Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/java.cpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
| author | kvn |
|---|---|
| date | Thu, 20 Mar 2014 17:49:27 -0700 |
| parents | 6aa49042b101 |
| children | 78bbf4d43a14 |
| 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 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/symbolTable.hpp" | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "code/codeCache.hpp" | |
| 30 #include "compiler/compileBroker.hpp" | |
| 31 #include "compiler/compilerOracle.hpp" | |
| 32 #include "interpreter/bytecodeHistogram.hpp" | |
| 33 #include "memory/genCollectedHeap.hpp" | |
| 34 #include "memory/oopFactory.hpp" | |
| 35 #include "memory/universe.hpp" | |
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36 #include "oops/constantPool.hpp" |
| 1972 | 37 #include "oops/generateOopMap.hpp" |
| 38 #include "oops/instanceKlass.hpp" | |
| 39 #include "oops/instanceOop.hpp" | |
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40 #include "oops/method.hpp" |
| 1972 | 41 #include "oops/objArrayOop.hpp" |
| 42 #include "oops/oop.inline.hpp" | |
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43 #include "oops/symbol.hpp" |
| 1972 | 44 #include "prims/jvmtiExport.hpp" |
| 45 #include "runtime/arguments.hpp" | |
| 46 #include "runtime/biasedLocking.hpp" | |
| 47 #include "runtime/compilationPolicy.hpp" | |
| 48 #include "runtime/fprofiler.hpp" | |
| 49 #include "runtime/init.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/memprofiler.hpp" | |
| 53 #include "runtime/sharedRuntime.hpp" | |
| 54 #include "runtime/statSampler.hpp" | |
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55 #include "runtime/sweeper.hpp" |
| 1972 | 56 #include "runtime/task.hpp" |
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57 #include "runtime/thread.inline.hpp" |
| 1972 | 58 #include "runtime/timer.hpp" |
| 59 #include "runtime/vm_operations.hpp" | |
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60 #include "services/memReporter.hpp" |
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61 #include "services/memTracker.hpp" |
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62 #include "trace/tracing.hpp" |
| 1972 | 63 #include "utilities/dtrace.hpp" |
| 64 #include "utilities/globalDefinitions.hpp" | |
| 65 #include "utilities/histogram.hpp" | |
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66 #include "utilities/macros.hpp" |
| 1972 | 67 #include "utilities/vmError.hpp" |
| 68 #ifdef TARGET_ARCH_x86 | |
| 69 # include "vm_version_x86.hpp" | |
| 70 #endif | |
| 71 #ifdef TARGET_ARCH_sparc | |
| 72 # include "vm_version_sparc.hpp" | |
| 73 #endif | |
| 74 #ifdef TARGET_ARCH_zero | |
| 75 # include "vm_version_zero.hpp" | |
| 76 #endif | |
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77 #ifdef TARGET_ARCH_arm |
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78 # include "vm_version_arm.hpp" |
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79 #endif |
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80 #ifdef TARGET_ARCH_ppc |
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81 # include "vm_version_ppc.hpp" |
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82 #endif |
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83 #if INCLUDE_ALL_GCS |
| 1972 | 84 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" |
| 85 #include "gc_implementation/parallelScavenge/psScavenge.hpp" | |
| 86 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
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87 #endif // INCLUDE_ALL_GCS |
| 1972 | 88 #ifdef COMPILER1 |
| 89 #include "c1/c1_Compiler.hpp" | |
| 90 #include "c1/c1_Runtime1.hpp" | |
| 91 #endif | |
| 92 #ifdef COMPILER2 | |
| 93 #include "code/compiledIC.hpp" | |
| 94 #include "compiler/methodLiveness.hpp" | |
| 95 #include "opto/compile.hpp" | |
| 96 #include "opto/indexSet.hpp" | |
| 97 #include "opto/runtime.hpp" | |
| 98 #endif | |
| 0 | 99 |
| 4006 | 100 #ifndef USDT2 |
| 0 | 101 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); |
| 4006 | 102 #endif /* !USDT2 */ |
| 0 | 103 |
| 104 #ifndef PRODUCT | |
| 105 | |
| 106 // Statistics printing (method invocation histogram) | |
| 107 | |
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108 GrowableArray<Method*>* collected_invoked_methods; |
| 0 | 109 |
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110 void collect_invoked_methods(Method* m) { |
| 0 | 111 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { |
| 112 collected_invoked_methods->push(m); | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 | |
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117 GrowableArray<Method*>* collected_profiled_methods; |
| 0 | 118 |
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119 void collect_profiled_methods(Method* m) { |
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120 Thread* thread = Thread::current(); |
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121 // This HandleMark prevents a huge amount of handles from being added |
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122 // to the metadata_handles() array on the thread. |
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123 HandleMark hm(thread); |
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124 methodHandle mh(thread, m); |
| 0 | 125 if ((m->method_data() != NULL) && |
| 126 (PrintMethodData || CompilerOracle::should_print(mh))) { | |
| 127 collected_profiled_methods->push(m); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 | |
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132 int compare_methods(Method** a, Method** b) { |
| 0 | 133 // %%% there can be 32-bit overflow here |
| 134 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) | |
| 135 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); | |
| 136 } | |
| 137 | |
| 138 | |
| 139 void print_method_invocation_histogram() { | |
| 140 ResourceMark rm; | |
| 141 HandleMark hm; | |
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142 collected_invoked_methods = new GrowableArray<Method*>(1024); |
| 0 | 143 SystemDictionary::methods_do(collect_invoked_methods); |
| 144 collected_invoked_methods->sort(&compare_methods); | |
| 145 // | |
| 146 tty->cr(); | |
| 147 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); | |
| 148 tty->cr(); | |
| 149 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); | |
| 150 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, | |
| 151 synch_total = 0, nativ_total = 0, acces_total = 0; | |
| 152 for (int index = 0; index < collected_invoked_methods->length(); index++) { | |
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153 Method* m = collected_invoked_methods->at(index); |
| 0 | 154 int c = m->invocation_count() + m->compiled_invocation_count(); |
| 155 if (c >= MethodHistogramCutoff) m->print_invocation_count(); | |
| 156 int_total += m->invocation_count(); | |
| 157 comp_total += m->compiled_invocation_count(); | |
| 158 if (m->is_final()) final_total += c; | |
| 159 if (m->is_static()) static_total += c; | |
| 160 if (m->is_synchronized()) synch_total += c; | |
| 161 if (m->is_native()) nativ_total += c; | |
| 162 if (m->is_accessor()) acces_total += c; | |
| 163 } | |
| 164 tty->cr(); | |
| 165 total = int_total + comp_total; | |
| 166 tty->print_cr("Invocations summary:"); | |
| 167 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); | |
| 168 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); | |
| 169 tty->print_cr("\t%9d (100%%) total", total); | |
| 170 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); | |
| 171 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); | |
| 172 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); | |
| 173 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); | |
| 174 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); | |
| 175 tty->cr(); | |
| 176 SharedRuntime::print_call_statistics(comp_total); | |
| 177 } | |
| 178 | |
| 179 void print_method_profiling_data() { | |
| 180 ResourceMark rm; | |
| 181 HandleMark hm; | |
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182 collected_profiled_methods = new GrowableArray<Method*>(1024); |
| 0 | 183 SystemDictionary::methods_do(collect_profiled_methods); |
| 184 collected_profiled_methods->sort(&compare_methods); | |
| 185 | |
| 186 int count = collected_profiled_methods->length(); | |
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187 int total_size = 0; |
| 0 | 188 if (count > 0) { |
| 189 for (int index = 0; index < count; index++) { | |
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190 Method* m = collected_profiled_methods->at(index); |
| 0 | 191 ttyLocker ttyl; |
| 192 tty->print_cr("------------------------------------------------------------------------"); | |
| 193 //m->print_name(tty); | |
| 194 m->print_invocation_count(); | |
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195 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); |
| 0 | 196 tty->cr(); |
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197 // Dump data on parameters if any |
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198 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { |
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199 tty->fill_to(2); |
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200 m->method_data()->parameters_type_data()->print_data_on(tty); |
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201 } |
| 0 | 202 m->print_codes(); |
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203 total_size += m->method_data()->size_in_bytes(); |
| 0 | 204 } |
| 205 tty->print_cr("------------------------------------------------------------------------"); | |
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206 tty->print_cr("Total MDO size: %d bytes", total_size); |
| 0 | 207 } |
| 208 } | |
| 209 | |
| 210 void print_bytecode_count() { | |
| 211 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
| 212 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); | |
| 213 } | |
| 214 } | |
| 215 | |
| 216 AllocStats alloc_stats; | |
| 217 | |
| 218 | |
| 219 | |
| 220 // General statistics printing (profiling ...) | |
| 221 void print_statistics() { | |
| 222 #ifdef ASSERT | |
| 223 | |
| 224 if (CountRuntimeCalls) { | |
| 225 extern Histogram *RuntimeHistogram; | |
| 226 RuntimeHistogram->print(); | |
| 227 } | |
| 228 | |
| 229 if (CountJNICalls) { | |
| 230 extern Histogram *JNIHistogram; | |
| 231 JNIHistogram->print(); | |
| 232 } | |
| 233 | |
| 234 if (CountJVMCalls) { | |
| 235 extern Histogram *JVMHistogram; | |
| 236 JVMHistogram->print(); | |
| 237 } | |
| 238 | |
| 239 #endif | |
| 240 | |
| 241 if (MemProfiling) { | |
| 242 MemProfiler::disengage(); | |
| 243 } | |
| 244 | |
| 245 if (CITime) { | |
| 246 CompileBroker::print_times(); | |
| 247 } | |
| 248 | |
| 249 #ifdef COMPILER1 | |
| 250 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
| 251 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); | |
| 252 Runtime1::print_statistics(); | |
| 253 Deoptimization::print_statistics(); | |
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254 SharedRuntime::print_statistics(); |
| 0 | 255 nmethod::print_statistics(); |
| 256 } | |
| 257 #endif /* COMPILER1 */ | |
| 258 | |
| 259 #ifdef COMPILER2 | |
| 260 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
| 261 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); | |
| 262 Compile::print_statistics(); | |
| 263 #ifndef COMPILER1 | |
| 264 Deoptimization::print_statistics(); | |
| 265 nmethod::print_statistics(); | |
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266 SharedRuntime::print_statistics(); |
| 0 | 267 #endif //COMPILER1 |
| 268 os::print_statistics(); | |
| 269 } | |
| 270 | |
| 17780 | 271 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { |
| 0 | 272 OptoRuntime::print_named_counters(); |
| 273 } | |
| 274 | |
| 275 if (TimeLivenessAnalysis) { | |
| 276 MethodLiveness::print_times(); | |
| 277 } | |
| 278 #ifdef ASSERT | |
| 279 if (CollectIndexSetStatistics) { | |
| 280 IndexSet::print_statistics(); | |
| 281 } | |
| 282 #endif // ASSERT | |
| 283 #endif // COMPILER2 | |
| 284 if (CountCompiledCalls) { | |
| 285 print_method_invocation_histogram(); | |
| 286 } | |
| 1918 | 287 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { |
| 0 | 288 print_method_profiling_data(); |
| 289 } | |
| 290 if (TimeCompiler) { | |
| 291 COMPILER2_PRESENT(Compile::print_timers();) | |
| 292 } | |
| 293 if (TimeCompilationPolicy) { | |
| 294 CompilationPolicy::policy()->print_time(); | |
| 295 } | |
| 296 if (TimeOopMap) { | |
| 297 GenerateOopMap::print_time(); | |
| 298 } | |
| 299 if (ProfilerCheckIntervals) { | |
| 300 PeriodicTask::print_intervals(); | |
| 301 } | |
| 302 if (PrintSymbolTableSizeHistogram) { | |
| 303 SymbolTable::print_histogram(); | |
| 304 } | |
| 305 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
| 306 BytecodeCounter::print(); | |
| 307 } | |
| 308 if (PrintBytecodePairHistogram) { | |
| 309 BytecodePairHistogram::print(); | |
| 310 } | |
| 311 | |
| 312 if (PrintCodeCache) { | |
| 313 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 314 CodeCache::print(); | |
| 315 } | |
| 316 | |
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317 if (PrintMethodFlushingStatistics) { |
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318 NMethodSweeper::print(); |
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319 } |
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320 |
| 0 | 321 if (PrintCodeCache2) { |
| 322 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 323 CodeCache::print_internals(); | |
| 324 } | |
| 325 | |
| 326 if (PrintClassStatistics) { | |
| 327 SystemDictionary::print_class_statistics(); | |
| 328 } | |
| 329 if (PrintMethodStatistics) { | |
| 330 SystemDictionary::print_method_statistics(); | |
| 331 } | |
| 332 | |
| 333 if (PrintVtableStats) { | |
| 334 klassVtable::print_statistics(); | |
| 335 klassItable::print_statistics(); | |
| 336 } | |
| 337 if (VerifyOops) { | |
| 338 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); | |
| 339 } | |
| 340 | |
| 341 print_bytecode_count(); | |
| 2250 | 342 if (PrintMallocStatistics) { |
| 0 | 343 tty->print("allocation stats: "); |
| 344 alloc_stats.print(); | |
| 345 tty->cr(); | |
| 346 } | |
| 347 | |
| 348 if (PrintSystemDictionaryAtExit) { | |
| 349 SystemDictionary::print(); | |
| 350 } | |
| 351 | |
| 352 if (PrintBiasedLockingStatistics) { | |
| 353 BiasedLocking::print_counters(); | |
| 354 } | |
| 355 | |
| 356 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 357 #ifdef COMPILER2 | |
| 358 if (ZapDeadCompiledLocals) { | |
| 359 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); | |
| 360 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); | |
| 361 } | |
| 362 #endif // COMPILER2 | |
| 363 #endif // ENABLE_ZAP_DEAD_LOCALS | |
|
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364 // Native memory tracking data |
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365 if (PrintNMTStatistics) { |
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366 if (MemTracker::is_on()) { |
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367 BaselineTTYOutputer outputer(tty); |
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368 MemTracker::print_memory_usage(outputer, K, false); |
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369 } else { |
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370 tty->print_cr(MemTracker::reason()); |
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371 } |
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372 } |
| 0 | 373 } |
| 374 | |
| 375 #else // PRODUCT MODE STATISTICS | |
| 376 | |
| 377 void print_statistics() { | |
| 378 | |
| 379 if (CITime) { | |
| 380 CompileBroker::print_times(); | |
| 381 } | |
|
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382 |
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383 if (PrintCodeCache) { |
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384 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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385 CodeCache::print(); |
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386 } |
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387 |
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388 if (PrintMethodFlushingStatistics) { |
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389 NMethodSweeper::print(); |
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390 } |
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391 |
| 0 | 392 #ifdef COMPILER2 |
| 17780 | 393 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { |
| 0 | 394 OptoRuntime::print_named_counters(); |
| 395 } | |
| 396 #endif | |
| 397 if (PrintBiasedLockingStatistics) { | |
| 398 BiasedLocking::print_counters(); | |
| 399 } | |
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400 |
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401 // Native memory tracking data |
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402 if (PrintNMTStatistics) { |
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403 if (MemTracker::is_on()) { |
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404 BaselineTTYOutputer outputer(tty); |
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405 MemTracker::print_memory_usage(outputer, K, false); |
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406 } else { |
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407 tty->print_cr(MemTracker::reason()); |
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408 } |
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409 } |
| 0 | 410 } |
| 411 | |
| 412 #endif | |
| 413 | |
| 414 | |
| 415 // Helper class for registering on_exit calls through JVM_OnExit | |
| 416 | |
| 417 extern "C" { | |
| 418 typedef void (*__exit_proc)(void); | |
| 419 } | |
| 420 | |
| 6197 | 421 class ExitProc : public CHeapObj<mtInternal> { |
| 0 | 422 private: |
| 423 __exit_proc _proc; | |
| 424 // void (*_proc)(void); | |
| 425 ExitProc* _next; | |
| 426 public: | |
| 427 // ExitProc(void (*proc)(void)) { | |
| 428 ExitProc(__exit_proc proc) { | |
| 429 _proc = proc; | |
| 430 _next = NULL; | |
| 431 } | |
| 432 void evaluate() { _proc(); } | |
| 433 ExitProc* next() const { return _next; } | |
| 434 void set_next(ExitProc* next) { _next = next; } | |
| 435 }; | |
| 436 | |
| 437 | |
| 438 // Linked list of registered on_exit procedures | |
| 439 | |
| 440 static ExitProc* exit_procs = NULL; | |
| 441 | |
| 442 | |
| 443 extern "C" { | |
| 444 void register_on_exit_function(void (*func)(void)) { | |
| 445 ExitProc *entry = new ExitProc(func); | |
| 446 // Classic vm does not throw an exception in case the allocation failed, | |
| 447 if (entry != NULL) { | |
| 448 entry->set_next(exit_procs); | |
| 449 exit_procs = entry; | |
| 450 } | |
| 451 } | |
| 452 } | |
| 453 | |
| 454 // Note: before_exit() can be executed only once, if more than one threads | |
| 455 // are trying to shutdown the VM at the same time, only one thread | |
| 456 // can run before_exit() and all other threads must wait. | |
| 457 void before_exit(JavaThread * thread) { | |
| 458 #define BEFORE_EXIT_NOT_RUN 0 | |
| 459 #define BEFORE_EXIT_RUNNING 1 | |
| 460 #define BEFORE_EXIT_DONE 2 | |
| 461 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; | |
| 462 | |
| 463 // Note: don't use a Mutex to guard the entire before_exit(), as | |
| 464 // JVMTI post_thread_end_event and post_vm_death_event will run native code. | |
| 465 // A CAS or OSMutex would work just fine but then we need to manipulate | |
| 466 // thread state for Safepoint. Here we use Monitor wait() and notify_all() | |
| 467 // for synchronization. | |
| 468 { MutexLocker ml(BeforeExit_lock); | |
| 469 switch (_before_exit_status) { | |
| 470 case BEFORE_EXIT_NOT_RUN: | |
| 471 _before_exit_status = BEFORE_EXIT_RUNNING; | |
| 472 break; | |
| 473 case BEFORE_EXIT_RUNNING: | |
| 474 while (_before_exit_status == BEFORE_EXIT_RUNNING) { | |
| 475 BeforeExit_lock->wait(); | |
| 476 } | |
| 477 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); | |
| 478 return; | |
| 479 case BEFORE_EXIT_DONE: | |
| 480 return; | |
| 481 } | |
| 482 } | |
| 483 | |
| 484 // The only difference between this and Win32's _onexit procs is that | |
| 485 // this version is invoked before any threads get killed. | |
| 486 ExitProc* current = exit_procs; | |
| 487 while (current != NULL) { | |
| 488 ExitProc* next = current->next(); | |
| 489 current->evaluate(); | |
| 490 delete current; | |
| 491 current = next; | |
| 492 } | |
| 493 | |
| 494 // Hang forever on exit if we're reporting an error. | |
| 495 if (ShowMessageBoxOnError && is_error_reported()) { | |
| 496 os::infinite_sleep(); | |
| 497 } | |
| 498 | |
| 499 // Terminate watcher thread - must before disenrolling any periodic task | |
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500 if (PeriodicTask::num_tasks() > 0) |
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501 WatcherThread::stop(); |
| 0 | 502 |
| 503 // Print statistics gathered (profiling ...) | |
| 504 if (Arguments::has_profile()) { | |
| 505 FlatProfiler::disengage(); | |
| 506 FlatProfiler::print(10); | |
| 507 } | |
| 508 | |
| 509 // shut down the StatSampler task | |
| 510 StatSampler::disengage(); | |
| 511 StatSampler::destroy(); | |
| 512 | |
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513 // We do not need to explicitly stop concurrent GC threads because the |
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514 // JVM will be taken down at a safepoint when such threads are inactive -- |
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515 // except for some concurrent G1 threads, see (comment in) |
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516 // Threads::destroy_vm(). |
| 0 | 517 |
| 518 // Print GC/heap related information. | |
| 519 if (PrintGCDetails) { | |
| 520 Universe::print(); | |
| 521 AdaptiveSizePolicyOutput(0); | |
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522 if (Verbose) { |
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523 ClassLoaderDataGraph::dump_on(gclog_or_tty); |
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524 } |
| 0 | 525 } |
| 526 | |
| 527 if (PrintBytecodeHistogram) { | |
| 528 BytecodeHistogram::print(); | |
| 529 } | |
| 530 | |
| 531 if (JvmtiExport::should_post_thread_life()) { | |
| 532 JvmtiExport::post_thread_end(thread); | |
| 533 } | |
|
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534 |
| 10405 | 535 |
| 536 EventThreadEnd event; | |
| 537 if (event.should_commit()) { | |
| 538 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); | |
| 539 event.commit(); | |
| 540 } | |
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541 |
| 0 | 542 // Always call even when there are not JVMTI environments yet, since environments |
| 543 // may be attached late and JVMTI must track phases of VM execution | |
| 544 JvmtiExport::post_vm_death(); | |
| 545 Threads::shutdown_vm_agents(); | |
| 546 | |
| 547 // Terminate the signal thread | |
| 548 // Note: we don't wait until it actually dies. | |
| 549 os::terminate_signal_thread(); | |
| 550 | |
| 551 print_statistics(); | |
| 552 Universe::heap()->print_tracing_info(); | |
| 553 | |
| 554 { MutexLocker ml(BeforeExit_lock); | |
| 555 _before_exit_status = BEFORE_EXIT_DONE; | |
| 556 BeforeExit_lock->notify_all(); | |
| 557 } | |
| 558 | |
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559 // Shutdown NMT before exit. Otherwise, |
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560 // it will run into trouble when system destroys static variables. |
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561 MemTracker::shutdown(MemTracker::NMT_normal); |
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562 |
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563 if (VerifyStringTableAtExit) { |
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564 int fail_cnt = 0; |
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565 { |
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566 MutexLocker ml(StringTable_lock); |
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567 fail_cnt = StringTable::verify_and_compare_entries(); |
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568 } |
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569 |
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570 if (fail_cnt != 0) { |
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571 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); |
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572 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); |
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573 } |
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574 } |
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575 |
| 0 | 576 #undef BEFORE_EXIT_NOT_RUN |
| 577 #undef BEFORE_EXIT_RUNNING | |
| 578 #undef BEFORE_EXIT_DONE | |
| 579 } | |
| 580 | |
| 581 void vm_exit(int code) { | |
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582 Thread* thread = ThreadLocalStorage::is_initialized() ? |
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583 ThreadLocalStorage::get_thread_slow() : NULL; |
| 0 | 584 if (thread == NULL) { |
| 585 // we have serious problems -- just exit | |
| 586 vm_direct_exit(code); | |
| 587 } | |
| 588 | |
| 589 if (VMThread::vm_thread() != NULL) { | |
| 590 // Fire off a VM_Exit operation to bring VM to a safepoint and exit | |
| 591 VM_Exit op(code); | |
| 592 if (thread->is_Java_thread()) | |
| 593 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); | |
| 594 VMThread::execute(&op); | |
| 595 // should never reach here; but in case something wrong with VM Thread. | |
| 596 vm_direct_exit(code); | |
| 597 } else { | |
| 598 // VM thread is gone, just exit | |
| 599 vm_direct_exit(code); | |
| 600 } | |
| 601 ShouldNotReachHere(); | |
| 602 } | |
| 603 | |
| 604 void notify_vm_shutdown() { | |
| 605 // For now, just a dtrace probe. | |
| 4006 | 606 #ifndef USDT2 |
| 0 | 607 HS_DTRACE_PROBE(hotspot, vm__shutdown); |
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608 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); |
| 4006 | 609 #else /* USDT2 */ |
| 610 HOTSPOT_VM_SHUTDOWN(); | |
| 611 #endif /* USDT2 */ | |
| 0 | 612 } |
| 613 | |
| 614 void vm_direct_exit(int code) { | |
| 615 notify_vm_shutdown(); | |
|
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616 os::wait_for_keypress_at_exit(); |
| 0 | 617 ::exit(code); |
| 618 } | |
| 619 | |
| 620 void vm_perform_shutdown_actions() { | |
| 621 // Warning: do not call 'exit_globals()' here. All threads are still running. | |
| 622 // Calling 'exit_globals()' will disable thread-local-storage and cause all | |
| 623 // kinds of assertions to trigger in debug mode. | |
| 624 if (is_init_completed()) { | |
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625 Thread* thread = ThreadLocalStorage::is_initialized() ? |
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626 ThreadLocalStorage::get_thread_slow() : NULL; |
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627 if (thread != NULL && thread->is_Java_thread()) { |
| 0 | 628 // We are leaving the VM, set state to native (in case any OS exit |
| 629 // handlers call back to the VM) | |
| 630 JavaThread* jt = (JavaThread*)thread; | |
| 631 // Must always be walkable or have no last_Java_frame when in | |
| 632 // thread_in_native | |
| 633 jt->frame_anchor()->make_walkable(jt); | |
| 634 jt->set_thread_state(_thread_in_native); | |
| 635 } | |
| 636 } | |
| 637 notify_vm_shutdown(); | |
| 638 } | |
| 639 | |
| 640 void vm_shutdown() | |
| 641 { | |
| 642 vm_perform_shutdown_actions(); | |
|
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643 os::wait_for_keypress_at_exit(); |
| 0 | 644 os::shutdown(); |
| 645 } | |
| 646 | |
|
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647 void vm_abort(bool dump_core) { |
| 0 | 648 vm_perform_shutdown_actions(); |
|
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649 os::wait_for_keypress_at_exit(); |
|
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650 os::abort(dump_core); |
| 0 | 651 ShouldNotReachHere(); |
| 652 } | |
| 653 | |
| 654 void vm_notify_during_shutdown(const char* error, const char* message) { | |
| 655 if (error != NULL) { | |
| 656 tty->print_cr("Error occurred during initialization of VM"); | |
| 657 tty->print("%s", error); | |
| 658 if (message != NULL) { | |
| 659 tty->print_cr(": %s", message); | |
| 660 } | |
| 661 else { | |
| 662 tty->cr(); | |
| 663 } | |
| 664 } | |
| 665 if (ShowMessageBoxOnError && WizardMode) { | |
| 666 fatal("Error occurred during initialization of VM"); | |
| 667 } | |
| 668 } | |
| 669 | |
| 670 void vm_exit_during_initialization(Handle exception) { | |
| 671 tty->print_cr("Error occurred during initialization of VM"); | |
| 672 // If there are exceptions on this thread it must be cleared | |
| 673 // first and here. Any future calls to EXCEPTION_MARK requires | |
| 674 // that no pending exceptions exist. | |
| 675 Thread *THREAD = Thread::current(); | |
| 676 if (HAS_PENDING_EXCEPTION) { | |
| 677 CLEAR_PENDING_EXCEPTION; | |
| 678 } | |
| 679 java_lang_Throwable::print(exception, tty); | |
| 680 tty->cr(); | |
| 681 java_lang_Throwable::print_stack_trace(exception(), tty); | |
| 682 tty->cr(); | |
| 683 vm_notify_during_shutdown(NULL, NULL); | |
|
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684 |
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685 // Failure during initialization, we don't want to dump core |
|
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686 vm_abort(false); |
| 0 | 687 } |
| 688 | |
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689 void vm_exit_during_initialization(Symbol* ex, const char* message) { |
| 0 | 690 ResourceMark rm; |
| 691 vm_notify_during_shutdown(ex->as_C_string(), message); | |
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692 |
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693 // Failure during initialization, we don't want to dump core |
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694 vm_abort(false); |
| 0 | 695 } |
| 696 | |
| 697 void vm_exit_during_initialization(const char* error, const char* message) { | |
| 698 vm_notify_during_shutdown(error, message); | |
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699 |
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700 // Failure during initialization, we don't want to dump core |
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701 vm_abort(false); |
| 0 | 702 } |
| 703 | |
| 704 void vm_shutdown_during_initialization(const char* error, const char* message) { | |
| 705 vm_notify_during_shutdown(error, message); | |
| 706 vm_shutdown(); | |
| 707 } | |
| 708 | |
| 242 | 709 JDK_Version JDK_Version::_current; |
| 6181 | 710 const char* JDK_Version::_runtime_name; |
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711 const char* JDK_Version::_runtime_version; |
| 0 | 712 |
| 713 void JDK_Version::initialize() { | |
| 242 | 714 jdk_version_info info; |
| 715 assert(!_current.is_valid(), "Don't initialize twice"); | |
| 716 | |
| 0 | 717 void *lib_handle = os::native_java_library(); |
| 242 | 718 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, |
| 719 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); | |
| 0 | 720 |
| 721 if (func == NULL) { | |
| 722 // JDK older than 1.6 | |
| 242 | 723 _current._partially_initialized = true; |
| 724 } else { | |
| 725 (*func)(&info, sizeof(info)); | |
| 0 | 726 |
| 242 | 727 int major = JDK_VERSION_MAJOR(info.jdk_version); |
| 728 int minor = JDK_VERSION_MINOR(info.jdk_version); | |
| 729 int micro = JDK_VERSION_MICRO(info.jdk_version); | |
| 730 int build = JDK_VERSION_BUILD(info.jdk_version); | |
| 731 if (major == 1 && minor > 4) { | |
| 732 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. | |
| 733 major = minor; | |
| 734 minor = micro; | |
| 735 micro = 0; | |
| 736 } | |
| 737 _current = JDK_Version(major, minor, micro, info.update_version, | |
| 738 info.special_update_version, build, | |
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739 info.thread_park_blocker == 1, |
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740 info.post_vm_init_hook_enabled == 1, |
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741 info.pending_list_uses_discovered_field == 1); |
| 0 | 742 } |
| 242 | 743 } |
| 744 | |
| 745 void JDK_Version::fully_initialize( | |
| 746 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { | |
| 747 // This is only called when current is less than 1.6 and we've gotten | |
| 748 // far enough in the initialization to determine the exact version. | |
| 749 assert(major < 6, "not needed for JDK version >= 6"); | |
| 750 assert(is_partially_initialized(), "must not initialize"); | |
| 751 if (major < 5) { | |
| 752 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. | |
| 753 micro = minor; | |
| 754 minor = major; | |
| 755 major = 1; | |
| 0 | 756 } |
| 242 | 757 _current = JDK_Version(major, minor, micro, update); |
| 0 | 758 } |
| 759 | |
| 760 void JDK_Version_init() { | |
| 761 JDK_Version::initialize(); | |
| 762 } | |
| 242 | 763 |
| 764 static int64_t encode_jdk_version(const JDK_Version& v) { | |
| 765 return | |
| 766 ((int64_t)v.major_version() << (BitsPerByte * 5)) | | |
| 767 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | | |
| 768 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | | |
| 769 ((int64_t)v.update_version() << (BitsPerByte * 2)) | | |
| 770 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | | |
| 771 ((int64_t)v.build_number() << (BitsPerByte * 0)); | |
| 772 } | |
| 773 | |
| 774 int JDK_Version::compare(const JDK_Version& other) const { | |
| 775 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); | |
| 776 if (!is_partially_initialized() && other.is_partially_initialized()) { | |
| 777 return -(other.compare(*this)); // flip the comparators | |
| 778 } | |
| 779 assert(!other.is_partially_initialized(), "Not initialized yet"); | |
| 780 if (is_partially_initialized()) { | |
| 781 assert(other.major_version() >= 6, | |
| 782 "Invalid JDK version comparison during initialization"); | |
| 783 return -1; | |
| 784 } else { | |
| 785 uint64_t e = encode_jdk_version(*this); | |
| 786 uint64_t o = encode_jdk_version(other); | |
| 787 return (e > o) ? 1 : ((e == o) ? 0 : -1); | |
| 788 } | |
| 789 } | |
| 790 | |
| 791 void JDK_Version::to_string(char* buffer, size_t buflen) const { | |
| 792 size_t index = 0; | |
| 793 if (!is_valid()) { | |
| 794 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); | |
| 795 } else if (is_partially_initialized()) { | |
| 796 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); | |
| 797 } else { | |
| 798 index += jio_snprintf( | |
| 799 &buffer[index], buflen - index, "%d.%d", _major, _minor); | |
| 800 if (_micro > 0) { | |
| 801 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); | |
| 802 } | |
| 803 if (_update > 0) { | |
| 804 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); | |
| 805 } | |
| 806 if (_special > 0) { | |
| 807 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); | |
| 808 } | |
| 809 if (_build > 0) { | |
| 810 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); | |
| 811 } | |
| 812 } | |
| 813 } |