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annotate src/share/vm/runtime/vm_operations.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 5f24d0319e54 |
| children | ce6848d0666d |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2009, 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 | |
| 25 // The following classes are used for operations | |
| 26 // initiated by a Java thread but that must | |
| 27 // take place in the VMThread. | |
| 28 | |
| 29 #define VM_OP_ENUM(type) VMOp_##type, | |
| 30 | |
| 31 // Note: When new VM_XXX comes up, add 'XXX' to the template table. | |
| 32 #define VM_OPS_DO(template) \ | |
| 33 template(Dummy) \ | |
| 34 template(ThreadStop) \ | |
| 35 template(ThreadDump) \ | |
| 36 template(PrintThreads) \ | |
| 37 template(FindDeadlocks) \ | |
| 38 template(ForceSafepoint) \ | |
| 39 template(ForceAsyncSafepoint) \ | |
| 40 template(Deoptimize) \ | |
| 41 template(DeoptimizeFrame) \ | |
| 42 template(DeoptimizeAll) \ | |
| 43 template(ZombieAll) \ | |
| 1202 | 44 template(HandleFullCodeCache) \ |
| 0 | 45 template(Verify) \ |
| 46 template(PrintJNI) \ | |
| 47 template(HeapDumper) \ | |
| 48 template(DeoptimizeTheWorld) \ | |
| 49 template(GC_HeapInspection) \ | |
| 50 template(GenCollectFull) \ | |
| 51 template(GenCollectFullConcurrent) \ | |
| 52 template(GenCollectForAllocation) \ | |
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53 template(GenCollectForPermanentAllocation) \ |
| 0 | 54 template(ParallelGCFailedAllocation) \ |
| 55 template(ParallelGCFailedPermanentAllocation) \ | |
| 56 template(ParallelGCSystemGC) \ | |
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57 template(CGC_Operation) \ |
| 0 | 58 template(CMS_Initial_Mark) \ |
| 59 template(CMS_Final_Remark) \ | |
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60 template(G1CollectFull) \ |
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61 template(G1CollectForAllocation) \ |
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62 template(G1IncCollectionPause) \ |
| 0 | 63 template(EnableBiasedLocking) \ |
| 64 template(RevokeBias) \ | |
| 65 template(BulkRevokeBias) \ | |
| 66 template(PopulateDumpSharedSpace) \ | |
| 67 template(JNIFunctionTableCopier) \ | |
| 68 template(RedefineClasses) \ | |
| 69 template(GetOwnedMonitorInfo) \ | |
| 70 template(GetObjectMonitorUsage) \ | |
| 71 template(GetCurrentContendedMonitor) \ | |
| 72 template(GetStackTrace) \ | |
| 73 template(GetMultipleStackTraces) \ | |
| 74 template(GetAllStackTraces) \ | |
| 75 template(GetThreadListStackTraces) \ | |
| 76 template(GetFrameCount) \ | |
| 77 template(GetFrameLocation) \ | |
| 78 template(ChangeBreakpoints) \ | |
| 79 template(GetOrSetLocal) \ | |
| 80 template(GetCurrentLocation) \ | |
| 81 template(EnterInterpOnlyMode) \ | |
| 82 template(ChangeSingleStep) \ | |
| 83 template(HeapWalkOperation) \ | |
| 84 template(HeapIterateOperation) \ | |
| 85 template(ReportJavaOutOfMemory) \ | |
| 86 template(Exit) \ | |
| 87 | |
| 88 class VM_Operation: public CHeapObj { | |
| 89 public: | |
| 90 enum Mode { | |
| 91 _safepoint, // blocking, safepoint, vm_op C-heap allocated | |
| 92 _no_safepoint, // blocking, no safepoint, vm_op C-Heap allocated | |
| 93 _concurrent, // non-blocking, no safepoint, vm_op C-Heap allocated | |
| 94 _async_safepoint // non-blocking, safepoint, vm_op C-Heap allocated | |
| 95 }; | |
| 96 | |
| 97 enum VMOp_Type { | |
| 98 VM_OPS_DO(VM_OP_ENUM) | |
| 99 VMOp_Terminating | |
| 100 }; | |
| 101 | |
| 102 private: | |
| 103 Thread* _calling_thread; | |
| 104 ThreadPriority _priority; | |
| 105 long _timestamp; | |
| 106 VM_Operation* _next; | |
| 107 VM_Operation* _prev; | |
| 108 | |
| 109 // The VM operation name array | |
| 110 static const char* _names[]; | |
| 111 | |
| 112 public: | |
| 113 VM_Operation() { _calling_thread = NULL; _next = NULL; _prev = NULL; } | |
| 114 virtual ~VM_Operation() {} | |
| 115 | |
| 116 // VM operation support (used by VM thread) | |
| 117 Thread* calling_thread() const { return _calling_thread; } | |
| 118 ThreadPriority priority() { return _priority; } | |
| 119 void set_calling_thread(Thread* thread, ThreadPriority priority); | |
| 120 | |
| 121 long timestamp() const { return _timestamp; } | |
| 122 void set_timestamp(long timestamp) { _timestamp = timestamp; } | |
| 123 | |
| 124 // Called by VM thread - does in turn invoke doit(). Do not override this | |
| 125 void evaluate(); | |
| 126 | |
| 127 // evaluate() is called by the VMThread and in turn calls doit(). | |
| 128 // If the thread invoking VMThread::execute((VM_Operation*) is a JavaThread, | |
| 129 // doit_prologue() is called in that thread before transferring control to | |
| 130 // the VMThread. | |
| 131 // If doit_prologue() returns true the VM operation will proceed, and | |
| 132 // doit_epilogue() will be called by the JavaThread once the VM operation | |
| 133 // completes. If doit_prologue() returns false the VM operation is cancelled. | |
| 134 virtual void doit() = 0; | |
| 135 virtual bool doit_prologue() { return true; }; | |
| 136 virtual void doit_epilogue() {}; // Note: Not called if mode is: _concurrent | |
| 137 | |
| 138 // Type test | |
| 139 virtual bool is_methodCompiler() const { return false; } | |
| 140 | |
| 141 // Linking | |
| 142 VM_Operation *next() const { return _next; } | |
| 143 VM_Operation *prev() const { return _prev; } | |
| 144 void set_next(VM_Operation *next) { _next = next; } | |
| 145 void set_prev(VM_Operation *prev) { _prev = prev; } | |
| 146 | |
| 147 // Configuration. Override these appropriatly in subclasses. | |
| 148 virtual VMOp_Type type() const = 0; | |
| 149 virtual Mode evaluation_mode() const { return _safepoint; } | |
| 150 virtual bool allow_nested_vm_operations() const { return false; } | |
| 151 virtual bool is_cheap_allocated() const { return false; } | |
| 152 virtual void oops_do(OopClosure* f) { /* do nothing */ }; | |
| 153 | |
| 154 // CAUTION: <don't hang yourself with following rope> | |
| 155 // If you override these methods, make sure that the evaluation | |
| 156 // of these methods is race-free and non-blocking, since these | |
| 157 // methods may be evaluated either by the mutators or by the | |
| 158 // vm thread, either concurrently with mutators or with the mutators | |
| 159 // stopped. In other words, taking locks is verboten, and if there | |
| 160 // are any races in evaluating the conditions, they'd better be benign. | |
| 161 virtual bool evaluate_at_safepoint() const { | |
| 162 return evaluation_mode() == _safepoint || | |
| 163 evaluation_mode() == _async_safepoint; | |
| 164 } | |
| 165 virtual bool evaluate_concurrently() const { | |
| 166 return evaluation_mode() == _concurrent || | |
| 167 evaluation_mode() == _async_safepoint; | |
| 168 } | |
| 169 | |
| 170 // Debugging | |
| 171 void print_on_error(outputStream* st) const; | |
| 172 const char* name() const { return _names[type()]; } | |
| 173 static const char* name(int type) { | |
| 174 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
| 175 return _names[type]; | |
| 176 } | |
| 177 #ifndef PRODUCT | |
| 178 void print_on(outputStream* st) const { print_on_error(st); } | |
| 179 #endif | |
| 180 }; | |
| 181 | |
| 182 class VM_ThreadStop: public VM_Operation { | |
| 183 private: | |
| 184 oop _thread; // The Thread that the Throwable is thrown against | |
| 185 oop _throwable; // The Throwable thrown at the target Thread | |
| 186 public: | |
| 187 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
| 188 // VM operation is executed. | |
| 189 VM_ThreadStop(oop thread, oop throwable) { | |
| 190 _thread = thread; | |
| 191 _throwable = throwable; | |
| 192 } | |
| 193 VMOp_Type type() const { return VMOp_ThreadStop; } | |
| 194 oop target_thread() const { return _thread; } | |
| 195 oop throwable() const { return _throwable;} | |
| 196 void doit(); | |
| 197 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
| 198 bool allow_nested_vm_operations() const { return true; } | |
| 199 Mode evaluation_mode() const { return _async_safepoint; } | |
| 200 bool is_cheap_allocated() const { return true; } | |
| 201 | |
| 202 // GC support | |
| 203 void oops_do(OopClosure* f) { | |
| 204 f->do_oop(&_thread); f->do_oop(&_throwable); | |
| 205 } | |
| 206 }; | |
| 207 | |
| 208 // dummy vm op, evaluated just to force a safepoint | |
| 209 class VM_ForceSafepoint: public VM_Operation { | |
| 210 public: | |
| 211 VM_ForceSafepoint() {} | |
| 212 void doit() {} | |
| 213 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
| 214 }; | |
| 215 | |
| 216 // dummy vm op, evaluated just to force a safepoint | |
| 217 class VM_ForceAsyncSafepoint: public VM_Operation { | |
| 218 public: | |
| 219 VM_ForceAsyncSafepoint() {} | |
| 220 void doit() {} | |
| 221 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
| 222 Mode evaluation_mode() const { return _async_safepoint; } | |
| 223 bool is_cheap_allocated() const { return true; } | |
| 224 }; | |
| 225 | |
| 226 class VM_Deoptimize: public VM_Operation { | |
| 227 public: | |
| 228 VM_Deoptimize() {} | |
| 229 VMOp_Type type() const { return VMOp_Deoptimize; } | |
| 230 void doit(); | |
| 231 bool allow_nested_vm_operations() const { return true; } | |
| 232 }; | |
| 233 | |
| 234 class VM_DeoptimizeFrame: public VM_Operation { | |
| 235 private: | |
| 236 JavaThread* _thread; | |
| 237 intptr_t* _id; | |
| 238 public: | |
| 239 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id); | |
| 240 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
| 241 void doit(); | |
| 242 bool allow_nested_vm_operations() const { return true; } | |
| 243 }; | |
| 244 | |
| 1202 | 245 class VM_HandleFullCodeCache: public VM_Operation { |
| 246 private: | |
| 247 bool _is_full; | |
| 248 public: | |
| 249 VM_HandleFullCodeCache(bool is_full) { _is_full = is_full; } | |
| 250 VMOp_Type type() const { return VMOp_HandleFullCodeCache; } | |
| 251 void doit(); | |
| 252 bool allow_nested_vm_operations() const { return true; } | |
| 253 }; | |
| 254 | |
| 0 | 255 #ifndef PRODUCT |
| 256 class VM_DeoptimizeAll: public VM_Operation { | |
| 257 private: | |
| 258 KlassHandle _dependee; | |
| 259 public: | |
| 260 VM_DeoptimizeAll() {} | |
| 261 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
| 262 void doit(); | |
| 263 bool allow_nested_vm_operations() const { return true; } | |
| 264 }; | |
| 265 | |
| 266 | |
| 267 class VM_ZombieAll: public VM_Operation { | |
| 268 public: | |
| 269 VM_ZombieAll() {} | |
| 270 VMOp_Type type() const { return VMOp_ZombieAll; } | |
| 271 void doit(); | |
| 272 bool allow_nested_vm_operations() const { return true; } | |
| 273 }; | |
| 274 #endif // PRODUCT | |
| 275 | |
| 276 class VM_Verify: public VM_Operation { | |
| 277 private: | |
| 278 KlassHandle _dependee; | |
| 279 public: | |
| 280 VM_Verify() {} | |
| 281 VMOp_Type type() const { return VMOp_Verify; } | |
| 282 void doit(); | |
| 283 }; | |
| 284 | |
| 285 | |
| 286 class VM_PrintThreads: public VM_Operation { | |
| 287 private: | |
| 288 outputStream* _out; | |
| 289 bool _print_concurrent_locks; | |
| 290 public: | |
| 291 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
| 292 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
| 293 VMOp_Type type() const { return VMOp_PrintThreads; } | |
| 294 void doit(); | |
| 295 bool doit_prologue(); | |
| 296 void doit_epilogue(); | |
| 297 }; | |
| 298 | |
| 299 class VM_PrintJNI: public VM_Operation { | |
| 300 private: | |
| 301 outputStream* _out; | |
| 302 public: | |
| 303 VM_PrintJNI() { _out = tty; } | |
| 304 VM_PrintJNI(outputStream* out) { _out = out; } | |
| 305 VMOp_Type type() const { return VMOp_PrintJNI; } | |
| 306 void doit(); | |
| 307 }; | |
| 308 | |
| 309 class DeadlockCycle; | |
| 310 class VM_FindDeadlocks: public VM_Operation { | |
| 311 private: | |
| 312 bool _concurrent_locks; | |
| 313 DeadlockCycle* _deadlocks; | |
| 314 outputStream* _out; | |
| 315 | |
| 316 public: | |
| 317 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
| 318 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
| 319 ~VM_FindDeadlocks(); | |
| 320 | |
| 321 DeadlockCycle* result() { return _deadlocks; }; | |
| 322 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
| 323 void doit(); | |
| 324 bool doit_prologue(); | |
| 325 }; | |
| 326 | |
| 327 class ThreadDumpResult; | |
| 328 class ThreadSnapshot; | |
| 329 class ThreadConcurrentLocks; | |
| 330 | |
| 331 class VM_ThreadDump : public VM_Operation { | |
| 332 private: | |
| 333 ThreadDumpResult* _result; | |
| 334 int _num_threads; | |
| 335 GrowableArray<instanceHandle>* _threads; | |
| 336 int _max_depth; | |
| 337 bool _with_locked_monitors; | |
| 338 bool _with_locked_synchronizers; | |
| 339 | |
| 340 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
| 341 | |
| 342 public: | |
| 343 VM_ThreadDump(ThreadDumpResult* result, | |
| 344 int max_depth, // -1 indicates entire stack | |
| 345 bool with_locked_monitors, | |
| 346 bool with_locked_synchronizers); | |
| 347 | |
| 348 VM_ThreadDump(ThreadDumpResult* result, | |
| 349 GrowableArray<instanceHandle>* threads, | |
| 350 int num_threads, // -1 indicates entire stack | |
| 351 int max_depth, | |
| 352 bool with_locked_monitors, | |
| 353 bool with_locked_synchronizers); | |
| 354 | |
| 355 VMOp_Type type() const { return VMOp_ThreadDump; } | |
| 356 void doit(); | |
| 357 bool doit_prologue(); | |
| 358 void doit_epilogue(); | |
| 359 }; | |
| 360 | |
| 361 | |
| 362 class VM_Exit: public VM_Operation { | |
| 363 private: | |
| 364 int _exit_code; | |
| 365 static volatile bool _vm_exited; | |
| 366 static Thread * _shutdown_thread; | |
| 367 static void wait_if_vm_exited(); | |
| 368 public: | |
| 369 VM_Exit(int exit_code) { | |
| 370 _exit_code = exit_code; | |
| 371 } | |
| 372 static int wait_for_threads_in_native_to_block(); | |
| 373 static int set_vm_exited(); | |
| 374 static bool vm_exited() { return _vm_exited; } | |
| 375 static void block_if_vm_exited() { | |
| 376 if (_vm_exited) { | |
| 377 wait_if_vm_exited(); | |
| 378 } | |
| 379 } | |
| 380 VMOp_Type type() const { return VMOp_Exit; } | |
| 381 void doit(); | |
| 382 }; |