptr_t) get_stack_commited_bottom( |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2991 |
os::Linux::initial_thread_stack_bottom(), |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
2992 |
(size_t)addr - stack_extent); |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2993 |
} |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2994 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2995 |
if (stack_extent < (uintptr_t)addr) { |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
2996 |
::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
|
2997 |
} |
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2998 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
2999 |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
3000 |
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
|
3001 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3002 |
|
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3003 |
// 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
|
3004 |
// munmap()ping them. If not, just call uncommit_memory(). This only |
a4205fed5b18
6978641: Fix for 6929067 introduces additional overhead in thread creation/termination paths
dholmes
parents:
6176
diff
changeset
|
3005 |
// affects the main/initial thread, but guard against future OS changes |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3006 |
// It's safe to always unmap guard pages for initial thread because we |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3007 |
// always place it right after end of the mapped region |
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3008 |
|
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3009 |
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
|
3010 |
uintptr_t stack_extent, stack_base; |
19694
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3011 |
|
84bcddefd0d7
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
dsamersoff
parents:
19546
diff
changeset
|
3012 |
if (os::Linux::is_initial_thread()) { |
5085
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3013 |
return ::munmap(addr, size) == 0; |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3014 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3015 |
|
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3016 |
return os::uncommit_memory(addr, size); |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3017 |
} |
4f0c435f8c3c
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
4493
diff
changeset
|
3018 |
|
1 | 3019 |
// If 'fixed' is true, anon_mmap() will attempt to reserve anonymous memory |
3020 |
// at 'requested_addr'. If there are existing memory mappings at the same |
|
3021 |
// location, however, they will be overwritten. If 'fixed' is false, |
|
3022 |
// 'requested_addr' is only treated as a hint, the return value may or |
|
3023 |
// may not start from the requested address. Unlike Linux mmap(), this |
|
3024 |
// function returns NULL to indicate failure. |
|
3025 |
static char* anon_mmap(char* requested_addr, size_t bytes, bool fixed) { |
|
3026 |
char * addr; |
|
3027 |
int flags; |
|
3028 |
||
3029 |
flags = MAP_PRIVATE | MAP_NORESERVE | MAP_ANONYMOUS; |
|
3030 |
if (fixed) { |
|
3031 |
assert((uintptr_t)requested_addr % os::Linux::page_size() == 0, "unaligned address"); |
|
3032 |
flags |= MAP_FIXED; |
|
3033 |
} |
|
3034 |
||
17083 | 3035 |
// Map reserved/uncommitted pages PROT_NONE so we fail early if we |
3036 |
// touch an uncommitted page. Otherwise, the read/write might |
|
3037 |
// succeed if we have enough swap space to back the physical page. |
|
3038 |
addr = (char*)::mmap(requested_addr, bytes, PROT_NONE, |
|
1 | 3039 |
flags, -1, 0); |
3040 |
||
3041 |
return addr == MAP_FAILED ? NULL : addr; |
|
3042 |
} |
|
3043 |
||
3044 |
static int anon_munmap(char * addr, size_t size) { |
|
3045 |
return ::munmap(addr, size) == 0; |
|
3046 |
} |
|
3047 |
||
13195 | 3048 |
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
|
3049 |
size_t alignment_hint) { |
1 | 3050 |
return anon_mmap(requested_addr, bytes, (requested_addr != NULL)); |
3051 |
} |
|
3052 |
||
13195 | 3053 |
bool os::pd_release_memory(char* addr, size_t size) { |
1 | 3054 |
return anon_munmap(addr, size); |
3055 |
} |
|
3056 |
||
3057 |
static bool linux_mprotect(char* addr, size_t size, int prot) { |
|
3058 |
// Linux wants the mprotect address argument to be page aligned. |
|
3059 |
char* bottom = (char*)align_size_down((intptr_t)addr, os::Linux::page_size()); |
|
3060 |
||
3061 |
// According to SUSv3, mprotect() should only be used with mappings |
|
3062 |
// established by mmap(), and mmap() always maps whole pages. Unaligned |
|
3063 |
// 'addr' likely indicates problem in the VM (e.g. trying to change |
|
3064 |
// protection of malloc'ed or statically allocated memory). Check the |
|
3065 |
// caller if you hit this assert. |
|
3066 |
assert(addr == bottom, "sanity check"); |
|
3067 |
||
3068 |
size = align_size_up(pointer_delta(addr, bottom, 1) + size, os::Linux::page_size()); |
|
3069 |
return ::mprotect(bottom, size, prot) == 0; |
|
3070 |
} |
|
3071 |
||
823
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3072 |
// Set protections specified |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3073 |
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
|
3074 |
bool is_committed) { |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3075 |
unsigned int p = 0; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3076 |
switch (prot) { |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3077 |
case MEM_PROT_NONE: p = PROT_NONE; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3078 |
case MEM_PROT_READ: p = PROT_READ; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3079 |
case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3080 |
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
|
3081 |
default: |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3082 |
ShouldNotReachHere(); |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3083 |
} |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3084 |
// is_committed is unused. |
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
3085 |
return linux_mprotect(addr, bytes, p); |
1 | 3086 |
} |
3087 |
||
3088 |
bool os::guard_memory(char* addr, size_t size) { |
|
3089 |
return linux_mprotect(addr, size, PROT_NONE); |
|
3090 |
} |
|
3091 |
||
3092 |
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
|
3093 |
return linux_mprotect(addr, size, PROT_READ|PROT_WRITE); |
1 | 3094 |
} |
3095 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3096 |
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
|
3097 |
size_t page_size) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3098 |
bool result = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3099 |
void *p = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3100 |
MAP_ANONYMOUS|MAP_PRIVATE, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3101 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3102 |
if (p != MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3103 |
void *aligned_p = align_ptr_up(p, page_size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3104 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3105 |
result = madvise(aligned_p, page_size, MADV_HUGEPAGE) == 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3106 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3107 |
munmap(p, page_size * 2); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3108 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3109 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3110 |
if (warn && !result) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3111 |
warning("TransparentHugePages is not supported by the operating system."); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3112 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3113 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3114 |
return result; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3115 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3116 |
|
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3117 |
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
|
3118 |
bool result = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3119 |
void *p = mmap(NULL, page_size, PROT_READ|PROT_WRITE, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3120 |
MAP_ANONYMOUS|MAP_PRIVATE|MAP_HUGETLB, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3121 |
-1, 0); |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3122 |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
18025
diff
changeset
|
3123 |
if (p != MAP_FAILED) { |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3124 |
// 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
|
3125 |
FILE *fp = fopen("/proc/self/maps", "r"); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3126 |
if (fp) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3127 |
while (!feof(fp)) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3128 |
char chars[257]; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3129 |
long x = 0; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3130 |
if (fgets(chars, sizeof(chars), fp)) { |
9625 | 3131 |
if (sscanf(chars, "%lx-%*x", &x) == 1 |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3132 |
&& x == (long)p) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3133 |
if (strstr (chars, "hugepage")) { |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3134 |
result = true; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3135 |
break; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3136 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3137 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3138 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3139 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3140 |
fclose(fp); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3141 |
} |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3142 |
munmap(p, page_size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3143 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3144 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3145 |
if (warn && !result) { |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3146 |
warning("HugeTLBFS is not supported by the operating system."); |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3147 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3148 |
|
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3149 |
return result; |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3150 |
} |
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3151 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3152 |
// Set the coredump_filter bits to include largepages in core dump (bit 6) |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3153 |
// |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3154 |
// 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
|
3155 |
// |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3156 |
// - (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
|
3157 |
// - (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
|
3158 |
// - (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
|
3159 |
// - (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
|
3160 |
// - (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
|
3161 |
// 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
|
3162 |
// - (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
|
3163 |
// - (bit 6) hugetlb shared memory |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3164 |
// |
8119
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3165 |
static void set_coredump_filter(void) { |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3166 |
FILE *f; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3167 |
long cdm; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3168 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3169 |
if ((f = fopen("/proc/self/coredump_filter", "r+")) == NULL) { |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3170 |
return; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3171 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3172 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3173 |
if (fscanf(f, "%lx", &cdm) != 1) { |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3174 |
fclose(f); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3175 |
return; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3176 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3177 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3178 |
rewind(f); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3179 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3180 |
if ((cdm & LARGEPAGES_BIT) == 0) { |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3181 |
cdm |= LARGEPAGES_BIT; |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3182 |
fprintf(f, "%#lx", cdm); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3183 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3184 |
|
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3185 |
fclose(f); |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3186 |
} |
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3187 |
|
1 | 3188 |
// Large page support |
3189 |
||
3190 |
static size_t _large_page_size = 0; |
|
3191 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3192 |
size_t os::Linux::find_large_page_size() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3193 |
size_t large_page_size = 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3194 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3195 |
// 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
|
3196 |
// 2M or 4M page, depending on whether PAE (Physical Address Extensions) |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3197 |
// 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
|
3198 |
// page as large as 256M. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3199 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3200 |
// 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
|
3201 |
// for a line with the following format: |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3202 |
// Hugepagesize: 2048 kB |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3203 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3204 |
// 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
|
3205 |
// 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
|
3206 |
// the processor. |
1 | 3207 |
|
4013 | 3208 |
#ifndef ZERO |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3209 |
large_page_size = IA32_ONLY(4 * M) AMD64_ONLY(2 * M) IA64_ONLY(256 * M) SPARC_ONLY(4 * M) |
29474
81a5c5330d08
8072383: resolve conflicts between open and closed ports
dlong
parents:
29193
diff
changeset
|
3210 |
ARM32_ONLY(2 * M) PPC_ONLY(4 * M) AARCH64_ONLY(2 * M); |
4013 | 3211 |
#endif // ZERO |
1 | 3212 |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3213 |
FILE *fp = fopen("/proc/meminfo", "r"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3214 |
if (fp) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3215 |
while (!feof(fp)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3216 |
int x = 0; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3217 |
char buf[16]; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3218 |
if (fscanf(fp, "Hugepagesize: %d", &x) == 1) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3219 |
if (x && fgets(buf, sizeof(buf), fp) && strcmp(buf, " kB\n") == 0) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3220 |
large_page_size = x * K; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3221 |
break; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3222 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3223 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3224 |
// skip to next line |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3225 |
for (;;) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3226 |
int ch = fgetc(fp); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3227 |
if (ch == EOF || ch == (int)'\n') break; |
1 | 3228 |
} |
3229 |
} |
|
3230 |
} |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3231 |
fclose(fp); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3232 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3233 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3234 |
if (!FLAG_IS_DEFAULT(LargePageSizeInBytes) && LargePageSizeInBytes != large_page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3235 |
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
|
3236 |
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
|
3237 |
proper_unit_for_byte_size(large_page_size)); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3238 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3239 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3240 |
return large_page_size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3241 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3242 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3243 |
size_t os::Linux::setup_large_page_size() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3244 |
_large_page_size = Linux::find_large_page_size(); |
1 | 3245 |
const size_t default_page_size = (size_t)Linux::page_size(); |
3246 |
if (_large_page_size > default_page_size) { |
|
3247 |
_page_sizes[0] = _large_page_size; |
|
3248 |
_page_sizes[1] = default_page_size; |
|
3249 |
_page_sizes[2] = 0; |
|
3250 |
} |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3251 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3252 |
return _large_page_size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3253 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3254 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3255 |
bool os::Linux::setup_large_page_type(size_t page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3256 |
if (FLAG_IS_DEFAULT(UseHugeTLBFS) && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3257 |
FLAG_IS_DEFAULT(UseSHM) && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3258 |
FLAG_IS_DEFAULT(UseTransparentHugePages)) { |
20400
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3259 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3260 |
// 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
|
3261 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3262 |
// Try UseHugeTLBFS and then UseSHM. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3263 |
UseHugeTLBFS = UseSHM = true; |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3264 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3265 |
// Don't try UseTransparentHugePages since there are known |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3266 |
// 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
|
3267 |
UseTransparentHugePages = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3268 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3269 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3270 |
if (UseTransparentHugePages) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3271 |
bool warn_on_failure = !FLAG_IS_DEFAULT(UseTransparentHugePages); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3272 |
if (transparent_huge_pages_sanity_check(warn_on_failure, page_size)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3273 |
UseHugeTLBFS = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3274 |
UseSHM = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3275 |
return true; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3276 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3277 |
UseTransparentHugePages = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3278 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3279 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3280 |
if (UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3281 |
bool warn_on_failure = !FLAG_IS_DEFAULT(UseHugeTLBFS); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3282 |
if (hugetlbfs_sanity_check(warn_on_failure, page_size)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3283 |
UseSHM = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3284 |
return true; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3285 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3286 |
UseHugeTLBFS = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3287 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3288 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3289 |
return UseSHM; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3290 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3291 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3292 |
void os::large_page_init() { |
20400
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3293 |
if (!UseLargePages && |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3294 |
!UseTransparentHugePages && |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3295 |
!UseHugeTLBFS && |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3296 |
!UseSHM) { |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3297 |
// Not using large pages. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3298 |
return; |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3299 |
} |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3300 |
|
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3301 |
if (!FLAG_IS_DEFAULT(UseLargePages) && !UseLargePages) { |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3302 |
// The user explicitly turned off large pages. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3303 |
// Ignore the rest of the large pages flags. |
1c658ebcb3c1
8024838: Significant slowdown due to transparent huge pages
stefank
parents:
20005
diff
changeset
|
3304 |
UseTransparentHugePages = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3305 |
UseHugeTLBFS = false; |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3306 |
UseSHM = false; |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3307 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3308 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3309 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3310 |
size_t large_page_size = Linux::setup_large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3311 |
UseLargePages = Linux::setup_large_page_type(large_page_size); |
9335
7bdd2a3ab3d8
7034464: Support transparent large pages on Linux
iveresov
parents:
8476
diff
changeset
|
3312 |
|
8119
81eef1b06988
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
8108
diff
changeset
|
3313 |
set_coredump_filter(); |
1 | 3314 |
} |
3315 |
||
3316 |
#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
|
3317 |
#define SHM_HUGETLB 04000 |
1 | 3318 |
#endif |
3319 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3320 |
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
|
3321 |
char* req_addr, bool exec) { |
2268 | 3322 |
// "exec" is passed in but not used. Creating the shared image for |
3323 |
// 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
|
3324 |
assert(UseLargePages && UseSHM, "only for SHM large pages"); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3325 |
assert(is_ptr_aligned(req_addr, os::large_page_size()), "Unaligned address"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3326 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3327 |
if (!is_size_aligned(bytes, os::large_page_size()) || alignment > os::large_page_size()) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3328 |
return NULL; // Fallback to small pages. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3329 |
} |
1 | 3330 |
|
3331 |
key_t key = IPC_PRIVATE; |
|
3332 |
char *addr; |
|
3333 |
||
3334 |
bool warn_on_failure = UseLargePages && |
|
3335 |
(!FLAG_IS_DEFAULT(UseLargePages) || |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3336 |
!FLAG_IS_DEFAULT(UseSHM) || |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3337 |
!FLAG_IS_DEFAULT(LargePageSizeInBytes)); |
1 | 3338 |
char msg[128]; |
3339 |
||
3340 |
// Create a large shared memory region to attach to based on size. |
|
3341 |
// Currently, size is the total size of the heap |
|
3342 |
int shmid = shmget(key, bytes, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W); |
|
3343 |
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
|
3344 |
// 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
|
3345 |
// 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
|
3346 |
// > 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
|
3347 |
// > 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
|
3348 |
// 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
|
3349 |
// > 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
|
3350 |
// > 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
|
3351 |
// 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
|
3352 |
// 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
|
3353 |
// 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
|
3354 |
// 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
|
3355 |
// 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
|
3356 |
// 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
|
3357 |
// the system is still "fresh". |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3358 |
if (warn_on_failure) { |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3359 |
jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3360 |
warning("%s", msg); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3361 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3362 |
return NULL; |
1 | 3363 |
} |
3364 |
||
3365 |
// attach to the region |
|
5532
34c4ef11dbed
6951686: Using large pages on Linux prevents zero based compressed oops
kvn
parents:
5413
diff
changeset
|
3366 |
addr = (char*)shmat(shmid, req_addr, 0); |
1 | 3367 |
int err = errno; |
3368 |
||
3369 |
// Remove shmid. If shmat() is successful, the actual shared memory segment |
|
3370 |
// will be deleted when it's detached by shmdt() or when the process |
|
3371 |
// terminates. If shmat() is not successful this will remove the shared |
|
3372 |
// segment immediately. |
|
3373 |
shmctl(shmid, IPC_RMID, NULL); |
|
3374 |
||
3375 |
if ((intptr_t)addr == -1) { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3376 |
if (warn_on_failure) { |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3377 |
jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3378 |
warning("%s", msg); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3379 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
3380 |
return NULL; |
1 | 3381 |
} |
3382 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3383 |
return addr; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3384 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3385 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3386 |
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
|
3387 |
int error) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3388 |
assert(error == ENOMEM, "Only expect to fail if no memory is available"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3389 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3390 |
bool warn_on_failure = UseLargePages && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3391 |
(!FLAG_IS_DEFAULT(UseLargePages) || |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3392 |
!FLAG_IS_DEFAULT(UseHugeTLBFS) || |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3393 |
!FLAG_IS_DEFAULT(LargePageSizeInBytes)); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3394 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3395 |
if (warn_on_failure) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3396 |
char msg[128]; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3397 |
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
|
3398 |
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
|
3399 |
warning("%s", msg); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3400 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3401 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3402 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3403 |
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
|
3404 |
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
|
3405 |
bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3406 |
assert(UseLargePages && UseHugeTLBFS, "only for Huge TLBFS large pages"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3407 |
assert(is_size_aligned(bytes, os::large_page_size()), "Unaligned size"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3408 |
assert(is_ptr_aligned(req_addr, os::large_page_size()), "Unaligned address"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3409 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3410 |
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
|
3411 |
char* addr = (char*)::mmap(req_addr, bytes, prot, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3412 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3413 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3414 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3415 |
if (addr == MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3416 |
warn_on_large_pages_failure(req_addr, bytes, errno); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3417 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3418 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3419 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3420 |
assert(is_ptr_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
|
3421 |
|
1 | 3422 |
return addr; |
3423 |
} |
|
3424 |
||
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3425 |
// Helper for os::Linux::reserve_memory_special_huge_tlbfs_mixed(). |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3426 |
// Allocate (using mmap, NO_RESERVE, with small pages) at either a given request address |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3427 |
// (req_addr != NULL) or with a given alignment. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3428 |
// - 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
|
3429 |
// - 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
|
3430 |
// - 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
|
3431 |
// 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
|
3432 |
// 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
|
3433 |
// req_addr or NULL. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3434 |
static char* anon_mmap_aligned(size_t bytes, size_t alignment, char* req_addr) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3435 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3436 |
size_t extra_size = bytes; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3437 |
if (req_addr == NULL && alignment > 0) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3438 |
extra_size += alignment; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3439 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3440 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3441 |
char* start = (char*) ::mmap(req_addr, extra_size, PROT_NONE, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3442 |
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
|
3443 |
-1, 0); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3444 |
if (start == MAP_FAILED) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3445 |
start = NULL; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3446 |
} else { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3447 |
if (req_addr != NULL) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3448 |
if (start != req_addr) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3449 |
::munmap(start, extra_size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3450 |
start = NULL; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3451 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3452 |
} else { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3453 |
char* const start_aligned = (char*) align_ptr_up(start, alignment); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3454 |
char* const end_aligned = start_aligned + bytes; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3455 |
char* const end = start + extra_size; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3456 |
if (start_aligned > start) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3457 |
::munmap(start, start_aligned - start); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3458 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3459 |
if (end_aligned < end) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3460 |
::munmap(end_aligned, end - end_aligned); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3461 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3462 |
start = start_aligned; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3463 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3464 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3465 |
return start; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3466 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3467 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3468 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3469 |
// 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
|
3470 |
// - 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
|
3471 |
// - 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
|
3472 |
// - 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
|
3473 |
// 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
|
3474 |
// 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
|
3475 |
// 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
|
3476 |
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
|
3477 |
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
|
3478 |
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
|
3479 |
bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3480 |
size_t large_page_size = os::large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3481 |
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
|
3482 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3483 |
assert(is_ptr_aligned(req_addr, alignment), "Must be"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3484 |
assert(is_size_aligned(bytes, alignment), "Must be"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3485 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3486 |
// 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
|
3487 |
char* const start = anon_mmap_aligned(bytes, alignment, req_addr); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3488 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3489 |
if (start == NULL) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3490 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3491 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3492 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3493 |
assert(is_ptr_aligned(start, alignment), "Must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3494 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3495 |
char* end = start + bytes; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3496 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3497 |
// Find the regions of the allocated chunk that can be promoted to large pages. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3498 |
char* lp_start = (char*)align_ptr_up(start, large_page_size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3499 |
char* lp_end = (char*)align_ptr_down(end, large_page_size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3500 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3501 |
size_t lp_bytes = lp_end - lp_start; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3502 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3503 |
assert(is_size_aligned(lp_bytes, large_page_size), "Must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3504 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3505 |
if (lp_bytes == 0) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3506 |
// 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
|
3507 |
// Fall back to allocate a non-special area. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3508 |
::munmap(start, end - start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3509 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3510 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3511 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3512 |
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
|
3513 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3514 |
void* result; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3515 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3516 |
// Commit small-paged leading area. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3517 |
if (start != lp_start) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3518 |
result = ::mmap(start, lp_start - start, prot, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3519 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3520 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3521 |
if (result == MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3522 |
::munmap(lp_start, end - lp_start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3523 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3524 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3525 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3526 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3527 |
// Commit large-paged area. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3528 |
result = ::mmap(lp_start, lp_bytes, prot, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3529 |
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_HUGETLB, |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3530 |
-1, 0); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3531 |
if (result == MAP_FAILED) { |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3532 |
warn_on_large_pages_failure(lp_start, lp_bytes, errno); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3533 |
// 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
|
3534 |
// have regions before and after with small pages. Release these regions. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3535 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3536 |
// | mapped | unmapped | mapped | |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3537 |
// ^ ^ ^ ^ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3538 |
// start lp_start lp_end end |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3539 |
// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3540 |
::munmap(start, lp_start - start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3541 |
::munmap(lp_end, end - lp_end); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3542 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3543 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3544 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3545 |
// Commit small-paged trailing area. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3546 |
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
|
3547 |
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
|
3548 |
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
|
3549 |
-1, 0); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3550 |
if (result == MAP_FAILED) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3551 |
::munmap(start, lp_end - start); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3552 |
return NULL; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3553 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3554 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3555 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3556 |
return start; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3557 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3558 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3559 |
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
|
3560 |
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
|
3561 |
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
|
3562 |
bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3563 |
assert(UseLargePages && UseHugeTLBFS, "only for Huge TLBFS large pages"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3564 |
assert(is_ptr_aligned(req_addr, alignment), "Must be"); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
3565 |
assert(is_size_aligned(alignment, os::vm_allocation_granularity()), "Must be"); |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3566 |
assert(is_power_of_2(os::large_page_size()), "Must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3567 |
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
|
3568 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3569 |
if (is_size_aligned(bytes, os::large_page_size()) && alignment <= os::large_page_size()) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3570 |
return reserve_memory_special_huge_tlbfs_only(bytes, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3571 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3572 |
return reserve_memory_special_huge_tlbfs_mixed(bytes, alignment, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3573 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3574 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3575 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3576 |
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
|
3577 |
char* req_addr, bool exec) { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3578 |
assert(UseLargePages, "only for large pages"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3579 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3580 |
char* addr; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3581 |
if (UseSHM) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3582 |
addr = os::Linux::reserve_memory_special_shm(bytes, alignment, req_addr, exec); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3583 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3584 |
assert(UseHugeTLBFS, "must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3585 |
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
|
3586 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3587 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3588 |
if (addr != NULL) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3589 |
if (UseNUMAInterleaving) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3590 |
numa_make_global(addr, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3591 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3592 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3593 |
// The memory is committed |
25946 | 3594 |
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
|
3595 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3596 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3597 |
return addr; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3598 |
} |
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 |
bool os::Linux::release_memory_special_shm(char* base, size_t bytes) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3601 |
// 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
|
3602 |
return shmdt(base) == 0; |
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 |
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
|
3606 |
return pd_release_memory(base, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3607 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3608 |
|
1 | 3609 |
bool os::release_memory_special(char* base, size_t bytes) { |
25946 | 3610 |
bool res; |
3611 |
if (MemTracker::tracking_level() > NMT_minimal) { |
|
3612 |
Tracker tkr = MemTracker::get_virtual_memory_release_tracker(); |
|
3613 |
res = os::Linux::release_memory_special_impl(base, bytes); |
|
3614 |
if (res) { |
|
3615 |
tkr.record((address)base, bytes); |
|
3616 |
} |
|
3617 |
||
3618 |
} else { |
|
3619 |
res = os::Linux::release_memory_special_impl(base, bytes); |
|
3620 |
} |
|
3621 |
return res; |
|
3622 |
} |
|
3623 |
||
3624 |
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
|
3625 |
assert(UseLargePages, "only for large pages"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3626 |
bool res; |
25946 | 3627 |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3628 |
if (UseSHM) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3629 |
res = os::Linux::release_memory_special_shm(base, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3630 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3631 |
assert(UseHugeTLBFS, "must be"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3632 |
res = os::Linux::release_memory_special_huge_tlbfs(base, bytes); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3633 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3634 |
return res; |
1 | 3635 |
} |
3636 |
||
3637 |
size_t os::large_page_size() { |
|
3638 |
return _large_page_size; |
|
3639 |
} |
|
3640 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3641 |
// 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
|
3642 |
// memory. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3643 |
// HugeTLBFS allows application to commit large page memory on demand. |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3644 |
// However, when committing memory with HugeTLBFS fails, the region |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3645 |
// that was supposed to be committed will lose the old reservation |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3646 |
// and allow other threads to steal that memory region. Because of this |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3647 |
// behavior we can't commit HugeTLBFS memory. |
1 | 3648 |
bool os::can_commit_large_page_memory() { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3649 |
return UseTransparentHugePages; |
1 | 3650 |
} |
3651 |
||
252
050143a0dbfb
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
235
diff
changeset
|
3652 |
bool os::can_execute_large_page_memory() { |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
3653 |
return UseTransparentHugePages || UseHugeTLBFS; |
252
050143a0dbfb
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
235
diff
changeset
|
3654 |
} |
050143a0dbfb
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
235
diff
changeset
|
3655 |
|
1 | 3656 |
// Reserve memory at an arbitrary address, only if that area is |
3657 |
// available (and not reserved for something else). |
|
3658 |
||
13195 | 3659 |
char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
1 | 3660 |
const int max_tries = 10; |
3661 |
char* base[max_tries]; |
|
3662 |
size_t size[max_tries]; |
|
3663 |
const size_t gap = 0x000000; |
|
3664 |
||
3665 |
// Assert only that the size is a multiple of the page size, since |
|
3666 |
// that's all that mmap requires, and since that's all we really know |
|
3667 |
// about at this low abstraction level. If we need higher alignment, |
|
3668 |
// we can either pass an alignment to this method or verify alignment |
|
3669 |
// in one of the methods further up the call chain. See bug 5044738. |
|
3670 |
assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); |
|
3671 |
||
3672 |
// 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
|
3673 |
// right spot. |
1 | 3674 |
|
3675 |
// Linux mmap allows caller to pass an address as hint; give it a try first, |
|
3676 |
// if kernel honors the hint then we can return immediately. |
|
3677 |
char * addr = anon_mmap(requested_addr, bytes, false); |
|
3678 |
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
|
3679 |
return requested_addr; |
1 | 3680 |
} |
3681 |
||
3682 |
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
|
3683 |
// 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
|
3684 |
anon_munmap(addr, bytes); |
1 | 3685 |
} |
3686 |
||
3687 |
int i; |
|
3688 |
for (i = 0; i < max_tries; ++i) { |
|
3689 |
base[i] = reserve_memory(bytes); |
|
3690 |
||
3691 |
if (base[i] != NULL) { |
|
3692 |
// Is this the block we wanted? |
|
3693 |
if (base[i] == requested_addr) { |
|
3694 |
size[i] = bytes; |
|
3695 |
break; |
|
3696 |
} |
|
3697 |
||
3698 |
// Does this overlap the block we wanted? Give back the overlapped |
|
3699 |
// parts and try again. |
|
3700 |
||
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
3701 |
ptrdiff_t top_overlap = requested_addr + (bytes + gap) - base[i]; |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
3702 |
if (top_overlap >= 0 && (size_t)top_overlap < bytes) { |
1 | 3703 |
unmap_memory(base[i], top_overlap); |
3704 |
base[i] += top_overlap; |
|
3705 |
size[i] = bytes - top_overlap; |
|
3706 |
} else { |
|
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
3707 |
ptrdiff_t bottom_overlap = base[i] + bytes - requested_addr; |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
3708 |
if (bottom_overlap >= 0 && (size_t)bottom_overlap < bytes) { |
1 | 3709 |
unmap_memory(requested_addr, bottom_overlap); |
3710 |
size[i] = bytes - bottom_overlap; |
|
3711 |
} else { |
|
3712 |
size[i] = bytes; |
|
3713 |
} |
|
3714 |
} |
|
3715 |
} |
|
3716 |
} |
|
3717 |
||
3718 |
// Give back the unused reserved pieces. |
|
3719 |
||
3720 |
for (int j = 0; j < i; ++j) { |
|
3721 |
if (base[j] != NULL) { |
|
3722 |
unmap_memory(base[j], size[j]); |
|
3723 |
} |
|
3724 |
} |
|
3725 |
||
3726 |
if (i < max_tries) { |
|
3727 |
return requested_addr; |
|
3728 |
} else { |
|
3729 |
return NULL; |
|
3730 |
} |
|
3731 |
} |
|
3732 |
||
3733 |
size_t os::read(int fd, void *buf, unsigned int nBytes) { |
|
3734 |
return ::read(fd, buf, nBytes); |
|
3735 |
} |
|
3736 |
||
27562 | 3737 |
size_t os::read_at(int fd, void *buf, unsigned int nBytes, jlong offset) { |
3738 |
return ::pread(fd, buf, nBytes, offset); |
|
3739 |
} |
|
3740 |
||
22533
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3741 |
// Short sleep, direct OS call. |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3742 |
// |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3743 |
// Note: certain versions of Linux CFS scheduler (since 2.6.23) do not guarantee |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3744 |
// sched_yield(2) will actually give up the CPU: |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3745 |
// |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3746 |
// * Alone on this pariticular CPU, keeps running. |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3747 |
// * Before the introduction of "skip_buddy" with "compat_yield" disabled |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3748 |
// (pre 2.6.39). |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3749 |
// |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3750 |
// So calling this with 0 is an alternative. |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3751 |
// |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3752 |
void os::naked_short_sleep(jlong ms) { |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3753 |
struct timespec req; |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3754 |
|
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3755 |
assert(ms < 1000, "Un-interruptable sleep, short time use only"); |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3756 |
req.tv_sec = 0; |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3757 |
if (ms > 0) { |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3758 |
req.tv_nsec = (ms % 1000) * 1000000; |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3759 |
} else { |
22533
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3760 |
req.tv_nsec = 1; |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3761 |
} |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3762 |
|
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3763 |
nanosleep(&req, NULL); |
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3764 |
|
76088853a2eb
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
22528
diff
changeset
|
3765 |
return; |
1 | 3766 |
} |
3767 |
||
3768 |
// Sleep forever; naked call to OS-specific sleep; use with CAUTION |
|
3769 |
void os::infinite_sleep() { |
|
3770 |
while (true) { // sleep forever ... |
|
3771 |
::sleep(100); // ... 100 seconds at a time |
|
3772 |
} |
|
3773 |
} |
|
3774 |
||
3775 |
// Used to convert frequent JVM_Yield() to nops |
|
3776 |
bool os::dont_yield() { |
|
3777 |
return DontYieldALot; |
|
3778 |
} |
|
3779 |
||
25477
7dad9f95fd31
8047714: Fix for JDK-6546236 made Solaris os::yield() a no-op
fparain
parents:
25472
diff
changeset
|
3780 |
void os::naked_yield() { |
1 | 3781 |
sched_yield(); |
3782 |
} |
|
3783 |
||
3784 |
//////////////////////////////////////////////////////////////////////////////// |
|
3785 |
// thread priority support |
|
3786 |
||
3787 |
// Note: Normal Linux applications are run with SCHED_OTHER policy. SCHED_OTHER |
|
3788 |
// only supports dynamic priority, static priority must be zero. For real-time |
|
3789 |
// applications, Linux supports SCHED_RR which allows static priority (1-99). |
|
3790 |
// However, for large multi-threaded applications, SCHED_RR is not only slower |
|
3791 |
// than SCHED_OTHER, but also very unstable (my volano tests hang hard 4 out |
|
3792 |
// of 5 runs - Sep 2005). |
|
3793 |
// |
|
3794 |
// The following code actually changes the niceness of kernel-thread/LWP. It |
|
3795 |
// has an assumption that setpriority() only modifies one kernel-thread/LWP, |
|
3796 |
// not the entire user process, and user level threads are 1:1 mapped to kernel |
|
3797 |
// threads. It has always been the case, but could change in the future. For |
|
3798 |
// this reason, the code should not be used as default (ThreadPriorityPolicy=0). |
|
3799 |
// It is only used when ThreadPriorityPolicy=1 and requires root privilege. |
|
3800 |
||
11601
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
3801 |
int os::java_to_os_priority[CriticalPriority + 1] = { |
1 | 3802 |
19, // 0 Entry should never be used |
3803 |
||
3804 |
4, // 1 MinPriority |
|
3805 |
3, // 2 |
|
3806 |
2, // 3 |
|
3807 |
||
3808 |
1, // 4 |
|
3809 |
0, // 5 NormPriority |
|
3810 |
-1, // 6 |
|
3811 |
||
3812 |
-2, // 7 |
|
3813 |
-3, // 8 |
|
3814 |
-4, // 9 NearMaxPriority |
|
3815 |
||
11601
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
3816 |
-5, // 10 MaxPriority |
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
3817 |
|
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
3818 |
-5 // 11 CriticalPriority |
1 | 3819 |
}; |
3820 |
||
3821 |
static int prio_init() { |
|
3822 |
if (ThreadPriorityPolicy == 1) { |
|
3823 |
// Only root can raise thread priority. Don't allow ThreadPriorityPolicy=1 |
|
3824 |
// if effective uid is not root. Perhaps, a more elegant way of doing |
|
3825 |
// this is to test CAP_SYS_NICE capability, but that will require libcap.so |
|
3826 |
if (geteuid() != 0) { |
|
3827 |
if (!FLAG_IS_DEFAULT(ThreadPriorityPolicy)) { |
|
3828 |
warning("-XX:ThreadPriorityPolicy requires root privilege on Linux"); |
|
3829 |
} |
|
3830 |
ThreadPriorityPolicy = 0; |
|
3831 |
} |
|
3832 |
} |
|
11601
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
3833 |
if (UseCriticalJavaThreadPriority) { |
f359304c1856
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
11483
diff
changeset
|
3834 |
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
|
3835 |
} |
1 | 3836 |
return 0; |
3837 |
} |
|
3838 |
||
3839 |
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
|
3840 |
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) return OS_OK; |
1 | 3841 |
|
3842 |
int ret = setpriority(PRIO_PROCESS, thread->osthread()->thread_id(), newpri); |
|
3843 |
return (ret == 0) ? OS_OK : OS_ERR; |
|
3844 |
} |
|
3845 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3846 |
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
|
3847 |
int *priority_ptr) { |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
3848 |
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) { |
1 | 3849 |
*priority_ptr = java_to_os_priority[NormPriority]; |
3850 |
return OS_OK; |
|
3851 |
} |
|
3852 |
||
3853 |
errno = 0; |
|
3854 |
*priority_ptr = getpriority(PRIO_PROCESS, thread->osthread()->thread_id()); |
|
3855 |
return (*priority_ptr != -1 || errno == 0 ? OS_OK : OS_ERR); |
|
3856 |
} |
|
3857 |
||
3858 |
// Hint to the underlying OS that a task switch would not be good. |
|
3859 |
// Void return because it's a hint and can fail. |
|
3860 |
void os::hint_no_preempt() {} |
|
3861 |
||
3862 |
//////////////////////////////////////////////////////////////////////////////// |
|
3863 |
// suspend/resume support |
|
3864 |
||
3865 |
// the low-level signal-based suspend/resume support is a remnant from the |
|
3866 |
// old VM-suspension that used to be for java-suspension, safepoints etc, |
|
3867 |
// within hotspot. Now there is a single use-case for this: |
|
3868 |
// - calling get_thread_pc() on the VMThread by the flat-profiler task |
|
3869 |
// that runs in the watcher thread. |
|
3870 |
// The remaining code is greatly simplified from the more general suspension |
|
3871 |
// code that used to be used. |
|
3872 |
// |
|
3873 |
// The protocol is quite simple: |
|
3874 |
// - suspend: |
|
3875 |
// - sends a signal to the target thread |
|
3876 |
// - polls the suspend state of the osthread using a yield loop |
|
3877 |
// - target thread signal handler (SR_handler) sets suspend state |
|
3878 |
// and blocks in sigsuspend until continued |
|
3879 |
// - resume: |
|
3880 |
// - sets target osthread state to continue |
|
3881 |
// - sends signal to end the sigsuspend loop in the SR_handler |
|
3882 |
// |
|
3883 |
// Note that the SR_lock plays no role in this suspend/resume protocol. |
|
3884 |
||
3885 |
static void resume_clear_context(OSThread *osthread) { |
|
3886 |
osthread->set_ucontext(NULL); |
|
3887 |
osthread->set_siginfo(NULL); |
|
3888 |
} |
|
3889 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3890 |
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
|
3891 |
ucontext_t* context) { |
1 | 3892 |
osthread->set_ucontext(context); |
3893 |
osthread->set_siginfo(siginfo); |
|
3894 |
} |
|
3895 |
||
3896 |
// Handler function invoked when a thread's execution is suspended or |
|
3897 |
// resumed. We have to be careful that only async-safe functions are |
|
3898 |
// called here (Note: most pthread functions are not async safe and |
|
3899 |
// should be avoided.) |
|
3900 |
// |
|
3901 |
// Note: sigwait() is a more natural fit than sigsuspend() from an |
|
3902 |
// interface point of view, but sigwait() prevents the signal hander |
|
3903 |
// from being run. libpthread would get very confused by not having |
|
3904 |
// its signal handlers run and prevents sigwait()'s use with the |
|
3905 |
// mutex granting granting signal. |
|
3906 |
// |
|
18025 | 3907 |
// Currently only ever called on the VMThread and JavaThreads (PC sampling) |
1 | 3908 |
// |
3909 |
static void SR_handler(int sig, siginfo_t* siginfo, ucontext_t* context) { |
|
3910 |
// Save and restore errno to avoid confusing native code with EINTR |
|
3911 |
// after sigsuspend. |
|
3912 |
int old_errno = errno; |
|
3913 |
||
3914 |
Thread* thread = Thread::current(); |
|
3915 |
OSThread* osthread = thread->osthread(); |
|
18025 | 3916 |
assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); |
3917 |
||
3918 |
os::SuspendResume::State current = osthread->sr.state(); |
|
3919 |
if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { |
|
1 | 3920 |
suspend_save_context(osthread, siginfo, context); |
3921 |
||
18025 | 3922 |
// attempt to switch the state, we assume we had a SUSPEND_REQUEST |
3923 |
os::SuspendResume::State state = osthread->sr.suspended(); |
|
3924 |
if (state == os::SuspendResume::SR_SUSPENDED) { |
|
3925 |
sigset_t suspend_set; // signals for sigsuspend() |
|
3926 |
||
3927 |
// get current set of blocked signals and unblock resume signal |
|
3928 |
pthread_sigmask(SIG_BLOCK, NULL, &suspend_set); |
|
3929 |
sigdelset(&suspend_set, SR_signum); |
|
3930 |
||
3931 |
sr_semaphore.signal(); |
|
3932 |
// wait here until we are resumed |
|
3933 |
while (1) { |
|
3934 |
sigsuspend(&suspend_set); |
|
3935 |
||
3936 |
os::SuspendResume::State result = osthread->sr.running(); |
|
3937 |
if (result == os::SuspendResume::SR_RUNNING) { |
|
3938 |
sr_semaphore.signal(); |
|
3939 |
break; |
|
3940 |
} |
|
3941 |
} |
|
3942 |
||
3943 |
} else if (state == os::SuspendResume::SR_RUNNING) { |
|
3944 |
// request was cancelled, continue |
|
3945 |
} else { |
|
3946 |
ShouldNotReachHere(); |
|
3947 |
} |
|
1 | 3948 |
|
3949 |
resume_clear_context(osthread); |
|
18025 | 3950 |
} else if (current == os::SuspendResume::SR_RUNNING) { |
3951 |
// request was cancelled, continue |
|
3952 |
} else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { |
|
3953 |
// ignore |
|
1 | 3954 |
} else { |
18025 | 3955 |
// ignore |
1 | 3956 |
} |
3957 |
||
3958 |
errno = old_errno; |
|
3959 |
} |
|
3960 |
||
3961 |
static int SR_initialize() { |
|
3962 |
struct sigaction act; |
|
3963 |
char *s; |
|
34145 | 3964 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3965 |
// Get signal number to use for suspend/resume |
1 | 3966 |
if ((s = ::getenv("_JAVA_SR_SIGNUM")) != 0) { |
3967 |
int sig = ::strtol(s, 0, 10); |
|
34145 | 3968 |
if (sig > MAX2(SIGSEGV, SIGBUS) && // See 4355769. |
3969 |
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
|
3970 |
SR_signum = sig; |
34145 | 3971 |
} else { |
3972 |
warning("You set _JAVA_SR_SIGNUM=%d. It must be in range [%d, %d]. Using %d instead.", |
|
3973 |
sig, MAX2(SIGSEGV, SIGBUS)+1, NSIG-1, SR_signum); |
|
1 | 3974 |
} |
3975 |
} |
|
3976 |
||
3977 |
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
|
3978 |
"SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769"); |
1 | 3979 |
|
3980 |
sigemptyset(&SR_sigset); |
|
3981 |
sigaddset(&SR_sigset, SR_signum); |
|
3982 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
3983 |
// Set up signal handler for suspend/resume |
1 | 3984 |
act.sa_flags = SA_RESTART|SA_SIGINFO; |
3985 |
act.sa_handler = (void (*)(int)) SR_handler; |
|
3986 |
||
3987 |
// SR_signum is blocked by default. |
|
3988 |
// 4528190 - We also need to block pthread restart signal (32 on all |
|
3989 |
// supported Linux platforms). Note that LinuxThreads need to block |
|
3990 |
// this signal for all threads to work properly. So we don't have |
|
3991 |
// to use hard-coded signal number when setting up the mask. |
|
3992 |
pthread_sigmask(SIG_BLOCK, NULL, &act.sa_mask); |
|
3993 |
||
3994 |
if (sigaction(SR_signum, &act, 0) == -1) { |
|
3995 |
return -1; |
|
3996 |
} |
|
3997 |
||
3998 |
// Save signal flag |
|
3999 |
os::Linux::set_our_sigflags(SR_signum, act.sa_flags); |
|
4000 |
return 0; |
|
4001 |
} |
|
4002 |
||
18025 | 4003 |
static int sr_notify(OSThread* osthread) { |
4004 |
int status = pthread_kill(osthread->pthread_id(), SR_signum); |
|
4005 |
assert_status(status == 0, status, "pthread_kill"); |
|
4006 |
return status; |
|
4007 |
} |
|
4008 |
||
4009 |
// "Randomly" selected value for how long we want to spin |
|
4010 |
// before bailing out on suspending a thread, also how often |
|
4011 |
// we send a signal to a thread we want to resume |
|
4012 |
static const int RANDOMLY_LARGE_INTEGER = 1000000; |
|
4013 |
static const int RANDOMLY_LARGE_INTEGER2 = 100; |
|
1 | 4014 |
|
4015 |
// returns true on success and false on error - really an error is fatal |
|
4016 |
// but this seems the normal response to library errors |
|
4017 |
static bool do_suspend(OSThread* osthread) { |
|
18025 | 4018 |
assert(osthread->sr.is_running(), "thread should be running"); |
4019 |
assert(!sr_semaphore.trywait(), "semaphore has invalid state"); |
|
4020 |
||
1 | 4021 |
// mark as suspended and send signal |
18025 | 4022 |
if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { |
4023 |
// failed to switch, state wasn't running? |
|
4024 |
ShouldNotReachHere(); |
|
4025 |
return false; |
|
4026 |
} |
|
4027 |
||
4028 |
if (sr_notify(osthread) != 0) { |
|
4029 |
ShouldNotReachHere(); |
|
4030 |
} |
|
4031 |
||
4032 |
// managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED |
|
4033 |
while (true) { |
|
4034 |
if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { |
|
4035 |
break; |
|
4036 |
} else { |
|
4037 |
// timeout |
|
4038 |
os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); |
|
4039 |
if (cancelled == os::SuspendResume::SR_RUNNING) { |
|
4040 |
return false; |
|
4041 |
} else if (cancelled == os::SuspendResume::SR_SUSPENDED) { |
|
4042 |
// make sure that we consume the signal on the semaphore as well |
|
4043 |
sr_semaphore.wait(); |
|
4044 |
break; |
|
4045 |
} else { |
|
4046 |
ShouldNotReachHere(); |
|
4047 |
return false; |
|
4048 |
} |
|
1 | 4049 |
} |
18025 | 4050 |
} |
4051 |
||
4052 |
guarantee(osthread->sr.is_suspended(), "Must be suspended"); |
|
4053 |
return true; |
|
1 | 4054 |
} |
4055 |
||
4056 |
static void do_resume(OSThread* osthread) { |
|
4057 |
assert(osthread->sr.is_suspended(), "thread should be suspended"); |
|
18025 | 4058 |
assert(!sr_semaphore.trywait(), "invalid semaphore state"); |
4059 |
||
4060 |
if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { |
|
4061 |
// failed to switch to WAKEUP_REQUEST |
|
4062 |
ShouldNotReachHere(); |
|
4063 |
return; |
|
4064 |
} |
|
4065 |
||
4066 |
while (true) { |
|
4067 |
if (sr_notify(osthread) == 0) { |
|
4068 |
if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { |
|
4069 |
if (osthread->sr.is_running()) { |
|
4070 |
return; |
|
4071 |
} |
|
4072 |
} |
|
4073 |
} else { |
|
4074 |
ShouldNotReachHere(); |
|
1 | 4075 |
} |
4076 |
} |
|
18025 | 4077 |
|
4078 |
guarantee(osthread->sr.is_running(), "Must be running!"); |
|
1 | 4079 |
} |
4080 |
||
4081 |
/////////////////////////////////////////////////////////////////////////////////// |
|
4082 |
// signal handling (except suspend/resume) |
|
4083 |
||
4084 |
// This routine may be used by user applications as a "hook" to catch signals. |
|
4085 |
// The user-defined signal handler must pass unrecognized signals to this |
|
4086 |
// routine, and if it returns true (non-zero), then the signal handler must |
|
4087 |
// return immediately. If the flag "abort_if_unrecognized" is true, then this |
|
4088 |
// routine will never retun false (zero), but instead will execute a VM panic |
|
4089 |
// routine kill the process. |
|
4090 |
// |
|
4091 |
// If this routine returns false, it is OK to call it again. This allows |
|
4092 |
// the user-defined signal handler to perform checks either before or after |
|
4093 |
// the VM performs its own checks. Naturally, the user code would be making |
|
4094 |
// a serious error if it tried to handle an exception (such as a null check |
|
4095 |
// or breakpoint) that the VM was generating for its own correct operation. |
|
4096 |
// |
|
4097 |
// This routine may recognize any of the following kinds of signals: |
|
4098 |
// SIGBUS, SIGSEGV, SIGILL, SIGFPE, SIGQUIT, SIGPIPE, SIGXFSZ, SIGUSR1. |
|
4099 |
// It should be consulted by handlers for any of those signals. |
|
4100 |
// |
|
4101 |
// The caller of this routine must pass in the three arguments supplied |
|
4102 |
// to the function referred to in the "sa_sigaction" (not the "sa_handler") |
|
4103 |
// field of the structure passed to sigaction(). This routine assumes that |
|
4104 |
// the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. |
|
4105 |
// |
|
4106 |
// Note that the VM will print warnings if it detects conflicting signal |
|
4107 |
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". |
|
4108 |
// |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4109 |
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
|
4110 |
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
|
4111 |
void* ucontext, |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4112 |
int abort_if_unrecognized); |
1 | 4113 |
|
4114 |
void signalHandler(int sig, siginfo_t* info, void* uc) { |
|
4115 |
assert(info != NULL && uc != NULL, "it must be old kernel"); |
|
15743
f708934a12e7
6749267: Signal handler should save/restore errno
hseigel
parents:
15475
diff
changeset
|
4116 |
int orig_errno = errno; // Preserve errno value over signal handler. |
1 | 4117 |
JVM_handle_linux_signal(sig, info, uc, true); |
15743
f708934a12e7
6749267: Signal handler should save/restore errno
hseigel
parents:
15475
diff
changeset
|
4118 |
errno = orig_errno; |
1 | 4119 |
} |
4120 |
||
4121 |
||
4122 |
// This boolean allows users to forward their own non-matching signals |
|
4123 |
// to JVM_handle_linux_signal, harmlessly. |
|
4124 |
bool os::Linux::signal_handlers_are_installed = false; |
|
4125 |
||
4126 |
// For signal-chaining |
|
34145 | 4127 |
struct sigaction sigact[NSIG]; |
4128 |
uint64_t sigs = 0; |
|
4129 |
#if (64 < NSIG-1) |
|
4130 |
#error "Not all signals can be encoded in sigs. Adapt its type!" |
|
4131 |
#endif |
|
1 | 4132 |
bool os::Linux::libjsig_is_loaded = false; |
4133 |
typedef struct sigaction *(*get_signal_t)(int); |
|
4134 |
get_signal_t os::Linux::get_signal_action = NULL; |
|
4135 |
||
4136 |
struct sigaction* os::Linux::get_chained_signal_action(int sig) { |
|
4137 |
struct sigaction *actp = NULL; |
|
4138 |
||
4139 |
if (libjsig_is_loaded) { |
|
4140 |
// Retrieve the old signal handler from libjsig |
|
4141 |
actp = (*get_signal_action)(sig); |
|
4142 |
} |
|
4143 |
if (actp == NULL) { |
|
4144 |
// Retrieve the preinstalled signal handler from jvm |
|
4145 |
actp = get_preinstalled_handler(sig); |
|
4146 |
} |
|
4147 |
||
4148 |
return actp; |
|
4149 |
} |
|
4150 |
||
4151 |
static bool call_chained_handler(struct sigaction *actp, int sig, |
|
4152 |
siginfo_t *siginfo, void *context) { |
|
4153 |
// Call the old signal handler |
|
4154 |
if (actp->sa_handler == SIG_DFL) { |
|
4155 |
// It's more reasonable to let jvm treat it as an unexpected exception |
|
4156 |
// instead of taking the default action. |
|
4157 |
return false; |
|
4158 |
} else if (actp->sa_handler != SIG_IGN) { |
|
4159 |
if ((actp->sa_flags & SA_NODEFER) == 0) { |
|
4160 |
// automaticlly block the signal |
|
4161 |
sigaddset(&(actp->sa_mask), sig); |
|
4162 |
} |
|
4163 |
||
33589
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
4164 |
sa_handler_t hand = NULL; |
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
4165 |
sa_sigaction_t sa = NULL; |
1 | 4166 |
bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; |
4167 |
// retrieve the chained handler |
|
4168 |
if (siginfo_flag_set) { |
|
4169 |
sa = actp->sa_sigaction; |
|
4170 |
} else { |
|
4171 |
hand = actp->sa_handler; |
|
4172 |
} |
|
4173 |
||
4174 |
if ((actp->sa_flags & SA_RESETHAND) != 0) { |
|
4175 |
actp->sa_handler = SIG_DFL; |
|
4176 |
} |
|
4177 |
||
4178 |
// try to honor the signal mask |
|
4179 |
sigset_t oset; |
|
4180 |
pthread_sigmask(SIG_SETMASK, &(actp->sa_mask), &oset); |
|
4181 |
||
4182 |
// call into the chained handler |
|
4183 |
if (siginfo_flag_set) { |
|
4184 |
(*sa)(sig, siginfo, context); |
|
4185 |
} else { |
|
4186 |
(*hand)(sig); |
|
4187 |
} |
|
4188 |
||
4189 |
// restore the signal mask |
|
4190 |
pthread_sigmask(SIG_SETMASK, &oset, 0); |
|
4191 |
} |
|
4192 |
// Tell jvm's signal handler the signal is taken care of. |
|
4193 |
return true; |
|
4194 |
} |
|
4195 |
||
4196 |
bool os::Linux::chained_handler(int sig, siginfo_t* siginfo, void* context) { |
|
4197 |
bool chained = false; |
|
4198 |
// signal-chaining |
|
4199 |
if (UseSignalChaining) { |
|
4200 |
struct sigaction *actp = get_chained_signal_action(sig); |
|
4201 |
if (actp != NULL) { |
|
4202 |
chained = call_chained_handler(actp, sig, siginfo, context); |
|
4203 |
} |
|
4204 |
} |
|
4205 |
return chained; |
|
4206 |
} |
|
4207 |
||
4208 |
struct sigaction* os::Linux::get_preinstalled_handler(int sig) { |
|
34145 | 4209 |
if ((((uint64_t)1 << (sig-1)) & sigs) != 0) { |
1 | 4210 |
return &sigact[sig]; |
4211 |
} |
|
4212 |
return NULL; |
|
4213 |
} |
|
4214 |
||
4215 |
void os::Linux::save_preinstalled_handler(int sig, struct sigaction& oldAct) { |
|
34145 | 4216 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
1 | 4217 |
sigact[sig] = oldAct; |
34145 | 4218 |
sigs |= (uint64_t)1 << (sig-1); |
1 | 4219 |
} |
4220 |
||
4221 |
// for diagnostic |
|
34145 | 4222 |
int sigflags[NSIG]; |
1 | 4223 |
|
4224 |
int os::Linux::get_our_sigflags(int sig) { |
|
34145 | 4225 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
1 | 4226 |
return sigflags[sig]; |
4227 |
} |
|
4228 |
||
4229 |
void os::Linux::set_our_sigflags(int sig, int flags) { |
|
34145 | 4230 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
4231 |
if (sig > 0 && sig < NSIG) { |
|
33794 | 4232 |
sigflags[sig] = flags; |
4233 |
} |
|
1 | 4234 |
} |
4235 |
||
4236 |
void os::Linux::set_signal_handler(int sig, bool set_installed) { |
|
4237 |
// Check for overwrite. |
|
4238 |
struct sigaction oldAct; |
|
4239 |
sigaction(sig, (struct sigaction*)NULL, &oldAct); |
|
4240 |
||
4241 |
void* oldhand = oldAct.sa_sigaction |
|
4242 |
? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
|
4243 |
: CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
|
4244 |
if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && |
|
4245 |
oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && |
|
4246 |
oldhand != CAST_FROM_FN_PTR(void*, (sa_sigaction_t)signalHandler)) { |
|
4247 |
if (AllowUserSignalHandlers || !set_installed) { |
|
4248 |
// Do not overwrite; user takes responsibility to forward to us. |
|
4249 |
return; |
|
4250 |
} else if (UseSignalChaining) { |
|
4251 |
// save the old handler in jvm |
|
4252 |
save_preinstalled_handler(sig, oldAct); |
|
4253 |
// libjsig also interposes the sigaction() call below and saves the |
|
4254 |
// old sigaction on it own. |
|
4255 |
} else { |
|
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4256 |
fatal("Encountered unexpected pre-existing sigaction handler " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4257 |
"%#lx for signal %d.", (long)oldhand, sig); |
1 | 4258 |
} |
4259 |
} |
|
4260 |
||
4261 |
struct sigaction sigAct; |
|
4262 |
sigfillset(&(sigAct.sa_mask)); |
|
4263 |
sigAct.sa_handler = SIG_DFL; |
|
4264 |
if (!set_installed) { |
|
4265 |
sigAct.sa_flags = SA_SIGINFO|SA_RESTART; |
|
4266 |
} else { |
|
4267 |
sigAct.sa_sigaction = signalHandler; |
|
4268 |
sigAct.sa_flags = SA_SIGINFO|SA_RESTART; |
|
4269 |
} |
|
4270 |
// Save flags, which are set by ours |
|
34145 | 4271 |
assert(sig > 0 && sig < NSIG, "vm signal out of expected range"); |
1 | 4272 |
sigflags[sig] = sigAct.sa_flags; |
4273 |
||
4274 |
int ret = sigaction(sig, &sigAct, &oldAct); |
|
4275 |
assert(ret == 0, "check"); |
|
4276 |
||
4277 |
void* oldhand2 = oldAct.sa_sigaction |
|
4278 |
? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
|
4279 |
: CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
|
4280 |
assert(oldhand2 == oldhand, "no concurrent signal handler installation"); |
|
4281 |
} |
|
4282 |
||
4283 |
// install signal handlers for signals that HotSpot needs to |
|
4284 |
// handle in order to support Java-level exception handling. |
|
4285 |
||
4286 |
void os::Linux::install_signal_handlers() { |
|
4287 |
if (!signal_handlers_are_installed) { |
|
4288 |
signal_handlers_are_installed = true; |
|
4289 |
||
4290 |
// signal-chaining |
|
4291 |
typedef void (*signal_setting_t)(); |
|
4292 |
signal_setting_t begin_signal_setting = NULL; |
|
4293 |
signal_setting_t end_signal_setting = NULL; |
|
4294 |
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
|
4295 |
dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); |
1 | 4296 |
if (begin_signal_setting != NULL) { |
4297 |
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
|
4298 |
dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); |
1 | 4299 |
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
|
4300 |
dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); |
1 | 4301 |
libjsig_is_loaded = true; |
4302 |
assert(UseSignalChaining, "should enable signal-chaining"); |
|
4303 |
} |
|
4304 |
if (libjsig_is_loaded) { |
|
4305 |
// Tell libjsig jvm is setting signal handlers |
|
4306 |
(*begin_signal_setting)(); |
|
4307 |
} |
|
4308 |
||
4309 |
set_signal_handler(SIGSEGV, true); |
|
4310 |
set_signal_handler(SIGPIPE, true); |
|
4311 |
set_signal_handler(SIGBUS, true); |
|
4312 |
set_signal_handler(SIGILL, true); |
|
4313 |
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
|
4314 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4315 |
set_signal_handler(SIGTRAP, true); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4316 |
#endif |
1 | 4317 |
set_signal_handler(SIGXFSZ, true); |
4318 |
||
4319 |
if (libjsig_is_loaded) { |
|
4320 |
// Tell libjsig jvm finishes setting signal handlers |
|
4321 |
(*end_signal_setting)(); |
|
4322 |
} |
|
4323 |
||
4324 |
// 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
|
4325 |
// 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
|
4326 |
// Log that signal checking is off only if -verbose:jni is specified. |
1 | 4327 |
if (CheckJNICalls) { |
4328 |
if (libjsig_is_loaded) { |
|
10561
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4329 |
if (PrintJNIResolving) { |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4330 |
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
|
4331 |
} |
1 | 4332 |
check_signals = false; |
4333 |
} |
|
4334 |
if (AllowUserSignalHandlers) { |
|
10561
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4335 |
if (PrintJNIResolving) { |
bf51fe78a9ad
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
10522
diff
changeset
|
4336 |
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
|
4337 |
} |
1 | 4338 |
check_signals = false; |
4339 |
} |
|
4340 |
} |
|
4341 |
} |
|
4342 |
} |
|
4343 |
||
4344 |
// This is the fastest way to get thread cpu time on Linux. |
|
4345 |
// Returns cpu time (user+sys) for any thread, not only for current. |
|
4346 |
// POSIX compliant clocks are implemented in the kernels 2.6.16+. |
|
4347 |
// It might work on 2.6.10+ with a special kernel/glibc patch. |
|
4348 |
// For reference, please, see IEEE Std 1003.1-2004: |
|
4349 |
// http://www.unix.org/single_unix_specification |
|
4350 |
||
4351 |
jlong os::Linux::fast_thread_cpu_time(clockid_t clockid) { |
|
4352 |
struct timespec tp; |
|
4353 |
int rc = os::Linux::clock_gettime(clockid, &tp); |
|
4354 |
assert(rc == 0, "clock_gettime is expected to return 0 code"); |
|
4355 |
||
11251
e29da6b5622b
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
johnc
parents:
11161
diff
changeset
|
4356 |
return (tp.tv_sec * NANOSECS_PER_SEC) + tp.tv_nsec; |
1 | 4357 |
} |
4358 |
||
4359 |
///// |
|
4360 |
// glibc on Linux platform uses non-documented flag |
|
4361 |
// to indicate, that some special sort of signal |
|
4362 |
// trampoline is used. |
|
4363 |
// We will never set this flag, and we should |
|
4364 |
// ignore this flag in our diagnostic |
|
4365 |
#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
|
4366 |
#undef SIGNIFICANT_SIGNAL_MASK |
1 | 4367 |
#endif |
4368 |
#define SIGNIFICANT_SIGNAL_MASK (~0x04000000) |
|
4369 |
||
4370 |
static const char* get_signal_handler_name(address handler, |
|
4371 |
char* buf, int buflen) { |
|
33589
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
33148
diff
changeset
|
4372 |
int offset = 0; |
1 | 4373 |
bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); |
4374 |
if (found) { |
|
4375 |
// skip directory names |
|
4376 |
const char *p1, *p2; |
|
4377 |
p1 = buf; |
|
4378 |
size_t len = strlen(os::file_separator()); |
|
4379 |
while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; |
|
4380 |
jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); |
|
4381 |
} else { |
|
4382 |
jio_snprintf(buf, buflen, PTR_FORMAT, handler); |
|
4383 |
} |
|
4384 |
return buf; |
|
4385 |
} |
|
4386 |
||
4387 |
static void print_signal_handler(outputStream* st, int sig, |
|
4388 |
char* buf, size_t buflen) { |
|
4389 |
struct sigaction sa; |
|
4390 |
||
4391 |
sigaction(sig, NULL, &sa); |
|
4392 |
||
4393 |
// See comment for SIGNIFICANT_SIGNAL_MASK define |
|
4394 |
sa.sa_flags &= SIGNIFICANT_SIGNAL_MASK; |
|
4395 |
||
4396 |
st->print("%s: ", os::exception_name(sig, buf, buflen)); |
|
4397 |
||
4398 |
address handler = (sa.sa_flags & SA_SIGINFO) |
|
4399 |
? CAST_FROM_FN_PTR(address, sa.sa_sigaction) |
|
4400 |
: CAST_FROM_FN_PTR(address, sa.sa_handler); |
|
4401 |
||
4402 |
if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { |
|
4403 |
st->print("SIG_DFL"); |
|
4404 |
} else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { |
|
4405 |
st->print("SIG_IGN"); |
|
4406 |
} else { |
|
4407 |
st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); |
|
4408 |
} |
|
4409 |
||
22826 | 4410 |
st->print(", sa_mask[0]="); |
4411 |
os::Posix::print_signal_set_short(st, &sa.sa_mask); |
|
1 | 4412 |
|
4413 |
address rh = VMError::get_resetted_sighandler(sig); |
|
4414 |
// 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
|
4415 |
if (rh != NULL) { |
1 | 4416 |
handler = rh; |
4417 |
sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK; |
|
4418 |
} |
|
4419 |
||
22826 | 4420 |
st->print(", sa_flags="); |
4421 |
os::Posix::print_sa_flags(st, sa.sa_flags); |
|
1 | 4422 |
|
4423 |
// 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
|
4424 |
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
|
4425 |
handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) { |
1 | 4426 |
// It is our signal handler |
4427 |
// 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
|
4428 |
if ((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) { |
1 | 4429 |
st->print( |
4430 |
", flags was changed from " PTR32_FORMAT ", consider using jsig library", |
|
4431 |
os::Linux::get_our_sigflags(sig)); |
|
4432 |
} |
|
4433 |
} |
|
4434 |
st->cr(); |
|
4435 |
} |
|
4436 |
||
4437 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4438 |
#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
|
4439 |
do { \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4440 |
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
|
4441 |
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
|
4442 |
} \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4443 |
} while (0) |
1 | 4444 |
|
4445 |
// This method is a periodic task to check for misbehaving JNI applications |
|
4446 |
// under CheckJNI, we can add any periodic checks here |
|
4447 |
||
4448 |
void os::run_periodic_checks() { |
|
4449 |
if (check_signals == false) return; |
|
4450 |
||
4451 |
// SEGV and BUS if overridden could potentially prevent |
|
4452 |
// generation of hs*.log in the event of a crash, debugging |
|
4453 |
// such a case can be very challenging, so we absolutely |
|
4454 |
// check the following for a good measure: |
|
4455 |
DO_SIGNAL_CHECK(SIGSEGV); |
|
4456 |
DO_SIGNAL_CHECK(SIGILL); |
|
4457 |
DO_SIGNAL_CHECK(SIGFPE); |
|
4458 |
DO_SIGNAL_CHECK(SIGBUS); |
|
4459 |
DO_SIGNAL_CHECK(SIGPIPE); |
|
4460 |
DO_SIGNAL_CHECK(SIGXFSZ); |
|
22848
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4461 |
#if defined(PPC64) |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4462 |
DO_SIGNAL_CHECK(SIGTRAP); |
c1a044cf0c07
8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
goetz
parents:
22838
diff
changeset
|
4463 |
#endif |
1 | 4464 |
|
4465 |
// ReduceSignalUsage allows the user to override these handlers |
|
4466 |
// see comments at the very top and jvm_solaris.h |
|
4467 |
if (!ReduceSignalUsage) { |
|
4468 |
DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); |
|
4469 |
DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); |
|
4470 |
DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); |
|
4471 |
DO_SIGNAL_CHECK(BREAK_SIGNAL); |
|
4472 |
} |
|
4473 |
||
4474 |
DO_SIGNAL_CHECK(SR_signum); |
|
4475 |
} |
|
4476 |
||
4477 |
typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); |
|
4478 |
||
4479 |
static os_sigaction_t os_sigaction = NULL; |
|
4480 |
||
4481 |
void os::Linux::check_signal_handler(int sig) { |
|
4482 |
char buf[O_BUFLEN]; |
|
4483 |
address jvmHandler = NULL; |
|
4484 |
||
4485 |
||
4486 |
struct sigaction act; |
|
4487 |
if (os_sigaction == NULL) { |
|
4488 |
// only trust the default sigaction, in case it has been interposed |
|
4489 |
os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); |
|
4490 |
if (os_sigaction == NULL) return; |
|
4491 |
} |
|
4492 |
||
4493 |
os_sigaction(sig, (struct sigaction*)NULL, &act); |
|
4494 |
||
4495 |
||
4496 |
act.sa_flags &= SIGNIFICANT_SIGNAL_MASK; |
|
4497 |
||
4498 |
address thisHandler = (act.sa_flags & SA_SIGINFO) |
|
4499 |
? 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
|
4500 |
: 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
|
4501 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4502 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4503 |
switch (sig) { |
1 | 4504 |
case SIGSEGV: |
4505 |
case SIGBUS: |
|
4506 |
case SIGFPE: |
|
4507 |
case SIGPIPE: |
|
4508 |
case SIGILL: |
|
4509 |
case SIGXFSZ: |
|
4510 |
jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler); |
|
4511 |
break; |
|
4512 |
||
4513 |
case SHUTDOWN1_SIGNAL: |
|
4514 |
case SHUTDOWN2_SIGNAL: |
|
4515 |
case SHUTDOWN3_SIGNAL: |
|
4516 |
case BREAK_SIGNAL: |
|
4517 |
jvmHandler = (address)user_handler(); |
|
4518 |
break; |
|
4519 |
||
4520 |
default: |
|
4521 |
if (sig == SR_signum) { |
|
4522 |
jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler); |
|
4523 |
} else { |
|
4524 |
return; |
|
4525 |
} |
|
4526 |
break; |
|
4527 |
} |
|
4528 |
||
4529 |
if (thisHandler != jvmHandler) { |
|
4530 |
tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); |
|
4531 |
tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); |
|
4532 |
tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); |
|
4533 |
// No need to check this sig any longer |
|
4534 |
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
|
4535 |
// 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
|
4536 |
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
|
4537 |
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
|
4538 |
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
|
4539 |
} |
1 | 4540 |
} else if(os::Linux::get_our_sigflags(sig) != 0 && (int)act.sa_flags != os::Linux::get_our_sigflags(sig)) { |
4541 |
tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); |
|
34667 | 4542 |
tty->print("expected:"); |
4543 |
os::Posix::print_sa_flags(tty, os::Linux::get_our_sigflags(sig)); |
|
4544 |
tty->cr(); |
|
4545 |
tty->print(" found:"); |
|
4546 |
os::Posix::print_sa_flags(tty, act.sa_flags); |
|
4547 |
tty->cr(); |
|
1 | 4548 |
// No need to check this sig any longer |
4549 |
sigaddset(&check_signal_done, sig); |
|
4550 |
} |
|
4551 |
||
4552 |
// Dump all the signal |
|
4553 |
if (sigismember(&check_signal_done, sig)) { |
|
4554 |
print_signal_handlers(tty, buf, O_BUFLEN); |
|
4555 |
} |
|
4556 |
} |
|
4557 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4558 |
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
|
4559 |
char* format, ...); |
1 | 4560 |
|
4561 |
// this is called _before_ the most of global arguments have been parsed |
|
4562 |
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
|
4563 |
char dummy; // used to get a guess on initial stack address |
1 | 4564 |
// first_hrtime = gethrtime(); |
4565 |
||
4566 |
clock_tics_per_sec = sysconf(_SC_CLK_TCK); |
|
4567 |
||
4568 |
init_random(1234567); |
|
4569 |
||
4570 |
ThreadCritical::initialize(); |
|
4571 |
||
4572 |
Linux::set_page_size(sysconf(_SC_PAGESIZE)); |
|
4573 |
if (Linux::page_size() == -1) { |
|
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4574 |
fatal("os_linux.cpp: os::init: sysconf failed (%s)", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4575 |
strerror(errno)); |
1 | 4576 |
} |
4577 |
init_page_sizes((size_t) Linux::page_size()); |
|
4578 |
||
4579 |
Linux::initialize_system_info(); |
|
4580 |
||
4581 |
// main_thread points to the aboriginal thread |
|
4582 |
Linux::_main_thread = pthread_self(); |
|
4583 |
||
4584 |
Linux::clock_init(); |
|
21185
9d53434b1ef5
8027294: Prepare hotspot for non TOD based uptime counter
jbachorik
parents:
20408
diff
changeset
|
4585 |
initial_time_count = javaTimeNanos(); |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4586 |
|
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4587 |
// pthread_condattr initialization for monotonic clock |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4588 |
int status; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4589 |
pthread_condattr_t* _condattr = os::Linux::condAttr(); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4590 |
if ((status = pthread_condattr_init(_condattr)) != 0) { |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4591 |
fatal("pthread_condattr_init: %s", strerror(status)); |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4592 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4593 |
// Only set the clock if CLOCK_MONOTONIC is available |
22891
1f5d1fff23fa
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
fparain
parents:
22749
diff
changeset
|
4594 |
if (os::supports_monotonic_clock()) { |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4595 |
if ((status = pthread_condattr_setclock(_condattr, CLOCK_MONOTONIC)) != 0) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4596 |
if (status == EINVAL) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4597 |
warning("Unable to use monotonic clock with relative timed-waits" \ |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4598 |
" - changes to the time-of-day clock may have adverse affects"); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4599 |
} else { |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32742
diff
changeset
|
4600 |
fatal("pthread_condattr_setclock: %s", strerror(status)); |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4601 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4602 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4603 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4604 |
// else it defaults to CLOCK_REALTIME |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
4605 |
|
27164 | 4606 |
// retrieve entry point for pthread_setname_np |
4607 |
Linux::_pthread_setname_np = |
|
4608 |
(int(*)(pthread_t, const char*))dlsym(RTLD_DEFAULT, "pthread_setname_np"); |
|
4609 |
||
1 | 4610 |
} |
4611 |
||
4612 |
// To install functions for atexit system call |
|
4613 |
extern "C" { |
|
4614 |
static void perfMemory_exit_helper() { |
|
4615 |
perfMemory_exit(); |
|
4616 |
} |
|
4617 |
} |
|
4618 |
||
4619 |
// 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
|
4620 |
jint os::init_2(void) { |
1 | 4621 |
Linux::fast_thread_clock_init(); |
4622 |
||
4623 |
// Allocate a single page and mark it as readable for safepoint polling |
|
4624 |
address polling_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4625 |
guarantee(polling_page != MAP_FAILED, "os::init_2: failed to allocate polling page"); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4626 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4627 |
os::set_polling_page(polling_page); |
1 | 4628 |
|
4629 |
#ifndef PRODUCT |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4630 |
if (Verbose && PrintMiscellaneous) { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4631 |
tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4632 |
(intptr_t)polling_page); |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4633 |
} |
1 | 4634 |
#endif |
4635 |
||
4636 |
if (!UseMembar) { |
|
4637 |
address mem_serialize_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4638 |
guarantee(mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page"); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
4639 |
os::set_memory_serialize_page(mem_serialize_page); |
1 | 4640 |
|
4641 |
#ifndef PRODUCT |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4642 |
if (Verbose && PrintMiscellaneous) { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4643 |
tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4644 |
(intptr_t)mem_serialize_page); |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4645 |
} |
1 | 4646 |
#endif |
4647 |
} |
|
4648 |
||
4649 |
// initialize suspend/resume support - must do this before signal_sets_init() |
|
4650 |
if (SR_initialize() != 0) { |
|
4651 |
perror("SR_initialize failed"); |
|
4652 |
return JNI_ERR; |
|
4653 |
} |
|
4654 |
||
4655 |
Linux::signal_sets_init(); |
|
4656 |
Linux::install_signal_handlers(); |
|
4657 |
||
6964
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4658 |
// Check minimum allowable stack size for thread creation and to initialize |
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4659 |
// the java system classes, including StackOverflowError - depends on page |
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4660 |
// size. Add a page for compiler2 recursion in main thread. |
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4661 |
// Add in 2*BytesPerWord times page size to account for VM stack during |
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4662 |
// class initialization depending on 32 or 64 bit VM. |
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4663 |
os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed, |
35201
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
4664 |
JavaThread::stack_guard_zone_size() + |
996db89f378e
8139864: Improve handling of stack protection zones.
goetz
parents:
35176
diff
changeset
|
4665 |
JavaThread::stack_shadow_zone_size() + |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4666 |
(2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size()); |
6964
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4667 |
|
1 | 4668 |
size_t threadStackSizeInBytes = ThreadStackSize * K; |
4669 |
if (threadStackSizeInBytes != 0 && |
|
6964
6e45ffa3bccf
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
6962
diff
changeset
|
4670 |
threadStackSizeInBytes < os::Linux::min_stack_allowed) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4671 |
tty->print_cr("\nThe stack size specified is too small, " |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
4672 |
"Specify at least " SIZE_FORMAT "k", |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4673 |
os::Linux::min_stack_allowed/ K); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4674 |
return JNI_ERR; |
1 | 4675 |
} |
4676 |
||
4677 |
// Make the stack size a multiple of the page size so that |
|
4678 |
// the yellow/red zones can be guarded. |
|
4679 |
JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4680 |
vm_page_size())); |
1 | 4681 |
|
4682 |
Linux::capture_initial_stack(JavaThread::stack_size_at_create()); |
|
4683 |
||
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
|
4684 |
#if defined(IA32) |
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
|
4685 |
workaround_expand_exec_shield_cs_limit(); |
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
|
4686 |
#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
|
4687 |
|
1 | 4688 |
Linux::libpthread_init(); |
4689 |
if (PrintMiscellaneous && (Verbose || WizardMode)) { |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
4690 |
tty->print_cr("[HotSpot is running with %s, %s]\n", |
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
4691 |
Linux::glibc_version(), Linux::libpthread_version()); |
1 | 4692 |
} |
4693 |
||
388 | 4694 |
if (UseNUMA) { |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4695 |
if (!Linux::libnuma_init()) { |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4696 |
UseNUMA = false; |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4697 |
} else { |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4698 |
if ((Linux::numa_max_node() < 1)) { |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4699 |
// There's only one node(they start from 0), disable NUMA. |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4700 |
UseNUMA = false; |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4701 |
} |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4702 |
} |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4703 |
// With SHM and HugeTLBFS large pages we cannot uncommit a page, so there's no way |
9341
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4704 |
// we can make the adaptive lgrp chunk resizing work. If the user specified |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4705 |
// both UseNUMA and UseLargePages (or UseSHM/UseHugeTLBFS) on the command line - warn and |
9341
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4706 |
// disable adaptive resizing. |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4707 |
if (UseNUMA && UseLargePages && !can_commit_large_page_memory()) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4708 |
if (FLAG_IS_DEFAULT(UseNUMA)) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4709 |
UseNUMA = false; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4710 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4711 |
if (FLAG_IS_DEFAULT(UseLargePages) && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4712 |
FLAG_IS_DEFAULT(UseSHM) && |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
4713 |
FLAG_IS_DEFAULT(UseHugeTLBFS)) { |
9341
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4714 |
UseLargePages = false; |
30609
211c22831646
8079263: Suppress warning about disabling adaptive size policy when enabling UseLargePages with UseNUMA when adaptive size policy is disabled
redestad
parents:
30252
diff
changeset
|
4715 |
} else if (UseAdaptiveSizePolicy || UseAdaptiveNUMAChunkSizing) { |
211c22831646
8079263: Suppress warning about disabling adaptive size policy when enabling UseLargePages with UseNUMA when adaptive size policy is disabled
redestad
parents:
30252
diff
changeset
|
4716 |
warning("UseNUMA is not fully compatible with SHM/HugeTLBFS large pages, disabling adaptive resizing (-XX:-UseAdaptiveSizePolicy -XX:-UseAdaptiveNUMAChunkSizing)"); |
9341
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4717 |
UseAdaptiveSizePolicy = false; |
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4718 |
UseAdaptiveNUMAChunkSizing = false; |
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4719 |
} |
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4720 |
} |
347fa5cdbd39
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
9339
diff
changeset
|
4721 |
} |
1615
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4722 |
if (!UseNUMA && ForceNUMA) { |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4723 |
UseNUMA = true; |
b46d9f19bde2
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
1388
diff
changeset
|
4724 |
} |
388 | 4725 |
} |
4726 |
||
1 | 4727 |
if (MaxFDLimit) { |
4728 |
// set the number of file descriptors to max. print out error |
|
4729 |
// if getrlimit/setrlimit fails but continue regardless. |
|
4730 |
struct rlimit nbr_files; |
|
4731 |
int status = getrlimit(RLIMIT_NOFILE, &nbr_files); |
|
4732 |
if (status != 0) { |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4733 |
if (PrintMiscellaneous && (Verbose || WizardMode)) { |
1 | 4734 |
perror("os::init_2 getrlimit failed"); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4735 |
} |
1 | 4736 |
} else { |
4737 |
nbr_files.rlim_cur = nbr_files.rlim_max; |
|
4738 |
status = setrlimit(RLIMIT_NOFILE, &nbr_files); |
|
4739 |
if (status != 0) { |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4740 |
if (PrintMiscellaneous && (Verbose || WizardMode)) { |
1 | 4741 |
perror("os::init_2 setrlimit failed"); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4742 |
} |
1 | 4743 |
} |
4744 |
} |
|
4745 |
} |
|
4746 |
||
4747 |
// Initialize lock used to serialize thread creation (see os::create_thread) |
|
4748 |
Linux::set_createThread_lock(new Mutex(Mutex::leaf, "createThread_lock", false)); |
|
4749 |
||
4750 |
// at-exit methods are called in the reverse order of their registration. |
|
4751 |
// atexit functions are called on return from main or as a result of a |
|
4752 |
// call to exit(3C). There can be only 32 of these functions registered |
|
4753 |
// and atexit() does not set errno. |
|
4754 |
||
4755 |
if (PerfAllowAtExitRegistration) { |
|
4756 |
// only register atexit functions if PerfAllowAtExitRegistration is set. |
|
4757 |
// atexit functions can be delayed until process exit time, which |
|
4758 |
// can be problematic for embedded VM situations. Embedded VMs should |
|
4759 |
// call DestroyJavaVM() to assure that VM resources are released. |
|
4760 |
||
4761 |
// note: perfMemory_exit_helper atexit function may be removed in |
|
4762 |
// the future if the appropriate cleanup code can be added to the |
|
4763 |
// VM_Exit VMOperation's doit method. |
|
4764 |
if (atexit(perfMemory_exit_helper) != 0) { |
|
22807 | 4765 |
warning("os::init_2 atexit(perfMemory_exit_helper) failed"); |
1 | 4766 |
} |
4767 |
} |
|
4768 |
||
4769 |
// initialize thread priority policy |
|
4770 |
prio_init(); |
|
4771 |
||
4772 |
return JNI_OK; |
|
4773 |
} |
|
4774 |
||
4775 |
// Mark the polling page as unreadable |
|
4776 |
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
|
4777 |
if (!guard_memory((char*)_polling_page, Linux::page_size())) { |
1 | 4778 |
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
|
4779 |
} |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4780 |
} |
1 | 4781 |
|
4782 |
// Mark the polling page as readable |
|
4783 |
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
|
4784 |
if (!linux_mprotect((char *)_polling_page, Linux::page_size(), PROT_READ)) { |
1 | 4785 |
fatal("Could not enable polling page"); |
823
9a5271881bc0
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
781
diff
changeset
|
4786 |
} |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
4787 |
} |
1 | 4788 |
|
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4789 |
// 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
|
4790 |
// 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
|
4791 |
#ifndef CPU_COUNT |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4792 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4793 |
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
|
4794 |
int count = 0; |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4795 |
// 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
|
4796 |
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
|
4797 |
if (CPU_ISSET(i, cpus)) { |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4798 |
count++; |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4799 |
} |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4800 |
} |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4801 |
return count; |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4802 |
} |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4803 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4804 |
#define CPU_COUNT(cpus) _cpu_count(cpus) |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4805 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4806 |
#endif // CPU_COUNT |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4807 |
|
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4808 |
// Get the current number of available processors for this process. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4809 |
// 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
|
4810 |
// sched_getaffinity gives an accurate answer as it accounts for cpusets. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4811 |
// 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
|
4812 |
// dynamic check - see 6515172 for details. |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4813 |
// 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
|
4814 |
// processors - which can be greater than the number available to the process. |
1 | 4815 |
int os::active_processor_count() { |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4816 |
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
|
4817 |
cpu_set_t* cpus_p = &cpus; |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4818 |
int cpus_size = sizeof(cpu_set_t); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4819 |
|
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4820 |
int configured_cpus = processor_count(); // upper bound on available cpus |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4821 |
int cpu_count = 0; |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4822 |
|
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4823 |
// 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
|
4824 |
#ifdef CPU_ALLOC |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4825 |
|
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4826 |
// 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
|
4827 |
// introduce a diagnostic flag: UseCpuAllocPath |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4828 |
if (configured_cpus >= CPU_SETSIZE || UseCpuAllocPath) { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4829 |
// kernel may use a mask bigger than cpu_set_t |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4830 |
log_trace(os)("active_processor_count: using dynamic path %s" |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4831 |
"- configured processors: %d", |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4832 |
UseCpuAllocPath ? "(forced) " : "", |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4833 |
configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4834 |
cpus_p = CPU_ALLOC(configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4835 |
if (cpus_p != NULL) { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4836 |
cpus_size = CPU_ALLOC_SIZE(configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4837 |
// zero it just to be safe |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4838 |
CPU_ZERO_S(cpus_size, cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4839 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4840 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4841 |
// failed to allocate so fallback to online cpus |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4842 |
int online_cpus = ::sysconf(_SC_NPROCESSORS_ONLN); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4843 |
log_trace(os)("active_processor_count: " |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4844 |
"CPU_ALLOC failed (%s) - using " |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4845 |
"online processor count: %d", |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4846 |
strerror(errno), online_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4847 |
return online_cpus; |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4848 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4849 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4850 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4851 |
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
|
4852 |
configured_cpus); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4853 |
} |
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4854 |
#else // CPU_ALLOC |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4855 |
// these stubs won't be executed |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4856 |
#define CPU_COUNT_S(size, cpus) -1 |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4857 |
#define CPU_FREE(cpus) |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4858 |
|
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4859 |
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
|
4860 |
configured_cpus); |
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4861 |
#endif // CPU_ALLOC |
35884
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4862 |
|
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4863 |
// 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
|
4864 |
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
|
4865 |
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
|
4866 |
cpu_count = CPU_COUNT_S(cpus_size, cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4867 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4868 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4869 |
cpu_count = CPU_COUNT(cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4870 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4871 |
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
|
4872 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4873 |
else { |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4874 |
cpu_count = ::sysconf(_SC_NPROCESSORS_ONLN); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4875 |
warning("sched_getaffinity failed (%s)- using online processor count (%d) " |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4876 |
"which may exceed available processors", strerror(errno), cpu_count); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4877 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4878 |
|
36089
0df0a643796e
8148987: [Linux] Allow building on older systems without CPU_ALLOC support
dholmes
parents:
36087
diff
changeset
|
4879 |
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
|
4880 |
CPU_FREE(cpus_p); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4881 |
} |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4882 |
|
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4883 |
assert(cpu_count > 0 && cpu_count <= processor_count(), "sanity check"); |
ec439aaca107
6515172: Runtime.availableProcessors() ignores Linux taskset command
dholmes
parents:
35201
diff
changeset
|
4884 |
return cpu_count; |
1 | 4885 |
} |
4886 |
||
10739 | 4887 |
void os::set_native_thread_name(const char *name) { |
27164 | 4888 |
if (Linux::_pthread_setname_np) { |
4889 |
char buf [16]; // according to glibc manpage, 16 chars incl. '/0' |
|
4890 |
snprintf(buf, sizeof(buf), "%s", name); |
|
4891 |
buf[sizeof(buf) - 1] = '\0'; |
|
4892 |
const int rc = Linux::_pthread_setname_np(pthread_self(), buf); |
|
4893 |
// ERANGE should not happen; all other errors should just be ignored. |
|
4894 |
assert(rc != ERANGE, "pthread_setname_np failed"); |
|
4895 |
} |
|
10739 | 4896 |
} |
4897 |
||
1 | 4898 |
bool os::distribute_processes(uint length, uint* distribution) { |
4899 |
// Not yet implemented. |
|
4900 |
return false; |
|
4901 |
} |
|
4902 |
||
4903 |
bool os::bind_to_processor(uint processor_id) { |
|
4904 |
// Not yet implemented. |
|
4905 |
return false; |
|
4906 |
} |
|
4907 |
||
4908 |
/// |
|
4909 |
||
18025 | 4910 |
void os::SuspendedThreadTask::internal_do_task() { |
4911 |
if (do_suspend(_thread->osthread())) { |
|
4912 |
SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); |
|
4913 |
do_task(context); |
|
4914 |
do_resume(_thread->osthread()); |
|
4915 |
} |
|
4916 |
} |
|
4917 |
||
4918 |
class PcFetcher : public os::SuspendedThreadTask { |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4919 |
public: |
18025 | 4920 |
PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {} |
4921 |
ExtendedPC result(); |
|
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4922 |
protected: |
18025 | 4923 |
void do_task(const os::SuspendedThreadTaskContext& context); |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
4924 |
private: |
18025 | 4925 |
ExtendedPC _epc; |
4926 |
}; |
|
4927 |
||
4928 |
ExtendedPC PcFetcher::result() { |
|
4929 |
guarantee(is_done(), "task is not done yet."); |
|
4930 |
return _epc; |
|
4931 |
} |
|
4932 |
||
4933 |
void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { |
|
4934 |
Thread* thread = context.thread(); |
|
4935 |
OSThread* osthread = thread->osthread(); |
|
4936 |
if (osthread->ucontext() != NULL) { |
|
35077
8b86440d3bf1
8145114: const-correctness for ucontext_t* reading functions
stuefe
parents:
35075
diff
changeset
|
4937 |
_epc = os::Linux::ucontext_get_pc((const ucontext_t *) context.ucontext()); |
18025 | 4938 |
} else { |
4939 |
// NULL context is unexpected, double-check this is the VMThread |
|
4940 |
guarantee(thread->is_VM_thread(), "can only be called for VMThread"); |
|
4941 |
} |
|
4942 |
} |
|
4943 |
||
1 | 4944 |
// Suspends the target using the signal mechanism and then grabs the PC before |
4945 |
// resuming the target. Used by the flat-profiler only |
|
4946 |
ExtendedPC os::get_thread_pc(Thread* thread) { |
|
4947 |
// Make sure that it is called by the watcher for the VMThread |
|
4948 |
assert(Thread::current()->is_Watcher_thread(), "Must be watcher"); |
|
4949 |
assert(thread->is_VM_thread(), "Can only be called for VMThread"); |
|
4950 |
||
18025 | 4951 |
PcFetcher fetcher(thread); |
4952 |
fetcher.run(); |
|
4953 |
return fetcher.result(); |
|
1 | 4954 |
} |
4955 |
||
4956 |
//////////////////////////////////////////////////////////////////////////////// |
|
4957 |
// debug support |
|
4958 |
||
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
4959 |
bool os::find(address addr, outputStream* st) { |
1 | 4960 |
Dl_info dlinfo; |
4961 |
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
|
4962 |
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
|
4963 |
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
|
4964 |
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
|
4965 |
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
|
4966 |
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
|
4967 |
} 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
|
4968 |
st->print("<offset " PTR_FORMAT ">", p2i(addr) - p2i(dlinfo.dli_fbase)); |
1 | 4969 |
} else { |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
4970 |
st->print("<absolute address>"); |
1 | 4971 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
4972 |
if (dlinfo.dli_fname != NULL) { |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
4973 |
st->print(" in %s", dlinfo.dli_fname); |
1 | 4974 |
} |
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
4975 |
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
|
4976 |
st->print(" at " PTR_FORMAT, p2i(dlinfo.dli_fbase)); |
1 | 4977 |
} |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
4978 |
st->cr(); |
1 | 4979 |
|
4980 |
if (Verbose) { |
|
4981 |
// decode some bytes around the PC |
|
16670
4af09aff4237
8003310: Enable -Wunused-function when compiling with gcc
mikael
parents:
16669
diff
changeset
|
4982 |
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
|
4983 |
address end = clamp_address_in_page(addr+40, addr, os::vm_page_size()); |
1 | 4984 |
address lowest = (address) dlinfo.dli_sname; |
4985 |
if (!lowest) lowest = (address) dlinfo.dli_fbase; |
|
4986 |
if (begin < lowest) begin = lowest; |
|
4987 |
Dl_info dlinfo2; |
|
18683
a6418e038255
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
18086
diff
changeset
|
4988 |
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
|
4989 |
&& end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) { |
1 | 4990 |
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
|
4991 |
} |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
4992 |
Disassembler::decode(begin, end, st); |
1 | 4993 |
} |
4994 |
return true; |
|
4995 |
} |
|
4996 |
return false; |
|
4997 |
} |
|
4998 |
||
4999 |
//////////////////////////////////////////////////////////////////////////////// |
|
5000 |
// misc |
|
5001 |
||
5002 |
// This does not do anything on Linux. This is basically a hook for being |
|
5003 |
// able to use structured exception handling (thread-local exception filters) |
|
5004 |
// on, e.g., Win32. |
|
5005 |
void |
|
33593
60764a78fa5c
8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents:
33148
diff
changeset
|
5006 |
os::os_exception_wrapper(java_call_t f, JavaValue* value, const methodHandle& method, |
1 | 5007 |
JavaCallArguments* args, Thread* thread) { |
5008 |
f(value, method, args, thread); |
|
5009 |
} |
|
5010 |
||
5011 |
void os::print_statistics() { |
|
5012 |
} |
|
5013 |
||
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5014 |
bool os::message_box(const char* title, const char* message) { |
1 | 5015 |
int i; |
5016 |
fdStream err(defaultStream::error_fd()); |
|
5017 |
for (i = 0; i < 78; i++) err.print_raw("="); |
|
5018 |
err.cr(); |
|
5019 |
err.print_raw_cr(title); |
|
5020 |
for (i = 0; i < 78; i++) err.print_raw("-"); |
|
5021 |
err.cr(); |
|
5022 |
err.print_raw_cr(message); |
|
5023 |
for (i = 0; i < 78; i++) err.print_raw("="); |
|
5024 |
err.cr(); |
|
5025 |
||
5026 |
char buf[16]; |
|
5027 |
// Prevent process from exiting upon "read error" without consuming all CPU |
|
5028 |
while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } |
|
5029 |
||
5030 |
return buf[0] == 'y' || buf[0] == 'Y'; |
|
5031 |
} |
|
5032 |
||
5033 |
int os::stat(const char *path, struct stat *sbuf) { |
|
5034 |
char pathbuf[MAX_PATH]; |
|
5035 |
if (strlen(path) > MAX_PATH - 1) { |
|
5036 |
errno = ENAMETOOLONG; |
|
5037 |
return -1; |
|
5038 |
} |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5039 |
os::native_path(strcpy(pathbuf, path)); |
1 | 5040 |
return ::stat(pathbuf, sbuf); |
5041 |
} |
|
5042 |
||
5043 |
bool os::check_heap(bool force) { |
|
5044 |
return true; |
|
5045 |
} |
|
5046 |
||
5047 |
// Is a (classpath) directory empty? |
|
5048 |
bool os::dir_is_empty(const char* path) { |
|
5049 |
DIR *dir = NULL; |
|
5050 |
struct dirent *ptr; |
|
5051 |
||
5052 |
dir = opendir(path); |
|
5053 |
if (dir == NULL) return true; |
|
5054 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5055 |
// Scan the directory |
1 | 5056 |
bool result = true; |
5057 |
char buf[sizeof(struct dirent) + MAX_PATH]; |
|
5058 |
while (result && (ptr = ::readdir(dir)) != NULL) { |
|
5059 |
if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { |
|
5060 |
result = false; |
|
5061 |
} |
|
5062 |
} |
|
5063 |
closedir(dir); |
|
5064 |
return result; |
|
5065 |
} |
|
5066 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5067 |
// 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
|
5068 |
// from src/solaris/hpi/src/system_md.c |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5069 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5070 |
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
|
5071 |
if (strlen(path) > MAX_PATH - 1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5072 |
errno = ENAMETOOLONG; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5073 |
return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5074 |
} |
27457
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5075 |
|
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5076 |
// 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
|
5077 |
// 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
|
5078 |
// 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
|
5079 |
// 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
|
5080 |
// (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
|
5081 |
// turn might: |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5082 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5083 |
// - 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
|
5084 |
// descriptors, resulting in mysterious hangs, or |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5085 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5086 |
// - 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
|
5087 |
// suffering from bug 1085341. |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5088 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5089 |
// (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
|
5090 |
// design flaw) |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5091 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5092 |
// See: |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5093 |
// 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
|
5094 |
// 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
|
5095 |
// 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
|
5096 |
// |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5097 |
// 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
|
5098 |
// 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
|
5099 |
// 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
|
5100 |
// 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
|
5101 |
// 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
|
5102 |
#ifdef O_CLOEXEC |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5103 |
oflag |= O_CLOEXEC; |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5104 |
#endif |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5105 |
|
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5106 |
int fd = ::open64(path, oflag, mode); |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5107 |
if (fd == -1) return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5108 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5109 |
//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
|
5110 |
{ |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5111 |
struct stat64 buf64; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5112 |
int ret = ::fstat64(fd, &buf64); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5113 |
int st_mode = buf64.st_mode; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5114 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5115 |
if (ret != -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5116 |
if ((st_mode & S_IFMT) == S_IFDIR) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5117 |
errno = EISDIR; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5118 |
::close(fd); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5119 |
return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5120 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5121 |
} else { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5122 |
::close(fd); |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5123 |
return -1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5124 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5125 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5126 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5127 |
#ifdef FD_CLOEXEC |
27457
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5128 |
// 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
|
5129 |
// 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
|
5130 |
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
|
5131 |
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
|
5132 |
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
|
5133 |
if (flags != -1) { |
27457
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5134 |
if ((flags & FD_CLOEXEC) != 0) |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5135 |
O_CLOEXEC_is_known_to_work = 1; |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5136 |
else |
adbe834be3a0
8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
martin
parents:
27400
diff
changeset
|
5137 |
::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
|
5138 |
} |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5139 |
} |
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5140 |
#endif |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5141 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5142 |
return fd; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5143 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5144 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5145 |
|
1 | 5146 |
// create binary file, rewriting existing file if required |
5147 |
int os::create_binary_file(const char* path, bool rewrite_existing) { |
|
5148 |
int oflags = O_WRONLY | O_CREAT; |
|
5149 |
if (!rewrite_existing) { |
|
5150 |
oflags |= O_EXCL; |
|
5151 |
} |
|
5152 |
return ::open64(path, oflags, S_IREAD | S_IWRITE); |
|
5153 |
} |
|
5154 |
||
5155 |
// return current position of file pointer |
|
5156 |
jlong os::current_file_offset(int fd) { |
|
5157 |
return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); |
|
5158 |
} |
|
5159 |
||
5160 |
// move file pointer to the specified offset |
|
5161 |
jlong os::seek_to_file_offset(int fd, jlong offset) { |
|
5162 |
return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); |
|
5163 |
} |
|
5164 |
||
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5165 |
// This code originates from JDK's sysAvailable |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5166 |
// 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
|
5167 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5168 |
int os::available(int fd, jlong *bytes) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5169 |
jlong cur, end; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5170 |
int mode; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5171 |
struct stat64 buf64; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5172 |
|
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5173 |
if (::fstat64(fd, &buf64) >= 0) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5174 |
mode = buf64.st_mode; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5175 |
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
|
5176 |
int n; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5177 |
if (::ioctl(fd, FIONREAD, &n) >= 0) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5178 |
*bytes = n; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5179 |
return 1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5180 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5181 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5182 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5183 |
if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5184 |
return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5185 |
} 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
|
5186 |
return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5187 |
} else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5188 |
return 0; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5189 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5190 |
*bytes = end - cur; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5191 |
return 1; |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5192 |
} |
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5193 |
|
1 | 5194 |
// Map a block of memory. |
13195 | 5195 |
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
|
5196 |
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
|
5197 |
bool allow_exec) { |
1 | 5198 |
int prot; |
11967 | 5199 |
int flags = MAP_PRIVATE; |
1 | 5200 |
|
5201 |
if (read_only) { |
|
5202 |
prot = PROT_READ; |
|
5203 |
} else { |
|
5204 |
prot = PROT_READ | PROT_WRITE; |
|
5205 |
} |
|
5206 |
||
5207 |
if (allow_exec) { |
|
5208 |
prot |= PROT_EXEC; |
|
5209 |
} |
|
5210 |
||
5211 |
if (addr != NULL) { |
|
5212 |
flags |= MAP_FIXED; |
|
5213 |
} |
|
5214 |
||
5215 |
char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, |
|
5216 |
fd, file_offset); |
|
5217 |
if (mapped_address == MAP_FAILED) { |
|
5218 |
return NULL; |
|
5219 |
} |
|
5220 |
return mapped_address; |
|
5221 |
} |
|
5222 |
||
5223 |
||
5224 |
// Remap a block of memory. |
|
13195 | 5225 |
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
|
5226 |
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
|
5227 |
bool allow_exec) { |
1 | 5228 |
// same as map_memory() on this OS |
5229 |
return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, |
|
5230 |
allow_exec); |
|
5231 |
} |
|
5232 |
||
5233 |
||
5234 |
// Unmap a block of memory. |
|
13195 | 5235 |
bool os::pd_unmap_memory(char* addr, size_t bytes) { |
1 | 5236 |
return munmap(addr, bytes) == 0; |
5237 |
} |
|
5238 |
||
5239 |
static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time); |
|
5240 |
||
5241 |
static clockid_t thread_cpu_clockid(Thread* thread) { |
|
5242 |
pthread_t tid = thread->osthread()->pthread_id(); |
|
5243 |
clockid_t clockid; |
|
5244 |
||
5245 |
// Get thread clockid |
|
5246 |
int rc = os::Linux::pthread_getcpuclockid(tid, &clockid); |
|
5247 |
assert(rc == 0, "pthread_getcpuclockid is expected to return 0 code"); |
|
5248 |
return clockid; |
|
5249 |
} |
|
5250 |
||
5251 |
// current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) |
|
5252 |
// are used by JVM M&M and JVMTI to get user+sys or user CPU time |
|
5253 |
// of a thread. |
|
5254 |
// |
|
5255 |
// current_thread_cpu_time() and thread_cpu_time(Thread*) returns |
|
5256 |
// the fast estimate available on the platform. |
|
5257 |
||
5258 |
jlong os::current_thread_cpu_time() { |
|
5259 |
if (os::Linux::supports_fast_thread_cpu_time()) { |
|
5260 |
return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID); |
|
5261 |
} else { |
|
5262 |
// return user + sys since the cost is the same |
|
5263 |
return slow_thread_cpu_time(Thread::current(), true /* user + sys */); |
|
5264 |
} |
|
5265 |
} |
|
5266 |
||
5267 |
jlong os::thread_cpu_time(Thread* thread) { |
|
5268 |
// consistent with what current_thread_cpu_time() returns |
|
5269 |
if (os::Linux::supports_fast_thread_cpu_time()) { |
|
5270 |
return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread)); |
|
5271 |
} else { |
|
5272 |
return slow_thread_cpu_time(thread, true /* user + sys */); |
|
5273 |
} |
|
5274 |
} |
|
5275 |
||
5276 |
jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { |
|
5277 |
if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) { |
|
5278 |
return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID); |
|
5279 |
} else { |
|
5280 |
return slow_thread_cpu_time(Thread::current(), user_sys_cpu_time); |
|
5281 |
} |
|
5282 |
} |
|
5283 |
||
5284 |
jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { |
|
5285 |
if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) { |
|
5286 |
return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread)); |
|
5287 |
} else { |
|
5288 |
return slow_thread_cpu_time(thread, user_sys_cpu_time); |
|
5289 |
} |
|
5290 |
} |
|
5291 |
||
5292 |
// -1 on error. |
|
5293 |
static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { |
|
5294 |
pid_t tid = thread->osthread()->thread_id(); |
|
5295 |
char *s; |
|
5296 |
char stat[2048]; |
|
5297 |
int statlen; |
|
5298 |
char proc_name[64]; |
|
5299 |
int count; |
|
5300 |
long sys_time, user_time; |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5301 |
char cdummy; |
1 | 5302 |
int idummy; |
5303 |
long ldummy; |
|
5304 |
FILE *fp; |
|
5305 |
||
24333
c7214442139d
8031126: java/lang/management/ThreadMXBean/ThreadUserTime.java fails intermittently
sla
parents:
23868
diff
changeset
|
5306 |
snprintf(proc_name, 64, "/proc/self/task/%d/stat", tid); |
1 | 5307 |
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
|
5308 |
if (fp == NULL) return -1; |
1 | 5309 |
statlen = fread(stat, 1, 2047, fp); |
5310 |
stat[statlen] = '\0'; |
|
5311 |
fclose(fp); |
|
5312 |
||
5313 |
// Skip pid and the command string. Note that we could be dealing with |
|
5314 |
// weird command names, e.g. user could decide to rename java launcher |
|
5315 |
// to "java 1.4.2 :)", then the stat file would look like |
|
5316 |
// 1234 (java 1.4.2 :)) R ... ... |
|
5317 |
// We don't really need to know the command string, just find the last |
|
5318 |
// occurrence of ")" and then start parsing from there. See bug 4726580. |
|
5319 |
s = strrchr(stat, ')'); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5320 |
if (s == NULL) return -1; |
1 | 5321 |
|
5322 |
// Skip blank chars |
|
27471 | 5323 |
do { s++; } while (s && isspace(*s)); |
1 | 5324 |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5325 |
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
|
5326 |
&cdummy, &idummy, &idummy, &idummy, &idummy, &idummy, |
1 | 5327 |
&ldummy, &ldummy, &ldummy, &ldummy, &ldummy, |
5328 |
&user_time, &sys_time); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5329 |
if (count != 13) return -1; |
1 | 5330 |
if (user_sys_cpu_time) { |
5331 |
return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec); |
|
5332 |
} else { |
|
5333 |
return (jlong)user_time * (1000000000 / clock_tics_per_sec); |
|
5334 |
} |
|
5335 |
} |
|
5336 |
||
5337 |
void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
|
5338 |
info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits |
|
5339 |
info_ptr->may_skip_backward = false; // elapsed time not wall time |
|
5340 |
info_ptr->may_skip_forward = false; // elapsed time not wall time |
|
5341 |
info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned |
|
5342 |
} |
|
5343 |
||
5344 |
void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
|
5345 |
info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits |
|
5346 |
info_ptr->may_skip_backward = false; // elapsed time not wall time |
|
5347 |
info_ptr->may_skip_forward = false; // elapsed time not wall time |
|
5348 |
info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned |
|
5349 |
} |
|
5350 |
||
5351 |
bool os::is_thread_cpu_time_supported() { |
|
5352 |
return true; |
|
5353 |
} |
|
5354 |
||
5355 |
// System loadavg support. Returns -1 if load average cannot be obtained. |
|
5356 |
// Linux doesn't yet have a (official) notion of processor sets, |
|
5357 |
// so just return the system wide load average. |
|
5358 |
int os::loadavg(double loadavg[], int nelem) { |
|
5359 |
return ::getloadavg(loadavg, nelem); |
|
5360 |
} |
|
5361 |
||
5362 |
void os::pause() { |
|
5363 |
char filename[MAX_PATH]; |
|
5364 |
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
|
5365 |
jio_snprintf(filename, MAX_PATH, "%s", PauseAtStartupFile); |
1 | 5366 |
} else { |
5367 |
jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); |
|
5368 |
} |
|
5369 |
||
5370 |
int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); |
|
5371 |
if (fd != -1) { |
|
5372 |
struct stat buf; |
|
7405
e6fc8d3926f8
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
7397
diff
changeset
|
5373 |
::close(fd); |
1 | 5374 |
while (::stat(filename, &buf) == 0) { |
5375 |
(void)::poll(NULL, 0, 100); |
|
5376 |
} |
|
5377 |
} else { |
|
5378 |
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
|
5379 |
"Could not open pause file '%s', continuing immediately.\n", filename); |
1 | 5380 |
} |
5381 |
} |
|
5382 |
||
5383 |
||
27458
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5384 |
// Refer to the comments in os_solaris.cpp park-unpark. The next two |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5385 |
// comment paragraphs are worth repeating here: |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5386 |
// |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5387 |
// Assumption: |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5388 |
// Only one parker can exist on an event, which is why we allocate |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5389 |
// them per-thread. Multiple unparkers can coexist. |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5390 |
// |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5391 |
// _Event serves as a restricted-range semaphore. |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5392 |
// -1 : thread is blocked, i.e. there is a waiter |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5393 |
// 0 : neutral: thread is running or ready, |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5394 |
// could have been signaled after a wait started |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5395 |
// 1 : signaled - thread is running or ready |
1 | 5396 |
// |
5397 |
||
5398 |
// utility to compute the abstime argument to timedwait: |
|
5399 |
// millis is the relative timeout time |
|
5400 |
// abstime will be the absolute timeout time |
|
5401 |
// TODO: replace compute_abstime() with unpackTime() |
|
5402 |
||
5403 |
static struct timespec* compute_abstime(timespec* abstime, jlong millis) { |
|
5404 |
if (millis < 0) millis = 0; |
|
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5405 |
|
1 | 5406 |
jlong seconds = millis / 1000; |
5407 |
millis %= 1000; |
|
5408 |
if (seconds > 50000000) { // see man cond_timedwait(3T) |
|
5409 |
seconds = 50000000; |
|
5410 |
} |
|
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5411 |
|
22891
1f5d1fff23fa
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
fparain
parents:
22749
diff
changeset
|
5412 |
if (os::supports_monotonic_clock()) { |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5413 |
struct timespec now; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5414 |
int status = os::Linux::clock_gettime(CLOCK_MONOTONIC, &now); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5415 |
assert_status(status == 0, status, "clock_gettime"); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5416 |
abstime->tv_sec = now.tv_sec + seconds; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5417 |
long nanos = now.tv_nsec + millis * NANOSECS_PER_MILLISEC; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5418 |
if (nanos >= NANOSECS_PER_SEC) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5419 |
abstime->tv_sec += 1; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5420 |
nanos -= NANOSECS_PER_SEC; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5421 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5422 |
abstime->tv_nsec = nanos; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5423 |
} else { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5424 |
struct timeval now; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5425 |
int status = gettimeofday(&now, NULL); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5426 |
assert(status == 0, "gettimeofday"); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5427 |
abstime->tv_sec = now.tv_sec + seconds; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5428 |
long usec = now.tv_usec + millis * 1000; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5429 |
if (usec >= 1000000) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5430 |
abstime->tv_sec += 1; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5431 |
usec -= 1000000; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5432 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5433 |
abstime->tv_nsec = usec * 1000; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5434 |
} |
1 | 5435 |
return abstime; |
5436 |
} |
|
5437 |
||
5438 |
void os::PlatformEvent::park() { // AKA "down()" |
|
27458
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5439 |
// Transitions for _Event: |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5440 |
// -1 => -1 : illegal |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5441 |
// 1 => 0 : pass - return immediately |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5442 |
// 0 => -1 : block; then set _Event to 0 before returning |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5443 |
|
1 | 5444 |
// Invariant: Only the thread associated with the Event/PlatformEvent |
5445 |
// may call park(). |
|
5446 |
// TODO: assert that _Assoc != NULL or _Assoc == Self |
|
25472
381638db28e6
8047104: cleanup misc issues prior to Contended Locking reorder and cache
dcubed
parents:
25468
diff
changeset
|
5447 |
assert(_nParked == 0, "invariant"); |
381638db28e6
8047104: cleanup misc issues prior to Contended Locking reorder and cache
dcubed
parents:
25468
diff
changeset
|
5448 |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5449 |
int v; |
1 | 5450 |
for (;;) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5451 |
v = _Event; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5452 |
if (Atomic::cmpxchg(v-1, &_Event, v) == v) break; |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5453 |
} |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5454 |
guarantee(v >= 0, "invariant"); |
1 | 5455 |
if (v == 0) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5456 |
// Do this the hard way by blocking ... |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5457 |
int status = pthread_mutex_lock(_mutex); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5458 |
assert_status(status == 0, status, "mutex_lock"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5459 |
guarantee(_nParked == 0, "invariant"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5460 |
++_nParked; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5461 |
while (_Event < 0) { |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5462 |
status = pthread_cond_wait(_cond, _mutex); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5463 |
// for some reason, under 2.7 lwp_cond_wait() may return ETIME ... |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5464 |
// Treat this the same as if the wait was interrupted |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5465 |
if (status == ETIME) { status = EINTR; } |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5466 |
assert_status(status == 0 || status == EINTR, status, "cond_wait"); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5467 |
} |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5468 |
--_nParked; |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5469 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5470 |
_Event = 0; |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5471 |
status = pthread_mutex_unlock(_mutex); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5472 |
assert_status(status == 0, status, "mutex_unlock"); |
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5473 |
// Paranoia to ensure our locked and lock-free paths interact |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5474 |
// correctly with each other. |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5475 |
OrderAccess::fence(); |
1 | 5476 |
} |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5477 |
guarantee(_Event >= 0, "invariant"); |
1 | 5478 |
} |
5479 |
||
5480 |
int os::PlatformEvent::park(jlong millis) { |
|
27458
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5481 |
// Transitions for _Event: |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5482 |
// -1 => -1 : illegal |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5483 |
// 1 => 0 : pass - return immediately |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5484 |
// 0 => -1 : block; then set _Event to 0 before returning |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5485 |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5486 |
guarantee(_nParked == 0, "invariant"); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5487 |
|
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5488 |
int v; |
1 | 5489 |
for (;;) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5490 |
v = _Event; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5491 |
if (Atomic::cmpxchg(v-1, &_Event, v) == v) break; |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5492 |
} |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5493 |
guarantee(v >= 0, "invariant"); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5494 |
if (v != 0) return OS_OK; |
1 | 5495 |
|
5496 |
// We do this the hard way, by blocking the thread. |
|
5497 |
// Consider enforcing a minimum timeout value. |
|
5498 |
struct timespec abst; |
|
5499 |
compute_abstime(&abst, millis); |
|
5500 |
||
5501 |
int ret = OS_TIMEOUT; |
|
5502 |
int status = pthread_mutex_lock(_mutex); |
|
5503 |
assert_status(status == 0, status, "mutex_lock"); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5504 |
guarantee(_nParked == 0, "invariant"); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5505 |
++_nParked; |
1 | 5506 |
|
5507 |
// Object.wait(timo) will return because of |
|
5508 |
// (a) notification |
|
5509 |
// (b) timeout |
|
5510 |
// (c) thread.interrupt |
|
5511 |
// |
|
5512 |
// Thread.interrupt and object.notify{All} both call Event::set. |
|
5513 |
// That is, we treat thread.interrupt as a special case of notification. |
|
24931
4bba680186bd
8044339: Update FilterSpuriousWakeups documentation. Review "Solaris only" vm options descriptions
iignatyev
parents:
24424
diff
changeset
|
5514 |
// We ignore spurious OS wakeups unless FilterSpuriousWakeups is false. |
4bba680186bd
8044339: Update FilterSpuriousWakeups documentation. Review "Solaris only" vm options descriptions
iignatyev
parents:
24424
diff
changeset
|
5515 |
// We assume all ETIME returns are valid. |
1 | 5516 |
// |
5517 |
// TODO: properly differentiate simultaneous notify+interrupt. |
|
5518 |
// In that case, we should propagate the notify to another waiter. |
|
5519 |
||
5520 |
while (_Event < 0) { |
|
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
5521 |
status = pthread_cond_timedwait(_cond, _mutex, &abst); |
1 | 5522 |
assert_status(status == 0 || status == EINTR || |
5523 |
status == ETIME || status == ETIMEDOUT, |
|
5524 |
status, "cond_timedwait"); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5525 |
if (!FilterSpuriousWakeups) break; // previous semantics |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5526 |
if (status == ETIME || status == ETIMEDOUT) break; |
1 | 5527 |
// We consume and ignore EINTR and spurious wakeups. |
5528 |
} |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5529 |
--_nParked; |
1 | 5530 |
if (_Event >= 0) { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5531 |
ret = OS_OK; |
1 | 5532 |
} |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5533 |
_Event = 0; |
1 | 5534 |
status = pthread_mutex_unlock(_mutex); |
5535 |
assert_status(status == 0, status, "mutex_unlock"); |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5536 |
assert(_nParked == 0, "invariant"); |
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5537 |
// Paranoia to ensure our locked and lock-free paths interact |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5538 |
// correctly with each other. |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5539 |
OrderAccess::fence(); |
1 | 5540 |
return ret; |
5541 |
} |
|
5542 |
||
5543 |
void os::PlatformEvent::unpark() { |
|
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5544 |
// Transitions for _Event: |
27458
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5545 |
// 0 => 1 : just return |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5546 |
// 1 => 1 : just return |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5547 |
// -1 => either 0 or 1; must signal target thread |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5548 |
// That is, we can safely transition _Event from -1 to either |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5549 |
// 0 or 1. |
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5550 |
// See also: "Semaphores in Plan 9" by Mullender & Cox |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5551 |
// |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5552 |
// Note: Forcing a transition from "-1" to "1" on an unpark() means |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5553 |
// that it will take two back-to-back park() calls for the owning |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5554 |
// thread to block. This has the benefit of forcing a spurious return |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5555 |
// from the first park() call after an unpark() call which will help |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5556 |
// shake out uses of park() and unpark() without condition variables. |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5557 |
|
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5558 |
if (Atomic::xchg(1, &_Event) >= 0) return; |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5559 |
|
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5560 |
// Wait for the thread associated with the event to vacate |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5561 |
int status = pthread_mutex_lock(_mutex); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5562 |
assert_status(status == 0, status, "mutex_lock"); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5563 |
int AnyWaiters = _nParked; |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5564 |
assert(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5565 |
status = pthread_mutex_unlock(_mutex); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5566 |
assert_status(status == 0, status, "mutex_unlock"); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5567 |
if (AnyWaiters != 0) { |
27458
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5568 |
// Note that we signal() *after* dropping the lock for "immortal" Events. |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5569 |
// This is safe and avoids a common class of futile wakeups. In rare |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5570 |
// circumstances this can cause a thread to return prematurely from |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5571 |
// cond_{timed}wait() but the spurious wakeup is benign and the victim |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5572 |
// will simply re-test the condition and re-park itself. |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5573 |
// This provides particular benefit if the underlying platform does not |
eb5f1b4f01e1
8061552: Contended Locking speedup PlatformEvent unpark bucket
dcubed
parents:
27457
diff
changeset
|
5574 |
// provide wait morphing. |
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5575 |
status = pthread_cond_signal(_cond); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5576 |
assert_status(status == 0, status, "cond_signal"); |
1 | 5577 |
} |
5578 |
} |
|
5579 |
||
5580 |
||
5581 |
// JSR166 |
|
5582 |
// ------------------------------------------------------- |
|
5583 |
||
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5584 |
// The solaris and linux implementations of park/unpark are fairly |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5585 |
// conservative for now, but can be improved. They currently use a |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5586 |
// mutex/condvar pair, plus a a count. |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5587 |
// Park decrements count if > 0, else does a condvar wait. Unpark |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5588 |
// sets count to 1 and signals condvar. Only one thread ever waits |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5589 |
// on the condvar. Contention seen when trying to park implies that someone |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5590 |
// is unparking you, so don't wait. And spurious returns are fine, so there |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5591 |
// is no need to track notifications. |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5592 |
|
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5593 |
// This code is common to linux and solaris and will be moved to a |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5594 |
// common place in dolphin. |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5595 |
// |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5596 |
// The passed in time value is either a relative time in nanoseconds |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5597 |
// or an absolute time in milliseconds. Either way it has to be unpacked |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5598 |
// into suitable seconds and nanoseconds components and stored in the |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5599 |
// given timespec structure. |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5600 |
// Given time is a 64-bit value and the time_t used in the timespec is only |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5601 |
// a signed-32-bit value (except on 64-bit Linux) we have to watch for |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5602 |
// overflow if times way in the future are given. Further on Solaris versions |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5603 |
// prior to 10 there is a restriction (see cond_timedwait) that the specified |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5604 |
// number of seconds, in abstime, is less than current_time + 100,000,000. |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5605 |
// As it will be 28 years before "now + 100000000" will overflow we can |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5606 |
// ignore overflow and just impose a hard-limit on seconds using the value |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5607 |
// of "now + 100,000,000". This places a limit on the timeout of about 3.17 |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5608 |
// years from "now". |
1 | 5609 |
|
5610 |
static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5611 |
assert(time > 0, "convertTime"); |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5612 |
time_t max_secs = 0; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5613 |
|
22891
1f5d1fff23fa
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
fparain
parents:
22749
diff
changeset
|
5614 |
if (!os::supports_monotonic_clock() || isAbsolute) { |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5615 |
struct timeval now; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5616 |
int status = gettimeofday(&now, NULL); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5617 |
assert(status == 0, "gettimeofday"); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5618 |
|
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5619 |
max_secs = now.tv_sec + MAX_SECS; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5620 |
|
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5621 |
if (isAbsolute) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5622 |
jlong secs = time / 1000; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5623 |
if (secs > max_secs) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5624 |
absTime->tv_sec = max_secs; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5625 |
} else { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5626 |
absTime->tv_sec = secs; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5627 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5628 |
absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5629 |
} else { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5630 |
jlong secs = time / NANOSECS_PER_SEC; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5631 |
if (secs >= MAX_SECS) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5632 |
absTime->tv_sec = max_secs; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5633 |
absTime->tv_nsec = 0; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5634 |
} else { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5635 |
absTime->tv_sec = now.tv_sec + secs; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5636 |
absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5637 |
if (absTime->tv_nsec >= NANOSECS_PER_SEC) { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5638 |
absTime->tv_nsec -= NANOSECS_PER_SEC; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5639 |
++absTime->tv_sec; // note: this must be <= max_secs |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5640 |
} |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5641 |
} |
1 | 5642 |
} |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5643 |
} else { |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5644 |
// must be relative using monotonic clock |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5645 |
struct timespec now; |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5646 |
int status = os::Linux::clock_gettime(CLOCK_MONOTONIC, &now); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5647 |
assert_status(status == 0, status, "clock_gettime"); |
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5648 |
max_secs = now.tv_sec + MAX_SECS; |
1 | 5649 |
jlong secs = time / NANOSECS_PER_SEC; |
5650 |
if (secs >= MAX_SECS) { |
|
5651 |
absTime->tv_sec = max_secs; |
|
5652 |
absTime->tv_nsec = 0; |
|
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5653 |
} else { |
1 | 5654 |
absTime->tv_sec = now.tv_sec + secs; |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5655 |
absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_nsec; |
1 | 5656 |
if (absTime->tv_nsec >= NANOSECS_PER_SEC) { |
5657 |
absTime->tv_nsec -= NANOSECS_PER_SEC; |
|
5658 |
++absTime->tv_sec; // note: this must be <= max_secs |
|
5659 |
} |
|
5660 |
} |
|
5661 |
} |
|
5662 |
assert(absTime->tv_sec >= 0, "tv_sec < 0"); |
|
5663 |
assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); |
|
5664 |
assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); |
|
5665 |
assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); |
|
5666 |
} |
|
5667 |
||
5668 |
void Parker::park(bool isAbsolute, jlong time) { |
|
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5669 |
// Ideally we'd do something useful while spinning, such |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5670 |
// as calling unpackTime(). |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5671 |
|
1 | 5672 |
// Optional fast-path check: |
5673 |
// Return immediately if a permit is available. |
|
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5674 |
// We depend on Atomic::xchg() having full barrier semantics |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5675 |
// since we are doing a lock-free update to _counter. |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5676 |
if (Atomic::xchg(0, &_counter) > 0) return; |
1 | 5677 |
|
5678 |
Thread* thread = Thread::current(); |
|
5679 |
assert(thread->is_Java_thread(), "Must be JavaThread"); |
|
5680 |
JavaThread *jt = (JavaThread *)thread; |
|
5681 |
||
5682 |
// Optional optimization -- avoid state transitions if there's an interrupt pending. |
|
5683 |
// Check interrupt before trying to wait |
|
5684 |
if (Thread::is_interrupted(thread, false)) { |
|
5685 |
return; |
|
5686 |
} |
|
5687 |
||
5688 |
// Next, demultiplex/decode time arguments |
|
5689 |
timespec absTime; |
|
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5690 |
if (time < 0 || (isAbsolute && time == 0)) { // don't wait at all |
1 | 5691 |
return; |
5692 |
} |
|
5693 |
if (time > 0) { |
|
5694 |
unpackTime(&absTime, isAbsolute, time); |
|
5695 |
} |
|
5696 |
||
5697 |
||
5698 |
// Enter safepoint region |
|
5699 |
// Beware of deadlocks such as 6317397. |
|
5700 |
// The per-thread Parker:: mutex is a classic leaf-lock. |
|
5701 |
// In particular a thread must never block on the Threads_lock while |
|
5702 |
// holding the Parker:: mutex. If safepoints are pending both the |
|
5703 |
// the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. |
|
5704 |
ThreadBlockInVM tbivm(jt); |
|
5705 |
||
5706 |
// Don't wait if cannot get lock since interference arises from |
|
5707 |
// unblocking. Also. check interrupt before trying wait |
|
5708 |
if (Thread::is_interrupted(thread, false) || pthread_mutex_trylock(_mutex) != 0) { |
|
5709 |
return; |
|
5710 |
} |
|
5711 |
||
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5712 |
int status; |
1 | 5713 |
if (_counter > 0) { // no wait needed |
5714 |
_counter = 0; |
|
5715 |
status = pthread_mutex_unlock(_mutex); |
|
36087
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5716 |
assert_status(status == 0, status, "invariant"); |
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5717 |
// Paranoia to ensure our locked and lock-free paths interact |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5718 |
// correctly with each other and Java-level accesses. |
4487
de1359156181
6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
dholmes
parents:
4013
diff
changeset
|
5719 |
OrderAccess::fence(); |
1 | 5720 |
return; |
5721 |
} |
|
5722 |
||
5723 |
#ifdef ASSERT |
|
5724 |
// Don't catch signals while blocked; let the running threads have the signals. |
|
5725 |
// (This allows a debugger to break into the running thread.) |
|
5726 |
sigset_t oldsigs; |
|
5727 |
sigset_t* allowdebug_blocked = os::Linux::allowdebug_blocked_signals(); |
|
5728 |
pthread_sigmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); |
|
5729 |
#endif |
|
5730 |
||
5731 |
OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); |
|
5732 |
jt->set_suspend_equivalent(); |
|
5733 |
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() |
|
5734 |
||
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5735 |
assert(_cur_index == -1, "invariant"); |
1 | 5736 |
if (time == 0) { |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5737 |
_cur_index = REL_INDEX; // arbitrary choice when not timed |
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5738 |
status = pthread_cond_wait(&_cond[_cur_index], _mutex); |
1 | 5739 |
} else { |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5740 |
_cur_index = isAbsolute ? ABS_INDEX : REL_INDEX; |
31377
229b4eb67c2b
8078513: [linux] Clean up code relevant to LinuxThreads implementation
stuefe
parents:
31357
diff
changeset
|
5741 |
status = pthread_cond_timedwait(&_cond[_cur_index], _mutex, &absTime); |
1 | 5742 |
} |
19964
a3a04a9d29ac
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
dholmes
parents:
19732
diff
changeset
|
5743 |
_cur_index = -1; |
1 | 5744 |
assert_status(status == 0 || status == EINTR || |
5745 |
status == ETIME || status == ETIMEDOUT, |
|
5746 |
status, "cond_timedwait"); |
|
5747 |
||
5748 |
#ifdef ASSERT |
|
5749 |
pthread_sigmask(SIG_SETMASK, &oldsigs, NULL); |
|
5750 |
#endif |
|
5751 |
||
25064
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5752 |
_counter = 0; |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5753 |
status = pthread_mutex_unlock(_mutex); |
244218e6ec0a
8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
dcubed
parents:
24931
diff
changeset
|
5754 |
assert_status(status == 0, status, "invariant"); |
15234
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5755 |
// Paranoia to ensure our locked and lock-free paths interact |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5756 |
// correctly with each other and Java-level accesses. |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5757 |
OrderAccess::fence(); |
ff1f01be5fbd
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
15096
diff
changeset
|
5758 |
|
1 | 5759 |
// If externally suspended while waiting, re-suspend |
5760 |
if (jt->handle_special_suspend_equivalent_condition()) { |
|
5761 |
jt->java_suspend_self(); |
|
5762 |
} |
|
5763 |
} |
|
5764 |
||
5765 |
void Parker::unpark() { |
|
25472
381638db28e6
8047104: cleanup misc issues prior to Contended Locking reorder and cache
dcubed
parents:
25468
diff
changeset
|
5766 |
int status = pthread_mutex_lock(_mutex); |
36087
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5767 |
assert_status(status == 0, status, "invariant"); |
25472
381638db28e6
8047104: cleanup misc issues prior to Contended Locking reorder and cache
dcubed
parents:
25468
diff
changeset
|
5768 |
const int s = _counter; |
1 | 5769 |
_counter = 1; |
36087
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5770 |
// must capture correct index before unlocking |
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5771 |
int index = _cur_index; |
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5772 |
status = pthread_mutex_unlock(_mutex); |
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5773 |
assert_status(status == 0, status, "invariant"); |
36096 | 5774 |
if (s < 1 && index != -1) { |
36087
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5775 |
// thread is definitely parked |
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5776 |
status = pthread_cond_signal(&_cond[index]); |
c7770c4909d0
8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
dholmes
parents:
35884
diff
changeset
|
5777 |
assert_status(status == 0, status, "invariant"); |
1 | 5778 |
} |
5779 |
} |
|
5780 |
||
5781 |
||
5782 |
extern char** environ; |
|
5783 |
||
5784 |
// Run the specified command in a separate process. Return its exit value, |
|
5785 |
// or -1 on failure (e.g. can't fork a new process). |
|
5786 |
// Unlike system(), this function can be called from signal handler. It |
|
5787 |
// doesn't block SIGINT et al. |
|
5788 |
int os::fork_and_exec(char* cmd) { |
|
745
47129a5cacd3
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
388
diff
changeset
|
5789 |
const char * argv[4] = {"sh", "-c", cmd, NULL}; |
1 | 5790 |
|
30745
8ebe80838174
8078470: [Linux] Replace syscall use in os::fork_and_exec with glibc fork() and execve()
dholmes
parents:
30605
diff
changeset
|
5791 |
pid_t pid = fork(); |
1 | 5792 |
|
5793 |
if (pid < 0) { |
|
5794 |
// fork failed |
|
5795 |
return -1; |
|
5796 |
||
5797 |
} else if (pid == 0) { |
|
5798 |
// child process |
|
5799 |
||
30745
8ebe80838174
8078470: [Linux] Replace syscall use in os::fork_and_exec with glibc fork() and execve()
dholmes
parents:
30605
diff
changeset
|
5800 |
execve("/bin/sh", (char* const*)argv, environ); |
1 | 5801 |
|
5802 |
// execve failed |
|
5803 |
_exit(-1); |
|
5804 |
||
5805 |
} else { |
|
5806 |
// copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't |
|
5807 |
// care about the actual exit code, for now. |
|
5808 |
||
5809 |
int status; |
|
5810 |
||
5811 |
// Wait for the child process to exit. This returns immediately if |
|
5812 |
// the child has already exited. */ |
|
5813 |
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
|
5814 |
switch (errno) { |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5815 |
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
|
5816 |
case EINTR: break; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5817 |
default: return -1; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5818 |
} |
1 | 5819 |
} |
5820 |
||
5821 |
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
|
5822 |
// 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
|
5823 |
return WEXITSTATUS(status); |
1 | 5824 |
} 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
|
5825 |
// 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
|
5826 |
// 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
|
5827 |
// 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
|
5828 |
// 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
|
5829 |
// 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
|
5830 |
return 0x80 + WTERMSIG(status); |
1 | 5831 |
} else { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5832 |
// 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
|
5833 |
return status; |
1 | 5834 |
} |
5835 |
} |
|
5836 |
} |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5837 |
|
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5838 |
// is_headless_jre() |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5839 |
// |
11161
ec855b5a23c2
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
10739
diff
changeset
|
5840 |
// Test for the existence of xawt/libmawt.so or libawt_xawt.so |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5841 |
// in order to report if we are running in a headless jre |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5842 |
// |
11161
ec855b5a23c2
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
10739
diff
changeset
|
5843 |
// Since JDK8 xawt/libmawt.so was moved into the same directory |
ec855b5a23c2
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
10739
diff
changeset
|
5844 |
// as libawt.so, and renamed libawt_xawt.so |
ec855b5a23c2
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
10739
diff
changeset
|
5845 |
// |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5846 |
bool os::is_headless_jre() { |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5847 |
struct stat statbuf; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5848 |
char buf[MAXPATHLEN]; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5849 |
char libmawtpath[MAXPATHLEN]; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5850 |
const char *xawtstr = "/xawt/libmawt.so"; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5851 |
const char *new_xawtstr = "/libawt_xawt.so"; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5852 |
char *p; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5853 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5854 |
// Get path to libjvm.so |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5855 |
os::jvm_path(buf, sizeof(buf)); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5856 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5857 |
// Get rid of libjvm.so |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5858 |
p = strrchr(buf, '/'); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5859 |
if (p == NULL) { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5860 |
return false; |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5861 |
} else { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5862 |
*p = '\0'; |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5863 |
} |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5864 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5865 |
// Get rid of client or server |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5866 |
p = strrchr(buf, '/'); |
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5867 |
if (p == NULL) { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5868 |
return false; |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5869 |
} else { |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5870 |
*p = '\0'; |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5871 |
} |
26683
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5872 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5873 |
// check xawt/libmawt.so |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5874 |
strcpy(libmawtpath, buf); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5875 |
strcat(libmawtpath, xawtstr); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5876 |
if (::stat(libmawtpath, &statbuf) == 0) return false; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5877 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5878 |
// check libawt_xawt.so |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5879 |
strcpy(libmawtpath, buf); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5880 |
strcat(libmawtpath, new_xawtstr); |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5881 |
if (::stat(libmawtpath, &statbuf) == 0) return false; |
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5882 |
|
a02753d5a0b2
8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26135
diff
changeset
|
5883 |
return true; |
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5884 |
} |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5922
diff
changeset
|
5885 |
|
13198
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5886 |
// Get the default path to the core file |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5887 |
// Returns the length of the string |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5888 |
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
|
5889 |
/* |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5890 |
* 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
|
5891 |
* 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
|
5892 |
*/ |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5893 |
const int core_pattern_len = 129; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5894 |
char core_pattern[core_pattern_len] = {0}; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5895 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5896 |
int core_pattern_file = ::open("/proc/sys/kernel/core_pattern", O_RDONLY); |
33794 | 5897 |
if (core_pattern_file == -1) { |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5898 |
return -1; |
13198
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5899 |
} |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5900 |
|
33794 | 5901 |
ssize_t ret = ::read(core_pattern_file, core_pattern, core_pattern_len); |
5902 |
::close(core_pattern_file); |
|
5903 |
if (ret <= 0 || ret >= core_pattern_len || core_pattern[0] == '\n') { |
|
5904 |
return -1; |
|
5905 |
} |
|
5906 |
if (core_pattern[ret-1] == '\n') { |
|
5907 |
core_pattern[ret-1] = '\0'; |
|
5908 |
} else { |
|
5909 |
core_pattern[ret] = '\0'; |
|
5910 |
} |
|
5911 |
||
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5912 |
char *pid_pos = strstr(core_pattern, "%p"); |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5913 |
int written; |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5914 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5915 |
if (core_pattern[0] == '/') { |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
5916 |
written = jio_snprintf(buffer, bufferSize, "%s", core_pattern); |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5917 |
} else { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5918 |
char cwd[PATH_MAX]; |
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 |
const char* p = get_current_directory(cwd, PATH_MAX); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5921 |
if (p == NULL) { |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5922 |
return -1; |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5923 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5924 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5925 |
if (core_pattern[0] == '|') { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5926 |
written = jio_snprintf(buffer, bufferSize, |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5927 |
"\"%s\" (or dumping to %s/core.%d)", |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5928 |
&core_pattern[1], p, current_process_id()); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5929 |
} else { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5930 |
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
|
5931 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5932 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5933 |
|
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5934 |
if (written < 0) { |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5935 |
return -1; |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5936 |
} |
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5937 |
|
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5938 |
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
|
5939 |
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
|
5940 |
|
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5941 |
if (core_uses_pid_file != -1) { |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5942 |
char core_uses_pid = 0; |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5943 |
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
|
5944 |
::close(core_uses_pid_file); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5945 |
|
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29474
diff
changeset
|
5946 |
if (core_uses_pid == '1') { |
28172
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5947 |
jio_snprintf(buffer + written, bufferSize - written, |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5948 |
".%d", current_process_id()); |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5949 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5950 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5951 |
} |
19ae5c844e75
8059586: hs_err report should treat redirected core pattern
dholmes
parents:
27926
diff
changeset
|
5952 |
|
13198
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5953 |
return strlen(buffer); |
271c557a7623
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
13195
diff
changeset
|
5954 |
} |
10025
57fe03f10cf2
7061212: use o/s low memory notification in embedded builds
jcoomes
parents:
10023
diff
changeset
|
5955 |
|
34305
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5956 |
bool os::start_debugging(char *buf, int buflen) { |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5957 |
int len = (int)strlen(buf); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5958 |
char *p = &buf[len]; |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5959 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5960 |
jio_snprintf(p, buflen-len, |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5961 |
"\n\n" |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5962 |
"Do you want to debug the problem?\n\n" |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5963 |
"To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " UINTX_FORMAT " (" INTPTR_FORMAT ")\n" |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5964 |
"Enter 'yes' to launch gdb automatically (PATH must include gdb)\n" |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5965 |
"Otherwise, press RETURN to abort...", |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5966 |
os::current_process_id(), os::current_process_id(), |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5967 |
os::current_thread_id(), os::current_thread_id()); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5968 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5969 |
bool yes = os::message_box("Unexpected Error", buf); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5970 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5971 |
if (yes) { |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5972 |
// yes, user asked VM to launch debugger |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5973 |
jio_snprintf(buf, sizeof(buf), "gdb /proc/%d/exe %d", |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5974 |
os::current_process_id(), os::current_process_id()); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5975 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5976 |
os::fork_and_exec(buf); |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5977 |
yes = false; |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5978 |
} |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5979 |
return yes; |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5980 |
} |
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5981 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5982 |
|
e399e6b44631
8136978: Much nearly duplicated code for vmError support
sebastian
parents:
34145
diff
changeset
|
5983 |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5984 |
/////////////// Unit tests /////////////// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5985 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5986 |
#ifndef PRODUCT |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5987 |
|
26684
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5988 |
#define test_log(...) \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5989 |
do { \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5990 |
if (VerboseInternalVMTests) { \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5991 |
tty->print_cr(__VA_ARGS__); \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5992 |
tty->flush(); \ |
d1221849ea3d
8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
dcubed
parents:
26683
diff
changeset
|
5993 |
} \ |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5994 |
} while (false) |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5995 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5996 |
class TestReserveMemorySpecial : AllStatic { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5997 |
public: |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5998 |
static void small_page_write(void* addr, size_t size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
5999 |
size_t page_size = os::vm_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6000 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6001 |
char* end = (char*)addr + size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6002 |
for (char* p = (char*)addr; p < end; p += page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6003 |
*p = 1; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6004 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6005 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6006 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6007 |
static void test_reserve_memory_special_huge_tlbfs_only(size_t size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6008 |
if (!UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6009 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6010 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6011 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6012 |
test_log("test_reserve_memory_special_huge_tlbfs_only(" SIZE_FORMAT ")", size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6013 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6014 |
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
|
6015 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6016 |
if (addr != NULL) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6017 |
small_page_write(addr, size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6018 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6019 |
os::Linux::release_memory_special_huge_tlbfs(addr, size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6020 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6021 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6022 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6023 |
static void test_reserve_memory_special_huge_tlbfs_only() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6024 |
if (!UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6025 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6026 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6027 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6028 |
size_t lp = os::large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6029 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6030 |
for (size_t size = lp; size <= lp * 10; size += lp) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6031 |
test_reserve_memory_special_huge_tlbfs_only(size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6032 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6033 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6034 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6035 |
static void test_reserve_memory_special_huge_tlbfs_mixed() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6036 |
size_t lp = os::large_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6037 |
size_t ag = os::vm_allocation_granularity(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6038 |
|
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6039 |
// sizes to test |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6040 |
const size_t sizes[] = { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6041 |
lp, lp + ag, lp + lp / 2, lp * 2, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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|
6042 |
lp * 2 + ag, lp * 2 - ag, lp * 2 + lp / 2, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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changeset
|
6043 |
lp * 10, lp * 10 + lp / 2 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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changeset
|
6044 |
}; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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changeset
|
6045 |
const int num_sizes = sizeof(sizes) / sizeof(size_t); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6046 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6047 |
// For each size/alignment combination, we test three scenarios: |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6048 |
// 1) with req_addr == NULL |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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changeset
|
6049 |
// 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)
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changeset
|
6050 |
// 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)
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diff
changeset
|
6051 |
// 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)
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diff
changeset
|
6052 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6053 |
// 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)
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changeset
|
6054 |
// and aligned to the largest alignment we will be testing. |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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changeset
|
6055 |
const size_t mapping_size = sizes[num_sizes - 1] * 2; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6056 |
char* const mapping1 = (char*) ::mmap(NULL, mapping_size, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6057 |
PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6058 |
-1, 0); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6059 |
assert(mapping1 != MAP_FAILED, "should work"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6060 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6061 |
char* const mapping2 = (char*) ::mmap(NULL, mapping_size, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6062 |
PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6063 |
-1, 0); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6064 |
assert(mapping2 != MAP_FAILED, "should work"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6065 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6066 |
// 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)
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parents:
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diff
changeset
|
6067 |
// 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)
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parents:
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diff
changeset
|
6068 |
// mapping, still intact, as "bad" req_addr (case 3). |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6069 |
::munmap(mapping1, mapping_size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6070 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6071 |
// Case 1 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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diff
changeset
|
6072 |
test_log("%s, req_addr NULL:", __FUNCTION__); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6073 |
test_log("size align result"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6074 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6075 |
for (int i = 0; i < num_sizes; i++) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6076 |
const size_t size = sizes[i]; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
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parents:
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diff
changeset
|
6077 |
for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6078 |
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:
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diff
changeset
|
6079 |
test_log(SIZE_FORMAT_HEX " " SIZE_FORMAT_HEX " -> " PTR_FORMAT " %s", |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
6080 |
size, alignment, p2i(p), (p != NULL ? "" : "(failed)")); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6081 |
if (p != NULL) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6082 |
assert(is_ptr_aligned(p, alignment), "must be"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6083 |
small_page_write(p, size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6084 |
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
|
6085 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6086 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6087 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6088 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6089 |
// Case 2 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
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diff
changeset
|
6090 |
test_log("%s, req_addr non-NULL:", __FUNCTION__); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6091 |
test_log("size align req_addr result"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6092 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6093 |
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
|
6094 |
const size_t size = sizes[i]; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6095 |
for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6096 |
char* const req_addr = (char*) align_ptr_up(mapping1, alignment); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6097 |
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
|
6098 |
test_log(SIZE_FORMAT_HEX " " SIZE_FORMAT_HEX " " PTR_FORMAT " -> " PTR_FORMAT " %s", |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
6099 |
size, alignment, p2i(req_addr), p2i(p), |
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
6100 |
((p != NULL ? (p == req_addr ? "(exact match)" : "") : "(failed)"))); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6101 |
if (p != NULL) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6102 |
assert(p == req_addr, "must be"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6103 |
small_page_write(p, size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6104 |
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
|
6105 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6106 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6107 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6108 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6109 |
// Case 3 |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6110 |
test_log("%s, req_addr non-NULL with preexisting mapping:", __FUNCTION__); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6111 |
test_log("size align req_addr result"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6112 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6113 |
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
|
6114 |
const size_t size = sizes[i]; |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6115 |
for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) { |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6116 |
char* const req_addr = (char*) align_ptr_up(mapping2, alignment); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6117 |
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
|
6118 |
test_log(SIZE_FORMAT_HEX " " SIZE_FORMAT_HEX " " PTR_FORMAT " -> " PTR_FORMAT " %s", |
33148
68fa8b6c4340
8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
33105
diff
changeset
|
6119 |
size, alignment, p2i(req_addr), p2i(p), ((p != NULL ? "" : "(failed)"))); |
30605
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6120 |
// as the area around req_addr contains already existing mappings, the API should always |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6121 |
// return NULL (as per contract, it cannot return another address) |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6122 |
assert(p == NULL, "must be"); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6123 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6124 |
} |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6125 |
|
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6126 |
::munmap(mapping2, mapping_size); |
94be2f15efe5
8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
stuefe
parents:
30252
diff
changeset
|
6127 |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6128 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6129 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6130 |
static void test_reserve_memory_special_huge_tlbfs() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6131 |
if (!UseHugeTLBFS) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6132 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6133 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6134 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6135 |
test_reserve_memory_special_huge_tlbfs_only(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6136 |
test_reserve_memory_special_huge_tlbfs_mixed(); |
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 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6139 |
static void test_reserve_memory_special_shm(size_t size, size_t alignment) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6140 |
if (!UseSHM) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6141 |
return; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6142 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6143 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18683
diff
changeset
|
6144 |
test_log("test_reserve_memory_special_shm(" SIZE_FORMAT ", " SIZE_FORMAT ")", size, alignment); |
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6145 |
|
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6146 |
char* addr = os::Linux::reserve_memory_special_shm(size, alignment, NULL, false); |
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6147 |
|
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6148 |
if (addr != NULL) { |
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6149 |
assert(is_ptr_aligned(addr, alignment), "Check"); |
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6150 |
assert(is_ptr_aligned(addr, os::large_page_size()), "Check"); |
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6151 |
|
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6152 |
small_page_write(addr, size); |
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|
6153 |
|
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6154 |
os::Linux::release_memory_special_shm(addr, size); |
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6155 |
} |
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6156 |
} |
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|
6157 |
|
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|
6158 |
static void test_reserve_memory_special_shm() { |
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6159 |
size_t lp = os::large_page_size(); |
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6160 |
size_t ag = os::vm_allocation_granularity(); |
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|
6161 |
|
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6162 |
for (size_t size = ag; size < lp * 3; size += ag) { |
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6163 |
for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) { |
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6164 |
test_reserve_memory_special_shm(size, alignment); |
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|
6165 |
} |
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|
6166 |
} |
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|
6167 |
} |
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|
6168 |
|
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|
6169 |
static void test() { |
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6170 |
test_reserve_memory_special_huge_tlbfs(); |
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6171 |
test_reserve_memory_special_shm(); |
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|
6172 |
} |
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|
6173 |
}; |
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|
6174 |
|
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|
6175 |
void TestReserveMemorySpecial_test() { |
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6176 |
TestReserveMemorySpecial::test(); |
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|
6177 |
} |
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|
6178 |
|
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|
6179 |
#endif |