Wed, 17 Sep 2008 19:59:35 +0400
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_vm_operations.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | #define VM_OP_NAME_INITIALIZE(name) #name, |
duke@435 | 29 | |
duke@435 | 30 | const char* VM_Operation::_names[VM_Operation::VMOp_Terminating] = \ |
duke@435 | 31 | { VM_OPS_DO(VM_OP_NAME_INITIALIZE) }; |
duke@435 | 32 | |
duke@435 | 33 | void VM_Operation::set_calling_thread(Thread* thread, ThreadPriority priority) { |
duke@435 | 34 | _calling_thread = thread; |
duke@435 | 35 | assert(MinPriority <= priority && priority <= MaxPriority, "sanity check"); |
duke@435 | 36 | _priority = priority; |
duke@435 | 37 | } |
duke@435 | 38 | |
duke@435 | 39 | |
duke@435 | 40 | void VM_Operation::evaluate() { |
duke@435 | 41 | ResourceMark rm; |
duke@435 | 42 | if (TraceVMOperation) { |
duke@435 | 43 | tty->print("["); |
duke@435 | 44 | NOT_PRODUCT(print();) |
duke@435 | 45 | } |
duke@435 | 46 | doit(); |
duke@435 | 47 | if (TraceVMOperation) { |
duke@435 | 48 | tty->print_cr("]"); |
duke@435 | 49 | } |
duke@435 | 50 | } |
duke@435 | 51 | |
duke@435 | 52 | // Called by fatal error handler. |
duke@435 | 53 | void VM_Operation::print_on_error(outputStream* st) const { |
duke@435 | 54 | st->print("VM_Operation (" PTR_FORMAT "): ", this); |
duke@435 | 55 | st->print("%s", name()); |
duke@435 | 56 | |
duke@435 | 57 | const char* mode; |
duke@435 | 58 | switch(evaluation_mode()) { |
duke@435 | 59 | case _safepoint : mode = "safepoint"; break; |
duke@435 | 60 | case _no_safepoint : mode = "no safepoint"; break; |
duke@435 | 61 | case _concurrent : mode = "concurrent"; break; |
duke@435 | 62 | case _async_safepoint: mode = "async safepoint"; break; |
duke@435 | 63 | default : mode = "unknown"; break; |
duke@435 | 64 | } |
duke@435 | 65 | st->print(", mode: %s", mode); |
duke@435 | 66 | |
duke@435 | 67 | if (calling_thread()) { |
duke@435 | 68 | st->print(", requested by thread " PTR_FORMAT, calling_thread()); |
duke@435 | 69 | } |
duke@435 | 70 | } |
duke@435 | 71 | |
duke@435 | 72 | void VM_ThreadStop::doit() { |
duke@435 | 73 | assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); |
duke@435 | 74 | JavaThread* target = java_lang_Thread::thread(target_thread()); |
duke@435 | 75 | // Note that this now allows multiple ThreadDeath exceptions to be |
duke@435 | 76 | // thrown at a thread. |
duke@435 | 77 | if (target != NULL) { |
duke@435 | 78 | // the thread has run and is not already in the process of exiting |
duke@435 | 79 | target->send_thread_stop(throwable()); |
duke@435 | 80 | } |
duke@435 | 81 | } |
duke@435 | 82 | |
duke@435 | 83 | void VM_Deoptimize::doit() { |
duke@435 | 84 | // We do not want any GCs to happen while we are in the middle of this VM operation |
duke@435 | 85 | ResourceMark rm; |
duke@435 | 86 | DeoptimizationMarker dm; |
duke@435 | 87 | |
duke@435 | 88 | // Deoptimize all activations depending on marked nmethods |
duke@435 | 89 | Deoptimization::deoptimize_dependents(); |
duke@435 | 90 | |
duke@435 | 91 | // Make the dependent methods zombies |
duke@435 | 92 | CodeCache::make_marked_nmethods_zombies(); |
duke@435 | 93 | } |
duke@435 | 94 | |
duke@435 | 95 | |
duke@435 | 96 | VM_DeoptimizeFrame::VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id) { |
duke@435 | 97 | _thread = thread; |
duke@435 | 98 | _id = id; |
duke@435 | 99 | } |
duke@435 | 100 | |
duke@435 | 101 | |
duke@435 | 102 | void VM_DeoptimizeFrame::doit() { |
duke@435 | 103 | Deoptimization::deoptimize_frame(_thread, _id); |
duke@435 | 104 | } |
duke@435 | 105 | |
duke@435 | 106 | |
duke@435 | 107 | #ifndef PRODUCT |
duke@435 | 108 | |
duke@435 | 109 | void VM_DeoptimizeAll::doit() { |
duke@435 | 110 | DeoptimizationMarker dm; |
duke@435 | 111 | // deoptimize all java threads in the system |
duke@435 | 112 | if (DeoptimizeALot) { |
duke@435 | 113 | for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { |
duke@435 | 114 | if (thread->has_last_Java_frame()) { |
duke@435 | 115 | thread->deoptimize(); |
duke@435 | 116 | } |
duke@435 | 117 | } |
duke@435 | 118 | } else if (DeoptimizeRandom) { |
duke@435 | 119 | |
duke@435 | 120 | // Deoptimize some selected threads and frames |
duke@435 | 121 | int tnum = os::random() & 0x3; |
duke@435 | 122 | int fnum = os::random() & 0x3; |
duke@435 | 123 | int tcount = 0; |
duke@435 | 124 | for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { |
duke@435 | 125 | if (thread->has_last_Java_frame()) { |
duke@435 | 126 | if (tcount++ == tnum) { |
duke@435 | 127 | tcount = 0; |
duke@435 | 128 | int fcount = 0; |
duke@435 | 129 | // Deoptimize some selected frames. |
duke@435 | 130 | // Biased llocking wants a updated register map |
duke@435 | 131 | for(StackFrameStream fst(thread, UseBiasedLocking); !fst.is_done(); fst.next()) { |
duke@435 | 132 | if (fst.current()->can_be_deoptimized()) { |
duke@435 | 133 | if (fcount++ == fnum) { |
duke@435 | 134 | fcount = 0; |
duke@435 | 135 | Deoptimization::deoptimize(thread, *fst.current(), fst.register_map()); |
duke@435 | 136 | } |
duke@435 | 137 | } |
duke@435 | 138 | } |
duke@435 | 139 | } |
duke@435 | 140 | } |
duke@435 | 141 | } |
duke@435 | 142 | } |
duke@435 | 143 | } |
duke@435 | 144 | |
duke@435 | 145 | |
duke@435 | 146 | void VM_ZombieAll::doit() { |
duke@435 | 147 | JavaThread *thread = (JavaThread *)calling_thread(); |
duke@435 | 148 | assert(thread->is_Java_thread(), "must be a Java thread"); |
duke@435 | 149 | thread->make_zombies(); |
duke@435 | 150 | } |
duke@435 | 151 | |
duke@435 | 152 | #endif // !PRODUCT |
duke@435 | 153 | |
duke@435 | 154 | void VM_Verify::doit() { |
duke@435 | 155 | Universe::verify(); |
duke@435 | 156 | } |
duke@435 | 157 | |
duke@435 | 158 | bool VM_PrintThreads::doit_prologue() { |
duke@435 | 159 | assert(Thread::current()->is_Java_thread(), "just checking"); |
duke@435 | 160 | |
duke@435 | 161 | // Make sure AbstractOwnableSynchronizer is loaded |
duke@435 | 162 | if (JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 163 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); |
duke@435 | 164 | } |
duke@435 | 165 | |
duke@435 | 166 | // Get Heap_lock if concurrent locks will be dumped |
duke@435 | 167 | if (_print_concurrent_locks) { |
duke@435 | 168 | Heap_lock->lock(); |
duke@435 | 169 | } |
duke@435 | 170 | return true; |
duke@435 | 171 | } |
duke@435 | 172 | |
duke@435 | 173 | void VM_PrintThreads::doit() { |
duke@435 | 174 | Threads::print_on(_out, true, false, _print_concurrent_locks); |
duke@435 | 175 | } |
duke@435 | 176 | |
duke@435 | 177 | void VM_PrintThreads::doit_epilogue() { |
duke@435 | 178 | if (_print_concurrent_locks) { |
duke@435 | 179 | // Release Heap_lock |
duke@435 | 180 | Heap_lock->unlock(); |
duke@435 | 181 | } |
duke@435 | 182 | } |
duke@435 | 183 | |
duke@435 | 184 | void VM_PrintJNI::doit() { |
duke@435 | 185 | JNIHandles::print_on(_out); |
duke@435 | 186 | } |
duke@435 | 187 | |
duke@435 | 188 | VM_FindDeadlocks::~VM_FindDeadlocks() { |
duke@435 | 189 | if (_deadlocks != NULL) { |
duke@435 | 190 | DeadlockCycle* cycle = _deadlocks; |
duke@435 | 191 | while (cycle != NULL) { |
duke@435 | 192 | DeadlockCycle* d = cycle; |
duke@435 | 193 | cycle = cycle->next(); |
duke@435 | 194 | delete d; |
duke@435 | 195 | } |
duke@435 | 196 | } |
duke@435 | 197 | } |
duke@435 | 198 | |
duke@435 | 199 | bool VM_FindDeadlocks::doit_prologue() { |
duke@435 | 200 | assert(Thread::current()->is_Java_thread(), "just checking"); |
duke@435 | 201 | |
duke@435 | 202 | // Load AbstractOwnableSynchronizer class |
duke@435 | 203 | if (_concurrent_locks && JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 204 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); |
duke@435 | 205 | } |
duke@435 | 206 | |
duke@435 | 207 | return true; |
duke@435 | 208 | } |
duke@435 | 209 | |
duke@435 | 210 | void VM_FindDeadlocks::doit() { |
duke@435 | 211 | _deadlocks = ThreadService::find_deadlocks_at_safepoint(_concurrent_locks); |
duke@435 | 212 | if (_out != NULL) { |
duke@435 | 213 | int num_deadlocks = 0; |
duke@435 | 214 | for (DeadlockCycle* cycle = _deadlocks; cycle != NULL; cycle = cycle->next()) { |
duke@435 | 215 | num_deadlocks++; |
duke@435 | 216 | cycle->print_on(_out); |
duke@435 | 217 | } |
duke@435 | 218 | |
duke@435 | 219 | if (num_deadlocks == 1) { |
duke@435 | 220 | _out->print_cr("\nFound 1 deadlock.\n"); |
duke@435 | 221 | _out->flush(); |
duke@435 | 222 | } else if (num_deadlocks > 1) { |
duke@435 | 223 | _out->print_cr("\nFound %d deadlocks.\n", num_deadlocks); |
duke@435 | 224 | _out->flush(); |
duke@435 | 225 | } |
duke@435 | 226 | } |
duke@435 | 227 | } |
duke@435 | 228 | |
duke@435 | 229 | VM_ThreadDump::VM_ThreadDump(ThreadDumpResult* result, |
duke@435 | 230 | int max_depth, |
duke@435 | 231 | bool with_locked_monitors, |
duke@435 | 232 | bool with_locked_synchronizers) { |
duke@435 | 233 | _result = result; |
duke@435 | 234 | _num_threads = 0; // 0 indicates all threads |
duke@435 | 235 | _threads = NULL; |
duke@435 | 236 | _result = result; |
duke@435 | 237 | _max_depth = max_depth; |
duke@435 | 238 | _with_locked_monitors = with_locked_monitors; |
duke@435 | 239 | _with_locked_synchronizers = with_locked_synchronizers; |
duke@435 | 240 | } |
duke@435 | 241 | |
duke@435 | 242 | VM_ThreadDump::VM_ThreadDump(ThreadDumpResult* result, |
duke@435 | 243 | GrowableArray<instanceHandle>* threads, |
duke@435 | 244 | int num_threads, |
duke@435 | 245 | int max_depth, |
duke@435 | 246 | bool with_locked_monitors, |
duke@435 | 247 | bool with_locked_synchronizers) { |
duke@435 | 248 | _result = result; |
duke@435 | 249 | _num_threads = num_threads; |
duke@435 | 250 | _threads = threads; |
duke@435 | 251 | _result = result; |
duke@435 | 252 | _max_depth = max_depth; |
duke@435 | 253 | _with_locked_monitors = with_locked_monitors; |
duke@435 | 254 | _with_locked_synchronizers = with_locked_synchronizers; |
duke@435 | 255 | } |
duke@435 | 256 | |
duke@435 | 257 | bool VM_ThreadDump::doit_prologue() { |
duke@435 | 258 | assert(Thread::current()->is_Java_thread(), "just checking"); |
duke@435 | 259 | |
duke@435 | 260 | // Load AbstractOwnableSynchronizer class before taking thread snapshots |
duke@435 | 261 | if (JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 262 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); |
duke@435 | 263 | } |
duke@435 | 264 | |
duke@435 | 265 | if (_with_locked_synchronizers) { |
duke@435 | 266 | // Acquire Heap_lock to dump concurrent locks |
duke@435 | 267 | Heap_lock->lock(); |
duke@435 | 268 | } |
duke@435 | 269 | |
duke@435 | 270 | return true; |
duke@435 | 271 | } |
duke@435 | 272 | |
duke@435 | 273 | void VM_ThreadDump::doit_epilogue() { |
duke@435 | 274 | if (_with_locked_synchronizers) { |
duke@435 | 275 | // Release Heap_lock |
duke@435 | 276 | Heap_lock->unlock(); |
duke@435 | 277 | } |
duke@435 | 278 | } |
duke@435 | 279 | |
duke@435 | 280 | void VM_ThreadDump::doit() { |
duke@435 | 281 | ResourceMark rm; |
duke@435 | 282 | |
duke@435 | 283 | ConcurrentLocksDump concurrent_locks(true); |
duke@435 | 284 | if (_with_locked_synchronizers) { |
duke@435 | 285 | concurrent_locks.dump_at_safepoint(); |
duke@435 | 286 | } |
duke@435 | 287 | |
duke@435 | 288 | if (_num_threads == 0) { |
duke@435 | 289 | // Snapshot all live threads |
duke@435 | 290 | for (JavaThread* jt = Threads::first(); jt != NULL; jt = jt->next()) { |
duke@435 | 291 | if (jt->is_exiting() || |
duke@435 | 292 | jt->is_hidden_from_external_view()) { |
duke@435 | 293 | // skip terminating threads and hidden threads |
duke@435 | 294 | continue; |
duke@435 | 295 | } |
duke@435 | 296 | ThreadConcurrentLocks* tcl = NULL; |
duke@435 | 297 | if (_with_locked_synchronizers) { |
duke@435 | 298 | tcl = concurrent_locks.thread_concurrent_locks(jt); |
duke@435 | 299 | } |
duke@435 | 300 | ThreadSnapshot* ts = snapshot_thread(jt, tcl); |
duke@435 | 301 | _result->add_thread_snapshot(ts); |
duke@435 | 302 | } |
duke@435 | 303 | } else { |
duke@435 | 304 | // Snapshot threads in the given _threads array |
duke@435 | 305 | // A dummy snapshot is created if a thread doesn't exist |
duke@435 | 306 | for (int i = 0; i < _num_threads; i++) { |
duke@435 | 307 | instanceHandle th = _threads->at(i); |
duke@435 | 308 | if (th() == NULL) { |
duke@435 | 309 | // skip if the thread doesn't exist |
duke@435 | 310 | // Add a dummy snapshot |
duke@435 | 311 | _result->add_thread_snapshot(new ThreadSnapshot()); |
duke@435 | 312 | continue; |
duke@435 | 313 | } |
duke@435 | 314 | |
duke@435 | 315 | // Dump thread stack only if the thread is alive and not exiting |
duke@435 | 316 | // and not VM internal thread. |
duke@435 | 317 | JavaThread* jt = java_lang_Thread::thread(th()); |
duke@435 | 318 | if (jt == NULL || /* thread not alive */ |
duke@435 | 319 | jt->is_exiting() || |
duke@435 | 320 | jt->is_hidden_from_external_view()) { |
duke@435 | 321 | // add a NULL snapshot if skipped |
duke@435 | 322 | _result->add_thread_snapshot(new ThreadSnapshot()); |
duke@435 | 323 | continue; |
duke@435 | 324 | } |
duke@435 | 325 | ThreadConcurrentLocks* tcl = NULL; |
duke@435 | 326 | if (_with_locked_synchronizers) { |
duke@435 | 327 | tcl = concurrent_locks.thread_concurrent_locks(jt); |
duke@435 | 328 | } |
duke@435 | 329 | ThreadSnapshot* ts = snapshot_thread(jt, tcl); |
duke@435 | 330 | _result->add_thread_snapshot(ts); |
duke@435 | 331 | } |
duke@435 | 332 | } |
duke@435 | 333 | } |
duke@435 | 334 | |
duke@435 | 335 | ThreadSnapshot* VM_ThreadDump::snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl) { |
duke@435 | 336 | ThreadSnapshot* snapshot = new ThreadSnapshot(java_thread); |
duke@435 | 337 | snapshot->dump_stack_at_safepoint(_max_depth, _with_locked_monitors); |
duke@435 | 338 | snapshot->set_concurrent_locks(tcl); |
duke@435 | 339 | return snapshot; |
duke@435 | 340 | } |
duke@435 | 341 | |
duke@435 | 342 | volatile bool VM_Exit::_vm_exited = false; |
duke@435 | 343 | Thread * VM_Exit::_shutdown_thread = NULL; |
duke@435 | 344 | |
duke@435 | 345 | int VM_Exit::set_vm_exited() { |
duke@435 | 346 | Thread * thr_cur = ThreadLocalStorage::get_thread_slow(); |
duke@435 | 347 | |
duke@435 | 348 | assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint already"); |
duke@435 | 349 | |
duke@435 | 350 | int num_active = 0; |
duke@435 | 351 | |
duke@435 | 352 | _shutdown_thread = thr_cur; |
duke@435 | 353 | _vm_exited = true; // global flag |
duke@435 | 354 | for(JavaThread *thr = Threads::first(); thr != NULL; thr = thr->next()) |
duke@435 | 355 | if (thr!=thr_cur && thr->thread_state() == _thread_in_native) { |
duke@435 | 356 | ++num_active; |
duke@435 | 357 | thr->set_terminated(JavaThread::_vm_exited); // per-thread flag |
duke@435 | 358 | } |
duke@435 | 359 | |
duke@435 | 360 | return num_active; |
duke@435 | 361 | } |
duke@435 | 362 | |
duke@435 | 363 | int VM_Exit::wait_for_threads_in_native_to_block() { |
duke@435 | 364 | // VM exits at safepoint. This function must be called at the final safepoint |
duke@435 | 365 | // to wait for threads in _thread_in_native state to be quiescent. |
duke@435 | 366 | assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint already"); |
duke@435 | 367 | |
duke@435 | 368 | Thread * thr_cur = ThreadLocalStorage::get_thread_slow(); |
duke@435 | 369 | Monitor timer(Mutex::leaf, "VM_Exit timer", true); |
duke@435 | 370 | |
duke@435 | 371 | // Compiler threads need longer wait because they can access VM data directly |
duke@435 | 372 | // while in native. If they are active and some structures being used are |
duke@435 | 373 | // deleted by the shutdown sequence, they will crash. On the other hand, user |
duke@435 | 374 | // threads must go through native=>Java/VM transitions first to access VM |
duke@435 | 375 | // data, and they will be stopped during state transition. In theory, we |
duke@435 | 376 | // don't have to wait for user threads to be quiescent, but it's always |
duke@435 | 377 | // better to terminate VM when current thread is the only active thread, so |
duke@435 | 378 | // wait for user threads too. Numbers are in 10 milliseconds. |
duke@435 | 379 | int max_wait_user_thread = 30; // at least 300 milliseconds |
duke@435 | 380 | int max_wait_compiler_thread = 1000; // at least 10 seconds |
duke@435 | 381 | |
duke@435 | 382 | int max_wait = max_wait_compiler_thread; |
duke@435 | 383 | |
duke@435 | 384 | int attempts = 0; |
duke@435 | 385 | while (true) { |
duke@435 | 386 | int num_active = 0; |
duke@435 | 387 | int num_active_compiler_thread = 0; |
duke@435 | 388 | |
duke@435 | 389 | for(JavaThread *thr = Threads::first(); thr != NULL; thr = thr->next()) { |
duke@435 | 390 | if (thr!=thr_cur && thr->thread_state() == _thread_in_native) { |
duke@435 | 391 | num_active++; |
duke@435 | 392 | if (thr->is_Compiler_thread()) { |
duke@435 | 393 | num_active_compiler_thread++; |
duke@435 | 394 | } |
duke@435 | 395 | } |
duke@435 | 396 | } |
duke@435 | 397 | |
duke@435 | 398 | if (num_active == 0) { |
duke@435 | 399 | return 0; |
duke@435 | 400 | } else if (attempts > max_wait) { |
duke@435 | 401 | return num_active; |
duke@435 | 402 | } else if (num_active_compiler_thread == 0 && attempts > max_wait_user_thread) { |
duke@435 | 403 | return num_active; |
duke@435 | 404 | } |
duke@435 | 405 | |
duke@435 | 406 | attempts++; |
duke@435 | 407 | |
duke@435 | 408 | MutexLockerEx ml(&timer, Mutex::_no_safepoint_check_flag); |
duke@435 | 409 | timer.wait(Mutex::_no_safepoint_check_flag, 10); |
duke@435 | 410 | } |
duke@435 | 411 | } |
duke@435 | 412 | |
duke@435 | 413 | void VM_Exit::doit() { |
duke@435 | 414 | CompileBroker::set_should_block(); |
duke@435 | 415 | |
duke@435 | 416 | // Wait for a short period for threads in native to block. Any thread |
duke@435 | 417 | // still executing native code after the wait will be stopped at |
duke@435 | 418 | // native==>Java/VM barriers. |
duke@435 | 419 | // Among 16276 JCK tests, 94% of them come here without any threads still |
duke@435 | 420 | // running in native; the other 6% are quiescent within 250ms (Ultra 80). |
duke@435 | 421 | wait_for_threads_in_native_to_block(); |
duke@435 | 422 | |
duke@435 | 423 | set_vm_exited(); |
duke@435 | 424 | |
duke@435 | 425 | // cleanup globals resources before exiting. exit_globals() currently |
duke@435 | 426 | // cleans up outputStream resources and PerfMemory resources. |
duke@435 | 427 | exit_globals(); |
duke@435 | 428 | |
duke@435 | 429 | // Check for exit hook |
duke@435 | 430 | exit_hook_t exit_hook = Arguments::exit_hook(); |
duke@435 | 431 | if (exit_hook != NULL) { |
duke@435 | 432 | // exit hook should exit. |
duke@435 | 433 | exit_hook(_exit_code); |
duke@435 | 434 | // ... but if it didn't, we must do it here |
duke@435 | 435 | vm_direct_exit(_exit_code); |
duke@435 | 436 | } else { |
duke@435 | 437 | vm_direct_exit(_exit_code); |
duke@435 | 438 | } |
duke@435 | 439 | } |
duke@435 | 440 | |
duke@435 | 441 | |
duke@435 | 442 | void VM_Exit::wait_if_vm_exited() { |
duke@435 | 443 | if (_vm_exited && |
duke@435 | 444 | ThreadLocalStorage::get_thread_slow() != _shutdown_thread) { |
duke@435 | 445 | // _vm_exited is set at safepoint, and the Threads_lock is never released |
duke@435 | 446 | // we will block here until the process dies |
duke@435 | 447 | Threads_lock->lock_without_safepoint_check(); |
duke@435 | 448 | ShouldNotReachHere(); |
duke@435 | 449 | } |
duke@435 | 450 | } |