Mercurial > hg > truffle
annotate src/share/vm/runtime/mutexLocker.cpp @ 21049:319fbbdb8fb1
Clean up dead Iterable nodes in TypedGraphNodeIterator
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 15 Apr 2015 11:07:53 -0700 |
parents | 7848fc12602b |
children |
rev | line source |
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0 | 1 /* |
17764 | 2 * Copyright (c) 1997, 2014, 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; | |
17764 | 61 Monitor* StringDedupQueue_lock = NULL; |
62 Mutex* StringDedupTable_lock = NULL; | |
0 | 63 Mutex* CodeCache_lock = NULL; |
64 Mutex* MethodData_lock = NULL; | |
65 Mutex* RetData_lock = NULL; | |
66 Monitor* VMOperationQueue_lock = NULL; | |
67 Monitor* VMOperationRequest_lock = NULL; | |
68 Monitor* Safepoint_lock = NULL; | |
69 Monitor* SerializePage_lock = NULL; | |
70 Monitor* Threads_lock = NULL; | |
71 Monitor* CGC_lock = NULL; | |
20192 | 72 Monitor* STS_lock = NULL; |
0 | 73 Monitor* SLT_lock = NULL; |
74 Monitor* iCMS_lock = NULL; | |
75 Monitor* FullGCCount_lock = NULL; | |
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76 Monitor* CMark_lock = NULL; |
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77 Mutex* CMRegionStack_lock = NULL; |
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78 Mutex* SATB_Q_FL_lock = NULL; |
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79 Monitor* SATB_Q_CBL_mon = NULL; |
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80 Mutex* Shared_SATB_Q_lock = NULL; |
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81 Mutex* DirtyCardQ_FL_lock = NULL; |
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82 Monitor* DirtyCardQ_CBL_mon = NULL; |
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83 Mutex* Shared_DirtyCardQ_lock = NULL; |
0 | 84 Mutex* ParGCRareEvent_lock = NULL; |
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85 Mutex* EvacFailureStack_lock = NULL; |
0 | 86 Mutex* DerivedPointerTableGC_lock = NULL; |
87 Mutex* Compile_lock = NULL; | |
88 Monitor* MethodCompileQueue_lock = NULL; | |
89 Monitor* CompileThread_lock = NULL; | |
90 Mutex* CompileTaskAlloc_lock = NULL; | |
91 Mutex* CompileStatistics_lock = NULL; | |
92 Mutex* MultiArray_lock = NULL; | |
93 Monitor* Terminator_lock = NULL; | |
94 Monitor* BeforeExit_lock = NULL; | |
95 Monitor* Notify_lock = NULL; | |
96 Monitor* Interrupt_lock = NULL; | |
97 Monitor* ProfileVM_lock = NULL; | |
98 Mutex* ProfilePrint_lock = NULL; | |
99 Mutex* ExceptionCache_lock = NULL; | |
100 Monitor* ObjAllocPost_lock = NULL; | |
101 Mutex* OsrList_lock = NULL; | |
102 #ifndef PRODUCT | |
103 Mutex* FullGCALot_lock = NULL; | |
104 #endif | |
105 | |
106 Mutex* Debug1_lock = NULL; | |
107 Mutex* Debug2_lock = NULL; | |
108 Mutex* Debug3_lock = NULL; | |
109 | |
110 Mutex* tty_lock = NULL; | |
111 | |
112 Mutex* RawMonitor_lock = NULL; | |
113 Mutex* PerfDataMemAlloc_lock = NULL; | |
114 Mutex* PerfDataManager_lock = NULL; | |
115 Mutex* OopMapCacheAlloc_lock = NULL; | |
116 | |
2152 | 117 Mutex* FreeList_lock = NULL; |
118 Monitor* SecondaryFreeList_lock = NULL; | |
119 Mutex* OldSets_lock = NULL; | |
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120 Monitor* RootRegionScan_lock = NULL; |
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121 Mutex* MMUTracker_lock = NULL; |
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122 Mutex* HotCardCache_lock = NULL; |
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123 |
0 | 124 Monitor* GCTaskManager_lock = NULL; |
125 | |
126 Mutex* Management_lock = NULL; | |
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127 Monitor* Service_lock = NULL; |
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128 Monitor* PeriodicTask_lock = NULL; |
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129 |
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130 #ifdef INCLUDE_TRACE |
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131 Mutex* JfrStacktrace_lock = NULL; |
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132 Monitor* JfrMsg_lock = NULL; |
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133 Mutex* JfrBuffer_lock = NULL; |
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134 Mutex* JfrStream_lock = NULL; |
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135 Mutex* JfrThreadGroups_lock = NULL; |
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136 #endif |
0 | 137 |
138 #define MAX_NUM_MUTEX 128 | |
139 static Monitor * _mutex_array[MAX_NUM_MUTEX]; | |
140 static int _num_mutex; | |
141 | |
142 #ifdef ASSERT | |
143 void assert_locked_or_safepoint(const Monitor * lock) { | |
144 // check if this thread owns the lock (common case) | |
145 if (IgnoreLockingAssertions) return; | |
146 assert(lock != NULL, "Need non-NULL lock"); | |
147 if (lock->owned_by_self()) return; | |
148 if (SafepointSynchronize::is_at_safepoint()) return; | |
149 if (!Universe::is_fully_initialized()) return; | |
150 // see if invoker of VM operation owns it | |
151 VM_Operation* op = VMThread::vm_operation(); | |
152 if (op != NULL && op->calling_thread() == lock->owner()) return; | |
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153 fatal(err_msg("must own lock %s", lock->name())); |
0 | 154 } |
155 | |
156 // a stronger assertion than the above | |
157 void assert_lock_strong(const Monitor * lock) { | |
158 if (IgnoreLockingAssertions) return; | |
159 assert(lock != NULL, "Need non-NULL lock"); | |
160 if (lock->owned_by_self()) return; | |
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161 fatal(err_msg("must own lock %s", lock->name())); |
0 | 162 } |
163 #endif | |
164 | |
165 #define def(var, type, pri, vm_block) { \ | |
166 var = new type(Mutex::pri, #var, vm_block); \ | |
167 assert(_num_mutex < MAX_NUM_MUTEX, \ | |
168 "increase MAX_NUM_MUTEX"); \ | |
169 _mutex_array[_num_mutex++] = var; \ | |
170 } | |
171 | |
172 void mutex_init() { | |
173 def(tty_lock , Mutex , event, true ); // allow to lock in VM | |
174 | |
175 def(CGC_lock , Monitor, special, true ); // coordinate between fore- and background GC | |
20192 | 176 def(STS_lock , Monitor, leaf, true ); |
0 | 177 if (UseConcMarkSweepGC) { |
178 def(iCMS_lock , Monitor, special, true ); // CMS incremental mode start/stop notification | |
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179 } |
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180 if (UseConcMarkSweepGC || UseG1GC) { |
0 | 181 def(FullGCCount_lock , Monitor, leaf, true ); // in support of ExplicitGCInvokesConcurrent |
182 } | |
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183 if (UseG1GC) { |
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184 def(CMark_lock , Monitor, nonleaf, true ); // coordinate concurrent mark thread |
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185 def(CMRegionStack_lock , Mutex, leaf, true ); |
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186 def(SATB_Q_FL_lock , Mutex , special, true ); |
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187 def(SATB_Q_CBL_mon , Monitor, nonleaf, true ); |
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188 def(Shared_SATB_Q_lock , Mutex, nonleaf, true ); |
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189 |
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190 def(DirtyCardQ_FL_lock , Mutex , special, true ); |
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191 def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true ); |
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192 def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true ); |
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193 |
2152 | 194 def(FreeList_lock , Mutex, leaf , true ); |
195 def(SecondaryFreeList_lock , Monitor, leaf , true ); | |
196 def(OldSets_lock , Mutex , leaf , true ); | |
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197 def(RootRegionScan_lock , Monitor, leaf , true ); |
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198 def(MMUTracker_lock , Mutex , leaf , true ); |
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199 def(HotCardCache_lock , Mutex , special , true ); |
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200 def(EvacFailureStack_lock , Mutex , nonleaf , true ); |
17764 | 201 |
202 def(StringDedupQueue_lock , Monitor, leaf, true ); | |
203 def(StringDedupTable_lock , Mutex , leaf, true ); | |
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204 } |
0 | 205 def(ParGCRareEvent_lock , Mutex , leaf , true ); |
206 def(DerivedPointerTableGC_lock , Mutex, leaf, true ); | |
207 def(CodeCache_lock , Mutex , special, true ); | |
208 def(Interrupt_lock , Monitor, special, true ); // used for interrupt processing | |
209 def(RawMonitor_lock , Mutex, special, true ); | |
210 def(OopMapCacheAlloc_lock , Mutex, leaf, true ); // used for oop_map_cache allocation. | |
211 | |
212 def(Patching_lock , Mutex , special, true ); // used for safepointing and code patching. | |
213 def(ObjAllocPost_lock , Monitor, special, false); | |
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214 def(Service_lock , Monitor, special, true ); // used for service thread operations |
0 | 215 def(JmethodIdCreation_lock , Mutex , leaf, true ); // used for creating jmethodIDs. |
216 | |
217 def(SystemDictionary_lock , Monitor, leaf, true ); // lookups done by VM thread | |
218 def(PackageTable_lock , Mutex , leaf, false); | |
219 def(InlineCacheBuffer_lock , Mutex , leaf, true ); | |
220 def(VMStatistic_lock , Mutex , leaf, false); | |
221 def(ExpandHeap_lock , Mutex , leaf, true ); // Used during compilation by VM thread | |
222 def(JNIHandleBlockFreeList_lock , Mutex , leaf, true ); // handles are used by VM thread | |
223 def(SignatureHandlerLibrary_lock , Mutex , leaf, false); | |
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224 def(SymbolTable_lock , Mutex , leaf+2, true ); |
0 | 225 def(StringTable_lock , Mutex , leaf, true ); |
226 def(ProfilePrint_lock , Mutex , leaf, false); // serial profile printing | |
227 def(ExceptionCache_lock , Mutex , leaf, false); // serial profile printing | |
228 def(OsrList_lock , Mutex , leaf, true ); | |
229 def(Debug1_lock , Mutex , leaf, true ); | |
230 #ifndef PRODUCT | |
231 def(FullGCALot_lock , Mutex , leaf, false); // a lock to make FullGCALot MT safe | |
232 #endif | |
233 def(BeforeExit_lock , Monitor, leaf, true ); | |
234 def(PerfDataMemAlloc_lock , Mutex , leaf, true ); // used for allocating PerfData memory for performance data | |
235 def(PerfDataManager_lock , Mutex , leaf, true ); // used for synchronized access to PerfDataManager resources | |
236 | |
237 // CMS_modUnionTable_lock leaf | |
238 // CMS_bitMap_lock leaf + 1 | |
239 // CMS_freeList_lock leaf + 2 | |
240 | |
241 def(Safepoint_lock , Monitor, safepoint, true ); // locks SnippetCache_lock/Threads_lock | |
242 | |
243 def(Threads_lock , Monitor, barrier, true ); | |
244 | |
245 def(VMOperationQueue_lock , Monitor, nonleaf, true ); // VM_thread allowed to block on these | |
246 def(VMOperationRequest_lock , Monitor, nonleaf, true ); | |
247 def(RetData_lock , Mutex , nonleaf, false); | |
248 def(Terminator_lock , Monitor, nonleaf, true ); | |
249 def(VtableStubs_lock , Mutex , nonleaf, true ); | |
250 def(Notify_lock , Monitor, nonleaf, true ); | |
251 def(JNIGlobalHandle_lock , Mutex , nonleaf, true ); // locks JNIHandleBlockFreeList_lock | |
252 def(JNICritical_lock , Monitor, nonleaf, true ); // used for JNI critical regions | |
253 def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true); | |
254 if (UseConcMarkSweepGC) { | |
255 def(SLT_lock , Monitor, nonleaf, false ); | |
256 // used in CMS GC for locking PLL lock | |
257 } | |
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258 def(Heap_lock , Monitor, nonleaf+1, false); |
0 | 259 def(JfieldIdCreation_lock , Mutex , nonleaf+1, true ); // jfieldID, Used in VM_Operation |
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260 def(MemberNameTable_lock , Mutex , nonleaf+1, false); // Used to protect MemberNameTable |
0 | 261 |
262 def(CompiledIC_lock , Mutex , nonleaf+2, false); // locks VtableStubs_lock, InlineCacheBuffer_lock | |
263 def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true ); | |
264 def(CompileStatistics_lock , Mutex , nonleaf+2, false); | |
265 def(MultiArray_lock , Mutex , nonleaf+2, false); // locks SymbolTable_lock | |
266 | |
267 def(JvmtiThreadState_lock , Mutex , nonleaf+2, false); // Used by JvmtiThreadState/JvmtiEventController | |
268 def(JvmtiPendingEvent_lock , Monitor, nonleaf, false); // Used by JvmtiCodeBlobEvents | |
269 def(Management_lock , Mutex , nonleaf+2, false); // used for JVM management | |
270 | |
271 def(Compile_lock , Mutex , nonleaf+3, true ); | |
272 def(MethodData_lock , Mutex , nonleaf+3, false); | |
273 | |
274 def(MethodCompileQueue_lock , Monitor, nonleaf+4, true ); | |
275 def(Debug2_lock , Mutex , nonleaf+4, true ); | |
276 def(Debug3_lock , Mutex , nonleaf+4, true ); | |
10405 | 277 def(ProfileVM_lock , Monitor, special, false); // used for profiling of the VMThread |
0 | 278 def(CompileThread_lock , Monitor, nonleaf+5, false ); |
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279 def(PeriodicTask_lock , Monitor, nonleaf+5, true); |
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280 |
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281 #ifdef INCLUDE_TRACE |
10405 | 282 def(JfrMsg_lock , Monitor, leaf, true); |
283 def(JfrBuffer_lock , Mutex, nonleaf+1, true); | |
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284 def(JfrThreadGroups_lock , Mutex, nonleaf+1, true); |
10405 | 285 def(JfrStream_lock , Mutex, nonleaf+2, true); |
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286 def(JfrStacktrace_lock , Mutex, special, true ); |
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287 #endif |
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288 |
0 | 289 } |
290 | |
291 GCMutexLocker::GCMutexLocker(Monitor * mutex) { | |
292 if (SafepointSynchronize::is_at_safepoint()) { | |
293 _locked = false; | |
294 } else { | |
295 _mutex = mutex; | |
296 _locked = true; | |
297 _mutex->lock(); | |
298 } | |
299 } | |
300 | |
301 // Print all mutexes/monitors that are currently owned by a thread; called | |
302 // by fatal error handler. | |
303 void print_owned_locks_on_error(outputStream* st) { | |
304 st->print("VM Mutex/Monitor currently owned by a thread: "); | |
305 bool none = true; | |
306 for (int i = 0; i < _num_mutex; i++) { | |
307 // see if it has an owner | |
308 if (_mutex_array[i]->owner() != NULL) { | |
309 if (none) { | |
310 // print format used by Mutex::print_on_error() | |
311 st->print_cr(" ([mutex/lock_event])"); | |
312 none = false; | |
313 } | |
314 _mutex_array[i]->print_on_error(st); | |
315 st->cr(); | |
316 } | |
317 } | |
318 if (none) st->print_cr("None"); | |
319 } |