hotspot/src/share/vm/runtime/thread.cpp
author ccheung
Thu, 18 Jul 2013 14:57:51 -0700
changeset 18946 65a870954fd7
parent 18943 7d0ef675e808
child 19713 8ef23b417f55
child 19553 9bbd930be684
child 22823 40b2c6c30123
permissions -rw-r--r--
8004872: Early loading of HashMap and StringValue under -XX:+AggressiveOpts can be removed Summary: this fix also removes the -XX:+UseStringCache option Reviewed-by: dholmes, acorn, iklam
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
15432
9d976ca484d8 8000692: Remove old KERNEL code
zgu
parents: 15221
diff changeset
     2
 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 5085
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 5085
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 5085
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    25
#include "precompiled.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    26
#include "classfile/classLoader.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    27
#include "classfile/javaClasses.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    28
#include "classfile/systemDictionary.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    29
#include "classfile/vmSymbols.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    30
#include "code/scopeDesc.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    31
#include "compiler/compileBroker.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    32
#include "interpreter/interpreter.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    33
#include "interpreter/linkResolver.hpp"
9437
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
    34
#include "interpreter/oopMapCache.hpp"
7897
201a8b00ec91 6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents: 7724
diff changeset
    35
#include "jvmtifiles/jvmtiEnv.hpp"
11637
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
    36
#include "memory/gcLocker.inline.hpp"
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
    37
#include "memory/metaspaceShared.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    38
#include "memory/oopFactory.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    39
#include "memory/universe.inline.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    40
#include "oops/instanceKlass.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    41
#include "oops/objArrayOop.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    42
#include "oops/oop.inline.hpp"
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
    43
#include "oops/symbol.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    44
#include "prims/jvm_misc.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    45
#include "prims/jvmtiExport.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    46
#include "prims/jvmtiThreadState.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    47
#include "prims/privilegedStack.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    48
#include "runtime/arguments.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    49
#include "runtime/biasedLocking.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    50
#include "runtime/deoptimization.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    51
#include "runtime/fprofiler.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    52
#include "runtime/frame.inline.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    53
#include "runtime/init.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    54
#include "runtime/interfaceSupport.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    55
#include "runtime/java.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    56
#include "runtime/javaCalls.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    57
#include "runtime/jniPeriodicChecker.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    58
#include "runtime/memprofiler.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    59
#include "runtime/mutexLocker.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    60
#include "runtime/objectMonitor.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    61
#include "runtime/osThread.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    62
#include "runtime/safepoint.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    63
#include "runtime/sharedRuntime.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    64
#include "runtime/statSampler.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    65
#include "runtime/stubRoutines.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    66
#include "runtime/task.hpp"
14583
d70ee55535f4 8003935: Simplify the needed includes for using Thread::current()
stefank
parents: 14582
diff changeset
    67
#include "runtime/thread.inline.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    68
#include "runtime/threadCritical.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    69
#include "runtime/threadLocalStorage.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    70
#include "runtime/vframe.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    71
#include "runtime/vframeArray.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    72
#include "runtime/vframe_hp.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    73
#include "runtime/vmThread.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    74
#include "runtime/vm_operations.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    75
#include "services/attachListener.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    76
#include "services/management.hpp"
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
    77
#include "services/memTracker.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    78
#include "services/threadService.hpp"
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
    79
#include "trace/tracing.hpp"
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
    80
#include "trace/traceMacros.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    81
#include "utilities/defaultStream.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    82
#include "utilities/dtrace.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    83
#include "utilities/events.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    84
#include "utilities/preserveException.hpp"
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
    85
#include "utilities/macros.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    86
#ifdef TARGET_OS_FAMILY_linux
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    87
# include "os_linux.inline.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    88
#endif
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    89
#ifdef TARGET_OS_FAMILY_solaris
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    90
# include "os_solaris.inline.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    91
#endif
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    92
#ifdef TARGET_OS_FAMILY_windows
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    93
# include "os_windows.inline.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    94
#endif
10565
dc90c239f4ec 7089790: integrate bsd-port changes
never
parents: 10546
diff changeset
    95
#ifdef TARGET_OS_FAMILY_bsd
dc90c239f4ec 7089790: integrate bsd-port changes
never
parents: 10546
diff changeset
    96
# include "os_bsd.inline.hpp"
dc90c239f4ec 7089790: integrate bsd-port changes
never
parents: 10546
diff changeset
    97
#endif
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
    98
#if INCLUDE_ALL_GCS
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
    99
#include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   100
#include "gc_implementation/g1/concurrentMarkThread.inline.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   101
#include "gc_implementation/parallelScavenge/pcTasks.hpp"
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
   102
#endif // INCLUDE_ALL_GCS
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   103
#ifdef COMPILER1
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   104
#include "c1/c1_Compiler.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   105
#endif
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   106
#ifdef COMPILER2
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   107
#include "opto/c2compiler.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   108
#include "opto/idealGraphPrinter.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 7123
diff changeset
   109
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   110
489c9b5090e2 Initial load
duke
parents:
diff changeset
   111
#ifdef DTRACE_ENABLED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   112
489c9b5090e2 Initial load
duke
parents:
diff changeset
   113
// Only bother with this argument setup if dtrace is available
489c9b5090e2 Initial load
duke
parents:
diff changeset
   114
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   115
#ifndef USDT2
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   116
HS_DTRACE_PROBE_DECL(hotspot, vm__init__begin);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   117
HS_DTRACE_PROBE_DECL(hotspot, vm__init__end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   118
HS_DTRACE_PROBE_DECL5(hotspot, thread__start, char*, intptr_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   119
  intptr_t, intptr_t, bool);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   120
HS_DTRACE_PROBE_DECL5(hotspot, thread__stop, char*, intptr_t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   121
  intptr_t, intptr_t, bool);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   122
489c9b5090e2 Initial load
duke
parents:
diff changeset
   123
#define DTRACE_THREAD_PROBE(probe, javathread)                             \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   124
  {                                                                        \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   125
    ResourceMark rm(this);                                                 \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   126
    int len = 0;                                                           \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   127
    const char* name = (javathread)->get_thread_name();                    \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   128
    len = strlen(name);                                                    \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   129
    HS_DTRACE_PROBE5(hotspot, thread__##probe,                             \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   130
      name, len,                                                           \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   131
      java_lang_Thread::thread_id((javathread)->threadObj()),              \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   132
      (javathread)->osthread()->thread_id(),                               \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   133
      java_lang_Thread::is_daemon((javathread)->threadObj()));             \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   134
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   135
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   136
#else /* USDT2 */
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   137
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   138
#define HOTSPOT_THREAD_PROBE_start HOTSPOT_THREAD_PROBE_START
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   139
#define HOTSPOT_THREAD_PROBE_stop HOTSPOT_THREAD_PROBE_STOP
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   140
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   141
#define DTRACE_THREAD_PROBE(probe, javathread)                             \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   142
  {                                                                        \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   143
    ResourceMark rm(this);                                                 \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   144
    int len = 0;                                                           \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   145
    const char* name = (javathread)->get_thread_name();                    \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   146
    len = strlen(name);                                                    \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   147
    HOTSPOT_THREAD_PROBE_##probe(  /* probe = start, stop */               \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   148
      (char *) name, len,                                                           \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   149
      java_lang_Thread::thread_id((javathread)->threadObj()),              \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   150
      (uintptr_t) (javathread)->osthread()->thread_id(),                               \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   151
      java_lang_Thread::is_daemon((javathread)->threadObj()));             \
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   152
  }
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   153
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   154
#endif /* USDT2 */
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
   155
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   156
#else //  ndef DTRACE_ENABLED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   157
489c9b5090e2 Initial load
duke
parents:
diff changeset
   158
#define DTRACE_THREAD_PROBE(probe, javathread)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   159
489c9b5090e2 Initial load
duke
parents:
diff changeset
   160
#endif // ndef DTRACE_ENABLED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   161
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   162
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   163
// Class hierarchy
489c9b5090e2 Initial load
duke
parents:
diff changeset
   164
// - Thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   165
//   - VMThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   166
//   - WatcherThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   167
//   - ConcurrentMarkSweepThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   168
//   - JavaThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   169
//     - CompilerThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   170
489c9b5090e2 Initial load
duke
parents:
diff changeset
   171
// ======= Thread ========
489c9b5090e2 Initial load
duke
parents:
diff changeset
   172
// Support for forcing alignment of thread objects for biased locking
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   173
void* Thread::allocate(size_t size, bool throw_excpt, MEMFLAGS flags) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   174
  if (UseBiasedLocking) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   175
    const int alignment = markOopDesc::biased_lock_alignment;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   176
    size_t aligned_size = size + (alignment - sizeof(intptr_t));
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   177
    void* real_malloc_addr = throw_excpt? AllocateHeap(aligned_size, flags, CURRENT_PC)
14083
103054a71a30 8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents: 13978
diff changeset
   178
                                          : AllocateHeap(aligned_size, flags, CURRENT_PC,
103054a71a30 8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents: 13978
diff changeset
   179
                                              AllocFailStrategy::RETURN_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   180
    void* aligned_addr     = (void*) align_size_up((intptr_t) real_malloc_addr, alignment);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   181
    assert(((uintptr_t) aligned_addr + (uintptr_t) size) <=
489c9b5090e2 Initial load
duke
parents:
diff changeset
   182
           ((uintptr_t) real_malloc_addr + (uintptr_t) aligned_size),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   183
           "JavaThread alignment code overflowed allocated storage");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   184
    if (TraceBiasedLocking) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   185
      if (aligned_addr != real_malloc_addr)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   186
        tty->print_cr("Aligned thread " INTPTR_FORMAT " to " INTPTR_FORMAT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   187
                      real_malloc_addr, aligned_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   188
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   189
    ((Thread*) aligned_addr)->_real_malloc_address = real_malloc_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   190
    return aligned_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   191
  } else {
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   192
    return throw_excpt? AllocateHeap(size, flags, CURRENT_PC)
14083
103054a71a30 8000617: It should be possible to allocate memory without the VM dying.
nloodin
parents: 13978
diff changeset
   193
                       : AllocateHeap(size, flags, CURRENT_PC, AllocFailStrategy::RETURN_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   194
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   195
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   196
489c9b5090e2 Initial load
duke
parents:
diff changeset
   197
void Thread::operator delete(void* p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   198
  if (UseBiasedLocking) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   199
    void* real_malloc_addr = ((Thread*) p)->_real_malloc_address;
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   200
    FreeHeap(real_malloc_addr, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   201
  } else {
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   202
    FreeHeap(p, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   203
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   204
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   205
489c9b5090e2 Initial load
duke
parents:
diff changeset
   206
489c9b5090e2 Initial load
duke
parents:
diff changeset
   207
// Base class for all threads: VMThread, WatcherThread, ConcurrentMarkSweepThread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   208
// JavaThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   209
489c9b5090e2 Initial load
duke
parents:
diff changeset
   210
489c9b5090e2 Initial load
duke
parents:
diff changeset
   211
Thread::Thread() {
7724
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   212
  // stack and get_thread
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   213
  set_stack_base(NULL);
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   214
  set_stack_size(0);
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   215
  set_self_raw_id(0);
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   216
  set_lgrp_id(-1);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   217
489c9b5090e2 Initial load
duke
parents:
diff changeset
   218
  // allocated data structures
7724
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   219
  set_osthread(NULL);
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   220
  set_resource_area(new (mtThread)ResourceArea());
18928
ac0163dd0a50 7143807: ResourceMark nesting problem in stringStream
fparain
parents: 18687
diff changeset
   221
  DEBUG_ONLY(_current_resource_mark = NULL;)
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   222
  set_handle_area(new (mtThread) HandleArea(NULL));
18432
037577e626b1 8008964: NPG: Memory regression: Thread::_metadata_handles uses 1 KB per thread.
iklam
parents: 18025
diff changeset
   223
  set_metadata_handles(new (ResourceObj::C_HEAP, mtClass) GrowableArray<Metadata*>(30, true));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   224
  set_active_handles(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   225
  set_free_handle_block(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   226
  set_last_handle_mark(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   227
489c9b5090e2 Initial load
duke
parents:
diff changeset
   228
  // This initial value ==> never claimed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   229
  _oops_do_parity = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   230
489c9b5090e2 Initial load
duke
parents:
diff changeset
   231
  // the handle mark links itself to last_handle_mark
17031
9a576749065b 8012907: anti-delta fix for 8010992
dcubed
parents: 17026
diff changeset
   232
  new HandleMark(this);
9a576749065b 8012907: anti-delta fix for 8010992
dcubed
parents: 17026
diff changeset
   233
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   234
  // plain initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
   235
  debug_only(_owned_locks = NULL;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   236
  debug_only(_allow_allocation_count = 0;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   237
  NOT_PRODUCT(_allow_safepoint_count = 0;)
2995
d8283445992a 6820167: GCALotAtAllSafepoints + FullGCALot(ScavengeALot) options crash JVM
ysr
parents: 2526
diff changeset
   238
  NOT_PRODUCT(_skip_gcalot = false;)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   239
  CHECK_UNHANDLED_OOPS_ONLY(_gc_locked_out_count = 0;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   240
  _jvmti_env_iteration_count = 0;
7724
a92d706dbdd5 7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents: 7439
diff changeset
   241
  set_allocated_bytes(0);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   242
  _vm_operation_started_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   243
  _vm_operation_completed_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   244
  _current_pending_monitor = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   245
  _current_pending_monitor_is_from_java = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   246
  _current_waiting_monitor = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   247
  _num_nested_signal = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   248
  omFreeList = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   249
  omFreeCount = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   250
  omFreeProvision = 32 ;
5710
d664086c0add 6852873: Reduce safepoint cleanup time
acorn
parents: 5085
diff changeset
   251
  omInUseList = NULL ;
d664086c0add 6852873: Reduce safepoint cleanup time
acorn
parents: 5085
diff changeset
   252
  omInUseCount = 0 ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   253
12108
b2ee55606008 7150390: JFR test crashed on assert(_jni_lock_count == count) failed: must be equal
never
parents: 11776
diff changeset
   254
#ifdef ASSERT
b2ee55606008 7150390: JFR test crashed on assert(_jni_lock_count == count) failed: must be equal
never
parents: 11776
diff changeset
   255
  _visited_for_critical_count = false;
b2ee55606008 7150390: JFR test crashed on assert(_jni_lock_count == count) failed: must be equal
never
parents: 11776
diff changeset
   256
#endif
b2ee55606008 7150390: JFR test crashed on assert(_jni_lock_count == count) failed: must be equal
never
parents: 11776
diff changeset
   257
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   258
  _SR_lock = new Monitor(Mutex::suspend_resume, "SR_lock", true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   259
  _suspend_flags = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   260
489c9b5090e2 Initial load
duke
parents:
diff changeset
   261
  // thread-specific hashCode stream generator state - Marsaglia shift-xor form
489c9b5090e2 Initial load
duke
parents:
diff changeset
   262
  _hashStateX = os::random() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   263
  _hashStateY = 842502087 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   264
  _hashStateZ = 0x8767 ;    // (int)(3579807591LL & 0xffff) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   265
  _hashStateW = 273326509 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   266
489c9b5090e2 Initial load
duke
parents:
diff changeset
   267
  _OnTrap   = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   268
  _schedctl = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   269
  _Stalled  = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   270
  _TypeTag  = 0x2BAD ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   271
489c9b5090e2 Initial load
duke
parents:
diff changeset
   272
  // Many of the following fields are effectively final - immutable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   273
  // Note that nascent threads can't use the Native Monitor-Mutex
489c9b5090e2 Initial load
duke
parents:
diff changeset
   274
  // construct until the _MutexEvent is initialized ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
   275
  // CONSIDER: instead of using a fixed set of purpose-dedicated ParkEvents
489c9b5090e2 Initial load
duke
parents:
diff changeset
   276
  // we might instead use a stack of ParkEvents that we could provision on-demand.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   277
  // The stack would act as a cache to avoid calls to ParkEvent::Allocate()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   278
  // and ::Release()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   279
  _ParkEvent   = ParkEvent::Allocate (this) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   280
  _SleepEvent  = ParkEvent::Allocate (this) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   281
  _MutexEvent  = ParkEvent::Allocate (this) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   282
  _MuxEvent    = ParkEvent::Allocate (this) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   283
489c9b5090e2 Initial load
duke
parents:
diff changeset
   284
#ifdef CHECK_UNHANDLED_OOPS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   285
  if (CheckUnhandledOops) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   286
    _unhandled_oops = new UnhandledOops(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   287
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   288
#endif // CHECK_UNHANDLED_OOPS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   289
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   290
  if (UseBiasedLocking) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   291
    assert((((uintptr_t) this) & (markOopDesc::biased_lock_alignment - 1)) == 0, "forced alignment of thread object failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   292
    assert(this == _real_malloc_address ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   293
           this == (void*) align_size_up((intptr_t) _real_malloc_address, markOopDesc::biased_lock_alignment),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   294
           "bug in forced alignment of thread objects");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   295
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   296
#endif /* ASSERT */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   297
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   298
489c9b5090e2 Initial load
duke
parents:
diff changeset
   299
void Thread::initialize_thread_local_storage() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   300
  // Note: Make sure this method only calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   301
  // non-blocking operations. Otherwise, it might not work
489c9b5090e2 Initial load
duke
parents:
diff changeset
   302
  // with the thread-startup/safepoint interaction.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   303
489c9b5090e2 Initial load
duke
parents:
diff changeset
   304
  // During Java thread startup, safepoint code should allow this
489c9b5090e2 Initial load
duke
parents:
diff changeset
   305
  // method to complete because it may need to allocate memory to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   306
  // store information for the new thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   307
489c9b5090e2 Initial load
duke
parents:
diff changeset
   308
  // initialize structure dependent on thread local storage
489c9b5090e2 Initial load
duke
parents:
diff changeset
   309
  ThreadLocalStorage::set_thread(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   310
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   311
489c9b5090e2 Initial load
duke
parents:
diff changeset
   312
void Thread::record_stack_base_and_size() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   313
  set_stack_base(os::current_stack_base());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   314
  set_stack_size(os::current_stack_size());
13859
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   315
  // CR 7190089: on Solaris, primordial thread's stack is adjusted
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   316
  // in initialize_thread(). Without the adjustment, stack size is
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   317
  // incorrect if stack is set to unlimited (ulimit -s unlimited).
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   318
  // So far, only Solaris has real implementation of initialize_thread().
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   319
  //
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   320
  // set up any platform-specific state.
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   321
  os::initialize_thread(this);
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   322
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
   323
#if INCLUDE_NMT
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
   324
  // record thread's native stack, stack grows downward
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
   325
  address stack_low_addr = stack_base() - stack_size();
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
   326
  MemTracker::record_thread_stack(stack_low_addr, stack_size(), this,
13859
7fe4578493fc 7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents: 13748
diff changeset
   327
      CURRENT_PC);
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
   328
#endif // INCLUDE_NMT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   329
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   330
489c9b5090e2 Initial load
duke
parents:
diff changeset
   331
489c9b5090e2 Initial load
duke
parents:
diff changeset
   332
Thread::~Thread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   333
  // Reclaim the objectmonitors from the omFreeList of the moribund thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   334
  ObjectSynchronizer::omFlush (this) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   335
13748
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   336
  // stack_base can be NULL if the thread is never started or exited before
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   337
  // record_stack_base_and_size called. Although, we would like to ensure
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   338
  // that all started threads do call record_stack_base_and_size(), there is
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   339
  // not proper way to enforce that.
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
   340
#if INCLUDE_NMT
13748
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   341
  if (_stack_base != NULL) {
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   342
    address low_stack_addr = stack_base() - stack_size();
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   343
    MemTracker::release_thread_stack(low_stack_addr, stack_size(), this);
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
   344
#ifdef ASSERT
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
   345
    set_stack_base(NULL);
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
   346
#endif
13748
c4455a44f974 7198529: NPG: assert with NMT code in Thread destructor
zgu
parents: 13744
diff changeset
   347
  }
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
   348
#endif // INCLUDE_NMT
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
   349
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   350
  // deallocate data structures
489c9b5090e2 Initial load
duke
parents:
diff changeset
   351
  delete resource_area();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   352
  // since the handle marks are using the handle area, we have to deallocated the root
489c9b5090e2 Initial load
duke
parents:
diff changeset
   353
  // handle mark before deallocating the thread's handle area,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   354
  assert(last_handle_mark() != NULL, "check we have an element");
17031
9a576749065b 8012907: anti-delta fix for 8010992
dcubed
parents: 17026
diff changeset
   355
  delete last_handle_mark();
9a576749065b 8012907: anti-delta fix for 8010992
dcubed
parents: 17026
diff changeset
   356
  assert(last_handle_mark() == NULL, "check we have reached the end");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   357
489c9b5090e2 Initial load
duke
parents:
diff changeset
   358
  // It's possible we can encounter a null _ParkEvent, etc., in stillborn threads.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   359
  // We NULL out the fields for good hygiene.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   360
  ParkEvent::Release (_ParkEvent)   ; _ParkEvent   = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   361
  ParkEvent::Release (_SleepEvent)  ; _SleepEvent  = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   362
  ParkEvent::Release (_MutexEvent)  ; _MutexEvent  = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   363
  ParkEvent::Release (_MuxEvent)    ; _MuxEvent    = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   364
489c9b5090e2 Initial load
duke
parents:
diff changeset
   365
  delete handle_area();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   366
  delete metadata_handles();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   367
489c9b5090e2 Initial load
duke
parents:
diff changeset
   368
  // osthread() can be NULL, if creation of thread failed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   369
  if (osthread() != NULL) os::free_thread(osthread());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   370
489c9b5090e2 Initial load
duke
parents:
diff changeset
   371
  delete _SR_lock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   372
489c9b5090e2 Initial load
duke
parents:
diff changeset
   373
  // clear thread local storage if the Thread is deleting itself
489c9b5090e2 Initial load
duke
parents:
diff changeset
   374
  if (this == Thread::current()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   375
    ThreadLocalStorage::set_thread(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   376
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   377
    // In the case where we're not the current thread, invalidate all the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   378
    // caches in case some code tries to get the current thread or the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   379
    // thread that was destroyed, and gets stale information.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
    ThreadLocalStorage::invalidate_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   381
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   382
  CHECK_UNHANDLED_OOPS_ONLY(if (CheckUnhandledOops) delete unhandled_oops();)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   383
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   384
489c9b5090e2 Initial load
duke
parents:
diff changeset
   385
// NOTE: dummy function for assertion purpose.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   386
void Thread::run() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   388
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
// Private method to check for dangling thread pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
void check_for_dangling_thread_pointer(Thread *thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
         "possibility of dangling Thread pointer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
// Tracing method for basic thread operations
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
void Thread::trace(const char* msg, const Thread* const thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  if (!TraceThreadEvents) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
  ThreadCritical tc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  const char *name = "non-Java thread";
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  int prio = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
  if (thread->is_Java_thread()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
      && !thread->is_Compiler_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
    // The Threads_lock must be held to get information about
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
    // this thread but may not be in some situations when
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
    // tracing  thread events.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    bool release_Threads_lock = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    if (!Threads_lock->owned_by_self()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
      Threads_lock->lock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
      release_Threads_lock = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
    JavaThread* jt = (JavaThread *)thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
    name = (char *)jt->get_thread_name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
    oop thread_oop = jt->threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
    if (thread_oop != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
      prio = java_lang_Thread::priority(thread_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
    if (release_Threads_lock) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
      Threads_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  tty->print_cr("Thread::%s " INTPTR_FORMAT " [%lx] %s (prio: %d)", msg, thread, thread->osthread()->thread_id(), name, prio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
ThreadPriority Thread::get_priority(const Thread* const thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
  trace("get priority", thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  ThreadPriority priority;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  // Can return an error!
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  (void)os::get_priority(thread, priority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  assert(MinPriority <= priority && priority <= MaxPriority, "non-Java priority found");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  return priority;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
void Thread::set_priority(Thread* thread, ThreadPriority priority) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  trace("set priority", thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  debug_only(check_for_dangling_thread_pointer(thread);)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  // Can return an error!
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  (void)os::set_priority(thread, priority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
void Thread::start(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  trace("start", thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
  // Start is different from resume in that its safety is guaranteed by context or
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
  // being called from a Java method synchronized on the Thread object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
  if (!DisableStartThread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
    if (thread->is_Java_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
      // Initialize the thread state to RUNNABLE before starting this thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
      // Can not set it after the thread started because we do not know the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
      // exact thread state at that time. It could be in MONITOR_WAIT or
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
      // in SLEEPING or some other state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
      java_lang_Thread::set_thread_status(((JavaThread*)thread)->threadObj(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
                                          java_lang_Thread::RUNNABLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
    os::start_thread(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
// Enqueue a VM_Operation to do the job for us - sometime later
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
void Thread::send_async_exception(oop java_thread, oop java_throwable) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
  VM_ThreadStop* vm_stop = new VM_ThreadStop(java_thread, java_throwable);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  VMThread::execute(vm_stop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
// Check if an external suspend request has completed (or has been
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
// cancelled). Returns true if the thread is externally suspended and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
// false otherwise.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
// The bits parameter returns information about the code path through
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
// the routine. Useful for debugging:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
// set in is_ext_suspend_completed():
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
// 0x00000001 - routine was entered
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
// 0x00000010 - routine return false at end
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
// 0x00000100 - thread exited (return false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
// 0x00000200 - suspend request cancelled (return false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
// 0x00000400 - thread suspended (return true)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
// 0x00001000 - thread is in a suspend equivalent state (return true)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
// 0x00002000 - thread is native and walkable (return true)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
// 0x00004000 - thread is native_trans and walkable (needed retry)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
// set in wait_for_ext_suspend_completion():
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
// 0x00010000 - routine was entered
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
// 0x00020000 - suspend request cancelled before loop (return false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
// 0x00040000 - thread suspended before loop (return true)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
// 0x00080000 - suspend request cancelled in loop (return false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
// 0x00100000 - thread suspended in loop (return true)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
// 0x00200000 - suspend not completed during retry loop (return false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
// Helper class for tracing suspend wait debug bits.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
// 0x00000100 indicates that the target thread exited before it could
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
// self-suspend which is not a wait failure. 0x00000200, 0x00020000 and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
// 0x00080000 each indicate a cancelled suspend request so they don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
// count as wait failures either.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
#define DEBUG_FALSE_BITS (0x00000010 | 0x00200000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
class TraceSuspendDebugBits : public StackObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
  JavaThread * jt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
  bool         is_wait;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  bool         called_by_wait;  // meaningful when !is_wait
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  uint32_t *   bits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
  TraceSuspendDebugBits(JavaThread *_jt, bool _is_wait, bool _called_by_wait,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
                        uint32_t *_bits) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    jt             = _jt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    is_wait        = _is_wait;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
    called_by_wait = _called_by_wait;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    bits           = _bits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
  ~TraceSuspendDebugBits() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
    if (!is_wait) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
#if 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
      // By default, don't trace bits for is_ext_suspend_completed() calls.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
      // That trace is very chatty.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
      if (!called_by_wait) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
        // If tracing for is_ext_suspend_completed() is enabled, then only
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
        // trace calls to it from wait_for_ext_suspend_completion()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
    if (AssertOnSuspendWaitFailure || TraceSuspendWaitFailures) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
      if (bits != NULL && (*bits & DEBUG_FALSE_BITS) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
        MutexLocker ml(Threads_lock);  // needed for get_thread_name()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
        ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
        tty->print_cr(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
            "Failed wait_for_ext_suspend_completion(thread=%s, debug_bits=%x)",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
            jt->get_thread_name(), *bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
        guarantee(!AssertOnSuspendWaitFailure, "external suspend wait failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
#undef DEBUG_FALSE_BITS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
bool JavaThread::is_ext_suspend_completed(bool called_by_wait, int delay, uint32_t *bits) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
  TraceSuspendDebugBits tsdb(this, false /* !is_wait */, called_by_wait, bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  bool did_trans_retry = false;  // only do thread_in_native_trans retry once
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  bool do_trans_retry;           // flag to force the retry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  *bits |= 0x00000001;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
    do_trans_retry = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
    if (is_exiting()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
      // Thread is in the process of exiting. This is always checked
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
      // first to reduce the risk of dereferencing a freed JavaThread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
      *bits |= 0x00000100;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
    if (!is_external_suspend()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
      // Suspend request is cancelled. This is always checked before
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
      // is_ext_suspended() to reduce the risk of a rogue resume
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
      // confusing the thread that made the suspend request.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
      *bits |= 0x00000200;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
    if (is_ext_suspended()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
      // thread is suspended
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
      *bits |= 0x00000400;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
    // Now that we no longer do hard suspends of threads running
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
    // native code, the target thread can be changing thread state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    // while we are in this routine:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
    //   _thread_in_native -> _thread_in_native_trans -> _thread_blocked
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
    // We save a copy of the thread state as observed at this moment
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
    // and make our decision about suspend completeness based on the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
    // copy. This closes the race where the thread state is seen as
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
    // _thread_in_native_trans in the if-thread_blocked check, but is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
    // seen as _thread_blocked in if-thread_in_native_trans check.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
    JavaThreadState save_state = thread_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
    if (save_state == _thread_blocked && is_suspend_equivalent()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
      // If the thread's state is _thread_blocked and this blocking
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
      // condition is known to be equivalent to a suspend, then we can
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
      // consider the thread to be externally suspended. This means that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
      // the code that sets _thread_blocked has been modified to do
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
      // self-suspension if the blocking condition releases. We also
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
      // used to check for CONDVAR_WAIT here, but that is now covered by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
      // the _thread_blocked with self-suspension check.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
      // Return true since we wouldn't be here unless there was still an
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
      // external suspend request.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
      *bits |= 0x00001000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
    } else if (save_state == _thread_in_native && frame_anchor()->walkable()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
      // Threads running native code will self-suspend on native==>VM/Java
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
      // transitions. If its stack is walkable (should always be the case
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
      // unless this function is called before the actual java_suspend()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
      // call), then the wait is done.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
      *bits |= 0x00002000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    } else if (!called_by_wait && !did_trans_retry &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
               save_state == _thread_in_native_trans &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
               frame_anchor()->walkable()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
      // The thread is transitioning from thread_in_native to another
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
      // thread state. check_safepoint_and_suspend_for_native_trans()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
      // will force the thread to self-suspend. If it hasn't gotten
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
      // there yet we may have caught the thread in-between the native
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
      // code check above and the self-suspend. Lucky us. If we were
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
      // called by wait_for_ext_suspend_completion(), then it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
      // will be doing the retries so we don't have to.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
      // Since we use the saved thread state in the if-statement above,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
      // there is a chance that the thread has already transitioned to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
      // _thread_blocked by the time we get here. In that case, we will
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
      // make a single unnecessary pass through the logic below. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
      // doesn't hurt anything since we still do the trans retry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
      *bits |= 0x00004000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
      // Once the thread leaves thread_in_native_trans for another
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
      // thread state, we break out of this retry loop. We shouldn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
      // need this flag to prevent us from getting back here, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
      // sometimes paranoia is good.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
      did_trans_retry = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
      // We wait for the thread to transition to a more usable state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
      for (int i = 1; i <= SuspendRetryCount; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
        // We used to do an "os::yield_all(i)" call here with the intention
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
        // that yielding would increase on each retry. However, the parameter
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
        // is ignored on Linux which means the yield didn't scale up. Waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
        // on the SR_lock below provides a much more predictable scale up for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
        // the delay. It also provides a simple/direct point to check for any
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
        // safepoint requests from the VMThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
        // temporarily drops SR_lock while doing wait with safepoint check
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
        // (if we're a JavaThread - the WatcherThread can also call this)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
        // and increase delay with each retry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
        SR_lock()->wait(!Thread::current()->is_Java_thread(), i * delay);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
        // check the actual thread state instead of what we saved above
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
        if (thread_state() != _thread_in_native_trans) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
          // the thread has transitioned to another thread state so
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
          // try all the checks (except this one) one more time.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
          do_trans_retry = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
          break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
      } // end retry loop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
  } while (do_trans_retry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  *bits |= 0x00000010;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
// Wait for an external suspend request to complete (or be cancelled).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
// Returns true if the thread is externally suspended and false otherwise.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
bool JavaThread::wait_for_ext_suspend_completion(int retries, int delay,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
       uint32_t *bits) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
  TraceSuspendDebugBits tsdb(this, true /* is_wait */,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
                             false /* !called_by_wait */, bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
  // local flag copies to minimize SR_lock hold time
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
  bool is_suspended;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
  bool pending;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
  uint32_t reset_bits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  // set a marker so is_ext_suspend_completed() knows we are the caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  *bits |= 0x00010000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
  // We use reset_bits to reinitialize the bits value at the top of
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
  // each retry loop. This allows the caller to make use of any
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
  // unused bits for their own marking purposes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  reset_bits = *bits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
    MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
    is_suspended = is_ext_suspend_completed(true /* called_by_wait */,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
                                            delay, bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
    pending = is_external_suspend();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  // must release SR_lock to allow suspension to complete
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
  if (!pending) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
    // A cancelled suspend request is the only false return from
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
    // is_ext_suspend_completed() that keeps us from entering the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
    // retry loop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
    *bits |= 0x00020000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
  if (is_suspended) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
    *bits |= 0x00040000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  for (int i = 1; i <= retries; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
    *bits = reset_bits;  // reinit to only track last retry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
    // We used to do an "os::yield_all(i)" call here with the intention
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
    // that yielding would increase on each retry. However, the parameter
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
    // is ignored on Linux which means the yield didn't scale up. Waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
    // on the SR_lock below provides a much more predictable scale up for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
    // the delay. It also provides a simple/direct point to check for any
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
    // safepoint requests from the VMThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
      MutexLocker ml(SR_lock());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
      // wait with safepoint check (if we're a JavaThread - the WatcherThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
      // can also call this)  and increase delay with each retry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
      SR_lock()->wait(!Thread::current()->is_Java_thread(), i * delay);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
      is_suspended = is_ext_suspend_completed(true /* called_by_wait */,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
                                              delay, bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
      // It is possible for the external suspend request to be cancelled
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
      // (by a resume) before the actual suspend operation is completed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
      // Refresh our local copy to see if we still need to wait.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
      pending = is_external_suspend();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
    if (!pending) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
      // A cancelled suspend request is the only false return from
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
      // is_ext_suspend_completed() that keeps us from staying in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
      // retry loop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
      *bits |= 0x00080000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
    if (is_suspended) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
      *bits |= 0x00100000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
  } // end retry loop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
  // thread did not suspend after all our retries
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  *bits |= 0x00200000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
void JavaThread::record_jump(address target, address instr, const char* file, int line) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
  // This should not need to be atomic as the only way for simultaneous
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
  // updates is via interrupts. Even then this should be rare or non-existant
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
  // and we don't care that much anyway.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
  int index = _jmp_ring_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
  _jmp_ring_index = (index + 1 ) & (jump_ring_buffer_size - 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
  _jmp_ring[index]._target = (intptr_t) target;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
  _jmp_ring[index]._instruction = (intptr_t) instr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
  _jmp_ring[index]._file = file;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
  _jmp_ring[index]._line = line;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
#endif /* PRODUCT */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
// Called by flat profiler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
// Callers have already called wait_for_ext_suspend_completion
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
// The assertion for that is currently too complex to put here:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
bool JavaThread::profile_last_Java_frame(frame* _fr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
  bool gotframe = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
  // self suspension saves needed state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
  if (has_last_Java_frame() && _anchor.walkable()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
     *_fr = pd_last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
     gotframe = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
  return gotframe;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
void Thread::interrupt(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  trace("interrupt", thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
  debug_only(check_for_dangling_thread_pointer(thread);)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  os::interrupt(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
bool Thread::is_interrupted(Thread* thread, bool clear_interrupted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
  trace("is_interrupted", thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  debug_only(check_for_dangling_thread_pointer(thread);)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
  // Note:  If clear_interrupted==false, this simply fetches and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  // returns the value of the field osthread()->interrupted().
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
  return os::is_interrupted(thread, clear_interrupted);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
// GC Support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
bool Thread::claim_oops_do_par_case(int strong_roots_parity) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
  jint thread_parity = _oops_do_parity;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
  if (thread_parity != strong_roots_parity) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
    jint res = Atomic::cmpxchg(strong_roots_parity, &_oops_do_parity, thread_parity);
10670
4ea0e7d2ffbc 6484982: G1: process references during evacuation pauses
johnc
parents: 10546
diff changeset
   813
    if (res == thread_parity) {
4ea0e7d2ffbc 6484982: G1: process references during evacuation pauses
johnc
parents: 10546
diff changeset
   814
      return true;
4ea0e7d2ffbc 6484982: G1: process references during evacuation pauses
johnc
parents: 10546
diff changeset
   815
    } else {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
      guarantee(res == strong_roots_parity, "Or else what?");
11174
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
   817
      assert(SharedHeap::heap()->workers()->active_workers() > 0,
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
   818
         "Should only fail when parallel.");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
  }
11174
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
   822
  assert(SharedHeap::heap()->workers()->active_workers() > 0,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
         "Should only fail when parallel.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
   827
void Thread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
  active_handles()->oops_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
  // Do oop for ThreadShadow
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
  f->do_oop((oop*)&_pending_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
  handle_area()->oops_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
   834
void Thread::nmethods_do(CodeBlobClosure* cf) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
   835
  // no nmethods in a generic thread...
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   838
void Thread::metadata_do(void f(Metadata*)) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   839
  if (metadata_handles() != NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   840
    for (int i = 0; i< metadata_handles()->length(); i++) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   841
      f(metadata_handles()->at(i));
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   842
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   843
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   844
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   845
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
void Thread::print_on(outputStream* st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
  // get_priority assumes osthread initialized
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
  if (osthread() != NULL) {
13857
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
   849
    int os_prio;
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
   850
    if (os::get_native_priority(this, &os_prio) == OS_OK) {
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
   851
      st->print("os_prio=%d ", os_prio);
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
   852
    }
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
   853
    st->print("tid=" INTPTR_FORMAT " ", this);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
    osthread()->print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
  debug_only(if (WizardMode) print_owned_locks_on(st);)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
// Thread::print_on_error() is called by fatal error handler. Don't use
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
// any lock or allocate memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
void Thread::print_on_error(outputStream* st, char* buf, int buflen) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
  if      (is_VM_thread())                  st->print("VMThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
  else if (is_Compiler_thread())            st->print("CompilerThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
  else if (is_Java_thread())                st->print("JavaThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
  else if (is_GC_task_thread())             st->print("GCTaskThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
  else if (is_Watcher_thread())             st->print("WatcherThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
  else if (is_ConcurrentGC_thread())        st->print("ConcurrentGCThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
  else st->print("Thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
  st->print(" [stack: " PTR_FORMAT "," PTR_FORMAT "]",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
            _stack_base - _stack_size, _stack_base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
  if (osthread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
    st->print(" [id=%d]", osthread()->thread_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
void Thread::print_owned_locks_on(outputStream* st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
  Monitor *cur = _owned_locks;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  if (cur == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
    st->print(" (no locks) ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
    st->print_cr(" Locks owned:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
    while(cur) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
      cur->print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
      cur = cur->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
static int ref_use_count  = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
bool Thread::owns_locks_but_compiled_lock() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
  for(Monitor *cur = _owned_locks; cur; cur = cur->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
    if (cur != Compile_lock) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
// The flag: potential_vm_operation notifies if this particular safepoint state could potential
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
// invoke the vm-thread (i.e., and oop allocation). In that case, we also have to make sure that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
// no threads which allow_vm_block's are held
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
void Thread::check_for_valid_safepoint_state(bool potential_vm_operation) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
    // Check if current thread is allowed to block at a safepoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
    if (!(_allow_safepoint_count == 0))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
      fatal("Possible safepoint reached by thread that does not allow it");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
    if (is_Java_thread() && ((JavaThread*)this)->thread_state() != _thread_in_vm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
      fatal("LEAF method calling lock?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
    if (potential_vm_operation && is_Java_thread()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
        && !Universe::is_bootstrapping()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
      // Make sure we do not hold any locks that the VM thread also uses.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
      // This could potentially lead to deadlocks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
      for(Monitor *cur = _owned_locks; cur; cur = cur->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
        // Threads_lock is special, since the safepoint synchronization will not start before this is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
        // acquired. Hence, a JavaThread cannot be holding it at a safepoint. So is VMOperationRequest_lock,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
        // since it is used to transfer control between JavaThreads and the VMThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
        // Do not *exclude* any locks unless you are absolutly sure it is correct. Ask someone else first!
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
        if ( (cur->allow_vm_block() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
              cur != Threads_lock &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
              cur != Compile_lock &&               // Temporary: should not be necessary when we get spearate compilation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
              cur != VMOperationRequest_lock &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
              cur != VMOperationQueue_lock) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
              cur->rank() == Mutex::special) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
          warning("Thread holding lock at safepoint that vm can block on: %s", cur->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
    if (GCALotAtAllSafepoints) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
      // We could enter a safepoint here and thus have a gc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
      InterfaceSupport::check_gc_alot();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
bool Thread::is_in_stack(address adr) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
  assert(Thread::current() == this, "is_in_stack can only be called from current thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
  address end = os::current_stack_pointer();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   949
  // Allow non Java threads to call this without stack_base
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   950
  if (_stack_base == NULL) return true;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
  if (stack_base() >= adr && adr >= end) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
18938
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   957
bool Thread::is_in_usable_stack(address adr) const {
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   958
  size_t stack_guard_size = os::uses_stack_guard_pages() ? (StackYellowPages + StackRedPages) * os::vm_page_size() : 0;
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   959
  size_t usable_stack_size = _stack_size - stack_guard_size;
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   960
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   961
  return ((adr < stack_base()) && (adr >= stack_base() - usable_stack_size));
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   962
}
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   963
ff8f8cec9434 8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
rbackman
parents: 18931
diff changeset
   964
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
// We had to move these methods here, because vm threads get into ObjectSynchronizer::enter
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
// However, there is a note in JavaThread::is_lock_owned() about the VM threads not being
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
// used for compilation in the future. If that change is made, the need for these methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
// should be revisited, and they should be removed if possible.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
bool Thread::is_lock_owned(address adr) const {
6183
4c74cfe14f20 6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
kvn
parents: 5888
diff changeset
   971
  return on_local_stack(adr);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
bool Thread::set_as_starting_thread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
 // NOTE: this must be called inside the main thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
  return os::create_main_thread((JavaThread*)this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
   979
static void initialize_class(Symbol* class_name, TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   980
  Klass* klass = SystemDictionary::resolve_or_fail(class_name, true, CHECK);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   981
  InstanceKlass::cast(klass)->initialize(CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
// Creates the initial ThreadGroup
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
static Handle create_initial_thread_group(TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   987
  Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_ThreadGroup(), true, CHECK_NH);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
  instanceKlassHandle klass (THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
  Handle system_instance = klass->allocate_instance_handle(CHECK_NH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
    JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
    JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
                            system_instance,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
                            klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
   996
                            vmSymbols::object_initializer_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
   997
                            vmSymbols::void_method_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
                            CHECK_NH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
  Universe::set_system_thread_group(system_instance());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
  Handle main_instance = klass->allocate_instance_handle(CHECK_NH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
    JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
    Handle string = java_lang_String::create_from_str("main", CHECK_NH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
    JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
                            main_instance,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
                            klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1009
                            vmSymbols::object_initializer_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1010
                            vmSymbols::threadgroup_string_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
                            system_instance,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
                            string,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
                            CHECK_NH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  return main_instance;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
// Creates the initial Thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
static oop create_initial_thread(Handle thread_group, JavaThread* thread, TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1020
  Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
  instanceKlassHandle klass (THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
  instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
  java_lang_Thread::set_thread(thread_oop(), thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
  java_lang_Thread::set_priority(thread_oop(), NormPriority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
  thread->set_threadObj(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
  Handle string = java_lang_String::create_from_str("main", CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
  JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
  JavaCalls::call_special(&result, thread_oop,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
                                   klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1033
                                   vmSymbols::object_initializer_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1034
                                   vmSymbols::threadgroup_string_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
                                   thread_group,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
                                   string,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
                                   CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
  return thread_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
static void call_initializeSystemClass(TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1042
  Klass* k =  SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), true, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
  instanceKlassHandle klass (THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
  JavaValue result(T_VOID);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1046
  JavaCalls::call_static(&result, klass, vmSymbols::initializeSystemClass_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1047
                                         vmSymbols::void_method_signature(), CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
13106
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1050
char java_runtime_name[128] = "";
14289
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1051
char java_runtime_version[128] = "";
13106
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1052
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1053
// extract the JRE name from sun.misc.Version.java_runtime_name
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1054
static const char* get_java_runtime_name(TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1055
  Klass* k = SystemDictionary::find(vmSymbols::sun_misc_Version(),
13106
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1056
                                      Handle(), Handle(), CHECK_AND_CLEAR_NULL);
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1057
  fieldDescriptor fd;
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1058
  bool found = k != NULL &&
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1059
               InstanceKlass::cast(k)->find_local_field(vmSymbols::java_runtime_name_name(),
13106
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1060
                                                        vmSymbols::string_signature(), &fd);
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1061
  if (found) {
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1062
    oop name_oop = k->java_mirror()->obj_field(fd.offset());
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1063
    if (name_oop == NULL)
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1064
      return NULL;
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1065
    const char* name = java_lang_String::as_utf8_string(name_oop,
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1066
                                                        java_runtime_name,
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1067
                                                        sizeof(java_runtime_name));
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1068
    return name;
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1069
  } else {
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1070
    return NULL;
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1071
  }
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1072
}
cecfb99d6cff 7176856: add the JRE name to the error log
twisti
parents: 12373
diff changeset
  1073
14289
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1074
// extract the JRE version from sun.misc.Version.java_runtime_version
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1075
static const char* get_java_runtime_version(TRAPS) {
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1076
  Klass* k = SystemDictionary::find(vmSymbols::sun_misc_Version(),
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1077
                                      Handle(), Handle(), CHECK_AND_CLEAR_NULL);
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1078
  fieldDescriptor fd;
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1079
  bool found = k != NULL &&
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1080
               InstanceKlass::cast(k)->find_local_field(vmSymbols::java_runtime_version_name(),
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1081
                                                        vmSymbols::string_signature(), &fd);
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1082
  if (found) {
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1083
    oop name_oop = k->java_mirror()->obj_field(fd.offset());
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1084
    if (name_oop == NULL)
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1085
      return NULL;
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1086
    const char* name = java_lang_String::as_utf8_string(name_oop,
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1087
                                                        java_runtime_version,
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1088
                                                        sizeof(java_runtime_version));
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1089
    return name;
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1090
  } else {
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1091
    return NULL;
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1092
  }
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1093
}
aec758622b4b 8002078: hs_err_pid file should report full JDK version string
sla
parents: 14120
diff changeset
  1094
7900
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1095
// General purpose hook into Java code, run once when the VM is initialized.
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1096
// The Java library method itself may be changed independently from the VM.
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1097
static void call_postVMInitHook(TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1098
  Klass* k = SystemDictionary::PostVMInitHook_klass();
7900
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1099
  instanceKlassHandle klass (THREAD, k);
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1100
  if (klass.not_null()) {
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1101
    JavaValue result(T_VOID);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1102
    JavaCalls::call_static(&result, klass, vmSymbols::run_method_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1103
                                           vmSymbols::void_method_signature(),
7900
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1104
                                           CHECK);
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1105
  }
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1106
}
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  1107
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
static void reset_vm_info_property(TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
  // the vm info string
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
  ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
  const char *vm_info = VM_Version::vm_info_string();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
  // java.lang.System class
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1114
  Klass* k =  SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), true, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
  instanceKlassHandle klass (THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
  // setProperty arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
  Handle key_str    = java_lang_String::create_from_str("java.vm.info", CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
  Handle value_str  = java_lang_String::create_from_str(vm_info, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
  // return value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
  JavaValue r(T_OBJECT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
  // public static String setProperty(String key, String value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
  JavaCalls::call_static(&r,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
                         klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1127
                         vmSymbols::setProperty_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1128
                         vmSymbols::string_string_string_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
                         key_str,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
                         value_str,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
                         CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
void JavaThread::allocate_threadObj(Handle thread_group, char* thread_name, bool daemon, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
  assert(thread_group.not_null(), "thread group should be specified");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
  assert(threadObj() == NULL, "should only create Java thread object once");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1139
  Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
  instanceKlassHandle klass (THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
  instanceHandle thread_oop = klass->allocate_instance_handle(CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
  java_lang_Thread::set_thread(thread_oop(), this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
  java_lang_Thread::set_priority(thread_oop(), NormPriority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
  set_threadObj(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
  if (thread_name != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
    Handle name = java_lang_String::create_from_str(thread_name, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
    // Thread gets assigned specified name and null target
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
    JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
                            thread_oop,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
                            klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1154
                            vmSymbols::object_initializer_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1155
                            vmSymbols::threadgroup_string_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
                            thread_group, // Argument 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
                            name,         // Argument 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
                            THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
    // Thread gets assigned name "Thread-nnn" and null target
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
    // (java.lang.Thread doesn't have a constructor taking only a ThreadGroup argument)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
    JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
                            thread_oop,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
                            klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1165
                            vmSymbols::object_initializer_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1166
                            vmSymbols::threadgroup_runnable_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
                            thread_group, // Argument 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
                            Handle(),     // Argument 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
                            THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
  if (daemon) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
      java_lang_Thread::set_daemon(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
  if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  1181
  KlassHandle group(this, SystemDictionary::ThreadGroup_klass());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
  Handle threadObj(this, this->threadObj());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
  JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
                         thread_group,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
                         group,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1187
                         vmSymbols::add_method_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1188
                         vmSymbols::thread_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
                         threadObj,          // Arg 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
                         THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
// NamedThread --  non-JavaThread subclasses with multiple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
// uniquely named instances should derive from this.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
NamedThread::NamedThread() : Thread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
  _name = NULL;
4489
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  1199
  _processed_thread = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
NamedThread::~NamedThread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
  if (_name != NULL) {
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1204
    FREE_C_HEAP_ARRAY(char, _name, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
    _name = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
void NamedThread::set_name(const char* format, ...) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
  guarantee(_name == NULL, "Only get to set name once.");
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1211
  _name = NEW_C_HEAP_ARRAY(char, max_name_len, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
  guarantee(_name != NULL, "alloc failure");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
  va_list ap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
  va_start(ap, format);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
  jio_vsnprintf(_name, max_name_len, format, ap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
  va_end(ap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
// ======= WatcherThread ========
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
// The watcher thread exists to simulate timer interrupts.  It should
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
// be replaced by an abstraction over whatever native support for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
// timer interrupts exists on the platform.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
WatcherThread* WatcherThread::_watcher_thread   = NULL;
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1226
bool WatcherThread::_startable = false;
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  1227
volatile bool  WatcherThread::_should_terminate = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
18943
7d0ef675e808 8020701: Avoid crashes in WatcherThread
rbackman
parents: 18938
diff changeset
  1229
WatcherThread::WatcherThread() : Thread(), _crash_protection(NULL) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
  assert(watcher_thread() == NULL, "we can only allocate one WatcherThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
  if (os::create_thread(this, os::watcher_thread)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
    _watcher_thread = this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
    // Set the watcher thread to the highest OS priority which should not be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
    // used, unless a Java thread with priority java.lang.Thread.MAX_PRIORITY
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
    // is created. The only normal thread using this priority is the reference
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
    // handler thread, which runs for very short intervals only.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
    // If the VMThread's priority is not lower than the WatcherThread profiling
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
    // will be inaccurate.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
    os::set_priority(this, MaxPriority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
    if (!DisableStartThread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
      os::start_thread(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1247
int WatcherThread::sleep() const {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1248
  MutexLockerEx ml(PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1249
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1250
  // remaining will be zero if there are no tasks,
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1251
  // causing the WatcherThread to sleep until a task is
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1252
  // enrolled
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1253
  int remaining = PeriodicTask::time_to_wait();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1254
  int time_slept = 0;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1255
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1256
  // we expect this to timeout - we only ever get unparked when
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1257
  // we should terminate or when a new task has been enrolled
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1258
  OSThreadWaitState osts(this->osthread(), false /* not Object.wait() */);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1259
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1260
  jlong time_before_loop = os::javaTimeNanos();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1261
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1262
  for (;;) {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1263
    bool timedout = PeriodicTask_lock->wait(Mutex::_no_safepoint_check_flag, remaining);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1264
    jlong now = os::javaTimeNanos();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1265
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1266
    if (remaining == 0) {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1267
        // if we didn't have any tasks we could have waited for a long time
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1268
        // consider the time_slept zero and reset time_before_loop
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1269
        time_slept = 0;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1270
        time_before_loop = now;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1271
    } else {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1272
        // need to recalulate since we might have new tasks in _tasks
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1273
        time_slept = (int) ((now - time_before_loop) / 1000000);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1274
    }
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1275
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1276
    // Change to task list or spurious wakeup of some kind
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1277
    if (timedout || _should_terminate) {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1278
        break;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1279
    }
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1280
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1281
    remaining = PeriodicTask::time_to_wait();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1282
    if (remaining == 0) {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1283
        // Last task was just disenrolled so loop around and wait until
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1284
        // another task gets enrolled
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1285
        continue;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1286
    }
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1287
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1288
    remaining -= time_slept;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1289
    if (remaining <= 0)
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1290
      break;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1291
  }
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1292
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1293
  return time_slept;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1294
}
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1295
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
void WatcherThread::run() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
  assert(this == watcher_thread(), "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
  this->record_stack_base_and_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
  this->initialize_thread_local_storage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
  this->set_active_handles(JNIHandleBlock::allocate_block());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
  while(!_should_terminate) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
    assert(watcher_thread() == Thread::current(),  "thread consistency check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
    assert(watcher_thread() == this,  "thread consistency check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
    // Calculate how long it'll be until the next PeriodicTask work
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
    // should be done, and sleep that amount of time.
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1308
    int time_waited = sleep();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
    if (is_error_reported()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
      // A fatal error has happened, the error handler(VMError::report_and_die)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
      // should abort JVM after creating an error log file. However in some
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
      // rare cases, the error handler itself might deadlock. Here we try to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
      // kill JVM if the fatal error handler fails to abort in 2 minutes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
      // This code is in WatcherThread because WatcherThread wakes up
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
      // periodically so the fatal error handler doesn't need to do anything;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
      // also because the WatcherThread is less likely to crash than other
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
      // threads.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1320
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
      for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
        if (!ShowMessageBoxOnError
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
         && (OnError == NULL || OnError[0] == '\0')
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
         && Arguments::abort_hook() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
             os::sleep(this, 2 * 60 * 1000, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
             fdStream err(defaultStream::output_fd());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
             err.print_raw_cr("# [ timer expired, abort... ]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
             // skip atexit/vm_exit/vm_abort hooks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
             os::die();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
        // Wake up 5 seconds later, the fatal handler may reset OnError or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
        // ShowMessageBoxOnError when it is ready to abort.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
        os::sleep(this, 5 * 1000, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1338
    PeriodicTask::real_time_tick(time_waited);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
  // Signal that it is terminated
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
    MutexLockerEx mu(Terminator_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
    _watcher_thread = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
    Terminator_lock->notify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
  // Thread destructor usually does this..
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
  ThreadLocalStorage::set_thread(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
void WatcherThread::start() {
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1353
  assert(PeriodicTask_lock->owned_by_self(), "PeriodicTask_lock required");
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1354
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1355
  if (watcher_thread() == NULL && _startable) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
    _should_terminate = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
    // Create the single instance of WatcherThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
    new WatcherThread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1362
void WatcherThread::make_startable() {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1363
  assert(PeriodicTask_lock->owned_by_self(), "PeriodicTask_lock required");
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1364
  _startable = true;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1365
}
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1366
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
void WatcherThread::stop() {
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1368
  {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1369
    MutexLockerEx ml(PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1370
    _should_terminate = true;
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1371
    OrderAccess::fence();  // ensure WatcherThread sees update in main loop
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1372
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1373
    WatcherThread* watcher = watcher_thread();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1374
    if (watcher != NULL)
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1375
      watcher->unpark();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1376
  }
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1377
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
  // it is ok to take late safepoints here, if needed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
  MutexLocker mu(Terminator_lock);
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  1380
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
  while(watcher_thread() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
    // This wait should make safepoint checks, wait without a timeout,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
    // and wait as a suspend-equivalent condition.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
    // Note: If the FlatProfiler is running, then this thread is waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
    // for the WatcherThread to terminate and the WatcherThread, via the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
    // FlatProfiler task, is waiting for the external suspend request on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
    // this thread to complete. wait_for_ext_suspend_completion() will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
    // eventually timeout, but that takes time. Making this wait a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
    // suspend-equivalent condition solves that timeout problem.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
    Terminator_lock->wait(!Mutex::_no_safepoint_check_flag, 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
                          Mutex::_as_suspend_equivalent_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1397
void WatcherThread::unpark() {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1398
  MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ? NULL : PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1399
  PeriodicTask_lock->notify();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1400
}
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  1401
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
void WatcherThread::print_on(outputStream* st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
  st->print("\"%s\" ", name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
  Thread::print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
// ======= JavaThread ========
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
// A JavaThread is a normal Java thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
void JavaThread::initialize() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
  // Initialize fields
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1414
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1415
  // Set the claimed par_id to -1 (ie not claiming any par_ids)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1416
  set_claimed_par_id(-1);
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1417
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
  set_saved_exception_pc(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
  set_threadObj(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
  _anchor.clear();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
  set_entry_point(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
  set_jni_functions(jni_functions());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
  set_callee_target(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
  set_vm_result(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
  set_vm_result_2(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
  set_vframe_array_head(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
  set_vframe_array_last(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
  set_deferred_locals(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
  set_deopt_mark(NULL);
6740
2bc601284215 6986270: guarantee(*bcp != Bytecodes::_monitorenter || exec_mode != Deoptimization::Unpack_exception) fails
iveresov
parents: 6273
diff changeset
  1430
  set_deopt_nmethod(NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
  clear_must_deopt_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
  set_monitor_chunks(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
  set_next(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
  set_thread_state(_thread_new);
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  1435
#if INCLUDE_NMT
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1436
  set_recorder(NULL);
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  1437
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
  _terminated = _not_terminated;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
  _privileged_stack_top = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
  _array_for_gc = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
  _suspend_equivalent = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
  _in_deopt_handler = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
  _doing_unsafe_access = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
  _stack_guard_state = stack_guard_unused;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
  _exception_oop = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
  _exception_pc  = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
  _exception_handler_pc = 0;
7104
0c8b519af363 6990192: VM crashes in ciTypeFlow::get_block_for()
twisti
parents: 6769
diff changeset
  1448
  _is_method_handle_return = 0;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
  _jvmti_thread_state= NULL;
4761
bdb7375a1fee 6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents: 4637
diff changeset
  1450
  _should_post_on_exceptions_flag = JNI_FALSE;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
  _jvmti_get_loaded_classes_closure = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
  _interp_only_mode    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
  _special_runtime_exit_condition = _no_async_condition;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
  _pending_async_exception = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
  _is_compiling = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
  _thread_stat = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
  _thread_stat = new ThreadStatistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
  _blocked_on_compilation = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
  _jni_active_critical = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
  _do_not_unlock_if_synchronized = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
  _cached_monitor_info = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
  _parker = Parker::Allocate(this) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
  _jmp_ring_index = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
  for (int ji = 0 ; ji < jump_ring_buffer_size ; ji++ ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
    record_jump(NULL, NULL, NULL, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
#endif /* PRODUCT */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
  set_thread_profiler(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
  if (FlatProfiler::is_active()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
    // This is where we would decide to either give each thread it's own profiler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
    // or use one global one from FlatProfiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
    // or up to some count of the number of profiled threads, etc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
    ThreadProfiler* pp = new ThreadProfiler();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
    pp->engage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
    set_thread_profiler(pp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
  // Setup safepoint state info for this thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
  ThreadSafepointState::create(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
  debug_only(_java_call_counter = 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
  // JVMTI PopFrame support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
  _popframe_condition = popframe_inactive;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
  _popframe_preserved_args = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
  _popframe_preserved_args_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
  pd_initialize();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1494
#if INCLUDE_ALL_GCS
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1495
SATBMarkQueueSet JavaThread::_satb_mark_queue_set;
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1496
DirtyCardQueueSet JavaThread::_dirty_card_queue_set;
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1497
#endif // INCLUDE_ALL_GCS
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1498
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1499
JavaThread::JavaThread(bool is_attaching_via_jni) :
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1500
  Thread()
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1501
#if INCLUDE_ALL_GCS
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1502
  , _satb_mark_queue(&_satb_mark_queue_set),
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1503
  _dirty_card_queue(&_dirty_card_queue_set)
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1504
#endif // INCLUDE_ALL_GCS
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1505
{
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
  initialize();
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1507
  if (is_attaching_via_jni) {
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1508
    _jni_attach_state = _attaching_via_jni;
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1509
  } else {
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1510
    _jni_attach_state = _not_attaching_via_jni;
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1511
  }
15492
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1512
  assert(deferred_card_mark().is_empty(), "Default MemRegion ctor");
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1513
  _safepoint_visible = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
bool JavaThread::reguard_stack(address cur_sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
  if (_stack_guard_state != stack_guard_yellow_disabled) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
    return true; // Stack already guarded or guard pages not needed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
  if (register_stack_overflow()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
    // For those architectures which have separate register and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
    // memory stacks, we must check the register stack to see if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
    // it has overflowed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
  // Java code never executes within the yellow zone: the latter is only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
  // there to provoke an exception during stack banging.  If java code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
  // is executing there, either StackShadowPages should be larger, or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
  // some exception code in c1, c2 or the interpreter isn't unwinding
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
  // when it should.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
  guarantee(cur_sp > stack_yellow_zone_base(), "not enough space to reguard - increase StackShadowPages");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
  enable_stack_yellow_zone();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
bool JavaThread::reguard_stack(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
  return reguard_stack(os::current_stack_pointer());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
void JavaThread::block_if_vm_exited() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
  if (_terminated == _vm_exited) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
    // _vm_exited is set at safepoint, and Threads_lock is never released
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
    // we will block here forever
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
    Threads_lock->lock_without_safepoint_check();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
// Remove this ifdef when C1 is ported to the compiler interface.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
static void compiler_thread_entry(JavaThread* thread, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1557
JavaThread::JavaThread(ThreadFunction entry_point, size_t stack_sz) :
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1558
  Thread()
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1559
#if INCLUDE_ALL_GCS
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1560
  , _satb_mark_queue(&_satb_mark_queue_set),
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1561
  _dirty_card_queue(&_dirty_card_queue_set)
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1562
#endif // INCLUDE_ALL_GCS
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  1563
{
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
  if (TraceThreadEvents) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
    tty->print_cr("creating thread %p", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
  initialize();
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1568
  _jni_attach_state = _not_attaching_via_jni;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
  set_entry_point(entry_point);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
  // Create the native thread itself.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
  // %note runtime_23
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
  os::ThreadType thr_type = os::java_thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
  thr_type = entry_point == &compiler_thread_entry ? os::compiler_thread :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
                                                     os::java_thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
  os::create_thread(this, thr_type, stack_sz);
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1576
  _safepoint_visible = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
  // The _osthread may be NULL here because we ran out of memory (too many threads active).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
  // We need to throw and OutOfMemoryError - however we cannot do this here because the caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
  // may hold a lock and all locks must be unlocked before throwing the exception (throwing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
  // the exception consists of creating the exception object & initializing it, initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
  // will leave the VM via a JavaCall and then all locks must be unlocked).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
  // The thread is still suspended when we reach here. Thread must be explicit started
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
  // by creator! Furthermore, the thread must also explicitly be added to the Threads list
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
  // by calling Threads:add. The reason why this is not done here, is because the thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
  // object must be fully initialized (take a look at JVM_Start)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
JavaThread::~JavaThread() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
  if (TraceThreadEvents) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
      tty->print_cr("terminate thread %p", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  1594
  // By now, this thread should already be invisible to safepoint,
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  1595
  // and its per-thread recorder also collected.
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1596
  assert(!is_safepoint_visible(), "wrong state");
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  1597
#if INCLUDE_NMT
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  1598
  assert(get_recorder() == NULL, "Already collected");
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  1599
#endif // INCLUDE_NMT
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  1600
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
  // JSR166 -- return the parker to the free list
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
  Parker::Release(_parker);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
  _parker = NULL ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
  // Free any remaining  previous UnrollBlock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
  vframeArray* old_array = vframe_array_last();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
  if (old_array != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
    Deoptimization::UnrollBlock* old_info = old_array->unroll_block();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
    old_array->set_unroll_block(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
    delete old_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
    delete old_array;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
  GrowableArray<jvmtiDeferredLocalVariableSet*>* deferred = deferred_locals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
  if (deferred != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
    // This can only happen if thread is destroyed before deoptimization occurs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
    assert(deferred->length() != 0, "empty array!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
    do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
      jvmtiDeferredLocalVariableSet* dlv = deferred->at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
      deferred->remove_at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
      // individual jvmtiDeferredLocalVariableSet are CHeapObj's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
      delete dlv;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
    } while (deferred->length() != 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
    delete deferred;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
  // All Java related clean up happens in exit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
  ThreadSafepointState::destroy(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
  if (_thread_profiler != NULL) delete _thread_profiler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
  if (_thread_stat != NULL) delete _thread_stat;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
// The first routine called by a new Java thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
void JavaThread::run() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
  // initialize thread-local alloc buffer related fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
  this->initialize_tlab();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
  // used to test validitity of stack trace backs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  this->record_base_of_stack_pointer();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
  // Record real stack base and size.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
  this->record_stack_base_and_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
  // Initialize thread local storage; set before calling MutexLocker
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
  this->initialize_thread_local_storage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  this->create_stack_guard_pages();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  1651
  this->cache_global_variables();
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  1652
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
  // Thread is now sufficient initialized to be handled by the safepoint code as being
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
  // in the VM. Change thread state from _thread_new to _thread_in_vm
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
  ThreadStateTransition::transition_and_fence(this, _thread_new, _thread_in_vm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
  assert(JavaThread::current() == this, "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
  assert(!Thread::current()->owns_locks(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
  DTRACE_THREAD_PROBE(start, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
  // This operation might block. We call that after all safepoint checks for a new thread has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
  // been completed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
  this->set_active_handles(JNIHandleBlock::allocate_block());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
  if (JvmtiExport::should_post_thread_life()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
    JvmtiExport::post_thread_start(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1670
  EventThreadStart event;
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1671
  if (event.should_commit()) {
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1672
     event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1673
     event.commit();
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1674
  }
11480
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1675
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
  // We call another function to do the rest so we are sure that the stack addresses used
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
  // from there will be lower than the stack base just computed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
  thread_main_inner();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
  // Note, thread is no longer valid at this point!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
void JavaThread::thread_main_inner() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
  assert(JavaThread::current() == this, "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
  assert(this->threadObj() != NULL, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
8061
07585870d15f 6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents: 7900
diff changeset
  1688
  // Execute thread entry point unless this thread has a pending exception
07585870d15f 6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents: 7900
diff changeset
  1689
  // or has been stopped before starting.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
  // Note: Due to JVM_StopThread we can have pending exceptions already!
8061
07585870d15f 6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents: 7900
diff changeset
  1691
  if (!this->has_pending_exception() &&
07585870d15f 6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents: 7900
diff changeset
  1692
      !java_lang_Thread::is_stillborn(this->threadObj())) {
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1693
    {
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1694
      ResourceMark rm(this);
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1695
      this->set_native_thread_name(this->get_thread_name());
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  1696
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
    HandleMark hm(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
    this->entry_point()(this, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
  DTRACE_THREAD_PROBE(stop, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
  this->exit(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
  delete this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1707
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
static void ensure_join(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  // We do not need to grap the Threads_lock, since we are operating on ourself.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
  Handle threadObj(thread, thread->threadObj());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
  assert(threadObj.not_null(), "java thread object must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
  ObjectLocker lock(threadObj, thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
  // Ignore pending exception (ThreadDeath), since we are exiting anyway
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
  thread->clear_pending_exception();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
  // Thread is exiting. So set thread_status field in  java.lang.Thread class to TERMINATED.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
  java_lang_Thread::set_thread_status(threadObj(), java_lang_Thread::TERMINATED);
8061
07585870d15f 6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents: 7900
diff changeset
  1717
  // Clear the native thread instance - this makes isAlive return false and allows the join()
07585870d15f 6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents: 7900
diff changeset
  1718
  // to complete once we've done the notify_all below
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
  java_lang_Thread::set_thread(threadObj(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
  lock.notify_all(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
  // Ignore pending exception (ThreadDeath), since we are exiting anyway
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
  thread->clear_pending_exception();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1725
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
// For any new cleanup additions, please check to see if they need to be applied to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
// cleanup_failed_attach_current_thread as well.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
void JavaThread::exit(bool destroy_vm, ExitType exit_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
  assert(this == JavaThread::current(),  "thread consistency check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
  HandleMark hm(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
  Handle uncaught_exception(this, this->pending_exception());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
  this->clear_pending_exception();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
  Handle threadObj(this, this->threadObj());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
  assert(threadObj.not_null(), "Java thread object should be created");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
  if (get_thread_profiler() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
    get_thread_profiler()->disengage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
    ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
    get_thread_profiler()->print(get_thread_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
  // FIXIT: This code should be moved into else part, when reliable 1.2/1.3 check is in place
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
    EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
    CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
  // FIXIT: The is_null check is only so it works better on JDK1.2 VM's. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
  // has to be fixed by a runtime query method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
  if (!destroy_vm || JDK_Version::is_jdk12x_version()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
    // JSR-166: change call from from ThreadGroup.uncaughtException to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
    // java.lang.Thread.dispatchUncaughtException
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
    if (uncaught_exception.not_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
      Handle group(this, java_lang_Thread::threadGroup(threadObj()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
        EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
        // Check if the method Thread.dispatchUncaughtException() exists. If so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
        // call it.  Otherwise we have an older library without the JSR-166 changes,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
        // so call ThreadGroup.uncaughtException()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
        KlassHandle recvrKlass(THREAD, threadObj->klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
        CallInfo callinfo;
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  1764
        KlassHandle thread_klass(THREAD, SystemDictionary::Thread_klass());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
        LinkResolver::resolve_virtual_call(callinfo, threadObj, recvrKlass, thread_klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1766
                                           vmSymbols::dispatchUncaughtException_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1767
                                           vmSymbols::throwable_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
                                           KlassHandle(), false, false, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
        CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
        methodHandle method = callinfo.selected_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
        if (method.not_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
          JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
          JavaCalls::call_virtual(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
                                  threadObj, thread_klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1775
                                  vmSymbols::dispatchUncaughtException_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1776
                                  vmSymbols::throwable_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
                                  uncaught_exception,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
                                  THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
        } else {
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  1780
          KlassHandle thread_group(THREAD, SystemDictionary::ThreadGroup_klass());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
          JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
          JavaCalls::call_virtual(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
                                  group, thread_group,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1784
                                  vmSymbols::uncaughtException_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1785
                                  vmSymbols::thread_throwable_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
                                  threadObj,           // Arg 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
                                  uncaught_exception,  // Arg 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
                                  THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
        }
8115
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1790
        if (HAS_PENDING_EXCEPTION) {
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1791
          ResourceMark rm(this);
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1792
          jio_fprintf(defaultStream::error_stream(),
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1793
                "\nException: %s thrown from the UncaughtExceptionHandler"
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1794
                " in thread \"%s\"\n",
14488
ab48109f7d1b 8001471: Klass::cast() does nothing
hseigel
parents: 14390
diff changeset
  1795
                pending_exception()->klass()->external_name(),
8115
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1796
                get_thread_name());
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1797
          CLEAR_PENDING_EXCEPTION;
1b3ccddac0ab 6472925: OutOfMemoryError fails to generate stack trace as it now ought
coleenp
parents: 8076
diff changeset
  1798
        }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
11480
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1802
    // Called before the java thread exit since we want to read info
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1803
    // from java_lang_Thread object
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1804
    EventThreadEnd event;
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1805
    if (event.should_commit()) {
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1806
        event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1807
        event.commit();
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  1808
    }
11480
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1809
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1810
    // Call after last event on thread
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1811
    EVENT_THREAD_EXIT(this);
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  1812
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
    // Call Thread.exit(). We try 3 times in case we got another Thread.stop during
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
    // the execution of the method. If that is not enough, then we don't really care. Thread.stop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
    // is deprecated anyhow.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
    { int count = 3;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
      while (java_lang_Thread::threadGroup(threadObj()) != NULL && (count-- > 0)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
        EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
        JavaValue result(T_VOID);
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  1820
        KlassHandle thread_klass(THREAD, SystemDictionary::Thread_klass());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
        JavaCalls::call_virtual(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
                              threadObj, thread_klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1823
                              vmSymbols::exit_method_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  1824
                              vmSymbols::void_method_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
                              THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
        CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
    // notify JVMTI
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
    if (JvmtiExport::should_post_thread_life()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
      JvmtiExport::post_thread_end(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
    // We have notified the agents that we are exiting, before we go on,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
    // we must check for a pending external suspend request and honor it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
    // in order to not surprise the thread that made the suspend request.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
    while (true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
        MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
        if (!is_external_suspend()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
          set_terminated(_thread_exiting);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
          ThreadService::current_thread_exiting(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
          break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
        // Implied else:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
        // Things get a little tricky here. We have a pending external
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
        // suspend request, but we are holding the SR_lock so we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
        // can't just self-suspend. So we temporarily drop the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
        // and then self-suspend.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
      ThreadBlockInVM tbivm(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
      java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
      // We're done with this suspend request, but we have to loop around
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
      // and check again. Eventually we will get SR_lock without a pending
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
      // external suspend request and will be able to mark ourselves as
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
      // exiting.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
    // no more external suspends are allowed at this point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
    // before_exit() has already posted JVMTI THREAD_END events
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
  // Notify waiters on thread object. This has to be done after exit() is called
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
  // on the thread (if the thread is the last thread in a daemon ThreadGroup the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
  // group should have the destroyed bit set before waiters are notified).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
  ensure_join(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
  assert(!this->has_pending_exception(), "ensure_join should have cleared");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
  // 6282335 JNI DetachCurrentThread spec states that all Java monitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
  // held by this thread must be released.  A detach operation must only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
  // get here if there are no Java frames on the stack.  Therefore, any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
  // owned monitors at this point MUST be JNI-acquired monitors which are
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
  // pre-inflated and in the monitor cache.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
  // ensure_join() ignores IllegalThreadStateExceptions, and so does this.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
  if (exit_type == jni_detach && JNIDetachReleasesMonitors) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
    assert(!this->has_last_Java_frame(), "detaching with Java frames?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
    ObjectSynchronizer::release_monitors_owned_by_thread(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
    assert(!this->has_pending_exception(), "release_monitors should have cleared");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
  // These things needs to be done while we are still a Java Thread. Make sure that thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
  // is in a consistent state, in case GC happens
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
  assert(_privileged_stack_top == NULL, "must be NULL when we get here");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
  if (active_handles() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
    JNIHandleBlock* block = active_handles();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
    set_active_handles(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
    JNIHandleBlock::release_block(block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
  if (free_handle_block() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
    JNIHandleBlock* block = free_handle_block();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
    set_free_handle_block(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
    JNIHandleBlock::release_block(block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
  // These have to be removed while this is still a valid thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
  remove_stack_guard_pages();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
  if (UseTLAB) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
    tlab().make_parsable(true);  // retire TLAB
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
7897
201a8b00ec91 6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents: 7724
diff changeset
  1908
  if (JvmtiEnv::environments_might_exist()) {
222
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 1
diff changeset
  1909
    JvmtiExport::cleanup_thread(this);
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 1
diff changeset
  1910
  }
3d1795325749 6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
dcubed
parents: 1
diff changeset
  1911
15492
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1912
  // We must flush any deferred card marks before removing a thread from
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1913
  // the list of active threads.
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1914
  Universe::heap()->flush_deferred_store_barrier(this);
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1915
  assert(deferred_card_mark().is_empty(), "Should have been flushed");
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1916
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1917
#if INCLUDE_ALL_GCS
15492
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1918
  // We must flush the G1-related buffers before removing a thread
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1919
  // from the list of active threads. We must do this after any deferred
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1920
  // card marks have been flushed (above) so that any entries that are
7d3684b41115 8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
johnc
parents: 15221
diff changeset
  1921
  // added to the thread's dirty card queue as a result are not lost.
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1922
  if (UseG1GC) {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1923
    flush_barrier_queues();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1924
  }
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1925
#endif // INCLUDE_ALL_GCS
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1926
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
  // Remove from list of active threads list, and notify VM thread if we are the last non-daemon thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
  Threads::remove(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1931
#if INCLUDE_ALL_GCS
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1932
// Flush G1-related queues.
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1933
void JavaThread::flush_barrier_queues() {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1934
  satb_mark_queue().flush();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1935
  dirty_card_queue().flush();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1936
}
6768
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1937
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1938
void JavaThread::initialize_queues() {
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1939
  assert(!SafepointSynchronize::is_at_safepoint(),
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1940
         "we should not be at a safepoint");
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1941
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1942
  ObjPtrQueue& satb_queue = satb_mark_queue();
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1943
  SATBMarkQueueSet& satb_queue_set = satb_mark_queue_set();
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1944
  // The SATB queue should have been constructed with its active
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1945
  // field set to false.
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1946
  assert(!satb_queue.is_active(), "SATB queue should not be active");
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1947
  assert(satb_queue.is_empty(), "SATB queue should be empty");
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1948
  // If we are creating the thread during a marking cycle, we should
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1949
  // set the active field of the SATB queue to true.
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1950
  if (satb_queue_set.is_active()) {
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1951
    satb_queue.set_active(true);
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1952
  }
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1953
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1954
  DirtyCardQueue& dirty_queue = dirty_card_queue();
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1955
  // The dirty card queue should have been constructed with its
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1956
  // active field set to true.
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1957
  assert(dirty_queue.is_active(), "dirty card queue should be active");
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  1958
}
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1959
#endif // INCLUDE_ALL_GCS
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1960
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
void JavaThread::cleanup_failed_attach_current_thread() {
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1962
  if (get_thread_profiler() != NULL) {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1963
    get_thread_profiler()->disengage();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1964
    ResourceMark rm;
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1965
    get_thread_profiler()->print(get_thread_name());
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1966
  }
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1967
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1968
  if (active_handles() != NULL) {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1969
    JNIHandleBlock* block = active_handles();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1970
    set_active_handles(NULL);
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1971
    JNIHandleBlock::release_block(block);
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1972
  }
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1973
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1974
  if (free_handle_block() != NULL) {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1975
    JNIHandleBlock* block = free_handle_block();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1976
    set_free_handle_block(NULL);
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1977
    JNIHandleBlock::release_block(block);
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1978
  }
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1979
5041
5bce37d77dde 6914050: jvm assertion "guard pages must be in use" in -Xcomp mode
coleenp
parents: 4761
diff changeset
  1980
  // These have to be removed while this is still a valid thread.
5bce37d77dde 6914050: jvm assertion "guard pages must be in use" in -Xcomp mode
coleenp
parents: 4761
diff changeset
  1981
  remove_stack_guard_pages();
5bce37d77dde 6914050: jvm assertion "guard pages must be in use" in -Xcomp mode
coleenp
parents: 4761
diff changeset
  1982
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1983
  if (UseTLAB) {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1984
    tlab().make_parsable(true);  // retire TLAB, if any
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1985
  }
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1986
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1987
#if INCLUDE_ALL_GCS
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1988
  if (UseG1GC) {
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1989
    flush_barrier_queues();
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1990
  }
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  1991
#endif // INCLUDE_ALL_GCS
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1992
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1993
  Threads::remove(this);
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1994
  delete this;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
1560
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1998
1b328492b7f8 6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
iveresov
parents: 1415
diff changeset
  1999
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
JavaThread* JavaThread::active() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
  Thread* thread = ThreadLocalStorage::thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
  assert(thread != NULL, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
  if (thread->is_Java_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
    return (JavaThread*) thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
    assert(thread->is_VM_thread(), "this must be a vm thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
    VM_Operation* op = ((VMThread*) thread)->vm_operation();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
    JavaThread *ret=op == NULL ? NULL : (JavaThread *)op->calling_thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
    assert(ret->is_Java_thread(), "must be a Java thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
    return ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
bool JavaThread::is_lock_owned(address adr) const {
2526
39a58a50be35 6699669: Hotspot server leaves synchronized block with monitor in bad state
xlu
parents: 2336
diff changeset
  2015
  if (Thread::is_lock_owned(adr)) return true;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
  for (MonitorChunk* chunk = monitor_chunks(); chunk != NULL; chunk = chunk->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
    if (chunk->contains(adr)) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
void JavaThread::add_monitor_chunk(MonitorChunk* chunk) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
  chunk->set_next(monitor_chunks());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
  set_monitor_chunks(chunk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
void JavaThread::remove_monitor_chunk(MonitorChunk* chunk) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
  guarantee(monitor_chunks() != NULL, "must be non empty");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
  if (monitor_chunks() == chunk) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
    set_monitor_chunks(chunk->next());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
    MonitorChunk* prev = monitor_chunks();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
    while (prev->next() != chunk) prev = prev->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
    prev->set_next(chunk->next());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
// JVM support.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
// Note: this function shouldn't block if it's called in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
// _thread_in_native_trans state (such as from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
// check_special_condition_for_native_trans()).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
void JavaThread::check_and_handle_async_exceptions(bool check_unsafe_error) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
  if (has_last_Java_frame() && has_async_condition()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
    // If we are at a polling page safepoint (not a poll return)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
    // then we must defer async exception because live registers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
    // will be clobbered by the exception path. Poll return is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
    // ok because the call we a returning from already collides
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
    // with exception handling registers and so there is no issue.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
    // (The exception handling path kills call result registers but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
    //  this is ok since the exception kills the result anyway).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
    if (is_at_poll_safepoint()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
      // if the code we are returning to has deoptimized we must defer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
      // the exception otherwise live registers get clobbered on the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
      // exception path before deoptimization is able to retrieve them.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
      RegisterMap map(this, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
      frame caller_fr = last_frame().sender(&map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
      assert(caller_fr.is_compiled_frame(), "what?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
      if (caller_fr.is_deoptimized_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
        if (TraceExceptions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
          ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
          tty->print_cr("deferred async exception at compiled safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
  JavaThread::AsyncRequests condition = clear_special_runtime_exit_condition();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
  if (condition == _no_async_condition) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
    // Conditions have changed since has_special_runtime_exit_condition()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
    // was called:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
    // - if we were here only because of an external suspend request,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
    //   then that was taken care of above (or cancelled) so we are done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
    // - if we were here because of another async request, then it has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
    //   been cleared between the has_special_runtime_exit_condition()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
    //   and now so again we are done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
  // Check for pending async. exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
  if (_pending_async_exception != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
    // Only overwrite an already pending exception, if it is not a threadDeath.
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2090
    if (!has_pending_exception() || !pending_exception()->is_a(SystemDictionary::ThreadDeath_klass())) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
      // We cannot call Exceptions::_throw(...) here because we cannot block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
      set_pending_exception(_pending_async_exception, __FILE__, __LINE__);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
      if (TraceExceptions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
        ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
        tty->print("Async. exception installed at runtime exit (" INTPTR_FORMAT ")", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
        if (has_last_Java_frame() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
          frame f = last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
          tty->print(" (pc: " INTPTR_FORMAT " sp: " INTPTR_FORMAT " )", f.pc(), f.sp());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
        }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2102
        tty->print_cr(" of type: %s", InstanceKlass::cast(_pending_async_exception->klass())->external_name());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
      _pending_async_exception = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
      clear_has_async_exception();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
  if (check_unsafe_error &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
      condition == _async_unsafe_access_error && !has_pending_exception()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
    condition = _no_async_condition;  // done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
    switch (thread_state()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
    case _thread_in_vm:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
        JavaThread* THREAD = this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
        THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in an unsafe memory access operation");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
    case _thread_in_native:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
        ThreadInVMfromNative tiv(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
        JavaThread* THREAD = this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
        THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in an unsafe memory access operation");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
    case _thread_in_Java:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
        ThreadInVMfromJava tiv(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
        JavaThread* THREAD = this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
        THROW_MSG(vmSymbols::java_lang_InternalError(), "a fault occurred in a recent unsafe memory access operation in compiled Java code");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
    default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
      ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
  assert(condition == _no_async_condition || has_pending_exception() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
         (!check_unsafe_error && condition == _async_unsafe_access_error),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2137
         "must have handled the async condition, if no exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
void JavaThread::handle_special_runtime_exit_condition(bool check_asyncs) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
  // Check for pending external suspend. Internal suspend requests do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
  // not use handle_special_runtime_exit_condition().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
  // If JNIEnv proxies are allowed, don't self-suspend if the target
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
  // thread is not the current thread. In older versions of jdbx, jdbx
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
  // threads could call into the VM with another thread's JNIEnv so we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
  // can be here operating on behalf of a suspended thread (4432884).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
  bool do_self_suspend = is_external_suspend_with_lock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
  if (do_self_suspend && (!AllowJNIEnvProxy || this == JavaThread::current())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
    // Because thread is external suspended the safepoint code will count
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
    // thread as at a safepoint. This can be odd because we can be here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
    // as _thread_in_Java which would normally transition to _thread_blocked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2154
    // at a safepoint. We would like to mark the thread as _thread_blocked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2155
    // before calling java_suspend_self like all other callers of it but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
    // we must then observe proper safepoint protocol. (We can't leave
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
    // _thread_blocked with a safepoint in progress). However we can be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2158
    // here as _thread_in_native_trans so we can't use a normal transition
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
    // constructor/destructor pair because they assert on that type of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
    // transition. We could do something like:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
    // JavaThreadState state = thread_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
    // set_thread_state(_thread_in_vm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2164
    // {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
    //   ThreadBlockInVM tbivm(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
    //   java_suspend_self()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
    // }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
    // set_thread_state(_thread_in_vm_trans);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
    // if (safepoint) block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2170
    // set_thread_state(state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2171
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2172
    // but that is pretty messy. Instead we just go with the way the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
    // code has worked before and note that this is the only path to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
    // java_suspend_self that doesn't put the thread in _thread_blocked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
    // mode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
    frame_anchor()->make_walkable(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
    java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
    // We might be here for reasons in addition to the self-suspend request
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
    // so check for other async requests.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
  if (check_asyncs) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
    check_and_handle_async_exceptions();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
void JavaThread::send_thread_stop(oop java_throwable)  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
  assert(Thread::current()->is_VM_thread(), "should be in the vm thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
  assert(Threads_lock->is_locked(), "Threads_lock should be locked by safepoint code");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
  assert(SafepointSynchronize::is_at_safepoint(), "all threads are stopped");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
  // Do not throw asynchronous exceptions against the compiler thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
  // (the compiler thread should not be a Java thread -- fix in 1.4.2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
  if (is_Compiler_thread()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
    // Actually throw the Throwable against the target Thread - however
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
    // only if there is no thread death exception installed already.
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2201
    if (_pending_async_exception == NULL || !_pending_async_exception->is_a(SystemDictionary::ThreadDeath_klass())) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
      // If the topmost frame is a runtime stub, then we are calling into
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
      // OptoRuntime from compiled code. Some runtime stubs (new, monitor_exit..)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
      // must deoptimize the caller before continuing, as the compiled  exception handler table
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
      // may not be valid
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
      if (has_last_Java_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
        frame f = last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
        if (f.is_runtime_frame() || f.is_safepoint_blob_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
          // BiasedLocking needs an updated RegisterMap for the revoke monitors pass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
          RegisterMap reg_map(this, UseBiasedLocking);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
          frame compiled_frame = f.sender(&reg_map);
14835
70896cb93c35 8004741: Missing compiled exception handle table entry for multidimensional array allocation
kvn
parents: 14633
diff changeset
  2212
          if (!StressCompiledExceptionHandlers && compiled_frame.can_be_deoptimized()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
            Deoptimization::deoptimize(this, compiled_frame, &reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
      // Set async. pending exception in thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
      set_pending_async_exception(java_throwable);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
      if (TraceExceptions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
       ResourceMark rm;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2223
       tty->print_cr("Pending Async. exception installed of type: %s", InstanceKlass::cast(_pending_async_exception->klass())->external_name());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
      // for AbortVMOnException flag
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2226
      NOT_PRODUCT(Exceptions::debug_check_abort(InstanceKlass::cast(_pending_async_exception->klass())->external_name()));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
  // Interrupt thread so it will wake up from a potential wait()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
  Thread::interrupt(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
// External suspension mechanism.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
// Tell the VM to suspend a thread when ever it knows that it does not hold on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
// to any VM_locks and it is at a transition
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
// Self-suspension will happen on the transition out of the vm.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
// Catch "this" coming in from JNIEnv pointers when the thread has been freed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
// Guarantees on return:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
//   + Target thread will not execute any new bytecode (that's why we need to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
//     force a safepoint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
//   + Target thread will not enter any new monitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
void JavaThread::java_suspend() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
  { MutexLocker mu(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
    if (!Threads::includes(this) || is_exiting() || this->threadObj() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
       return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
  { MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
    if (!is_external_suspend()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
      // a racing resume has cancelled us; bail out now
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
    // suspend is done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
    uint32_t debug_bits = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
    // Warning: is_ext_suspend_completed() may temporarily drop the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
    // SR_lock to allow the thread to reach a stable thread state if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
    // it is currently in a transient thread state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
    if (is_ext_suspend_completed(false /* !called_by_wait */,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
                                 SuspendRetryDelay, &debug_bits) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
  VM_ForceSafepoint vm_suspend;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
  VMThread::execute(&vm_suspend);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
// Part II of external suspension.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
// A JavaThread self suspends when it detects a pending external suspend
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
// request. This is usually on transitions. It is also done in places
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
// where continuing to the next transition would surprise the caller,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
// e.g., monitor entry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
// Returns the number of times that the thread self-suspended.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
// Note: DO NOT call java_suspend_self() when you just want to block current
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
//       thread. java_suspend_self() is the second stage of cooperative
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
//       suspension for external suspend requests and should only be used
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
//       to complete an external suspend request.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
int JavaThread::java_suspend_self() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
  int ret = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
  // we are in the process of exiting so don't suspend
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
  if (is_exiting()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
     clear_external_suspend();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
     return ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
  assert(_anchor.walkable() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
    (is_Java_thread() && !((JavaThread*)this)->has_last_Java_frame()),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
    "must have walkable stack");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
  MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
3826
67b89f5a5cac 6876794: 4/4 sp07t002 hangs very intermittently
dcubed
parents: 3261
diff changeset
  2303
  assert(!this->is_ext_suspended(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
    "a thread trying to self-suspend should not already be suspended");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2305
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
  if (this->is_suspend_equivalent()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2307
    // If we are self-suspending as a result of the lifting of a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2308
    // suspend equivalent condition, then the suspend_equivalent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
    // flag is not cleared until we set the ext_suspended flag so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
    // that wait_for_ext_suspend_completion() returns consistent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
    // results.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
    this->clear_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2314
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2315
  // A racing resume may have cancelled us before we grabbed SR_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2316
  // above. Or another external suspend request could be waiting for us
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2317
  // by the time we return from SR_lock()->wait(). The thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2318
  // that requested the suspension may already be trying to walk our
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2319
  // stack and if we return now, we can change the stack out from under
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
  // it. This would be a "bad thing (TM)" and cause the stack walker
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
  // to crash. We stay self-suspended until there are no more pending
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
  // external suspend requests.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
  while (is_external_suspend()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
    ret++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
    this->set_ext_suspended();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
    // _ext_suspended flag is cleared by java_resume()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2328
    while (is_ext_suspended()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
      this->SR_lock()->wait(Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2330
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
  return ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
// verify the JavaThread has not yet been published in the Threads::list, and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
// hence doesn't need protection from concurrent access at this stage
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
void JavaThread::verify_not_published() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
  if (!Threads_lock->owned_by_self()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
   MutexLockerEx ml(Threads_lock,  Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
   assert( !Threads::includes(this),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2343
           "java thread shouldn't have been published yet!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
   assert( !Threads::includes(this),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
           "java thread shouldn't have been published yet!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2349
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2350
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
// Slow path when the native==>VM/Java barriers detect a safepoint is in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
// progress or when _suspend_flags is non-zero.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
// Current thread needs to self-suspend if there is a suspend request and/or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2355
// block if a safepoint is in progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2356
// Async exception ISN'T checked.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
// Note only the ThreadInVMfromNative transition can call this function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
// directly and when thread state is _thread_in_native_trans
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
void JavaThread::check_safepoint_and_suspend_for_native_trans(JavaThread *thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
  assert(thread->thread_state() == _thread_in_native_trans, "wrong state");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
  JavaThread *curJT = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
  bool do_self_suspend = thread->is_external_suspend();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2365
  assert(!curJT->has_last_Java_frame() || curJT->frame_anchor()->walkable(), "Unwalkable stack in native->vm transition");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
  // If JNIEnv proxies are allowed, don't self-suspend if the target
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2368
  // thread is not the current thread. In older versions of jdbx, jdbx
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
  // threads could call into the VM with another thread's JNIEnv so we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
  // can be here operating on behalf of a suspended thread (4432884).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
  if (do_self_suspend && (!AllowJNIEnvProxy || curJT == thread)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
    JavaThreadState state = thread->thread_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
    // We mark this thread_blocked state as a suspend-equivalent so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
    // that a caller to is_ext_suspend_completed() won't be confused.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
    // The suspend-equivalent state is cleared by java_suspend_self().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
    thread->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2378
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
    // If the safepoint code sees the _thread_in_native_trans state, it will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
    // wait until the thread changes to other thread state. There is no
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
    // guarantee on how soon we can obtain the SR_lock and complete the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
    // self-suspend request. It would be a bad idea to let safepoint wait for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
    // too long. Temporarily change the state to _thread_blocked to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
    // let the VM thread know that this thread is ready for GC. The problem
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2385
    // of changing thread state is that safepoint could happen just after
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
    // java_suspend_self() returns after being resumed, and VM thread will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2387
    // see the _thread_blocked state. We must check for safepoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
    // after restoring the state and make sure we won't leave while a safepoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
    // is in progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
    thread->set_thread_state(_thread_blocked);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
    thread->java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
    thread->set_thread_state(state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
    // Make sure new state is seen by VM thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
    if (os::is_MP()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
      if (UseMembar) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
        // Force a fence between the write above and read below
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2397
        OrderAccess::fence();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
        // Must use this rather than serialization page in particular on Windows
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
        InterfaceSupport::serialize_memory(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2402
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2404
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
  if (SafepointSynchronize::do_call_back()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
    // If we are safepointing, then block the caller which may not be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
    // the same as the target thread (see above).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
    SafepointSynchronize::block(curJT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
  if (thread->is_deopt_suspend()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
    thread->clear_deopt_suspend();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
    RegisterMap map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2414
    frame f = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2415
    while ( f.id() != thread->must_deopt_id() && ! f.is_first_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2416
      f = f.sender(&map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2417
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2418
    if (f.id() == thread->must_deopt_id()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2419
      thread->clear_must_deopt_id();
6269
10e06287c0b0 6975006: assert(check.is_deoptimized_frame()) failed: missed deopt
never
parents: 6184
diff changeset
  2420
      f.deoptimize(thread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2421
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
      fatal("missed deoptimization!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
// Slow path when the native==>VM/Java barriers detect a safepoint is in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
// progress or when _suspend_flags is non-zero.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
// Current thread needs to self-suspend if there is a suspend request and/or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
// block if a safepoint is in progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2431
// Also check for pending async exception (not including unsafe access error).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2432
// Note only the native==>VM/Java barriers can call this function and when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
// thread state is _thread_in_native_trans.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
void JavaThread::check_special_condition_for_native_trans(JavaThread *thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
  check_safepoint_and_suspend_for_native_trans(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
  if (thread->has_async_exception()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
    // We are in _thread_in_native_trans state, don't handle unsafe
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
    // access error since that may block.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
    thread->check_and_handle_async_exceptions(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2441
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
11637
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2444
// This is a variant of the normal
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2445
// check_special_condition_for_native_trans with slightly different
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2446
// semantics for use by critical native wrappers.  It does all the
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2447
// normal checks but also performs the transition back into
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2448
// thread_in_Java state.  This is required so that critical natives
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2449
// can potentially block and perform a GC if they are the last thread
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2450
// exiting the GC_locker.
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2451
void JavaThread::check_special_condition_for_native_trans_and_transition(JavaThread *thread) {
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2452
  check_special_condition_for_native_trans(thread);
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2453
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2454
  // Finish the transition
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2455
  thread->set_thread_state(_thread_in_Java);
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2456
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2457
  if (thread->do_critical_native_unlock()) {
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2458
    ThreadInVMfromJavaNoAsyncException tiv(thread);
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2459
    GC_locker::unlock_critical(thread);
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2460
    thread->clear_critical_native_unlock();
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2461
  }
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2462
}
030466036615 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 11636
diff changeset
  2463
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
// We need to guarantee the Threads_lock here, since resumes are not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2465
// allowed during safepoint synchronization
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
// Can only resume from an external suspension
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
void JavaThread::java_resume() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
  assert_locked_or_safepoint(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2470
  // Sanity check: thread is gone, has started exiting or the thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
  // was not externally suspended.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
  if (!Threads::includes(this) || is_exiting() || !is_external_suspend()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2476
  MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2477
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
  clear_external_suspend();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
  if (is_ext_suspended()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
    clear_ext_suspended();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
    SR_lock()->notify_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
void JavaThread::create_stack_guard_pages() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
  if (! os::uses_stack_guard_pages() || _stack_guard_state != stack_guard_unused) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2488
  address low_addr = stack_base() - stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
  size_t len = (StackYellowPages + StackRedPages) * os::vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
  int allocate = os::allocate_stack_guard_pages();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2492
  // warning("Guarding at " PTR_FORMAT " for len " SIZE_FORMAT "\n", low_addr, len);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2493
5085
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 5041
diff changeset
  2494
  if (allocate && !os::create_stack_guard_pages((char *) low_addr, len)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
    warning("Attempt to allocate stack guard pages failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2496
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
  if (os::guard_memory((char *) low_addr, len)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
    _stack_guard_state = stack_guard_enabled;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
    warning("Attempt to protect stack guard pages failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
    if (os::uncommit_memory((char *) low_addr, len)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2504
      warning("Attempt to deallocate stack guard pages failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2505
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2506
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2507
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2508
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
void JavaThread::remove_stack_guard_pages() {
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  2510
  assert(Thread::current() == this, "from different thread");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
  if (_stack_guard_state == stack_guard_unused) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
  address low_addr = stack_base() - stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
  size_t len = (StackYellowPages + StackRedPages) * os::vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2514
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
  if (os::allocate_stack_guard_pages()) {
5085
4f0c435f8c3c 6929067: Stack guard pages should be removed when thread is detached
coleenp
parents: 5041
diff changeset
  2516
    if (os::remove_stack_guard_pages((char *) low_addr, len)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
      _stack_guard_state = stack_guard_unused;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2519
      warning("Attempt to deallocate stack guard pages failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2520
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2521
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2522
    if (_stack_guard_state == stack_guard_unused) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2523
    if (os::unguard_memory((char *) low_addr, len)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2524
      _stack_guard_state = stack_guard_unused;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2525
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2526
        warning("Attempt to unprotect stack guard pages failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2527
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2528
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2529
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2530
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2531
void JavaThread::enable_stack_yellow_zone() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2532
  assert(_stack_guard_state != stack_guard_unused, "must be using guard pages.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2533
  assert(_stack_guard_state != stack_guard_enabled, "already enabled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2534
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2535
  // The base notation is from the stacks point of view, growing downward.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2536
  // We need to adjust it to work correctly with guard_memory()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2537
  address base = stack_yellow_zone_base() - stack_yellow_zone_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2538
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2539
  guarantee(base < stack_base(),"Error calculating stack yellow zone");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2540
  guarantee(base < os::current_stack_pointer(),"Error calculating stack yellow zone");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2541
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2542
  if (os::guard_memory((char *) base, stack_yellow_zone_size())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2543
    _stack_guard_state = stack_guard_enabled;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2544
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2545
    warning("Attempt to guard stack yellow zone failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2546
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2547
  enable_register_stack_guard();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2548
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2549
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2550
void JavaThread::disable_stack_yellow_zone() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2551
  assert(_stack_guard_state != stack_guard_unused, "must be using guard pages.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2552
  assert(_stack_guard_state != stack_guard_yellow_disabled, "already disabled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2553
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2554
  // Simply return if called for a thread that does not use guard pages.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2555
  if (_stack_guard_state == stack_guard_unused) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2556
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2557
  // The base notation is from the stacks point of view, growing downward.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2558
  // We need to adjust it to work correctly with guard_memory()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2559
  address base = stack_yellow_zone_base() - stack_yellow_zone_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2560
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2561
  if (os::unguard_memory((char *)base, stack_yellow_zone_size())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2562
    _stack_guard_state = stack_guard_yellow_disabled;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2563
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2564
    warning("Attempt to unguard stack yellow zone failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2565
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2566
  disable_register_stack_guard();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2567
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2568
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2569
void JavaThread::enable_stack_red_zone() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2570
  // The base notation is from the stacks point of view, growing downward.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2571
  // We need to adjust it to work correctly with guard_memory()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2572
  assert(_stack_guard_state != stack_guard_unused, "must be using guard pages.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2573
  address base = stack_red_zone_base() - stack_red_zone_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2574
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2575
  guarantee(base < stack_base(),"Error calculating stack red zone");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2576
  guarantee(base < os::current_stack_pointer(),"Error calculating stack red zone");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2577
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2578
  if(!os::guard_memory((char *) base, stack_red_zone_size())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2579
    warning("Attempt to guard stack red zone failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2580
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2581
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2582
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2583
void JavaThread::disable_stack_red_zone() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2584
  // The base notation is from the stacks point of view, growing downward.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2585
  // We need to adjust it to work correctly with guard_memory()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2586
  assert(_stack_guard_state != stack_guard_unused, "must be using guard pages.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2587
  address base = stack_red_zone_base() - stack_red_zone_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2588
  if (!os::unguard_memory((char *)base, stack_red_zone_size())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2589
    warning("Attempt to unguard stack red zone failed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2590
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2591
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2592
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2593
void JavaThread::frames_do(void f(frame*, const RegisterMap* map)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2594
  // ignore is there is no stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2595
  if (!has_last_Java_frame()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2596
  // traverse the stack frames. Starts from top frame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2597
  for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2598
    frame* fr = fst.current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2599
    f(fr, fst.register_map());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2600
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2601
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2602
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2603
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2604
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2605
// Deoptimization
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2606
// Function for testing deoptimization
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2607
void JavaThread::deoptimize() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2608
  // BiasedLocking needs an updated RegisterMap for the revoke monitors pass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2609
  StackFrameStream fst(this, UseBiasedLocking);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2610
  bool deopt = false;           // Dump stack only if a deopt actually happens.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2611
  bool only_at = strlen(DeoptimizeOnlyAt) > 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2612
  // Iterate over all frames in the thread and deoptimize
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2613
  for(; !fst.is_done(); fst.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2614
    if(fst.current()->can_be_deoptimized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2615
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2616
      if (only_at) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2617
        // Deoptimize only at particular bcis.  DeoptimizeOnlyAt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2618
        // consists of comma or carriage return separated numbers so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2619
        // search for the current bci in that string.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2620
        address pc = fst.current()->pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2621
        nmethod* nm =  (nmethod*) fst.current()->cb();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2622
        ScopeDesc* sd = nm->scope_desc_at( pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2623
        char buffer[8];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2624
        jio_snprintf(buffer, sizeof(buffer), "%d", sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2625
        size_t len = strlen(buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2626
        const char * found = strstr(DeoptimizeOnlyAt, buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2627
        while (found != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2628
          if ((found[len] == ',' || found[len] == '\n' || found[len] == '\0') &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2629
              (found == DeoptimizeOnlyAt || found[-1] == ',' || found[-1] == '\n')) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2630
            // Check that the bci found is bracketed by terminators.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2631
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2632
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2633
          found = strstr(found + 1, buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2634
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2635
        if (!found) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2636
          continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2637
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2638
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2640
      if (DebugDeoptimization && !deopt) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2641
        deopt = true; // One-time only print before deopt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2642
        tty->print_cr("[BEFORE Deoptimization]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2643
        trace_frames();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2644
        trace_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2645
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2646
      Deoptimization::deoptimize(this, *fst.current(), fst.register_map());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2647
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2648
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2649
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2650
  if (DebugDeoptimization && deopt) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2651
    tty->print_cr("[AFTER Deoptimization]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2652
    trace_frames();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2653
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2654
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2655
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2656
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2657
// Make zombies
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2658
void JavaThread::make_zombies() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2659
  for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2660
    if (fst.current()->can_be_deoptimized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2661
      // it is a Java nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2662
      nmethod* nm = CodeCache::find_nmethod(fst.current()->pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2663
      nm->make_not_entrant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2664
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2665
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2666
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2667
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2668
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2669
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2670
void JavaThread::deoptimized_wrt_marked_nmethods() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2671
  if (!has_last_Java_frame()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2672
  // BiasedLocking needs an updated RegisterMap for the revoke monitors pass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2673
  StackFrameStream fst(this, UseBiasedLocking);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2674
  for(; !fst.is_done(); fst.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2675
    if (fst.current()->should_be_deoptimized()) {
13964
01a2b863cc61 7177003: C1: LogCompilation support
vlivanov
parents: 13860
diff changeset
  2676
      if (LogCompilation && xtty != NULL) {
01a2b863cc61 7177003: C1: LogCompilation support
vlivanov
parents: 13860
diff changeset
  2677
        nmethod* nm = fst.current()->cb()->as_nmethod_or_null();
01a2b863cc61 7177003: C1: LogCompilation support
vlivanov
parents: 13860
diff changeset
  2678
        xtty->elem("deoptimized thread='" UINTX_FORMAT "' compile_id='%d'",
01a2b863cc61 7177003: C1: LogCompilation support
vlivanov
parents: 13860
diff changeset
  2679
                   this->name(), nm != NULL ? nm->compile_id() : -1);
01a2b863cc61 7177003: C1: LogCompilation support
vlivanov
parents: 13860
diff changeset
  2680
      }
01a2b863cc61 7177003: C1: LogCompilation support
vlivanov
parents: 13860
diff changeset
  2681
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2682
      Deoptimization::deoptimize(this, *fst.current(), fst.register_map());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2683
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2684
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2685
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2686
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2687
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2688
// GC support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2689
static void frame_gc_epilogue(frame* f, const RegisterMap* map) { f->gc_epilogue(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2690
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2691
void JavaThread::gc_epilogue() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2692
  frames_do(frame_gc_epilogue);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2693
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2694
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2695
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2696
static void frame_gc_prologue(frame* f, const RegisterMap* map) { f->gc_prologue(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2697
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2698
void JavaThread::gc_prologue() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2699
  frames_do(frame_gc_prologue);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2700
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2701
4489
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2702
// If the caller is a NamedThread, then remember, in the current scope,
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2703
// the given JavaThread in its _processed_thread field.
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2704
class RememberProcessedThread: public StackObj {
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2705
  NamedThread* _cur_thr;
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2706
public:
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2707
  RememberProcessedThread(JavaThread* jthr) {
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2708
    Thread* thread = Thread::current();
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2709
    if (thread->is_Named_thread()) {
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2710
      _cur_thr = (NamedThread *)thread;
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2711
      _cur_thr->set_processed_thread(jthr);
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2712
    } else {
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2713
      _cur_thr = NULL;
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2714
    }
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2715
  }
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2716
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2717
  ~RememberProcessedThread() {
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2718
    if (_cur_thr) {
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2719
      _cur_thr->set_processed_thread(NULL);
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2720
    }
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2721
  }
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2722
};
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2723
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  2724
void JavaThread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
4637
af4d405aacc1 6896647: card marks can be deferred too long
ysr
parents: 4573
diff changeset
  2725
  // Verify that the deferred card marks have been flushed.
af4d405aacc1 6896647: card marks can be deferred too long
ysr
parents: 4573
diff changeset
  2726
  assert(deferred_card_mark().is_empty(), "Should be empty during GC");
4030
4c471254865e 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents: 3916
diff changeset
  2727
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2728
  // The ThreadProfiler oops_do is done from FlatProfiler::oops_do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2729
  // since there may be more than one thread using each ThreadProfiler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2730
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2731
  // Traverse the GCHandles
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  2732
  Thread::oops_do(f, cld_f, cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2733
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2734
  assert( (!has_last_Java_frame() && java_call_counter() == 0) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2735
          (has_last_Java_frame() && java_call_counter() > 0), "wrong java_sp info!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2737
  if (has_last_Java_frame()) {
4489
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2738
    // Record JavaThread to GC thread
514173c9a0c2 6361589: Print out stack trace for target thread of GC crash
minqi
parents: 4485
diff changeset
  2739
    RememberProcessedThread rpt(this);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2741
    // Traverse the privileged stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2742
    if (_privileged_stack_top != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2743
      _privileged_stack_top->oops_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2744
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2745
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2746
    // traverse the registered growable array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2747
    if (_array_for_gc != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2748
      for (int index = 0; index < _array_for_gc->length(); index++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2749
        f->do_oop(_array_for_gc->adr_at(index));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2750
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2751
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2752
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2753
    // Traverse the monitor chunks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2754
    for (MonitorChunk* chunk = monitor_chunks(); chunk != NULL; chunk = chunk->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2755
      chunk->oops_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2756
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2758
    // Traverse the execution stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2759
    for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  2760
      fst.current()->oops_do(f, cld_f, cf, fst.register_map());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2761
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2762
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2764
  // callee_target is never live across a gc point so NULL it here should
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2765
  // it still contain a methdOop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2766
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2767
  set_callee_target(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2768
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2769
  assert(vframe_array_head() == NULL, "deopt in progress at a safepoint!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2770
  // If we have deferred set_locals there might be oops waiting to be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2771
  // written
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2772
  GrowableArray<jvmtiDeferredLocalVariableSet*>* list = deferred_locals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2773
  if (list != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2774
    for (int i = 0; i < list->length(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2775
      list->at(i)->oops_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2776
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2777
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2778
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2779
  // Traverse instance variables at the end since the GC may be moving things
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2780
  // around using this function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2781
  f->do_oop((oop*) &_threadObj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2782
  f->do_oop((oop*) &_vm_result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2783
  f->do_oop((oop*) &_exception_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2784
  f->do_oop((oop*) &_pending_async_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2785
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2786
  if (jvmti_thread_state() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2787
    jvmti_thread_state()->oops_do(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2788
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2789
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2790
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
  2791
void JavaThread::nmethods_do(CodeBlobClosure* cf) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
  2792
  Thread::nmethods_do(cf);  // (super method is a no-op)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2793
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2794
  assert( (!has_last_Java_frame() && java_call_counter() == 0) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2795
          (has_last_Java_frame() && java_call_counter() > 0), "wrong java_sp info!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2796
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2797
  if (has_last_Java_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2798
    // Traverse the execution stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2799
    for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
  2800
      fst.current()->nmethods_do(cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2801
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2802
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2803
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2804
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2805
void JavaThread::metadata_do(void f(Metadata*)) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2806
  Thread::metadata_do(f);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2807
  if (has_last_Java_frame()) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2808
    // Traverse the execution stack to call f() on the methods in the stack
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2809
    for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2810
      fst.current()->metadata_do(f);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2811
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2812
  } else if (is_Compiler_thread()) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2813
    // need to walk ciMetadata in current compile tasks to keep alive.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2814
    CompilerThread* ct = (CompilerThread*)this;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2815
    if (ct->env() != NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2816
      ct->env()->metadata_do(f);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2817
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2818
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2819
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2820
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2821
// Printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2822
const char* _get_thread_state_name(JavaThreadState _thread_state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2823
  switch (_thread_state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2824
  case _thread_uninitialized:     return "_thread_uninitialized";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2825
  case _thread_new:               return "_thread_new";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2826
  case _thread_new_trans:         return "_thread_new_trans";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2827
  case _thread_in_native:         return "_thread_in_native";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2828
  case _thread_in_native_trans:   return "_thread_in_native_trans";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2829
  case _thread_in_vm:             return "_thread_in_vm";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2830
  case _thread_in_vm_trans:       return "_thread_in_vm_trans";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2831
  case _thread_in_Java:           return "_thread_in_Java";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2832
  case _thread_in_Java_trans:     return "_thread_in_Java_trans";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2833
  case _thread_blocked:           return "_thread_blocked";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2834
  case _thread_blocked_trans:     return "_thread_blocked_trans";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2835
  default:                        return "unknown thread state";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2836
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2837
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2838
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2839
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2840
void JavaThread::print_thread_state_on(outputStream *st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2841
  st->print_cr("   JavaThread state: %s", _get_thread_state_name(_thread_state));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2842
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2843
void JavaThread::print_thread_state() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2844
  print_thread_state_on(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2845
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2846
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2847
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2848
// Called by Threads::print() for VM_PrintThreads operation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2849
void JavaThread::print_on(outputStream *st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2850
  st->print("\"%s\" ", get_thread_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2851
  oop thread_oop = threadObj();
13857
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  2852
  if (thread_oop != NULL) {
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  2853
    st->print("#" INT64_FORMAT " ", java_lang_Thread::thread_id(thread_oop));
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  2854
    if (java_lang_Thread::is_daemon(thread_oop))  st->print("daemon ");
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  2855
    st->print("prio=%d ", java_lang_Thread::priority(thread_oop));
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  2856
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2857
  Thread::print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2858
  // print guess for valid stack memory region (assume 4K pages); helps lock debugging
2526
39a58a50be35 6699669: Hotspot server leaves synchronized block with monitor in bad state
xlu
parents: 2336
diff changeset
  2859
  st->print_cr("[" INTPTR_FORMAT "]", (intptr_t)last_Java_sp() & ~right_n_bits(12));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2860
  if (thread_oop != NULL && JDK_Version::is_gte_jdk15x_version()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2861
    st->print_cr("   java.lang.Thread.State: %s", java_lang_Thread::thread_status_name(thread_oop));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2862
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2863
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2864
  print_thread_state_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2865
  _safepoint_state->print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2866
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2867
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2868
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2869
// Called by fatal error handler. The difference between this and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2870
// JavaThread::print() is that we can't grab lock or allocate memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2871
void JavaThread::print_on_error(outputStream* st, char *buf, int buflen) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2872
  st->print("JavaThread \"%s\"",  get_thread_name_string(buf, buflen));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2873
  oop thread_obj = threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2874
  if (thread_obj != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2875
     if (java_lang_Thread::is_daemon(thread_obj)) st->print(" daemon");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2876
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2877
  st->print(" [");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2878
  st->print("%s", _get_thread_state_name(_thread_state));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2879
  if (osthread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2880
    st->print(", id=%d", osthread()->thread_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2881
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2882
  st->print(", stack(" PTR_FORMAT "," PTR_FORMAT ")",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2883
            _stack_base - _stack_size, _stack_base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2884
  st->print("]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2885
  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2886
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2887
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2888
// Verification
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2889
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2890
static void frame_verify(frame* f, const RegisterMap *map) { f->verify(map); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2891
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2892
void JavaThread::verify() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2893
  // Verify oops in the thread.
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  2894
  oops_do(&VerifyOopClosure::verify_oop, NULL, NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2895
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2896
  // Verify the stack frames.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2897
  frames_do(frame_verify);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2898
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2899
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2900
// CR 6300358 (sub-CR 2137150)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2901
// Most callers of this method assume that it can't return NULL but a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2902
// thread may not have a name whilst it is in the process of attaching to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2903
// the VM - see CR 6412693, and there are places where a JavaThread can be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2904
// seen prior to having it's threadObj set (eg JNI attaching threads and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2905
// if vm exit occurs during initialization). These cases can all be accounted
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2906
// for such that this method never returns NULL.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2907
const char* JavaThread::get_thread_name() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2908
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2909
  // early safepoints can hit while current thread does not yet have TLS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2910
  if (!SafepointSynchronize::is_at_safepoint()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2911
    Thread *cur = Thread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2912
    if (!(cur->is_Java_thread() && cur == this)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2913
      // Current JavaThreads are allowed to get their own name without
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2914
      // the Threads_lock.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2915
      assert_locked_or_safepoint(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2916
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2917
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2918
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2919
    return get_thread_name_string();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2920
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2921
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2922
// Returns a non-NULL representation of this thread's name, or a suitable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2923
// descriptive string if there is no set name
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2924
const char* JavaThread::get_thread_name_string(char* buf, int buflen) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2925
  const char* name_str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2926
  oop thread_obj = threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2927
  if (thread_obj != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2928
    typeArrayOop name = java_lang_Thread::name(thread_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2929
    if (name != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2930
      if (buf == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2931
        name_str = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2932
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2933
      else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2934
        name_str = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length(), buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2935
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2936
    }
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  2937
    else if (is_attaching_via_jni()) { // workaround for 6412693 - see 6404306
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2938
      name_str = "<no-name - thread is attaching>";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2939
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2940
    else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2941
      name_str = Thread::name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2942
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2943
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2944
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2945
    name_str = Thread::name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2946
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2947
  assert(name_str != NULL, "unexpected NULL thread name");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2948
  return name_str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2949
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2950
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2951
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2952
const char* JavaThread::get_threadgroup_name() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2953
  debug_only(if (JavaThread::current() != this) assert_locked_or_safepoint(Threads_lock);)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2954
  oop thread_obj = threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2955
  if (thread_obj != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2956
    oop thread_group = java_lang_Thread::threadGroup(thread_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2957
    if (thread_group != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2958
      typeArrayOop name = java_lang_ThreadGroup::name(thread_group);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2959
      // ThreadGroup.name can be null
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2960
      if (name != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2961
        const char* str = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2962
        return str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2963
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2964
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2965
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2966
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2967
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2968
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2969
const char* JavaThread::get_parent_name() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2970
  debug_only(if (JavaThread::current() != this) assert_locked_or_safepoint(Threads_lock);)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2971
  oop thread_obj = threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2972
  if (thread_obj != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2973
    oop thread_group = java_lang_Thread::threadGroup(thread_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2974
    if (thread_group != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2975
      oop parent = java_lang_ThreadGroup::parent(thread_group);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2976
      if (parent != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2977
        typeArrayOop name = java_lang_ThreadGroup::name(parent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2978
        // ThreadGroup.name can be null
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2979
        if (name != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2980
          const char* str = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2981
          return str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2982
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2983
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2984
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2985
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2986
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2987
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2988
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2989
ThreadPriority JavaThread::java_priority() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2990
  oop thr_oop = threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2991
  if (thr_oop == NULL) return NormPriority; // Bootstrapping
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2992
  ThreadPriority priority = java_lang_Thread::priority(thr_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2993
  assert(MinPriority <= priority && priority <= MaxPriority, "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2994
  return priority;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2995
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2996
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2997
void JavaThread::prepare(jobject jni_thread, ThreadPriority prio) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2998
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2999
  assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3000
  // Link Java Thread object <-> C++ Thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3001
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3002
  // Get the C++ thread object (an oop) from the JNI handle (a jthread)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3003
  // and put it into a new Handle.  The Handle "thread_oop" can then
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3004
  // be used to pass the C++ thread object to other methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3005
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3006
  // Set the Java level thread object (jthread) field of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3007
  // new thread (a JavaThread *) to C++ thread object using the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3008
  // "thread_oop" handle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3009
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3010
  // Set the thread field (a JavaThread *) of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3011
  // oop representing the java_lang_Thread to the new thread (a JavaThread *).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3013
  Handle thread_oop(Thread::current(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3014
                    JNIHandles::resolve_non_null(jni_thread));
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3015
  assert(InstanceKlass::cast(thread_oop->klass())->is_linked(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3016
    "must be initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3017
  set_threadObj(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3018
  java_lang_Thread::set_thread(thread_oop(), this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3020
  if (prio == NoPriority) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3021
    prio = java_lang_Thread::priority(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3022
    assert(prio != NoPriority, "A valid priority should be present");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3023
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3024
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3025
  // Push the Java priority down to the native thread; needs Threads_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3026
  Thread::set_priority(this, prio);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3028
  // Add the new thread to the Threads list and set it in motion.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3029
  // We must have threads lock in order to call Threads::add.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3030
  // It is crucial that we do not block before the thread is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3031
  // added to the Threads list for if a GC happens, then the java_thread oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3032
  // will not be visited by GC.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3033
  Threads::add(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3034
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3035
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3036
oop JavaThread::current_park_blocker() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3037
  // Support for JSR-166 locks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3038
  oop thread_oop = threadObj();
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3039
  if (thread_oop != NULL &&
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3040
      JDK_Version::current().supports_thread_park_blocker()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3041
    return java_lang_Thread::park_blocker(thread_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3042
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3043
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3044
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3046
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3047
void JavaThread::print_stack_on(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3048
  if (!has_last_Java_frame()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3049
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3050
  HandleMark   hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3052
  RegisterMap reg_map(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3053
  vframe* start_vf = last_java_vframe(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3054
  int count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3055
  for (vframe* f = start_vf; f; f = f->sender() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3056
    if (f->is_java_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3057
      javaVFrame* jvf = javaVFrame::cast(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3058
      java_lang_Throwable::print_stack_element(st, jvf->method(), jvf->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3059
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3060
      // Print out lock information
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3061
      if (JavaMonitorsInStackTrace) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3062
        jvf->print_lock_info_on(st, count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3063
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3064
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3065
      // Ignore non-Java frames
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3066
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3067
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3068
    // Bail-out case for too deep stacks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3069
    count++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3070
    if (MaxJavaStackTraceDepth == count) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3071
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3072
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3073
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3075
// JVMTI PopFrame support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3076
void JavaThread::popframe_preserve_args(ByteSize size_in_bytes, void* start) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3077
  assert(_popframe_preserved_args == NULL, "should not wipe out old PopFrame preserved arguments");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3078
  if (in_bytes(size_in_bytes) != 0) {
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3079
    _popframe_preserved_args = NEW_C_HEAP_ARRAY(char, in_bytes(size_in_bytes), mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3080
    _popframe_preserved_args_size = in_bytes(size_in_bytes);
5883
8dc4bdc132d5 6730276: JDI_REGRESSION tests fail with "Error: count must be non-zero" error on x86
kvn
parents: 5707
diff changeset
  3081
    Copy::conjoint_jbytes(start, _popframe_preserved_args, _popframe_preserved_args_size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3082
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3083
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3084
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3085
void* JavaThread::popframe_preserved_args() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3086
  return _popframe_preserved_args;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3087
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3088
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3089
ByteSize JavaThread::popframe_preserved_args_size() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3090
  return in_ByteSize(_popframe_preserved_args_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3091
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3092
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3093
WordSize JavaThread::popframe_preserved_args_size_in_words() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3094
  int sz = in_bytes(popframe_preserved_args_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3095
  assert(sz % wordSize == 0, "argument size must be multiple of wordSize");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3096
  return in_WordSize(sz / wordSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3097
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3098
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3099
void JavaThread::popframe_free_preserved_args() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3100
  assert(_popframe_preserved_args != NULL, "should not free PopFrame preserved arguments twice");
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3101
  FREE_C_HEAP_ARRAY(char, (char*) _popframe_preserved_args, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3102
  _popframe_preserved_args = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3103
  _popframe_preserved_args_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3104
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3105
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3106
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3107
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3108
void JavaThread::trace_frames() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3109
  tty->print_cr("[Describe stack]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3110
  int frame_no = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3111
  for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3112
    tty->print("  %d. ", frame_no++);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3113
    fst.current()->print_value_on(tty,this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3114
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3115
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3116
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3117
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3118
class PrintAndVerifyOopClosure: public OopClosure {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3119
 protected:
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3120
  template <class T> inline void do_oop_work(T* p) {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3121
    oop obj = oopDesc::load_decode_heap_oop(p);
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3122
    if (obj == NULL) return;
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3123
    tty->print(INTPTR_FORMAT ": ", p);
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3124
    if (obj->is_oop_or_null()) {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3125
      if (obj->is_objArray()) {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3126
        tty->print_cr("valid objArray: " INTPTR_FORMAT, (oopDesc*) obj);
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3127
      } else {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3128
        obj->print();
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3129
      }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3130
    } else {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3131
      tty->print_cr("invalid oop: " INTPTR_FORMAT, (oopDesc*) obj);
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3132
    }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3133
    tty->cr();
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3134
  }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3135
 public:
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3136
  virtual void do_oop(oop* p) { do_oop_work(p); }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3137
  virtual void do_oop(narrowOop* p)  { do_oop_work(p); }
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3138
};
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3139
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3140
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3141
static void oops_print(frame* f, const RegisterMap *map) {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3142
  PrintAndVerifyOopClosure print;
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3143
  f->print_value();
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  3144
  f->oops_do(&print, NULL, NULL, (RegisterMap*)map);
10517
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3145
}
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3146
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3147
// Print our all the locations that contain oops and whether they are
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3148
// valid or not.  This useful when trying to find the oldest frame
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3149
// where an oop has gone bad since the frame walk is from youngest to
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3150
// oldest.
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3151
void JavaThread::trace_oops() {
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3152
  tty->print_cr("[Trace oops]");
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3153
  frames_do(oops_print);
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3154
}
f92c9ff3a15f 7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents: 10508
diff changeset
  3155
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3156
9946
b3d5b50e2289 7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents: 9942
diff changeset
  3157
#ifdef ASSERT
9437
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3158
// Print or validate the layout of stack frames
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3159
void JavaThread::print_frame_layout(int depth, bool validate_only) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3160
  ResourceMark rm;
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3161
  PRESERVE_EXCEPTION_MARK;
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3162
  FrameValues values;
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3163
  int frame_no = 0;
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3164
  for(StackFrameStream fst(this, false); !fst.is_done(); fst.next()) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3165
    fst.current()->describe(values, ++frame_no);
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3166
    if (depth == frame_no) break;
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3167
  }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3168
  if (validate_only) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3169
    values.validate();
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3170
  } else {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3171
    tty->print_cr("[Describe stack layout]");
10966
0c9ed2dfc6a2 7090904: JSR 292: JRuby junit test crashes in PSScavengeRootsClosure::do_oop
twisti
parents: 10740
diff changeset
  3172
    values.print(this);
9437
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3173
  }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3174
}
9946
b3d5b50e2289 7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents: 9942
diff changeset
  3175
#endif
9437
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 8883
diff changeset
  3176
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3177
void JavaThread::trace_stack_from(vframe* start_vf) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3178
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3179
  int vframe_no = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3180
  for (vframe* f = start_vf; f; f = f->sender() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3181
    if (f->is_java_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3182
      javaVFrame::cast(f)->print_activation(vframe_no++);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3183
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3184
      f->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3185
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3186
    if (vframe_no > StackPrintLimit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3187
      tty->print_cr("...<more frames>...");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3188
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3189
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3190
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3191
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3192
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3193
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3194
void JavaThread::trace_stack() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3195
  if (!has_last_Java_frame()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3196
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3197
  HandleMark   hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3198
  RegisterMap reg_map(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3199
  trace_stack_from(last_java_vframe(&reg_map));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3200
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3201
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3202
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3203
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3204
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3205
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3206
javaVFrame* JavaThread::last_java_vframe(RegisterMap *reg_map) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3207
  assert(reg_map != NULL, "a map must be given");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3208
  frame f = last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3209
  for (vframe* vf = vframe::new_vframe(&f, reg_map, this); vf; vf = vf->sender() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3210
    if (vf->is_java_frame()) return javaVFrame::cast(vf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3211
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3212
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3213
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3214
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3215
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3216
Klass* JavaThread::security_get_caller_class(int depth) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3217
  vframeStream vfst(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3218
  vfst.security_get_caller_frame(depth);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3219
  if (!vfst.at_end()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3220
    return vfst.method()->method_holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3221
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3222
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3223
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3224
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3225
static void compiler_thread_entry(JavaThread* thread, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3226
  assert(thread->is_Compiler_thread(), "must be compiler thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3227
  CompileBroker::compiler_thread_loop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3228
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3229
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3230
// Create a CompilerThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3231
CompilerThread::CompilerThread(CompileQueue* queue, CompilerCounters* counters)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3232
: JavaThread(&compiler_thread_entry) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3233
  _env   = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3234
  _log   = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3235
  _task  = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3236
  _queue = queue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3237
  _counters = counters;
5707
6c66849ed24e 6958292: C1: Enable parallel compilation
iveresov
parents: 5547
diff changeset
  3238
  _buffer_blob = NULL;
9942
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3239
  _scanned_nmethod = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3240
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3241
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3242
  _ideal_graph_printer = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3243
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3244
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3245
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  3246
void CompilerThread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  3247
  JavaThread::oops_do(f, cld_f, cf);
9942
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3248
  if (_scanned_nmethod != NULL && cf != NULL) {
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3249
    // Safepoints can occur when the sweeper is scanning an nmethod so
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3250
    // process it here to make sure it isn't unloaded in the middle of
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3251
    // a scan.
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3252
    cf->do_code_blob(_scanned_nmethod);
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3253
  }
2e86734ba620 6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents: 9437
diff changeset
  3254
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3255
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3256
// ======= Threads ========
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3257
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3258
// The Threads class links together all active threads, and provides
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3259
// operations over all threads.  It is protected by its own Mutex
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3260
// lock, which is also used in other contexts to protect thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3261
// operations from having the thread being operated on from exiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3262
// and going away unexpectedly (e.g., safepoint synchronization)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3263
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3264
JavaThread* Threads::_thread_list = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3265
int         Threads::_number_of_threads = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3266
int         Threads::_number_of_non_daemon_threads = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3267
int         Threads::_return_code = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3268
size_t      JavaThread::_stack_size_at_create = 0;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3269
#ifdef ASSERT
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3270
bool        Threads::_vm_complete = false;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3271
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3272
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3273
// All JavaThreads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3274
#define ALL_JAVA_THREADS(X) for (JavaThread* X = _thread_list; X; X = X->next())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3275
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3276
void os_stream();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3277
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3278
// All JavaThreads + all non-JavaThreads (i.e., every thread in the system)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3279
void Threads::threads_do(ThreadClosure* tc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3280
  assert_locked_or_safepoint(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3281
  // ALL_JAVA_THREADS iterates through all JavaThreads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3282
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3283
    tc->do_thread(p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3284
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3285
  // Someday we could have a table or list of all non-JavaThreads.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3286
  // For now, just manually iterate through them.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3287
  tc->do_thread(VMThread::vm_thread());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3288
  Universe::heap()->gc_threads_do(tc);
1127
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3289
  WatcherThread *wt = WatcherThread::watcher_thread();
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3290
  // Strictly speaking, the following NULL check isn't sufficient to make sure
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3291
  // the data for WatcherThread is still valid upon being examined. However,
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3292
  // considering that WatchThread terminates when the VM is on the way to
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3293
  // exit at safepoint, the chance of the above is extremely small. The right
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3294
  // way to prevent termination of WatcherThread would be to acquire
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3295
  // Terminator_lock, but we can't do that without violating the lock rank
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3296
  // checking in some cases.
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3297
  if (wt != NULL)
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3298
    tc->do_thread(wt);
7245ad3ee7ea 6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
xlu
parents: 994
diff changeset
  3299
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3300
  // If CompilerThreads ever become non-JavaThreads, add them here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3301
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3302
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3303
jint Threads::create_vm(JavaVMInitArgs* args, bool* canTryAgain) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3304
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3305
  extern void JDK_Version_init();
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3306
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3307
  // Check version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3308
  if (!is_supported_jni_version(args->version)) return JNI_EVERSION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3309
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3310
  // Initialize the output stream module
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3311
  ostream_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3312
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3313
  // Process java launcher properties.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3314
  Arguments::process_sun_java_launcher_properties(args);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3315
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3316
  // Initialize the os module before using TLS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3317
  os::init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3318
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3319
  // Initialize system properties.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3320
  Arguments::init_system_properties();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3321
950
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3322
  // So that JDK version can be used as a discrimintor when parsing arguments
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3323
  JDK_Version_init();
6112b627bb36 6721093: -XX:AppendRatio=N not supported
kamg
parents: 670
diff changeset
  3324
6961
a32b2fc66321 6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents: 6273
diff changeset
  3325
  // Update/Initialize System properties after JDK version number is known
a32b2fc66321 6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents: 6273
diff changeset
  3326
  Arguments::init_version_specific_system_properties();
a32b2fc66321 6988363: Rebrand vm vendor property settings (jdk7 only)
zgu
parents: 6273
diff changeset
  3327
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3328
  // Parse arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3329
  jint parse_result = Arguments::parse(args);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3330
  if (parse_result != JNI_OK) return parse_result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3331
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3332
  if (PauseAtStartup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3333
    os::pause();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3334
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3335
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3336
#ifndef USDT2
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3337
  HS_DTRACE_PROBE(hotspot, vm__init__begin);
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3338
#else /* USDT2 */
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3339
  HOTSPOT_VM_INIT_BEGIN();
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3340
#endif /* USDT2 */
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3341
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3342
  // Record VM creation timing statistics
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3343
  TraceVmCreationTime create_vm_timer;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3344
  create_vm_timer.start();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3345
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3346
  // Timing (must come after argument parsing)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3347
  TraceTime timer("Create VM", TraceStartupTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3348
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3349
  // Initialize the os module after parsing the args
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3350
  jint os_init_2_result = os::init_2();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3351
  if (os_init_2_result != JNI_OK) return os_init_2_result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3352
14580
3e2316663327 7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents: 14490
diff changeset
  3353
  jint adjust_after_os_result = Arguments::adjust_after_os();
3e2316663327 7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents: 14490
diff changeset
  3354
  if (adjust_after_os_result != JNI_OK) return adjust_after_os_result;
3e2316663327 7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents: 14490
diff changeset
  3355
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3356
  // intialize TLS
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3357
  ThreadLocalStorage::init();
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3358
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3359
  // Bootstrap native memory tracking, so it can start recording memory
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3360
  // activities before worker thread is started. This is the first phase
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3361
  // of bootstrapping, VM is currently running in single-thread mode.
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3362
  MemTracker::bootstrap_single_thread();
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3363
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3364
  // Initialize output stream logging
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3365
  ostream_init_log();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3366
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3367
  // Convert -Xrun to -agentlib: if there is no JVM_OnLoad
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3368
  // Must be before create_vm_init_agents()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3369
  if (Arguments::init_libraries_at_startup()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3370
    convert_vm_init_libraries_to_agents();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3371
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3372
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3373
  // Launch -agentlib/-agentpath and converted -Xrun agents
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3374
  if (Arguments::init_agents_at_startup()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3375
    create_vm_init_agents();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3376
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3377
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3378
  // Initialize Threads state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3379
  _thread_list = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3380
  _number_of_threads = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3381
  _number_of_non_daemon_threads = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3382
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3383
  // Initialize global data structures and create system classes in heap
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3384
  vm_init_globals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3385
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3386
  // Attach the main thread to this os thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3387
  JavaThread* main_thread = new JavaThread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3388
  main_thread->set_thread_state(_thread_in_vm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3389
  // must do this before set_active_handles and initialize_thread_local_storage
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3390
  // Note: on solaris initialize_thread_local_storage() will (indirectly)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3391
  // change the stack size recorded here to one based on the java thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3392
  // stacksize. This adjusted size is what is used to figure the placement
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3393
  // of the guard pages.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3394
  main_thread->record_stack_base_and_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3395
  main_thread->initialize_thread_local_storage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3396
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3397
  main_thread->set_active_handles(JNIHandleBlock::allocate_block());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3398
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3399
  if (!main_thread->set_as_starting_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3400
    vm_shutdown_during_initialization(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3401
      "Failed necessary internal allocation. Out of swap space");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3402
    delete main_thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3403
    *canTryAgain = false; // don't let caller call JNI_CreateJavaVM again
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3404
    return JNI_ENOMEM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3405
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3406
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3407
  // Enable guard page *after* os::create_main_thread(), otherwise it would
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3408
  // crash Linux VM, see notes in os_linux.cpp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3409
  main_thread->create_stack_guard_pages();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3410
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  3411
  // Initialize Java-Level synchronization subsystem
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  3412
  ObjectMonitor::Initialize() ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3413
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3414
  // Second phase of bootstrapping, VM is about entering multi-thread mode
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3415
  MemTracker::bootstrap_multi_thread();
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3416
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3417
  // Initialize global modules
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3418
  jint status = init_globals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3419
  if (status != JNI_OK) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3420
    delete main_thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3421
    *canTryAgain = false; // don't let caller call JNI_CreateJavaVM again
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3422
    return status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3423
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3424
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  3425
  // Should be done after the heap is fully created
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  3426
  main_thread->cache_global_variables();
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  3427
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3428
  HandleMark hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3429
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3430
  { MutexLocker mu(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3431
    Threads::add(main_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3432
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3433
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3434
  // Any JVMTI raw monitors entered in onload will transition into
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3435
  // real raw monitor. VM is setup enough here for raw monitor enter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3436
  JvmtiExport::transition_pending_onload_raw_monitors();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3437
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3438
  // Fully start NMT
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3439
  MemTracker::start();
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3440
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3441
  // Create the VMThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3442
  { TraceTime timer("Start VMThread", TraceStartupTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3443
    VMThread::create();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3444
    Thread* vmthread = VMThread::vm_thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3445
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3446
    if (!os::create_thread(vmthread, os::vm_thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3447
      vm_exit_during_initialization("Cannot create VM thread. Out of system resources.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3448
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3449
    // Wait for the VM thread to become ready, and VMThread::run to initialize
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3450
    // Monitors can have spurious returns, must always check another state flag
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3451
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3452
      MutexLocker ml(Notify_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3453
      os::start_thread(vmthread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3454
      while (vmthread->active_handles() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3455
        Notify_lock->wait();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3456
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3457
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3458
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3459
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3460
  assert (Universe::is_fully_initialized(), "not initialized");
16680
960505df90e7 8011343: Add new flag for verifying the heap during startup
johnc
parents: 16606
diff changeset
  3461
  if (VerifyDuringStartup) {
17112
e49af4ba7755 8013132: Add a flag to turn off the output of the verbose verification code
stefank
parents: 16680
diff changeset
  3462
    // Make sure we're starting with a clean slate.
e49af4ba7755 8013132: Add a flag to turn off the output of the verbose verification code
stefank
parents: 16680
diff changeset
  3463
    VM_Verify verify_op;
16680
960505df90e7 8011343: Add new flag for verifying the heap during startup
johnc
parents: 16606
diff changeset
  3464
    VMThread::execute(&verify_op);
16606
926ac1e006db 8010463: G1: Crashes with -UseTLAB and heap verification
johnc
parents: 16394
diff changeset
  3465
  }
926ac1e006db 8010463: G1: Crashes with -UseTLAB and heap verification
johnc
parents: 16394
diff changeset
  3466
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3467
  EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3468
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3469
  // At this point, the Universe is initialized, but we have not executed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3470
  // any byte code.  Now is a good time (the only time) to dump out the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3471
  // internal state of the JVM for sharing.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3472
  if (DumpSharedSpaces) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3473
    MetaspaceShared::preload_and_dump(CHECK_0);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3474
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3475
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3476
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3477
  // Always call even when there are not JVMTI environments yet, since environments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3478
  // may be attached late and JVMTI must track phases of VM execution
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3479
  JvmtiExport::enter_start_phase();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3480
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3481
  // Notify JVMTI agents that VM has started (JNI is up) - nop if no agents.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3482
  JvmtiExport::post_vm_start();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3483
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3484
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3485
    TraceTime timer("Initialize java.lang classes", TraceStartupTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3486
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3487
    if (EagerXrunInit && Arguments::init_libraries_at_startup()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3488
      create_vm_init_libraries();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3489
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3490
15214
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3491
    initialize_class(vmSymbols::java_lang_String(), CHECK_0);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3492
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3493
    // Initialize java_lang.System (needed before creating the thread)
15214
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3494
    initialize_class(vmSymbols::java_lang_System(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3495
    initialize_class(vmSymbols::java_lang_ThreadGroup(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3496
    Handle thread_group = create_initial_thread_group(CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3497
    Universe::set_main_thread_group(thread_group());
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3498
    initialize_class(vmSymbols::java_lang_Thread(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3499
    oop thread_object = create_initial_thread(thread_group, main_thread, CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3500
    main_thread->set_threadObj(thread_object);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3501
    // Set thread status to running since main thread has
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3502
    // been started and running.
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3503
    java_lang_Thread::set_thread_status(thread_object,
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3504
                                        java_lang_Thread::RUNNABLE);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3505
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3506
    // The VM creates & returns objects of this class. Make sure it's initialized.
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3507
    initialize_class(vmSymbols::java_lang_Class(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3508
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3509
    // The VM preresolves methods to these classes. Make sure that they get initialized
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3510
    initialize_class(vmSymbols::java_lang_reflect_Method(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3511
    initialize_class(vmSymbols::java_lang_ref_Finalizer(),  CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3512
    call_initializeSystemClass(CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3513
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3514
    // get the Java runtime name after java.lang.System is initialized
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3515
    JDK_Version::set_runtime_name(get_java_runtime_name(THREAD));
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3516
    JDK_Version::set_runtime_version(get_java_runtime_version(THREAD));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3517
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3518
    // an instance of OutOfMemory exception has been allocated earlier
15214
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3519
    initialize_class(vmSymbols::java_lang_OutOfMemoryError(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3520
    initialize_class(vmSymbols::java_lang_NullPointerException(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3521
    initialize_class(vmSymbols::java_lang_ClassCastException(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3522
    initialize_class(vmSymbols::java_lang_ArrayStoreException(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3523
    initialize_class(vmSymbols::java_lang_ArithmeticException(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3524
    initialize_class(vmSymbols::java_lang_StackOverflowError(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3525
    initialize_class(vmSymbols::java_lang_IllegalMonitorStateException(), CHECK_0);
1795c6aeb583 8004018: Remove old initialization flags
brutisso
parents: 14844
diff changeset
  3526
    initialize_class(vmSymbols::java_lang_IllegalArgumentException(), CHECK_0);
8883
5569135acca3 6817525: turn on method handle functionality by default for JSR 292
twisti
parents: 8725
diff changeset
  3527
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3528
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3529
  // See        : bugid 4211085.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3530
  // Background : the static initializer of java.lang.Compiler tries to read
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3531
  //              property"java.compiler" and read & write property "java.vm.info".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3532
  //              When a security manager is installed through the command line
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3533
  //              option "-Djava.security.manager", the above properties are not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3534
  //              readable and the static initializer for java.lang.Compiler fails
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3535
  //              resulting in a NoClassDefFoundError.  This can happen in any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3536
  //              user code which calls methods in java.lang.Compiler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3537
  // Hack :       the hack is to pre-load and initialize this class, so that only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3538
  //              system domains are on the stack when the properties are read.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3539
  //              Currently even the AWT code has calls to methods in java.lang.Compiler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3540
  //              On the classic VM, java.lang.Compiler is loaded very early to load the JIT.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3541
  // Future Fix : the best fix is to grant everyone permissions to read "java.compiler" and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3542
  //              read and write"java.vm.info" in the default policy file. See bugid 4211383
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3543
  //              Once that is done, we should remove this hack.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  3544
  initialize_class(vmSymbols::java_lang_Compiler(), CHECK_0);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3545
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3546
  // More hackery - the static initializer of java.lang.Compiler adds the string "nojit" to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3547
  // the java.vm.info property if no jit gets loaded through java.lang.Compiler (the hotspot
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3548
  // compiler does not get loaded through java.lang.Compiler).  "java -version" with the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3549
  // hotspot vm says "nojit" all the time which is confusing.  So, we reset it here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3550
  // This should also be taken out as soon as 4211383 gets fixed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3551
  reset_vm_info_property(CHECK_0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3552
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3553
  quicken_jni_functions();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3554
11776
519643dbbefb 7145243: Need additional specializations for argument parsing framework
fparain
parents: 11637
diff changeset
  3555
  // Must be run after init_ft which initializes ft_enabled
519643dbbefb 7145243: Need additional specializations for argument parsing framework
fparain
parents: 11637
diff changeset
  3556
  if (TRACE_INITIALIZE() != JNI_OK) {
519643dbbefb 7145243: Need additional specializations for argument parsing framework
fparain
parents: 11637
diff changeset
  3557
    vm_exit_during_initialization("Failed to initialize tracing backend");
519643dbbefb 7145243: Need additional specializations for argument parsing framework
fparain
parents: 11637
diff changeset
  3558
  }
519643dbbefb 7145243: Need additional specializations for argument parsing framework
fparain
parents: 11637
diff changeset
  3559
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3560
  // Set flag that basic initialization has completed. Used by exceptions and various
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3561
  // debug stuff, that does not work until all basic classes have been initialized.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3562
  set_init_completed();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3563
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3564
#ifndef USDT2
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3565
  HS_DTRACE_PROBE(hotspot, vm__init__end);
10739
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3566
#else /* USDT2 */
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3567
  HOTSPOT_VM_INIT_END();
91935236600e 7098194: integrate macosx-port changes
dcubed
parents: 10565
diff changeset
  3568
#endif /* USDT2 */
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3569
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3570
  // record VM initialization completion time
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3571
#if INCLUDE_MANAGEMENT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3572
  Management::record_vm_init_completed();
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3573
#endif // INCLUDE_MANAGEMENT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3574
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3575
  // Compute system loader. Note that this has to occur after set_init_completed, since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3576
  // valid exceptions may be thrown in the process.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3577
  // Note that we do not use CHECK_0 here since we are inside an EXCEPTION_MARK and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3578
  // set_init_completed has just been called, causing exceptions not to be shortcut
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3579
  // anymore. We call vm_exit_during_initialization directly instead.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3580
  SystemDictionary::compute_java_system_loader(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3581
  if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3582
    vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3583
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3584
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  3585
#if INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3586
  // Support for ConcurrentMarkSweep. This should be cleaned up
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3587
  // and better encapsulated. The ugly nested if test would go away
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3588
  // once things are properly refactored. XXX YSR
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3589
  if (UseConcMarkSweepGC || UseG1GC) {
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3590
    if (UseConcMarkSweepGC) {
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3591
      ConcurrentMarkSweepThread::makeSurrogateLockerThread(THREAD);
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3592
    } else {
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3593
      ConcurrentMarkThread::makeSurrogateLockerThread(THREAD);
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 235
diff changeset
  3594
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3595
    if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3596
      vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3597
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3598
  }
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  3599
#endif // INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3600
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3601
  // Always call even when there are not JVMTI environments yet, since environments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3602
  // may be attached late and JVMTI must track phases of VM execution
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3603
  JvmtiExport::enter_live_phase();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3605
  // Signal Dispatcher needs to be started before VMInit event is posted
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3606
  os::signal_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3607
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3608
  // Start Attach Listener if +StartAttachListener or it can't be started lazily
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3609
  if (!DisableAttachMechanism) {
18931
5de3638104b4 7162400: Intermittent java.io.IOException: Bad file number during HotSpotVirtualMachine.executeCommand
allwin
parents: 18928
diff changeset
  3610
    AttachListener::vm_start();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3611
    if (StartAttachListener || AttachListener::init_at_startup()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3612
      AttachListener::init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3613
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3614
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3615
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3616
  // Launch -Xrun agents
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3617
  // Must be done in the JVMTI live phase so that for backward compatibility the JDWP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3618
  // back-end can launch with -Xdebug -Xrunjdwp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3619
  if (!EagerXrunInit && Arguments::init_libraries_at_startup()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3620
    create_vm_init_libraries();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3621
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3622
12373
09835f62dc29 7160924: jvmti: GetPhase returns incorrect phase before VMInit event is issued
rbackman
parents: 12108
diff changeset
  3623
  // Notify JVMTI agents that VM initialization is complete - nop if no agents.
09835f62dc29 7160924: jvmti: GetPhase returns incorrect phase before VMInit event is issued
rbackman
parents: 12108
diff changeset
  3624
  JvmtiExport::post_vm_initialized();
09835f62dc29 7160924: jvmti: GetPhase returns incorrect phase before VMInit event is issued
rbackman
parents: 12108
diff changeset
  3625
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  3626
  if (TRACE_START() != JNI_OK) {
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17116
diff changeset
  3627
    vm_exit_during_initialization("Failed to start tracing backend.");
11480
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  3628
  }
1bf714e8adb4 7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents: 11174
diff changeset
  3629
10022
377345fb5fb5 7061204: clean the chunk table synchronously in embedded builds
jcoomes
parents: 9992
diff changeset
  3630
  if (CleanChunkPoolAsync) {
377345fb5fb5 7061204: clean the chunk table synchronously in embedded builds
jcoomes
parents: 9992
diff changeset
  3631
    Chunk::start_chunk_pool_cleaner_task();
377345fb5fb5 7061204: clean the chunk table synchronously in embedded builds
jcoomes
parents: 9992
diff changeset
  3632
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3633
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3634
  // initialize compiler(s)
14622
8e94e4186d35 8003868: fix shark for latest HotSpot and LLVM
twisti
parents: 14490
diff changeset
  3635
#if defined(COMPILER1) || defined(COMPILER2) || defined(SHARK)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3636
  CompileBroker::compilation_init();
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3637
#endif
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3638
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3639
#if INCLUDE_MANAGEMENT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3640
  Management::initialize(THREAD);
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3641
#endif // INCLUDE_MANAGEMENT
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3642
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3643
  if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3644
    // management agent fails to start possibly due to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3645
    // configuration problem and is responsible for printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3646
    // stack trace if appropriate. Simply exit VM.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3647
    vm_exit(1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3648
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3649
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3650
  if (Arguments::has_profile())       FlatProfiler::engage(main_thread, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3651
  if (MemProfiling)                   MemProfiler::engage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3652
  StatSampler::engage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3653
  if (CheckJNICalls)                  JniPeriodicChecker::engage();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3654
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3655
  BiasedLocking::init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3656
7900
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3657
  if (JDK_Version::current().post_vm_init_hook_enabled()) {
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3658
    call_postVMInitHook(THREAD);
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3659
    // The Java side of PostVMInitHook.run must deal with all
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3660
    // exceptions and provide means of diagnosis.
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3661
    if (HAS_PENDING_EXCEPTION) {
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3662
      CLEAR_PENDING_EXCEPTION;
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3663
    }
4c7fc6332f7e 6994753: Implement optional hook to a Java method at VM startup.
kevinw
parents: 7897
diff changeset
  3664
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3665
14390
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3666
  {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3667
      MutexLockerEx ml(PeriodicTask_lock, Mutex::_no_safepoint_check_flag);
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3668
      // Make sure the watcher thread can be started by WatcherThread::start()
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3669
      // or by dynamic enrollment.
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3670
      WatcherThread::make_startable();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3671
      // Start up the WatcherThread if there are any periodic tasks
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3672
      // NOTE:  All PeriodicTasks should be registered by now. If they
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3673
      //   aren't, late joiners might appear to start slowly (we might
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3674
      //   take a while to process their first tick).
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3675
      if (PeriodicTask::num_tasks() > 0) {
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3676
          WatcherThread::start();
bd0d881cf1c5 7127792: Add the ability to change an existing PeriodicTask's execution interval
rbackman
parents: 14289
diff changeset
  3677
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3678
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3679
6176
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  3680
  // Give os specific code one last chance to start
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  3681
  os::init_3();
4d9030fe341f 6953477: Increase portability and flexibility of building Hotspot
bobv
parents: 5888
diff changeset
  3682
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3683
  create_vm_timer.end();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3684
#ifdef ASSERT
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3685
  _vm_complete = true;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3686
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3687
  return JNI_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3688
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3689
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3690
// type for the Agent_OnLoad and JVM_OnLoad entry points
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3691
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3692
  typedef jint (JNICALL *OnLoadEntry_t)(JavaVM *, char *, void *);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3693
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3694
// Find a command line agent library and return its entry point for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3695
//         -agentlib:  -agentpath:   -Xrun
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3696
// num_symbol_entries must be passed-in since only the caller knows the number of symbols in the array.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3697
static OnLoadEntry_t lookup_on_load(AgentLibrary* agent, const char *on_load_symbols[], size_t num_symbol_entries) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3698
  OnLoadEntry_t on_load_entry = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3699
  void *library = agent->os_lib();  // check if we have looked it up before
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3700
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3701
  if (library == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3702
    char buffer[JVM_MAXPATHLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3703
    char ebuf[1024];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3704
    const char *name = agent->name();
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3705
    const char *msg = "Could not find agent library ";
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3706
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3707
    if (agent->is_absolute_path()) {
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3708
      library = os::dll_load(name, ebuf, sizeof ebuf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3709
      if (library == NULL) {
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3710
        const char *sub_msg = " in absolute path, with error: ";
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3711
        size_t len = strlen(msg) + strlen(name) + strlen(sub_msg) + strlen(ebuf) + 1;
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3712
        char *buf = NEW_C_HEAP_ARRAY(char, len, mtThread);
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3713
        jio_snprintf(buf, len, "%s%s%s%s", msg, name, sub_msg, ebuf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3714
        // If we can't find the agent, exit.
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3715
        vm_exit_during_initialization(buf, NULL);
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3716
        FREE_C_HEAP_ARRAY(char, buf, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3717
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3718
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3719
      // Try to load the agent from the standard dll directory
14471
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3720
      if (os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(),
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3721
                             name)) {
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3722
        library = os::dll_load(buffer, ebuf, sizeof ebuf);
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3723
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3724
      if (library == NULL) { // Try the local directory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3725
        char ns[1] = {0};
14471
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3726
        if (os::dll_build_name(buffer, sizeof(buffer), ns, name)) {
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3727
          library = os::dll_load(buffer, ebuf, sizeof ebuf);
f3a6b82e25cf 8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents: 14289
diff changeset
  3728
        }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3729
        if (library == NULL) {
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3730
          const char *sub_msg = " on the library path, with error: ";
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3731
          size_t len = strlen(msg) + strlen(name) + strlen(sub_msg) + strlen(ebuf) + 1;
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3732
          char *buf = NEW_C_HEAP_ARRAY(char, len, mtThread);
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3733
          jio_snprintf(buf, len, "%s%s%s%s", msg, name, sub_msg, ebuf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3734
          // If we can't find the agent, exit.
6189
9dcd5f57dcc3 6378314: Bad warning message when agent library not found. local directory is not searched.
rasbold
parents: 6176
diff changeset
  3735
          vm_exit_during_initialization(buf, NULL);
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3736
          FREE_C_HEAP_ARRAY(char, buf, mtThread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3737
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3738
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3739
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3740
    agent->set_os_lib(library);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3741
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3742
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3743
  // Find the OnLoad function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3744
  for (size_t symbol_index = 0; symbol_index < num_symbol_entries; symbol_index++) {
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3745
    on_load_entry = CAST_TO_FN_PTR(OnLoadEntry_t, os::dll_lookup(library, on_load_symbols[symbol_index]));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3746
    if (on_load_entry != NULL) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3747
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3748
  return on_load_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3749
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3750
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3751
// Find the JVM_OnLoad entry point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3752
static OnLoadEntry_t lookup_jvm_on_load(AgentLibrary* agent) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3753
  const char *on_load_symbols[] = JVM_ONLOAD_SYMBOLS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3754
  return lookup_on_load(agent, on_load_symbols, sizeof(on_load_symbols) / sizeof(char*));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3755
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3756
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3757
// Find the Agent_OnLoad entry point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3758
static OnLoadEntry_t lookup_agent_on_load(AgentLibrary* agent) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3759
  const char *on_load_symbols[] = AGENT_ONLOAD_SYMBOLS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3760
  return lookup_on_load(agent, on_load_symbols, sizeof(on_load_symbols) / sizeof(char*));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3761
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3762
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3763
// For backwards compatibility with -Xrun
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3764
// Convert libraries with no JVM_OnLoad, but which have Agent_OnLoad to be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3765
// treated like -agentpath:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3766
// Must be called before agent libraries are created
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3767
void Threads::convert_vm_init_libraries_to_agents() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3768
  AgentLibrary* agent;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3769
  AgentLibrary* next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3770
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3771
  for (agent = Arguments::libraries(); agent != NULL; agent = next) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3772
    next = agent->next();  // cache the next agent now as this agent may get moved off this list
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3773
    OnLoadEntry_t on_load_entry = lookup_jvm_on_load(agent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3774
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3775
    // If there is an JVM_OnLoad function it will get called later,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3776
    // otherwise see if there is an Agent_OnLoad
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3777
    if (on_load_entry == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3778
      on_load_entry = lookup_agent_on_load(agent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3779
      if (on_load_entry != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3780
        // switch it to the agent list -- so that Agent_OnLoad will be called,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3781
        // JVM_OnLoad won't be attempted and Agent_OnUnload will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3782
        Arguments::convert_library_to_agent(agent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3783
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3784
        vm_exit_during_initialization("Could not find JVM_OnLoad or Agent_OnLoad function in the library", agent->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3785
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3786
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3787
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3788
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3789
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3790
// Create agents for -agentlib:  -agentpath:  and converted -Xrun
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3791
// Invokes Agent_OnLoad
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3792
// Called very early -- before JavaThreads exist
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3793
void Threads::create_vm_init_agents() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3794
  extern struct JavaVM_ main_vm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3795
  AgentLibrary* agent;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3796
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3797
  JvmtiExport::enter_onload_phase();
13975
2f7431485cfa 7189254: Change makefiles for more flexibility to override defaults
jprovino
parents: 13860
diff changeset
  3798
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3799
  for (agent = Arguments::agents(); agent != NULL; agent = agent->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3800
    OnLoadEntry_t  on_load_entry = lookup_agent_on_load(agent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3801
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3802
    if (on_load_entry != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3803
      // Invoke the Agent_OnLoad function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3804
      jint err = (*on_load_entry)(&main_vm, agent->options(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3805
      if (err != JNI_OK) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3806
        vm_exit_during_initialization("agent library failed to init", agent->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3807
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3808
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3809
      vm_exit_during_initialization("Could not find Agent_OnLoad function in the agent library", agent->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3810
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3811
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3812
  JvmtiExport::enter_primordial_phase();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3813
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3814
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3815
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3816
  typedef void (JNICALL *Agent_OnUnload_t)(JavaVM *);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3817
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3818
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3819
void Threads::shutdown_vm_agents() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3820
  // Send any Agent_OnUnload notifications
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3821
  const char *on_unload_symbols[] = AGENT_ONUNLOAD_SYMBOLS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3822
  extern struct JavaVM_ main_vm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3823
  for (AgentLibrary* agent = Arguments::agents(); agent != NULL; agent = agent->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3824
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3825
    // Find the Agent_OnUnload function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3826
    for (uint symbol_index = 0; symbol_index < ARRAY_SIZE(on_unload_symbols); symbol_index++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3827
      Agent_OnUnload_t unload_entry = CAST_TO_FN_PTR(Agent_OnUnload_t,
7405
e6fc8d3926f8 6348631: remove the use of the HPI library from Hotspot
ikrylov
parents: 7397
diff changeset
  3828
               os::dll_lookup(agent->os_lib(), on_unload_symbols[symbol_index]));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3829
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3830
      // Invoke the Agent_OnUnload function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3831
      if (unload_entry != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3832
        JavaThread* thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3833
        ThreadToNativeFromVM ttn(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3834
        HandleMark hm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3835
        (*unload_entry)(&main_vm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3836
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3837
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3838
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3839
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3840
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3841
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3842
// Called for after the VM is initialized for -Xrun libraries which have not been converted to agent libraries
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3843
// Invokes JVM_OnLoad
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3844
void Threads::create_vm_init_libraries() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3845
  extern struct JavaVM_ main_vm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3846
  AgentLibrary* agent;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3847
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3848
  for (agent = Arguments::libraries(); agent != NULL; agent = agent->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3849
    OnLoadEntry_t on_load_entry = lookup_jvm_on_load(agent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3850
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3851
    if (on_load_entry != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3852
      // Invoke the JVM_OnLoad function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3853
      JavaThread* thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3854
      ThreadToNativeFromVM ttn(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3855
      HandleMark hm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3856
      jint err = (*on_load_entry)(&main_vm, agent->options(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3857
      if (err != JNI_OK) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3858
        vm_exit_during_initialization("-Xrun library failed to init", agent->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3859
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3860
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3861
      vm_exit_during_initialization("Could not find JVM_OnLoad function in -Xrun library", agent->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3862
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3863
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3864
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3865
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3866
// Last thread running calls java.lang.Shutdown.shutdown()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3867
void JavaThread::invoke_shutdown_hooks() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3868
  HandleMark hm(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3869
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3870
  // We could get here with a pending exception, if so clear it now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3871
  if (this->has_pending_exception()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3872
    this->clear_pending_exception();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3873
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3874
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3875
  EXCEPTION_MARK;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3876
  Klass* k =
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  3877
    SystemDictionary::resolve_or_null(vmSymbols::java_lang_Shutdown(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3878
                                      THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3879
  if (k != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3880
    // SystemDictionary::resolve_or_null will return null if there was
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3881
    // an exception.  If we cannot load the Shutdown class, just don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3882
    // call Shutdown.shutdown() at all.  This will mean the shutdown hooks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3883
    // and finalizers (if runFinalizersOnExit is set) won't be run.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3884
    // Note that if a shutdown hook was registered or runFinalizersOnExit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3885
    // was called, the Shutdown class would have already been loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3886
    // (Runtime.addShutdownHook and runFinalizersOnExit will load it).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3887
    instanceKlassHandle shutdown_klass (THREAD, k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3888
    JavaValue result(T_VOID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3889
    JavaCalls::call_static(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3890
                           shutdown_klass,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  3891
                           vmSymbols::shutdown_method_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 8061
diff changeset
  3892
                           vmSymbols::void_method_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3893
                           THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3894
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3895
  CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3896
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3897
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3898
// Threads::destroy_vm() is normally called from jni_DestroyJavaVM() when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3899
// the program falls off the end of main(). Another VM exit path is through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3900
// vm_exit() when the program calls System.exit() to return a value or when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3901
// there is a serious error in VM. The two shutdown paths are not exactly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3902
// the same, but they share Shutdown.shutdown() at Java level and before_exit()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3903
// and VM_Exit op at VM level.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3904
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3905
// Shutdown sequence:
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  3906
//   + Shutdown native memory tracking if it is on
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3907
//   + Wait until we are the last non-daemon thread to execute
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3908
//     <-- every thing is still working at this moment -->
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3909
//   + Call java.lang.Shutdown.shutdown(), which will invoke Java level
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3910
//        shutdown hooks, run finalizers if finalization-on-exit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3911
//   + Call before_exit(), prepare for VM exit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3912
//      > run VM level shutdown hooks (they are registered through JVM_OnExit(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3913
//        currently the only user of this mechanism is File.deleteOnExit())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3914
//      > stop flat profiler, StatSampler, watcher thread, CMS threads,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3915
//        post thread end and vm death events to JVMTI,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3916
//        stop signal thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3917
//   + Call JavaThread::exit(), it will:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3918
//      > release JNI handle blocks, remove stack guard pages
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3919
//      > remove this thread from Threads list
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3920
//     <-- no more Java code from this thread after this point -->
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3921
//   + Stop VM thread, it will bring the remaining VM to a safepoint and stop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3922
//     the compiler threads at safepoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3923
//     <-- do not use anything that could get blocked by Safepoint -->
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3924
//   + Disable tracing at JNI/JVM barriers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3925
//   + Set _vm_exited flag for threads that are still running native code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3926
//   + Delete this thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3927
//   + Call exit_globals()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3928
//      > deletes tty
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3929
//      > deletes PerfMemory resources
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3930
//   + Return to caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3931
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3932
bool Threads::destroy_vm() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3933
  JavaThread* thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3934
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3935
#ifdef ASSERT
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3936
  _vm_complete = false;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3937
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3938
  // Wait until we are the last non-daemon thread to execute
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3939
  { MutexLocker nu(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3940
    while (Threads::number_of_non_daemon_threads() > 1 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3941
      // This wait should make safepoint checks, wait without a timeout,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3942
      // and wait as a suspend-equivalent condition.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3943
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3944
      // Note: If the FlatProfiler is running and this thread is waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3945
      // for another non-daemon thread to finish, then the FlatProfiler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3946
      // is waiting for the external suspend request on this thread to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3947
      // complete. wait_for_ext_suspend_completion() will eventually
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3948
      // timeout, but that takes time. Making this wait a suspend-
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3949
      // equivalent condition solves that timeout problem.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3950
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3951
      Threads_lock->wait(!Mutex::_no_safepoint_check_flag, 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3952
                         Mutex::_as_suspend_equivalent_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3953
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3954
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3955
  // Hang forever on exit if we are reporting an error.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3956
  if (ShowMessageBoxOnError && is_error_reported()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3957
    os::infinite_sleep();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3958
  }
8476
7e34c2d4cf9b 7022037: Pause when exiting if debugger is attached on windows
sla
parents: 8118
diff changeset
  3959
  os::wait_for_keypress_at_exit();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3960
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3961
  if (JDK_Version::is_jdk12x_version()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3962
    // We are the last thread running, so check if finalizers should be run.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3963
    // For 1.3 or later this is done in thread->invoke_shutdown_hooks()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3964
    HandleMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3965
    Universe::run_finalizers_on_exit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3966
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3967
    // run Java level shutdown hooks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3968
    thread->invoke_shutdown_hooks();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3969
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3970
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3971
  before_exit(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3972
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3973
  thread->exit(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3974
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3975
  // Stop VM thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3976
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3977
    // 4945125 The vm thread comes to a safepoint during exit.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3978
    // GC vm_operations can get caught at the safepoint, and the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3979
    // heap is unparseable if they are caught. Grab the Heap_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3980
    // to prevent this. The GC vm_operations will not be able to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3981
    // queue until after the vm thread is dead.
9992
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3982
    // After this point, we'll never emerge out of the safepoint before
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3983
    // the VM exits, so concurrent GC threads do not need to be explicitly
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3984
    // stopped; they remain inactive until the process exits.
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3985
    // Note: some concurrent G1 threads may be running during a safepoint,
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3986
    // but these will not be accessing the heap, just some G1-specific side
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3987
    // data structures that are not accessed by any other threads but them
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3988
    // after this point in a terminal safepoint.
0d82cce3e655 7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
ysr
parents: 9946
diff changeset
  3989
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3990
    MutexLocker ml(Heap_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3991
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3992
    VMThread::wait_for_vm_thread_exit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3993
    assert(SafepointSynchronize::is_at_safepoint(), "VM thread should exit at Safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3994
    VMThread::destroy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3995
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3996
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3997
  // clean up ideal graph printers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3998
#if defined(COMPILER2) && !defined(PRODUCT)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3999
  IdealGraphPrinter::clean_up();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4000
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4001
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4002
  // Now, all Java threads are gone except daemon threads. Daemon threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4003
  // running Java code or in VM are stopped by the Safepoint. However,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4004
  // daemon threads executing native code are still running.  But they
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4005
  // will be stopped at native=>Java/VM barriers. Note that we can't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4006
  // simply kill or suspend them, as it is inherently deadlock-prone.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4007
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4008
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4009
  // disable function tracing at JNI/JVM barriers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4010
  TraceJNICalls = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4011
  TraceJVMCalls = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4012
  TraceRuntimeCalls = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4013
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4015
  VM_Exit::set_vm_exited();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4016
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4017
  notify_vm_shutdown();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4018
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4019
  delete thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4020
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4021
  // exit_globals() will delete tty
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4022
  exit_globals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4024
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4025
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4028
jboolean Threads::is_supported_jni_version_including_1_1(jint version) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4029
  if (version == JNI_VERSION_1_1) return JNI_TRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4030
  return is_supported_jni_version(version);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4031
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4032
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4033
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4034
jboolean Threads::is_supported_jni_version(jint version) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4035
  if (version == JNI_VERSION_1_2) return JNI_TRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4036
  if (version == JNI_VERSION_1_4) return JNI_TRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4037
  if (version == JNI_VERSION_1_6) return JNI_TRUE;
16394
b5940f63d436 8005716: Enhance JNI specification to allow support of static JNI libraries in Embedded JREs
bpittore
parents: 15853
diff changeset
  4038
  if (version == JNI_VERSION_1_8) return JNI_TRUE;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4039
  return JNI_FALSE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4040
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4041
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4043
void Threads::add(JavaThread* p, bool force_daemon) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4044
  // The threads lock must be owned at this point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4045
  assert_locked_or_safepoint(Threads_lock);
6768
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  4046
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  4047
  // See the comment for this method in thread.hpp for its purpose and
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  4048
  // why it is called here.
71338ecb7813 6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue
tonyp
parents: 6764
diff changeset
  4049
  p->initialize_queues();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4050
  p->set_next(_thread_list);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4051
  _thread_list = p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4052
  _number_of_threads++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4053
  oop threadObj = p->threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4054
  bool daemon = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4055
  // Bootstrapping problem: threadObj can be null for initial
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4056
  // JavaThread (or for threads attached via JNI)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4057
  if ((!force_daemon) && (threadObj == NULL || !java_lang_Thread::is_daemon(threadObj))) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4058
    _number_of_non_daemon_threads++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4059
    daemon = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4060
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4061
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  4062
  p->set_safepoint_visible(true);
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  4063
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4064
  ThreadService::add_thread(p, daemon);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4066
  // Possible GC point.
11636
3c07b54482a5 7141200: log some interesting information in ring buffers for crashes
never
parents: 11480
diff changeset
  4067
  Events::log(p, "Thread added: " INTPTR_FORMAT, p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4068
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4069
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4070
void Threads::remove(JavaThread* p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4071
  // Extra scope needed for Thread_lock, so we can check
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4072
  // that we do not remove thread without safepoint code notice
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4073
  { MutexLocker ml(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4075
    assert(includes(p), "p must be present");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4076
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4077
    JavaThread* current = _thread_list;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4078
    JavaThread* prev    = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4079
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4080
    while (current != p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4081
      prev    = current;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4082
      current = current->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4083
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4084
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4085
    if (prev) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4086
      prev->set_next(current->next());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4087
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4088
      _thread_list = p->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4089
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4090
    _number_of_threads--;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4091
    oop threadObj = p->threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4092
    bool daemon = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4093
    if (threadObj == NULL || !java_lang_Thread::is_daemon(threadObj)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4094
      _number_of_non_daemon_threads--;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4095
      daemon = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4096
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4097
      // Only one thread left, do a notify on the Threads_lock so a thread waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4098
      // on destroy_vm will wake up.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4099
      if (number_of_non_daemon_threads() == 1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4100
        Threads_lock->notify_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4101
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4102
    ThreadService::remove_thread(p, daemon);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4103
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4104
    // Make sure that safepoint code disregard this thread. This is needed since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4105
    // the thread might mess around with locks after this point. This can cause it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4106
    // to do callbacks into the safepoint code. However, the safepoint code is not aware
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4107
    // of this thread since it is removed from the queue.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4108
    p->set_terminated_value();
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  4109
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  4110
    // Now, this thread is not visible to safepoint
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12373
diff changeset
  4111
    p->set_safepoint_visible(false);
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  4112
    // once the thread becomes safepoint invisible, we can not use its per-thread
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  4113
    // recorder. And Threads::do_threads() no longer walks this thread, so we have
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  4114
    // to release its per-thread recorder here.
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 14083
diff changeset
  4115
    MemTracker::thread_exiting(p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4116
  } // unlock Threads_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4117
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4118
  // Since Events::log uses a lock, we grab it outside the Threads_lock
11636
3c07b54482a5 7141200: log some interesting information in ring buffers for crashes
never
parents: 11480
diff changeset
  4119
  Events::log(p, "Thread exited: " INTPTR_FORMAT, p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4120
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4121
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4122
// Threads_lock must be held when this is called (or must be called during a safepoint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4123
bool Threads::includes(JavaThread* p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4124
  assert(Threads_lock->is_locked(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4125
  ALL_JAVA_THREADS(q) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4126
    if (q == p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4127
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4128
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4129
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4130
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4131
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4132
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4133
// Operations on the Threads list for GC.  These are not explicitly locked,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4134
// but the garbage collector must provide a safe context for them to run.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4135
// In particular, these things should never be called when the Threads_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4136
// is held by some other thread. (Note: the Safepoint abstraction also
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4137
// uses the Threads_lock to gurantee this property. It also makes sure that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4138
// all threads gets blocked when exiting or starting).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4139
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  4140
void Threads::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4141
  ALL_JAVA_THREADS(p) {
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  4142
    p->oops_do(f, cld_f, cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4143
  }
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  4144
  VMThread::vm_thread()->oops_do(f, cld_f, cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4145
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4146
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  4147
void Threads::possibly_parallel_oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4148
  // Introduce a mechanism allowing parallel threads to claim threads as
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4149
  // root groups.  Overhead should be small enough to use all the time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4150
  // even in sequential code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4151
  SharedHeap* sh = SharedHeap::heap();
11174
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4152
  // Cannot yet substitute active_workers for n_par_threads
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4153
  // because of G1CollectedHeap::verify() use of
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4154
  // SharedHeap::process_strong_roots().  n_par_threads == 0 will
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4155
  // turn off parallelism in process_strong_roots while active_workers
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4156
  // is being used for parallelism elsewhere.
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4157
  bool is_par = sh->n_par_threads() > 0;
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4158
  assert(!is_par ||
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4159
         (SharedHeap::heap()->n_par_threads() ==
fccee5238e70 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents: 10966
diff changeset
  4160
          SharedHeap::heap()->workers()->active_workers()), "Mismatch");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4161
  int cp = SharedHeap::heap()->strong_roots_parity();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4162
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4163
    if (p->claim_oops_do(is_par, cp)) {
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  4164
      p->oops_do(f, cld_f, cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4165
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4166
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4167
  VMThread* vmt = VMThread::vm_thread();
10670
4ea0e7d2ffbc 6484982: G1: process references during evacuation pauses
johnc
parents: 10546
diff changeset
  4168
  if (vmt->claim_oops_do(is_par, cp)) {
14582
490bb6c0df7c 8003720: NPG: Method in interpreter stack frame can be deallocated
stefank
parents: 14580
diff changeset
  4169
    vmt->oops_do(f, cld_f, cf);
10670
4ea0e7d2ffbc 6484982: G1: process references during evacuation pauses
johnc
parents: 10546
diff changeset
  4170
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4171
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4172
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  4173
#if INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4174
// Used by ParallelScavenge
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4175
void Threads::create_thread_roots_tasks(GCTaskQueue* q) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4176
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4177
    q->enqueue(new ThreadRootsTask(p));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4178
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4179
  q->enqueue(new ThreadRootsTask(VMThread::vm_thread()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4180
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4181
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4182
// Used by Parallel Old
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4183
void Threads::create_thread_roots_marking_tasks(GCTaskQueue* q) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4184
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4185
    q->enqueue(new ThreadRootsMarkingTask(p));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4186
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4187
  q->enqueue(new ThreadRootsMarkingTask(VMThread::vm_thread()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4188
}
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  4189
#endif // INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4190
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
  4191
void Threads::nmethods_do(CodeBlobClosure* cf) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4192
  ALL_JAVA_THREADS(p) {
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
  4193
    p->nmethods_do(cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4194
  }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3261
diff changeset
  4195
  VMThread::vm_thread()->nmethods_do(cf);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4196
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4197
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4198
void Threads::metadata_do(void f(Metadata*)) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4199
  ALL_JAVA_THREADS(p) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4200
    p->metadata_do(f);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4201
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4202
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4203
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4204
void Threads::gc_epilogue() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4205
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4206
    p->gc_epilogue();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4207
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4208
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4209
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4210
void Threads::gc_prologue() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4211
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4212
    p->gc_prologue();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4213
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4214
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4215
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4216
void Threads::deoptimized_wrt_marked_nmethods() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4217
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4218
    p->deoptimized_wrt_marked_nmethods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4219
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4220
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4221
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4222
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4223
// Get count Java threads that are waiting to enter the specified monitor.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4224
GrowableArray<JavaThread*>* Threads::get_pending_threads(int count,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4225
  address monitor, bool doLock) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4226
  assert(doLock || SafepointSynchronize::is_at_safepoint(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4227
    "must grab Threads_lock or be at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4228
  GrowableArray<JavaThread*>* result = new GrowableArray<JavaThread*>(count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4229
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4230
  int i = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4231
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4232
    MutexLockerEx ml(doLock ? Threads_lock : NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4233
    ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4234
      if (p->is_Compiler_thread()) continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4235
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4236
      address pending = (address)p->current_pending_monitor();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4237
      if (pending == monitor) {             // found a match
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4238
        if (i < count) result->append(p);   // save the first count matches
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4239
        i++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4240
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4241
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4242
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4243
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4244
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4245
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4246
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4247
JavaThread *Threads::owning_thread_from_monitor_owner(address owner, bool doLock) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4248
  assert(doLock ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4249
         Threads_lock->owned_by_self() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4250
         SafepointSynchronize::is_at_safepoint(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4251
         "must grab Threads_lock or be at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4252
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4253
  // NULL owner means not locked so we can skip the search
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4254
  if (owner == NULL) return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4255
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4256
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4257
    MutexLockerEx ml(doLock ? Threads_lock : NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4258
    ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4259
      // first, see if owner is the address of a Java thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4260
      if (owner == (address)p) return p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4261
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4262
  }
15853
1c4e16950e96 8007476: assert(the_owner != NULL) failed: Did not find owning Java thread for lock word address
dcubed
parents: 15611
diff changeset
  4263
  // Cannot assert on lack of success here since this function may be
1c4e16950e96 8007476: assert(the_owner != NULL) failed: Did not find owning Java thread for lock word address
dcubed
parents: 15611
diff changeset
  4264
  // used by code that is trying to report useful problem information
1c4e16950e96 8007476: assert(the_owner != NULL) failed: Did not find owning Java thread for lock word address
dcubed
parents: 15611
diff changeset
  4265
  // like deadlock detection.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4266
  if (UseHeavyMonitors) return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4267
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4268
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4269
  // If we didn't find a matching Java thread and we didn't force use of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4270
  // heavyweight monitors, then the owner is the stack address of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4271
  // Lock Word in the owning Java thread's stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4272
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4273
  JavaThread* the_owner = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4274
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4275
    MutexLockerEx ml(doLock ? Threads_lock : NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4276
    ALL_JAVA_THREADS(q) {
2526
39a58a50be35 6699669: Hotspot server leaves synchronized block with monitor in bad state
xlu
parents: 2336
diff changeset
  4277
      if (q->is_lock_owned(owner)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4278
        the_owner = q;
2526
39a58a50be35 6699669: Hotspot server leaves synchronized block with monitor in bad state
xlu
parents: 2336
diff changeset
  4279
        break;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4280
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4281
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4282
  }
15853
1c4e16950e96 8007476: assert(the_owner != NULL) failed: Did not find owning Java thread for lock word address
dcubed
parents: 15611
diff changeset
  4283
  // cannot assert on lack of success here; see above comment
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4284
  return the_owner;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4285
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4286
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4287
// Threads::print_on() is called at safepoint by VM_PrintThreads operation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4288
void Threads::print_on(outputStream* st, bool print_stacks, bool internal_format, bool print_concurrent_locks) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4289
  char buf[32];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4290
  st->print_cr(os::local_time_string(buf, sizeof(buf)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4291
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4292
  st->print_cr("Full thread dump %s (%s %s):",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4293
                Abstract_VM_Version::vm_name(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4294
                Abstract_VM_Version::vm_release(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4295
                Abstract_VM_Version::vm_info_string()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4296
               );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4297
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4298
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  4299
#if INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4300
  // Dump concurrent locks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4301
  ConcurrentLocksDump concurrent_locks;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4302
  if (print_concurrent_locks) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4303
    concurrent_locks.dump_at_safepoint();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4304
  }
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  4305
#endif // INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4306
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4307
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4308
    ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4309
    p->print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4310
    if (print_stacks) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4311
      if (internal_format) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4312
        p->trace_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4313
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4314
        p->print_stack_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4315
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4316
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4317
    st->cr();
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  4318
#if INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4319
    if (print_concurrent_locks) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4320
      concurrent_locks.print_locks_on(p, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4321
    }
15482
470d0b0c09f1 8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents: 15221
diff changeset
  4322
#endif // INCLUDE_ALL_GCS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4323
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4324
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4325
  VMThread::vm_thread()->print_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4326
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4327
  Universe::heap()->print_gc_threads_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4328
  WatcherThread* wt = WatcherThread::watcher_thread();
13857
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  4329
  if (wt != NULL) {
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  4330
    wt->print_on(st);
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  4331
    st->cr();
93015306affa 7194254: jstack reports wrong thread priorities
dholmes
parents: 13748
diff changeset
  4332
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4333
  CompileBroker::print_compiler_threads_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4334
  st->flush();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4335
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4336
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4337
// Threads::print_on_error() is called by fatal error handler. It's possible
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4338
// that VM is not at safepoint and/or current thread is inside signal handler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4339
// Don't print stack trace, as the stack may not be walkable. Don't allocate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4340
// memory (even in resource area), it might deadlock the error handler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4341
void Threads::print_on_error(outputStream* st, Thread* current, char* buf, int buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4342
  bool found_current = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4343
  st->print_cr("Java Threads: ( => current thread )");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4344
  ALL_JAVA_THREADS(thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4345
    bool is_current = (current == thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4346
    found_current = found_current || is_current;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4347
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4348
    st->print("%s", is_current ? "=>" : "  ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4349
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4350
    st->print(PTR_FORMAT, thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4351
    st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4352
    thread->print_on_error(st, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4353
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4354
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4355
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4356
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4357
  st->print_cr("Other Threads:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4358
  if (VMThread::vm_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4359
    bool is_current = (current == VMThread::vm_thread());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4360
    found_current = found_current || is_current;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4361
    st->print("%s", current == VMThread::vm_thread() ? "=>" : "  ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4362
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4363
    st->print(PTR_FORMAT, VMThread::vm_thread());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4364
    st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4365
    VMThread::vm_thread()->print_on_error(st, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4366
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4367
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4368
  WatcherThread* wt = WatcherThread::watcher_thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4369
  if (wt != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4370
    bool is_current = (current == wt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4371
    found_current = found_current || is_current;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4372
    st->print("%s", is_current ? "=>" : "  ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4373
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4374
    st->print(PTR_FORMAT, wt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4375
    st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4376
    wt->print_on_error(st, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4377
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4378
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4379
  if (!found_current) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4380
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4381
    st->print("=>" PTR_FORMAT " (exited) ", current);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4382
    current->print_on_error(st, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4383
    st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4384
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4385
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4386
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4387
// Internal SpinLock and Mutex
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4388
// Based on ParkEvent
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4389
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4390
// Ad-hoc mutual exclusion primitives: SpinLock and Mux
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4391
//
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4392
// We employ SpinLocks _only for low-contention, fixed-length
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4393
// short-duration critical sections where we're concerned
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4394
// about native mutex_t or HotSpot Mutex:: latency.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4395
// The mux construct provides a spin-then-block mutual exclusion
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4396
// mechanism.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4397
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4398
// Testing has shown that contention on the ListLock guarding gFreeList
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4399
// is common.  If we implement ListLock as a simple SpinLock it's common
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4400
// for the JVM to devolve to yielding with little progress.  This is true
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4401
// despite the fact that the critical sections protected by ListLock are
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4402
// extremely short.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4403
//
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4404
// TODO-FIXME: ListLock should be of type SpinLock.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4405
// We should make this a 1st-class type, integrated into the lock
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4406
// hierarchy as leaf-locks.  Critically, the SpinLock structure
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4407
// should have sufficient padding to avoid false-sharing and excessive
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4408
// cache-coherency traffic.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4409
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4410
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4411
typedef volatile int SpinLockT ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4412
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4413
void Thread::SpinAcquire (volatile int * adr, const char * LockName) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4414
  if (Atomic::cmpxchg (1, adr, 0) == 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4415
     return ;   // normal fast-path return
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4416
  }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4417
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4418
  // Slow-path : We've encountered contention -- Spin/Yield/Block strategy.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4419
  TEVENT (SpinAcquire - ctx) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4420
  int ctr = 0 ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4421
  int Yields = 0 ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4422
  for (;;) {
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4423
     while (*adr != 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4424
        ++ctr ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4425
        if ((ctr & 0xFFF) == 0 || !os::is_MP()) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4426
           if (Yields > 5) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4427
             // Consider using a simple NakedSleep() instead.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4428
             // Then SpinAcquire could be called by non-JVM threads
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4429
             Thread::current()->_ParkEvent->park(1) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4430
           } else {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4431
             os::NakedYield() ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4432
             ++Yields ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4433
           }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4434
        } else {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4435
           SpinPause() ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4436
        }
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4437
     }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4438
     if (Atomic::cmpxchg (1, adr, 0) == 0) return ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4439
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4440
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4441
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4442
void Thread::SpinRelease (volatile int * adr) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4443
  assert (*adr != 0, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4444
  OrderAccess::fence() ;      // guarantee at least release consistency.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4445
  // Roach-motel semantics.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4446
  // It's safe if subsequent LDs and STs float "up" into the critical section,
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4447
  // but prior LDs and STs within the critical section can't be allowed
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4448
  // to reorder or float past the ST that releases the lock.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4449
  *adr = 0 ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4450
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4451
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4452
// muxAcquire and muxRelease:
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4453
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4454
// *  muxAcquire and muxRelease support a single-word lock-word construct.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4455
//    The LSB of the word is set IFF the lock is held.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4456
//    The remainder of the word points to the head of a singly-linked list
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4457
//    of threads blocked on the lock.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4458
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4459
// *  The current implementation of muxAcquire-muxRelease uses its own
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4460
//    dedicated Thread._MuxEvent instance.  If we're interested in
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4461
//    minimizing the peak number of extant ParkEvent instances then
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4462
//    we could eliminate _MuxEvent and "borrow" _ParkEvent as long
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4463
//    as certain invariants were satisfied.  Specifically, care would need
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4464
//    to be taken with regards to consuming unpark() "permits".
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4465
//    A safe rule of thumb is that a thread would never call muxAcquire()
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4466
//    if it's enqueued (cxq, EntryList, WaitList, etc) and will subsequently
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4467
//    park().  Otherwise the _ParkEvent park() operation in muxAcquire() could
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4468
//    consume an unpark() permit intended for monitorenter, for instance.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4469
//    One way around this would be to widen the restricted-range semaphore
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4470
//    implemented in park().  Another alternative would be to provide
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4471
//    multiple instances of the PlatformEvent() for each thread.  One
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4472
//    instance would be dedicated to muxAcquire-muxRelease, for instance.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4473
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4474
// *  Usage:
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4475
//    -- Only as leaf locks
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4476
//    -- for short-term locking only as muxAcquire does not perform
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4477
//       thread state transitions.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4478
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4479
// Alternatives:
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4480
// *  We could implement muxAcquire and muxRelease with MCS or CLH locks
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4481
//    but with parking or spin-then-park instead of pure spinning.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4482
// *  Use Taura-Oyama-Yonenzawa locks.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4483
// *  It's possible to construct a 1-0 lock if we encode the lockword as
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4484
//    (List,LockByte).  Acquire will CAS the full lockword while Release
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4485
//    will STB 0 into the LockByte.  The 1-0 scheme admits stranding, so
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4486
//    acquiring threads use timers (ParkTimed) to detect and recover from
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4487
//    the stranding window.  Thread/Node structures must be aligned on 256-byte
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4488
//    boundaries by using placement-new.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4489
// *  Augment MCS with advisory back-link fields maintained with CAS().
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4490
//    Pictorially:  LockWord -> T1 <-> T2 <-> T3 <-> ... <-> Tn <-> Owner.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4491
//    The validity of the backlinks must be ratified before we trust the value.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4492
//    If the backlinks are invalid the exiting thread must back-track through the
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4493
//    the forward links, which are always trustworthy.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4494
// *  Add a successor indication.  The LockWord is currently encoded as
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4495
//    (List, LOCKBIT:1).  We could also add a SUCCBIT or an explicit _succ variable
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4496
//    to provide the usual futile-wakeup optimization.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4497
//    See RTStt for details.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4498
// *  Consider schedctl.sc_nopreempt to cover the critical section.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4499
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4500
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4501
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4502
typedef volatile intptr_t MutexT ;      // Mux Lock-word
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4503
enum MuxBits { LOCKBIT = 1 } ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4504
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4505
void Thread::muxAcquire (volatile intptr_t * Lock, const char * LockName) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4506
  intptr_t w = Atomic::cmpxchg_ptr (LOCKBIT, Lock, 0) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4507
  if (w == 0) return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4508
  if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4509
     return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4510
  }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4511
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4512
  TEVENT (muxAcquire - Contention) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4513
  ParkEvent * const Self = Thread::current()->_MuxEvent ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4514
  assert ((intptr_t(Self) & LOCKBIT) == 0, "invariant") ;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4515
  for (;;) {
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4516
     int its = (os::is_MP() ? 100 : 0) + 1 ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4517
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4518
     // Optional spin phase: spin-then-park strategy
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4519
     while (--its >= 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4520
       w = *Lock ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4521
       if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4522
          return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4523
       }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4524
     }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4525
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4526
     Self->reset() ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4527
     Self->OnList = intptr_t(Lock) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4528
     // The following fence() isn't _strictly necessary as the subsequent
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4529
     // CAS() both serializes execution and ratifies the fetched *Lock value.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4530
     OrderAccess::fence();
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4531
     for (;;) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4532
        w = *Lock ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4533
        if ((w & LOCKBIT) == 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4534
            if (Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4535
                Self->OnList = 0 ;   // hygiene - allows stronger asserts
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4536
                return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4537
            }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4538
            continue ;      // Interference -- *Lock changed -- Just retry
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4539
        }
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4540
        assert (w & LOCKBIT, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4541
        Self->ListNext = (ParkEvent *) (w & ~LOCKBIT );
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4542
        if (Atomic::cmpxchg_ptr (intptr_t(Self)|LOCKBIT, Lock, w) == w) break ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4543
     }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4544
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4545
     while (Self->OnList != 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4546
        Self->park() ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4547
     }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4548
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4549
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4550
6975
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4551
void Thread::muxAcquireW (volatile intptr_t * Lock, ParkEvent * ev) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4552
  intptr_t w = Atomic::cmpxchg_ptr (LOCKBIT, Lock, 0) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4553
  if (w == 0) return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4554
  if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4555
    return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4556
  }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4557
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4558
  TEVENT (muxAcquire - Contention) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4559
  ParkEvent * ReleaseAfter = NULL ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4560
  if (ev == NULL) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4561
    ev = ReleaseAfter = ParkEvent::Allocate (NULL) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4562
  }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4563
  assert ((intptr_t(ev) & LOCKBIT) == 0, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4564
  for (;;) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4565
    guarantee (ev->OnList == 0, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4566
    int its = (os::is_MP() ? 100 : 0) + 1 ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4567
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4568
    // Optional spin phase: spin-then-park strategy
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4569
    while (--its >= 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4570
      w = *Lock ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4571
      if ((w & LOCKBIT) == 0 && Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4572
        if (ReleaseAfter != NULL) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4573
          ParkEvent::Release (ReleaseAfter) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4574
        }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4575
        return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4576
      }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4577
    }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4578
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4579
    ev->reset() ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4580
    ev->OnList = intptr_t(Lock) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4581
    // The following fence() isn't _strictly necessary as the subsequent
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4582
    // CAS() both serializes execution and ratifies the fetched *Lock value.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4583
    OrderAccess::fence();
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4584
    for (;;) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4585
      w = *Lock ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4586
      if ((w & LOCKBIT) == 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4587
        if (Atomic::cmpxchg_ptr (w|LOCKBIT, Lock, w) == w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4588
          ev->OnList = 0 ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4589
          // We call ::Release while holding the outer lock, thus
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4590
          // artificially lengthening the critical section.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4591
          // Consider deferring the ::Release() until the subsequent unlock(),
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4592
          // after we've dropped the outer lock.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4593
          if (ReleaseAfter != NULL) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4594
            ParkEvent::Release (ReleaseAfter) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4595
          }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4596
          return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4597
        }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4598
        continue ;      // Interference -- *Lock changed -- Just retry
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4599
      }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4600
      assert (w & LOCKBIT, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4601
      ev->ListNext = (ParkEvent *) (w & ~LOCKBIT );
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4602
      if (Atomic::cmpxchg_ptr (intptr_t(ev)|LOCKBIT, Lock, w) == w) break ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4603
    }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4604
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4605
    while (ev->OnList != 0) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4606
      ev->park() ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4607
    }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4608
  }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4609
}
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4610
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4611
// Release() must extract a successor from the list and then wake that thread.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4612
// It can "pop" the front of the list or use a detach-modify-reattach (DMR) scheme
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4613
// similar to that used by ParkEvent::Allocate() and ::Release().  DMR-based
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4614
// Release() would :
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4615
// (A) CAS() or swap() null to *Lock, releasing the lock and detaching the list.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4616
// (B) Extract a successor from the private list "in-hand"
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4617
// (C) attempt to CAS() the residual back into *Lock over null.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4618
//     If there were any newly arrived threads and the CAS() would fail.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4619
//     In that case Release() would detach the RATs, re-merge the list in-hand
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4620
//     with the RATs and repeat as needed.  Alternately, Release() might
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4621
//     detach and extract a successor, but then pass the residual list to the wakee.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4622
//     The wakee would be responsible for reattaching and remerging before it
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4623
//     competed for the lock.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4624
//
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4625
// Both "pop" and DMR are immune from ABA corruption -- there can be
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4626
// multiple concurrent pushers, but only one popper or detacher.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4627
// This implementation pops from the head of the list.  This is unfair,
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4628
// but tends to provide excellent throughput as hot threads remain hot.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4629
// (We wake recently run threads first).
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4630
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4631
void Thread::muxRelease (volatile intptr_t * Lock)  {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4632
  for (;;) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4633
    const intptr_t w = Atomic::cmpxchg_ptr (0, Lock, LOCKBIT) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4634
    assert (w & LOCKBIT, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4635
    if (w == LOCKBIT) return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4636
    ParkEvent * List = (ParkEvent *) (w & ~LOCKBIT) ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4637
    assert (List != NULL, "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4638
    assert (List->OnList == intptr_t(Lock), "invariant") ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4639
    ParkEvent * nxt = List->ListNext ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4640
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4641
    // The following CAS() releases the lock and pops the head element.
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4642
    if (Atomic::cmpxchg_ptr (intptr_t(nxt), Lock, w) != w) {
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4643
      continue ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4644
    }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4645
    List->OnList = 0 ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4646
    OrderAccess::fence() ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4647
    List->unpark () ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4648
    return ;
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4649
  }
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4650
}
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4651
dc9b63952682 6988353: refactor contended sync subsystem
acorn
parents: 6968
diff changeset
  4652
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4653
void Threads::verify() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4654
  ALL_JAVA_THREADS(p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4655
    p->verify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4656
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4657
  VMThread* thread = VMThread::vm_thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4658
  if (thread != NULL) thread->verify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4659
}