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;
185 if (UseG1GC) {
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);
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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 Monitor* ShenandoahMemProtect_lock = NULL;
60 Mutex* ExpandHeap_lock = NULL;
61 Mutex* AdapterHandlerLibrary_lock = NULL;
62 Mutex* SignatureHandlerLibrary_lock = NULL;
63 Mutex* VtableStubs_lock = NULL;
64 Mutex* SymbolTable_lock = NULL;
65 Mutex* StringTable_lock = NULL;
66 Monitor* StringDedupQueue_lock = NULL;
67 Mutex* StringDedupTable_lock = NULL;
68 Monitor* CodeCache_lock = NULL;
69 Mutex* MethodData_lock = NULL;
70 Mutex* TouchedMethodLog_lock = NULL;
71 Mutex* RetData_lock = NULL;
72 Monitor* VMOperationQueue_lock = NULL;
73 Monitor* VMOperationRequest_lock = NULL;
74 Monitor* Safepoint_lock = NULL;
75 Monitor* SerializePage_lock = NULL;
76 Monitor* Threads_lock = NULL;
77 Monitor* CGC_lock = NULL;
78 Monitor* STS_lock = NULL;
79 Monitor* SLT_lock = NULL;
189 if (UseG1GC) {
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 def(ShenandoahHeap_lock , Monitor, special, false, Monitor::_safepoint_check_never);
218 }
219 def(ParGCRareEvent_lock , Mutex , leaf , true, Monitor::_safepoint_check_sometimes);
220 def(DerivedPointerTableGC_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
221 def(CodeCache_lock , Mutex , special, true, Monitor::_safepoint_check_never);
222 def(Interrupt_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for interrupt processing
223 def(RawMonitor_lock , Mutex, special, true, Monitor::_safepoint_check_never);
224 def(OopMapCacheAlloc_lock , Mutex, leaf, true, Monitor::_safepoint_check_always); // used for oop_map_cache allocation.
225
226 def(Patching_lock , Mutex , special, true, Monitor::_safepoint_check_never); // used for safepointing and code patching.
227 def(ObjAllocPost_lock , Monitor, special, false, Monitor::_safepoint_check_never);
228 def(Service_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for service thread operations
229 def(JmethodIdCreation_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // used for creating jmethodIDs.
230
231 def(SystemDictionary_lock , Monitor, leaf, true, Monitor::_safepoint_check_always); // lookups done by VM thread
232 def(PackageTable_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
233 def(InlineCacheBuffer_lock , Mutex , leaf, true, Monitor::_safepoint_check_always);
234 def(VMStatistic_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
235 def(ExpandHeap_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // Used during compilation by VM thread
236 def(JNIHandleBlockFreeList_lock , Mutex , leaf, true, Monitor::_safepoint_check_never); // handles are used by VM thread
237 def(SignatureHandlerLibrary_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
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