Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_operations.hpp @ 7212:291ffc492eb6
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 14 Dec 2012 14:35:13 +0100 |
| parents | e522a00b91aa |
| children | b9a918201d47 |
| rev | line source |
|---|---|
| 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_VM_OPERATIONS_HPP |
| 26 #define SHARE_VM_RUNTIME_VM_OPERATIONS_HPP | |
| 27 | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "memory/allocation.hpp" | |
| 30 #include "oops/oop.hpp" | |
| 31 #include "runtime/thread.hpp" | |
| 32 #include "utilities/top.hpp" | |
| 33 | |
| 0 | 34 // The following classes are used for operations |
| 35 // initiated by a Java thread but that must | |
| 36 // take place in the VMThread. | |
| 37 | |
| 38 #define VM_OP_ENUM(type) VMOp_##type, | |
| 39 | |
| 40 // Note: When new VM_XXX comes up, add 'XXX' to the template table. | |
| 41 #define VM_OPS_DO(template) \ | |
| 42 template(Dummy) \ | |
| 43 template(ThreadStop) \ | |
| 44 template(ThreadDump) \ | |
| 45 template(PrintThreads) \ | |
| 46 template(FindDeadlocks) \ | |
| 47 template(ForceSafepoint) \ | |
| 48 template(ForceAsyncSafepoint) \ | |
| 49 template(Deoptimize) \ | |
| 50 template(DeoptimizeFrame) \ | |
| 51 template(DeoptimizeAll) \ | |
| 52 template(ZombieAll) \ | |
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53 template(UnlinkSymbols) \ |
| 1202 | 54 template(HandleFullCodeCache) \ |
| 0 | 55 template(Verify) \ |
| 56 template(PrintJNI) \ | |
| 57 template(HeapDumper) \ | |
| 58 template(DeoptimizeTheWorld) \ | |
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59 template(CollectForMetadataAllocation) \ |
| 0 | 60 template(GC_HeapInspection) \ |
| 61 template(GenCollectFull) \ | |
| 62 template(GenCollectFullConcurrent) \ | |
| 63 template(GenCollectForAllocation) \ | |
| 64 template(ParallelGCFailedAllocation) \ | |
| 65 template(ParallelGCSystemGC) \ | |
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66 template(CGC_Operation) \ |
| 0 | 67 template(CMS_Initial_Mark) \ |
| 68 template(CMS_Final_Remark) \ | |
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69 template(G1CollectFull) \ |
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70 template(G1CollectForAllocation) \ |
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71 template(G1IncCollectionPause) \ |
| 0 | 72 template(EnableBiasedLocking) \ |
| 73 template(RevokeBias) \ | |
| 74 template(BulkRevokeBias) \ | |
| 75 template(PopulateDumpSharedSpace) \ | |
| 76 template(JNIFunctionTableCopier) \ | |
| 77 template(RedefineClasses) \ | |
| 78 template(GetOwnedMonitorInfo) \ | |
| 79 template(GetObjectMonitorUsage) \ | |
| 80 template(GetCurrentContendedMonitor) \ | |
| 81 template(GetStackTrace) \ | |
| 82 template(GetMultipleStackTraces) \ | |
| 83 template(GetAllStackTraces) \ | |
| 84 template(GetThreadListStackTraces) \ | |
| 85 template(GetFrameCount) \ | |
| 86 template(GetFrameLocation) \ | |
| 87 template(ChangeBreakpoints) \ | |
| 88 template(GetOrSetLocal) \ | |
| 89 template(GetCurrentLocation) \ | |
| 90 template(EnterInterpOnlyMode) \ | |
| 91 template(ChangeSingleStep) \ | |
| 92 template(HeapWalkOperation) \ | |
| 93 template(HeapIterateOperation) \ | |
| 94 template(ReportJavaOutOfMemory) \ | |
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95 template(JFRCheckpoint) \ |
| 0 | 96 template(Exit) \ |
| 97 | |
| 6197 | 98 class VM_Operation: public CHeapObj<mtInternal> { |
| 0 | 99 public: |
| 100 enum Mode { | |
| 101 _safepoint, // blocking, safepoint, vm_op C-heap allocated | |
| 102 _no_safepoint, // blocking, no safepoint, vm_op C-Heap allocated | |
| 103 _concurrent, // non-blocking, no safepoint, vm_op C-Heap allocated | |
| 104 _async_safepoint // non-blocking, safepoint, vm_op C-Heap allocated | |
| 105 }; | |
| 106 | |
| 107 enum VMOp_Type { | |
| 108 VM_OPS_DO(VM_OP_ENUM) | |
| 109 VMOp_Terminating | |
| 110 }; | |
| 111 | |
| 112 private: | |
| 113 Thread* _calling_thread; | |
| 114 ThreadPriority _priority; | |
| 115 long _timestamp; | |
| 116 VM_Operation* _next; | |
| 117 VM_Operation* _prev; | |
| 118 | |
| 119 // The VM operation name array | |
| 120 static const char* _names[]; | |
| 121 | |
| 122 public: | |
| 123 VM_Operation() { _calling_thread = NULL; _next = NULL; _prev = NULL; } | |
| 124 virtual ~VM_Operation() {} | |
| 125 | |
| 126 // VM operation support (used by VM thread) | |
| 127 Thread* calling_thread() const { return _calling_thread; } | |
| 128 ThreadPriority priority() { return _priority; } | |
| 129 void set_calling_thread(Thread* thread, ThreadPriority priority); | |
| 130 | |
| 131 long timestamp() const { return _timestamp; } | |
| 132 void set_timestamp(long timestamp) { _timestamp = timestamp; } | |
| 133 | |
| 134 // Called by VM thread - does in turn invoke doit(). Do not override this | |
| 135 void evaluate(); | |
| 136 | |
| 137 // evaluate() is called by the VMThread and in turn calls doit(). | |
| 138 // If the thread invoking VMThread::execute((VM_Operation*) is a JavaThread, | |
| 139 // doit_prologue() is called in that thread before transferring control to | |
| 140 // the VMThread. | |
| 141 // If doit_prologue() returns true the VM operation will proceed, and | |
| 142 // doit_epilogue() will be called by the JavaThread once the VM operation | |
| 143 // completes. If doit_prologue() returns false the VM operation is cancelled. | |
| 144 virtual void doit() = 0; | |
| 145 virtual bool doit_prologue() { return true; }; | |
| 146 virtual void doit_epilogue() {}; // Note: Not called if mode is: _concurrent | |
| 147 | |
| 148 // Type test | |
| 149 virtual bool is_methodCompiler() const { return false; } | |
| 150 | |
| 151 // Linking | |
| 152 VM_Operation *next() const { return _next; } | |
| 153 VM_Operation *prev() const { return _prev; } | |
| 154 void set_next(VM_Operation *next) { _next = next; } | |
| 155 void set_prev(VM_Operation *prev) { _prev = prev; } | |
| 156 | |
| 157 // Configuration. Override these appropriatly in subclasses. | |
| 158 virtual VMOp_Type type() const = 0; | |
| 159 virtual Mode evaluation_mode() const { return _safepoint; } | |
| 160 virtual bool allow_nested_vm_operations() const { return false; } | |
| 161 virtual bool is_cheap_allocated() const { return false; } | |
| 162 virtual void oops_do(OopClosure* f) { /* do nothing */ }; | |
| 163 | |
| 164 // CAUTION: <don't hang yourself with following rope> | |
| 165 // If you override these methods, make sure that the evaluation | |
| 166 // of these methods is race-free and non-blocking, since these | |
| 167 // methods may be evaluated either by the mutators or by the | |
| 168 // vm thread, either concurrently with mutators or with the mutators | |
| 169 // stopped. In other words, taking locks is verboten, and if there | |
| 170 // are any races in evaluating the conditions, they'd better be benign. | |
| 171 virtual bool evaluate_at_safepoint() const { | |
| 172 return evaluation_mode() == _safepoint || | |
| 173 evaluation_mode() == _async_safepoint; | |
| 174 } | |
| 175 virtual bool evaluate_concurrently() const { | |
| 176 return evaluation_mode() == _concurrent || | |
| 177 evaluation_mode() == _async_safepoint; | |
| 178 } | |
| 179 | |
| 180 // Debugging | |
| 181 void print_on_error(outputStream* st) const; | |
| 182 const char* name() const { return _names[type()]; } | |
| 183 static const char* name(int type) { | |
| 184 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
| 185 return _names[type]; | |
| 186 } | |
| 187 #ifndef PRODUCT | |
| 188 void print_on(outputStream* st) const { print_on_error(st); } | |
| 189 #endif | |
| 190 }; | |
| 191 | |
| 192 class VM_ThreadStop: public VM_Operation { | |
| 193 private: | |
| 194 oop _thread; // The Thread that the Throwable is thrown against | |
| 195 oop _throwable; // The Throwable thrown at the target Thread | |
| 196 public: | |
| 197 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
| 198 // VM operation is executed. | |
| 199 VM_ThreadStop(oop thread, oop throwable) { | |
| 200 _thread = thread; | |
| 201 _throwable = throwable; | |
| 202 } | |
| 203 VMOp_Type type() const { return VMOp_ThreadStop; } | |
| 204 oop target_thread() const { return _thread; } | |
| 205 oop throwable() const { return _throwable;} | |
| 206 void doit(); | |
| 207 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
| 208 bool allow_nested_vm_operations() const { return true; } | |
| 209 Mode evaluation_mode() const { return _async_safepoint; } | |
| 210 bool is_cheap_allocated() const { return true; } | |
| 211 | |
| 212 // GC support | |
| 213 void oops_do(OopClosure* f) { | |
| 214 f->do_oop(&_thread); f->do_oop(&_throwable); | |
| 215 } | |
| 216 }; | |
| 217 | |
| 218 // dummy vm op, evaluated just to force a safepoint | |
| 219 class VM_ForceSafepoint: public VM_Operation { | |
| 220 public: | |
| 221 VM_ForceSafepoint() {} | |
| 222 void doit() {} | |
| 223 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
| 224 }; | |
| 225 | |
| 226 // dummy vm op, evaluated just to force a safepoint | |
| 227 class VM_ForceAsyncSafepoint: public VM_Operation { | |
| 228 public: | |
| 229 VM_ForceAsyncSafepoint() {} | |
| 230 void doit() {} | |
| 231 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
| 232 Mode evaluation_mode() const { return _async_safepoint; } | |
| 233 bool is_cheap_allocated() const { return true; } | |
| 234 }; | |
| 235 | |
| 236 class VM_Deoptimize: public VM_Operation { | |
| 237 public: | |
| 238 VM_Deoptimize() {} | |
| 239 VMOp_Type type() const { return VMOp_Deoptimize; } | |
| 240 void doit(); | |
| 241 bool allow_nested_vm_operations() const { return true; } | |
| 242 }; | |
| 243 | |
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244 |
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245 // Deopt helper that can deoptimize frames in threads other than the |
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246 // current thread. Only used through Deoptimization::deoptimize_frame. |
| 0 | 247 class VM_DeoptimizeFrame: public VM_Operation { |
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248 friend class Deoptimization; |
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249 |
| 0 | 250 private: |
| 251 JavaThread* _thread; | |
| 252 intptr_t* _id; | |
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253 int _reason; |
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254 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id, int reason); |
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255 |
| 0 | 256 public: |
| 257 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
| 258 void doit(); | |
| 259 bool allow_nested_vm_operations() const { return true; } | |
| 260 }; | |
| 261 | |
| 1202 | 262 class VM_HandleFullCodeCache: public VM_Operation { |
| 263 private: | |
| 264 bool _is_full; | |
| 265 public: | |
| 266 VM_HandleFullCodeCache(bool is_full) { _is_full = is_full; } | |
| 267 VMOp_Type type() const { return VMOp_HandleFullCodeCache; } | |
| 268 void doit(); | |
| 269 bool allow_nested_vm_operations() const { return true; } | |
| 270 }; | |
| 271 | |
| 0 | 272 #ifndef PRODUCT |
| 273 class VM_DeoptimizeAll: public VM_Operation { | |
| 274 private: | |
| 275 KlassHandle _dependee; | |
| 276 public: | |
| 277 VM_DeoptimizeAll() {} | |
| 278 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
| 279 void doit(); | |
| 280 bool allow_nested_vm_operations() const { return true; } | |
| 281 }; | |
| 282 | |
| 283 | |
| 284 class VM_ZombieAll: public VM_Operation { | |
| 285 public: | |
| 286 VM_ZombieAll() {} | |
| 287 VMOp_Type type() const { return VMOp_ZombieAll; } | |
| 288 void doit(); | |
| 289 bool allow_nested_vm_operations() const { return true; } | |
| 290 }; | |
| 291 #endif // PRODUCT | |
| 292 | |
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293 class VM_UnlinkSymbols: public VM_Operation { |
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294 public: |
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295 VM_UnlinkSymbols() {} |
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296 VMOp_Type type() const { return VMOp_UnlinkSymbols; } |
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297 void doit(); |
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298 bool allow_nested_vm_operations() const { return true; } |
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299 }; |
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300 |
| 0 | 301 class VM_Verify: public VM_Operation { |
| 302 private: | |
| 303 KlassHandle _dependee; | |
| 304 public: | |
| 305 VM_Verify() {} | |
| 306 VMOp_Type type() const { return VMOp_Verify; } | |
| 307 void doit(); | |
| 308 }; | |
| 309 | |
| 310 | |
| 311 class VM_PrintThreads: public VM_Operation { | |
| 312 private: | |
| 313 outputStream* _out; | |
| 314 bool _print_concurrent_locks; | |
| 315 public: | |
| 316 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
| 317 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
| 318 VMOp_Type type() const { return VMOp_PrintThreads; } | |
| 319 void doit(); | |
| 320 bool doit_prologue(); | |
| 321 void doit_epilogue(); | |
| 322 }; | |
| 323 | |
| 324 class VM_PrintJNI: public VM_Operation { | |
| 325 private: | |
| 326 outputStream* _out; | |
| 327 public: | |
| 328 VM_PrintJNI() { _out = tty; } | |
| 329 VM_PrintJNI(outputStream* out) { _out = out; } | |
| 330 VMOp_Type type() const { return VMOp_PrintJNI; } | |
| 331 void doit(); | |
| 332 }; | |
| 333 | |
| 334 class DeadlockCycle; | |
| 335 class VM_FindDeadlocks: public VM_Operation { | |
| 336 private: | |
| 337 bool _concurrent_locks; | |
| 338 DeadlockCycle* _deadlocks; | |
| 339 outputStream* _out; | |
| 340 | |
| 341 public: | |
| 342 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
| 343 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
| 344 ~VM_FindDeadlocks(); | |
| 345 | |
| 346 DeadlockCycle* result() { return _deadlocks; }; | |
| 347 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
| 348 void doit(); | |
| 349 bool doit_prologue(); | |
| 350 }; | |
| 351 | |
| 352 class ThreadDumpResult; | |
| 353 class ThreadSnapshot; | |
| 354 class ThreadConcurrentLocks; | |
| 355 | |
| 356 class VM_ThreadDump : public VM_Operation { | |
| 357 private: | |
| 358 ThreadDumpResult* _result; | |
| 359 int _num_threads; | |
| 360 GrowableArray<instanceHandle>* _threads; | |
| 361 int _max_depth; | |
| 362 bool _with_locked_monitors; | |
| 363 bool _with_locked_synchronizers; | |
| 364 | |
| 365 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
| 366 | |
| 367 public: | |
| 368 VM_ThreadDump(ThreadDumpResult* result, | |
| 369 int max_depth, // -1 indicates entire stack | |
| 370 bool with_locked_monitors, | |
| 371 bool with_locked_synchronizers); | |
| 372 | |
| 373 VM_ThreadDump(ThreadDumpResult* result, | |
| 374 GrowableArray<instanceHandle>* threads, | |
| 375 int num_threads, // -1 indicates entire stack | |
| 376 int max_depth, | |
| 377 bool with_locked_monitors, | |
| 378 bool with_locked_synchronizers); | |
| 379 | |
| 380 VMOp_Type type() const { return VMOp_ThreadDump; } | |
| 381 void doit(); | |
| 382 bool doit_prologue(); | |
| 383 void doit_epilogue(); | |
| 384 }; | |
| 385 | |
| 386 | |
| 387 class VM_Exit: public VM_Operation { | |
| 388 private: | |
| 389 int _exit_code; | |
| 390 static volatile bool _vm_exited; | |
| 391 static Thread * _shutdown_thread; | |
| 392 static void wait_if_vm_exited(); | |
| 393 public: | |
| 394 VM_Exit(int exit_code) { | |
| 395 _exit_code = exit_code; | |
| 396 } | |
| 397 static int wait_for_threads_in_native_to_block(); | |
| 398 static int set_vm_exited(); | |
| 399 static bool vm_exited() { return _vm_exited; } | |
| 400 static void block_if_vm_exited() { | |
| 401 if (_vm_exited) { | |
| 402 wait_if_vm_exited(); | |
| 403 } | |
| 404 } | |
| 405 VMOp_Type type() const { return VMOp_Exit; } | |
| 406 void doit(); | |
| 407 }; | |
| 1972 | 408 |
| 409 #endif // SHARE_VM_RUNTIME_VM_OPERATIONS_HPP |