Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/init.cpp @ 3979:4dfb2df418f2
6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
| author | johnc |
|---|---|
| date | Thu, 22 Sep 2011 10:57:37 -0700 |
| parents | 8d0b933dda2d |
| children | 7ab5f6318694 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "code/icBuffer.hpp" | |
| 27 #include "gc_interface/collectedHeap.hpp" | |
| 28 #include "interpreter/bytecodes.hpp" | |
| 29 #include "memory/universe.hpp" | |
| 30 #include "prims/methodHandles.hpp" | |
| 31 #include "runtime/handles.inline.hpp" | |
| 32 #include "runtime/icache.hpp" | |
| 33 #include "runtime/init.hpp" | |
| 34 #include "runtime/safepoint.hpp" | |
| 35 #include "runtime/sharedRuntime.hpp" | |
| 0 | 36 |
| 37 // Initialization done by VM thread in vm_init_globals() | |
| 38 void check_ThreadShadow(); | |
| 39 void eventlog_init(); | |
| 40 void mutex_init(); | |
| 41 void chunkpool_init(); | |
| 42 void perfMemory_init(); | |
| 43 | |
| 44 // Initialization done by Java thread in init_globals() | |
| 45 void management_init(); | |
| 46 void bytecodes_init(); | |
| 47 void classLoader_init(); | |
| 48 void codeCache_init(); | |
| 49 void VM_Version_init(); | |
| 50 void stubRoutines_init1(); | |
| 51 jint universe_init(); // dependent on codeCache_init and stubRoutines_init | |
| 52 void interpreter_init(); // before any methods loaded | |
| 53 void invocationCounter_init(); // before any methods loaded | |
| 54 void marksweep_init(); | |
| 55 void accessFlags_init(); | |
| 56 void templateTable_init(); | |
| 57 void InterfaceSupport_init(); | |
| 58 void universe2_init(); // dependent on codeCache_init and stubRoutines_init | |
| 59 void referenceProcessor_init(); | |
| 60 void jni_handles_init(); | |
| 61 void vmStructs_init(); | |
| 62 | |
| 63 void vtableStubs_init(); | |
| 64 void InlineCacheBuffer_init(); | |
| 65 void compilerOracle_init(); | |
| 66 void compilationPolicy_init(); | |
| 67 | |
| 68 | |
| 69 // Initialization after compiler initialization | |
| 70 bool universe_post_init(); // must happen after compiler_init | |
| 71 void javaClasses_init(); // must happen after vtable initialization | |
| 72 void stubRoutines_init2(); // note: StubRoutines need 2-phase init | |
| 73 | |
| 74 // Do not disable thread-local-storage, as it is important for some | |
| 75 // JNI/JVM/JVMTI functions and signal handlers to work properly | |
| 76 // during VM shutdown | |
| 77 void perfMemory_exit(); | |
| 78 void ostream_exit(); | |
| 79 | |
| 80 void vm_init_globals() { | |
| 81 check_ThreadShadow(); | |
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82 basic_types_init(); |
| 0 | 83 eventlog_init(); |
| 84 mutex_init(); | |
| 85 chunkpool_init(); | |
| 86 perfMemory_init(); | |
| 87 } | |
| 88 | |
| 89 | |
| 90 jint init_globals() { | |
| 91 HandleMark hm; | |
| 92 management_init(); | |
| 93 bytecodes_init(); | |
| 94 classLoader_init(); | |
| 95 codeCache_init(); | |
| 96 VM_Version_init(); | |
| 97 stubRoutines_init1(); | |
| 98 jint status = universe_init(); // dependent on codeCache_init and stubRoutines_init | |
| 99 if (status != JNI_OK) | |
| 100 return status; | |
| 101 | |
| 102 interpreter_init(); // before any methods loaded | |
| 103 invocationCounter_init(); // before any methods loaded | |
| 104 marksweep_init(); | |
| 105 accessFlags_init(); | |
| 106 templateTable_init(); | |
| 107 InterfaceSupport_init(); | |
| 108 SharedRuntime::generate_stubs(); | |
| 109 universe2_init(); // dependent on codeCache_init and stubRoutines_init | |
| 110 referenceProcessor_init(); | |
| 111 jni_handles_init(); | |
| 112 #ifndef VM_STRUCTS_KERNEL | |
| 113 vmStructs_init(); | |
| 114 #endif // VM_STRUCTS_KERNEL | |
| 115 | |
| 116 vtableStubs_init(); | |
| 117 InlineCacheBuffer_init(); | |
| 118 compilerOracle_init(); | |
| 119 compilationPolicy_init(); | |
| 120 VMRegImpl::set_regName(); | |
| 121 | |
| 122 if (!universe_post_init()) { | |
| 123 return JNI_ERR; | |
| 124 } | |
| 125 javaClasses_init(); // must happen after vtable initialization | |
| 126 stubRoutines_init2(); // note: StubRoutines need 2-phase init | |
| 127 | |
| 128 // Although we'd like to, we can't easily do a heap verify | |
| 129 // here because the main thread isn't yet a JavaThread, so | |
| 130 // its TLAB may not be made parseable from the usual interfaces. | |
| 131 if (VerifyBeforeGC && !UseTLAB && | |
| 132 Universe::heap()->total_collections() >= VerifyGCStartAt) { | |
| 133 Universe::heap()->prepare_for_verify(); | |
| 134 Universe::verify(); // make sure we're starting with a clean slate | |
| 135 } | |
| 136 | |
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137 // All the flags that get adjusted by VM_Version_init and os::init_2 |
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138 // have been set so dump the flags now. |
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139 if (PrintFlagsFinal) { |
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140 CommandLineFlags::printFlags(); |
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141 } |
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142 |
| 0 | 143 return JNI_OK; |
| 144 } | |
| 145 | |
| 146 | |
| 147 void exit_globals() { | |
| 148 static bool destructorsCalled = false; | |
| 149 if (!destructorsCalled) { | |
| 150 destructorsCalled = true; | |
| 151 perfMemory_exit(); | |
| 152 if (PrintSafepointStatistics) { | |
| 153 // Print the collected safepoint statistics. | |
| 154 SafepointSynchronize::print_stat_on_exit(); | |
| 155 } | |
| 156 ostream_exit(); | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 | |
| 161 static bool _init_completed = false; | |
| 162 | |
| 163 bool is_init_completed() { | |
| 164 return _init_completed; | |
| 165 } | |
| 166 | |
| 167 | |
| 168 void set_init_completed() { | |
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169 assert(Universe::is_fully_initialized(), "Should have completed initialization"); |
| 0 | 170 _init_completed = true; |
| 171 } |