36 // set at JVM startup-time, they should never be subsequently mutated.
37 // Instead of using pointers to malloc()ed monitors and mutexes we should consider
38 // eliminating the indirection and using instances instead.
39 // Consider using GCC's __read_mostly.
40
41 Mutex* Patching_lock = NULL;
42 Monitor* SystemDictionary_lock = NULL;
43 Mutex* PackageTable_lock = NULL;
44 Mutex* CompiledIC_lock = NULL;
45 Mutex* InlineCacheBuffer_lock = NULL;
46 Mutex* VMStatistic_lock = NULL;
47 Mutex* JNIGlobalHandle_lock = NULL;
48 Mutex* JNIHandleBlockFreeList_lock = NULL;
49 Mutex* MemberNameTable_lock = NULL;
50 Mutex* JmethodIdCreation_lock = NULL;
51 Mutex* JfieldIdCreation_lock = NULL;
52 Monitor* JNICritical_lock = NULL;
53 Mutex* JvmtiThreadState_lock = NULL;
54 Monitor* JvmtiPendingEvent_lock = NULL;
55 Monitor* Heap_lock = NULL;
56 Mutex* ExpandHeap_lock = NULL;
57 Mutex* AdapterHandlerLibrary_lock = NULL;
58 Mutex* SignatureHandlerLibrary_lock = NULL;
59 Mutex* VtableStubs_lock = NULL;
60 Mutex* SymbolTable_lock = NULL;
61 Mutex* StringTable_lock = NULL;
62 Monitor* StringDedupQueue_lock = NULL;
63 Mutex* StringDedupTable_lock = NULL;
64 Monitor* CodeCache_lock = NULL;
65 Mutex* MethodData_lock = NULL;
66 Mutex* TouchedMethodLog_lock = NULL;
67 Mutex* RetData_lock = NULL;
68 Monitor* VMOperationQueue_lock = NULL;
69 Monitor* VMOperationRequest_lock = NULL;
70 Monitor* Safepoint_lock = NULL;
71 Monitor* SerializePage_lock = NULL;
72 Monitor* Threads_lock = NULL;
73 Monitor* CGC_lock = NULL;
74 Monitor* STS_lock = NULL;
75 Monitor* SLT_lock = NULL;
83 Monitor* DirtyCardQ_CBL_mon = NULL;
84 Mutex* Shared_DirtyCardQ_lock = NULL;
85 Mutex* ParGCRareEvent_lock = NULL;
86 Mutex* DerivedPointerTableGC_lock = NULL;
87 Mutex* Compile_lock = NULL;
88 Monitor* MethodCompileQueue_lock = NULL;
89 Monitor* CompileThread_lock = NULL;
90 Monitor* Compilation_lock = NULL;
91 Mutex* CompileTaskAlloc_lock = NULL;
92 Mutex* CompileStatistics_lock = NULL;
93 Mutex* MultiArray_lock = NULL;
94 Monitor* Terminator_lock = NULL;
95 Monitor* BeforeExit_lock = NULL;
96 Monitor* Notify_lock = NULL;
97 Monitor* Interrupt_lock = NULL;
98 Monitor* ProfileVM_lock = NULL;
99 Mutex* ProfilePrint_lock = NULL;
100 Mutex* ExceptionCache_lock = NULL;
101 Monitor* ObjAllocPost_lock = NULL;
102 Mutex* OsrList_lock = NULL;
103
104 #ifndef PRODUCT
105 Mutex* FullGCALot_lock = NULL;
106 #endif
107
108 Mutex* Debug1_lock = NULL;
109 Mutex* Debug2_lock = NULL;
110 Mutex* Debug3_lock = NULL;
111
112 Mutex* tty_lock = NULL;
113
114 Mutex* RawMonitor_lock = NULL;
115 Mutex* PerfDataMemAlloc_lock = NULL;
116 Mutex* PerfDataManager_lock = NULL;
117 Mutex* OopMapCacheAlloc_lock = NULL;
118
119 Mutex* FreeList_lock = NULL;
120 Monitor* SecondaryFreeList_lock = NULL;
121 Mutex* OldSets_lock = NULL;
122 Monitor* RootRegionScan_lock = NULL;
186
187 def(CMark_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_never); // coordinate concurrent mark thread
188 def(CMRegionStack_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
189 def(SATB_Q_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
190 def(SATB_Q_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
191 def(Shared_SATB_Q_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
192
193 def(DirtyCardQ_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
194 def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
195 def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
196
197 def(FreeList_lock , Mutex, leaf , true, Monitor::_safepoint_check_never);
198 def(SecondaryFreeList_lock , Monitor, leaf , true, Monitor::_safepoint_check_never);
199 def(OldSets_lock , Mutex , leaf , true, Monitor::_safepoint_check_never);
200 def(RootRegionScan_lock , Monitor, leaf , true, Monitor::_safepoint_check_never);
201 def(MMUTracker_lock , Mutex , leaf , true, Monitor::_safepoint_check_never);
202
203 def(StringDedupQueue_lock , Monitor, leaf, true, Monitor::_safepoint_check_never);
204 def(StringDedupTable_lock , Mutex , leaf, true, Monitor::_safepoint_check_never);
205 }
206 def(ParGCRareEvent_lock , Mutex , leaf , true, Monitor::_safepoint_check_sometimes);
207 def(DerivedPointerTableGC_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
208 def(CodeCache_lock , Mutex , special, true, Monitor::_safepoint_check_never);
209 def(Interrupt_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for interrupt processing
210 def(RawMonitor_lock , Mutex, special, true, Monitor::_safepoint_check_never);
211 def(OopMapCacheAlloc_lock , Mutex, leaf, true, Monitor::_safepoint_check_always); // used for oop_map_cache allocation.
212
213 def(Patching_lock , Mutex , special, true, Monitor::_safepoint_check_never); // used for safepointing and code patching.
214 def(ObjAllocPost_lock , Monitor, special, false, Monitor::_safepoint_check_never);
215 def(Service_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for service thread operations
216 def(JmethodIdCreation_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // used for creating jmethodIDs.
217
218 def(SystemDictionary_lock , Monitor, leaf, true, Monitor::_safepoint_check_always); // lookups done by VM thread
219 def(PackageTable_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
220 def(InlineCacheBuffer_lock , Mutex , leaf, true, Monitor::_safepoint_check_always);
221 def(VMStatistic_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
222 def(ExpandHeap_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // Used during compilation by VM thread
223 def(JNIHandleBlockFreeList_lock , Mutex , leaf, true, Monitor::_safepoint_check_never); // handles are used by VM thread
224 def(SignatureHandlerLibrary_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
225 def(SymbolTable_lock , Mutex , leaf+2, true, Monitor::_safepoint_check_always);
240 // CMS_freeList_lock leaf 2
241
242 def(Safepoint_lock , Monitor, safepoint, true, Monitor::_safepoint_check_sometimes); // locks SnippetCache_lock/Threads_lock
243
244 def(Threads_lock , Monitor, barrier, true, Monitor::_safepoint_check_sometimes);
245
246 def(VMOperationQueue_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes); // VM_thread allowed to block on these
247 def(VMOperationRequest_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes);
248 def(RetData_lock , Mutex , nonleaf, false, Monitor::_safepoint_check_always);
249 def(Terminator_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes);
250 def(VtableStubs_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always);
251 def(Notify_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_always);
252 def(JNIGlobalHandle_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always); // locks JNIHandleBlockFreeList_lock
253 def(JNICritical_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_always); // used for JNI critical regions
254 def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always);
255 if (UseConcMarkSweepGC) {
256 def(SLT_lock , Monitor, nonleaf, false, Monitor::_safepoint_check_never); // used in CMS GC for locking PLL lock
257 }
258
259 def(Heap_lock , Monitor, nonleaf+1, false, Monitor::_safepoint_check_sometimes);
260 def(JfieldIdCreation_lock , Mutex , nonleaf+1, true, Monitor::_safepoint_check_always); // jfieldID, Used in VM_Operation
261 def(MemberNameTable_lock , Mutex , nonleaf+1, false, Monitor::_safepoint_check_always); // Used to protect MemberNameTable
262
263 def(CompiledIC_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // locks VtableStubs_lock, InlineCacheBuffer_lock
264 def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true, Monitor::_safepoint_check_always);
265 def(CompileStatistics_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always);
266 def(MultiArray_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // locks SymbolTable_lock
267
268 def(JvmtiThreadState_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // Used by JvmtiThreadState/JvmtiEventController
269 def(JvmtiPendingEvent_lock , Monitor, nonleaf, false, Monitor::_safepoint_check_never); // Used by JvmtiCodeBlobEvents
270 def(Management_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // used for JVM management
271
272 def(Compile_lock , Mutex , nonleaf+3, true, Monitor::_safepoint_check_sometimes);
273 def(MethodData_lock , Mutex , nonleaf+3, false, Monitor::_safepoint_check_always);
274 def(TouchedMethodLog_lock , Mutex , nonleaf+3, false, Monitor::_safepoint_check_always);
275
276 def(MethodCompileQueue_lock , Monitor, nonleaf+4, true, Monitor::_safepoint_check_always);
277 def(Debug2_lock , Mutex , nonleaf+4, true, Monitor::_safepoint_check_never);
278 def(Debug3_lock , Mutex , nonleaf+4, true, Monitor::_safepoint_check_never);
279 def(ProfileVM_lock , Monitor, special, false, Monitor::_safepoint_check_never); // used for profiling of the VMThread
|
36 // set at JVM startup-time, they should never be subsequently mutated.
37 // Instead of using pointers to malloc()ed monitors and mutexes we should consider
38 // eliminating the indirection and using instances instead.
39 // Consider using GCC's __read_mostly.
40
41 Mutex* Patching_lock = NULL;
42 Monitor* SystemDictionary_lock = NULL;
43 Mutex* PackageTable_lock = NULL;
44 Mutex* CompiledIC_lock = NULL;
45 Mutex* InlineCacheBuffer_lock = NULL;
46 Mutex* VMStatistic_lock = NULL;
47 Mutex* JNIGlobalHandle_lock = NULL;
48 Mutex* JNIHandleBlockFreeList_lock = NULL;
49 Mutex* MemberNameTable_lock = NULL;
50 Mutex* JmethodIdCreation_lock = NULL;
51 Mutex* JfieldIdCreation_lock = NULL;
52 Monitor* JNICritical_lock = NULL;
53 Mutex* JvmtiThreadState_lock = NULL;
54 Monitor* JvmtiPendingEvent_lock = NULL;
55 Monitor* Heap_lock = NULL;
56 Monitor* ShenandoahHeap_lock = NULL;
57 Monitor* ShenandoahFullGC_lock = NULL;
58 Monitor* ShenandoahJNICritical_lock = NULL;
59 Mutex* ExpandHeap_lock = NULL;
60 Mutex* AdapterHandlerLibrary_lock = NULL;
61 Mutex* SignatureHandlerLibrary_lock = NULL;
62 Mutex* VtableStubs_lock = NULL;
63 Mutex* SymbolTable_lock = NULL;
64 Mutex* StringTable_lock = NULL;
65 Monitor* StringDedupQueue_lock = NULL;
66 Mutex* StringDedupTable_lock = NULL;
67 Monitor* CodeCache_lock = NULL;
68 Mutex* MethodData_lock = NULL;
69 Mutex* TouchedMethodLog_lock = NULL;
70 Mutex* RetData_lock = NULL;
71 Monitor* VMOperationQueue_lock = NULL;
72 Monitor* VMOperationRequest_lock = NULL;
73 Monitor* Safepoint_lock = NULL;
74 Monitor* SerializePage_lock = NULL;
75 Monitor* Threads_lock = NULL;
76 Monitor* CGC_lock = NULL;
77 Monitor* STS_lock = NULL;
78 Monitor* SLT_lock = NULL;
86 Monitor* DirtyCardQ_CBL_mon = NULL;
87 Mutex* Shared_DirtyCardQ_lock = NULL;
88 Mutex* ParGCRareEvent_lock = NULL;
89 Mutex* DerivedPointerTableGC_lock = NULL;
90 Mutex* Compile_lock = NULL;
91 Monitor* MethodCompileQueue_lock = NULL;
92 Monitor* CompileThread_lock = NULL;
93 Monitor* Compilation_lock = NULL;
94 Mutex* CompileTaskAlloc_lock = NULL;
95 Mutex* CompileStatistics_lock = NULL;
96 Mutex* MultiArray_lock = NULL;
97 Monitor* Terminator_lock = NULL;
98 Monitor* BeforeExit_lock = NULL;
99 Monitor* Notify_lock = NULL;
100 Monitor* Interrupt_lock = NULL;
101 Monitor* ProfileVM_lock = NULL;
102 Mutex* ProfilePrint_lock = NULL;
103 Mutex* ExceptionCache_lock = NULL;
104 Monitor* ObjAllocPost_lock = NULL;
105 Mutex* OsrList_lock = NULL;
106 Monitor* ShenandoahMemProtect_lock = NULL;
107
108 #ifndef PRODUCT
109 Mutex* FullGCALot_lock = NULL;
110 #endif
111
112 Mutex* Debug1_lock = NULL;
113 Mutex* Debug2_lock = NULL;
114 Mutex* Debug3_lock = NULL;
115
116 Mutex* tty_lock = NULL;
117
118 Mutex* RawMonitor_lock = NULL;
119 Mutex* PerfDataMemAlloc_lock = NULL;
120 Mutex* PerfDataManager_lock = NULL;
121 Mutex* OopMapCacheAlloc_lock = NULL;
122
123 Mutex* FreeList_lock = NULL;
124 Monitor* SecondaryFreeList_lock = NULL;
125 Mutex* OldSets_lock = NULL;
126 Monitor* RootRegionScan_lock = NULL;
190
191 def(CMark_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_never); // coordinate concurrent mark thread
192 def(CMRegionStack_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
193 def(SATB_Q_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
194 def(SATB_Q_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
195 def(Shared_SATB_Q_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
196
197 def(DirtyCardQ_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
198 def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
199 def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
200
201 def(FreeList_lock , Mutex, leaf , true, Monitor::_safepoint_check_never);
202 def(SecondaryFreeList_lock , Monitor, leaf , true, Monitor::_safepoint_check_never);
203 def(OldSets_lock , Mutex , leaf , true, Monitor::_safepoint_check_never);
204 def(RootRegionScan_lock , Monitor, leaf , true, Monitor::_safepoint_check_never);
205 def(MMUTracker_lock , Mutex , leaf , true, Monitor::_safepoint_check_never);
206
207 def(StringDedupQueue_lock , Monitor, leaf, true, Monitor::_safepoint_check_never);
208 def(StringDedupTable_lock , Mutex , leaf, true, Monitor::_safepoint_check_never);
209 }
210 if (UseShenandoahGC) {
211 def(SATB_Q_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
212 def(SATB_Q_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
213 def(Shared_SATB_Q_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
214 def(ShenandoahFullGC_lock , Monitor, leaf, true, Monitor::_safepoint_check_always);
215 def(ShenandoahJNICritical_lock , Monitor, nonleaf+1, false, Monitor::_safepoint_check_never);
216 def(ShenandoahMemProtect_lock , Monitor, native, false, Monitor::_safepoint_check_never);
217 }
218 def(ParGCRareEvent_lock , Mutex , leaf , true, Monitor::_safepoint_check_sometimes);
219 def(DerivedPointerTableGC_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
220 def(CodeCache_lock , Mutex , special, true, Monitor::_safepoint_check_never);
221 def(Interrupt_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for interrupt processing
222 def(RawMonitor_lock , Mutex, special, true, Monitor::_safepoint_check_never);
223 def(OopMapCacheAlloc_lock , Mutex, leaf, true, Monitor::_safepoint_check_always); // used for oop_map_cache allocation.
224
225 def(Patching_lock , Mutex , special, true, Monitor::_safepoint_check_never); // used for safepointing and code patching.
226 def(ObjAllocPost_lock , Monitor, special, false, Monitor::_safepoint_check_never);
227 def(Service_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for service thread operations
228 def(JmethodIdCreation_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // used for creating jmethodIDs.
229
230 def(SystemDictionary_lock , Monitor, leaf, true, Monitor::_safepoint_check_always); // lookups done by VM thread
231 def(PackageTable_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
232 def(InlineCacheBuffer_lock , Mutex , leaf, true, Monitor::_safepoint_check_always);
233 def(VMStatistic_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
234 def(ExpandHeap_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // Used during compilation by VM thread
235 def(JNIHandleBlockFreeList_lock , Mutex , leaf, true, Monitor::_safepoint_check_never); // handles are used by VM thread
236 def(SignatureHandlerLibrary_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
237 def(SymbolTable_lock , Mutex , leaf+2, true, Monitor::_safepoint_check_always);
252 // CMS_freeList_lock leaf 2
253
254 def(Safepoint_lock , Monitor, safepoint, true, Monitor::_safepoint_check_sometimes); // locks SnippetCache_lock/Threads_lock
255
256 def(Threads_lock , Monitor, barrier, true, Monitor::_safepoint_check_sometimes);
257
258 def(VMOperationQueue_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes); // VM_thread allowed to block on these
259 def(VMOperationRequest_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes);
260 def(RetData_lock , Mutex , nonleaf, false, Monitor::_safepoint_check_always);
261 def(Terminator_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes);
262 def(VtableStubs_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always);
263 def(Notify_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_always);
264 def(JNIGlobalHandle_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always); // locks JNIHandleBlockFreeList_lock
265 def(JNICritical_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_always); // used for JNI critical regions
266 def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always);
267 if (UseConcMarkSweepGC) {
268 def(SLT_lock , Monitor, nonleaf, false, Monitor::_safepoint_check_never); // used in CMS GC for locking PLL lock
269 }
270
271 def(Heap_lock , Monitor, nonleaf+1, false, Monitor::_safepoint_check_sometimes);
272 def(ShenandoahHeap_lock , Monitor, special, false, Monitor::_safepoint_check_never);
273 def(JfieldIdCreation_lock , Mutex , nonleaf+1, true, Monitor::_safepoint_check_always); // jfieldID, Used in VM_Operation
274 def(MemberNameTable_lock , Mutex , nonleaf+1, false, Monitor::_safepoint_check_always); // Used to protect MemberNameTable
275
276 def(CompiledIC_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // locks VtableStubs_lock, InlineCacheBuffer_lock
277 def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true, Monitor::_safepoint_check_always);
278 def(CompileStatistics_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always);
279 def(MultiArray_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // locks SymbolTable_lock
280
281 def(JvmtiThreadState_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // Used by JvmtiThreadState/JvmtiEventController
282 def(JvmtiPendingEvent_lock , Monitor, nonleaf, false, Monitor::_safepoint_check_never); // Used by JvmtiCodeBlobEvents
283 def(Management_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // used for JVM management
284
285 def(Compile_lock , Mutex , nonleaf+3, true, Monitor::_safepoint_check_sometimes);
286 def(MethodData_lock , Mutex , nonleaf+3, false, Monitor::_safepoint_check_always);
287 def(TouchedMethodLog_lock , Mutex , nonleaf+3, false, Monitor::_safepoint_check_always);
288
289 def(MethodCompileQueue_lock , Monitor, nonleaf+4, true, Monitor::_safepoint_check_always);
290 def(Debug2_lock , Mutex , nonleaf+4, true, Monitor::_safepoint_check_never);
291 def(Debug3_lock , Mutex , nonleaf+4, true, Monitor::_safepoint_check_never);
292 def(ProfileVM_lock , Monitor, special, false, Monitor::_safepoint_check_never); // used for profiling of the VMThread
|