Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_operations.hpp @ 13212:eb03a7335eb0
Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
| author | Christian Wimmer <christian.wimmer@oracle.com> |
|---|---|
| date | Mon, 02 Dec 2013 14:20:32 -0800 |
| parents | cefad50507d8 |
| children | d8041d695d19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 1997, 2013, 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) \ |
| 0 | 54 template(Verify) \ |
| 55 template(PrintJNI) \ | |
| 56 template(HeapDumper) \ | |
| 57 template(DeoptimizeTheWorld) \ | |
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58 template(CollectForMetadataAllocation) \ |
| 0 | 59 template(GC_HeapInspection) \ |
| 60 template(GenCollectFull) \ | |
| 61 template(GenCollectFullConcurrent) \ | |
| 62 template(GenCollectForAllocation) \ | |
| 63 template(ParallelGCFailedAllocation) \ | |
| 64 template(ParallelGCSystemGC) \ | |
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65 template(CGC_Operation) \ |
| 0 | 66 template(CMS_Initial_Mark) \ |
| 67 template(CMS_Final_Remark) \ | |
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68 template(G1CollectFull) \ |
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69 template(G1CollectForAllocation) \ |
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70 template(G1IncCollectionPause) \ |
| 0 | 71 template(EnableBiasedLocking) \ |
| 72 template(RevokeBias) \ | |
| 73 template(BulkRevokeBias) \ | |
| 74 template(PopulateDumpSharedSpace) \ | |
| 75 template(JNIFunctionTableCopier) \ | |
| 76 template(RedefineClasses) \ | |
| 77 template(GetOwnedMonitorInfo) \ | |
| 78 template(GetObjectMonitorUsage) \ | |
| 79 template(GetCurrentContendedMonitor) \ | |
| 80 template(GetStackTrace) \ | |
| 81 template(GetMultipleStackTraces) \ | |
| 82 template(GetAllStackTraces) \ | |
| 83 template(GetThreadListStackTraces) \ | |
| 84 template(GetFrameCount) \ | |
| 85 template(GetFrameLocation) \ | |
| 86 template(ChangeBreakpoints) \ | |
| 87 template(GetOrSetLocal) \ | |
| 88 template(GetCurrentLocation) \ | |
| 89 template(EnterInterpOnlyMode) \ | |
| 90 template(ChangeSingleStep) \ | |
| 91 template(HeapWalkOperation) \ | |
| 92 template(HeapIterateOperation) \ | |
| 93 template(ReportJavaOutOfMemory) \ | |
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94 template(JFRCheckpoint) \ |
| 0 | 95 template(Exit) \ |
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96 template(LinuxDllLoad) \ |
| 0 | 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 | |
| 10405 | 180 static const char* mode_to_string(Mode mode); |
| 181 | |
| 0 | 182 // Debugging |
| 183 void print_on_error(outputStream* st) const; | |
| 184 const char* name() const { return _names[type()]; } | |
| 185 static const char* name(int type) { | |
| 186 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
| 187 return _names[type]; | |
| 188 } | |
| 189 #ifndef PRODUCT | |
| 190 void print_on(outputStream* st) const { print_on_error(st); } | |
| 191 #endif | |
| 192 }; | |
| 193 | |
| 194 class VM_ThreadStop: public VM_Operation { | |
| 195 private: | |
| 196 oop _thread; // The Thread that the Throwable is thrown against | |
| 197 oop _throwable; // The Throwable thrown at the target Thread | |
| 198 public: | |
| 199 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
| 200 // VM operation is executed. | |
| 201 VM_ThreadStop(oop thread, oop throwable) { | |
| 202 _thread = thread; | |
| 203 _throwable = throwable; | |
| 204 } | |
| 205 VMOp_Type type() const { return VMOp_ThreadStop; } | |
| 206 oop target_thread() const { return _thread; } | |
| 207 oop throwable() const { return _throwable;} | |
| 208 void doit(); | |
| 209 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
| 210 bool allow_nested_vm_operations() const { return true; } | |
| 211 Mode evaluation_mode() const { return _async_safepoint; } | |
| 212 bool is_cheap_allocated() const { return true; } | |
| 213 | |
| 214 // GC support | |
| 215 void oops_do(OopClosure* f) { | |
| 216 f->do_oop(&_thread); f->do_oop(&_throwable); | |
| 217 } | |
| 218 }; | |
| 219 | |
| 220 // dummy vm op, evaluated just to force a safepoint | |
| 221 class VM_ForceSafepoint: public VM_Operation { | |
| 222 public: | |
| 223 VM_ForceSafepoint() {} | |
| 224 void doit() {} | |
| 225 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
| 226 }; | |
| 227 | |
| 228 // dummy vm op, evaluated just to force a safepoint | |
| 229 class VM_ForceAsyncSafepoint: public VM_Operation { | |
| 230 public: | |
| 231 VM_ForceAsyncSafepoint() {} | |
| 232 void doit() {} | |
| 233 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
| 234 Mode evaluation_mode() const { return _async_safepoint; } | |
| 235 bool is_cheap_allocated() const { return true; } | |
| 236 }; | |
| 237 | |
| 238 class VM_Deoptimize: public VM_Operation { | |
| 239 public: | |
| 240 VM_Deoptimize() {} | |
| 241 VMOp_Type type() const { return VMOp_Deoptimize; } | |
| 242 void doit(); | |
| 243 bool allow_nested_vm_operations() const { return true; } | |
| 244 }; | |
| 245 | |
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246 |
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247 // Deopt helper that can deoptimize frames in threads other than the |
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248 // current thread. Only used through Deoptimization::deoptimize_frame. |
| 0 | 249 class VM_DeoptimizeFrame: public VM_Operation { |
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250 friend class Deoptimization; |
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251 |
| 0 | 252 private: |
| 253 JavaThread* _thread; | |
| 254 intptr_t* _id; | |
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255 int _reason; |
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256 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id, int reason); |
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257 |
| 0 | 258 public: |
| 259 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
| 260 void doit(); | |
| 261 bool allow_nested_vm_operations() const { return true; } | |
| 262 }; | |
| 263 | |
| 264 #ifndef PRODUCT | |
| 265 class VM_DeoptimizeAll: public VM_Operation { | |
| 266 private: | |
| 267 KlassHandle _dependee; | |
| 268 public: | |
| 269 VM_DeoptimizeAll() {} | |
| 270 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
| 271 void doit(); | |
| 272 bool allow_nested_vm_operations() const { return true; } | |
| 273 }; | |
| 274 | |
| 275 | |
| 276 class VM_ZombieAll: public VM_Operation { | |
| 277 public: | |
| 278 VM_ZombieAll() {} | |
| 279 VMOp_Type type() const { return VMOp_ZombieAll; } | |
| 280 void doit(); | |
| 281 bool allow_nested_vm_operations() const { return true; } | |
| 282 }; | |
| 283 #endif // PRODUCT | |
| 284 | |
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285 class VM_UnlinkSymbols: public VM_Operation { |
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286 public: |
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287 VM_UnlinkSymbols() {} |
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288 VMOp_Type type() const { return VMOp_UnlinkSymbols; } |
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289 void doit(); |
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290 bool allow_nested_vm_operations() const { return true; } |
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291 }; |
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292 |
| 0 | 293 class VM_Verify: public VM_Operation { |
| 294 private: | |
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295 bool _silent; |
| 0 | 296 public: |
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297 VM_Verify(bool silent = VerifySilently) : _silent(silent) {} |
| 0 | 298 VMOp_Type type() const { return VMOp_Verify; } |
| 299 void doit(); | |
| 300 }; | |
| 301 | |
| 302 | |
| 303 class VM_PrintThreads: public VM_Operation { | |
| 304 private: | |
| 305 outputStream* _out; | |
| 306 bool _print_concurrent_locks; | |
| 307 public: | |
| 308 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
| 309 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
| 310 VMOp_Type type() const { return VMOp_PrintThreads; } | |
| 311 void doit(); | |
| 312 bool doit_prologue(); | |
| 313 void doit_epilogue(); | |
| 314 }; | |
| 315 | |
| 316 class VM_PrintJNI: public VM_Operation { | |
| 317 private: | |
| 318 outputStream* _out; | |
| 319 public: | |
| 320 VM_PrintJNI() { _out = tty; } | |
| 321 VM_PrintJNI(outputStream* out) { _out = out; } | |
| 322 VMOp_Type type() const { return VMOp_PrintJNI; } | |
| 323 void doit(); | |
| 324 }; | |
| 325 | |
| 326 class DeadlockCycle; | |
| 327 class VM_FindDeadlocks: public VM_Operation { | |
| 328 private: | |
| 329 bool _concurrent_locks; | |
| 330 DeadlockCycle* _deadlocks; | |
| 331 outputStream* _out; | |
| 332 | |
| 333 public: | |
| 334 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
| 335 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
| 336 ~VM_FindDeadlocks(); | |
| 337 | |
| 338 DeadlockCycle* result() { return _deadlocks; }; | |
| 339 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
| 340 void doit(); | |
| 341 bool doit_prologue(); | |
| 342 }; | |
| 343 | |
| 344 class ThreadDumpResult; | |
| 345 class ThreadSnapshot; | |
| 346 class ThreadConcurrentLocks; | |
| 347 | |
| 348 class VM_ThreadDump : public VM_Operation { | |
| 349 private: | |
| 350 ThreadDumpResult* _result; | |
| 351 int _num_threads; | |
| 352 GrowableArray<instanceHandle>* _threads; | |
| 353 int _max_depth; | |
| 354 bool _with_locked_monitors; | |
| 355 bool _with_locked_synchronizers; | |
| 356 | |
| 357 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
| 358 | |
| 359 public: | |
| 360 VM_ThreadDump(ThreadDumpResult* result, | |
| 361 int max_depth, // -1 indicates entire stack | |
| 362 bool with_locked_monitors, | |
| 363 bool with_locked_synchronizers); | |
| 364 | |
| 365 VM_ThreadDump(ThreadDumpResult* result, | |
| 366 GrowableArray<instanceHandle>* threads, | |
| 367 int num_threads, // -1 indicates entire stack | |
| 368 int max_depth, | |
| 369 bool with_locked_monitors, | |
| 370 bool with_locked_synchronizers); | |
| 371 | |
| 372 VMOp_Type type() const { return VMOp_ThreadDump; } | |
| 373 void doit(); | |
| 374 bool doit_prologue(); | |
| 375 void doit_epilogue(); | |
| 376 }; | |
| 377 | |
| 378 | |
| 379 class VM_Exit: public VM_Operation { | |
| 380 private: | |
| 381 int _exit_code; | |
| 382 static volatile bool _vm_exited; | |
| 383 static Thread * _shutdown_thread; | |
| 384 static void wait_if_vm_exited(); | |
| 385 public: | |
| 386 VM_Exit(int exit_code) { | |
| 387 _exit_code = exit_code; | |
| 388 } | |
| 389 static int wait_for_threads_in_native_to_block(); | |
| 390 static int set_vm_exited(); | |
| 391 static bool vm_exited() { return _vm_exited; } | |
| 392 static void block_if_vm_exited() { | |
| 393 if (_vm_exited) { | |
| 394 wait_if_vm_exited(); | |
| 395 } | |
| 396 } | |
| 397 VMOp_Type type() const { return VMOp_Exit; } | |
| 398 void doit(); | |
| 399 }; | |
| 1972 | 400 |
| 401 #endif // SHARE_VM_RUNTIME_VM_OPERATIONS_HPP |