Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/mutexLocker.cpp @ 17794:3514ee402842
8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes
Reviewed-by: dholmes, kvn
Contributed-by: martin.doerr@sap.com
author | goetz |
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date | Thu, 16 Jan 2014 14:25:51 +0100 |
parents | b2e698d2276c |
children | cefad50507d8 595c0f60d50d |
rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1997, 2013, 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 "runtime/mutexLocker.hpp" | |
27 #include "runtime/safepoint.hpp" | |
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28 #include "runtime/thread.inline.hpp" |
1972 | 29 #include "runtime/threadLocalStorage.hpp" |
30 #include "runtime/vmThread.hpp" | |
0 | 31 |
32 // Mutexes used in the VM (see comment in mutexLocker.hpp): | |
33 // | |
34 // Note that the following pointers are effectively final -- after having been | |
35 // set at JVM startup-time, they should never be subsequently mutated. | |
36 // Instead of using pointers to malloc()ed monitors and mutexes we should consider | |
37 // eliminating the indirection and using instances instead. | |
38 // Consider using GCC's __read_mostly. | |
39 | |
40 Mutex* Patching_lock = NULL; | |
41 Monitor* SystemDictionary_lock = NULL; | |
42 Mutex* PackageTable_lock = NULL; | |
43 Mutex* CompiledIC_lock = NULL; | |
44 Mutex* InlineCacheBuffer_lock = NULL; | |
45 Mutex* VMStatistic_lock = NULL; | |
46 Mutex* JNIGlobalHandle_lock = NULL; | |
47 Mutex* JNIHandleBlockFreeList_lock = NULL; | |
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48 Mutex* MemberNameTable_lock = NULL; |
0 | 49 Mutex* JmethodIdCreation_lock = NULL; |
50 Mutex* JfieldIdCreation_lock = NULL; | |
51 Monitor* JNICritical_lock = NULL; | |
52 Mutex* JvmtiThreadState_lock = NULL; | |
53 Monitor* JvmtiPendingEvent_lock = NULL; | |
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54 Monitor* Heap_lock = NULL; |
0 | 55 Mutex* ExpandHeap_lock = NULL; |
56 Mutex* AdapterHandlerLibrary_lock = NULL; | |
57 Mutex* SignatureHandlerLibrary_lock = NULL; | |
58 Mutex* VtableStubs_lock = NULL; | |
59 Mutex* SymbolTable_lock = NULL; | |
60 Mutex* StringTable_lock = NULL; | |
61 Mutex* CodeCache_lock = NULL; | |
62 Mutex* MethodData_lock = NULL; | |
63 Mutex* RetData_lock = NULL; | |
64 Monitor* VMOperationQueue_lock = NULL; | |
65 Monitor* VMOperationRequest_lock = NULL; | |
66 Monitor* Safepoint_lock = NULL; | |
67 Monitor* SerializePage_lock = NULL; | |
68 Monitor* Threads_lock = NULL; | |
69 Monitor* CGC_lock = NULL; | |
70 Mutex* STS_init_lock = NULL; | |
71 Monitor* SLT_lock = NULL; | |
72 Monitor* iCMS_lock = NULL; | |
73 Monitor* FullGCCount_lock = NULL; | |
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74 Monitor* CMark_lock = NULL; |
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75 Mutex* CMRegionStack_lock = NULL; |
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76 Mutex* SATB_Q_FL_lock = NULL; |
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77 Monitor* SATB_Q_CBL_mon = NULL; |
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78 Mutex* Shared_SATB_Q_lock = NULL; |
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79 Mutex* DirtyCardQ_FL_lock = NULL; |
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80 Monitor* DirtyCardQ_CBL_mon = NULL; |
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81 Mutex* Shared_DirtyCardQ_lock = NULL; |
0 | 82 Mutex* ParGCRareEvent_lock = NULL; |
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83 Mutex* EvacFailureStack_lock = NULL; |
0 | 84 Mutex* DerivedPointerTableGC_lock = NULL; |
85 Mutex* Compile_lock = NULL; | |
86 Monitor* MethodCompileQueue_lock = NULL; | |
87 Monitor* CompileThread_lock = NULL; | |
88 Mutex* CompileTaskAlloc_lock = NULL; | |
89 Mutex* CompileStatistics_lock = NULL; | |
90 Mutex* MultiArray_lock = NULL; | |
91 Monitor* Terminator_lock = NULL; | |
92 Monitor* BeforeExit_lock = NULL; | |
93 Monitor* Notify_lock = NULL; | |
94 Monitor* Interrupt_lock = NULL; | |
95 Monitor* ProfileVM_lock = NULL; | |
96 Mutex* ProfilePrint_lock = NULL; | |
97 Mutex* ExceptionCache_lock = NULL; | |
98 Monitor* ObjAllocPost_lock = NULL; | |
99 Mutex* OsrList_lock = NULL; | |
100 #ifndef PRODUCT | |
101 Mutex* FullGCALot_lock = NULL; | |
102 #endif | |
103 | |
104 Mutex* Debug1_lock = NULL; | |
105 Mutex* Debug2_lock = NULL; | |
106 Mutex* Debug3_lock = NULL; | |
107 | |
108 Mutex* tty_lock = NULL; | |
109 | |
110 Mutex* RawMonitor_lock = NULL; | |
111 Mutex* PerfDataMemAlloc_lock = NULL; | |
112 Mutex* PerfDataManager_lock = NULL; | |
113 Mutex* OopMapCacheAlloc_lock = NULL; | |
114 | |
2152 | 115 Mutex* FreeList_lock = NULL; |
116 Monitor* SecondaryFreeList_lock = NULL; | |
117 Mutex* OldSets_lock = NULL; | |
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118 Monitor* RootRegionScan_lock = NULL; |
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119 Mutex* MMUTracker_lock = NULL; |
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120 Mutex* HotCardCache_lock = NULL; |
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121 |
0 | 122 Monitor* GCTaskManager_lock = NULL; |
123 | |
124 Mutex* Management_lock = NULL; | |
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125 Monitor* Service_lock = NULL; |
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126 Monitor* PeriodicTask_lock = NULL; |
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127 |
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128 #ifdef INCLUDE_TRACE |
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129 Mutex* JfrStacktrace_lock = NULL; |
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130 Monitor* JfrMsg_lock = NULL; |
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131 Mutex* JfrBuffer_lock = NULL; |
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132 Mutex* JfrStream_lock = NULL; |
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133 Mutex* JfrThreadGroups_lock = NULL; |
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134 #endif |
0 | 135 |
136 #define MAX_NUM_MUTEX 128 | |
137 static Monitor * _mutex_array[MAX_NUM_MUTEX]; | |
138 static int _num_mutex; | |
139 | |
140 #ifdef ASSERT | |
141 void assert_locked_or_safepoint(const Monitor * lock) { | |
142 // check if this thread owns the lock (common case) | |
143 if (IgnoreLockingAssertions) return; | |
144 assert(lock != NULL, "Need non-NULL lock"); | |
145 if (lock->owned_by_self()) return; | |
146 if (SafepointSynchronize::is_at_safepoint()) return; | |
147 if (!Universe::is_fully_initialized()) return; | |
148 // see if invoker of VM operation owns it | |
149 VM_Operation* op = VMThread::vm_operation(); | |
150 if (op != NULL && op->calling_thread() == lock->owner()) return; | |
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151 fatal(err_msg("must own lock %s", lock->name())); |
0 | 152 } |
153 | |
154 // a stronger assertion than the above | |
155 void assert_lock_strong(const Monitor * lock) { | |
156 if (IgnoreLockingAssertions) return; | |
157 assert(lock != NULL, "Need non-NULL lock"); | |
158 if (lock->owned_by_self()) return; | |
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159 fatal(err_msg("must own lock %s", lock->name())); |
0 | 160 } |
161 #endif | |
162 | |
163 #define def(var, type, pri, vm_block) { \ | |
164 var = new type(Mutex::pri, #var, vm_block); \ | |
165 assert(_num_mutex < MAX_NUM_MUTEX, \ | |
166 "increase MAX_NUM_MUTEX"); \ | |
167 _mutex_array[_num_mutex++] = var; \ | |
168 } | |
169 | |
170 void mutex_init() { | |
171 def(tty_lock , Mutex , event, true ); // allow to lock in VM | |
172 | |
173 def(CGC_lock , Monitor, special, true ); // coordinate between fore- and background GC | |
174 def(STS_init_lock , Mutex, leaf, true ); | |
175 if (UseConcMarkSweepGC) { | |
176 def(iCMS_lock , Monitor, special, true ); // CMS incremental mode start/stop notification | |
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177 } |
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178 if (UseConcMarkSweepGC || UseG1GC) { |
0 | 179 def(FullGCCount_lock , Monitor, leaf, true ); // in support of ExplicitGCInvokesConcurrent |
180 } | |
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181 if (UseG1GC) { |
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182 def(CMark_lock , Monitor, nonleaf, true ); // coordinate concurrent mark thread |
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183 def(CMRegionStack_lock , Mutex, leaf, true ); |
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184 def(SATB_Q_FL_lock , Mutex , special, true ); |
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185 def(SATB_Q_CBL_mon , Monitor, nonleaf, true ); |
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186 def(Shared_SATB_Q_lock , Mutex, nonleaf, true ); |
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187 |
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188 def(DirtyCardQ_FL_lock , Mutex , special, true ); |
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189 def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true ); |
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190 def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true ); |
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191 |
2152 | 192 def(FreeList_lock , Mutex, leaf , true ); |
193 def(SecondaryFreeList_lock , Monitor, leaf , true ); | |
194 def(OldSets_lock , Mutex , leaf , true ); | |
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195 def(RootRegionScan_lock , Monitor, leaf , true ); |
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196 def(MMUTracker_lock , Mutex , leaf , true ); |
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197 def(HotCardCache_lock , Mutex , special , true ); |
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198 def(EvacFailureStack_lock , Mutex , nonleaf , true ); |
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199 } |
0 | 200 def(ParGCRareEvent_lock , Mutex , leaf , true ); |
201 def(DerivedPointerTableGC_lock , Mutex, leaf, true ); | |
202 def(CodeCache_lock , Mutex , special, true ); | |
203 def(Interrupt_lock , Monitor, special, true ); // used for interrupt processing | |
204 def(RawMonitor_lock , Mutex, special, true ); | |
205 def(OopMapCacheAlloc_lock , Mutex, leaf, true ); // used for oop_map_cache allocation. | |
206 | |
207 def(Patching_lock , Mutex , special, true ); // used for safepointing and code patching. | |
208 def(ObjAllocPost_lock , Monitor, special, false); | |
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209 def(Service_lock , Monitor, special, true ); // used for service thread operations |
0 | 210 def(JmethodIdCreation_lock , Mutex , leaf, true ); // used for creating jmethodIDs. |
211 | |
212 def(SystemDictionary_lock , Monitor, leaf, true ); // lookups done by VM thread | |
213 def(PackageTable_lock , Mutex , leaf, false); | |
214 def(InlineCacheBuffer_lock , Mutex , leaf, true ); | |
215 def(VMStatistic_lock , Mutex , leaf, false); | |
216 def(ExpandHeap_lock , Mutex , leaf, true ); // Used during compilation by VM thread | |
217 def(JNIHandleBlockFreeList_lock , Mutex , leaf, true ); // handles are used by VM thread | |
218 def(SignatureHandlerLibrary_lock , Mutex , leaf, false); | |
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219 def(SymbolTable_lock , Mutex , leaf+2, true ); |
0 | 220 def(StringTable_lock , Mutex , leaf, true ); |
221 def(ProfilePrint_lock , Mutex , leaf, false); // serial profile printing | |
222 def(ExceptionCache_lock , Mutex , leaf, false); // serial profile printing | |
223 def(OsrList_lock , Mutex , leaf, true ); | |
224 def(Debug1_lock , Mutex , leaf, true ); | |
225 #ifndef PRODUCT | |
226 def(FullGCALot_lock , Mutex , leaf, false); // a lock to make FullGCALot MT safe | |
227 #endif | |
228 def(BeforeExit_lock , Monitor, leaf, true ); | |
229 def(PerfDataMemAlloc_lock , Mutex , leaf, true ); // used for allocating PerfData memory for performance data | |
230 def(PerfDataManager_lock , Mutex , leaf, true ); // used for synchronized access to PerfDataManager resources | |
231 | |
232 // CMS_modUnionTable_lock leaf | |
233 // CMS_bitMap_lock leaf + 1 | |
234 // CMS_freeList_lock leaf + 2 | |
235 | |
236 def(Safepoint_lock , Monitor, safepoint, true ); // locks SnippetCache_lock/Threads_lock | |
237 | |
238 def(Threads_lock , Monitor, barrier, true ); | |
239 | |
240 def(VMOperationQueue_lock , Monitor, nonleaf, true ); // VM_thread allowed to block on these | |
241 def(VMOperationRequest_lock , Monitor, nonleaf, true ); | |
242 def(RetData_lock , Mutex , nonleaf, false); | |
243 def(Terminator_lock , Monitor, nonleaf, true ); | |
244 def(VtableStubs_lock , Mutex , nonleaf, true ); | |
245 def(Notify_lock , Monitor, nonleaf, true ); | |
246 def(JNIGlobalHandle_lock , Mutex , nonleaf, true ); // locks JNIHandleBlockFreeList_lock | |
247 def(JNICritical_lock , Monitor, nonleaf, true ); // used for JNI critical regions | |
248 def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true); | |
249 if (UseConcMarkSweepGC) { | |
250 def(SLT_lock , Monitor, nonleaf, false ); | |
251 // used in CMS GC for locking PLL lock | |
252 } | |
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253 def(Heap_lock , Monitor, nonleaf+1, false); |
0 | 254 def(JfieldIdCreation_lock , Mutex , nonleaf+1, true ); // jfieldID, Used in VM_Operation |
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255 def(MemberNameTable_lock , Mutex , nonleaf+1, false); // Used to protect MemberNameTable |
0 | 256 |
257 def(CompiledIC_lock , Mutex , nonleaf+2, false); // locks VtableStubs_lock, InlineCacheBuffer_lock | |
258 def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true ); | |
259 def(CompileStatistics_lock , Mutex , nonleaf+2, false); | |
260 def(MultiArray_lock , Mutex , nonleaf+2, false); // locks SymbolTable_lock | |
261 | |
262 def(JvmtiThreadState_lock , Mutex , nonleaf+2, false); // Used by JvmtiThreadState/JvmtiEventController | |
263 def(JvmtiPendingEvent_lock , Monitor, nonleaf, false); // Used by JvmtiCodeBlobEvents | |
264 def(Management_lock , Mutex , nonleaf+2, false); // used for JVM management | |
265 | |
266 def(Compile_lock , Mutex , nonleaf+3, true ); | |
267 def(MethodData_lock , Mutex , nonleaf+3, false); | |
268 | |
269 def(MethodCompileQueue_lock , Monitor, nonleaf+4, true ); | |
270 def(Debug2_lock , Mutex , nonleaf+4, true ); | |
271 def(Debug3_lock , Mutex , nonleaf+4, true ); | |
10405 | 272 def(ProfileVM_lock , Monitor, special, false); // used for profiling of the VMThread |
0 | 273 def(CompileThread_lock , Monitor, nonleaf+5, false ); |
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274 def(PeriodicTask_lock , Monitor, nonleaf+5, true); |
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275 |
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276 #ifdef INCLUDE_TRACE |
10405 | 277 def(JfrMsg_lock , Monitor, leaf, true); |
278 def(JfrBuffer_lock , Mutex, nonleaf+1, true); | |
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279 def(JfrThreadGroups_lock , Mutex, nonleaf+1, true); |
10405 | 280 def(JfrStream_lock , Mutex, nonleaf+2, true); |
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281 def(JfrStacktrace_lock , Mutex, special, true ); |
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282 #endif |
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283 |
0 | 284 } |
285 | |
286 GCMutexLocker::GCMutexLocker(Monitor * mutex) { | |
287 if (SafepointSynchronize::is_at_safepoint()) { | |
288 _locked = false; | |
289 } else { | |
290 _mutex = mutex; | |
291 _locked = true; | |
292 _mutex->lock(); | |
293 } | |
294 } | |
295 | |
296 // Print all mutexes/monitors that are currently owned by a thread; called | |
297 // by fatal error handler. | |
298 void print_owned_locks_on_error(outputStream* st) { | |
299 st->print("VM Mutex/Monitor currently owned by a thread: "); | |
300 bool none = true; | |
301 for (int i = 0; i < _num_mutex; i++) { | |
302 // see if it has an owner | |
303 if (_mutex_array[i]->owner() != NULL) { | |
304 if (none) { | |
305 // print format used by Mutex::print_on_error() | |
306 st->print_cr(" ([mutex/lock_event])"); | |
307 none = false; | |
308 } | |
309 _mutex_array[i]->print_on_error(st); | |
310 st->cr(); | |
311 } | |
312 } | |
313 if (none) st->print_cr("None"); | |
314 } |