Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/mutexLocker.hpp @ 10292:acac2b03a07f
8014765: VM exits if MaxTenuringThreshold is set below the default InitialTenuringThreshold, and InitialTenuringThreshold is not set
Summary: The VM exits when the condition in the subject line applies. The fix sets InitialTenuringThreshold to MaxTenuringThreshold if it is larger than MaxTenuringThreshold and InitialTenuringThreshold has not been set (is default).
Reviewed-by: jwilhelm, jmasa, brutisso, johnc
author | tschatzl |
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date | Thu, 16 May 2013 23:51:51 +0200 |
parents | 6337ca4dcad8 |
children | 836a62f43af9 739c309fd729 bdd155477289 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 #ifndef SHARE_VM_RUNTIME_MUTEXLOCKER_HPP |
26 #define SHARE_VM_RUNTIME_MUTEXLOCKER_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 #include "runtime/mutex.hpp" | |
30 #ifdef TARGET_OS_FAMILY_linux | |
31 # include "os_linux.inline.hpp" | |
32 #endif | |
33 #ifdef TARGET_OS_FAMILY_solaris | |
34 # include "os_solaris.inline.hpp" | |
35 #endif | |
36 #ifdef TARGET_OS_FAMILY_windows | |
37 # include "os_windows.inline.hpp" | |
38 #endif | |
3960 | 39 #ifdef TARGET_OS_FAMILY_bsd |
40 # include "os_bsd.inline.hpp" | |
41 #endif | |
1972 | 42 |
0 | 43 // Mutexes used in the VM. |
44 | |
45 extern Mutex* Patching_lock; // a lock used to guard code patching of compiled code | |
46 extern Monitor* SystemDictionary_lock; // a lock on the system dictonary | |
47 extern Mutex* PackageTable_lock; // a lock on the class loader package table | |
48 extern Mutex* CompiledIC_lock; // a lock used to guard compiled IC patching and access | |
49 extern Mutex* InlineCacheBuffer_lock; // a lock used to guard the InlineCacheBuffer | |
50 extern Mutex* VMStatistic_lock; // a lock used to guard statistics count increment | |
51 extern Mutex* JNIGlobalHandle_lock; // a lock on creating JNI global handles | |
52 extern Mutex* JNIHandleBlockFreeList_lock; // a lock on the JNI handle block free list | |
53 extern Mutex* JNICachedItableIndex_lock; // a lock on caching an itable index during JNI invoke | |
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54 extern Mutex* MemberNameTable_lock; // a lock on the MemberNameTable updates |
0 | 55 extern Mutex* JmethodIdCreation_lock; // a lock on creating JNI method identifiers |
56 extern Mutex* JfieldIdCreation_lock; // a lock on creating JNI static field identifiers | |
57 extern Monitor* JNICritical_lock; // a lock used while entering and exiting JNI critical regions, allows GC to sometimes get in | |
58 extern Mutex* JvmtiThreadState_lock; // a lock on modification of JVMTI thread data | |
59 extern Monitor* JvmtiPendingEvent_lock; // a lock on the JVMTI pending events list | |
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60 extern Monitor* Heap_lock; // a lock on the heap |
0 | 61 extern Mutex* ExpandHeap_lock; // a lock on expanding the heap |
62 extern Mutex* AdapterHandlerLibrary_lock; // a lock on the AdapterHandlerLibrary | |
63 extern Mutex* SignatureHandlerLibrary_lock; // a lock on the SignatureHandlerLibrary | |
64 extern Mutex* VtableStubs_lock; // a lock on the VtableStubs | |
65 extern Mutex* SymbolTable_lock; // a lock on the symbol table | |
66 extern Mutex* StringTable_lock; // a lock on the interned string table | |
67 extern Mutex* CodeCache_lock; // a lock on the CodeCache, rank is special, use MutexLockerEx | |
68 extern Mutex* MethodData_lock; // a lock on installation of method data | |
69 extern Mutex* RetData_lock; // a lock on installation of RetData inside method data | |
70 extern Mutex* DerivedPointerTableGC_lock; // a lock to protect the derived pointer table | |
71 extern Monitor* VMOperationQueue_lock; // a lock on queue of vm_operations waiting to execute | |
72 extern Monitor* VMOperationRequest_lock; // a lock on Threads waiting for a vm_operation to terminate | |
73 extern Monitor* Safepoint_lock; // a lock used by the safepoint abstraction | |
74 extern Monitor* Threads_lock; // a lock on the Threads table of active Java threads | |
75 // (also used by Safepoints too to block threads creation/destruction) | |
76 extern Monitor* CGC_lock; // used for coordination between | |
77 // fore- & background GC threads. | |
78 extern Mutex* STS_init_lock; // coordinate initialization of SuspendibleThreadSets. | |
79 extern Monitor* SLT_lock; // used in CMS GC for acquiring PLL | |
80 extern Monitor* iCMS_lock; // CMS incremental mode start/stop notification | |
81 extern Monitor* FullGCCount_lock; // in support of "concurrent" full gc | |
342
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82 extern Monitor* CMark_lock; // used for concurrent mark thread coordination |
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83 extern Mutex* CMRegionStack_lock; // used for protecting accesses to the CM region stack |
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84 extern Mutex* SATB_Q_FL_lock; // Protects SATB Q |
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85 // buffer free list. |
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86 extern Monitor* SATB_Q_CBL_mon; // Protects SATB Q |
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87 // completed buffer queue. |
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88 extern Mutex* Shared_SATB_Q_lock; // Lock protecting SATB |
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89 // queue shared by |
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90 // non-Java threads. |
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91 |
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92 extern Mutex* DirtyCardQ_FL_lock; // Protects dirty card Q |
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93 // buffer free list. |
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94 extern Monitor* DirtyCardQ_CBL_mon; // Protects dirty card Q |
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95 // completed buffer queue. |
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96 extern Mutex* Shared_DirtyCardQ_lock; // Lock protecting dirty card |
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97 // queue shared by |
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98 // non-Java threads. |
0 | 99 // (see option ExplicitGCInvokesConcurrent) |
100 extern Mutex* ParGCRareEvent_lock; // Synchronizes various (rare) parallel GC ops. | |
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101 extern Mutex* EvacFailureStack_lock; // guards the evac failure scan stack |
0 | 102 extern Mutex* Compile_lock; // a lock held when Compilation is updating code (used to block CodeCache traversal, CHA updates, etc) |
103 extern Monitor* MethodCompileQueue_lock; // a lock held when method compilations are enqueued, dequeued | |
104 extern Monitor* CompileThread_lock; // a lock held by compile threads during compilation system initialization | |
105 extern Mutex* CompileTaskAlloc_lock; // a lock held when CompileTasks are allocated | |
106 extern Mutex* CompileStatistics_lock; // a lock held when updating compilation statistics | |
107 extern Mutex* MultiArray_lock; // a lock used to guard allocation of multi-dim arrays | |
108 extern Monitor* Terminator_lock; // a lock used to guard termination of the vm | |
109 extern Monitor* BeforeExit_lock; // a lock used to guard cleanups and shutdown hooks | |
110 extern Monitor* Notify_lock; // a lock used to synchronize the start-up of the vm | |
111 extern Monitor* Interrupt_lock; // a lock used for condition variable mediated interrupt processing | |
112 extern Monitor* ProfileVM_lock; // a lock used for profiling the VMThread | |
113 extern Mutex* ProfilePrint_lock; // a lock used to serialize the printing of profiles | |
114 extern Mutex* ExceptionCache_lock; // a lock used to synchronize exception cache updates | |
115 extern Mutex* OsrList_lock; // a lock used to serialize access to OSR queues | |
116 | |
117 #ifndef PRODUCT | |
118 extern Mutex* FullGCALot_lock; // a lock to make FullGCALot MT safe | |
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119 #endif // PRODUCT |
0 | 120 extern Mutex* Debug1_lock; // A bunch of pre-allocated locks that can be used for tracing |
121 extern Mutex* Debug2_lock; // down synchronization related bugs! | |
122 extern Mutex* Debug3_lock; | |
123 | |
124 extern Mutex* RawMonitor_lock; | |
125 extern Mutex* PerfDataMemAlloc_lock; // a lock on the allocator for PerfData memory for performance data | |
126 extern Mutex* PerfDataManager_lock; // a long on access to PerfDataManager resources | |
127 extern Mutex* ParkerFreeList_lock; | |
128 extern Mutex* OopMapCacheAlloc_lock; // protects allocation of oop_map caches | |
129 | |
2152 | 130 extern Mutex* FreeList_lock; // protects the free region list during safepoints |
131 extern Monitor* SecondaryFreeList_lock; // protects the secondary free region list | |
132 extern Mutex* OldSets_lock; // protects the old region sets | |
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133 extern Monitor* RootRegionScan_lock; // used to notify that the CM threads have finished scanning the IM snapshot regions |
342
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134 extern Mutex* MMUTracker_lock; // protects the MMU |
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135 // tracker data structures |
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136 extern Mutex* HotCardCache_lock; // protects the hot card cache |
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137 |
0 | 138 extern Mutex* Management_lock; // a lock used to serialize JVM management |
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139 extern Monitor* Service_lock; // a lock used for service thread operation |
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140 extern Mutex* Stacktrace_lock; // used to guard access to the stacktrace table |
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141 |
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142 extern Monitor* JfrQuery_lock; // protects JFR use |
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143 extern Monitor* JfrMsg_lock; // protects JFR messaging |
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144 extern Mutex* JfrBuffer_lock; // protects JFR buffer operations |
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145 extern Mutex* JfrStream_lock; // protects JFR stream access |
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146 extern Monitor* PeriodicTask_lock; // protects the periodic task structure |
0 | 147 |
148 // A MutexLocker provides mutual exclusion with respect to a given mutex | |
149 // for the scope which contains the locker. The lock is an OS lock, not | |
150 // an object lock, and the two do not interoperate. Do not use Mutex-based | |
151 // locks to lock on Java objects, because they will not be respected if a | |
152 // that object is locked using the Java locking mechanism. | |
153 // | |
154 // NOTE WELL!! | |
155 // | |
156 // See orderAccess.hpp. We assume throughout the VM that MutexLocker's | |
157 // and friends constructors do a fence, a lock and an acquire *in that | |
158 // order*. And that their destructors do a release and unlock, in *that* | |
159 // order. If their implementations change such that these assumptions | |
160 // are violated, a whole lot of code will break. | |
161 | |
162 // Print all mutexes/monitors that are currently owned by a thread; called | |
163 // by fatal error handler. | |
164 void print_owned_locks_on_error(outputStream* st); | |
165 | |
166 char *lock_name(Mutex *mutex); | |
167 | |
168 class MutexLocker: StackObj { | |
169 private: | |
170 Monitor * _mutex; | |
171 public: | |
172 MutexLocker(Monitor * mutex) { | |
173 assert(mutex->rank() != Mutex::special, | |
174 "Special ranked mutex should only use MutexLockerEx"); | |
175 _mutex = mutex; | |
176 _mutex->lock(); | |
177 } | |
178 | |
179 // Overloaded constructor passing current thread | |
180 MutexLocker(Monitor * mutex, Thread *thread) { | |
181 assert(mutex->rank() != Mutex::special, | |
182 "Special ranked mutex should only use MutexLockerEx"); | |
183 _mutex = mutex; | |
184 _mutex->lock(thread); | |
185 } | |
186 | |
187 ~MutexLocker() { | |
188 _mutex->unlock(); | |
189 } | |
190 | |
191 }; | |
192 | |
193 // for debugging: check that we're already owning this lock (or are at a safepoint) | |
194 #ifdef ASSERT | |
195 void assert_locked_or_safepoint(const Monitor * lock); | |
196 void assert_lock_strong(const Monitor * lock); | |
197 #else | |
198 #define assert_locked_or_safepoint(lock) | |
199 #define assert_lock_strong(lock) | |
200 #endif | |
201 | |
202 // A MutexLockerEx behaves like a MutexLocker when its constructor is | |
203 // called with a Mutex. Unlike a MutexLocker, its constructor can also be | |
204 // called with NULL, in which case the MutexLockerEx is a no-op. There | |
205 // is also a corresponding MutexUnlockerEx. We want to keep the | |
206 // basic MutexLocker as fast as possible. MutexLockerEx can also lock | |
207 // without safepoint check. | |
208 | |
209 class MutexLockerEx: public StackObj { | |
210 private: | |
211 Monitor * _mutex; | |
212 public: | |
213 MutexLockerEx(Monitor * mutex, bool no_safepoint_check = !Mutex::_no_safepoint_check_flag) { | |
214 _mutex = mutex; | |
215 if (_mutex != NULL) { | |
216 assert(mutex->rank() > Mutex::special || no_safepoint_check, | |
217 "Mutexes with rank special or lower should not do safepoint checks"); | |
218 if (no_safepoint_check) | |
219 _mutex->lock_without_safepoint_check(); | |
220 else | |
221 _mutex->lock(); | |
222 } | |
223 } | |
224 | |
225 ~MutexLockerEx() { | |
226 if (_mutex != NULL) { | |
227 _mutex->unlock(); | |
228 } | |
229 } | |
230 }; | |
231 | |
232 // A MonitorLockerEx is like a MutexLockerEx above, except it takes | |
233 // a possibly null Monitor, and allows wait/notify as well which are | |
234 // delegated to the underlying Monitor. | |
235 | |
236 class MonitorLockerEx: public MutexLockerEx { | |
237 private: | |
238 Monitor * _monitor; | |
239 public: | |
240 MonitorLockerEx(Monitor* monitor, | |
241 bool no_safepoint_check = !Mutex::_no_safepoint_check_flag): | |
242 MutexLockerEx(monitor, no_safepoint_check), | |
243 _monitor(monitor) { | |
244 // Superclass constructor did locking | |
245 } | |
246 | |
247 ~MonitorLockerEx() { | |
248 #ifdef ASSERT | |
249 if (_monitor != NULL) { | |
250 assert_lock_strong(_monitor); | |
251 } | |
252 #endif // ASSERT | |
253 // Superclass destructor will do unlocking | |
254 } | |
255 | |
256 bool wait(bool no_safepoint_check = !Mutex::_no_safepoint_check_flag, | |
257 long timeout = 0, | |
258 bool as_suspend_equivalent = !Mutex::_as_suspend_equivalent_flag) { | |
259 if (_monitor != NULL) { | |
260 return _monitor->wait(no_safepoint_check, timeout, as_suspend_equivalent); | |
261 } | |
262 return false; | |
263 } | |
264 | |
265 bool notify_all() { | |
266 if (_monitor != NULL) { | |
267 return _monitor->notify_all(); | |
268 } | |
269 return true; | |
270 } | |
271 | |
272 bool notify() { | |
273 if (_monitor != NULL) { | |
274 return _monitor->notify(); | |
275 } | |
276 return true; | |
277 } | |
278 }; | |
279 | |
280 | |
281 | |
282 // A GCMutexLocker is usually initialized with a mutex that is | |
283 // automatically acquired in order to do GC. The function that | |
284 // synchronizes using a GCMutexLocker may be called both during and between | |
285 // GC's. Thus, it must acquire the mutex if GC is not in progress, but not | |
286 // if GC is in progress (since the mutex is already held on its behalf.) | |
287 | |
288 class GCMutexLocker: public StackObj { | |
289 private: | |
290 Monitor * _mutex; | |
291 bool _locked; | |
292 public: | |
293 GCMutexLocker(Monitor * mutex); | |
294 ~GCMutexLocker() { if (_locked) _mutex->unlock(); } | |
295 }; | |
296 | |
297 | |
298 | |
299 // A MutexUnlocker temporarily exits a previously | |
300 // entered mutex for the scope which contains the unlocker. | |
301 | |
302 class MutexUnlocker: StackObj { | |
303 private: | |
304 Monitor * _mutex; | |
305 | |
306 public: | |
307 MutexUnlocker(Monitor * mutex) { | |
308 _mutex = mutex; | |
309 _mutex->unlock(); | |
310 } | |
311 | |
312 ~MutexUnlocker() { | |
313 _mutex->lock(); | |
314 } | |
315 }; | |
316 | |
317 // A MutexUnlockerEx temporarily exits a previously | |
318 // entered mutex for the scope which contains the unlocker. | |
319 | |
320 class MutexUnlockerEx: StackObj { | |
321 private: | |
322 Monitor * _mutex; | |
323 bool _no_safepoint_check; | |
324 | |
325 public: | |
326 MutexUnlockerEx(Monitor * mutex, bool no_safepoint_check = !Mutex::_no_safepoint_check_flag) { | |
327 _mutex = mutex; | |
328 _no_safepoint_check = no_safepoint_check; | |
329 _mutex->unlock(); | |
330 } | |
331 | |
332 ~MutexUnlockerEx() { | |
333 if (_no_safepoint_check == Mutex::_no_safepoint_check_flag) { | |
334 _mutex->lock_without_safepoint_check(); | |
335 } else { | |
336 _mutex->lock(); | |
337 } | |
338 } | |
339 }; | |
340 | |
341 #ifndef PRODUCT | |
342 // | |
343 // A special MutexLocker that allows: | |
344 // - reentrant locking | |
345 // - locking out of order | |
346 // | |
347 // Only too be used for verify code, where we can relaxe out dead-lock | |
348 // dection code a bit (unsafe, but probably ok). This code is NEVER to | |
349 // be included in a product version. | |
350 // | |
351 class VerifyMutexLocker: StackObj { | |
352 private: | |
353 Monitor * _mutex; | |
354 bool _reentrant; | |
355 public: | |
356 VerifyMutexLocker(Monitor * mutex) { | |
357 _mutex = mutex; | |
358 _reentrant = mutex->owned_by_self(); | |
359 if (!_reentrant) { | |
360 // We temp. diable strict safepoint checking, while we require the lock | |
361 FlagSetting fs(StrictSafepointChecks, false); | |
362 _mutex->lock(); | |
363 } | |
364 } | |
365 | |
366 ~VerifyMutexLocker() { | |
367 if (!_reentrant) { | |
368 _mutex->unlock(); | |
369 } | |
370 } | |
371 }; | |
372 | |
373 #endif | |
1972 | 374 |
375 #endif // SHARE_VM_RUNTIME_MUTEXLOCKER_HPP |