hotspot/src/os/solaris/vm/os_solaris.cpp
author iveresov
Fri, 29 Apr 2011 12:39:32 -0700
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7040485: Use transparent huge page on linux by default Summary: Turn on UseLargePages by default but try only HugeTLBFS method if it is not explicitly specified on the command line. Reviewed-by: ysr
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/*
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 * Copyright (c) 1997, 2011, 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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// 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 "interpreter/interpreter.hpp"
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#include "jvm_solaris.h"
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#include "memory/allocation.inline.hpp"
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#include "memory/filemap.hpp"
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#include "mutex_solaris.inline.hpp"
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#include "oops/oop.inline.hpp"
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#include "os_share_solaris.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/extendedPC.hpp"
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#include "runtime/globals.hpp"
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#include "runtime/interfaceSupport.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/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/threadCritical.hpp"
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#include "runtime/timer.hpp"
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#include "services/attachListener.hpp"
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#include "services/runtimeService.hpp"
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#include "thread_solaris.inline.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/growableArray.hpp"
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#include "utilities/vmError.hpp"
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#ifdef TARGET_ARCH_x86
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# include "assembler_x86.inline.hpp"
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# include "nativeInst_x86.hpp"
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#endif
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#ifdef TARGET_ARCH_sparc
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# include "assembler_sparc.inline.hpp"
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# include "nativeInst_sparc.hpp"
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#endif
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#ifdef COMPILER1
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#include "c1/c1_Runtime1.hpp"
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#endif
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#ifdef COMPILER2
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#include "opto/runtime.hpp"
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#endif
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// put OS-includes here
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# include <dlfcn.h>
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# include <errno.h>
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# include <exception>
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# include <link.h>
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# include <poll.h>
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# include <pthread.h>
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# include <pwd.h>
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# include <schedctl.h>
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# include <setjmp.h>
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# include <signal.h>
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# include <stdio.h>
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# include <alloca.h>
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# include <sys/filio.h>
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# include <sys/ipc.h>
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# include <sys/lwp.h>
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# include <sys/machelf.h>     // for elf Sym structure used by dladdr1
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# include <sys/mman.h>
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# include <sys/processor.h>
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# include <sys/procset.h>
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# include <sys/pset.h>
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# include <sys/resource.h>
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# include <sys/shm.h>
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# include <sys/socket.h>
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# include <sys/stat.h>
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# include <sys/systeminfo.h>
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# include <sys/time.h>
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# include <sys/times.h>
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# include <sys/types.h>
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# include <sys/wait.h>
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# include <sys/utsname.h>
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# include <thread.h>
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# include <unistd.h>
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# include <sys/priocntl.h>
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# include <sys/rtpriocntl.h>
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# include <sys/tspriocntl.h>
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# include <sys/iapriocntl.h>
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# include <sys/loadavg.h>
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# include <string.h>
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# include <stdio.h>
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# define _STRUCTURED_PROC 1  //  this gets us the new structured proc interfaces of 5.6 & later
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# include <sys/procfs.h>     //  see comment in <sys/procfs.h>
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#define MAX_PATH (2 * K)
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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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#ifdef _GNU_SOURCE
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// See bug #6514594
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extern "C" int madvise(caddr_t, size_t, int);
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extern "C"  int memcntl(caddr_t addr, size_t len, int cmd, caddr_t  arg,
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     int attr, int mask);
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#endif //_GNU_SOURCE
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/*
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  MPSS Changes Start.
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  The JVM binary needs to be built and run on pre-Solaris 9
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  systems, but the constants needed by MPSS are only in Solaris 9
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  header files.  They are textually replicated here to allow
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  building on earlier systems.  Once building on Solaris 8 is
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  no longer a requirement, these #defines can be replaced by ordinary
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  system .h inclusion.
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  In earlier versions of the  JDK and Solaris, we used ISM for large pages.
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  But ISM requires shared memory to achieve this and thus has many caveats.
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  MPSS is a fully transparent and is a cleaner way to get large pages.
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  Although we still require keeping ISM for backward compatiblitiy as well as
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  giving the opportunity to use large pages on older systems it is
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  recommended that MPSS be used for Solaris 9 and above.
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*/
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#ifndef MC_HAT_ADVISE
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struct memcntl_mha {
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  uint_t          mha_cmd;        /* command(s) */
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  uint_t          mha_flags;
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  size_t          mha_pagesize;
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};
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#define MC_HAT_ADVISE   7       /* advise hat map size */
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#define MHA_MAPSIZE_VA  0x1     /* set preferred page size */
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#define MAP_ALIGN       0x200   /* addr specifies alignment */
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#endif
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// MPSS Changes End.
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// Here are some liblgrp types from sys/lgrp_user.h to be able to
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// compile on older systems without this header file.
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#ifndef MADV_ACCESS_LWP
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# define  MADV_ACCESS_LWP         7       /* next LWP to access heavily */
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#endif
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#ifndef MADV_ACCESS_MANY
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# define  MADV_ACCESS_MANY        8       /* many processes to access heavily */
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#endif
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#ifndef LGRP_RSRC_CPU
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# define LGRP_RSRC_CPU           0       /* CPU resources */
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#endif
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#ifndef LGRP_RSRC_MEM
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# define LGRP_RSRC_MEM           1       /* memory resources */
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#endif
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// Some more macros from sys/mman.h that are not present in Solaris 8.
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#ifndef MAX_MEMINFO_CNT
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/*
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 * info_req request type definitions for meminfo
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 * request types starting with MEMINFO_V are used for Virtual addresses
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 * and should not be mixed with MEMINFO_PLGRP which is targeted for Physical
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 * addresses
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 */
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# define MEMINFO_SHIFT           16
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# define MEMINFO_MASK            (0xFF << MEMINFO_SHIFT)
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# define MEMINFO_VPHYSICAL       (0x01 << MEMINFO_SHIFT) /* get physical addr */
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# define MEMINFO_VLGRP           (0x02 << MEMINFO_SHIFT) /* get lgroup */
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# define MEMINFO_VPAGESIZE       (0x03 << MEMINFO_SHIFT) /* size of phys page */
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# define MEMINFO_VREPLCNT        (0x04 << MEMINFO_SHIFT) /* no. of replica */
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# define MEMINFO_VREPL           (0x05 << MEMINFO_SHIFT) /* physical replica */
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# define MEMINFO_VREPL_LGRP      (0x06 << MEMINFO_SHIFT) /* lgrp of replica */
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# define MEMINFO_PLGRP           (0x07 << MEMINFO_SHIFT) /* lgroup for paddr */
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/* maximum number of addresses meminfo() can process at a time */
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# define MAX_MEMINFO_CNT 256
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/* maximum number of request types */
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# define MAX_MEMINFO_REQ 31
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#endif
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// see thr_setprio(3T) for the basis of these numbers
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#define MinimumPriority 0
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#define NormalPriority  64
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#define MaximumPriority 127
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// Values for ThreadPriorityPolicy == 1
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int prio_policy1[MaxPriority+1] = { -99999, 0, 16, 32, 48, 64,
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                                        80, 96, 112, 124, 127 };
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// System parameters used internally
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static clock_t clock_tics_per_sec = 100;
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// Track if we have called enable_extended_FILE_stdio (on Solaris 10u4+)
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static bool enabled_extended_FILE_stdio = false;
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1
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// For diagnostics to print a message once. see run_periodic_checks
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static bool check_addr0_done = false;
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static sigset_t check_signal_done;
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static bool check_signals = true;
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address os::Solaris::handler_start;  // start pc of thr_sighndlrinfo
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address os::Solaris::handler_end;    // end pc of thr_sighndlrinfo
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address os::Solaris::_main_stack_base = NULL;  // 4352906 workaround
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// "default" initializers for missing libc APIs
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extern "C" {
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  static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; }
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  static int lwp_mutex_destroy(mutex_t *mx)                 { return 0; }
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  static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; }
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  static int lwp_cond_destroy(cond_t *cv)                   { return 0; }
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}
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// "default" initializers for pthread-based synchronization
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extern "C" {
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  static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; }
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  static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; }
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}
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// Thread Local Storage
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// This is common to all Solaris platforms so it is defined here,
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// in this common file.
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// The declarations are in the os_cpu threadLS*.hpp files.
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//
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// Static member initialization for TLS
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Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL};
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#ifndef PRODUCT
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#define _PCT(n,d)       ((100.0*(double)(n))/(double)(d))
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int ThreadLocalStorage::_tcacheHit = 0;
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int ThreadLocalStorage::_tcacheMiss = 0;
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void ThreadLocalStorage::print_statistics() {
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  int total = _tcacheMiss+_tcacheHit;
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  tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n",
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                _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total));
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}
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#undef _PCT
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#endif // PRODUCT
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Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id,
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                                                        int index) {
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  Thread *thread = get_thread_slow();
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  if (thread != NULL) {
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    address sp = os::current_stack_pointer();
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    guarantee(thread->_stack_base == NULL ||
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              (sp <= thread->_stack_base &&
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                 sp >= thread->_stack_base - thread->_stack_size) ||
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               is_error_reported(),
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              "sp must be inside of selected thread stack");
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    thread->set_self_raw_id(raw_id);  // mark for quick retrieval
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    _get_thread_cache[ index ] = thread;
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  }
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  return thread;
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}
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static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0};
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#define NO_CACHED_THREAD ((Thread*)all_zero)
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void ThreadLocalStorage::pd_set_thread(Thread* thread) {
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  // Store the new value before updating the cache to prevent a race
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  // between get_thread_via_cache_slowly() and this store operation.
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  os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread);
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  // Update thread cache with new thread if setting on thread create,
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  // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit.
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  uintptr_t raw = pd_raw_thread_id();
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  int ix = pd_cache_index(raw);
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  _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread;
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}
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void ThreadLocalStorage::pd_init() {
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  for (int i = 0; i < _pd_cache_size; i++) {
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    _get_thread_cache[i] = NO_CACHED_THREAD;
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  }
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}
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// Invalidate all the caches (happens to be the same as pd_init).
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void ThreadLocalStorage::pd_invalidate_all() { pd_init(); }
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#undef NO_CACHED_THREAD
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// END Thread Local Storage
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static inline size_t adjust_stack_size(address base, size_t size) {
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  if ((ssize_t)size < 0) {
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    // 4759953: Compensate for ridiculous stack size.
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    size = max_intx;
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  }
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  if (size > (size_t)base) {
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    // 4812466: Make sure size doesn't allow the stack to wrap the address space.
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    size = (size_t)base;
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  }
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  return size;
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}
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static inline stack_t get_stack_info() {
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  stack_t st;
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  int retval = thr_stksegment(&st);
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  st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size);
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  assert(retval == 0, "incorrect return value from thr_stksegment");
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  assert((address)&st < (address)st.ss_sp, "Invalid stack base returned");
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  assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned");
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  return st;
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}
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address os::current_stack_base() {
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  int r = thr_main() ;
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  guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
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  bool is_primordial_thread = r;
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  // Workaround 4352906, avoid calls to thr_stksegment by
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  // thr_main after the first one (it looks like we trash
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  // some data, causing the value for ss_sp to be incorrect).
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  if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) {
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    stack_t st = get_stack_info();
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    if (is_primordial_thread) {
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      // cache initial value of stack base
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      os::Solaris::_main_stack_base = (address)st.ss_sp;
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    }
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    return (address)st.ss_sp;
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  } else {
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    guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base");
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    return os::Solaris::_main_stack_base;
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  }
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}
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size_t os::current_stack_size() {
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  size_t size;
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  int r = thr_main() ;
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   369
  guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
489c9b5090e2 Initial load
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parents:
diff changeset
   370
  if(!r) {
489c9b5090e2 Initial load
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parents:
diff changeset
   371
    size = get_stack_info().ss_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   372
  } else {
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parents:
diff changeset
   373
    struct rlimit limits;
489c9b5090e2 Initial load
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parents:
diff changeset
   374
    getrlimit(RLIMIT_STACK, &limits);
489c9b5090e2 Initial load
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parents:
diff changeset
   375
    size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur);
489c9b5090e2 Initial load
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parents:
diff changeset
   376
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   377
  // base may not be page aligned
489c9b5090e2 Initial load
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parents:
diff changeset
   378
  address base = current_stack_base();
489c9b5090e2 Initial load
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parents:
diff changeset
   379
  address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
  return (size_t)(base - bottom);
489c9b5090e2 Initial load
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parents:
diff changeset
   381
}
489c9b5090e2 Initial load
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parents:
diff changeset
   382
2012
041fbc6030dd 6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents: 1686
diff changeset
   383
struct tm* os::localtime_pd(const time_t* clock, struct tm*  res) {
041fbc6030dd 6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents: 1686
diff changeset
   384
  return localtime_r(clock, res);
041fbc6030dd 6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents: 1686
diff changeset
   385
}
041fbc6030dd 6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents: 1686
diff changeset
   386
1
489c9b5090e2 Initial load
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parents:
diff changeset
   387
// interruptible infrastructure
489c9b5090e2 Initial load
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parents:
diff changeset
   388
489c9b5090e2 Initial load
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parents:
diff changeset
   389
// setup_interruptible saves the thread state before going into an
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
// interruptible system call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
// The saved state is used to restore the thread to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
// its former state whether or not an interrupt is received.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
// Used by classloader os::read
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
   394
// os::restartable_read calls skip this layer and stay in _thread_in_native
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
489c9b5090e2 Initial load
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parents:
diff changeset
   396
void os::Solaris::setup_interruptible(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
  JavaThreadState thread_state = thread->thread_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
  assert(thread_state != _thread_blocked, "Coming from the wrong thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
  assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  osthread->set_saved_interrupt_thread_state(thread_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
  thread->frame_anchor()->make_walkable(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  ThreadStateTransition::transition(thread, thread_state, _thread_blocked);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
// Version of setup_interruptible() for threads that are already in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
// _thread_blocked. Used by os_sleep().
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  thread->frame_anchor()->make_walkable(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
JavaThread* os::Solaris::setup_interruptible() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
  JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
  setup_interruptible(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  return thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
void os::Solaris::try_enable_extended_io() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
  typedef int (*enable_extended_FILE_stdio_t)(int, int);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  if (!UseExtendedFileIO) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  enable_extended_FILE_stdio_t enabler =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
    (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
                                         "enable_extended_FILE_stdio");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
  if (enabler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
    enabler(-1, -1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
JavaThread* os::Solaris::setup_interruptible_native() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  JavaThreadState thread_state = thread->thread_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
  assert(thread_state == _thread_in_native, "Assumed thread_in_native");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  return thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
void os::Solaris::cleanup_interruptible_native(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
  JavaThreadState thread_state = thread->thread_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
  assert(thread_state == _thread_in_native, "Assumed thread_in_native");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
// cleanup_interruptible reverses the effects of setup_interruptible
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
// setup_interruptible_already_blocked() does not need any cleanup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
void os::Solaris::cleanup_interruptible(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
  ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
// I/O interruption related counters called in _INTERRUPTIBLE
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
void os::Solaris::bump_interrupted_before_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  RuntimeService::record_interrupted_before_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
void os::Solaris::bump_interrupted_during_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
  RuntimeService::record_interrupted_during_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
static int _processors_online = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
         jint os::Solaris::_os_thread_limit = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
volatile jint os::Solaris::_os_thread_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
julong os::available_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
  return Solaris::available_memory();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
julong os::Solaris::available_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
  return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
julong os::Solaris::_physical_memory = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
julong os::physical_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
   return Solaris::physical_memory();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
julong os::allocatable_physical_memory(julong size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
   return size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
   julong result = MIN2(size, (julong)3835*M);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
   if (!is_allocatable(result)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
     // Memory allocations will be aligned but the alignment
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
     // is not known at this point.  Alignments will
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
     // be at most to LargePageSizeInBytes.  Protect
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
     // allocations from alignments up to illegal
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
     // values. If at this point 2G is illegal.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
     julong reasonable_size = (julong)2*G - 2 * LargePageSizeInBytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
     result =  MIN2(size, reasonable_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
   return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
static hrtime_t first_hrtime = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
static const hrtime_t hrtime_hz = 1000*1000*1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
const int LOCK_BUSY = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
const int LOCK_FREE = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
const int LOCK_INVALID = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
static volatile hrtime_t max_hrtime = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
static volatile int max_hrtime_lock = LOCK_FREE;     // Update counter with LSB as lock-in-progress
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
void os::Solaris::initialize_system_info() {
4493
9204129f065e 6843629: Make current hotspot build part of jdk5 control build
phh
parents: 4487
diff changeset
   517
  set_processor_count(sysconf(_SC_NPROCESSORS_CONF));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
  _processors_online = sysconf (_SC_NPROCESSORS_ONLN);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
  _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
int os::active_processor_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
  int online_cpus = sysconf(_SC_NPROCESSORS_ONLN);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
  pid_t pid = getpid();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
  psetid_t pset = PS_NONE;
1419
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   526
  // Are we running in a processor set or is there any processor set around?
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) {
1419
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   528
    uint_t pset_cpus;
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   529
    // Query the number of cpus available to us.
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   530
    if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) {
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   531
      assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check");
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   532
      _processors_online = pset_cpus;
561c0debbf22 6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist
xlu
parents: 1388
diff changeset
   533
      return pset_cpus;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
  // Otherwise return number of online cpus
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
  return online_cpus;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
static bool find_processors_in_pset(psetid_t        pset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
                                    processorid_t** id_array,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
                                    uint_t*         id_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
  bool result = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  // Find the number of processors in the processor set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
  if (pset_info(pset, NULL, id_length, NULL) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
    // Make up an array to hold their ids.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
    *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
    // Fill in the array with their processor ids.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
    if (pset_info(pset, NULL, id_length, *id_array) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
      result = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
// Callers of find_processors_online() must tolerate imprecise results --
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
// the system configuration can change asynchronously because of DR
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
// or explicit psradm operations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
// We also need to take care that the loop (below) terminates as the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
// number of processors online can change between the _SC_NPROCESSORS_ONLN
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
// request and the loop that builds the list of processor ids.   Unfortunately
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
// there's no reliable way to determine the maximum valid processor id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
// so we use a manifest constant, MAX_PROCESSOR_ID, instead.  See p_online
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
// man pages, which claim the processor id set is "sparse, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
// not too sparse".  MAX_PROCESSOR_ID is used to ensure that we eventually
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
// exit the loop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
// In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
// not available on S8.0.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
static bool find_processors_online(processorid_t** id_array,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
                                   uint*           id_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
  const processorid_t MAX_PROCESSOR_ID = 100000 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
  // Find the number of processors online.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  *id_length = sysconf(_SC_NPROCESSORS_ONLN);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  // Make up an array to hold their ids.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
  *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  // Processors need not be numbered consecutively.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  long found = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  processorid_t next = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
  while (found < *id_length && next < MAX_PROCESSOR_ID) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
    processor_info_t info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
    if (processor_info(next, &info) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
      // NB, PI_NOINTR processors are effectively online ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
      if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
        (*id_array)[found] = next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
        found += 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    next += 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
  if (found < *id_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
      // The loop above didn't identify the expected number of processors.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
      // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
      // and re-running the loop, above, but there's no guarantee of progress
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
      // if the system configuration is in flux.  Instead, we just return what
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
      // we've got.  Note that in the worst case find_processors_online() could
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
      // return an empty set.  (As a fall-back in the case of the empty set we
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
      // could just return the ID of the current processor).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
      *id_length = found ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
static bool assign_distribution(processorid_t* id_array,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
                                uint           id_length,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
                                uint*          distribution,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
                                uint           distribution_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  // We assume we can assign processorid_t's to uint's.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
  assert(sizeof(processorid_t) == sizeof(uint),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
         "can't convert processorid_t to uint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
  // Quick check to see if we won't succeed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  if (id_length < distribution_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  // Assign processor ids to the distribution.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
  // Try to shuffle processors to distribute work across boards,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  // assuming 4 processors per board.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
  const uint processors_per_board = ProcessDistributionStride;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  // Find the maximum processor id.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
  processorid_t max_id = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  for (uint m = 0; m < id_length; m += 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
    max_id = MAX2(max_id, id_array[m]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
  // The next id, to limit loops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  const processorid_t limit_id = max_id + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
  // Make up markers for available processors.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
  bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
  for (uint c = 0; c < limit_id; c += 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
    available_id[c] = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
  for (uint a = 0; a < id_length; a += 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
    available_id[id_array[a]] = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
  // Step by "boards", then by "slot", copying to "assigned".
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  // NEEDS_CLEANUP: The assignment of processors should be stateful,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  //                remembering which processors have been assigned by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
  //                previous calls, etc., so as to distribute several
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  //                independent calls of this method.  What we'd like is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
  //                It would be nice to have an API that let us ask
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
  //                how many processes are bound to a processor,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
  //                but we don't have that, either.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
  //                In the short term, "board" is static so that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
  //                subsequent distributions don't all start at board 0.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
  static uint board = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
  uint assigned = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
  // Until we've found enough processors ....
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
  while (assigned < distribution_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
    // ... find the next available processor in the board.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    for (uint slot = 0; slot < processors_per_board; slot += 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
      uint try_id = board * processors_per_board + slot;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
      if ((try_id < limit_id) && (available_id[try_id] == true)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
        distribution[assigned] = try_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
        available_id[try_id] = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
        assigned += 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
    board += 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
    if (board * processors_per_board + 0 >= limit_id) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
      board = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
  if (available_id != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
    FREE_C_HEAP_ARRAY(bool, available_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
bool os::distribute_processes(uint length, uint* distribution) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  bool result = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
  // Find the processor id's of all the available CPUs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
  processorid_t* id_array  = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
  uint           id_length = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
  // There are some races between querying information and using it,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
  // since processor sets can change dynamically.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
  psetid_t pset = PS_NONE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
  // Are we running in a processor set?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
  if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
    result = find_processors_in_pset(pset, &id_array, &id_length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
    result = find_processors_online(&id_array, &id_length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
  if (result == true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
    if (id_length >= length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
      result = assign_distribution(id_array, id_length, distribution, length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
      result = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
  if (id_array != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
    FREE_C_HEAP_ARRAY(processorid_t, id_array);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
bool os::bind_to_processor(uint processor_id) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
  // We assume that a processorid_t can be stored in a uint.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
  assert(sizeof(uint) == sizeof(processorid_t),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
         "can't convert uint to processorid_t");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  int bind_result =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
    processor_bind(P_LWPID,                       // bind LWP.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
                   P_MYID,                        // bind current LWP.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
                   (processorid_t) processor_id,  // id.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
                   NULL);                         // don't return old binding.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  return (bind_result == 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
bool os::getenv(const char* name, char* buffer, int len) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
  char* val = ::getenv( name );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  if ( val == NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
  ||   strlen(val) + 1  >  len ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
    if (len > 0)  buffer[0] = 0; // return a null string
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  strcpy( buffer, val );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
// Return true if user is running as root.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
bool os::have_special_privileges() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
  static bool init = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
  static bool privileges = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
  if (!init) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
    privileges = (getuid() != geteuid()) || (getgid() != getegid());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
    init = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
  return privileges;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
void os::init_system_properties_values() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
  char arch[12];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
  sysinfo(SI_ARCHITECTURE, arch, sizeof(arch));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
  // The next steps are taken in the product version:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
  // Obtain the JAVA_HOME value from the location of libjvm[_g].so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
  // This library should be located at:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
  // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm[_g].so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
  // If "/jre/lib/" appears at the right place in the path, then we
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  // assume libjvm[_g].so is installed in a JDK and we use this path.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
  // Otherwise exit with message: "Could not create the Java virtual machine."
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
  // The following extra steps are taken in the debugging version:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  // If "/jre/lib/" does NOT appear at the right place in the path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
  // instead of exit check for $JAVA_HOME environment variable.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
  // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
  // then we append a fake suffix "hotspot/libjvm[_g].so" to this path so
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  // it looks like libjvm[_g].so is installed there
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
  // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm[_g].so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
  // Otherwise exit.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
  // Important note: if the location of libjvm.so changes this
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
  // code needs to be changed accordingly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  // The next few definitions allow the code to be verbatim:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
#define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
#define free(p) FREE_C_HEAP_ARRAY(char, p)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
#define getenv(n) ::getenv(n)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
#define EXTENSIONS_DIR  "/lib/ext"
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
#define ENDORSED_DIR    "/lib/endorsed"
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
#define COMMON_DIR      "/usr/jdk/packages"
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
    /* sysclasspath, java_home, dll_dir */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
        char *home_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
        char *dll_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
        char *pslash;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
        char buf[MAXPATHLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
        os::jvm_path(buf, sizeof(buf));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
        // Found the full path to libjvm.so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
        // Now cut the path to <java_home>/jre if we can.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
        *(strrchr(buf, '/')) = '\0';  /* get rid of /libjvm.so */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
        pslash = strrchr(buf, '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
        if (pslash != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
            *pslash = '\0';           /* get rid of /{client|server|hotspot} */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
        dll_path = malloc(strlen(buf) + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
        if (dll_path == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
            return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
        strcpy(dll_path, buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
        Arguments::set_dll_dir(dll_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
        if (pslash != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
            pslash = strrchr(buf, '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
            if (pslash != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
                *pslash = '\0';       /* get rid of /<arch> */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
                pslash = strrchr(buf, '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
                if (pslash != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
                    *pslash = '\0';   /* get rid of /lib */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
        home_path = malloc(strlen(buf) + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
        if (home_path == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
            return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
        strcpy(home_path, buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
        Arguments::set_java_home(home_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
        if (!set_boot_path('/', ':'))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
            return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
    /*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
     * Where to look for native libraries
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
     */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
      // Use dlinfo() to determine the correct java.library.path.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
      // If we're launched by the Java launcher, and the user
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
      // does not set java.library.path explicitly on the commandline,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
      // the Java launcher sets LD_LIBRARY_PATH for us and unsets
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
      // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64.  In this case
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
      // dlinfo returns LD_LIBRARY_PATH + crle settings (including
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
      // /usr/lib), which is exactly what we want.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
      // If the user does set java.library.path, it completely
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
      // overwrites this setting, and always has.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
      // If we're not launched by the Java launcher, we may
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
      // get here with any/all of the LD_LIBRARY_PATH[_32|64]
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
      // settings.  Again, dlinfo does exactly what we want.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
      Dl_serinfo     _info, *info = &_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
      Dl_serpath     *path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
      char*          library_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
      char           *common_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
      int            i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
      // determine search path count and required buffer size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
      if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
        vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
      // allocate new buffer and initialize
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
      info = (Dl_serinfo*)malloc(_info.dls_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
      if (info == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
        vm_exit_out_of_memory(_info.dls_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
                              "init_system_properties_values info");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
      info->dls_size = _info.dls_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
      info->dls_cnt = _info.dls_cnt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
      // obtain search path information
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
      if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
        free(info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
        vm_exit_during_initialization("dlinfo SERINFO request", dlerror());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
      path = &info->dls_serpath[0];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
      // Note: Due to a legacy implementation, most of the library path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
      // is set in the launcher.  This was to accomodate linking restrictions
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
      // on legacy Solaris implementations (which are no longer supported).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
      // Eventually, all the library path setting will be done here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
      // However, to prevent the proliferation of improperly built native
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
      // libraries, the new path component /usr/jdk/packages is added here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
      // Determine the actual CPU architecture.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
      char cpu_arch[12];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
      sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
      // If we are a 64-bit vm, perform the following translations:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
      //   sparc   -> sparcv9
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
      //   i386    -> amd64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
      if (strcmp(cpu_arch, "sparc") == 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
        strcat(cpu_arch, "v9");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
      else if (strcmp(cpu_arch, "i386") == 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
        strcpy(cpu_arch, "amd64");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
      // Construct the invariant part of ld_library_path. Note that the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
      // space for the colon and the trailing null are provided by the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
      // nulls included by the sizeof operator.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
      size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
      common_path = malloc(bufsize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
      if (common_path == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
        free(info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
        vm_exit_out_of_memory(bufsize,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
                              "init_system_properties_values common_path");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
      sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
      // struct size is more than sufficient for the path components obtained
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
      // through the dlinfo() call, so only add additional space for the path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
      // components explicitly added here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
      bufsize = info->dls_size + strlen(common_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
      library_path = malloc(bufsize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
      if (library_path == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
        free(info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
        free(common_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
        vm_exit_out_of_memory(bufsize,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
                              "init_system_properties_values library_path");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
      library_path[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
      // Construct the desired Java library path from the linker's library
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
      // search path.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
      // For compatibility, it is optimal that we insert the additional path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
      // components specific to the Java VM after those components specified
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
      // in LD_LIBRARY_PATH (if any) but before those added by the ld.so
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
      // infrastructure.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
      if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
        strcpy(library_path, common_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
        int inserted = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
        for (i = 0; i < info->dls_cnt; i++, path++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
          uint_t flags = path->dls_flags & LA_SER_MASK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
          if (((flags & LA_SER_LIBPATH) == 0) && !inserted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
            strcat(library_path, common_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
            strcat(library_path, os::path_separator());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
            inserted = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
          strcat(library_path, path->dls_name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
          strcat(library_path, os::path_separator());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
        // eliminate trailing path separator
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
        library_path[strlen(library_path)-1] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
      // happens before argument parsing - can't use a trace flag
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
      // tty->print_raw("init_system_properties_values: native lib path: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
      // tty->print_raw_cr(library_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
      // callee copies into its own buffer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
      Arguments::set_library_path(library_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
      free(common_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
      free(library_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
      free(info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
    /*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
     * Extensions directories.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
     *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
     * Note that the space for the colon and the trailing null are provided
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
     * by the nulls included by the sizeof operator (so actually one byte more
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
     * than necessary is allocated).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
     */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
        char *buf = (char *) malloc(strlen(Arguments::get_java_home()) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
            sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
            sizeof(EXTENSIONS_DIR));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
        sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
            Arguments::get_java_home());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
        Arguments::set_ext_dirs(buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
    /* Endorsed standards default directory. */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
        char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
        sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
        Arguments::set_endorsed_dirs(buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
#undef malloc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
#undef free
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
#undef getenv
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
#undef EXTENSIONS_DIR
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
#undef ENDORSED_DIR
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
#undef COMMON_DIR
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
void os::breakpoint() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
  BREAKPOINT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
bool os::obsolete_option(const JavaVMOption *option)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
  if (!strncmp(option->optionString, "-Xt", 3)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
  } else if (!strncmp(option->optionString, "-Xtm", 4)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
  } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
  } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
bool os::Solaris::valid_stack_address(Thread* thread, address sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
  address  stackStart  = (address)thread->stack_base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
  address  stackEnd    = (address)(stackStart - (address)thread->stack_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
  if (sp < stackStart && sp >= stackEnd ) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
extern "C" void breakpoint() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
  // use debugger to set breakpoint here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
// Returns an estimate of the current stack pointer. Result must be guaranteed to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
// point into the calling threads stack, and be no lower than the current stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
// pointer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
address os::current_stack_pointer() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
  volatile int dummy;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
  address sp = (address)&dummy + 8;     // %%%% need to confirm if this is right
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  return sp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
static thread_t main_thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
// Thread start routine for all new Java threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
extern "C" void* java_start(void* thread_addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
  // Try to randomize the cache line index of hot stack frames.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
  // This helps when threads of the same stack traces evict each other's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
  // cache lines. The threads can be either from the same JVM instance, or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
  // from different JVM instances. The benefit is especially true for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
  // processors with hyperthreading technology.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
  static int counter = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
  int pid = os::current_process_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
  alloca(((pid ^ counter++) & 7) * 128);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
  int prio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
  Thread* thread = (Thread*)thread_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
  OSThread* osthr = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
  osthr->set_lwp_id( _lwp_self() );  // Store lwp in case we are bound
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
  thread->_schedctl = (void *) schedctl_init () ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
  if (UseNUMA) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
    int lgrp_id = os::numa_get_group_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
    if (lgrp_id != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
      thread->set_lgrp_id(lgrp_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
  // If the creator called set priority before we started,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
  // we need to call set priority now that we have an lwp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
  // Get the priority from libthread and set the priority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
  // for the new Solaris lwp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
  if ( osthr->thread_id() != -1 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
    if ( UseThreadPriorities ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
      thr_getprio(osthr->thread_id(), &prio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
      if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
        tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT ", setting priority: %d\n",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
                      osthr->thread_id(), osthr->lwp_id(), prio );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
      os::set_native_priority(thread, prio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
  } else if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
    warning("Can't set priority in _start routine, thread id hasn't been set\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
  assert(osthr->get_state() == RUNNABLE, "invalid os thread state");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
  // initialize signal mask for this thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
  os::Solaris::hotspot_sigmask(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
  thread->run();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
  // One less thread is executing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
  // When the VMThread gets here, the main thread may have already exited
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
  // which frees the CodeHeap containing the Atomic::dec code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
  if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
    Atomic::dec(&os::Solaris::_os_thread_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
  if (UseDetachedThreads) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
    thr_exit(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
static OSThread* create_os_thread(Thread* thread, thread_t thread_id) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
  // Allocate the OSThread object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
  OSThread* osthread = new OSThread(NULL, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
  if (osthread == NULL) return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
  // Store info on the Solaris thread into the OSThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
  osthread->set_thread_id(thread_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
  osthread->set_lwp_id(_lwp_self());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
  thread->_schedctl = (void *) schedctl_init () ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
  if (UseNUMA) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
    int lgrp_id = os::numa_get_group_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
    if (lgrp_id != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
      thread->set_lgrp_id(lgrp_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
  if ( ThreadPriorityVerbose ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
    tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
                  osthread->thread_id(), osthread->lwp_id() );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
  // Initial thread state is INITIALIZED, not SUSPENDED
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
  osthread->set_state(INITIALIZED);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
  return osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
void os::Solaris::hotspot_sigmask(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
  //Save caller's signal mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
  sigset_t sigmask;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
  thr_sigsetmask(SIG_SETMASK, NULL, &sigmask);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
  OSThread *osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
  osthread->set_caller_sigmask(sigmask);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
  thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
  if (!ReduceSignalUsage) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
    if (thread->is_VM_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
      // Only the VM thread handles BREAK_SIGNAL ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
      thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
      // ... all other threads block BREAK_SIGNAL
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
      assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
      thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
bool os::create_attached_thread(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
  thread->verify_not_published();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
  OSThread* osthread = create_os_thread(thread, thr_self());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
  if (osthread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
     return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
  // Initial thread state is RUNNABLE
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
  osthread->set_state(RUNNABLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
  thread->set_osthread(osthread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
  // initialize signal mask for this thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
  // and save the caller's signal mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  os::Solaris::hotspot_sigmask(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
bool os::create_main_thread(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
  thread->verify_not_published();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
  if (_starting_thread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
    _starting_thread = create_os_thread(thread, main_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
     if (_starting_thread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
        return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
  // The primodial thread is runnable from the start
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
  _starting_thread->set_state(RUNNABLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  thread->set_osthread(_starting_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
  // initialize signal mask for this thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
  // and save the caller's signal mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
  os::Solaris::hotspot_sigmask(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
// _T2_libthread is true if we believe we are running with the newer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
// SunSoft lwp/libthread.so (2.8 patch, 2.9 default)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
bool os::Solaris::_T2_libthread = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  // Allocate the OSThread object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
  OSThread* osthread = new OSThread(NULL, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
  if (osthread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
  if ( ThreadPriorityVerbose ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
    char *thrtyp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
    switch ( thr_type ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
      case vm_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
        thrtyp = (char *)"vm";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
      case cgc_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
        thrtyp = (char *)"cgc";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
      case pgc_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
        thrtyp = (char *)"pgc";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
      case java_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
        thrtyp = (char *)"java";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
      case compiler_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
        thrtyp = (char *)"compiler";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
      case watcher_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
        thrtyp = (char *)"watcher";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
      default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
        thrtyp = (char *)"unknown";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
    tty->print_cr("In create_thread, creating a %s thread\n", thrtyp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
  // Calculate stack size if it's not specified by caller.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
  if (stack_size == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
    // The default stack size 1M (2M for LP64).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
    stack_size = (BytesPerWord >> 2) * K * K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
    switch (thr_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
    case os::java_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
      // Java threads use ThreadStackSize which default value can be changed with the flag -Xss
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
      if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
    case os::compiler_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
      if (CompilerThreadStackSize > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
        stack_size = (size_t)(CompilerThreadStackSize * K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
      } // else fall through:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
        // use VMThreadStackSize if CompilerThreadStackSize is not defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
    case os::vm_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
    case os::pgc_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
    case os::cgc_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
    case os::watcher_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
      if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
  stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
  // Initial state is ALLOCATED but not INITIALIZED
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
  osthread->set_state(ALLOCATED);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
  if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
    // We got lots of threads. Check if we still have some address space left.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
    // Need to be at least 5Mb of unreserved address space. We do check by
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
    // trying to reserve some.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
    const size_t VirtualMemoryBangSize = 20*K*K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
    char* mem = os::reserve_memory(VirtualMemoryBangSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
    if (mem == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
      delete osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
      // Release the memory again
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
      os::release_memory(mem, VirtualMemoryBangSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
  // Setup osthread because the child thread may need it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
  thread->set_osthread(osthread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
  // Create the Solaris thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
  // explicit THR_BOUND for T2_libthread case in case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
  // that assumption is not accurate, but our alternate signal stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1264
  // handling is based on it which must have bound threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
  thread_t tid = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1266
  long     flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
                   | ((UseBoundThreads || os::Solaris::T2_libthread() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
                       (thr_type == vm_thread) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
                       (thr_type == cgc_thread) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
                       (thr_type == pgc_thread) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
                       (thr_type == compiler_thread && BackgroundCompilation)) ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
                      THR_BOUND : 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
  int      status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
  // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
  // On multiprocessors systems, libthread sometimes under-provisions our
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
  // process with LWPs.  On a 30-way systems, for instance, we could have
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
  // 50 user-level threads in ready state and only 2 or 3 LWPs assigned
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
  // to our process.  This can result in under utilization of PEs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
  // I suspect the problem is related to libthread's LWP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
  // pool management and to the kernel's SIGBLOCKING "last LWP parked"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
  // upcall policy.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
  // The following code is palliative -- it attempts to ensure that our
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
  // process has sufficient LWPs to take advantage of multiple PEs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
  // Proper long-term cures include using user-level threads bound to LWPs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
  // (THR_BOUND) or using LWP-based synchronization.  Note that there is a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
  // slight timing window with respect to sampling _os_thread_count, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
  // the race is benign.  Also, we should periodically recompute
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
  // _processors_online as the min of SC_NPROCESSORS_ONLN and the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
  // the number of PEs in our partition.  You might be tempted to use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
  // THR_NEW_LWP here, but I'd recommend against it as that could
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
  // result in undesirable growth of the libthread's LWP pool.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
  // The fix below isn't sufficient; for instance, it doesn't take into count
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
  // LWPs parked on IO.  It does, however, help certain CPU-bound benchmarks.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
  // Some pathologies this scheme doesn't handle:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
  // *  Threads can block, releasing the LWPs.  The LWPs can age out.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
  //    When a large number of threads become ready again there aren't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
  //    enough LWPs available to service them.  This can occur when the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
  //    number of ready threads oscillates.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
  // *  LWPs/Threads park on IO, thus taking the LWP out of circulation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
  // Finally, we should call thr_setconcurrency() periodically to refresh
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
  // the LWP pool and thwart the LWP age-out mechanism.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
  // The "+3" term provides a little slop -- we want to slightly overprovision.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
  if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
    if (!(flags & THR_BOUND)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
      thr_setconcurrency (os::Solaris::_os_thread_count);       // avoid starvation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
  // Although this doesn't hurt, we should warn of undefined behavior
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
  // when using unbound T1 threads with schedctl().  This should never
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
  // happen, as the compiler and VM threads are always created bound
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
  DEBUG_ONLY(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
      if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
          (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1320
          ((thr_type == vm_thread) || (thr_type == cgc_thread) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
           (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
         warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
  // Mark that we don't have an lwp or thread id yet.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
  // In case we attempt to set the priority before the thread starts.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
  osthread->set_lwp_id(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
  osthread->set_thread_id(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
  status = thr_create(NULL, stack_size, java_start, thread, flags, &tid);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
  if (status != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
    if (PrintMiscellaneous && (Verbose || WizardMode)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
      perror("os::create_thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
    thread->set_osthread(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
    // Need to clean up stuff we've allocated so far
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
    delete osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
  Atomic::inc(&os::Solaris::_os_thread_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
  // Store info on the Solaris thread into the OSThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
  osthread->set_thread_id(tid);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
  // Remember that we created this thread so we can set priority on it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
  osthread->set_vm_created();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
  // Set the default thread priority otherwise use NormalPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
  if ( UseThreadPriorities ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
     thr_setprio(tid, (DefaultThreadPriority == -1) ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
                        java_to_os_priority[NormPriority] :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
                        DefaultThreadPriority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  // Initial thread state is INITIALIZED, not SUSPENDED
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
  osthread->set_state(INITIALIZED);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
  // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
/* defined for >= Solaris 10. This allows builds on earlier versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
 *  of Solaris to take advantage of the newly reserved Solaris JVM signals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
 *  With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
 *  and -XX:+UseAltSigs does nothing since these should have no conflict
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
#if !defined(SIGJVM1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
#define SIGJVM1 39
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
#define SIGJVM2 40
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
debug_only(static bool signal_sets_initialized = false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
int os::Solaris::_SIGasync = ASYNC_SIGNAL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
bool os::Solaris::is_sig_ignored(int sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
      struct sigaction oact;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
      sigaction(sig, (struct sigaction*)NULL, &oact);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
      void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*,  oact.sa_sigaction)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
                                     : CAST_FROM_FN_PTR(void*,  oact.sa_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
      if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
           return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
      else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
           return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
// Note: SIGRTMIN is a macro that calls sysconf() so it will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
// dynamically detect SIGRTMIN value for the system at runtime, not buildtime
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
static bool isJVM1available() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
  return SIGJVM1 < SIGRTMIN;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
void os::Solaris::signal_sets_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
  // Should also have an assertion stating we are still single-threaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
  assert(!signal_sets_initialized, "Already initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
  // Fill in signals that are necessarily unblocked for all threads in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
  // the VM. Currently, we unblock the following signals:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
  // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
  //                         by -Xrs (=ReduceSignalUsage));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
  // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
  // other threads. The "ReduceSignalUsage" boolean tells us not to alter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
  // the dispositions or masks wrt these signals.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
  // Programs embedding the VM that want to use the above signals for their
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
  // own purposes must, at this time, use the "-Xrs" option to prevent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
  // interference with shutdown hooks and BREAK_SIGNAL thread dumping.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
  // (See bug 4345157, and other related bugs).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
  // In reality, though, unblocking these signals is really a nop, since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
  // these signals are not blocked by default.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
  sigemptyset(&unblocked_sigs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
  sigemptyset(&allowdebug_blocked_sigs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
  sigaddset(&unblocked_sigs, SIGILL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
  sigaddset(&unblocked_sigs, SIGSEGV);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
  sigaddset(&unblocked_sigs, SIGBUS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
  sigaddset(&unblocked_sigs, SIGFPE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
  if (isJVM1available) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
    os::Solaris::set_SIGinterrupt(SIGJVM1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
    os::Solaris::set_SIGasync(SIGJVM2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
  } else if (UseAltSigs) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
    os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
    os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
    os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
    os::Solaris::set_SIGasync(ASYNC_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
  sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
  sigaddset(&unblocked_sigs, os::Solaris::SIGasync());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
  if (!ReduceSignalUsage) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
   if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
      sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
      sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
   if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
      sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
      sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
   if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
      sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
      sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
  // Fill in signals that are blocked by all but the VM thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
  sigemptyset(&vm_sigs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
  if (!ReduceSignalUsage)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
    sigaddset(&vm_sigs, BREAK_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
  debug_only(signal_sets_initialized = true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
  // For diagnostics only used in run_periodic_checks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
  sigemptyset(&check_signal_done);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
// These are signals that are unblocked while a thread is running Java.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
// (For some reason, they get blocked by default.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
sigset_t* os::Solaris::unblocked_signals() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
  assert(signal_sets_initialized, "Not initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
  return &unblocked_sigs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
// These are the signals that are blocked while a (non-VM) thread is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
// running Java. Only the VM thread handles these signals.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
sigset_t* os::Solaris::vm_signals() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
  assert(signal_sets_initialized, "Not initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
  return &vm_sigs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
// These are signals that are blocked during cond_wait to allow debugger in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
sigset_t* os::Solaris::allowdebug_blocked_signals() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
  assert(signal_sets_initialized, "Not initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
  return &allowdebug_blocked_sigs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
7692
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1479
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1480
void _handle_uncaught_cxx_exception() {
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1481
  VMError err("An uncaught C++ exception");
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1482
  err.report_and_die();
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1483
}
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1484
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1485
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
// First crack at OS-specific initialization, from inside the new thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
void os::initialize_thread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
  int r = thr_main() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
  guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
  if (r) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
    JavaThread* jt = (JavaThread *)Thread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
    assert(jt != NULL,"Sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
    size_t stack_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
    address base = jt->stack_base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
    if (Arguments::created_by_java_launcher()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
      // Use 2MB to allow for Solaris 7 64 bit mode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
      stack_size = JavaThread::stack_size_at_create() == 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
        ? 2048*K : JavaThread::stack_size_at_create();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
      // There are rare cases when we may have already used more than
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
      // the basic stack size allotment before this method is invoked.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
      // Attempt to allow for a normally sized java_stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
      size_t current_stack_offset = (size_t)(base - (address)&stack_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
      stack_size += ReservedSpace::page_align_size_down(current_stack_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
      // 6269555: If we were not created by a Java launcher, i.e. if we are
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
      // running embedded in a native application, treat the primordial thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
      // as much like a native attached thread as possible.  This means using
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
      // the current stack size from thr_stksegment(), unless it is too large
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1510
      // to reliably setup guard pages.  A reasonable max size is 8MB.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1511
      size_t current_size = current_stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
      // This should never happen, but just in case....
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
      if (current_size == 0) current_size = 2 * K * K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
      stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
    address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
    stack_size = (size_t)(base - bottom);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
    assert(stack_size > 0, "Stack size calculation problem");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
    if (stack_size > jt->stack_size()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
      NOT_PRODUCT(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
        struct rlimit limits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
        getrlimit(RLIMIT_STACK, &limits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
        size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
        assert(size >= jt->stack_size(), "Stack size problem in main thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
      )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
      tty->print_cr(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
        "Stack size of %d Kb exceeds current limit of %d Kb.\n"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
        "(Stack sizes are rounded up to a multiple of the system page size.)\n"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
        "See limit(1) to increase the stack size limit.",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
        stack_size / K, jt->stack_size() / K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
      vm_exit(1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
    assert(jt->stack_size() >= stack_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
          "Attempt to map more stack than was allocated");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
    jt->set_stack_size(stack_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
   // 5/22/01: Right now alternate signal stacks do not handle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
   // throwing stack overflow exceptions, see bug 4463178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
   // Until a fix is found for this, T2 will NOT imply alternate signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
   // stacks.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
   // If using T2 libthread threads, install an alternate signal stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
   // Because alternate stacks associate with LWPs on Solaris,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
   // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
   // we prefer to explicitly stack bang.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
   // If not using T2 libthread, but using UseBoundThreads any threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
   // (primordial thread, jni_attachCurrentThread) we do not create,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
   // probably are not bound, therefore they can not have an alternate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
   // signal stack. Since our stack banging code is generated and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
   // is shared across threads, all threads must be bound to allow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
   // using alternate signal stacks.  The alternative is to interpose
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
   // on _lwp_create to associate an alt sig stack with each LWP,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
   // and this could be a problem when the JVM is embedded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
   // We would prefer to use alternate signal stacks with T2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
   // Since there is currently no accurate way to detect T2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
   // we do not. Assuming T2 when running T1 causes sig 11s or assertions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
   // on installing alternate signal stacks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
   // 05/09/03: removed alternate signal stack support for Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
   // The alternate signal stack mechanism is no longer needed to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
   // handle stack overflow. This is now handled by allocating
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
   // guard pages (red zone) and stackbanging.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
   // Initially the alternate signal stack mechanism was removed because
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
   // it did not work with T1 llibthread. Alternate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
   // signal stacks MUST have all threads bound to lwps. Applications
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
   // can create their own threads and attach them without their being
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
   // bound under T1. This is frequently the case for the primordial thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
   // If we were ever to reenable this mechanism we would need to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
   // use the dynamic check for T2 libthread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
  os::Solaris::init_thread_fpu_state();
7692
02c573fae027 6961186: Better VM handling of unexpected exceptions from application native code
zgu
parents: 7448
diff changeset
  1575
  std::set_terminate(_handle_uncaught_cxx_exception);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
// Free Solaris resources related to the OSThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
void os::free_thread(OSThread* osthread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
  assert(osthread != NULL, "os::free_thread but osthread not set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
  // We are told to free resources of the argument thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
  // but we can only really operate on the current thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
  // The main thread must take the VMThread down synchronously
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
  // before the main thread exits and frees up CodeHeap
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
  guarantee((Thread::current()->osthread() == osthread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
     || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
  if (Thread::current()->osthread() == osthread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
    // Restore caller's signal mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
    sigset_t sigmask = osthread->caller_sigmask();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
    thr_sigsetmask(SIG_SETMASK, &sigmask, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
  delete osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
void os::pd_start_thread(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
  int status = thr_continue(thread->osthread()->thread_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
  assert_status(status == 0, status, "thr_continue failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
intx os::current_thread_id() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
  return (intx)thr_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
static pid_t _initial_pid = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
int os::current_process_id() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
  return (int)(_initial_pid ? _initial_pid : getpid());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
int os::allocate_thread_local_storage() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
  // %%%       in Win32 this allocates a memory segment pointed to by a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
  //           register.  Dan Stein can implement a similar feature in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
  //           Solaris.  Alternatively, the VM can do the same thing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
  //           explicitly: malloc some storage and keep the pointer in a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
  //           register (which is part of the thread's context) (or keep it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
  //           in TLS).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
  // %%%       In current versions of Solaris, thr_self and TSD can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
  //           be accessed via short sequences of displaced indirections.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
  //           The value of thr_self is available as %g7(36).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
  //           The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
  //           assuming that the current thread already has a value bound to k.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
  //           It may be worth experimenting with such access patterns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
  //           and later having the parameters formally exported from a Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
  //           interface.  I think, however, that it will be faster to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
  //           maintain the invariant that %g2 always contains the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
  //           JavaThread in Java code, and have stubs simply
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
  //           treat %g2 as a caller-save register, preserving it in a %lN.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
  thread_key_t tk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
  if (thr_keycreate( &tk, NULL ) )
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  1635
    fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed "
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  1636
                  "(%s)", strerror(errno)));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
  return int(tk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
void os::free_thread_local_storage(int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  // %%% don't think we need anything here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
  // if ( pthread_key_delete((pthread_key_t) tk) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
  //   fatal("os::free_thread_local_storage: pthread_key_delete failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
#define SMALLINT 32   // libthread allocate for tsd_common is a version specific
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
                      // small number - point is NO swap space available
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
void os::thread_local_storage_at_put(int index, void* value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  // %%% this is used only in threadLocalStorage.cpp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
  if (thr_setspecific((thread_key_t)index, value)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
    if (errno == ENOMEM) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
       vm_exit_out_of_memory(SMALLINT, "thr_setspecific: out of swap space");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
    } else {
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  1654
      fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed "
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  1655
                    "(%s)", strerror(errno)));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
      ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
// This function could be called before TLS is initialized, for example, when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
// VM receives an async signal or when VM causes a fatal error during
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
// initialization. Return NULL if thr_getspecific() fails.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
void* os::thread_local_storage_at(int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
  // %%% this is used only in threadLocalStorage.cpp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
  void* r = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
  return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
const int NANOSECS_PER_MILLISECS = 1000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
// gethrtime can move backwards if read from one cpu and then a different cpu
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
// getTimeNanos is guaranteed to not move backward on Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
// local spinloop created as faster for a CAS on an int than
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
// a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
// supported on sparc v8 or pre supports_cx8 intel boxes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
// oldgetTimeNanos for systems which do not support CAS on 64bit jlong
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
// i.e. sparc v8 and pre supports_cx8 (i486) intel boxes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
inline hrtime_t oldgetTimeNanos() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
  int gotlock = LOCK_INVALID;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
  hrtime_t newtime = gethrtime();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
  for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
// grab lock for max_hrtime
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
    int curlock = max_hrtime_lock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
    if (curlock & LOCK_BUSY)  continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
    if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
    if (newtime > max_hrtime) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
      max_hrtime = newtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
      newtime = max_hrtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
    // release lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
    max_hrtime_lock = LOCK_FREE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
    return newtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
// gethrtime can move backwards if read from one cpu and then a different cpu
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
// getTimeNanos is guaranteed to not move backward on Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
inline hrtime_t getTimeNanos() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
  if (VM_Version::supports_cx8()) {
1686
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1703
    const hrtime_t now = gethrtime();
3594
0ce9158bc84c 6863420: os::javaTimeNanos() go backward on Solaris x86
kvn
parents: 2358
diff changeset
  1704
    // Use atomic long load since 32-bit x86 uses 2 registers to keep long.
0ce9158bc84c 6863420: os::javaTimeNanos() go backward on Solaris x86
kvn
parents: 2358
diff changeset
  1705
    const hrtime_t prev = Atomic::load((volatile jlong*)&max_hrtime);
1686
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1706
    if (now <= prev)  return prev;   // same or retrograde time;
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1707
    const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev);
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1708
    assert(obsv >= prev, "invariant");   // Monotonicity
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1709
    // If the CAS succeeded then we're done and return "now".
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1710
    // If the CAS failed and the observed value "obs" is >= now then
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1711
    // we should return "obs".  If the CAS failed and now > obs > prv then
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1712
    // some other thread raced this thread and installed a new value, in which case
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1713
    // we could either (a) retry the entire operation, (b) retry trying to install now
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1714
    // or (c) just return obs.  We use (c).   No loop is required although in some cases
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1715
    // we might discard a higher "now" value in deference to a slightly lower but freshly
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1716
    // installed obs value.   That's entirely benign -- it admits no new orderings compared
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1717
    // to (a) or (b) -- and greatly reduces coherence traffic.
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1718
    // We might also condition (c) on the magnitude of the delta between obs and now.
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1719
    // Avoiding excessive CAS operations to hot RW locations is critical.
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1720
    // See http://blogs.sun.com/dave/entry/cas_and_cache_trivia_invalidate
27651ead9d6e 6784100: getTimeNanos - CAS reduction
xlu
parents: 1664
diff changeset
  1721
    return (prev == obsv) ? now : obsv ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
    return oldgetTimeNanos();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
// Time since start-up in seconds to a fine granularity.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
// Used by VMSelfDestructTimer and the MemProfiler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
double os::elapsedTime() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
  return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
jlong os::elapsed_counter() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
  return (jlong)(getTimeNanos() - first_hrtime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
jlong os::elapsed_frequency() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
   return hrtime_hz;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
// Return the real, user, and system times in seconds from an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
// arbitrary fixed point in the past.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
bool os::getTimesSecs(double* process_real_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
                  double* process_user_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
                  double* process_system_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
  struct tms ticks;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
  clock_t real_ticks = times(&ticks);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
  if (real_ticks == (clock_t) (-1)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
    double ticks_per_second = (double) clock_tics_per_sec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
    *process_user_time = ((double) ticks.tms_utime) / ticks_per_second;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
    *process_system_time = ((double) ticks.tms_stime) / ticks_per_second;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
    // For consistency return the real time from getTimeNanos()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
    // converted to seconds.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
    *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1763
bool os::supports_vtime() { return true; }
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1764
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1765
bool os::enable_vtime() {
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  1766
  int fd = ::open("/proc/self/ctl", O_WRONLY);
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1767
  if (fd == -1)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1768
    return false;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1769
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1770
  long cmd[] = { PCSET, PR_MSACCT };
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  1771
  int res = ::write(fd, cmd, sizeof(long) * 2);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  1772
  ::close(fd);
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1773
  if (res != sizeof(long) * 2)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1774
    return false;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1775
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1776
  return true;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1777
}
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1778
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1779
bool os::vtime_enabled() {
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  1780
  int fd = ::open("/proc/self/status", O_RDONLY);
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1781
  if (fd == -1)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1782
    return false;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1783
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1784
  pstatus_t status;
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  1785
  int res = os::read(fd, (void*) &status, sizeof(pstatus_t));
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  1786
  ::close(fd);
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1787
  if (res != sizeof(pstatus_t))
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1788
    return false;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1789
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1790
  return status.pr_flags & PR_MSACCT;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1791
}
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1792
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1793
double os::elapsedVTime() {
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1794
  return (double)gethrvtime() / (double)hrtime_hz;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1795
}
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  1796
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
// Used internally for comparisons only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
// getTimeMillis guaranteed to not move backwards on Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
jlong getTimeMillis() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
  jlong nanotime = getTimeNanos();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
  return (jlong)(nanotime / NANOSECS_PER_MILLISECS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
234
4da9c1bbc810 6667833: Remove CacheTimeMillis
sbohne
parents: 233
diff changeset
  1804
// Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis
4da9c1bbc810 6667833: Remove CacheTimeMillis
sbohne
parents: 233
diff changeset
  1805
jlong os::javaTimeMillis() {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
  timeval t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
  if (gettimeofday( &t, NULL) == -1)
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  1808
    fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno)));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
  return jlong(t.tv_sec) * 1000  +  jlong(t.tv_usec) / 1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
jlong os::javaTimeNanos() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
  return (jlong)getTimeNanos();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
  info_ptr->max_value = ALL_64_BITS;      // gethrtime() uses all 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
  info_ptr->may_skip_backward = false;    // not subject to resetting or drifting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
  info_ptr->may_skip_forward = false;     // not subject to resetting or drifting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
  info_ptr->kind = JVMTI_TIMER_ELAPSED;   // elapsed not CPU time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
char * os::local_time_string(char *buf, size_t buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
  struct tm t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
  time_t long_time;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
  time(&long_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
  localtime_r(&long_time, &t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
  jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
               t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
               t.tm_hour, t.tm_min, t.tm_sec);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
// Note: os::shutdown() might be called very early during initialization, or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
// called from signal handler. Before adding something to os::shutdown(), make
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
// sure it is async-safe and can handle partially initialized VM.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
void os::shutdown() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
  // allow PerfMemory to attempt cleanup of any persistent resources
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
  perfMemory_exit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
  // needs to remove object in file system
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
  AttachListener::abort();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
  // flush buffered output, finish log files
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
  ostream_abort();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
  // Check for abort hook
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
  abort_hook_t abort_hook = Arguments::abort_hook();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
  if (abort_hook != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
    abort_hook();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
// Note: os::abort() might be called very early during initialization, or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
// called from signal handler. Before adding something to os::abort(), make
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
// sure it is async-safe and can handle partially initialized VM.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
void os::abort(bool dump_core) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
  os::shutdown();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
  if (dump_core) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
    fdStream out(defaultStream::output_fd());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
    out.print_raw("Current thread is ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
    char buf[16];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
    jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
    out.print_raw_cr(buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
    out.print_raw_cr("Dumping core ...");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
    ::abort(); // dump core (for debugging)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
  ::exit(1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
// Die immediately, no exit hook, no abort hook, no cleanup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
void os::die() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
  _exit(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
// unused
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
void os::set_error_file(const char *logfile) {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
// DLL functions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
const char* os::dll_file_extension() { return ".so"; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
7901
ea3d83447861 7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
parents: 7726
diff changeset
  1887
// 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: 7726
diff changeset
  1888
// 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: 7726
diff changeset
  1889
const char* os::get_temp_directory() { return "/tmp"; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
2358
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1891
static bool file_exists(const char* filename) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1892
  struct stat statbuf;
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1893
  if (filename == NULL || strlen(filename) == 0) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1894
    return false;
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1895
  }
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1896
  return os::stat(filename, &statbuf) == 0;
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1897
}
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1898
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1899
void os::dll_build_name(char* buffer, size_t buflen,
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1900
                        const char* pname, const char* fname) {
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1901
  const size_t pnamelen = pname ? strlen(pname) : 0;
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1902
2358
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1903
  // Quietly truncate on buffer overflow.  Should be an error.
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1904
  if (pnamelen + strlen(fname) + 10 > (size_t) buflen) {
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  1905
    *buffer = '\0';
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  1906
    return;
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1907
  }
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1908
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1909
  if (pnamelen == 0) {
2358
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1910
    snprintf(buffer, buflen, "lib%s.so", fname);
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1911
  } else if (strchr(pname, *os::path_separator()) != NULL) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1912
    int n;
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1913
    char** pelements = split_path(pname, &n);
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1914
    for (int i = 0 ; i < n ; i++) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1915
      // really shouldn't be NULL but what the heck, check can't hurt
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1916
      if (pelements[i] == NULL || strlen(pelements[i]) == 0) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1917
        continue; // skip the empty path values
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1918
      }
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1919
      snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname);
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1920
      if (file_exists(buffer)) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1921
        break;
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1922
      }
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1923
    }
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1924
    // release the storage
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1925
    for (int i = 0 ; i < n ; i++) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1926
      if (pelements[i] != NULL) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1927
        FREE_C_HEAP_ARRAY(char, pelements[i]);
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1928
      }
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1929
    }
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1930
    if (pelements != NULL) {
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1931
      FREE_C_HEAP_ARRAY(char*, pelements);
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1932
    }
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1933
  } else {
2358
7c8346929fc6 6819213: revive sun.boot.library.path
phh
parents: 2268
diff changeset
  1934
    snprintf(buffer, buflen, "%s/lib%s.so", pname, fname);
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1935
  }
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1936
}
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  1937
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
const char* os::get_current_directory(char *buf, int buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
  return getcwd(buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
// check if addr is inside libjvm[_g].so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
bool os::address_is_in_vm(address addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
  static address libjvm_base_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
  Dl_info dlinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
  if (libjvm_base_addr == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
    dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
    libjvm_base_addr = (address)dlinfo.dli_fbase;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
    assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
  if (dladdr((void *)addr, &dlinfo)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
    if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
static dladdr1_func_type dladdr1_func = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
bool os::dll_address_to_function_name(address addr, char *buf,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
                                      int buflen, int * offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
  Dl_info dlinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
  // dladdr1_func was initialized in os::init()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
  if (dladdr1_func){
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
      // yes, we have dladdr1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
      // Support for dladdr1 is checked at runtime; it may be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
      // available even if the vm is built on a machine that does
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
      // not have dladdr1 support.  Make sure there is a value for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
      // RTLD_DL_SYMENT.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
      #ifndef RTLD_DL_SYMENT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
      #define RTLD_DL_SYMENT 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
      #endif
8329
96eacc5e391f 7018101: os::dll_address_to_function_name returning wrong answers in 64 bit
never
parents: 7901
diff changeset
  1978
#ifdef _LP64
96eacc5e391f 7018101: os::dll_address_to_function_name returning wrong answers in 64 bit
never
parents: 7901
diff changeset
  1979
      Elf64_Sym * info;
96eacc5e391f 7018101: os::dll_address_to_function_name returning wrong answers in 64 bit
never
parents: 7901
diff changeset
  1980
#else
96eacc5e391f 7018101: os::dll_address_to_function_name returning wrong answers in 64 bit
never
parents: 7901
diff changeset
  1981
      Elf32_Sym * info;
96eacc5e391f 7018101: os::dll_address_to_function_name returning wrong answers in 64 bit
never
parents: 7901
diff changeset
  1982
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
      if (dladdr1_func((void *)addr, &dlinfo, (void **)&info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
                       RTLD_DL_SYMENT)) {
7447
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1985
        if ((char *)dlinfo.dli_saddr + info->st_size > (char *)addr) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1986
          if (buf != NULL) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1987
            if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen))
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1988
              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
  1989
            }
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1990
            if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1991
            return true;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1992
        }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
      }
7447
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1994
      if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1995
        if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1996
          dlinfo.dli_fname, buf, buflen, offset) == Decoder::no_error) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1997
          return true;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1998
        }
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  1999
      }
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2000
      if (buf != NULL) buf[0] = '\0';
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2001
      if (offset != NULL) *offset  = -1;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2002
      return false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
      // no, only dladdr is available
7447
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2005
      if (dladdr((void *)addr, &dlinfo)) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2006
        if (buf != NULL) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2007
          if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen))
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2008
            jio_snprintf(buf, buflen, dlinfo.dli_sname);
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2009
        }
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2010
        if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2011
        return true;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2012
      } else if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) {
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2013
        if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2014
          dlinfo.dli_fname, buf, buflen, offset) == Decoder::no_error) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
          return true;
7447
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2016
        }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
      }
7447
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2018
      if (buf != NULL) buf[0] = '\0';
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2019
      if (offset != NULL) *offset  = -1;
32c42d627f41 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents: 7397
diff changeset
  2020
      return false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
bool os::dll_address_to_library_name(address addr, char* buf,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
                                     int buflen, int* offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
  Dl_info dlinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
  if (dladdr((void*)addr, &dlinfo)){
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
     if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
     if (offset) *offset = addr - (address)dlinfo.dli_fbase;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
     return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
     if (buf) buf[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
     if (offset) *offset = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
     return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
// Prints the names and full paths of all opened dynamic libraries
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
// for current process
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
void os::print_dll_info(outputStream * st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
    Dl_info dli;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
    void *handle;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
    Link_map *map;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
    Link_map *p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
    st->print_cr("Dynamic libraries:"); st->flush();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
    if (!dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
        st->print_cr("Error: Cannot print dynamic libraries.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
    handle = dlopen(dli.dli_fname, RTLD_LAZY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
    if (handle == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
        st->print_cr("Error: Cannot print dynamic libraries.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
    dlinfo(handle, RTLD_DI_LINKMAP, &map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
    if (map == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
        st->print_cr("Error: Cannot print dynamic libraries.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
    while (map->l_prev != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
        map = map->l_prev;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
    while (map != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
        st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
        map = map->l_next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
    dlclose(handle);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
  // Loads .dll/.so and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
  // in case of error it checks if .dll/.so was built for the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
  // same architecture as Hotspot is running on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
  void * result= ::dlopen(filename, RTLD_LAZY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
  if (result != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
    // Successful loading
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
    return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
  Elf32_Ehdr elf_head;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
  // Read system error message into ebuf
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
  // It may or may not be overwritten below
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
  ::strncpy(ebuf, ::dlerror(), ebuflen-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
  ebuf[ebuflen-1]='\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
  int diag_msg_max_length=ebuflen-strlen(ebuf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
  char* diag_msg_buf=ebuf+strlen(ebuf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
  if (diag_msg_max_length==0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
    // No more space in ebuf for additional diagnostics message
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
  int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
  if (file_descriptor < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
    // Can't open library, report dlerror() message
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
  bool failed_to_read_elf_head=
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
    (sizeof(elf_head)!=
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
        (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
  ::close(file_descriptor);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
  if (failed_to_read_elf_head) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
    // file i/o error - report dlerror() msg
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
  typedef struct {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
    Elf32_Half  code;         // Actual value as defined in elf.h
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
    Elf32_Half  compat_class; // Compatibility of archs at VM's sense
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
    char        elf_class;    // 32 or 64 bit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
    char        endianess;    // MSB or LSB
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
    char*       name;         // String representation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
  } arch_t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
  static const arch_t arch_array[]={
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
    {EM_386,         EM_386,     ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
    {EM_486,         EM_386,     ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
    {EM_IA_64,       EM_IA_64,   ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
    {EM_X86_64,      EM_X86_64,  ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
    {EM_SPARC,       EM_SPARC,   ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
    {EM_SPARC32PLUS, EM_SPARC,   ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
    {EM_SPARCV9,     EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
    {EM_PPC,         EM_PPC,     ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"},
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  2136
    {EM_PPC64,       EM_PPC64,   ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"},
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  2137
    {EM_ARM,         EM_ARM,     ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
  #if  (defined IA32)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
    static  Elf32_Half running_arch_code=EM_386;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
  #elif   (defined AMD64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
    static  Elf32_Half running_arch_code=EM_X86_64;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
  #elif  (defined IA64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
    static  Elf32_Half running_arch_code=EM_IA_64;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
  #elif  (defined __sparc) && (defined _LP64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
    static  Elf32_Half running_arch_code=EM_SPARCV9;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
  #elif  (defined __sparc) && (!defined _LP64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
    static  Elf32_Half running_arch_code=EM_SPARC;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
  #elif  (defined __powerpc64__)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
    static  Elf32_Half running_arch_code=EM_PPC64;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
  #elif  (defined __powerpc__)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
    static  Elf32_Half running_arch_code=EM_PPC;
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  2154
  #elif (defined ARM)
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  2155
    static  Elf32_Half running_arch_code=EM_ARM;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
  #else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
    #error Method os::dll_load requires that one of following is defined:\
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  2158
         IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
  #endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
  // Identify compatability class for VM's architecture and library's architecture
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
  // Obtain string descriptions for architectures
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2164
  arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
  int running_arch_index=-1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
  for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
    if (running_arch_code == arch_array[i].code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
      running_arch_index    = i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2170
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2171
    if (lib_arch.code == arch_array[i].code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2172
      lib_arch.compat_class = arch_array[i].compat_class;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
      lib_arch.name         = arch_array[i].name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
  assert(running_arch_index != -1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
    "Didn't find running architecture code (running_arch_code) in arch_array");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
  if (running_arch_index == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
    // Even though running architecture detection failed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
    // we may still continue with reporting dlerror() message
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
  if (lib_arch.endianess != arch_array[running_arch_index].endianess) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
    ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
  if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
    ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
  if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
    if ( lib_arch.name!=NULL ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
      ::snprintf(diag_msg_buf, diag_msg_max_length-1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
        " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
        lib_arch.name, arch_array[running_arch_index].name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
      ::snprintf(diag_msg_buf, diag_msg_max_length-1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
      " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
        lib_arch.code,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
        arch_array[running_arch_index].name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  2211
void* os::dll_lookup(void* handle, const char* name) {
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  2212
  return dlsym(handle, name);
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 823
diff changeset
  2213
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2215
int os::stat(const char *path, struct stat *sbuf) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2216
  char pathbuf[MAX_PATH];
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2217
  if (strlen(path) > MAX_PATH - 1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2218
    errno = ENAMETOOLONG;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2219
    return -1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2220
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2221
  os::native_path(strcpy(pathbuf, path));
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2222
  return ::stat(pathbuf, sbuf);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2223
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2224
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2225
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
  2226
  int fd = ::open(filename, O_RDONLY);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
  if (fd == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
     return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
  char buf[32];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
  int bytes;
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2233
  while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
    st->print_raw(buf, bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2237
  ::close(fd);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
void os::print_os_info(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
  st->print("OS:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
  if (!_print_ascii_file("/etc/release", st)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
    st->print("Solaris");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
  // kernel
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
  st->print("uname:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
  struct utsname name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
  uname(&name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
  st->print(name.sysname); st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
  st->print(name.release); st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
  st->print(name.version); st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
  st->print(name.machine);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
  // libthread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
  if (os::Solaris::T2_libthread()) st->print("  (T2 libthread)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
  else st->print("  (T1 libthread)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
  // rlimit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
  st->print("rlimit:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
  struct rlimit rlim;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
  st->print(" STACK ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
  getrlimit(RLIMIT_STACK, &rlim);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
  else st->print("%uk", rlim.rlim_cur >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
  st->print(", CORE ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
  getrlimit(RLIMIT_CORE, &rlim);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
  else st->print("%uk", rlim.rlim_cur >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
  st->print(", NOFILE ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
  getrlimit(RLIMIT_NOFILE, &rlim);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
  else st->print("%d", rlim.rlim_cur);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
  st->print(", AS ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
  getrlimit(RLIMIT_AS, &rlim);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
  else st->print("%uk", rlim.rlim_cur >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
  // load average
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
  st->print("load average:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
  double loadavg[3];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
  os::loadavg(loadavg, 3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
  st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
static bool check_addr0(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
  jboolean status = false;
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2300
  int fd = ::open("/proc/self/map",O_RDONLY);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
  if (fd >= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
    prmap_t p;
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2303
    while(::read(fd, &p, sizeof(p)) > 0) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
      if (p.pr_vaddr == 0x0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2305
        st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
        st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2307
        st->print("Access:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2308
        st->print("%s",(p.pr_mflags & MA_READ)  ? "r" : "-");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
        st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
        st->print("%s",(p.pr_mflags & MA_EXEC)  ? "x" : "-");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
        st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
        status = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
      }
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2314
      ::close(fd);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2315
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2316
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2317
  return status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2318
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2319
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
void os::print_memory_info(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
  st->print("Memory:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
  st->print(" %dk page", os::vm_page_size()>>10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
  st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
  st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
  (void) check_addr0(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2328
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
// Taken from /usr/include/sys/machsig.h  Supposed to be architecture specific
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2330
// but they're the same for all the solaris architectures that we support.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
                          "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
                          "ILL_COPROC", "ILL_BADSTK" };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
                          "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
                          "FPE_FLTINV", "FPE_FLTSUB" };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2343
void os::print_siginfo(outputStream* st, void* siginfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
  st->print("siginfo:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
  const int buflen = 100;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
  char buf[buflen];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
  siginfo_t *si = (siginfo_t*)siginfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2349
  st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2350
  char *err = strerror(si->si_errno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
  if (si->si_errno != 0 && err != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
    st->print("si_errno=%s", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
    st->print("si_errno=%d", si->si_errno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2355
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2356
  const int c = si->si_code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
  assert(c > 0, "unexpected si_code");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
  switch (si->si_signo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
  case SIGILL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
    st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
    st->print(", si_addr=" PTR_FORMAT, si->si_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
  case SIGFPE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
    st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2365
    st->print(", si_addr=" PTR_FORMAT, si->si_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
  case SIGSEGV:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2368
    st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
    st->print(", si_addr=" PTR_FORMAT, si->si_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
  case SIGBUS:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
    st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
    st->print(", si_addr=" PTR_FORMAT, si->si_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
  default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
    st->print(", si_code=%d", si->si_code);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
    // no si_addr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2378
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
  if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
      UseSharedSpaces) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
    FileMapInfo* mapinfo = FileMapInfo::current_info();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
    if (mapinfo->is_in_shared_space(si->si_addr)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
      st->print("\n\nError accessing class data sharing archive."   \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2385
                " Mapped file inaccessible during execution, "      \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
                " possible disk/network problem.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2387
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
// Moved from whole group, because we need them here for diagnostic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
// prints.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
#define OLDMAXSIGNUM 32
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
static int Maxsignum = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
static int *ourSigFlags = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2397
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
extern "C" void sigINTRHandler(int, siginfo_t*, void*);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
int os::Solaris::get_our_sigflags(int sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
  assert(ourSigFlags!=NULL, "signal data structure not initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2402
  assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
  return ourSigFlags[sig];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2404
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
void os::Solaris::set_our_sigflags(int sig, int flags) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
  assert(ourSigFlags!=NULL, "signal data structure not initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
  assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
  ourSigFlags[sig] = flags;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
static const char* get_signal_handler_name(address handler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2414
                                           char* buf, int buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2415
  int offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2416
  bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2417
  if (found) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2418
    // skip directory names
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2419
    const char *p1, *p2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2420
    p1 = buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2421
    size_t len = strlen(os::file_separator());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
    while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
    jio_snprintf(buf, buflen, "%s+0x%x", p1, offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
    jio_snprintf(buf, buflen, PTR_FORMAT, handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
static void print_signal_handler(outputStream* st, int sig,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2431
                                  char* buf, size_t buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2432
  struct sigaction sa;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
  sigaction(sig, NULL, &sa);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
  st->print("%s: ", os::exception_name(sig, buf, buflen));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
  address handler = (sa.sa_flags & SA_SIGINFO)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
                  ? CAST_FROM_FN_PTR(address, sa.sa_sigaction)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
                  : CAST_FROM_FN_PTR(address, sa.sa_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2441
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
  if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
    st->print("SIG_DFL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2444
  } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2445
    st->print("SIG_IGN");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2446
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2447
    st->print("[%s]", get_signal_handler_name(handler, buf, buflen));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2448
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2449
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2450
  st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2451
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2452
  address rh = VMError::get_resetted_sighandler(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2453
  // May be, handler was resetted by VMError?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2454
  if(rh != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2455
    handler = rh;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2456
    sa.sa_flags = VMError::get_resetted_sigflags(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2457
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2458
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2459
  st->print(", sa_flags="   PTR32_FORMAT, sa.sa_flags);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2460
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2461
  // Check: is it our handler?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2462
  if(handler == CAST_FROM_FN_PTR(address, signalHandler) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2463
     handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
    // It is our signal handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2465
    // check for flags
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
    if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
      st->print(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
        ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
        os::Solaris::get_our_sigflags(sig));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2470
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2476
  st->print_cr("Signal Handlers:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2477
  print_signal_handler(st, SIGSEGV, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
  print_signal_handler(st, SIGBUS , buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
  print_signal_handler(st, SIGFPE , buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
  print_signal_handler(st, SIGPIPE, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
  print_signal_handler(st, SIGXFSZ, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
  print_signal_handler(st, SIGILL , buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
  print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
  print_signal_handler(st, ASYNC_SIGNAL, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
  print_signal_handler(st, BREAK_SIGNAL, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
  print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
  print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2488
  print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
  print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
  print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2492
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2493
static char saved_jvm_path[MAXPATHLEN] = { 0 };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2494
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
// Find the full path to the current module, libjvm.so or libjvm_g.so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2496
void os::jvm_path(char *buf, jint buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
  // Error checking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
  if (buflen < MAXPATHLEN) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
    assert(false, "must use a large-enough buffer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
    buf[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
  // Lazy resolve the path to current module.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2504
  if (saved_jvm_path[0] != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2505
    strcpy(buf, saved_jvm_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2506
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2507
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2508
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
  Dl_info dlinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2510
  int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
  assert(ret != 0, "cannot locate libjvm");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
  realpath((char *)dlinfo.dli_fname, buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
8476
7e34c2d4cf9b 7022037: Pause when exiting if debugger is attached on windows
sla
parents: 8106
diff changeset
  2514
  if (Arguments::created_by_gamma_launcher()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
    // Support for the gamma launcher.  Typical value for buf is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2516
    // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so".  If "/jre/lib/" appears at
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
    // the right place in the string, then assume we are installed in a JDK and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
    // we're done.  Otherwise, check for a JAVA_HOME environment variable and fix
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2519
    // up the path so it looks like libjvm.so is installed there (append a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2520
    // fake suffix hotspot/libjvm.so).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2521
    const char *p = buf + strlen(buf) - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2522
    for (int count = 0; p > buf && count < 5; ++count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2523
      for (--p; p > buf && *p != '/'; --p)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2524
        /* empty */ ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2525
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2526
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2527
    if (strncmp(p, "/jre/lib/", 9) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2528
      // Look for JAVA_HOME in the environment.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2529
      char* java_home_var = ::getenv("JAVA_HOME");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2530
      if (java_home_var != NULL && java_home_var[0] != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2531
        char cpu_arch[12];
5922
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2532
        char* jrelib_p;
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2533
        int   len;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2534
        sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2535
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2536
        // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2537
        if (strcmp(cpu_arch, "sparc") == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2538
          strcat(cpu_arch, "v9");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2539
        } else if (strcmp(cpu_arch, "i386") == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2540
          strcpy(cpu_arch, "amd64");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2541
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2542
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2543
        // Check the current module name "libjvm.so" or "libjvm_g.so".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2544
        p = strrchr(buf, '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2545
        assert(strstr(p, "/libjvm") == p, "invalid library name");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2546
        p = strstr(p, "_g") ? "_g" : "";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2547
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2548
        realpath(java_home_var, buf);
5922
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2549
        // determine if this is a legacy image or modules image
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2550
        // modules image doesn't have "jre" subdirectory
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2551
        len = strlen(buf);
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2552
        jrelib_p = buf + len;
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2553
        snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch);
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2554
        if (0 != access(buf, F_OK)) {
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2555
          snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch);
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2556
        }
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2557
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2558
        if (0 == access(buf, F_OK)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2559
          // Use current module name "libjvm[_g].so" instead of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2560
          // "libjvm"debug_only("_g")".so" since for fastdebug version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2561
          // we should have "libjvm.so" but debug_only("_g") adds "_g"!
5922
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2562
          len = strlen(buf);
883ecb03d008 6967423: Hotspot support for modules image
mchung
parents: 5547
diff changeset
  2563
          snprintf(buf + len, buflen-len, "/hotspot/libjvm%s.so", p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2564
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2565
          // Go back to path of .so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2566
          realpath((char *)dlinfo.dli_fname, buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2567
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2568
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2569
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2570
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2571
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2572
  strcpy(saved_jvm_path, buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2573
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2574
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2575
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2576
void os::print_jni_name_prefix_on(outputStream* st, int args_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2577
  // no prefix required, not even "_"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2578
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2580
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2581
void os::print_jni_name_suffix_on(outputStream* st, int args_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2582
  // no suffix required
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2583
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2584
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2585
// 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
  2586
// from src/solaris/hpi/src/system_md.c
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2587
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2588
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
  2589
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2590
  if (errno == 0)  return 0;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2591
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2592
  const char *s = ::strerror(errno);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2593
  size_t n = ::strlen(s);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2594
  if (n >= len) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2595
    n = len - 1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2596
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2597
  ::strncpy(buf, s, n);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2598
  buf[n] = '\0';
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2599
  return n;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2600
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  2601
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2602
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2603
// sun.misc.Signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2605
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2606
  static void UserHandler(int sig, void *siginfo, void *context) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2607
    // Ctrl-C is pressed during error reporting, likely because the error
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2608
    // handler fails to abort. Let VM die immediately.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2609
    if (sig == SIGINT && is_error_reported()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2610
       os::die();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2611
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2612
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2613
    os::signal_notify(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2614
    // We do not need to reinstate the signal handler each time...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2615
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2616
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2617
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2618
void* os::user_handler() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2619
  return CAST_FROM_FN_PTR(void*, UserHandler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2620
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2621
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2622
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2623
  typedef void (*sa_handler_t)(int);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2624
  typedef void (*sa_sigaction_t)(int, siginfo_t *, void *);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2625
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2626
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2627
void* os::signal(int signal_number, void* handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2628
  struct sigaction sigAct, oldSigAct;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2629
  sigfillset(&(sigAct.sa_mask));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2630
  sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2631
  sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2632
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2633
  if (sigaction(signal_number, &sigAct, &oldSigAct))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2634
    // -1 means registration failed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2635
    return (void *)-1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2636
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2637
  return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2638
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2640
void os::signal_raise(int signal_number) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2641
  raise(signal_number);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2642
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2643
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2644
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2645
 * The following code is moved from os.cpp for making this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2646
 * code platform specific, which it is by its very nature.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2647
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2648
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2649
// a counter for each possible signal value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2650
static int Sigexit = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2651
static int Maxlibjsigsigs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2652
static jint *pending_signals = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2653
static int *preinstalled_sigs = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2654
static struct sigaction *chainedsigactions = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2655
static sema_t sig_sem;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2656
typedef int (*version_getting_t)();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2657
version_getting_t os::Solaris::get_libjsig_version = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2658
static int libjsigversion = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2659
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2660
int os::sigexitnum_pd() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2661
  assert(Sigexit > 0, "signal memory not yet initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2662
  return Sigexit;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2663
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2664
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2665
void os::Solaris::init_signal_mem() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2666
  // Initialize signal structures
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2667
  Maxsignum = SIGRTMAX;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2668
  Sigexit = Maxsignum+1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2669
  assert(Maxsignum >0, "Unable to obtain max signal number");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2670
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2671
  Maxlibjsigsigs = Maxsignum;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2672
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2673
  // pending_signals has one int per signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2674
  // The additional signal is for SIGEXIT - exit signal to signal_thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2675
  pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2676
  memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2677
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2678
  if (UseSignalChaining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2679
     chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2680
       * (Maxsignum + 1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2681
     memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2682
     preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2683
     memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2684
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2685
  ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2686
  memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2687
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2688
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2689
void os::signal_init_pd() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2690
  int ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2691
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2692
  ret = ::sema_init(&sig_sem, 0, NULL, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2693
  assert(ret == 0, "sema_init() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2694
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2695
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2696
void os::signal_notify(int signal_number) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2697
  int ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2698
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2699
  Atomic::inc(&pending_signals[signal_number]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2700
  ret = ::sema_post(&sig_sem);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2701
  assert(ret == 0, "sema_post() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2702
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2703
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2704
static int check_pending_signals(bool wait_for_signal) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2705
  int ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2706
  while (true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2707
    for (int i = 0; i < Sigexit + 1; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2708
      jint n = pending_signals[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2709
      if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2710
        return i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2711
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2712
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2713
    if (!wait_for_signal) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2714
      return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2715
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2716
    JavaThread *thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2717
    ThreadBlockInVM tbivm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2718
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2719
    bool threadIsSuspended;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2720
    do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2721
      thread->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2722
      // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2723
      while((ret = ::sema_wait(&sig_sem)) == EINTR)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2724
          ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2725
      assert(ret == 0, "sema_wait() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2726
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2727
      // were we externally suspended while we were waiting?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2728
      threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2729
      if (threadIsSuspended) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2730
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2731
        // The semaphore has been incremented, but while we were waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2732
        // another thread suspended us. We don't want to continue running
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2733
        // while suspended because that would surprise the thread that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2734
        // suspended us.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2735
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2736
        ret = ::sema_post(&sig_sem);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2737
        assert(ret == 0, "sema_post() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2738
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2739
        thread->java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2740
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2741
    } while (threadIsSuspended);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2742
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2743
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2744
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2745
int os::signal_lookup() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2746
  return check_pending_signals(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2747
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2748
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2749
int os::signal_wait() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2750
  return check_pending_signals(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2751
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2752
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2753
////////////////////////////////////////////////////////////////////////////////
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2754
// Virtual Memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2755
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2756
static int page_size = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2758
// The mmap MAP_ALIGN flag is supported on Solaris 9 and later.  init_2() will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2759
// clear this var if support is not available.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2760
static bool has_map_align = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2761
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2762
int os::vm_page_size() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2763
  assert(page_size != -1, "must call os::init");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2764
  return page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2765
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2766
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2767
// Solaris allocates memory by pages.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2768
int os::vm_allocation_granularity() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2769
  assert(page_size != -1, "must call os::init");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2770
  return page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2771
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2772
2268
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2773
bool os::commit_memory(char* addr, size_t bytes, bool exec) {
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2774
  int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2775
  size_t size = bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2776
  return
2268
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2777
     NULL != Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot);
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2778
}
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2779
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2780
bool os::commit_memory(char* addr, size_t bytes, size_t alignment_hint,
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2781
                       bool exec) {
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  2782
  if (commit_memory(addr, bytes, exec)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2783
    if (UseMPSS && alignment_hint > (size_t)vm_page_size()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2784
      // If the large page size has been set and the VM
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2785
      // is using large pages, use the large page size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2786
      // if it is smaller than the alignment hint. This is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2787
      // a case where the VM wants to use a larger alignment size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2788
      // for its own reasons but still want to use large pages
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2789
      // (which is what matters to setting the mpss range.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2790
      size_t page_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2791
      if (large_page_size() < alignment_hint) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2792
        assert(UseLargePages, "Expected to be here for large page use only");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2793
        page_size = large_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2794
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2795
        // If the alignment hint is less than the large page
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2796
        // size, the VM wants a particular alignment (thus the hint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2797
        // for internal reasons.  Try to set the mpss range using
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2798
        // the alignment_hint.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2799
        page_size = alignment_hint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2800
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2801
      // Since this is a hint, ignore any failures.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2802
      (void)Solaris::set_mpss_range(addr, bytes, page_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2803
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2804
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2805
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2806
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2807
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2808
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2809
// Uncommit the pages in a specified region.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2810
void os::free_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2811
  if (madvise(addr, bytes, MADV_FREE) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2812
    debug_only(warning("MADV_FREE failed."));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2813
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2814
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2815
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2816
5085
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 4493
diff changeset
  2817
bool os::create_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
  2818
  return os::commit_memory(addr, size);
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 4493
diff changeset
  2819
}
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 4493
diff changeset
  2820
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 4493
diff changeset
  2821
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
  2822
  return os::uncommit_memory(addr, size);
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 4493
diff changeset
  2823
}
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 4493
diff changeset
  2824
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2825
// Change the page size in a given range.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2826
void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2827
  assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2828
  assert((intptr_t)(addr + bytes) % alignment_hint == 0, "End should be aligned.");
9341
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  2829
  if (UseLargePages && UseMPSS) {
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  2830
    Solaris::set_mpss_range(addr, bytes, alignment_hint);
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  2831
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2832
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2833
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2834
// Tell the OS to make the range local to the first-touching LWP
388
bcc631c5bbec 6684395: Port NUMA-aware allocator to linux
iveresov
parents: 336
diff changeset
  2835
void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2836
  assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2837
  if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2838
    debug_only(warning("MADV_ACCESS_LWP failed."));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2839
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2840
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2841
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2842
// Tell the OS that this range would be accessed from different LWPs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2843
void os::numa_make_global(char *addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2844
  assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2845
  if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2846
    debug_only(warning("MADV_ACCESS_MANY failed."));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2847
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2848
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2849
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2850
// Get the number of the locality groups.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2851
size_t os::numa_get_groups_num() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2852
  size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2853
  return n != -1 ? n : 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2854
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2855
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2856
// Get a list of leaf locality groups. A leaf lgroup is group that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2857
// doesn't have any children. Typical leaf group is a CPU or a CPU/memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2858
// board. An LWP is assigned to one of these groups upon creation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2859
size_t os::numa_get_leaf_groups(int *ids, size_t size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2860
   if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2861
     ids[0] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2862
     return 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2863
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2864
   int result_size = 0, top = 1, bottom = 0, cur = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2865
   for (int k = 0; k < size; k++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2866
     int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2867
                                    (Solaris::lgrp_id_t*)&ids[top], size - top);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2868
     if (r == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2869
       ids[0] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2870
       return 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2871
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2872
     if (!r) {
391
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2873
       // That's a leaf node.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2874
       assert (bottom <= cur, "Sanity check");
391
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2875
       // Check if the node has memory
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2876
       if (Solaris::lgrp_resources(Solaris::lgrp_cookie(), ids[cur],
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2877
                                   NULL, 0, LGRP_RSRC_MEM) > 0) {
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2878
         ids[bottom++] = ids[cur];
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2879
       }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2880
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2881
     top += r;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2882
     cur++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2883
   }
976
241230d48896 6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents: 975
diff changeset
  2884
   if (bottom == 0) {
241230d48896 6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents: 975
diff changeset
  2885
     // Handle a situation, when the OS reports no memory available.
241230d48896 6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents: 975
diff changeset
  2886
     // Assume UMA architecture.
241230d48896 6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents: 975
diff changeset
  2887
     ids[0] = 0;
241230d48896 6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents: 975
diff changeset
  2888
     return 1;
241230d48896 6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents: 975
diff changeset
  2889
   }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2890
   return bottom;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2891
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2892
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 391
diff changeset
  2893
// Detect the topology change. Typically happens during CPU plugging-unplugging.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2894
bool os::numa_topology_changed() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2895
  int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2896
  if (is_stale != -1 && is_stale) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2897
    Solaris::lgrp_fini(Solaris::lgrp_cookie());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2898
    Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2899
    assert(c != 0, "Failure to initialize LGRP API");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2900
    Solaris::set_lgrp_cookie(c);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2901
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2902
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2903
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2904
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2905
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2906
// Get the group id of the current LWP.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2907
int os::numa_get_group_id() {
391
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2908
  int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2909
  if (lgrp_id == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2910
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2911
  }
391
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2912
  const int size = os::numa_get_groups_num();
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2913
  int *ids = (int*)alloca(size * sizeof(int));
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2914
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2915
  // Get the ids of all lgroups with memory; r is the count.
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2916
  int r = Solaris::lgrp_resources(Solaris::lgrp_cookie(), lgrp_id,
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2917
                                  (Solaris::lgrp_id_t*)ids, size, LGRP_RSRC_MEM);
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2918
  if (r <= 0) {
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2919
    return 0;
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2920
  }
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  2921
  return ids[os::random() % r];
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2922
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2923
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2924
// Request information about the page.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2925
bool os::get_page_info(char *start, page_info* info) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2926
  const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2927
  uint64_t addr = (uintptr_t)start;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2928
  uint64_t outdata[2];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2929
  uint_t validity = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2930
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2931
  if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2932
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2933
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2934
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2935
  info->size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2936
  info->lgrp_id = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2937
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2938
  if ((validity & 1) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2939
    if ((validity & 2) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2940
      info->lgrp_id = outdata[0];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2941
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2942
    if ((validity & 4) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2943
      info->size = outdata[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2944
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2945
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2946
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2947
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2948
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2949
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2950
// Scan the pages from start to end until a page different than
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2951
// the one described in the info parameter is encountered.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2952
char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2953
  const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2954
  const size_t types = sizeof(info_types) / sizeof(info_types[0]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2955
  uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2956
  uint_t validity[MAX_MEMINFO_CNT];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2957
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2958
  size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2959
  uint64_t p = (uint64_t)start;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2960
  while (p < (uint64_t)end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2961
    addrs[0] = p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2962
    size_t addrs_count = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2963
    while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] < (uint64_t)end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2964
      addrs[addrs_count] = addrs[addrs_count - 1] + page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2965
      addrs_count++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2966
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2967
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2968
    if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2969
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2970
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2971
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2972
    size_t i = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2973
    for (; i < addrs_count; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2974
      if ((validity[i] & 1) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2975
        if ((validity[i] & 4) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2976
          if (outdata[types * i + 1] != page_expected->size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2977
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2978
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2979
        } else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2980
          if (page_expected->size != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2981
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2982
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2983
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2984
        if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2985
          if (outdata[types * i] != page_expected->lgrp_id) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2986
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2987
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2988
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2989
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2990
        return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2991
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2992
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2993
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2994
    if (i != addrs_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2995
      if ((validity[i] & 2) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2996
        page_found->lgrp_id = outdata[types * i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2997
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2998
        page_found->lgrp_id = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2999
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3000
      if ((validity[i] & 4) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3001
        page_found->size = outdata[types * i + 1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3002
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3003
        page_found->size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3004
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3005
      return (char*)addrs[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3006
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3007
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3008
    p = addrs[addrs_count - 1] + page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3009
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3010
  return end;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3011
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3013
bool os::uncommit_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3014
  size_t size = bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3015
  // Map uncommitted pages PROT_NONE so we fail early if we touch an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3016
  // uncommitted page. Otherwise, the read/write might succeed if we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3017
  // have enough swap space to back the physical page.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3018
  return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3019
    NULL != Solaris::mmap_chunk(addr, size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3020
                                MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3021
                                PROT_NONE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3022
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3024
char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3025
  char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3027
  if (b == MAP_FAILED) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3028
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3029
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3030
  return b;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3031
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3032
233
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3033
char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3034
  char* addr = requested_addr;
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3035
  int flags = MAP_PRIVATE | MAP_NORESERVE;
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3036
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3037
  assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap");
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3038
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3039
  if (fixed) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3040
    flags |= MAP_FIXED;
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3041
  } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3042
    flags |= MAP_ALIGN;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3043
    addr = (char*) alignment_hint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3044
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3046
  // Map uncommitted pages PROT_NONE so we fail early if we touch an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3047
  // uncommitted page. Otherwise, the read/write might succeed if we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3048
  // have enough swap space to back the physical page.
233
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3049
  return mmap_chunk(addr, bytes, flags, PROT_NONE);
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3050
}
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3051
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3052
char* os::reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3053
  char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3054
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3055
  guarantee(requested_addr == NULL || requested_addr == addr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3056
            "OS failed to return requested mmap address.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3057
  return addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3058
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3059
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3060
// Reserve memory at an arbitrary address, only if that area is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3061
// available (and not reserved for something else).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3062
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3063
char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3064
  const int max_tries = 10;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3065
  char* base[max_tries];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3066
  size_t size[max_tries];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3067
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3068
  // Solaris adds a gap between mmap'ed regions.  The size of the gap
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3069
  // is dependent on the requested size and the MMU.  Our initial gap
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3070
  // value here is just a guess and will be corrected later.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3071
  bool had_top_overlap = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3072
  bool have_adjusted_gap = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3073
  size_t gap = 0x400000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3075
  // Assert only that the size is a multiple of the page size, since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3076
  // that's all that mmap requires, and since that's all we really know
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3077
  // about at this low abstraction level.  If we need higher alignment,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3078
  // we can either pass an alignment to this method or verify alignment
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3079
  // in one of the methods further up the call chain.  See bug 5044738.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3080
  assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3081
233
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3082
  // Since snv_84, Solaris attempts to honor the address hint - see 5003415.
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3083
  // Give it a try, if the kernel honors the hint we can return immediately.
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3084
  char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false);
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3085
  volatile int err = errno;
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3086
  if (addr == requested_addr) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3087
    return addr;
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3088
  } else if (addr != NULL) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3089
    unmap_memory(addr, bytes);
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3090
  }
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3091
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3092
  if (PrintMiscellaneous && Verbose) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3093
    char buf[256];
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3094
    buf[0] = '\0';
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3095
    if (addr == NULL) {
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3096
      jio_snprintf(buf, sizeof(buf), ": %s", strerror(err));
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3097
    }
7704
cc9d3ed42704 7006505: Use kstat info to identify SPARC processor
kvn
parents: 7405
diff changeset
  3098
    warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at "
233
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3099
            PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3100
            "%s", bytes, requested_addr, addr, buf);
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3101
  }
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3102
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3103
  // Address hint method didn't work.  Fall back to the old method.
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3104
  // In theory, once SNV becomes our oldest supported platform, this
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3105
  // code will no longer be needed.
9f4505c94388 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 1
diff changeset
  3106
  //
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3107
  // Repeatedly allocate blocks until the block is allocated at the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3108
  // right spot. Give up after max_tries.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3109
  int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3110
  for (i = 0; i < max_tries; ++i) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3111
    base[i] = reserve_memory(bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3113
    if (base[i] != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3114
      // Is this the block we wanted?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3115
      if (base[i] == requested_addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3116
        size[i] = bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3117
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3118
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3119
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3120
      // check that the gap value is right
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3121
      if (had_top_overlap && !have_adjusted_gap) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3122
        size_t actual_gap = base[i-1] - base[i] - bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3123
        if (gap != actual_gap) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3124
          // adjust the gap value and retry the last 2 allocations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3125
          assert(i > 0, "gap adjustment code problem");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3126
          have_adjusted_gap = true;  // adjust the gap only once, just in case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3127
          gap = actual_gap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3128
          if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3129
            warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3130
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3131
          unmap_memory(base[i], bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3132
          unmap_memory(base[i-1], size[i-1]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3133
          i-=2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3134
          continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3135
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3136
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3137
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3138
      // Does this overlap the block we wanted? Give back the overlapped
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3139
      // parts and try again.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3140
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3141
      // There is still a bug in this code: if top_overlap == bytes,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3142
      // the overlap is offset from requested region by the value of gap.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3143
      // In this case giving back the overlapped part will not work,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3144
      // because we'll give back the entire block at base[i] and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3145
      // therefore the subsequent allocation will not generate a new gap.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3146
      // This could be fixed with a new algorithm that used larger
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3147
      // or variable size chunks to find the requested region -
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3148
      // but such a change would introduce additional complications.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3149
      // It's rare enough that the planets align for this bug,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3150
      // so we'll just wait for a fix for 6204603/5003415 which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3151
      // will provide a mmap flag to allow us to avoid this business.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3152
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3153
      size_t top_overlap = requested_addr + (bytes + gap) - base[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3154
      if (top_overlap >= 0 && top_overlap < bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3155
        had_top_overlap = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3156
        unmap_memory(base[i], top_overlap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3157
        base[i] += top_overlap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3158
        size[i] = bytes - top_overlap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3159
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3160
        size_t bottom_overlap = base[i] + bytes - requested_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3161
        if (bottom_overlap >= 0 && bottom_overlap < bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3162
          if (PrintMiscellaneous && Verbose && bottom_overlap == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3163
            warning("attempt_reserve_memory_at: possible alignment bug");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3164
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3165
          unmap_memory(requested_addr, bottom_overlap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3166
          size[i] = bytes - bottom_overlap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3167
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3168
          size[i] = bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3169
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3170
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3171
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3172
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3173
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3174
  // Give back the unused reserved pieces.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3175
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3176
  for (int j = 0; j < i; ++j) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3177
    if (base[j] != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3178
      unmap_memory(base[j], size[j]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3179
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3180
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3181
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3182
  return (i < max_tries) ? requested_addr : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3183
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3184
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3185
bool os::release_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3186
  size_t size = bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3187
  return munmap(addr, size) == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3188
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3189
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3190
static bool solaris_mprotect(char* addr, size_t bytes, int prot) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3191
  assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3192
         "addr must be page aligned");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3193
  int retVal = mprotect(addr, bytes, prot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3194
  return retVal == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3195
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3196
823
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3197
// Protect memory (Used to pass readonly pages through
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3198
// JNI GetArray<type>Elements with empty arrays.)
1664
fc9ed50498fb 6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
coleenp
parents: 1615
diff changeset
  3199
// Also, used for serialization page and for compressed oops null pointer
fc9ed50498fb 6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
coleenp
parents: 1615
diff changeset
  3200
// checking.
823
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3201
bool os::protect_memory(char* addr, size_t bytes, ProtType prot,
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3202
                        bool is_committed) {
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3203
  unsigned int p = 0;
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3204
  switch (prot) {
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3205
  case MEM_PROT_NONE: p = PROT_NONE; break;
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3206
  case MEM_PROT_READ: p = PROT_READ; break;
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3207
  case MEM_PROT_RW:   p = PROT_READ|PROT_WRITE; break;
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3208
  case MEM_PROT_RWX:  p = PROT_READ|PROT_WRITE|PROT_EXEC; break;
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3209
  default:
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3210
    ShouldNotReachHere();
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3211
  }
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3212
  // is_committed is unused.
9a5271881bc0 6716785: implicit null checks not triggering with CompressedOops
coleenp
parents: 670
diff changeset
  3213
  return solaris_mprotect(addr, bytes, p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3214
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3215
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3216
// guard_memory and unguard_memory only happens within stack guard pages.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3217
// Since ISM pertains only to the heap, guard and unguard memory should not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3218
/// happen with an ISM region.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3219
bool os::guard_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3220
  return solaris_mprotect(addr, bytes, PROT_NONE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3221
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3222
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3223
bool os::unguard_memory(char* addr, size_t bytes) {
1664
fc9ed50498fb 6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
coleenp
parents: 1615
diff changeset
  3224
  return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3225
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3226
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3227
// Large page support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3228
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3229
// UseLargePages is the master flag to enable/disable large page memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3230
// UseMPSS and UseISM are supported for compatibility reasons. Their combined
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3231
// effects can be described in the following table:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3232
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3233
// UseLargePages UseMPSS UseISM
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3234
//    false         *       *   => UseLargePages is the master switch, turning
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3235
//                                 it off will turn off both UseMPSS and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3236
//                                 UseISM. VM will not use large page memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3237
//                                 regardless the settings of UseMPSS/UseISM.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3238
//     true      false    false => Unless future Solaris provides other
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3239
//                                 mechanism to use large page memory, this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3240
//                                 combination is equivalent to -UseLargePages,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3241
//                                 VM will not use large page memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3242
//     true      true     false => JVM will use MPSS for large page memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3243
//                                 This is the default behavior.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3244
//     true      false    true  => JVM will use ISM for large page memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3245
//     true      true     true  => JVM will use ISM if it is available.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3246
//                                 Otherwise, JVM will fall back to MPSS.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3247
//                                 Becaues ISM is now available on all
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3248
//                                 supported Solaris versions, this combination
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3249
//                                 is equivalent to +UseISM -UseMPSS.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3250
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3251
typedef int (*getpagesizes_func_type) (size_t[], int);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3252
static size_t _large_page_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3253
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3254
bool os::Solaris::ism_sanity_check(bool warn, size_t * page_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3255
  // x86 uses either 2M or 4M page, depending on whether PAE (Physical Address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3256
  // Extensions) mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. Sparc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3257
  // can support multiple page sizes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3258
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3259
  // Don't bother to probe page size because getpagesizes() comes with MPSS.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3260
  // ISM is only recommended on old Solaris where there is no MPSS support.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3261
  // Simply choose a conservative value as default.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3262
  *page_size = LargePageSizeInBytes ? LargePageSizeInBytes :
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  3263
               SPARC_ONLY(4 * M) IA32_ONLY(4 * M) AMD64_ONLY(2 * M)
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  3264
               ARM_ONLY(2 * M);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3265
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3266
  // ISM is available on all supported Solaris versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3267
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3268
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3269
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3270
// Insertion sort for small arrays (descending order).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3271
static void insertion_sort_descending(size_t* array, int len) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3272
  for (int i = 0; i < len; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3273
    size_t val = array[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3274
    for (size_t key = i; key > 0 && array[key - 1] < val; --key) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3275
      size_t tmp = array[key];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3276
      array[key] = array[key - 1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3277
      array[key - 1] = tmp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3278
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3279
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3280
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3281
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3282
bool os::Solaris::mpss_sanity_check(bool warn, size_t * page_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3283
  getpagesizes_func_type getpagesizes_func =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3284
    CAST_TO_FN_PTR(getpagesizes_func_type, dlsym(RTLD_DEFAULT, "getpagesizes"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3285
  if (getpagesizes_func == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3286
    if (warn) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3287
      warning("MPSS is not supported by the operating system.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3288
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3289
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3290
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3291
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3292
  const unsigned int usable_count = VM_Version::page_size_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3293
  if (usable_count == 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3294
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3295
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3296
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3297
  // Fill the array of page sizes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3298
  int n = getpagesizes_func(_page_sizes, page_sizes_max);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3299
  assert(n > 0, "Solaris bug?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3300
  if (n == page_sizes_max) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3301
    // Add a sentinel value (necessary only if the array was completely filled
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3302
    // since it is static (zeroed at initialization)).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3303
    _page_sizes[--n] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3304
    DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3305
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3306
  assert(_page_sizes[n] == 0, "missing sentinel");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3307
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3308
  if (n == 1) return false;     // Only one page size available.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3309
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3310
  // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3311
  // select up to usable_count elements.  First sort the array, find the first
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3312
  // acceptable value, then copy the usable sizes to the top of the array and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3313
  // trim the rest.  Make sure to include the default page size :-).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3314
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3315
  // A better policy could get rid of the 4M limit by taking the sizes of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3316
  // important VM memory regions (java heap and possibly the code cache) into
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3317
  // account.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3318
  insertion_sort_descending(_page_sizes, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3319
  const size_t size_limit =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3320
    FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3321
  int beg;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3322
  for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3323
  const int end = MIN2((int)usable_count, n) - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3324
  for (int cur = 0; cur < end; ++cur, ++beg) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3325
    _page_sizes[cur] = _page_sizes[beg];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3326
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3327
  _page_sizes[end] = vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3328
  _page_sizes[end + 1] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3329
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3330
  if (_page_sizes[end] > _page_sizes[end - 1]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3331
    // Default page size is not the smallest; sort again.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3332
    insertion_sort_descending(_page_sizes, end + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3333
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3334
  *page_size = _page_sizes[0];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3335
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3336
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3337
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3338
9419
f0360dfe734d 7040485: Use transparent huge page on linux by default
iveresov
parents: 9341
diff changeset
  3339
void os::large_page_init() {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3340
  if (!UseLargePages) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3341
    UseISM = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3342
    UseMPSS = false;
9419
f0360dfe734d 7040485: Use transparent huge page on linux by default
iveresov
parents: 9341
diff changeset
  3343
    return;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3344
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3345
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3346
  // print a warning if any large page related flag is specified on command line
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3347
  bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages)        ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3348
                         !FLAG_IS_DEFAULT(UseISM)               ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3349
                         !FLAG_IS_DEFAULT(UseMPSS)              ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3350
                         !FLAG_IS_DEFAULT(LargePageSizeInBytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3351
  UseISM = UseISM &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3352
           Solaris::ism_sanity_check(warn_on_failure, &_large_page_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3353
  if (UseISM) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3354
    // ISM disables MPSS to be compatible with old JDK behavior
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3355
    UseMPSS = false;
252
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 234
diff changeset
  3356
    _page_sizes[0] = _large_page_size;
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 234
diff changeset
  3357
    _page_sizes[1] = vm_page_size();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3358
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3359
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3360
  UseMPSS = UseMPSS &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3361
            Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3362
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3363
  UseLargePages = UseISM || UseMPSS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3364
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3366
bool os::Solaris::set_mpss_range(caddr_t start, size_t bytes, size_t align) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3367
  // Signal to OS that we want large pages for addresses
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3368
  // from addr, addr + bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3369
  struct memcntl_mha mpss_struct;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3370
  mpss_struct.mha_cmd = MHA_MAPSIZE_VA;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3371
  mpss_struct.mha_pagesize = align;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3372
  mpss_struct.mha_flags = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3373
  if (memcntl(start, bytes, MC_HAT_ADVISE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3374
              (caddr_t) &mpss_struct, 0, 0) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3375
    debug_only(warning("Attempt to use MPSS failed."));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3376
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3377
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3378
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3379
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3380
2268
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  3381
char* os::reserve_memory_special(size_t bytes, char* addr, bool exec) {
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  3382
  // "exec" is passed in but not used.  Creating the shared image for
bea8be80ec88 6541756: Reduce executable C-heap
coleenp
parents: 2259
diff changeset
  3383
  // the code cache doesn't have an SHM_X executable permission to check.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3384
  assert(UseLargePages && UseISM, "only for ISM large pages");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3385
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3386
  size_t size = bytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3387
  char* retAddr = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3388
  int shmid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3389
  key_t ismKey;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3390
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3391
  bool warn_on_failure = UseISM &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3392
                        (!FLAG_IS_DEFAULT(UseLargePages)         ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3393
                         !FLAG_IS_DEFAULT(UseISM)                ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3394
                         !FLAG_IS_DEFAULT(LargePageSizeInBytes)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3395
                        );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3396
  char msg[128];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3397
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3398
  ismKey = IPC_PRIVATE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3399
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3400
  // Create a large shared memory region to attach to based on size.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3401
  // Currently, size is the total size of the heap
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3402
  shmid = shmget(ismKey, size, SHM_R | SHM_W | IPC_CREAT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3403
  if (shmid == -1){
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3404
     if (warn_on_failure) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3405
       jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3406
       warning(msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3407
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3408
     return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3409
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3410
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3411
  // Attach to the region
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3412
  retAddr = (char *) shmat(shmid, 0, SHM_SHARE_MMU | SHM_R | SHM_W);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3413
  int err = errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3414
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3415
  // Remove shmid. If shmat() is successful, the actual shared memory segment
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3416
  // will be deleted when it's detached by shmdt() or when the process
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3417
  // terminates. If shmat() is not successful this will remove the shared
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3418
  // segment immediately.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3419
  shmctl(shmid, IPC_RMID, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3420
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3421
  if (retAddr == (char *) -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3422
    if (warn_on_failure) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3423
      jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3424
      warning(msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3425
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3426
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3427
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3428
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3429
  return retAddr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3430
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3431
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3432
bool os::release_memory_special(char* base, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3433
  // detaching the SHM segment will also delete it, see reserve_memory_special()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3434
  int rslt = shmdt(base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3435
  return rslt == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3436
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3437
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3438
size_t os::large_page_size() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3439
  return _large_page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3440
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3441
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3442
// MPSS allows application to commit large page memory on demand; with ISM
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3443
// the entire memory region must be allocated as shared memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3444
bool os::can_commit_large_page_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3445
  return UseISM ? false : true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3446
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3447
252
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 234
diff changeset
  3448
bool os::can_execute_large_page_memory() {
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 234
diff changeset
  3449
  return UseISM ? false : true;
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 234
diff changeset
  3450
}
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 234
diff changeset
  3451
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3452
static int os_sleep(jlong millis, bool interruptible) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3453
  const jlong limit = INT_MAX;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3454
  jlong prevtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3455
  int res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3456
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3457
  while (millis > limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3458
    if ((res = os_sleep(limit, interruptible)) != OS_OK)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3459
      return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3460
    millis -= limit;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3461
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3462
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3463
  // Restart interrupted polls with new parameters until the proper delay
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3464
  // has been completed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3465
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3466
  prevtime = getTimeMillis();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3467
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3468
  while (millis > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3469
    jlong newtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3470
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3471
    if (!interruptible) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3472
      // Following assert fails for os::yield_all:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3473
      // assert(!thread->is_Java_thread(), "must not be java thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3474
      res = poll(NULL, 0, millis);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3475
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3476
      JavaThread *jt = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3477
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3478
      INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3479
        os::Solaris::clear_interrupted);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3480
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3481
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3482
    // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3483
    // thread.Interrupt.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3484
7392
27133691a020 6751923: JNDI wake up when clock_settime() is called
zgu
parents: 6964
diff changeset
  3485
    // See c/r 6751923. Poll can return 0 before time
27133691a020 6751923: JNDI wake up when clock_settime() is called
zgu
parents: 6964
diff changeset
  3486
    // has elapsed if time is set via clock_settime (as NTP does).
27133691a020 6751923: JNDI wake up when clock_settime() is called
zgu
parents: 6964
diff changeset
  3487
    // res == 0 if poll timed out (see man poll RETURN VALUES)
27133691a020 6751923: JNDI wake up when clock_settime() is called
zgu
parents: 6964
diff changeset
  3488
    // using the logic below checks that we really did
27133691a020 6751923: JNDI wake up when clock_settime() is called
zgu
parents: 6964
diff changeset
  3489
    // sleep at least "millis" if not we'll sleep again.
27133691a020 6751923: JNDI wake up when clock_settime() is called
zgu
parents: 6964
diff changeset
  3490
    if( ( res == 0 ) || ((res == OS_ERR) && (errno == EINTR))) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3491
      newtime = getTimeMillis();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3492
      assert(newtime >= prevtime, "time moving backwards");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3493
    /* Doing prevtime and newtime in microseconds doesn't help precision,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3494
       and trying to round up to avoid lost milliseconds can result in a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3495
       too-short delay. */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3496
      millis -= newtime - prevtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3497
      if(millis <= 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3498
        return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3499
      prevtime = newtime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3500
    } else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3501
      return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3502
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3503
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3504
  return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3505
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3506
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3507
// Read calls from inside the vm need to perform state transitions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3508
size_t os::read(int fd, void *buf, unsigned int nBytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3509
  INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3510
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3511
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3512
size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3513
  INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3514
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3515
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3516
int os::sleep(Thread* thread, jlong millis, bool interruptible) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3517
  assert(thread == Thread::current(),  "thread consistency check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3518
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3519
  // TODO-FIXME: this should be removed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3520
  // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3521
  // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3522
  // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3523
  // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3524
  // is fooled into believing that the system is making progress. In the code below we block the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3525
  // the watcher thread while safepoint is in progress so that it would not appear as though the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3526
  // system is making progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3527
  if (!Solaris::T2_libthread() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3528
      thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3529
    // We now try to acquire the threads lock. Since this lock is held by the VM thread during
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3530
    // the entire safepoint, the watcher thread will  line up here during the safepoint.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3531
    Threads_lock->lock_without_safepoint_check();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3532
    Threads_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3533
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3534
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3535
  if (thread->is_Java_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3536
    // This is a JavaThread so we honor the _thread_blocked protocol
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3537
    // even for sleeps of 0 milliseconds. This was originally done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3538
    // as a workaround for bug 4338139. However, now we also do it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3539
    // to honor the suspend-equivalent protocol.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3540
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3541
    JavaThread *jt = (JavaThread *) thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3542
    ThreadBlockInVM tbivm(jt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3543
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3544
    jt->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3545
    // cleared by handle_special_suspend_equivalent_condition() or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3546
    // java_suspend_self() via check_and_wait_while_suspended()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3547
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3548
    int ret_code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3549
    if (millis <= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3550
      thr_yield();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3551
      ret_code = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3552
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3553
      // The original sleep() implementation did not create an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3554
      // OSThreadWaitState helper for sleeps of 0 milliseconds.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3555
      // I'm preserving that decision for now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3556
      OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3557
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3558
      ret_code = os_sleep(millis, interruptible);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3559
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3560
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3561
    // were we externally suspended while we were waiting?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3562
    jt->check_and_wait_while_suspended();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3563
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3564
    return ret_code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3565
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3566
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3567
  // non-JavaThread from this point on:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3568
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3569
  if (millis <= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3570
    thr_yield();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3571
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3572
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3573
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3574
  OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3575
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3576
  return os_sleep(millis, interruptible);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3577
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3578
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3579
int os::naked_sleep() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3580
  // %% make the sleep time an integer flag. for now use 1 millisec.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3581
  return os_sleep(1, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3582
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3583
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3584
// Sleep forever; naked call to OS-specific sleep; use with CAUTION
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3585
void os::infinite_sleep() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3586
  while (true) {    // sleep forever ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3587
    ::sleep(100);   // ... 100 seconds at a time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3588
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3589
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3590
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3591
// Used to convert frequent JVM_Yield() to nops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3592
bool os::dont_yield() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3593
  if (DontYieldALot) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3594
    static hrtime_t last_time = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3595
    hrtime_t diff = getTimeNanos() - last_time;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3596
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3597
    if (diff < DontYieldALotInterval * 1000000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3598
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3599
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3600
    last_time += diff;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3601
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3602
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3603
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3604
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3605
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3606
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3607
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3608
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3609
// Caveat: Solaris os::yield() causes a thread-state transition whereas
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3610
// the linux and win32 implementations do not.  This should be checked.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3611
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3612
void os::yield() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3613
  // Yields to all threads with same or greater priority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3614
  os::sleep(Thread::current(), 0, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3615
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3616
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3617
// Note that yield semantics are defined by the scheduling class to which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3618
// the thread currently belongs.  Typically, yield will _not yield to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3619
// other equal or higher priority threads that reside on the dispatch queues
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3620
// of other CPUs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3621
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3622
os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3623
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3624
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3625
// On Solaris we found that yield_all doesn't always yield to all other threads.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3626
// There have been cases where there is a thread ready to execute but it doesn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3627
// get an lwp as the VM thread continues to spin with sleeps of 1 millisecond.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3628
// The 1 millisecond wait doesn't seem long enough for the kernel to issue a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3629
// SIGWAITING signal which will cause a new lwp to be created. So we count the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3630
// number of times yield_all is called in the one loop and increase the sleep
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3631
// time after 8 attempts. If this fails too we increase the concurrency level
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3632
// so that the starving thread would get an lwp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3633
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3634
void os::yield_all(int attempts) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3635
  // Yields to all threads, including threads with lower priorities
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3636
  if (attempts == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3637
    os::sleep(Thread::current(), 1, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3638
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3639
    int iterations = attempts % 30;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3640
    if (iterations == 0 && !os::Solaris::T2_libthread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3641
      // thr_setconcurrency and _getconcurrency make sense only under T1.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3642
      int noofLWPS = thr_getconcurrency();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3643
      if (noofLWPS < (Threads::number_of_threads() + 2)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3644
        thr_setconcurrency(thr_getconcurrency() + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3645
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3646
    } else if (iterations < 25) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3647
      os::sleep(Thread::current(), 1, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3648
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3649
      os::sleep(Thread::current(), 10, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3650
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3651
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3652
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3654
// Called from the tight loops to possibly influence time-sharing heuristics
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3655
void os::loop_breaker(int attempts) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3656
  os::yield_all(attempts);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3657
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3658
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3659
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3660
// Interface for setting lwp priorities.  If we are using T2 libthread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3661
// which forces the use of BoundThreads or we manually set UseBoundThreads,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3662
// all of our threads will be assigned to real lwp's.  Using the thr_setprio
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3663
// function is meaningless in this mode so we must adjust the real lwp's priority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3664
// The routines below implement the getting and setting of lwp priorities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3665
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3666
// Note: There are three priority scales used on Solaris.  Java priotities
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3667
//       which range from 1 to 10, libthread "thr_setprio" scale which range
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3668
//       from 0 to 127, and the current scheduling class of the process we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3669
//       are running in.  This is typically from -60 to +60.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3670
//       The setting of the lwp priorities in done after a call to thr_setprio
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3671
//       so Java priorities are mapped to libthread priorities and we map from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3672
//       the latter to lwp priorities.  We don't keep priorities stored in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3673
//       Java priorities since some of our worker threads want to set priorities
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3674
//       higher than all Java threads.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3675
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3676
// For related information:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3677
// (1)  man -s 2 priocntl
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3678
// (2)  man -s 4 priocntl
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3679
// (3)  man dispadmin
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3680
// =    librt.so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3681
// =    libthread/common/rtsched.c - thrp_setlwpprio().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3682
// =    ps -cL <pid> ... to validate priority.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3683
// =    sched_get_priority_min and _max
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3684
//              pthread_create
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3685
//              sched_setparam
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3686
//              pthread_setschedparam
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3687
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3688
// Assumptions:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3689
// +    We assume that all threads in the process belong to the same
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3690
//              scheduling class.   IE. an homogenous process.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3691
// +    Must be root or in IA group to change change "interactive" attribute.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3692
//              Priocntl() will fail silently.  The only indication of failure is when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3693
//              we read-back the value and notice that it hasn't changed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3694
// +    Interactive threads enter the runq at the head, non-interactive at the tail.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3695
// +    For RT, change timeslice as well.  Invariant:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3696
//              constant "priority integral"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3697
//              Konst == TimeSlice * (60-Priority)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3698
//              Given a priority, compute appropriate timeslice.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3699
// +    Higher numerical values have higher priority.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3700
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3701
// sched class attributes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3702
typedef struct {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3703
        int   schedPolicy;              // classID
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3704
        int   maxPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3705
        int   minPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3706
} SchedInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3707
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3708
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3709
static SchedInfo tsLimits, iaLimits, rtLimits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3710
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3711
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3712
static int  ReadBackValidate = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3713
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3714
static int  myClass     = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3715
static int  myMin       = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3716
static int  myMax       = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3717
static int  myCur       = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3718
static bool priocntl_enable = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3719
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3720
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3721
// Call the version of priocntl suitable for all supported versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3722
// of Solaris. We need to call through this wrapper so that we can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3723
// build on Solaris 9 and run on Solaris 8, 9 and 10.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3724
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3725
// This code should be removed if we ever stop supporting Solaris 8
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3726
// and earlier releases.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3727
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3728
static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3729
typedef long (*priocntl_type)(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3730
static priocntl_type priocntl_ptr = priocntl_stub;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3731
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3732
// Stub to set the value of the real pointer, and then call the real
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3733
// function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3734
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3735
static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3736
  // Try Solaris 8- name only.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3737
  priocntl_type tmp = (priocntl_type)dlsym(RTLD_DEFAULT, "__priocntl");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3738
  guarantee(tmp != NULL, "priocntl function not found.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3739
  priocntl_ptr = tmp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3740
  return (*priocntl_ptr)(PC_VERSION, idtype, id, cmd, arg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3741
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3742
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3743
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3744
// lwp_priocntl_init
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3745
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3746
// Try to determine the priority scale for our process.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3747
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3748
// Return errno or 0 if OK.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3749
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3750
static
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3751
int     lwp_priocntl_init ()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3752
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3753
  int rslt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3754
  pcinfo_t ClassInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3755
  pcparms_t ParmInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3756
  int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3758
  if (!UseThreadPriorities) return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3759
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3760
  // We are using Bound threads, we need to determine our priority ranges
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3761
  if (os::Solaris::T2_libthread() || UseBoundThreads) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3762
    // If ThreadPriorityPolicy is 1, switch tables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3763
    if (ThreadPriorityPolicy == 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3764
      for (i = 0 ; i < MaxPriority+1; i++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3765
        os::java_to_os_priority[i] = prio_policy1[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3766
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3767
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3768
  // Not using Bound Threads, set to ThreadPolicy 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3769
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3770
    for ( i = 0 ; i < MaxPriority+1; i++ ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3771
      os::java_to_os_priority[i] = prio_policy1[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3772
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3773
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3774
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3775
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3776
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3777
  // Get IDs for a set of well-known scheduling classes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3778
  // TODO-FIXME: GETCLINFO returns the current # of classes in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3779
  // the system.  We should have a loop that iterates over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3780
  // classID values, which are known to be "small" integers.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3781
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3782
  strcpy(ClassInfo.pc_clname, "TS");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3783
  ClassInfo.pc_cid = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3784
  rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3785
  if (rslt < 0) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3786
  assert(ClassInfo.pc_cid != -1, "cid for TS class is -1");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3787
  tsLimits.schedPolicy = ClassInfo.pc_cid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3788
  tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3789
  tsLimits.minPrio = -tsLimits.maxPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3790
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3791
  strcpy(ClassInfo.pc_clname, "IA");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3792
  ClassInfo.pc_cid = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3793
  rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3794
  if (rslt < 0) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3795
  assert(ClassInfo.pc_cid != -1, "cid for IA class is -1");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3796
  iaLimits.schedPolicy = ClassInfo.pc_cid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3797
  iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3798
  iaLimits.minPrio = -iaLimits.maxPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3799
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3800
  strcpy(ClassInfo.pc_clname, "RT");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3801
  ClassInfo.pc_cid = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3802
  rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3803
  if (rslt < 0) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3804
  assert(ClassInfo.pc_cid != -1, "cid for RT class is -1");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3805
  rtLimits.schedPolicy = ClassInfo.pc_cid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3806
  rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3807
  rtLimits.minPrio = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3808
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3809
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3810
  // Query our "current" scheduling class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3811
  // This will normally be IA,TS or, rarely, RT.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3812
  memset (&ParmInfo, 0, sizeof(ParmInfo));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3813
  ParmInfo.pc_cid = PC_CLNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3814
  rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3815
  if ( rslt < 0 ) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3816
  myClass = ParmInfo.pc_cid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3817
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3818
  // We now know our scheduling classId, get specific information
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3819
  // the class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3820
  ClassInfo.pc_cid = myClass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3821
  ClassInfo.pc_clname[0] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3822
  rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3823
  if ( rslt < 0 ) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3824
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3825
  if (ThreadPriorityVerbose)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3826
    tty->print_cr ("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3827
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3828
  memset(&ParmInfo, 0, sizeof(pcparms_t));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3829
  ParmInfo.pc_cid = PC_CLNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3830
  rslt = (*priocntl_ptr)(PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3831
  if (rslt < 0) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3832
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3833
  if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3834
    myMin = rtLimits.minPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3835
    myMax = rtLimits.maxPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3836
  } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3837
    iaparms_t *iaInfo  = (iaparms_t*)ParmInfo.pc_clparms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3838
    myMin = iaLimits.minPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3839
    myMax = iaLimits.maxPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3840
    myMax = MIN2(myMax, (int)iaInfo->ia_uprilim);       // clamp - restrict
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3841
  } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3842
    tsparms_t *tsInfo  = (tsparms_t*)ParmInfo.pc_clparms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3843
    myMin = tsLimits.minPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3844
    myMax = tsLimits.maxPrio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3845
    myMax = MIN2(myMax, (int)tsInfo->ts_uprilim);       // clamp - restrict
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3846
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3847
    // No clue - punt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3848
    if (ThreadPriorityVerbose)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3849
      tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3850
    return EINVAL;      // no clue, punt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3851
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3852
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3853
  if (ThreadPriorityVerbose)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3854
        tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3855
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3856
  priocntl_enable = true;  // Enable changing priorities
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3857
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3858
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3859
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3860
#define IAPRI(x)        ((iaparms_t *)((x).pc_clparms))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3861
#define RTPRI(x)        ((rtparms_t *)((x).pc_clparms))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3862
#define TSPRI(x)        ((tsparms_t *)((x).pc_clparms))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3863
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3864
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3865
// scale_to_lwp_priority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3866
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3867
// Convert from the libthread "thr_setprio" scale to our current
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3868
// lwp scheduling class scale.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3869
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3870
static
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3871
int     scale_to_lwp_priority (int rMin, int rMax, int x)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3872
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3873
  int v;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3874
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3875
  if (x == 127) return rMax;            // avoid round-down
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3876
    v = (((x*(rMax-rMin)))/128)+rMin;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3877
  return v;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3878
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3879
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3880
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3881
// set_lwp_priority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3882
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3883
// Set the priority of the lwp.  This call should only be made
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3884
// when using bound threads (T2 threads are bound by default).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3885
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3886
int     set_lwp_priority (int ThreadID, int lwpid, int newPrio )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3887
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3888
  int rslt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3889
  int Actual, Expected, prv;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3890
  pcparms_t ParmInfo;                   // for GET-SET
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3891
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3892
  pcparms_t ReadBack;                   // for readback
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3893
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3894
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3895
  // Set priority via PC_GETPARMS, update, PC_SETPARMS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3896
  // Query current values.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3897
  // TODO: accelerate this by eliminating the PC_GETPARMS call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3898
  // Cache "pcparms_t" in global ParmCache.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3899
  // TODO: elide set-to-same-value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3900
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3901
  // If something went wrong on init, don't change priorities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3902
  if ( !priocntl_enable ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3903
    if (ThreadPriorityVerbose)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3904
      tty->print_cr("Trying to set priority but init failed, ignoring");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3905
    return EINVAL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3906
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3907
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3908
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3909
  // If lwp hasn't started yet, just return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3910
  // the _start routine will call us again.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3911
  if ( lwpid <= 0 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3912
    if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3913
      tty->print_cr ("deferring the set_lwp_priority of thread " INTPTR_FORMAT " to %d, lwpid not set",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3914
                     ThreadID, newPrio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3915
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3916
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3917
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3918
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3919
  if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3920
    tty->print_cr ("set_lwp_priority(" INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3921
                   ThreadID, lwpid, newPrio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3922
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3923
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3924
  memset(&ParmInfo, 0, sizeof(pcparms_t));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3925
  ParmInfo.pc_cid = PC_CLNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3926
  rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3927
  if (rslt < 0) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3928
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3929
  if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3930
    rtparms_t *rtInfo  = (rtparms_t*)ParmInfo.pc_clparms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3931
    rtInfo->rt_pri     = scale_to_lwp_priority (rtLimits.minPrio, rtLimits.maxPrio, newPrio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3932
    rtInfo->rt_tqsecs  = RT_NOCHANGE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3933
    rtInfo->rt_tqnsecs = RT_NOCHANGE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3934
    if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3935
      tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3936
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3937
  } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3938
    iaparms_t *iaInfo  = (iaparms_t*)ParmInfo.pc_clparms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3939
    int maxClamped     = MIN2(iaLimits.maxPrio, (int)iaInfo->ia_uprilim);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3940
    iaInfo->ia_upri    = scale_to_lwp_priority(iaLimits.minPrio, maxClamped, newPrio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3941
    iaInfo->ia_uprilim = IA_NOCHANGE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3942
    iaInfo->ia_mode    = IA_NOCHANGE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3943
    if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3944
      tty->print_cr ("IA: [%d...%d] %d->%d\n",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3945
               iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3946
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3947
  } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3948
    tsparms_t *tsInfo  = (tsparms_t*)ParmInfo.pc_clparms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3949
    int maxClamped     = MIN2(tsLimits.maxPrio, (int)tsInfo->ts_uprilim);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3950
    prv                = tsInfo->ts_upri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3951
    tsInfo->ts_upri    = scale_to_lwp_priority(tsLimits.minPrio, maxClamped, newPrio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3952
    tsInfo->ts_uprilim = IA_NOCHANGE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3953
    if (ThreadPriorityVerbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3954
      tty->print_cr ("TS: %d [%d...%d] %d->%d\n",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3955
               prv, tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3956
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3957
    if (prv == tsInfo->ts_upri) return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3958
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3959
    if ( ThreadPriorityVerbose ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3960
      tty->print_cr ("Unknown scheduling class\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3961
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3962
      return EINVAL;    // no clue, punt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3963
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3964
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3965
  rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3966
  if (ThreadPriorityVerbose && rslt) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3967
    tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3968
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3969
  if (rslt < 0) return errno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3970
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3971
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3972
  // Sanity check: read back what we just attempted to set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3973
  // In theory it could have changed in the interim ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3974
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3975
  // The priocntl system call is tricky.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3976
  // Sometimes it'll validate the priority value argument and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3977
  // return EINVAL if unhappy.  At other times it fails silently.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3978
  // Readbacks are prudent.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3979
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3980
  if (!ReadBackValidate) return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3981
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3982
  memset(&ReadBack, 0, sizeof(pcparms_t));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3983
  ReadBack.pc_cid = PC_CLNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3984
  rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3985
  assert(rslt >= 0, "priocntl failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3986
  Actual = Expected = 0xBAD;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3987
  assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3988
  if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3989
    Actual   = RTPRI(ReadBack)->rt_pri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3990
    Expected = RTPRI(ParmInfo)->rt_pri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3991
  } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3992
    Actual   = IAPRI(ReadBack)->ia_upri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3993
    Expected = IAPRI(ParmInfo)->ia_upri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3994
  } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3995
    Actual   = TSPRI(ReadBack)->ts_upri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3996
    Expected = TSPRI(ParmInfo)->ts_upri;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3997
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3998
    if ( ThreadPriorityVerbose ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3999
      tty->print_cr("set_lwp_priority: unexpected class in readback: %d\n", ParmInfo.pc_cid);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4000
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4001
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4002
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4003
  if (Actual != Expected) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4004
    if ( ThreadPriorityVerbose ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4005
      tty->print_cr ("set_lwp_priority(%d %d) Class=%d: actual=%d vs expected=%d\n",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4006
             lwpid, newPrio, ReadBack.pc_cid, Actual, Expected);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4007
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4008
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4009
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4010
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4011
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4012
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4015
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4016
// Solaris only gives access to 128 real priorities at a time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4017
// so we expand Java's ten to fill this range.  This would be better
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4018
// if we dynamically adjusted relative priorities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4019
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4020
// The ThreadPriorityPolicy option allows us to select 2 different
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4021
// priority scales.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4022
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4023
// ThreadPriorityPolicy=0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4024
// Since the Solaris' default priority is MaximumPriority, we do not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4025
// set a priority lower than Max unless a priority lower than
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4026
// NormPriority is requested.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4027
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4028
// ThreadPriorityPolicy=1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4029
// This mode causes the priority table to get filled with
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4030
// linear values.  NormPriority get's mapped to 50% of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4031
// Maximum priority an so on.  This will cause VM threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4032
// to get unfair treatment against other Solaris processes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4033
// which do not explicitly alter their thread priorities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4034
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4035
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4036
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4037
int os::java_to_os_priority[MaxPriority + 1] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4038
  -99999,         // 0 Entry should never be used
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4039
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4040
  0,              // 1 MinPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4041
  32,             // 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4042
  64,             // 3
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4043
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4044
  96,             // 4
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4045
  127,            // 5 NormPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4046
  127,            // 6
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4047
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4048
  127,            // 7
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4049
  127,            // 8
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4050
  127,            // 9 NearMaxPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4052
  127             // 10 MaxPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4053
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4054
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4055
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4056
OSReturn os::set_native_priority(Thread* thread, int newpri) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4057
  assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4058
  if ( !UseThreadPriorities ) return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4059
  int status = thr_setprio(thread->osthread()->thread_id(), newpri);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4060
  if ( os::Solaris::T2_libthread() || (UseBoundThreads && thread->osthread()->is_vm_created()) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4061
    status |= (set_lwp_priority (thread->osthread()->thread_id(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4062
                    thread->osthread()->lwp_id(), newpri ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4063
  return (status == 0) ? OS_OK : OS_ERR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4064
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4066
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4067
OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4068
  int p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4069
  if ( !UseThreadPriorities ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4070
    *priority_ptr = NormalPriority;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4071
    return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4072
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4073
  int status = thr_getprio(thread->osthread()->thread_id(), &p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4074
  if (status != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4075
    return OS_ERR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4076
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4077
  *priority_ptr = p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4078
  return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4079
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4080
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4081
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4082
// Hint to the underlying OS that a task switch would not be good.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4083
// Void return because it's a hint and can fail.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4084
void os::hint_no_preempt() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4085
  schedctl_start(schedctl_init());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4086
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4087
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4088
void os::interrupt(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4089
  assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4091
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4092
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4093
  int isInterrupted = osthread->interrupted();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4094
  if (!isInterrupted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4095
      osthread->set_interrupted(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4096
      OrderAccess::fence();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4097
      // os::sleep() is implemented with either poll (NULL,0,timeout) or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4098
      // by parking on _SleepEvent.  If the former, thr_kill will unwedge
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4099
      // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4100
      ParkEvent * const slp = thread->_SleepEvent ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4101
      if (slp != NULL) slp->unpark() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4102
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4103
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4104
  // For JSR166:  unpark after setting status but before thr_kill -dl
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4105
  if (thread->is_Java_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4106
    ((JavaThread*)thread)->parker()->unpark();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4107
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4109
  // Handle interruptible wait() ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4110
  ParkEvent * const ev = thread->_ParkEvent ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4111
  if (ev != NULL) ev->unpark() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4113
  // When events are used everywhere for os::sleep, then this thr_kill
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4114
  // will only be needed if UseVMInterruptibleIO is true.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4115
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4116
  if (!isInterrupted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4117
    int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4118
    assert_status(status == 0, status, "thr_kill");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4119
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4120
    // Bump thread interruption counter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4121
    RuntimeService::record_thread_interrupt_signaled_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4122
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4123
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4124
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4125
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4126
bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4127
  assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4128
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4129
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4130
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4131
  bool res = osthread->interrupted();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4132
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4133
  // NOTE that since there is no "lock" around these two operations,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4134
  // there is the possibility that the interrupted flag will be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4135
  // "false" but that the interrupt event will be set. This is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4136
  // intentional. The effect of this is that Object.wait() will appear
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4137
  // to have a spurious wakeup, which is not harmful, and the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4138
  // possibility is so rare that it is not worth the added complexity
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4139
  // to add yet another lock. It has also been recommended not to put
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4140
  // the interrupted flag into the os::Solaris::Event structure,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4141
  // because it hides the issue.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4142
  if (res && clear_interrupted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4143
    osthread->set_interrupted(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4144
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4145
  return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4146
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4147
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4149
void os::print_statistics() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4150
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4151
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4152
int os::message_box(const char* title, const char* message) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4153
  int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4154
  fdStream err(defaultStream::error_fd());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4155
  for (i = 0; i < 78; i++) err.print_raw("=");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4156
  err.cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4157
  err.print_raw_cr(title);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4158
  for (i = 0; i < 78; i++) err.print_raw("-");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4159
  err.cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4160
  err.print_raw_cr(message);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4161
  for (i = 0; i < 78; i++) err.print_raw("=");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4162
  err.cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4163
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4164
  char buf[16];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4165
  // Prevent process from exiting upon "read error" without consuming all CPU
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4166
  while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4167
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4168
  return buf[0] == 'y' || buf[0] == 'Y';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4169
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4170
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4171
// A lightweight implementation that does not suspend the target thread and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4172
// thus returns only a hint. Used for profiling only!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4173
ExtendedPC os::get_thread_pc(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4174
  // Make sure that it is called by the watcher and the Threads lock is owned.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4175
  assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4176
  // For now, is only used to profile the VM Thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4177
  assert(thread->is_VM_thread(), "Can only be called for VMThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4178
  ExtendedPC epc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4179
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4180
  GetThreadPC_Callback  cb(ProfileVM_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4181
  OSThread *osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4182
  const int time_to_wait = 400; // 400ms wait for initial response
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4183
  int status = cb.interrupt(thread, time_to_wait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4184
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4185
  if (cb.is_done() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4186
    epc = cb.addr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4187
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4188
    DEBUG_ONLY(tty->print_cr("Failed to get pc for thread: %d got %d status",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4189
                              osthread->thread_id(), status););
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4190
    // epc is already NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4191
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4192
  return epc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4193
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4194
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4195
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4196
// This does not do anything on Solaris. This is basically a hook for being
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4197
// able to use structured exception handling (thread-local exception filters) on, e.g., Win32.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4198
void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4199
  f(value, method, args, thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4200
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4201
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4202
// This routine may be used by user applications as a "hook" to catch signals.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4203
// The user-defined signal handler must pass unrecognized signals to this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4204
// routine, and if it returns true (non-zero), then the signal handler must
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4205
// return immediately.  If the flag "abort_if_unrecognized" is true, then this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4206
// routine will never retun false (zero), but instead will execute a VM panic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4207
// routine kill the process.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4208
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4209
// If this routine returns false, it is OK to call it again.  This allows
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4210
// the user-defined signal handler to perform checks either before or after
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4211
// the VM performs its own checks.  Naturally, the user code would be making
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4212
// a serious error if it tried to handle an exception (such as a null check
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4213
// or breakpoint) that the VM was generating for its own correct operation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4214
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4215
// This routine may recognize any of the following kinds of signals:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4216
// SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4217
// os::Solaris::SIGasync
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4218
// It should be consulted by handlers for any of those signals.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4219
// It explicitly does not recognize os::Solaris::SIGinterrupt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4220
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4221
// The caller of this routine must pass in the three arguments supplied
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4222
// to the function referred to in the "sa_sigaction" (not the "sa_handler")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4223
// field of the structure passed to sigaction().  This routine assumes that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4224
// the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4225
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4226
// Note that the VM will print warnings if it detects conflicting signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4227
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4228
//
8106
19106a0203fb 6588413: Use -fvisibility=hidden for gcc compiles
coleenp
parents: 7901
diff changeset
  4229
extern "C" JNIEXPORT int
19106a0203fb 6588413: Use -fvisibility=hidden for gcc compiles
coleenp
parents: 7901
diff changeset
  4230
JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext,
19106a0203fb 6588413: Use -fvisibility=hidden for gcc compiles
coleenp
parents: 7901
diff changeset
  4231
                          int abort_if_unrecognized);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4232
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4233
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4234
void signalHandler(int sig, siginfo_t* info, void* ucVoid) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4235
  JVM_handle_solaris_signal(sig, info, ucVoid, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4236
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4237
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4238
/* Do not delete - if guarantee is ever removed,  a signal handler (even empty)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4239
   is needed to provoke threads blocked on IO to return an EINTR
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4240
   Note: this explicitly does NOT call JVM_handle_solaris_signal and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4241
   does NOT participate in signal chaining due to requirement for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4242
   NOT setting SA_RESTART to make EINTR work. */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4243
extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4244
   if (UseSignalChaining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4245
      struct sigaction *actp = os::Solaris::get_chained_signal_action(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4246
      if (actp && actp->sa_handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4247
        vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4248
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4249
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4250
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4251
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4252
// This boolean allows users to forward their own non-matching signals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4253
// to JVM_handle_solaris_signal, harmlessly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4254
bool os::Solaris::signal_handlers_are_installed = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4255
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4256
// For signal-chaining
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4257
bool os::Solaris::libjsig_is_loaded = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4258
typedef struct sigaction *(*get_signal_t)(int);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4259
get_signal_t os::Solaris::get_signal_action = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4260
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4261
struct sigaction* os::Solaris::get_chained_signal_action(int sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4262
  struct sigaction *actp = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4263
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4264
  if ((libjsig_is_loaded)  && (sig <= Maxlibjsigsigs)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4265
    // Retrieve the old signal handler from libjsig
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4266
    actp = (*get_signal_action)(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4267
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4268
  if (actp == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4269
    // Retrieve the preinstalled signal handler from jvm
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4270
    actp = get_preinstalled_handler(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4271
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4272
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4273
  return actp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4274
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4275
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4276
static bool call_chained_handler(struct sigaction *actp, int sig,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4277
                                 siginfo_t *siginfo, void *context) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4278
  // Call the old signal handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4279
  if (actp->sa_handler == SIG_DFL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4280
    // It's more reasonable to let jvm treat it as an unexpected exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4281
    // instead of taking the default action.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4282
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4283
  } else if (actp->sa_handler != SIG_IGN) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4284
    if ((actp->sa_flags & SA_NODEFER) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4285
      // automaticlly block the signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4286
      sigaddset(&(actp->sa_mask), sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4287
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4288
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4289
    sa_handler_t hand;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4290
    sa_sigaction_t sa;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4291
    bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4292
    // retrieve the chained handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4293
    if (siginfo_flag_set) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4294
      sa = actp->sa_sigaction;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4295
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4296
      hand = actp->sa_handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4297
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4298
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4299
    if ((actp->sa_flags & SA_RESETHAND) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4300
      actp->sa_handler = SIG_DFL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4301
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4302
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4303
    // try to honor the signal mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4304
    sigset_t oset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4305
    thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4306
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4307
    // call into the chained handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4308
    if (siginfo_flag_set) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4309
      (*sa)(sig, siginfo, context);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4310
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4311
      (*hand)(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4312
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4313
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4314
    // restore the signal mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4315
    thr_sigsetmask(SIG_SETMASK, &oset, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4316
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4317
  // Tell jvm's signal handler the signal is taken care of.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4318
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4319
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4320
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4321
bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4322
  bool chained = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4323
  // signal-chaining
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4324
  if (UseSignalChaining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4325
    struct sigaction *actp = get_chained_signal_action(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4326
    if (actp != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4327
      chained = call_chained_handler(actp, sig, siginfo, context);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4328
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4329
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4330
  return chained;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4331
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4332
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4333
struct sigaction* os::Solaris::get_preinstalled_handler(int sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4334
  assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4335
  if (preinstalled_sigs[sig] != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4336
    return &chainedsigactions[sig];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4337
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4338
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4339
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4340
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4341
void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4342
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4343
  assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4344
  assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4345
  chainedsigactions[sig] = oldAct;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4346
  preinstalled_sigs[sig] = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4347
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4348
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4349
void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4350
  // Check for overwrite.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4351
  struct sigaction oldAct;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4352
  sigaction(sig, (struct sigaction*)NULL, &oldAct);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4353
  void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*,  oldAct.sa_sigaction)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4354
                                      : CAST_FROM_FN_PTR(void*,  oldAct.sa_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4355
  if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4356
      oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4357
      oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4358
    if (AllowUserSignalHandlers || !set_installed) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4359
      // Do not overwrite; user takes responsibility to forward to us.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4360
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4361
    } else if (UseSignalChaining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4362
      if (oktochain) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4363
        // save the old handler in jvm
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4364
        save_preinstalled_handler(sig, oldAct);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4365
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4366
        vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4367
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4368
      // libjsig also interposes the sigaction() call below and saves the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4369
      // old sigaction on it own.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4370
    } else {
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  4371
      fatal(err_msg("Encountered unexpected pre-existing sigaction handler "
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  4372
                    "%#lx for signal %d.", (long)oldhand, sig));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4373
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4374
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4375
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4376
  struct sigaction sigAct;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4377
  sigfillset(&(sigAct.sa_mask));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4378
  sigAct.sa_handler = SIG_DFL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4379
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4380
  sigAct.sa_sigaction = signalHandler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4381
  // Handle SIGSEGV on alternate signal stack if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4382
  // not using stack banging
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4383
  if (!UseStackBanging && sig == SIGSEGV) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4384
    sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4385
  // Interruptible i/o requires SA_RESTART cleared so EINTR
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4386
  // is returned instead of restarting system calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4387
  } else if (sig == os::Solaris::SIGinterrupt()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4388
    sigemptyset(&sigAct.sa_mask);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4389
    sigAct.sa_handler = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4390
    sigAct.sa_flags = SA_SIGINFO;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4391
    sigAct.sa_sigaction = sigINTRHandler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4392
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4393
    sigAct.sa_flags = SA_SIGINFO | SA_RESTART;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4394
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4395
  os::Solaris::set_our_sigflags(sig, sigAct.sa_flags);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4396
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4397
  sigaction(sig, &sigAct, &oldAct);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4398
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4399
  void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4400
                                       : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4401
  assert(oldhand2 == oldhand, "no concurrent signal handler installation");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4402
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4403
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4404
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4405
#define DO_SIGNAL_CHECK(sig) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4406
  if (!sigismember(&check_signal_done, sig)) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4407
    os::Solaris::check_signal_handler(sig)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4408
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4409
// This method is a periodic task to check for misbehaving JNI applications
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4410
// under CheckJNI, we can add any periodic checks here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4411
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4412
void os::run_periodic_checks() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4413
  // A big source of grief is hijacking virt. addr 0x0 on Solaris,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4414
  // thereby preventing a NULL checks.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4415
  if(!check_addr0_done) check_addr0_done = check_addr0(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4416
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4417
  if (check_signals == false) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4418
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4419
  // SEGV and BUS if overridden could potentially prevent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4420
  // generation of hs*.log in the event of a crash, debugging
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4421
  // such a case can be very challenging, so we absolutely
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4422
  // check for the following for a good measure:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4423
  DO_SIGNAL_CHECK(SIGSEGV);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4424
  DO_SIGNAL_CHECK(SIGILL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4425
  DO_SIGNAL_CHECK(SIGFPE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4426
  DO_SIGNAL_CHECK(SIGBUS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4427
  DO_SIGNAL_CHECK(SIGPIPE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4428
  DO_SIGNAL_CHECK(SIGXFSZ);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4429
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4430
  // ReduceSignalUsage allows the user to override these handlers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4431
  // see comments at the very top and jvm_solaris.h
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4432
  if (!ReduceSignalUsage) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4433
    DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4434
    DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4435
    DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4436
    DO_SIGNAL_CHECK(BREAK_SIGNAL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4437
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4438
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4439
  // See comments above for using JVM1/JVM2 and UseAltSigs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4440
  DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4441
  DO_SIGNAL_CHECK(os::Solaris::SIGasync());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4442
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4443
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4444
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4445
typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4446
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4447
static os_sigaction_t os_sigaction = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4448
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4449
void os::Solaris::check_signal_handler(int sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4450
  char buf[O_BUFLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4451
  address jvmHandler = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4452
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4453
  struct sigaction act;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4454
  if (os_sigaction == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4455
    // only trust the default sigaction, in case it has been interposed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4456
    os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4457
    if (os_sigaction == NULL) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4458
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4459
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4460
  os_sigaction(sig, (struct sigaction*)NULL, &act);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4461
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4462
  address thisHandler = (act.sa_flags & SA_SIGINFO)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4463
    ? CAST_FROM_FN_PTR(address, act.sa_sigaction)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4464
    : CAST_FROM_FN_PTR(address, act.sa_handler) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4465
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4466
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4467
  switch(sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4468
    case SIGSEGV:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4469
    case SIGBUS:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4470
    case SIGFPE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4471
    case SIGPIPE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4472
    case SIGXFSZ:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4473
    case SIGILL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4474
      jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4475
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4476
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4477
    case SHUTDOWN1_SIGNAL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4478
    case SHUTDOWN2_SIGNAL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4479
    case SHUTDOWN3_SIGNAL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4480
    case BREAK_SIGNAL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4481
      jvmHandler = (address)user_handler();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4482
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4483
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4484
    default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4485
      int intrsig = os::Solaris::SIGinterrupt();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4486
      int asynsig = os::Solaris::SIGasync();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4487
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4488
      if (sig == intrsig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4489
        jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4490
      } else if (sig == asynsig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4491
        jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4492
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4493
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4494
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4495
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4496
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4497
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4498
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4499
  if (thisHandler != jvmHandler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4500
    tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4501
    tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4502
    tty->print_cr("  found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4503
    // No need to check this sig any longer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4504
    sigaddset(&check_signal_done, sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4505
  } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4506
    tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4507
    tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4508
    tty->print_cr("  found:" PTR32_FORMAT, act.sa_flags);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4509
    // No need to check this sig any longer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4510
    sigaddset(&check_signal_done, sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4511
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4512
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4513
  // Print all the signal handler state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4514
  if (sigismember(&check_signal_done, sig)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4515
    print_signal_handlers(tty, buf, O_BUFLEN);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4516
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4517
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4518
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4519
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4520
void os::Solaris::install_signal_handlers() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4521
  bool libjsigdone = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4522
  signal_handlers_are_installed = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4523
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4524
  // signal-chaining
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4525
  typedef void (*signal_setting_t)();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4526
  signal_setting_t begin_signal_setting = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4527
  signal_setting_t end_signal_setting = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4528
  begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4529
                                        dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4530
  if (begin_signal_setting != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4531
    end_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4532
                                        dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4533
    get_signal_action = CAST_TO_FN_PTR(get_signal_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4534
                                       dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4535
    get_libjsig_version = CAST_TO_FN_PTR(version_getting_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4536
                                         dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4537
    libjsig_is_loaded = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4538
    if (os::Solaris::get_libjsig_version != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4539
      libjsigversion =  (*os::Solaris::get_libjsig_version)();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4540
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4541
    assert(UseSignalChaining, "should enable signal-chaining");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4542
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4543
  if (libjsig_is_loaded) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4544
    // Tell libjsig jvm is setting signal handlers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4545
    (*begin_signal_setting)();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4546
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4547
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4548
  set_signal_handler(SIGSEGV, true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4549
  set_signal_handler(SIGPIPE, true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4550
  set_signal_handler(SIGXFSZ, true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4551
  set_signal_handler(SIGBUS, true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4552
  set_signal_handler(SIGILL, true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4553
  set_signal_handler(SIGFPE, true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4554
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4555
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4556
  if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4557
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4558
    // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4559
    // can not register overridable signals which might be > 32
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4560
    if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4561
    // Tell libjsig jvm has finished setting signal handlers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4562
      (*end_signal_setting)();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4563
      libjsigdone = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4564
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4565
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4566
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4567
  // Never ok to chain our SIGinterrupt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4568
  set_signal_handler(os::Solaris::SIGinterrupt(), true, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4569
  set_signal_handler(os::Solaris::SIGasync(), true, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4570
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4571
  if (libjsig_is_loaded && !libjsigdone) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4572
    // Tell libjsig jvm finishes setting signal handlers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4573
    (*end_signal_setting)();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4574
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4575
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4576
  // We don't activate signal checker if libjsig is in place, we trust ourselves
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4577
  // and if UserSignalHandler is installed all bets are off
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4578
  if (CheckJNICalls) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4579
    if (libjsig_is_loaded) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4580
      tty->print_cr("Info: libjsig is activated, all active signal checking is disabled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4581
      check_signals = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4582
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4583
    if (AllowUserSignalHandlers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4584
      tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4585
      check_signals = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4586
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4587
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4588
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4589
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4590
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4591
void report_error(const char* file_name, int line_no, const char* title, const char* format, ...);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4592
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4593
const char * signames[] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4594
  "SIG0",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4595
  "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4596
  "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4597
  "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4598
  "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4599
  "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4600
  "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4601
  "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4602
  "SIGCANCEL", "SIGLOST"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4603
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4605
const char* os::exception_name(int exception_code, char* buf, size_t size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4606
  if (0 < exception_code && exception_code <= SIGRTMAX) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4607
    // signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4608
    if (exception_code < sizeof(signames)/sizeof(const char*)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4609
       jio_snprintf(buf, size, "%s", signames[exception_code]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4610
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4611
       jio_snprintf(buf, size, "SIG%d", exception_code);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4612
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4613
    return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4614
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4615
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4616
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4617
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4618
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4619
// (Static) wrappers for the new libthread API
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4620
int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4621
int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4622
int_fnP_thread_t_i os::Solaris::_thr_setmutator;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4623
int_fnP_thread_t os::Solaris::_thr_suspend_mutator;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4624
int_fnP_thread_t os::Solaris::_thr_continue_mutator;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4625
2253
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4626
// (Static) wrapper for getisax(2) call.
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4627
os::Solaris::getisax_func_t os::Solaris::_getisax = 0;
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4628
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4629
// (Static) wrappers for the liblgrp API
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4630
os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4631
os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4632
os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4633
os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4634
os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children;
391
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  4635
os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4636
os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4637
os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4638
os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4640
// (Static) wrapper for meminfo() call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4641
os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4642
2253
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4643
static address resolve_symbol_lazy(const char* name) {
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4644
  address addr = (address) dlsym(RTLD_DEFAULT, name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4645
  if(addr == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4646
    // RTLD_DEFAULT was not defined on some early versions of 2.5.1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4647
    addr = (address) dlsym(RTLD_NEXT, name);
2253
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4648
  }
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4649
  return addr;
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4650
}
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4651
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4652
static address resolve_symbol(const char* name) {
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4653
  address addr = resolve_symbol_lazy(name);
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4654
  if(addr == NULL) {
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4655
    fatal(dlerror());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4656
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4657
  return addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4658
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4659
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4660
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4661
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4662
// isT2_libthread()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4663
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4664
// Routine to determine if we are currently using the new T2 libthread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4665
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4666
// We determine if we are using T2 by reading /proc/self/lstatus and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4667
// looking for a thread with the ASLWP bit set.  If we find this status
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4668
// bit set, we must assume that we are NOT using T2.  The T2 team
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4669
// has approved this algorithm.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4670
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4671
// We need to determine if we are running with the new T2 libthread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4672
// since setting native thread priorities is handled differently
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4673
// when using this library.  All threads created using T2 are bound
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4674
// threads. Calling thr_setprio is meaningless in this case.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4675
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4676
bool isT2_libthread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4677
  static prheader_t * lwpArray = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4678
  static int lwpSize = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4679
  static int lwpFile = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4680
  lwpstatus_t * that;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4681
  char lwpName [128];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4682
  bool isT2 = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4683
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4684
#define ADR(x)  ((uintptr_t)(x))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4685
#define LWPINDEX(ary,ix)   ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1))))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4686
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  4687
  lwpFile = ::open("/proc/self/lstatus", O_RDONLY, 0);
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4688
  if (lwpFile < 0) {
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4689
      if (ThreadPriorityVerbose) warning ("Couldn't open /proc/self/lstatus\n");
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4690
      return false;
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4691
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4692
  lwpSize = 16*1024;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4693
  for (;;) {
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  4694
    ::lseek64 (lwpFile, 0, SEEK_SET);
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4695
    lwpArray = (prheader_t *)NEW_C_HEAP_ARRAY(char, lwpSize);
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  4696
    if (::read(lwpFile, lwpArray, lwpSize) < 0) {
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4697
      if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4698
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4699
    }
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4700
    if ((lwpArray->pr_nent * lwpArray->pr_entsize) <= lwpSize) {
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4701
       // We got a good snapshot - now iterate over the list.
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4702
      int aslwpcount = 0;
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4703
      for (int i = 0; i < lwpArray->pr_nent; i++ ) {
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4704
        that = LWPINDEX(lwpArray,i);
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4705
        if (that->pr_flags & PR_ASLWP) {
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4706
          aslwpcount++;
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4707
        }
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4708
      }
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4709
      if (aslwpcount == 0) isT2 = true;
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4710
      break;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4711
    }
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4712
    lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize;
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4713
    FREE_C_HEAP_ARRAY(char, lwpArray);  // retry.
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4714
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4715
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4716
  FREE_C_HEAP_ARRAY(char, lwpArray);
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  4717
  ::close (lwpFile);
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4718
  if (ThreadPriorityVerbose) {
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4719
    if (isT2) tty->print_cr("We are running with a T2 libthread\n");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4720
    else tty->print_cr("We are not running with a T2 libthread\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4721
  }
336
53887b25f9ae 6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents: 252
diff changeset
  4722
  return isT2;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4723
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4724
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4725
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4726
void os::Solaris::libthread_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4727
  address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4728
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4729
  // Determine if we are running with the new T2 libthread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4730
  os::Solaris::set_T2_libthread(isT2_libthread());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4731
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4732
  lwp_priocntl_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4733
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4734
  // RTLD_DEFAULT was not defined on some early versions of 5.5.1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4735
  if(func == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4736
    func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4737
    // Guarantee that this VM is running on an new enough OS (5.6 or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4738
    // later) that it will have a new enough libthread.so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4739
    guarantee(func != NULL, "libthread.so is too old.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4740
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4741
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4742
  // Initialize the new libthread getstate API wrappers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4743
  func = resolve_symbol("thr_getstate");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4744
  os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4745
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4746
  func = resolve_symbol("thr_setstate");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4747
  os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4748
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4749
  func = resolve_symbol("thr_setmutator");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4750
  os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4751
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4752
  func = resolve_symbol("thr_suspend_mutator");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4753
  os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4754
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4755
  func = resolve_symbol("thr_continue_mutator");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4756
  os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4758
  int size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4759
  void (*handler_info_func)(address *, int *);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4760
  handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4761
  handler_info_func(&handler_start, &size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4762
  handler_end = handler_start + size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4763
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4764
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4765
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4766
int_fnP_mutex_tP os::Solaris::_mutex_lock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4767
int_fnP_mutex_tP os::Solaris::_mutex_trylock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4768
int_fnP_mutex_tP os::Solaris::_mutex_unlock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4769
int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4770
int_fnP_mutex_tP os::Solaris::_mutex_destroy;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4771
int os::Solaris::_mutex_scope = USYNC_THREAD;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4772
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4773
int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4774
int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4775
int_fnP_cond_tP os::Solaris::_cond_signal;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4776
int_fnP_cond_tP os::Solaris::_cond_broadcast;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4777
int_fnP_cond_tP_i_vP os::Solaris::_cond_init;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4778
int_fnP_cond_tP os::Solaris::_cond_destroy;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4779
int os::Solaris::_cond_scope = USYNC_THREAD;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4780
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4781
void os::Solaris::synchronization_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4782
  if(UseLWPSynchronization) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4783
    os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4784
    os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4785
    os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4786
    os::Solaris::set_mutex_init(lwp_mutex_init);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4787
    os::Solaris::set_mutex_destroy(lwp_mutex_destroy);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4788
    os::Solaris::set_mutex_scope(USYNC_THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4789
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4790
    os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4791
    os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4792
    os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4793
    os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4794
    os::Solaris::set_cond_init(lwp_cond_init);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4795
    os::Solaris::set_cond_destroy(lwp_cond_destroy);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4796
    os::Solaris::set_cond_scope(USYNC_THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4797
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4798
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4799
    os::Solaris::set_mutex_scope(USYNC_THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4800
    os::Solaris::set_cond_scope(USYNC_THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4801
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4802
    if(UsePthreads) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4803
      os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4804
      os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4805
      os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4806
      os::Solaris::set_mutex_init(pthread_mutex_default_init);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4807
      os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4808
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4809
      os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4810
      os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4811
      os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4812
      os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4813
      os::Solaris::set_cond_init(pthread_cond_default_init);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4814
      os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4815
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4816
    else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4817
      os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4818
      os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4819
      os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4820
      os::Solaris::set_mutex_init(::mutex_init);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4821
      os::Solaris::set_mutex_destroy(::mutex_destroy);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4822
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4823
      os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4824
      os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4825
      os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4826
      os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4827
      os::Solaris::set_cond_init(::cond_init);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4828
      os::Solaris::set_cond_destroy(::cond_destroy);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4829
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4830
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4831
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4832
1615
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  4833
bool os::Solaris::liblgrp_init() {
975
ad7da100aa6a 6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents: 391
diff changeset
  4834
  void *handle = dlopen("liblgrp.so.1", RTLD_LAZY);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4835
  if (handle != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4836
    os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4837
    os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4838
    os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4839
    os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4840
    os::Solaris::set_lgrp_children(CAST_TO_FN_PTR(lgrp_children_func_t, dlsym(handle, "lgrp_children")));
391
f889070a8684 6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents: 388
diff changeset
  4841
    os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources")));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4842
    os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4843
    os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4844
                                       dlsym(handle, "lgrp_cookie_stale")));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4845
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4846
    lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4847
    set_lgrp_cookie(c);
1615
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  4848
    return true;
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  4849
  }
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  4850
  return false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4851
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4852
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4853
void os::Solaris::misc_sym_init() {
2253
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4854
  address func;
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4855
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4856
  // getisax
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4857
  func = resolve_symbol_lazy("getisax");
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4858
  if (func != NULL) {
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4859
    os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func);
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4860
  }
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4861
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4862
  // meminfo
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4863
  func = resolve_symbol_lazy("meminfo");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4864
  if (func != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4865
    os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4866
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4867
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4868
2253
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4869
uint_t os::Solaris::getisax(uint32_t* array, uint_t n) {
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4870
  assert(_getisax != NULL, "_getisax not set");
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4871
  return _getisax(array, n);
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4872
}
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4873
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4874
// Symbol doesn't exist in Solaris 8 pset.h
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4875
#ifndef PS_MYID
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4876
#define PS_MYID -3
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4877
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4878
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4879
// int pset_getloadavg(psetid_t pset, double loadavg[], int nelem);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4880
typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4881
static pset_getloadavg_type pset_getloadavg_ptr = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4882
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4883
void init_pset_getloadavg_ptr(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4884
  pset_getloadavg_ptr =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4885
    (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4886
  if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4887
    warning("pset_getloadavg function not found");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4888
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4889
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4890
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4891
int os::Solaris::_dev_zero_fd = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4892
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4893
// this is called _before_ the global arguments have been parsed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4894
void os::init(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4895
  _initial_pid = getpid();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4896
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4897
  max_hrtime = first_hrtime = gethrtime();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4898
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4899
  init_random(1234567);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4900
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4901
  page_size = sysconf(_SC_PAGESIZE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4902
  if (page_size == -1)
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  4903
    fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)",
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  4904
                  strerror(errno)));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4905
  init_page_sizes((size_t) page_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4906
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4907
  Solaris::initialize_system_info();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4908
2253
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4909
  // Initialize misc. symbols as soon as possible, so we can use them
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4910
  // if we need them.
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4911
  Solaris::misc_sym_init();
30268d00878e 6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents: 2012
diff changeset
  4912
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  4913
  int fd = ::open("/dev/zero", O_RDWR);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4914
  if (fd < 0) {
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5237
diff changeset
  4915
    fatal(err_msg("os::init: cannot open /dev/zero (%s)", strerror(errno)));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4916
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4917
    Solaris::set_dev_zero_fd(fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4918
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4919
    // Close on exec, child won't inherit.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4920
    fcntl(fd, F_SETFD, FD_CLOEXEC);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4921
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4922
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4923
  clock_tics_per_sec = CLK_TCK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4924
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4925
  // check if dladdr1() exists; dladdr1 can provide more information than
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4926
  // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4927
  // and is available on linker patches for 5.7 and 5.8.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4928
  // libdl.so must have been loaded, this call is just an entry lookup
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4929
  void * hdl = dlopen("libdl.so", RTLD_NOW);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4930
  if (hdl)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4931
    dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4932
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4933
  // (Solaris only) this switches to calls that actually do locking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4934
  ThreadCritical::initialize();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4935
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4936
  main_thread = thr_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4937
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4938
  // Constant minimum stack size allowed. It must be at least
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4939
  // the minimum of what the OS supports (thr_min_stack()), and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4940
  // enough to allow the thread to get to user bytecode execution.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4941
  Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4942
  // If the pagesize of the VM is greater than 8K determine the appropriate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4943
  // number of initial guard pages.  The user can change this with the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4944
  // command line arguments, if needed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4945
  if (vm_page_size() > 8*K) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4946
    StackYellowPages = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4947
    StackRedPages = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4948
    StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4949
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4950
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4951
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4952
// To install functions for atexit system call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4953
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4954
  static void perfMemory_exit_helper() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4955
    perfMemory_exit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4956
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4957
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4958
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4959
// this is called _after_ the global arguments have been parsed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4960
jint os::init_2(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4961
  // try to enable extended file IO ASAP, see 6431278
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4962
  os::Solaris::try_enable_extended_io();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4963
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4964
  // Allocate a single page and mark it as readable for safepoint polling.  Also
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4965
  // use this first mmap call to check support for MAP_ALIGN.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4966
  address polling_page = (address)Solaris::mmap_chunk((char*)page_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4967
                                                      page_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4968
                                                      MAP_PRIVATE | MAP_ALIGN,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4969
                                                      PROT_READ);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4970
  if (polling_page == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4971
    has_map_align = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4972
    polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4973
                                                PROT_READ);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4974
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4975
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4976
  os::set_polling_page(polling_page);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4977
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4978
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4979
  if( Verbose && PrintMiscellaneous )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4980
    tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4981
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4982
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4983
  if (!UseMembar) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4984
    address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4985
    guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4986
    os::set_memory_serialize_page( mem_serialize_page );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4987
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4988
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4989
    if(Verbose && PrintMiscellaneous)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4990
      tty->print("[Memory Serialize  Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4991
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4992
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4993
9419
f0360dfe734d 7040485: Use transparent huge page on linux by default
iveresov
parents: 9341
diff changeset
  4994
  os::large_page_init();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4995
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4996
  // Check minimum allowable stack size for thread creation and to initialize
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4997
  // the java system classes, including StackOverflowError - depends on page
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4998
  // size.  Add a page for compiler2 recursion in main thread.
6964
6e45ffa3bccf 6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents: 6962
diff changeset
  4999
  // Add in 2*BytesPerWord times page size to account for VM stack during
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5000
  // class initialization depending on 32 or 64 bit VM.
6964
6e45ffa3bccf 6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents: 6962
diff changeset
  5001
  os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed,
6e45ffa3bccf 6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents: 6962
diff changeset
  5002
            (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
6e45ffa3bccf 6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents: 6962
diff changeset
  5003
                    2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5004
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5005
  size_t threadStackSizeInBytes = ThreadStackSize * K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5006
  if (threadStackSizeInBytes != 0 &&
6964
6e45ffa3bccf 6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents: 6962
diff changeset
  5007
    threadStackSizeInBytes < os::Solaris::min_stack_allowed) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5008
    tty->print_cr("\nThe stack size specified is too small, Specify at least %dk",
6964
6e45ffa3bccf 6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents: 6962
diff changeset
  5009
                  os::Solaris::min_stack_allowed/K);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5010
    return JNI_ERR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5011
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5013
  // For 64kbps there will be a 64kb page size, which makes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5014
  // the usable default stack size quite a bit less.  Increase the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5015
  // stack for 64kb (or any > than 8kb) pages, this increases
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5016
  // virtual memory fragmentation (since we're not creating the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5017
  // stack on a power of 2 boundary.  The real fix for this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5018
  // should be to fix the guard page mechanism.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5020
  if (vm_page_size() > 8*K) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5021
      threadStackSizeInBytes = (threadStackSizeInBytes != 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5022
         ? threadStackSizeInBytes +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5023
           ((StackYellowPages + StackRedPages) * vm_page_size())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5024
         : 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5025
      ThreadStackSize = threadStackSizeInBytes/K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5026
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5028
  // Make the stack size a multiple of the page size so that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5029
  // the yellow/red zones can be guarded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5030
  JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5031
        vm_page_size()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5032
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5033
  Solaris::libthread_init();
1615
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5034
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5035
  if (UseNUMA) {
1615
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5036
    if (!Solaris::liblgrp_init()) {
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5037
      UseNUMA = false;
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5038
    } else {
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5039
      size_t lgrp_limit = os::numa_get_groups_num();
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5040
      int *lgrp_ids = NEW_C_HEAP_ARRAY(int, lgrp_limit);
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5041
      size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit);
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5042
      FREE_C_HEAP_ARRAY(int, lgrp_ids);
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5043
      if (lgrp_num < 2) {
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5044
        // There's only one locality group, disable NUMA.
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5045
        UseNUMA = false;
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5046
      }
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5047
    }
9341
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5048
    // ISM is not compatible with the NUMA allocator - it always allocates
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5049
    // pages round-robin across the lgroups.
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5050
    if (UseNUMA && UseLargePages && UseISM) {
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5051
      if (!FLAG_IS_DEFAULT(UseNUMA)) {
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5052
        if (FLAG_IS_DEFAULT(UseLargePages) && FLAG_IS_DEFAULT(UseISM)) {
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5053
          UseLargePages = false;
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5054
        } else {
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5055
          warning("UseNUMA is not compatible with ISM large pages, disabling NUMA allocator");
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5056
          UseNUMA = false;
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5057
        }
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5058
      } else {
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5059
        UseNUMA = false;
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5060
      }
347fa5cdbd39 7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents: 8478
diff changeset
  5061
    }
1615
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5062
    if (!UseNUMA && ForceNUMA) {
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5063
      UseNUMA = true;
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5064
    }
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5065
  }
b46d9f19bde2 6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents: 1558
diff changeset
  5066
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5067
  Solaris::signal_sets_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5068
  Solaris::init_signal_mem();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5069
  Solaris::install_signal_handlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5070
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5071
  if (libjsigversion < JSIG_VERSION_1_4_1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5072
    Maxlibjsigsigs = OLDMAXSIGNUM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5073
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5075
  // initialize synchronization primitives to use either thread or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5076
  // lwp synchronization (controlled by UseLWPSynchronization)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5077
  Solaris::synchronization_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5078
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5079
  if (MaxFDLimit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5080
    // set the number of file descriptors to max. print out error
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5081
    // if getrlimit/setrlimit fails but continue regardless.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5082
    struct rlimit nbr_files;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5083
    int status = getrlimit(RLIMIT_NOFILE, &nbr_files);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5084
    if (status != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5085
      if (PrintMiscellaneous && (Verbose || WizardMode))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5086
        perror("os::init_2 getrlimit failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5087
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5088
      nbr_files.rlim_cur = nbr_files.rlim_max;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5089
      status = setrlimit(RLIMIT_NOFILE, &nbr_files);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5090
      if (status != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5091
        if (PrintMiscellaneous && (Verbose || WizardMode))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5092
          perror("os::init_2 setrlimit failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5093
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5094
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5095
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5096
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5097
  // Calculate theoretical max. size of Threads to guard gainst
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5098
  // artifical out-of-memory situations, where all available address-
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5099
  // space has been reserved by thread stacks. Default stack size is 1Mb.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5100
  size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5101
    JavaThread::stack_size_at_create() : (1*K*K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5102
  assert(pre_thread_stack_size != 0, "Must have a stack");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5103
  // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5104
  // we should start doing Virtual Memory banging. Currently when the threads will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5105
  // have used all but 200Mb of space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5106
  size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5107
  Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5109
  // at-exit methods are called in the reverse order of their registration.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5110
  // In Solaris 7 and earlier, atexit functions are called on return from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5111
  // main or as a result of a call to exit(3C). There can be only 32 of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5112
  // these functions registered and atexit() does not set errno. In Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5113
  // 8 and later, there is no limit to the number of functions registered
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5114
  // and atexit() sets errno. In addition, in Solaris 8 and later, atexit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5115
  // functions are called upon dlclose(3DL) in addition to return from main
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5116
  // and exit(3C).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5117
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5118
  if (PerfAllowAtExitRegistration) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5119
    // only register atexit functions if PerfAllowAtExitRegistration is set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5120
    // atexit functions can be delayed until process exit time, which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5121
    // can be problematic for embedded VM situations. Embedded VMs should
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5122
    // call DestroyJavaVM() to assure that VM resources are released.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5124
    // note: perfMemory_exit_helper atexit function may be removed in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5125
    // the future if the appropriate cleanup code can be added to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5126
    // VM_Exit VMOperation's doit method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5127
    if (atexit(perfMemory_exit_helper) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5128
      warning("os::init2 atexit(perfMemory_exit_helper) failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5129
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5130
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5131
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5132
  // Init pset_loadavg function pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5133
  init_pset_getloadavg_ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5134
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5135
  return JNI_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5136
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5137
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5138
void os::init_3(void) {
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5139
  return;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5140
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5141
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5142
// Mark the polling page as unreadable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5143
void os::make_polling_page_unreadable(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5144
  if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5145
    fatal("Could not disable polling page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5146
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5147
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5148
// Mark the polling page as readable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5149
void os::make_polling_page_readable(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5150
  if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5151
    fatal("Could not enable polling page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5152
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5153
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5154
// OS interface.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5155
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5156
bool os::check_heap(bool force) { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5157
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5158
typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5159
static vsnprintf_t sol_vsnprintf = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5160
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5161
int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5162
  if (!sol_vsnprintf) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5163
    //search  for the named symbol in the objects that were loaded after libjvm
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5164
    void* where = RTLD_NEXT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5165
    if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5166
        sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5167
    if (!sol_vsnprintf){
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5168
      //search  for the named symbol in the objects that were loaded before libjvm
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5169
      where = RTLD_DEFAULT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5170
      if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5171
        sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5172
      assert(sol_vsnprintf != NULL, "vsnprintf not found");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5173
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5174
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5175
  return (*sol_vsnprintf)(buf, count, fmt, argptr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5176
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5177
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5179
// Is a (classpath) directory empty?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5180
bool os::dir_is_empty(const char* path) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5181
  DIR *dir = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5182
  struct dirent *ptr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5184
  dir = opendir(path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5185
  if (dir == NULL) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5186
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5187
  /* Scan the directory */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5188
  bool result = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5189
  char buf[sizeof(struct dirent) + MAX_PATH];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5190
  struct dirent *dbuf = (struct dirent *) buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5191
  while (result && (ptr = readdir(dir, dbuf)) != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5192
    if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5193
      result = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5194
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5195
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5196
  closedir(dir);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5197
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5198
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5199
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5200
// 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
  5201
// from src/solaris/hpi/src/system_md.c
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5202
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5203
#ifndef O_DELETE
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5204
#define O_DELETE 0x10000
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5205
#endif
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5206
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5207
// Open a file. Unlink the file immediately after open returns
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5208
// if the specified oflag has the O_DELETE flag set.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5209
// O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5210
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5211
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
  5212
  if (strlen(path) > MAX_PATH - 1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5213
    errno = ENAMETOOLONG;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5214
    return -1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5215
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5216
  int fd;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5217
  int o_delete = (oflag & O_DELETE);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5218
  oflag = oflag & ~O_DELETE;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5219
7721
8fae37350972 7009975: Large file support broken in hs20-b04
alanb
parents: 7692
diff changeset
  5220
  fd = ::open64(path, oflag, mode);
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5221
  if (fd == -1) return -1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5222
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5223
  //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
  5224
  {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5225
    struct stat64 buf64;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5226
    int ret = ::fstat64(fd, &buf64);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5227
    int st_mode = buf64.st_mode;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5228
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5229
    if (ret != -1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5230
      if ((st_mode & S_IFMT) == S_IFDIR) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5231
        errno = EISDIR;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5232
        ::close(fd);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5233
        return -1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5234
      }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5235
    } else {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5236
      ::close(fd);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5237
      return -1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5238
    }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5239
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5240
    /*
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5241
     * 32-bit Solaris systems suffer from:
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5242
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5243
     * - an historical default soft limit of 256 per-process file
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5244
     *   descriptors that is too low for many Java programs.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5245
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5246
     * - a design flaw where file descriptors created using stdio
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5247
     *   fopen must be less than 256, _even_ when the first limit above
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5248
     *   has been raised.  This can cause calls to fopen (but not calls to
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5249
     *   open, for example) to fail mysteriously, perhaps in 3rd party
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5250
     *   native code (although the JDK itself uses fopen).  One can hardly
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5251
     *   criticize them for using this most standard of all functions.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5252
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5253
     * We attempt to make everything work anyways by:
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5254
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5255
     * - raising the soft limit on per-process file descriptors beyond
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5256
     *   256
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5257
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5258
     * - As of Solaris 10u4, we can request that Solaris raise the 256
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5259
     *   stdio fopen limit by calling function enable_extended_FILE_stdio.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5260
     *   This is done in init_2 and recorded in enabled_extended_FILE_stdio
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5261
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5262
     * - If we are stuck on an old (pre 10u4) Solaris system, we can
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5263
     *   workaround the bug by remapping non-stdio file descriptors below
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5264
     *   256 to ones beyond 256, which is done below.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5265
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5266
     * See:
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5267
     * 1085341: 32-bit stdio routines should support file descriptors >255
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5268
     * 6533291: Work around 32-bit Solaris stdio limit of 256 open files
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5269
     * 6431278: Netbeans crash on 32 bit Solaris: need to call
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5270
     *          enable_extended_FILE_stdio() in VM initialisation
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5271
     * Giri Mandalika's blog
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5272
     * http://technopark02.blogspot.com/2005_05_01_archive.html
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5273
     */
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5274
#ifndef  _LP64
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5275
     if ((!enabled_extended_FILE_stdio) && fd < 256) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5276
         int newfd = ::fcntl(fd, F_DUPFD, 256);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5277
         if (newfd != -1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5278
             ::close(fd);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5279
             fd = newfd;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5280
         }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5281
     }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5282
#endif // 32-bit Solaris
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5283
    /*
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5284
     * All file descriptors that are opened in the JVM and not
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5285
     * specifically destined for a subprocess should have the
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5286
     * close-on-exec flag set.  If we don't set it, then careless 3rd
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5287
     * party native code might fork and exec without closing all
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5288
     * appropriate file descriptors (e.g. as we do in closeDescriptors in
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5289
     * UNIXProcess.c), and this in turn might:
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5290
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5291
     * - cause end-of-file to fail to be detected on some file
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5292
     *   descriptors, resulting in mysterious hangs, or
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5293
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5294
     * - might cause an fopen in the subprocess to fail on a system
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5295
     *   suffering from bug 1085341.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5296
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5297
     * (Yes, the default setting of the close-on-exec flag is a Unix
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5298
     * design flaw)
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5299
     *
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5300
     * See:
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5301
     * 1085341: 32-bit stdio routines should support file descriptors >255
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5302
     * 4843136: (process) pipe file descriptor from Runtime.exec not being closed
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5303
     * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5304
     */
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5305
#ifdef FD_CLOEXEC
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5306
    {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5307
        int flags = ::fcntl(fd, F_GETFD);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5308
        if (flags != -1)
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5309
            ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5310
    }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5311
#endif
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5312
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5313
  if (o_delete != 0) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5314
    ::unlink(path);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5315
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5316
  return fd;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5317
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5318
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5319
// create binary file, rewriting existing file if required
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5320
int os::create_binary_file(const char* path, bool rewrite_existing) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5321
  int oflags = O_WRONLY | O_CREAT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5322
  if (!rewrite_existing) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5323
    oflags |= O_EXCL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5324
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5325
  return ::open64(path, oflags, S_IREAD | S_IWRITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5326
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5327
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5328
// return current position of file pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5329
jlong os::current_file_offset(int fd) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5330
  return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5331
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5332
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5333
// move file pointer to the specified offset
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5334
jlong os::seek_to_file_offset(int fd, jlong offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5335
  return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5336
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5337
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5338
jlong os::lseek(int fd, jlong offset, int whence) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5339
  return (jlong) ::lseek64(fd, offset, whence);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5340
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5341
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5342
char * os::native_path(char *path) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5343
  return path;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5344
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5345
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5346
int os::ftruncate(int fd, jlong length) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5347
  return ::ftruncate64(fd, length);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5348
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5349
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5350
int os::fsync(int fd)  {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5351
  RESTARTABLE_RETURN_INT(::fsync(fd));
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5352
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5353
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5354
int os::available(int fd, jlong *bytes) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5355
  jlong cur, end;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5356
  int mode;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5357
  struct stat64 buf64;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5358
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5359
  if (::fstat64(fd, &buf64) >= 0) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5360
    mode = buf64.st_mode;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5361
    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
  5362
      /*
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5363
      * XXX: is the following call interruptible? If so, this might
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5364
      * need to go through the INTERRUPT_IO() wrapper as for other
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5365
      * blocking, interruptible calls in this file.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5366
      */
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5367
      int n,ioctl_return;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5368
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5369
      INTERRUPTIBLE(::ioctl(fd, FIONREAD, &n),ioctl_return,os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5370
      if (ioctl_return>= 0) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5371
          *bytes = n;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5372
        return 1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5373
      }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5374
    }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5375
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5376
  if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5377
    return 0;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5378
  } 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
  5379
    return 0;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5380
  } else if (::lseek64(fd, cur, SEEK_SET) == -1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5381
    return 0;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5382
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5383
  *bytes = end - cur;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5384
  return 1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5385
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5386
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5387
// Map a block of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5388
char* os::map_memory(int fd, const char* file_name, size_t file_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5389
                     char *addr, size_t bytes, bool read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5390
                     bool allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5391
  int prot;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5392
  int flags;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5393
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5394
  if (read_only) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5395
    prot = PROT_READ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5396
    flags = MAP_SHARED;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5397
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5398
    prot = PROT_READ | PROT_WRITE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5399
    flags = MAP_PRIVATE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5400
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5401
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5402
  if (allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5403
    prot |= PROT_EXEC;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5404
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5405
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5406
  if (addr != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5407
    flags |= MAP_FIXED;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5408
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5409
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5410
  char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5411
                                     fd, file_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5412
  if (mapped_address == MAP_FAILED) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5413
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5414
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5415
  return mapped_address;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5416
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5417
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5418
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5419
// Remap a block of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5420
char* os::remap_memory(int fd, const char* file_name, size_t file_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5421
                       char *addr, size_t bytes, bool read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5422
                       bool allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5423
  // same as map_memory() on this OS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5424
  return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5425
                        allow_exec);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5426
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5427
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5428
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5429
// Unmap a block of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5430
bool os::unmap_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5431
  return munmap(addr, bytes) == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5432
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5433
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5434
void os::pause() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5435
  char filename[MAX_PATH];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5436
  if (PauseAtStartupFile && PauseAtStartupFile[0]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5437
    jio_snprintf(filename, MAX_PATH, PauseAtStartupFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5438
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5439
    jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5440
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5441
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5442
  int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5443
  if (fd != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5444
    struct stat buf;
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5445
    ::close(fd);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5446
    while (::stat(filename, &buf) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5447
      (void)::poll(NULL, 0, 100);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5448
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5449
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5450
    jio_fprintf(stderr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5451
      "Could not open pause file '%s', continuing immediately.\n", filename);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5452
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5453
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5454
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5455
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5456
#ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5457
// Turn this on if you need to trace synch operations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5458
// Set RECORD_SYNCH_LIMIT to a large-enough value,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5459
// and call record_synch_enable and record_synch_disable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5460
// around the computation of interest.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5461
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5462
void record_synch(char* name, bool returning);  // defined below
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5463
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5464
class RecordSynch {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5465
  char* _name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5466
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5467
  RecordSynch(char* name) :_name(name)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5468
                 { record_synch(_name, false); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5469
  ~RecordSynch() { record_synch(_name,   true);  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5470
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5471
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5472
#define CHECK_SYNCH_OP(ret, name, params, args, inner)          \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5473
extern "C" ret name params {                                    \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5474
  typedef ret name##_t params;                                  \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5475
  static name##_t* implem = NULL;                               \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5476
  static int callcount = 0;                                     \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5477
  if (implem == NULL) {                                         \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5478
    implem = (name##_t*) dlsym(RTLD_NEXT, #name);               \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5479
    if (implem == NULL)  fatal(dlerror());                      \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5480
  }                                                             \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5481
  ++callcount;                                                  \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5482
  RecordSynch _rs(#name);                                       \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5483
  inner;                                                        \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5484
  return implem args;                                           \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5485
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5486
// in dbx, examine callcounts this way:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5487
// for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5488
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5489
#define CHECK_POINTER_OK(p) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5490
  (Universe::perm_gen() == NULL || !Universe::is_reserved_heap((oop)(p)))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5491
#define CHECK_MU \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5492
  if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5493
#define CHECK_CV \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5494
  if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5495
#define CHECK_P(p) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5496
  if (!CHECK_POINTER_OK(p))  fatal(false,  "Pointer must be in C heap only.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5497
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5498
#define CHECK_MUTEX(mutex_op) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5499
CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5500
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5501
CHECK_MUTEX(   mutex_lock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5502
CHECK_MUTEX(  _mutex_lock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5503
CHECK_MUTEX( mutex_unlock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5504
CHECK_MUTEX(_mutex_unlock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5505
CHECK_MUTEX( mutex_trylock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5506
CHECK_MUTEX(_mutex_trylock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5507
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5508
#define CHECK_COND(cond_op) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5509
CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5510
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5511
CHECK_COND( cond_wait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5512
CHECK_COND(_cond_wait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5513
CHECK_COND(_cond_wait_cancel);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5514
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5515
#define CHECK_COND2(cond_op) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5516
CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5517
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5518
CHECK_COND2( cond_timedwait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5519
CHECK_COND2(_cond_timedwait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5520
CHECK_COND2(_cond_timedwait_cancel);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5521
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5522
// do the _lwp_* versions too
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5523
#define mutex_t lwp_mutex_t
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5524
#define cond_t  lwp_cond_t
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5525
CHECK_MUTEX(  _lwp_mutex_lock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5526
CHECK_MUTEX(  _lwp_mutex_unlock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5527
CHECK_MUTEX(  _lwp_mutex_trylock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5528
CHECK_MUTEX( __lwp_mutex_lock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5529
CHECK_MUTEX( __lwp_mutex_unlock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5530
CHECK_MUTEX( __lwp_mutex_trylock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5531
CHECK_MUTEX(___lwp_mutex_lock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5532
CHECK_MUTEX(___lwp_mutex_unlock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5533
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5534
CHECK_COND(  _lwp_cond_wait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5535
CHECK_COND( __lwp_cond_wait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5536
CHECK_COND(___lwp_cond_wait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5537
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5538
CHECK_COND2(  _lwp_cond_timedwait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5539
CHECK_COND2( __lwp_cond_timedwait);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5540
#undef mutex_t
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5541
#undef cond_t
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5542
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5543
CHECK_SYNCH_OP(int, _lwp_suspend2,       (int lwp, int *n), (lwp, n), 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5544
CHECK_SYNCH_OP(int,__lwp_suspend2,       (int lwp, int *n), (lwp, n), 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5545
CHECK_SYNCH_OP(int, _lwp_kill,           (int lwp, int n),  (lwp, n), 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5546
CHECK_SYNCH_OP(int,__lwp_kill,           (int lwp, int n),  (lwp, n), 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5547
CHECK_SYNCH_OP(int, _lwp_sema_wait,      (lwp_sema_t* p),   (p),  CHECK_P(p));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5548
CHECK_SYNCH_OP(int,__lwp_sema_wait,      (lwp_sema_t* p),   (p),  CHECK_P(p));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5549
CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv),  (cv), CHECK_CV);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5550
CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv),  (cv), CHECK_CV);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5551
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5552
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5553
// recording machinery:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5554
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5555
enum { RECORD_SYNCH_LIMIT = 200 };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5556
char* record_synch_name[RECORD_SYNCH_LIMIT];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5557
void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5558
bool record_synch_returning[RECORD_SYNCH_LIMIT];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5559
thread_t record_synch_thread[RECORD_SYNCH_LIMIT];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5560
int record_synch_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5561
bool record_synch_enabled = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5562
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5563
// in dbx, examine recorded data this way:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5564
// for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5565
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5566
void record_synch(char* name, bool returning) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5567
  if (record_synch_enabled) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5568
    if (record_synch_count < RECORD_SYNCH_LIMIT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5569
      record_synch_name[record_synch_count] = name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5570
      record_synch_returning[record_synch_count] = returning;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5571
      record_synch_thread[record_synch_count] = thr_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5572
      record_synch_arg0ptr[record_synch_count] = &name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5573
      record_synch_count++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5574
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5575
    // put more checking code here:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5576
    // ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5577
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5578
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5580
void record_synch_enable() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5581
  // start collecting trace data, if not already doing so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5582
  if (!record_synch_enabled)  record_synch_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5583
  record_synch_enabled = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5584
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5585
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5586
void record_synch_disable() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5587
  // stop collecting trace data
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5588
  record_synch_enabled = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5589
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5590
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5591
#endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5592
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5593
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5594
const intptr_t thr_time_off  = (intptr_t)(&((prusage_t *)(NULL))->pr_utime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5595
const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) -
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5596
                               (intptr_t)(&((prusage_t *)(NULL))->pr_utime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5597
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5598
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5599
// JVMTI & JVM monitoring and management support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5600
// The thread_cpu_time() and current_thread_cpu_time() are only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5601
// supported if is_thread_cpu_time_supported() returns true.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5602
// They are not supported on Solaris T1.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5603
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5604
// current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5605
// are used by JVM M&M and JVMTI to get user+sys or user CPU time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5606
// of a thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5607
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5608
// current_thread_cpu_time() and thread_cpu_time(Thread *)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5609
// returns the fast estimate available on the platform.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5610
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5611
// hrtime_t gethrvtime() return value includes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5612
// user time but does not include system time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5613
jlong os::current_thread_cpu_time() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5614
  return (jlong) gethrvtime();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5615
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5616
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5617
jlong os::thread_cpu_time(Thread *thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5618
  // return user level CPU time only to be consistent with
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5619
  // what current_thread_cpu_time returns.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5620
  // thread_cpu_time_info() must be changed if this changes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5621
  return os::thread_cpu_time(thread, false /* user time only */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5622
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5623
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5624
jlong os::current_thread_cpu_time(bool user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5625
  if (user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5626
    return os::thread_cpu_time(Thread::current(), user_sys_cpu_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5627
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5628
    return os::current_thread_cpu_time();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5629
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5630
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5631
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5632
jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5633
  char proc_name[64];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5634
  int count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5635
  prusage_t prusage;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5636
  jlong lwp_time;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5637
  int fd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5638
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5639
  sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5640
                     getpid(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5641
                     thread->osthread()->lwp_id());
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5642
  fd = ::open(proc_name, O_RDONLY);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5643
  if ( fd == -1 ) return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5644
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5645
  do {
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5646
    count = ::pread(fd,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5647
                  (void *)&prusage.pr_utime,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5648
                  thr_time_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5649
                  thr_time_off);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5650
  } while (count < 0 && errno == EINTR);
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  5651
  ::close(fd);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5652
  if ( count < 0 ) return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5654
  if (user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5655
    // user + system CPU time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5656
    lwp_time = (((jlong)prusage.pr_stime.tv_sec +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5657
                 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5658
                 (jlong)prusage.pr_stime.tv_nsec +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5659
                 (jlong)prusage.pr_utime.tv_nsec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5660
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5661
    // user level CPU time only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5662
    lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5663
                (jlong)prusage.pr_utime.tv_nsec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5664
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5665
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5666
  return(lwp_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5667
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5668
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5669
void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5670
  info_ptr->max_value = ALL_64_BITS;      // will not wrap in less than 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5671
  info_ptr->may_skip_backward = false;    // elapsed time not wall time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5672
  info_ptr->may_skip_forward = false;     // elapsed time not wall time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5673
  info_ptr->kind = JVMTI_TIMER_USER_CPU;  // only user time is returned
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5674
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5675
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5676
void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5677
  info_ptr->max_value = ALL_64_BITS;      // will not wrap in less than 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5678
  info_ptr->may_skip_backward = false;    // elapsed time not wall time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5679
  info_ptr->may_skip_forward = false;     // elapsed time not wall time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5680
  info_ptr->kind = JVMTI_TIMER_USER_CPU;  // only user time is returned
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5681
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5683
bool os::is_thread_cpu_time_supported() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5684
  if ( os::Solaris::T2_libthread() || UseBoundThreads ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5685
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5686
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5687
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5688
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5689
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5690
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5691
// System loadavg support.  Returns -1 if load average cannot be obtained.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5692
// Return the load average for our processor set if the primitive exists
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5693
// (Solaris 9 and later).  Otherwise just return system wide loadavg.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5694
int os::loadavg(double loadavg[], int nelem) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5695
  if (pset_getloadavg_ptr != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5696
    return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5697
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5698
    return ::getloadavg(loadavg, nelem);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5699
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5700
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5701
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5702
//---------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5703
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5704
static address same_page(address x, address y) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5705
  intptr_t page_bits = -os::vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5706
  if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5707
    return x;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5708
  else if (x > y)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5709
    return (address)(intptr_t(y) | ~page_bits) + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5710
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5711
    return (address)(intptr_t(y) & page_bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5712
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5713
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5714
bool os::find(address addr, outputStream* st) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5715
  Dl_info dlinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5716
  memset(&dlinfo, 0, sizeof(dlinfo));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5717
  if (dladdr(addr, &dlinfo)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5718
#ifdef _LP64
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5719
    st->print("0x%016lx: ", addr);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5720
#else
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5721
    st->print("0x%08x: ", addr);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5722
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5723
    if (dlinfo.dli_sname != NULL)
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5724
      st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5725
    else if (dlinfo.dli_fname)
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5726
      st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5727
    else
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5728
      st->print("<absolute address>");
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5729
    if (dlinfo.dli_fname)  st->print(" in %s", dlinfo.dli_fname);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5730
#ifdef _LP64
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5731
    if (dlinfo.dli_fbase)  st->print(" at 0x%016lx", dlinfo.dli_fbase);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5732
#else
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5733
    if (dlinfo.dli_fbase)  st->print(" at 0x%08x", dlinfo.dli_fbase);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5734
#endif
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5735
    st->cr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5737
    if (Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5738
      // decode some bytes around the PC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5739
      address begin = same_page(addr-40, addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5740
      address end   = same_page(addr+40, addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5741
      address       lowest = (address) dlinfo.dli_sname;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5742
      if (!lowest)  lowest = (address) dlinfo.dli_fbase;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5743
      if (begin < lowest)  begin = lowest;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5744
      Dl_info dlinfo2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5745
      if (dladdr(end, &dlinfo2) && dlinfo2.dli_saddr != dlinfo.dli_saddr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5746
          && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5747
        end = (address) dlinfo2.dli_saddr;
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  5748
      Disassembler::decode(begin, end, st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5749
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5750
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5751
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5752
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5753
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5754
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5755
// Following function has been added to support HotSparc's libjvm.so running
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5756
// under Solaris production JDK 1.2.2 / 1.3.0.  These came from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5757
// src/solaris/hpi/native_threads in the EVM codebase.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5758
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5759
// NOTE: This is no longer needed in the 1.3.1 and 1.4 production release
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5760
// libraries and should thus be removed. We will leave it behind for a while
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5761
// until we no longer want to able to run on top of 1.3.0 Solaris production
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5762
// JDK. See 4341971.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5764
#define STACK_SLACK 0x800
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5765
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5766
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5767
  intptr_t sysThreadAvailableStackWithSlack() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5768
    stack_t st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5769
    intptr_t retval, stack_top;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5770
    retval = thr_stksegment(&st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5771
    assert(retval == 0, "incorrect return value from thr_stksegment");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5772
    assert((address)&st < (address)st.ss_sp, "Invalid stack base returned");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5773
    assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5774
    stack_top=(intptr_t)st.ss_sp-st.ss_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5775
    return ((intptr_t)&stack_top - stack_top - STACK_SLACK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5776
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5777
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5778
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5779
// Just to get the Kernel build to link on solaris for testing.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5780
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5781
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5782
class ASGCT_CallTrace;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5783
void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5784
  KERNEL_RETURN;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5785
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5786
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5787
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5788
// ObjectMonitor park-unpark infrastructure ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5789
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5790
// We implement Solaris and Linux PlatformEvents with the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5791
// obvious condvar-mutex-flag triple.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5792
// Another alternative that works quite well is pipes:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5793
// Each PlatformEvent consists of a pipe-pair.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5794
// The thread associated with the PlatformEvent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5795
// calls park(), which reads from the input end of the pipe.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5796
// Unpark() writes into the other end of the pipe.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5797
// The write-side of the pipe must be set NDELAY.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5798
// Unfortunately pipes consume a large # of handles.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5799
// Native solaris lwp_park() and lwp_unpark() work nicely, too.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5800
// Using pipes for the 1st few threads might be workable, however.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5801
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5802
// park() is permitted to return spuriously.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5803
// Callers of park() should wrap the call to park() in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5804
// an appropriate loop.  A litmus test for the correct
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5805
// usage of park is the following: if park() were modified
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5806
// to immediately return 0 your code should still work,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5807
// albeit degenerating to a spin loop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5808
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5809
// An interesting optimization for park() is to use a trylock()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5810
// to attempt to acquire the mutex.  If the trylock() fails
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5811
// then we know that a concurrent unpark() operation is in-progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5812
// in that case the park() code could simply set _count to 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5813
// and return immediately.  The subsequent park() operation *might*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5814
// return immediately.  That's harmless as the caller of park() is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5815
// expected to loop.  By using trylock() we will have avoided a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5816
// avoided a context switch caused by contention on the per-thread mutex.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5817
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5818
// TODO-FIXME:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5819
// 1.  Reconcile Doug's JSR166 j.u.c park-unpark with the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5820
//     objectmonitor implementation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5821
// 2.  Collapse the JSR166 parker event, and the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5822
//     objectmonitor ParkEvent into a single "Event" construct.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5823
// 3.  In park() and unpark() add:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5824
//     assert (Thread::current() == AssociatedWith).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5825
// 4.  add spurious wakeup injection on a -XX:EarlyParkReturn=N switch.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5826
//     1-out-of-N park() operations will return immediately.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5827
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5828
// _Event transitions in park()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5829
//   -1 => -1 : illegal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5830
//    1 =>  0 : pass - return immediately
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5831
//    0 => -1 : block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5832
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5833
// _Event serves as a restricted-range semaphore.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5834
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5835
// Another possible encoding of _Event would be with
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5836
// explicit "PARKED" == 01b and "SIGNALED" == 10b bits.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5837
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5838
// TODO-FIXME: add DTRACE probes for:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5839
// 1.   Tx parks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5840
// 2.   Ty unparks Tx
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5841
// 3.   Tx resumes from park
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5842
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5843
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5844
// value determined through experimentation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5845
#define ROUNDINGFIX 11
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5846
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5847
// utility to compute the abstime argument to timedwait.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5848
// TODO-FIXME: switch from compute_abstime() to unpackTime().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5849
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5850
static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5851
  // millis is the relative timeout time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5852
  // abstime will be the absolute timeout time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5853
  if (millis < 0)  millis = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5854
  struct timeval now;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5855
  int status = gettimeofday(&now, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5856
  assert(status == 0, "gettimeofday");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5857
  jlong seconds = millis / 1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5858
  jlong max_wait_period;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5859
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5860
  if (UseLWPSynchronization) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5861
    // forward port of fix for 4275818 (not sleeping long enough)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5862
    // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5863
    // _lwp_cond_timedwait() used a round_down algorithm rather
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5864
    // than a round_up. For millis less than our roundfactor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5865
    // it rounded down to 0 which doesn't meet the spec.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5866
    // For millis > roundfactor we may return a bit sooner, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5867
    // since we can not accurately identify the patch level and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5868
    // this has already been fixed in Solaris 9 and 8 we will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5869
    // leave it alone rather than always rounding down.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5870
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5871
    if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5872
       // It appears that when we go directly through Solaris _lwp_cond_timedwait()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5873
           // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5874
           max_wait_period = 21000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5875
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5876
    max_wait_period = 50000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5877
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5878
  millis %= 1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5879
  if (seconds > max_wait_period) {      // see man cond_timedwait(3T)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5880
     seconds = max_wait_period;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5881
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5882
  abstime->tv_sec = now.tv_sec  + seconds;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5883
  long       usec = now.tv_usec + millis * 1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5884
  if (usec >= 1000000) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5885
    abstime->tv_sec += 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5886
    usec -= 1000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5887
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5888
  abstime->tv_nsec = usec * 1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5889
  return abstime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5890
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5891
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5892
// Test-and-clear _Event, always leaves _Event set to 0, returns immediately.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5893
// Conceptually TryPark() should be equivalent to park(0).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5894
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5895
int os::PlatformEvent::TryPark() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5896
  for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5897
    const int v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5898
    guarantee ((v == 0) || (v == 1), "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5899
    if (Atomic::cmpxchg (0, &_Event, v) == v) return v  ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5900
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5901
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5902
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5903
void os::PlatformEvent::park() {           // AKA: down()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5904
  // Invariant: Only the thread associated with the Event/PlatformEvent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5905
  // may call park().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5906
  int v ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5907
  for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5908
      v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5909
      if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5910
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5911
  guarantee (v >= 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5912
  if (v == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5913
     // Do this the hard way by blocking ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5914
     // See http://monaco.sfbay/detail.jsf?cr=5094058.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5915
     // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5916
     // Only for SPARC >= V8PlusA
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5917
#if defined(__sparc) && defined(COMPILER2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5918
     if (ClearFPUAtPark) { _mark_fpu_nosave() ; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5919
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5920
     int status = os::Solaris::mutex_lock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5921
     assert_status(status == 0, status,  "mutex_lock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5922
     guarantee (_nParked == 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5923
     ++ _nParked ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5924
     while (_Event < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5925
        // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5926
        // Treat this the same as if the wait was interrupted
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5927
        // With usr/lib/lwp going to kernel, always handle ETIME
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5928
        status = os::Solaris::cond_wait(_cond, _mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5929
        if (status == ETIME) status = EINTR ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5930
        assert_status(status == 0 || status == EINTR, status, "cond_wait");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5931
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5932
     -- _nParked ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5933
     _Event = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5934
     status = os::Solaris::mutex_unlock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5935
     assert_status(status == 0, status, "mutex_unlock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5936
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5937
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5938
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5939
int os::PlatformEvent::park(jlong millis) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5940
  guarantee (_nParked == 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5941
  int v ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5942
  for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5943
      v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5944
      if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5945
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5946
  guarantee (v >= 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5947
  if (v != 0) return OS_OK ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5948
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5949
  int ret = OS_TIMEOUT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5950
  timestruc_t abst;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5951
  compute_abstime (&abst, millis);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5952
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5953
  // See http://monaco.sfbay/detail.jsf?cr=5094058.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5954
  // For Solaris SPARC set fprs.FEF=0 prior to parking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5955
  // Only for SPARC >= V8PlusA
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5956
#if defined(__sparc) && defined(COMPILER2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5957
 if (ClearFPUAtPark) { _mark_fpu_nosave() ; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5958
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5959
  int status = os::Solaris::mutex_lock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5960
  assert_status(status == 0, status, "mutex_lock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5961
  guarantee (_nParked == 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5962
  ++ _nParked ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5963
  while (_Event < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5964
     int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5965
     assert_status(status == 0 || status == EINTR ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5966
                   status == ETIME || status == ETIMEDOUT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5967
                   status, "cond_timedwait");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5968
     if (!FilterSpuriousWakeups) break ;                // previous semantics
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5969
     if (status == ETIME || status == ETIMEDOUT) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5970
     // We consume and ignore EINTR and spurious wakeups.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5971
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5972
  -- _nParked ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5973
  if (_Event >= 0) ret = OS_OK ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5974
  _Event = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5975
  status = os::Solaris::mutex_unlock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5976
  assert_status(status == 0, status, "mutex_unlock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5977
  return ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5978
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5979
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5980
void os::PlatformEvent::unpark() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5981
  int v, AnyWaiters;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5982
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5983
  // Increment _Event.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5984
  // Another acceptable implementation would be to simply swap 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5985
  // into _Event:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5986
  //   if (Swap (&_Event, 1) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5987
  //      mutex_lock (_mutex) ; AnyWaiters = nParked; mutex_unlock (_mutex) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5988
  //      if (AnyWaiters) cond_signal (_cond) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5989
  //   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5990
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5991
  for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5992
    v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5993
    if (v > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5994
       // The LD of _Event could have reordered or be satisfied
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5995
       // by a read-aside from this processor's write buffer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5996
       // To avoid problems execute a barrier and then
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5997
       // ratify the value.  A degenerate CAS() would also work.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5998
       // Viz., CAS (v+0, &_Event, v) == v).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5999
       OrderAccess::fence() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6000
       if (_Event == v) return ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6001
       continue ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6002
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6003
    if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6004
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6005
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6006
  // If the thread associated with the event was parked, wake it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6007
  if (v < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6008
     int status ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6009
     // Wait for the thread assoc with the PlatformEvent to vacate.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6010
     status = os::Solaris::mutex_lock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6011
     assert_status(status == 0, status, "mutex_lock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6012
     AnyWaiters = _nParked ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6013
     status = os::Solaris::mutex_unlock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6014
     assert_status(status == 0, status, "mutex_unlock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6015
     guarantee (AnyWaiters == 0 || AnyWaiters == 1, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6016
     if (AnyWaiters != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6017
       // We intentional signal *after* dropping the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6018
       // to avoid a common class of futile wakeups.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6019
       status = os::Solaris::cond_signal(_cond);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6020
       assert_status(status == 0, status, "cond_signal");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6021
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6022
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6023
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6024
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6025
// JSR166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6026
// -------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6028
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6029
 * The solaris and linux implementations of park/unpark are fairly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6030
 * conservative for now, but can be improved. They currently use a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6031
 * mutex/condvar pair, plus _counter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6032
 * Park decrements _counter if > 0, else does a condvar wait.  Unpark
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6033
 * sets count to 1 and signals condvar.  Only one thread ever waits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6034
 * on the condvar. Contention seen when trying to park implies that someone
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6035
 * is unparking you, so don't wait. And spurious returns are fine, so there
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6036
 * is no need to track notifications.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6037
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6038
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6039
#define NANOSECS_PER_SEC 1000000000
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6040
#define NANOSECS_PER_MILLISEC 1000000
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6041
#define MAX_SECS 100000000
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6043
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6044
 * This code is common to linux and solaris and will be moved to a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6045
 * common place in dolphin.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6046
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6047
 * The passed in time value is either a relative time in nanoseconds
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6048
 * or an absolute time in milliseconds. Either way it has to be unpacked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6049
 * into suitable seconds and nanoseconds components and stored in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6050
 * given timespec structure.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6051
 * Given time is a 64-bit value and the time_t used in the timespec is only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6052
 * a signed-32-bit value (except on 64-bit Linux) we have to watch for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6053
 * overflow if times way in the future are given. Further on Solaris versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6054
 * prior to 10 there is a restriction (see cond_timedwait) that the specified
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6055
 * number of seconds, in abstime, is less than current_time  + 100,000,000.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6056
 * As it will be 28 years before "now + 100000000" will overflow we can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6057
 * ignore overflow and just impose a hard-limit on seconds using the value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6058
 * of "now + 100,000,000". This places a limit on the timeout of about 3.17
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6059
 * years from "now".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6060
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6061
static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6062
  assert (time > 0, "convertTime");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6063
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6064
  struct timeval now;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6065
  int status = gettimeofday(&now, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6066
  assert(status == 0, "gettimeofday");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6067
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6068
  time_t max_secs = now.tv_sec + MAX_SECS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6069
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6070
  if (isAbsolute) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6071
    jlong secs = time / 1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6072
    if (secs > max_secs) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6073
      absTime->tv_sec = max_secs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6074
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6075
    else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6076
      absTime->tv_sec = secs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6077
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6078
    absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6079
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6080
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6081
    jlong secs = time / NANOSECS_PER_SEC;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6082
    if (secs >= MAX_SECS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6083
      absTime->tv_sec = max_secs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6084
      absTime->tv_nsec = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6085
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6086
    else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6087
      absTime->tv_sec = now.tv_sec + secs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6088
      absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6089
      if (absTime->tv_nsec >= NANOSECS_PER_SEC) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6090
        absTime->tv_nsec -= NANOSECS_PER_SEC;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6091
        ++absTime->tv_sec; // note: this must be <= max_secs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6092
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6093
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6094
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6095
  assert(absTime->tv_sec >= 0, "tv_sec < 0");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6096
  assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6097
  assert(absTime->tv_nsec >= 0, "tv_nsec < 0");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6098
  assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6099
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6100
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6101
void Parker::park(bool isAbsolute, jlong time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6102
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6103
  // Optional fast-path check:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6104
  // Return immediately if a permit is available.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6105
  if (_counter > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6106
      _counter = 0 ;
4487
de1359156181 6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
dholmes
parents: 3594
diff changeset
  6107
      OrderAccess::fence();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6108
      return ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6109
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6110
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6111
  // Optional fast-exit: Check interrupt before trying to wait
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6112
  Thread* thread = Thread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6113
  assert(thread->is_Java_thread(), "Must be JavaThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6114
  JavaThread *jt = (JavaThread *)thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6115
  if (Thread::is_interrupted(thread, false)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6116
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6117
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6118
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6119
  // First, demultiplex/decode time arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6120
  timespec absTime;
6962
d49132ce025b 6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
acorn
parents: 6176
diff changeset
  6121
  if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6122
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6123
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6124
  if (time > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6125
    // Warning: this code might be exposed to the old Solaris time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6126
    // round-down bugs.  Grep "roundingFix" for details.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6127
    unpackTime(&absTime, isAbsolute, time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6128
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6129
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6130
  // Enter safepoint region
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6131
  // Beware of deadlocks such as 6317397.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6132
  // The per-thread Parker:: _mutex is a classic leaf-lock.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6133
  // In particular a thread must never block on the Threads_lock while
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6134
  // holding the Parker:: mutex.  If safepoints are pending both the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6135
  // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6136
  ThreadBlockInVM tbivm(jt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6137
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6138
  // Don't wait if cannot get lock since interference arises from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6139
  // unblocking.  Also. check interrupt before trying wait
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6140
  if (Thread::is_interrupted(thread, false) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6141
      os::Solaris::mutex_trylock(_mutex) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6142
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6143
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6144
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6145
  int status ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6146
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6147
  if (_counter > 0)  { // no wait needed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6148
    _counter = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6149
    status = os::Solaris::mutex_unlock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6150
    assert (status == 0, "invariant") ;
4487
de1359156181 6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
dholmes
parents: 3594
diff changeset
  6151
    OrderAccess::fence();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6152
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6153
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6154
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6155
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6156
  // Don't catch signals while blocked; let the running threads have the signals.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6157
  // (This allows a debugger to break into the running thread.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6158
  sigset_t oldsigs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6159
  sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6160
  thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6161
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6162
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6163
  OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6164
  jt->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6165
  // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6167
  // Do this the hard way by blocking ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6168
  // See http://monaco.sfbay/detail.jsf?cr=5094058.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6169
  // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6170
  // Only for SPARC >= V8PlusA
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6171
#if defined(__sparc) && defined(COMPILER2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6172
  if (ClearFPUAtPark) { _mark_fpu_nosave() ; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6173
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6174
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6175
  if (time == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6176
    status = os::Solaris::cond_wait (_cond, _mutex) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6177
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6178
    status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6179
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6180
  // Note that an untimed cond_wait() can sometimes return ETIME on older
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6181
  // versions of the Solaris.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6182
  assert_status(status == 0 || status == EINTR ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6183
                status == ETIME || status == ETIMEDOUT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6184
                status, "cond_timedwait");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6185
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6186
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6187
  thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6188
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6189
  _counter = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6190
  status = os::Solaris::mutex_unlock(_mutex);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6191
  assert_status(status == 0, status, "mutex_unlock") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6192
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6193
  // If externally suspended while waiting, re-suspend
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6194
  if (jt->handle_special_suspend_equivalent_condition()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6195
    jt->java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6196
  }
4487
de1359156181 6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
dholmes
parents: 3594
diff changeset
  6197
  OrderAccess::fence();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6198
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6199
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6200
void Parker::unpark() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6201
  int s, status ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6202
  status = os::Solaris::mutex_lock (_mutex) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6203
  assert (status == 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6204
  s = _counter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6205
  _counter = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6206
  status = os::Solaris::mutex_unlock (_mutex) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6207
  assert (status == 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6208
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6209
  if (s < 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6210
    status = os::Solaris::cond_signal (_cond) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6211
    assert (status == 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6212
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6213
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6214
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6215
extern char** environ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6217
// Run the specified command in a separate process. Return its exit value,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6218
// or -1 on failure (e.g. can't fork a new process).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6219
// Unlike system(), this function can be called from signal handler. It
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6220
// doesn't block SIGINT et al.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6221
int os::fork_and_exec(char* cmd) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6222
  char * argv[4];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6223
  argv[0] = (char *)"sh";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6224
  argv[1] = (char *)"-c";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6225
  argv[2] = cmd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6226
  argv[3] = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6227
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6228
  // fork is async-safe, fork1 is not so can't use in signal handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6229
  pid_t pid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6230
  Thread* t = ThreadLocalStorage::get_thread_slow();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6231
  if (t != NULL && t->is_inside_signal_handler()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6232
    pid = fork();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6233
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6234
    pid = fork1();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6235
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6236
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6237
  if (pid < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6238
    // fork failed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6239
    warning("fork failed: %s", strerror(errno));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6240
    return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6241
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6242
  } else if (pid == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6243
    // child process
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6245
    // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6246
    execve("/usr/bin/sh", argv, environ);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6247
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6248
    // execve failed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6249
    _exit(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6250
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6251
  } else  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6252
    // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6253
    // care about the actual exit code, for now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6254
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6255
    int status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6256
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6257
    // Wait for the child process to exit.  This returns immediately if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6258
    // the child has already exited. */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6259
    while (waitpid(pid, &status, 0) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6260
        switch (errno) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6261
        case ECHILD: return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6262
        case EINTR: break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6263
        default: return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6264
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6265
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6266
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6267
    if (WIFEXITED(status)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6268
       // The child exited normally; get its exit code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6269
       return WEXITSTATUS(status);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6270
    } else if (WIFSIGNALED(status)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6271
       // The child exited because of a signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6272
       // The best value to return is 0x80 + signal number,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6273
       // because that is what all Unix shells do, and because
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6274
       // it allows callers to distinguish between process exit and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6275
       // process death by signal.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6276
       return 0x80 + WTERMSIG(status);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6277
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6278
       // Unknown exit code; pass it through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6279
       return status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6280
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6281
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  6282
}
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6283
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6284
// is_headless_jre()
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6285
//
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6286
// Test for the existence of libmawt in motif21 or xawt directories
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6287
// 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
  6288
//
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6289
bool os::is_headless_jre() {
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6290
    struct stat statbuf;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6291
    char buf[MAXPATHLEN];
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6292
    char libmawtpath[MAXPATHLEN];
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6293
    const char *xawtstr  = "/xawt/libmawt.so";
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6294
    const char *motifstr = "/motif21/libmawt.so";
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6295
    char *p;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6296
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6297
    // Get path to libjvm.so
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6298
    os::jvm_path(buf, sizeof(buf));
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6299
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6300
    // Get rid of libjvm.so
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6301
    p = strrchr(buf, '/');
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6302
    if (p == NULL) return false;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6303
    else *p = '\0';
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6304
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6305
    // Get rid of client or server
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6306
    p = strrchr(buf, '/');
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6307
    if (p == NULL) return false;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6308
    else *p = '\0';
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6309
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6310
    // check xawt/libmawt.so
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6311
    strcpy(libmawtpath, buf);
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6312
    strcat(libmawtpath, xawtstr);
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6313
    if (::stat(libmawtpath, &statbuf) == 0) return false;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6314
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6315
    // check motif21/libmawt.so
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6316
    strcpy(libmawtpath, buf);
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6317
    strcat(libmawtpath, motifstr);
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6318
    if (::stat(libmawtpath, &statbuf) == 0) return false;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6319
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6320
    return true;
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6321
}
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5922
diff changeset
  6322
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6323
size_t os::write(int fd, const void *buf, unsigned int nBytes) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6324
  INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6325
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6326
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6327
int os::close(int fd) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6328
  RESTARTABLE_RETURN_INT(::close(fd));
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6329
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6330
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6331
int os::socket_close(int fd) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6332
  RESTARTABLE_RETURN_INT(::close(fd));
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6333
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6334
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6335
int os::recv(int fd, char *buf, int nBytes, int flags) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6336
  INTERRUPTIBLE_RETURN_INT(::recv(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6337
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6338
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6339
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6340
int os::send(int fd, char *buf, int nBytes, int flags) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6341
  INTERRUPTIBLE_RETURN_INT(::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6342
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6343
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6344
int os::raw_send(int fd, char *buf, int nBytes, int flags) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6345
  RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6346
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6347
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6348
// As both poll and select can be interrupted by signals, we have to be
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6349
// prepared to restart the system call after updating the timeout, unless
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6350
// a poll() is done with timeout == -1, in which case we repeat with this
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6351
// "wait forever" value.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6352
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6353
int os::timeout(int fd, long timeout) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6354
  int res;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6355
  struct timeval t;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6356
  julong prevtime, newtime;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6357
  static const char* aNull = 0;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6358
  struct pollfd pfd;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6359
  pfd.fd = fd;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6360
  pfd.events = POLLIN;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6361
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6362
  gettimeofday(&t, &aNull);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6363
  prevtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec / 1000;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6364
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6365
  for(;;) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6366
    INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6367
    if(res == OS_ERR && errno == EINTR) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6368
        if(timeout != -1) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6369
          gettimeofday(&t, &aNull);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6370
          newtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec /1000;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6371
          timeout -= newtime - prevtime;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6372
          if(timeout <= 0)
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6373
            return OS_OK;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6374
          prevtime = newtime;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6375
        }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6376
    } else return res;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6377
  }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6378
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6379
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6380
int os::connect(int fd, struct sockaddr *him, int len) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6381
  int _result;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6382
  INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6383
                          os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6384
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6385
  // Depending on when thread interruption is reset, _result could be
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6386
  // one of two values when errno == EINTR
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6387
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6388
  if (((_result == OS_INTRPT) || (_result == OS_ERR))
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6389
                                        && (errno == EINTR)) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6390
     /* restarting a connect() changes its errno semantics */
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6391
     INTERRUPTIBLE(::connect(fd, him, len), _result,
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6392
                     os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6393
     /* undo these changes */
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6394
     if (_result == OS_ERR) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6395
       if (errno == EALREADY) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6396
         errno = EINPROGRESS; /* fall through */
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6397
       } else if (errno == EISCONN) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6398
         errno = 0;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6399
         return OS_OK;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6400
       }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6401
     }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6402
   }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6403
   return _result;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6404
 }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6406
int os::accept(int fd, struct sockaddr *him, int *len) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6407
  if (fd < 0)
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6408
   return OS_ERR;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6409
  INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him,\
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6410
    (socklen_t*) len), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6411
 }
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6412
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6413
int os::recvfrom(int fd, char *buf, int nBytes, int flags,
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6414
                             sockaddr *from, int *fromlen) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6415
   //%%note jvm_r11
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6416
  INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes,\
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6417
    flags, from, fromlen), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6418
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6419
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6420
int os::sendto(int fd, char *buf, int len, int flags,
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6421
                           struct sockaddr *to, int tolen) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6422
  //%%note jvm_r11
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6423
  INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, flags,\
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6424
    to, tolen), os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6425
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6426
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6427
int os::socket_available(int fd, jint *pbytes) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6428
   if (fd < 0)
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6429
     return OS_OK;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6430
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6431
   int ret;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6432
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6433
   RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6434
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6435
   //%% note ioctl can return 0 when successful, JVM_SocketAvailable
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6436
   // is expected to return 0 on failure and 1 on success to the jdk.
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6437
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6438
   return (ret == OS_ERR) ? 0 : 1;
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6439
}
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6440
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6441
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6442
int os::bind(int fd, struct sockaddr *him, int len) {
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6443
   INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),\
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6444
     os::Solaris::clear_interrupted);
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  6445
}