Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_operations.cpp @ 12144:d8e99408faad
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
Summary: don't re-evaluate stack bounds for main thread before install guard page
Reviewed-by: coleenp, dholmes, dlong
| author | dsamersoff |
|---|---|
| date | Thu, 29 Aug 2013 21:48:23 +0400 |
| parents | f2110083203d |
| children | 836a62f43af9 510fbd28919c |
| 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1202
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1202
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1202
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
26 #include "classfile/symbolTable.hpp" |
| 1972 | 27 #include "classfile/vmSymbols.hpp" |
| 28 #include "compiler/compileBroker.hpp" | |
| 29 #include "compiler/compilerOracle.hpp" | |
| 30 #include "gc_implementation/shared/isGCActiveMark.hpp" | |
| 31 #include "memory/resourceArea.hpp" | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
32 #include "oops/symbol.hpp" |
| 1972 | 33 #include "runtime/arguments.hpp" |
| 34 #include "runtime/deoptimization.hpp" | |
| 35 #include "runtime/interfaceSupport.hpp" | |
| 36 #include "runtime/sweeper.hpp" | |
|
7180
f34d701e952e
8003935: Simplify the needed includes for using Thread::current()
stefank
parents:
3960
diff
changeset
|
37 #include "runtime/thread.inline.hpp" |
| 1972 | 38 #include "runtime/vm_operations.hpp" |
| 39 #include "services/threadService.hpp" | |
| 10405 | 40 #include "trace/tracing.hpp" |
| 0 | 41 |
| 42 #define VM_OP_NAME_INITIALIZE(name) #name, | |
| 43 | |
| 44 const char* VM_Operation::_names[VM_Operation::VMOp_Terminating] = \ | |
| 45 { VM_OPS_DO(VM_OP_NAME_INITIALIZE) }; | |
| 46 | |
| 47 void VM_Operation::set_calling_thread(Thread* thread, ThreadPriority priority) { | |
| 48 _calling_thread = thread; | |
| 49 assert(MinPriority <= priority && priority <= MaxPriority, "sanity check"); | |
| 50 _priority = priority; | |
| 51 } | |
| 52 | |
| 53 | |
| 54 void VM_Operation::evaluate() { | |
| 55 ResourceMark rm; | |
| 56 if (TraceVMOperation) { | |
| 57 tty->print("["); | |
| 58 NOT_PRODUCT(print();) | |
| 59 } | |
| 60 doit(); | |
| 61 if (TraceVMOperation) { | |
| 62 tty->print_cr("]"); | |
| 63 } | |
| 64 } | |
| 65 | |
| 10405 | 66 const char* VM_Operation::mode_to_string(Mode mode) { |
| 67 switch(mode) { | |
| 68 case _safepoint : return "safepoint"; | |
| 69 case _no_safepoint : return "no safepoint"; | |
| 70 case _concurrent : return "concurrent"; | |
| 71 case _async_safepoint: return "async safepoint"; | |
| 72 default : return "unknown"; | |
| 73 } | |
| 74 } | |
| 0 | 75 // Called by fatal error handler. |
| 76 void VM_Operation::print_on_error(outputStream* st) const { | |
| 77 st->print("VM_Operation (" PTR_FORMAT "): ", this); | |
| 78 st->print("%s", name()); | |
| 79 | |
| 10405 | 80 const char* mode = mode_to_string(evaluation_mode()); |
| 0 | 81 st->print(", mode: %s", mode); |
| 82 | |
| 83 if (calling_thread()) { | |
| 84 st->print(", requested by thread " PTR_FORMAT, calling_thread()); | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 void VM_ThreadStop::doit() { | |
| 89 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); | |
| 90 JavaThread* target = java_lang_Thread::thread(target_thread()); | |
| 91 // Note that this now allows multiple ThreadDeath exceptions to be | |
| 92 // thrown at a thread. | |
| 93 if (target != NULL) { | |
| 94 // the thread has run and is not already in the process of exiting | |
| 95 target->send_thread_stop(throwable()); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 void VM_Deoptimize::doit() { | |
| 100 // We do not want any GCs to happen while we are in the middle of this VM operation | |
| 101 ResourceMark rm; | |
| 102 DeoptimizationMarker dm; | |
| 103 | |
| 104 // Deoptimize all activations depending on marked nmethods | |
| 105 Deoptimization::deoptimize_dependents(); | |
| 106 | |
| 107 // Make the dependent methods zombies | |
| 108 CodeCache::make_marked_nmethods_zombies(); | |
| 109 } | |
| 110 | |
| 111 | |
| 112 VM_DeoptimizeFrame::VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id) { | |
| 113 _thread = thread; | |
| 114 _id = id; | |
| 115 } | |
| 116 | |
| 117 | |
| 118 void VM_DeoptimizeFrame::doit() { | |
|
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
119 Deoptimization::deoptimize_frame_internal(_thread, _id); |
| 0 | 120 } |
| 121 | |
| 122 | |
| 123 #ifndef PRODUCT | |
| 124 | |
| 125 void VM_DeoptimizeAll::doit() { | |
| 126 DeoptimizationMarker dm; | |
| 127 // deoptimize all java threads in the system | |
| 128 if (DeoptimizeALot) { | |
| 129 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
| 130 if (thread->has_last_Java_frame()) { | |
| 131 thread->deoptimize(); | |
| 132 } | |
| 133 } | |
| 134 } else if (DeoptimizeRandom) { | |
| 135 | |
| 136 // Deoptimize some selected threads and frames | |
| 137 int tnum = os::random() & 0x3; | |
| 138 int fnum = os::random() & 0x3; | |
| 139 int tcount = 0; | |
| 140 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
| 141 if (thread->has_last_Java_frame()) { | |
| 142 if (tcount++ == tnum) { | |
| 143 tcount = 0; | |
| 144 int fcount = 0; | |
| 145 // Deoptimize some selected frames. | |
| 146 // Biased llocking wants a updated register map | |
| 147 for(StackFrameStream fst(thread, UseBiasedLocking); !fst.is_done(); fst.next()) { | |
| 148 if (fst.current()->can_be_deoptimized()) { | |
| 149 if (fcount++ == fnum) { | |
| 150 fcount = 0; | |
| 151 Deoptimization::deoptimize(thread, *fst.current(), fst.register_map()); | |
| 152 } | |
| 153 } | |
| 154 } | |
| 155 } | |
| 156 } | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 | |
| 162 void VM_ZombieAll::doit() { | |
| 163 JavaThread *thread = (JavaThread *)calling_thread(); | |
| 164 assert(thread->is_Java_thread(), "must be a Java thread"); | |
| 165 thread->make_zombies(); | |
| 166 } | |
| 167 | |
| 168 #endif // !PRODUCT | |
| 169 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
170 void VM_UnlinkSymbols::doit() { |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
171 JavaThread *thread = (JavaThread *)calling_thread(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
172 assert(thread->is_Java_thread(), "must be a Java thread"); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
173 SymbolTable::unlink(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
174 } |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
175 |
| 1202 | 176 void VM_HandleFullCodeCache::doit() { |
| 177 NMethodSweeper::speculative_disconnect_nmethods(_is_full); | |
| 178 } | |
| 179 | |
| 0 | 180 void VM_Verify::doit() { |
|
9071
68fe50d4f1d5
8011343: Add new flag for verifying the heap during startup
johnc
parents:
7180
diff
changeset
|
181 Universe::heap()->prepare_for_verify(); |
|
68fe50d4f1d5
8011343: Add new flag for verifying the heap during startup
johnc
parents:
7180
diff
changeset
|
182 Universe::verify(_silent); |
| 0 | 183 } |
| 184 | |
| 185 bool VM_PrintThreads::doit_prologue() { | |
| 186 assert(Thread::current()->is_Java_thread(), "just checking"); | |
| 187 | |
| 188 // Make sure AbstractOwnableSynchronizer is loaded | |
| 189 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 190 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); | |
| 191 } | |
| 192 | |
| 193 // Get Heap_lock if concurrent locks will be dumped | |
| 194 if (_print_concurrent_locks) { | |
| 195 Heap_lock->lock(); | |
| 196 } | |
| 197 return true; | |
| 198 } | |
| 199 | |
| 200 void VM_PrintThreads::doit() { | |
| 201 Threads::print_on(_out, true, false, _print_concurrent_locks); | |
| 202 } | |
| 203 | |
| 204 void VM_PrintThreads::doit_epilogue() { | |
| 205 if (_print_concurrent_locks) { | |
| 206 // Release Heap_lock | |
| 207 Heap_lock->unlock(); | |
| 208 } | |
| 209 } | |
| 210 | |
| 211 void VM_PrintJNI::doit() { | |
| 212 JNIHandles::print_on(_out); | |
| 213 } | |
| 214 | |
| 215 VM_FindDeadlocks::~VM_FindDeadlocks() { | |
| 216 if (_deadlocks != NULL) { | |
| 217 DeadlockCycle* cycle = _deadlocks; | |
| 218 while (cycle != NULL) { | |
| 219 DeadlockCycle* d = cycle; | |
| 220 cycle = cycle->next(); | |
| 221 delete d; | |
| 222 } | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 bool VM_FindDeadlocks::doit_prologue() { | |
| 227 assert(Thread::current()->is_Java_thread(), "just checking"); | |
| 228 | |
| 229 // Load AbstractOwnableSynchronizer class | |
| 230 if (_concurrent_locks && JDK_Version::is_gte_jdk16x_version()) { | |
| 231 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); | |
| 232 } | |
| 233 | |
| 234 return true; | |
| 235 } | |
| 236 | |
| 237 void VM_FindDeadlocks::doit() { | |
| 238 _deadlocks = ThreadService::find_deadlocks_at_safepoint(_concurrent_locks); | |
| 239 if (_out != NULL) { | |
| 240 int num_deadlocks = 0; | |
| 241 for (DeadlockCycle* cycle = _deadlocks; cycle != NULL; cycle = cycle->next()) { | |
| 242 num_deadlocks++; | |
| 243 cycle->print_on(_out); | |
| 244 } | |
| 245 | |
| 246 if (num_deadlocks == 1) { | |
| 247 _out->print_cr("\nFound 1 deadlock.\n"); | |
| 248 _out->flush(); | |
| 249 } else if (num_deadlocks > 1) { | |
| 250 _out->print_cr("\nFound %d deadlocks.\n", num_deadlocks); | |
| 251 _out->flush(); | |
| 252 } | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 VM_ThreadDump::VM_ThreadDump(ThreadDumpResult* result, | |
| 257 int max_depth, | |
| 258 bool with_locked_monitors, | |
| 259 bool with_locked_synchronizers) { | |
| 260 _result = result; | |
| 261 _num_threads = 0; // 0 indicates all threads | |
| 262 _threads = NULL; | |
| 263 _result = result; | |
| 264 _max_depth = max_depth; | |
| 265 _with_locked_monitors = with_locked_monitors; | |
| 266 _with_locked_synchronizers = with_locked_synchronizers; | |
| 267 } | |
| 268 | |
| 269 VM_ThreadDump::VM_ThreadDump(ThreadDumpResult* result, | |
| 270 GrowableArray<instanceHandle>* threads, | |
| 271 int num_threads, | |
| 272 int max_depth, | |
| 273 bool with_locked_monitors, | |
| 274 bool with_locked_synchronizers) { | |
| 275 _result = result; | |
| 276 _num_threads = num_threads; | |
| 277 _threads = threads; | |
| 278 _result = result; | |
| 279 _max_depth = max_depth; | |
| 280 _with_locked_monitors = with_locked_monitors; | |
| 281 _with_locked_synchronizers = with_locked_synchronizers; | |
| 282 } | |
| 283 | |
| 284 bool VM_ThreadDump::doit_prologue() { | |
| 285 assert(Thread::current()->is_Java_thread(), "just checking"); | |
| 286 | |
| 287 // Load AbstractOwnableSynchronizer class before taking thread snapshots | |
| 288 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 289 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); | |
| 290 } | |
| 291 | |
| 292 if (_with_locked_synchronizers) { | |
| 293 // Acquire Heap_lock to dump concurrent locks | |
| 294 Heap_lock->lock(); | |
| 295 } | |
| 296 | |
| 297 return true; | |
| 298 } | |
| 299 | |
| 300 void VM_ThreadDump::doit_epilogue() { | |
| 301 if (_with_locked_synchronizers) { | |
| 302 // Release Heap_lock | |
| 303 Heap_lock->unlock(); | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 void VM_ThreadDump::doit() { | |
| 308 ResourceMark rm; | |
| 309 | |
| 310 ConcurrentLocksDump concurrent_locks(true); | |
| 311 if (_with_locked_synchronizers) { | |
| 312 concurrent_locks.dump_at_safepoint(); | |
| 313 } | |
| 314 | |
| 315 if (_num_threads == 0) { | |
| 316 // Snapshot all live threads | |
| 317 for (JavaThread* jt = Threads::first(); jt != NULL; jt = jt->next()) { | |
| 318 if (jt->is_exiting() || | |
| 319 jt->is_hidden_from_external_view()) { | |
| 320 // skip terminating threads and hidden threads | |
| 321 continue; | |
| 322 } | |
| 323 ThreadConcurrentLocks* tcl = NULL; | |
| 324 if (_with_locked_synchronizers) { | |
| 325 tcl = concurrent_locks.thread_concurrent_locks(jt); | |
| 326 } | |
| 327 ThreadSnapshot* ts = snapshot_thread(jt, tcl); | |
| 328 _result->add_thread_snapshot(ts); | |
| 329 } | |
| 330 } else { | |
| 331 // Snapshot threads in the given _threads array | |
| 332 // A dummy snapshot is created if a thread doesn't exist | |
| 333 for (int i = 0; i < _num_threads; i++) { | |
| 334 instanceHandle th = _threads->at(i); | |
| 335 if (th() == NULL) { | |
| 336 // skip if the thread doesn't exist | |
| 337 // Add a dummy snapshot | |
| 338 _result->add_thread_snapshot(new ThreadSnapshot()); | |
| 339 continue; | |
| 340 } | |
| 341 | |
| 342 // Dump thread stack only if the thread is alive and not exiting | |
| 343 // and not VM internal thread. | |
| 344 JavaThread* jt = java_lang_Thread::thread(th()); | |
| 345 if (jt == NULL || /* thread not alive */ | |
| 346 jt->is_exiting() || | |
| 347 jt->is_hidden_from_external_view()) { | |
| 348 // add a NULL snapshot if skipped | |
| 349 _result->add_thread_snapshot(new ThreadSnapshot()); | |
| 350 continue; | |
| 351 } | |
| 352 ThreadConcurrentLocks* tcl = NULL; | |
| 353 if (_with_locked_synchronizers) { | |
| 354 tcl = concurrent_locks.thread_concurrent_locks(jt); | |
| 355 } | |
| 356 ThreadSnapshot* ts = snapshot_thread(jt, tcl); | |
| 357 _result->add_thread_snapshot(ts); | |
| 358 } | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 ThreadSnapshot* VM_ThreadDump::snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl) { | |
| 363 ThreadSnapshot* snapshot = new ThreadSnapshot(java_thread); | |
| 364 snapshot->dump_stack_at_safepoint(_max_depth, _with_locked_monitors); | |
| 365 snapshot->set_concurrent_locks(tcl); | |
| 366 return snapshot; | |
| 367 } | |
| 368 | |
| 369 volatile bool VM_Exit::_vm_exited = false; | |
| 370 Thread * VM_Exit::_shutdown_thread = NULL; | |
| 371 | |
| 372 int VM_Exit::set_vm_exited() { | |
| 373 Thread * thr_cur = ThreadLocalStorage::get_thread_slow(); | |
| 374 | |
| 375 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint already"); | |
| 376 | |
| 377 int num_active = 0; | |
| 378 | |
| 379 _shutdown_thread = thr_cur; | |
| 380 _vm_exited = true; // global flag | |
| 381 for(JavaThread *thr = Threads::first(); thr != NULL; thr = thr->next()) | |
| 382 if (thr!=thr_cur && thr->thread_state() == _thread_in_native) { | |
| 383 ++num_active; | |
| 384 thr->set_terminated(JavaThread::_vm_exited); // per-thread flag | |
| 385 } | |
| 386 | |
| 387 return num_active; | |
| 388 } | |
| 389 | |
| 390 int VM_Exit::wait_for_threads_in_native_to_block() { | |
| 391 // VM exits at safepoint. This function must be called at the final safepoint | |
| 392 // to wait for threads in _thread_in_native state to be quiescent. | |
| 393 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint already"); | |
| 394 | |
| 395 Thread * thr_cur = ThreadLocalStorage::get_thread_slow(); | |
| 396 Monitor timer(Mutex::leaf, "VM_Exit timer", true); | |
| 397 | |
| 398 // Compiler threads need longer wait because they can access VM data directly | |
| 399 // while in native. If they are active and some structures being used are | |
| 400 // deleted by the shutdown sequence, they will crash. On the other hand, user | |
| 401 // threads must go through native=>Java/VM transitions first to access VM | |
| 402 // data, and they will be stopped during state transition. In theory, we | |
| 403 // don't have to wait for user threads to be quiescent, but it's always | |
| 404 // better to terminate VM when current thread is the only active thread, so | |
| 405 // wait for user threads too. Numbers are in 10 milliseconds. | |
| 406 int max_wait_user_thread = 30; // at least 300 milliseconds | |
| 407 int max_wait_compiler_thread = 1000; // at least 10 seconds | |
| 408 | |
| 409 int max_wait = max_wait_compiler_thread; | |
| 410 | |
| 411 int attempts = 0; | |
| 412 while (true) { | |
| 413 int num_active = 0; | |
| 414 int num_active_compiler_thread = 0; | |
| 415 | |
| 416 for(JavaThread *thr = Threads::first(); thr != NULL; thr = thr->next()) { | |
| 417 if (thr!=thr_cur && thr->thread_state() == _thread_in_native) { | |
| 418 num_active++; | |
| 419 if (thr->is_Compiler_thread()) { | |
| 420 num_active_compiler_thread++; | |
| 421 } | |
| 422 } | |
| 423 } | |
| 424 | |
| 425 if (num_active == 0) { | |
| 426 return 0; | |
| 427 } else if (attempts > max_wait) { | |
| 428 return num_active; | |
| 429 } else if (num_active_compiler_thread == 0 && attempts > max_wait_user_thread) { | |
| 430 return num_active; | |
| 431 } | |
| 432 | |
| 433 attempts++; | |
| 434 | |
| 435 MutexLockerEx ml(&timer, Mutex::_no_safepoint_check_flag); | |
| 436 timer.wait(Mutex::_no_safepoint_check_flag, 10); | |
| 437 } | |
| 438 } | |
| 439 | |
| 440 void VM_Exit::doit() { | |
| 441 CompileBroker::set_should_block(); | |
| 442 | |
| 443 // Wait for a short period for threads in native to block. Any thread | |
| 444 // still executing native code after the wait will be stopped at | |
| 445 // native==>Java/VM barriers. | |
| 446 // Among 16276 JCK tests, 94% of them come here without any threads still | |
| 447 // running in native; the other 6% are quiescent within 250ms (Ultra 80). | |
| 448 wait_for_threads_in_native_to_block(); | |
| 449 | |
| 450 set_vm_exited(); | |
| 451 | |
| 452 // cleanup globals resources before exiting. exit_globals() currently | |
| 453 // cleans up outputStream resources and PerfMemory resources. | |
| 454 exit_globals(); | |
| 455 | |
| 456 // Check for exit hook | |
| 457 exit_hook_t exit_hook = Arguments::exit_hook(); | |
| 458 if (exit_hook != NULL) { | |
| 459 // exit hook should exit. | |
| 460 exit_hook(_exit_code); | |
| 461 // ... but if it didn't, we must do it here | |
| 462 vm_direct_exit(_exit_code); | |
| 463 } else { | |
| 464 vm_direct_exit(_exit_code); | |
| 465 } | |
| 466 } | |
| 467 | |
| 468 | |
| 469 void VM_Exit::wait_if_vm_exited() { | |
| 470 if (_vm_exited && | |
| 471 ThreadLocalStorage::get_thread_slow() != _shutdown_thread) { | |
| 472 // _vm_exited is set at safepoint, and the Threads_lock is never released | |
| 473 // we will block here until the process dies | |
| 474 Threads_lock->lock_without_safepoint_check(); | |
| 475 ShouldNotReachHere(); | |
| 476 } | |
| 477 } |