Fri, 06 Dec 2019 12:42:29 +0100
8235243: handle VS2017 15.9 and VS2019 in abstract_vm_version
8235325: build failure on Linux after 8235243
Reviewed-by: dholmes, mdoerr
duke@435 | 1 | /* |
drchase@6680 | 2 | * Copyright (c) 1997, 2014, Oracle and/or its affiliates. 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 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
coleenp@2497 | 26 | #include "classfile/symbolTable.hpp" |
stefank@2314 | 27 | #include "classfile/vmSymbols.hpp" |
stefank@2314 | 28 | #include "compiler/compileBroker.hpp" |
stefank@2314 | 29 | #include "compiler/compilerOracle.hpp" |
stefank@2314 | 30 | #include "gc_implementation/shared/isGCActiveMark.hpp" |
stefank@2314 | 31 | #include "memory/resourceArea.hpp" |
coleenp@2497 | 32 | #include "oops/symbol.hpp" |
stefank@2314 | 33 | #include "runtime/arguments.hpp" |
stefank@2314 | 34 | #include "runtime/deoptimization.hpp" |
stefank@2314 | 35 | #include "runtime/interfaceSupport.hpp" |
stefank@2314 | 36 | #include "runtime/sweeper.hpp" |
stefank@4299 | 37 | #include "runtime/thread.inline.hpp" |
stefank@2314 | 38 | #include "runtime/vm_operations.hpp" |
stefank@2314 | 39 | #include "services/threadService.hpp" |
duke@435 | 40 | |
drchase@6680 | 41 | PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
drchase@6680 | 42 | |
duke@435 | 43 | #define VM_OP_NAME_INITIALIZE(name) #name, |
duke@435 | 44 | |
duke@435 | 45 | const char* VM_Operation::_names[VM_Operation::VMOp_Terminating] = \ |
duke@435 | 46 | { VM_OPS_DO(VM_OP_NAME_INITIALIZE) }; |
duke@435 | 47 | |
duke@435 | 48 | void VM_Operation::set_calling_thread(Thread* thread, ThreadPriority priority) { |
duke@435 | 49 | _calling_thread = thread; |
duke@435 | 50 | assert(MinPriority <= priority && priority <= MaxPriority, "sanity check"); |
duke@435 | 51 | _priority = priority; |
duke@435 | 52 | } |
duke@435 | 53 | |
duke@435 | 54 | |
duke@435 | 55 | void VM_Operation::evaluate() { |
duke@435 | 56 | ResourceMark rm; |
duke@435 | 57 | if (TraceVMOperation) { |
duke@435 | 58 | tty->print("["); |
duke@435 | 59 | NOT_PRODUCT(print();) |
duke@435 | 60 | } |
duke@435 | 61 | doit(); |
duke@435 | 62 | if (TraceVMOperation) { |
duke@435 | 63 | tty->print_cr("]"); |
duke@435 | 64 | } |
duke@435 | 65 | } |
duke@435 | 66 | |
sla@5237 | 67 | const char* VM_Operation::mode_to_string(Mode mode) { |
sla@5237 | 68 | switch(mode) { |
sla@5237 | 69 | case _safepoint : return "safepoint"; |
sla@5237 | 70 | case _no_safepoint : return "no safepoint"; |
sla@5237 | 71 | case _concurrent : return "concurrent"; |
sla@5237 | 72 | case _async_safepoint: return "async safepoint"; |
sla@5237 | 73 | default : return "unknown"; |
sla@5237 | 74 | } |
sla@5237 | 75 | } |
duke@435 | 76 | // Called by fatal error handler. |
duke@435 | 77 | void VM_Operation::print_on_error(outputStream* st) const { |
duke@435 | 78 | st->print("VM_Operation (" PTR_FORMAT "): ", this); |
duke@435 | 79 | st->print("%s", name()); |
duke@435 | 80 | |
sla@5237 | 81 | const char* mode = mode_to_string(evaluation_mode()); |
duke@435 | 82 | st->print(", mode: %s", mode); |
duke@435 | 83 | |
duke@435 | 84 | if (calling_thread()) { |
duke@435 | 85 | st->print(", requested by thread " PTR_FORMAT, calling_thread()); |
duke@435 | 86 | } |
duke@435 | 87 | } |
duke@435 | 88 | |
duke@435 | 89 | void VM_ThreadStop::doit() { |
duke@435 | 90 | assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); |
duke@435 | 91 | JavaThread* target = java_lang_Thread::thread(target_thread()); |
duke@435 | 92 | // Note that this now allows multiple ThreadDeath exceptions to be |
duke@435 | 93 | // thrown at a thread. |
duke@435 | 94 | if (target != NULL) { |
duke@435 | 95 | // the thread has run and is not already in the process of exiting |
duke@435 | 96 | target->send_thread_stop(throwable()); |
duke@435 | 97 | } |
duke@435 | 98 | } |
duke@435 | 99 | |
duke@435 | 100 | void VM_Deoptimize::doit() { |
duke@435 | 101 | // We do not want any GCs to happen while we are in the middle of this VM operation |
duke@435 | 102 | ResourceMark rm; |
duke@435 | 103 | DeoptimizationMarker dm; |
duke@435 | 104 | |
duke@435 | 105 | // Deoptimize all activations depending on marked nmethods |
duke@435 | 106 | Deoptimization::deoptimize_dependents(); |
duke@435 | 107 | |
thartmann@8074 | 108 | // Make the dependent methods not entrant |
thartmann@8074 | 109 | CodeCache::make_marked_nmethods_not_entrant(); |
duke@435 | 110 | } |
duke@435 | 111 | |
duke@435 | 112 | |
duke@435 | 113 | VM_DeoptimizeFrame::VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id) { |
duke@435 | 114 | _thread = thread; |
duke@435 | 115 | _id = id; |
duke@435 | 116 | } |
duke@435 | 117 | |
duke@435 | 118 | |
duke@435 | 119 | void VM_DeoptimizeFrame::doit() { |
never@2260 | 120 | Deoptimization::deoptimize_frame_internal(_thread, _id); |
duke@435 | 121 | } |
duke@435 | 122 | |
duke@435 | 123 | |
duke@435 | 124 | #ifndef PRODUCT |
duke@435 | 125 | |
duke@435 | 126 | void VM_DeoptimizeAll::doit() { |
duke@435 | 127 | DeoptimizationMarker dm; |
duke@435 | 128 | // deoptimize all java threads in the system |
duke@435 | 129 | if (DeoptimizeALot) { |
duke@435 | 130 | for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { |
duke@435 | 131 | if (thread->has_last_Java_frame()) { |
duke@435 | 132 | thread->deoptimize(); |
duke@435 | 133 | } |
duke@435 | 134 | } |
duke@435 | 135 | } else if (DeoptimizeRandom) { |
duke@435 | 136 | |
duke@435 | 137 | // Deoptimize some selected threads and frames |
duke@435 | 138 | int tnum = os::random() & 0x3; |
duke@435 | 139 | int fnum = os::random() & 0x3; |
duke@435 | 140 | int tcount = 0; |
duke@435 | 141 | for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { |
duke@435 | 142 | if (thread->has_last_Java_frame()) { |
duke@435 | 143 | if (tcount++ == tnum) { |
duke@435 | 144 | tcount = 0; |
duke@435 | 145 | int fcount = 0; |
duke@435 | 146 | // Deoptimize some selected frames. |
duke@435 | 147 | // Biased llocking wants a updated register map |
duke@435 | 148 | for(StackFrameStream fst(thread, UseBiasedLocking); !fst.is_done(); fst.next()) { |
duke@435 | 149 | if (fst.current()->can_be_deoptimized()) { |
duke@435 | 150 | if (fcount++ == fnum) { |
duke@435 | 151 | fcount = 0; |
duke@435 | 152 | Deoptimization::deoptimize(thread, *fst.current(), fst.register_map()); |
duke@435 | 153 | } |
duke@435 | 154 | } |
duke@435 | 155 | } |
duke@435 | 156 | } |
duke@435 | 157 | } |
duke@435 | 158 | } |
duke@435 | 159 | } |
duke@435 | 160 | } |
duke@435 | 161 | |
duke@435 | 162 | |
duke@435 | 163 | void VM_ZombieAll::doit() { |
duke@435 | 164 | JavaThread *thread = (JavaThread *)calling_thread(); |
duke@435 | 165 | assert(thread->is_Java_thread(), "must be a Java thread"); |
duke@435 | 166 | thread->make_zombies(); |
duke@435 | 167 | } |
duke@435 | 168 | |
duke@435 | 169 | #endif // !PRODUCT |
duke@435 | 170 | |
coleenp@2497 | 171 | void VM_UnlinkSymbols::doit() { |
coleenp@2497 | 172 | JavaThread *thread = (JavaThread *)calling_thread(); |
coleenp@2497 | 173 | assert(thread->is_Java_thread(), "must be a Java thread"); |
coleenp@2497 | 174 | SymbolTable::unlink(); |
coleenp@2497 | 175 | } |
coleenp@2497 | 176 | |
duke@435 | 177 | void VM_Verify::doit() { |
johnc@4899 | 178 | Universe::heap()->prepare_for_verify(); |
johnc@4899 | 179 | Universe::verify(_silent); |
duke@435 | 180 | } |
duke@435 | 181 | |
duke@435 | 182 | bool VM_PrintThreads::doit_prologue() { |
duke@435 | 183 | assert(Thread::current()->is_Java_thread(), "just checking"); |
duke@435 | 184 | |
duke@435 | 185 | // Make sure AbstractOwnableSynchronizer is loaded |
duke@435 | 186 | if (JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 187 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); |
duke@435 | 188 | } |
duke@435 | 189 | |
duke@435 | 190 | // Get Heap_lock if concurrent locks will be dumped |
duke@435 | 191 | if (_print_concurrent_locks) { |
duke@435 | 192 | Heap_lock->lock(); |
duke@435 | 193 | } |
duke@435 | 194 | return true; |
duke@435 | 195 | } |
duke@435 | 196 | |
duke@435 | 197 | void VM_PrintThreads::doit() { |
duke@435 | 198 | Threads::print_on(_out, true, false, _print_concurrent_locks); |
duke@435 | 199 | } |
duke@435 | 200 | |
duke@435 | 201 | void VM_PrintThreads::doit_epilogue() { |
duke@435 | 202 | if (_print_concurrent_locks) { |
duke@435 | 203 | // Release Heap_lock |
duke@435 | 204 | Heap_lock->unlock(); |
duke@435 | 205 | } |
duke@435 | 206 | } |
duke@435 | 207 | |
duke@435 | 208 | void VM_PrintJNI::doit() { |
duke@435 | 209 | JNIHandles::print_on(_out); |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | VM_FindDeadlocks::~VM_FindDeadlocks() { |
duke@435 | 213 | if (_deadlocks != NULL) { |
duke@435 | 214 | DeadlockCycle* cycle = _deadlocks; |
duke@435 | 215 | while (cycle != NULL) { |
duke@435 | 216 | DeadlockCycle* d = cycle; |
duke@435 | 217 | cycle = cycle->next(); |
duke@435 | 218 | delete d; |
duke@435 | 219 | } |
duke@435 | 220 | } |
duke@435 | 221 | } |
duke@435 | 222 | |
duke@435 | 223 | bool VM_FindDeadlocks::doit_prologue() { |
duke@435 | 224 | assert(Thread::current()->is_Java_thread(), "just checking"); |
duke@435 | 225 | |
duke@435 | 226 | // Load AbstractOwnableSynchronizer class |
duke@435 | 227 | if (_concurrent_locks && JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 228 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); |
duke@435 | 229 | } |
duke@435 | 230 | |
duke@435 | 231 | return true; |
duke@435 | 232 | } |
duke@435 | 233 | |
duke@435 | 234 | void VM_FindDeadlocks::doit() { |
duke@435 | 235 | _deadlocks = ThreadService::find_deadlocks_at_safepoint(_concurrent_locks); |
duke@435 | 236 | if (_out != NULL) { |
duke@435 | 237 | int num_deadlocks = 0; |
duke@435 | 238 | for (DeadlockCycle* cycle = _deadlocks; cycle != NULL; cycle = cycle->next()) { |
duke@435 | 239 | num_deadlocks++; |
duke@435 | 240 | cycle->print_on(_out); |
duke@435 | 241 | } |
duke@435 | 242 | |
duke@435 | 243 | if (num_deadlocks == 1) { |
duke@435 | 244 | _out->print_cr("\nFound 1 deadlock.\n"); |
duke@435 | 245 | _out->flush(); |
duke@435 | 246 | } else if (num_deadlocks > 1) { |
duke@435 | 247 | _out->print_cr("\nFound %d deadlocks.\n", num_deadlocks); |
duke@435 | 248 | _out->flush(); |
duke@435 | 249 | } |
duke@435 | 250 | } |
duke@435 | 251 | } |
duke@435 | 252 | |
duke@435 | 253 | VM_ThreadDump::VM_ThreadDump(ThreadDumpResult* result, |
duke@435 | 254 | int max_depth, |
duke@435 | 255 | bool with_locked_monitors, |
duke@435 | 256 | bool with_locked_synchronizers) { |
duke@435 | 257 | _result = result; |
duke@435 | 258 | _num_threads = 0; // 0 indicates all threads |
duke@435 | 259 | _threads = NULL; |
duke@435 | 260 | _result = result; |
duke@435 | 261 | _max_depth = max_depth; |
duke@435 | 262 | _with_locked_monitors = with_locked_monitors; |
duke@435 | 263 | _with_locked_synchronizers = with_locked_synchronizers; |
duke@435 | 264 | } |
duke@435 | 265 | |
duke@435 | 266 | VM_ThreadDump::VM_ThreadDump(ThreadDumpResult* result, |
duke@435 | 267 | GrowableArray<instanceHandle>* threads, |
duke@435 | 268 | int num_threads, |
duke@435 | 269 | int max_depth, |
duke@435 | 270 | bool with_locked_monitors, |
duke@435 | 271 | bool with_locked_synchronizers) { |
duke@435 | 272 | _result = result; |
duke@435 | 273 | _num_threads = num_threads; |
duke@435 | 274 | _threads = threads; |
duke@435 | 275 | _result = result; |
duke@435 | 276 | _max_depth = max_depth; |
duke@435 | 277 | _with_locked_monitors = with_locked_monitors; |
duke@435 | 278 | _with_locked_synchronizers = with_locked_synchronizers; |
duke@435 | 279 | } |
duke@435 | 280 | |
duke@435 | 281 | bool VM_ThreadDump::doit_prologue() { |
duke@435 | 282 | assert(Thread::current()->is_Java_thread(), "just checking"); |
duke@435 | 283 | |
duke@435 | 284 | // Load AbstractOwnableSynchronizer class before taking thread snapshots |
duke@435 | 285 | if (JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 286 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current()); |
duke@435 | 287 | } |
duke@435 | 288 | |
duke@435 | 289 | if (_with_locked_synchronizers) { |
duke@435 | 290 | // Acquire Heap_lock to dump concurrent locks |
duke@435 | 291 | Heap_lock->lock(); |
duke@435 | 292 | } |
duke@435 | 293 | |
duke@435 | 294 | return true; |
duke@435 | 295 | } |
duke@435 | 296 | |
duke@435 | 297 | void VM_ThreadDump::doit_epilogue() { |
duke@435 | 298 | if (_with_locked_synchronizers) { |
duke@435 | 299 | // Release Heap_lock |
duke@435 | 300 | Heap_lock->unlock(); |
duke@435 | 301 | } |
duke@435 | 302 | } |
duke@435 | 303 | |
duke@435 | 304 | void VM_ThreadDump::doit() { |
duke@435 | 305 | ResourceMark rm; |
duke@435 | 306 | |
duke@435 | 307 | ConcurrentLocksDump concurrent_locks(true); |
duke@435 | 308 | if (_with_locked_synchronizers) { |
duke@435 | 309 | concurrent_locks.dump_at_safepoint(); |
duke@435 | 310 | } |
duke@435 | 311 | |
duke@435 | 312 | if (_num_threads == 0) { |
duke@435 | 313 | // Snapshot all live threads |
duke@435 | 314 | for (JavaThread* jt = Threads::first(); jt != NULL; jt = jt->next()) { |
duke@435 | 315 | if (jt->is_exiting() || |
duke@435 | 316 | jt->is_hidden_from_external_view()) { |
duke@435 | 317 | // skip terminating threads and hidden threads |
duke@435 | 318 | continue; |
duke@435 | 319 | } |
duke@435 | 320 | ThreadConcurrentLocks* tcl = NULL; |
duke@435 | 321 | if (_with_locked_synchronizers) { |
duke@435 | 322 | tcl = concurrent_locks.thread_concurrent_locks(jt); |
duke@435 | 323 | } |
duke@435 | 324 | ThreadSnapshot* ts = snapshot_thread(jt, tcl); |
duke@435 | 325 | _result->add_thread_snapshot(ts); |
duke@435 | 326 | } |
duke@435 | 327 | } else { |
duke@435 | 328 | // Snapshot threads in the given _threads array |
duke@435 | 329 | // A dummy snapshot is created if a thread doesn't exist |
duke@435 | 330 | for (int i = 0; i < _num_threads; i++) { |
duke@435 | 331 | instanceHandle th = _threads->at(i); |
duke@435 | 332 | if (th() == NULL) { |
duke@435 | 333 | // skip if the thread doesn't exist |
duke@435 | 334 | // Add a dummy snapshot |
duke@435 | 335 | _result->add_thread_snapshot(new ThreadSnapshot()); |
duke@435 | 336 | continue; |
duke@435 | 337 | } |
duke@435 | 338 | |
duke@435 | 339 | // Dump thread stack only if the thread is alive and not exiting |
duke@435 | 340 | // and not VM internal thread. |
duke@435 | 341 | JavaThread* jt = java_lang_Thread::thread(th()); |
duke@435 | 342 | if (jt == NULL || /* thread not alive */ |
duke@435 | 343 | jt->is_exiting() || |
duke@435 | 344 | jt->is_hidden_from_external_view()) { |
duke@435 | 345 | // add a NULL snapshot if skipped |
duke@435 | 346 | _result->add_thread_snapshot(new ThreadSnapshot()); |
duke@435 | 347 | continue; |
duke@435 | 348 | } |
duke@435 | 349 | ThreadConcurrentLocks* tcl = NULL; |
duke@435 | 350 | if (_with_locked_synchronizers) { |
duke@435 | 351 | tcl = concurrent_locks.thread_concurrent_locks(jt); |
duke@435 | 352 | } |
duke@435 | 353 | ThreadSnapshot* ts = snapshot_thread(jt, tcl); |
duke@435 | 354 | _result->add_thread_snapshot(ts); |
duke@435 | 355 | } |
duke@435 | 356 | } |
duke@435 | 357 | } |
duke@435 | 358 | |
duke@435 | 359 | ThreadSnapshot* VM_ThreadDump::snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl) { |
duke@435 | 360 | ThreadSnapshot* snapshot = new ThreadSnapshot(java_thread); |
duke@435 | 361 | snapshot->dump_stack_at_safepoint(_max_depth, _with_locked_monitors); |
duke@435 | 362 | snapshot->set_concurrent_locks(tcl); |
duke@435 | 363 | return snapshot; |
duke@435 | 364 | } |
duke@435 | 365 | |
duke@435 | 366 | volatile bool VM_Exit::_vm_exited = false; |
duke@435 | 367 | Thread * VM_Exit::_shutdown_thread = NULL; |
duke@435 | 368 | |
duke@435 | 369 | int VM_Exit::set_vm_exited() { |
duke@435 | 370 | Thread * thr_cur = ThreadLocalStorage::get_thread_slow(); |
duke@435 | 371 | |
duke@435 | 372 | assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint already"); |
duke@435 | 373 | |
duke@435 | 374 | int num_active = 0; |
duke@435 | 375 | |
duke@435 | 376 | _shutdown_thread = thr_cur; |
duke@435 | 377 | _vm_exited = true; // global flag |
duke@435 | 378 | for(JavaThread *thr = Threads::first(); thr != NULL; thr = thr->next()) |
duke@435 | 379 | if (thr!=thr_cur && thr->thread_state() == _thread_in_native) { |
duke@435 | 380 | ++num_active; |
duke@435 | 381 | thr->set_terminated(JavaThread::_vm_exited); // per-thread flag |
duke@435 | 382 | } |
duke@435 | 383 | |
duke@435 | 384 | return num_active; |
duke@435 | 385 | } |
duke@435 | 386 | |
duke@435 | 387 | int VM_Exit::wait_for_threads_in_native_to_block() { |
duke@435 | 388 | // VM exits at safepoint. This function must be called at the final safepoint |
duke@435 | 389 | // to wait for threads in _thread_in_native state to be quiescent. |
duke@435 | 390 | assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint already"); |
duke@435 | 391 | |
duke@435 | 392 | Thread * thr_cur = ThreadLocalStorage::get_thread_slow(); |
duke@435 | 393 | Monitor timer(Mutex::leaf, "VM_Exit timer", true); |
duke@435 | 394 | |
duke@435 | 395 | // Compiler threads need longer wait because they can access VM data directly |
duke@435 | 396 | // while in native. If they are active and some structures being used are |
duke@435 | 397 | // deleted by the shutdown sequence, they will crash. On the other hand, user |
duke@435 | 398 | // threads must go through native=>Java/VM transitions first to access VM |
duke@435 | 399 | // data, and they will be stopped during state transition. In theory, we |
duke@435 | 400 | // don't have to wait for user threads to be quiescent, but it's always |
duke@435 | 401 | // better to terminate VM when current thread is the only active thread, so |
duke@435 | 402 | // wait for user threads too. Numbers are in 10 milliseconds. |
duke@435 | 403 | int max_wait_user_thread = 30; // at least 300 milliseconds |
duke@435 | 404 | int max_wait_compiler_thread = 1000; // at least 10 seconds |
duke@435 | 405 | |
duke@435 | 406 | int max_wait = max_wait_compiler_thread; |
duke@435 | 407 | |
duke@435 | 408 | int attempts = 0; |
duke@435 | 409 | while (true) { |
duke@435 | 410 | int num_active = 0; |
duke@435 | 411 | int num_active_compiler_thread = 0; |
duke@435 | 412 | |
duke@435 | 413 | for(JavaThread *thr = Threads::first(); thr != NULL; thr = thr->next()) { |
duke@435 | 414 | if (thr!=thr_cur && thr->thread_state() == _thread_in_native) { |
duke@435 | 415 | num_active++; |
duke@435 | 416 | if (thr->is_Compiler_thread()) { |
duke@435 | 417 | num_active_compiler_thread++; |
duke@435 | 418 | } |
duke@435 | 419 | } |
duke@435 | 420 | } |
duke@435 | 421 | |
duke@435 | 422 | if (num_active == 0) { |
duke@435 | 423 | return 0; |
duke@435 | 424 | } else if (attempts > max_wait) { |
duke@435 | 425 | return num_active; |
duke@435 | 426 | } else if (num_active_compiler_thread == 0 && attempts > max_wait_user_thread) { |
duke@435 | 427 | return num_active; |
duke@435 | 428 | } |
duke@435 | 429 | |
duke@435 | 430 | attempts++; |
duke@435 | 431 | |
duke@435 | 432 | MutexLockerEx ml(&timer, Mutex::_no_safepoint_check_flag); |
duke@435 | 433 | timer.wait(Mutex::_no_safepoint_check_flag, 10); |
duke@435 | 434 | } |
duke@435 | 435 | } |
duke@435 | 436 | |
duke@435 | 437 | void VM_Exit::doit() { |
duke@435 | 438 | CompileBroker::set_should_block(); |
duke@435 | 439 | |
duke@435 | 440 | // Wait for a short period for threads in native to block. Any thread |
duke@435 | 441 | // still executing native code after the wait will be stopped at |
duke@435 | 442 | // native==>Java/VM barriers. |
duke@435 | 443 | // Among 16276 JCK tests, 94% of them come here without any threads still |
duke@435 | 444 | // running in native; the other 6% are quiescent within 250ms (Ultra 80). |
duke@435 | 445 | wait_for_threads_in_native_to_block(); |
duke@435 | 446 | |
duke@435 | 447 | set_vm_exited(); |
duke@435 | 448 | |
duke@435 | 449 | // cleanup globals resources before exiting. exit_globals() currently |
duke@435 | 450 | // cleans up outputStream resources and PerfMemory resources. |
duke@435 | 451 | exit_globals(); |
duke@435 | 452 | |
duke@435 | 453 | // Check for exit hook |
duke@435 | 454 | exit_hook_t exit_hook = Arguments::exit_hook(); |
duke@435 | 455 | if (exit_hook != NULL) { |
duke@435 | 456 | // exit hook should exit. |
duke@435 | 457 | exit_hook(_exit_code); |
duke@435 | 458 | // ... but if it didn't, we must do it here |
duke@435 | 459 | vm_direct_exit(_exit_code); |
duke@435 | 460 | } else { |
duke@435 | 461 | vm_direct_exit(_exit_code); |
duke@435 | 462 | } |
duke@435 | 463 | } |
duke@435 | 464 | |
duke@435 | 465 | |
duke@435 | 466 | void VM_Exit::wait_if_vm_exited() { |
duke@435 | 467 | if (_vm_exited && |
duke@435 | 468 | ThreadLocalStorage::get_thread_slow() != _shutdown_thread) { |
duke@435 | 469 | // _vm_exited is set at safepoint, and the Threads_lock is never released |
duke@435 | 470 | // we will block here until the process dies |
duke@435 | 471 | Threads_lock->lock_without_safepoint_check(); |
duke@435 | 472 | ShouldNotReachHere(); |
duke@435 | 473 | } |
duke@435 | 474 | } |