Mercurial > hg > truffle
annotate src/share/vm/runtime/java.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | d8041d695d19 |
children | 4ca6dc0799b6 |
rev | line source |
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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" | |
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33 #ifdef GRAAL |
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34 #include "graal/graalCompiler.hpp" |
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35 #endif |
1972 | 36 #include "memory/genCollectedHeap.hpp" |
37 #include "memory/oopFactory.hpp" | |
38 #include "memory/universe.hpp" | |
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39 #include "oops/constantPool.hpp" |
1972 | 40 #include "oops/generateOopMap.hpp" |
41 #include "oops/instanceKlass.hpp" | |
42 #include "oops/instanceOop.hpp" | |
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43 #include "oops/method.hpp" |
1972 | 44 #include "oops/objArrayOop.hpp" |
45 #include "oops/oop.inline.hpp" | |
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46 #include "oops/symbol.hpp" |
1972 | 47 #include "prims/jvmtiExport.hpp" |
48 #include "runtime/arguments.hpp" | |
49 #include "runtime/biasedLocking.hpp" | |
50 #include "runtime/compilationPolicy.hpp" | |
51 #include "runtime/fprofiler.hpp" | |
52 #include "runtime/init.hpp" | |
53 #include "runtime/interfaceSupport.hpp" | |
54 #include "runtime/java.hpp" | |
55 #include "runtime/memprofiler.hpp" | |
56 #include "runtime/sharedRuntime.hpp" | |
57 #include "runtime/statSampler.hpp" | |
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58 #include "runtime/sweeper.hpp" |
1972 | 59 #include "runtime/task.hpp" |
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60 #include "runtime/thread.inline.hpp" |
1972 | 61 #include "runtime/timer.hpp" |
62 #include "runtime/vm_operations.hpp" | |
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63 #include "services/memReporter.hpp" |
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64 #include "services/memTracker.hpp" |
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65 #include "trace/tracing.hpp" |
1972 | 66 #include "utilities/dtrace.hpp" |
67 #include "utilities/globalDefinitions.hpp" | |
68 #include "utilities/histogram.hpp" | |
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69 #include "utilities/macros.hpp" |
1972 | 70 #include "utilities/vmError.hpp" |
71 #ifdef TARGET_ARCH_x86 | |
72 # include "vm_version_x86.hpp" | |
73 #endif | |
74 #ifdef TARGET_ARCH_sparc | |
75 # include "vm_version_sparc.hpp" | |
76 #endif | |
77 #ifdef TARGET_ARCH_zero | |
78 # include "vm_version_zero.hpp" | |
79 #endif | |
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80 #ifdef TARGET_ARCH_arm |
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81 # include "vm_version_arm.hpp" |
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82 #endif |
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83 #ifdef TARGET_ARCH_ppc |
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84 # include "vm_version_ppc.hpp" |
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85 #endif |
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86 #if INCLUDE_ALL_GCS |
1972 | 87 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" |
88 #include "gc_implementation/parallelScavenge/psScavenge.hpp" | |
89 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
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90 #endif // INCLUDE_ALL_GCS |
1972 | 91 #ifdef COMPILER1 |
92 #include "c1/c1_Compiler.hpp" | |
93 #include "c1/c1_Runtime1.hpp" | |
94 #endif | |
95 #ifdef COMPILER2 | |
96 #include "code/compiledIC.hpp" | |
97 #include "compiler/methodLiveness.hpp" | |
98 #include "opto/compile.hpp" | |
99 #include "opto/indexSet.hpp" | |
100 #include "opto/runtime.hpp" | |
101 #endif | |
0 | 102 |
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 } |
256 #endif /* COMPILER1 */ | |
257 | |
258 #ifdef COMPILER2 | |
259 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
260 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); | |
261 Compile::print_statistics(); | |
262 #ifndef COMPILER1 | |
263 Deoptimization::print_statistics(); | |
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264 SharedRuntime::print_statistics(); |
0 | 265 #endif //COMPILER1 |
266 os::print_statistics(); | |
267 } | |
268 | |
269 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) { | |
270 OptoRuntime::print_named_counters(); | |
271 } | |
272 | |
273 if (TimeLivenessAnalysis) { | |
274 MethodLiveness::print_times(); | |
275 } | |
276 #ifdef ASSERT | |
277 if (CollectIndexSetStatistics) { | |
278 IndexSet::print_statistics(); | |
279 } | |
280 #endif // ASSERT | |
281 #endif // COMPILER2 | |
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282 |
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283 if (PrintNMethodStatistics) { |
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284 nmethod::print_statistics(); |
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285 } |
0 | 286 if (CountCompiledCalls) { |
287 print_method_invocation_histogram(); | |
288 } | |
1918 | 289 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { |
0 | 290 print_method_profiling_data(); |
291 } | |
292 if (TimeCompiler) { | |
293 COMPILER2_PRESENT(Compile::print_timers();) | |
294 } | |
295 if (TimeCompilationPolicy) { | |
296 CompilationPolicy::policy()->print_time(); | |
297 } | |
298 if (TimeOopMap) { | |
299 GenerateOopMap::print_time(); | |
300 } | |
301 if (ProfilerCheckIntervals) { | |
302 PeriodicTask::print_intervals(); | |
303 } | |
304 if (PrintSymbolTableSizeHistogram) { | |
305 SymbolTable::print_histogram(); | |
306 } | |
307 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
308 BytecodeCounter::print(); | |
309 } | |
310 if (PrintBytecodePairHistogram) { | |
311 BytecodePairHistogram::print(); | |
312 } | |
313 | |
314 if (PrintCodeCache) { | |
315 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
316 CodeCache::print(); | |
317 } | |
318 | |
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319 if (PrintMethodFlushingStatistics) { |
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320 NMethodSweeper::print(); |
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321 } |
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322 |
0 | 323 if (PrintCodeCache2) { |
324 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
325 CodeCache::print_internals(); | |
326 } | |
327 | |
328 if (PrintClassStatistics) { | |
329 SystemDictionary::print_class_statistics(); | |
330 } | |
331 if (PrintMethodStatistics) { | |
332 SystemDictionary::print_method_statistics(); | |
333 } | |
334 | |
335 if (PrintVtableStats) { | |
336 klassVtable::print_statistics(); | |
337 klassItable::print_statistics(); | |
338 } | |
339 if (VerifyOops) { | |
340 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); | |
341 } | |
342 | |
343 print_bytecode_count(); | |
2250 | 344 if (PrintMallocStatistics) { |
0 | 345 tty->print("allocation stats: "); |
346 alloc_stats.print(); | |
347 tty->cr(); | |
348 } | |
349 | |
350 if (PrintSystemDictionaryAtExit) { | |
351 SystemDictionary::print(); | |
352 } | |
353 | |
354 if (PrintBiasedLockingStatistics) { | |
355 BiasedLocking::print_counters(); | |
356 } | |
357 | |
358 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
359 #ifdef COMPILER2 | |
360 if (ZapDeadCompiledLocals) { | |
361 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); | |
362 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); | |
363 } | |
364 #endif // COMPILER2 | |
365 #endif // ENABLE_ZAP_DEAD_LOCALS | |
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366 // Native memory tracking data |
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367 if (PrintNMTStatistics) { |
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368 if (MemTracker::is_on()) { |
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369 BaselineTTYOutputer outputer(tty); |
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370 MemTracker::print_memory_usage(outputer, K, false); |
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371 } else { |
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372 tty->print_cr(MemTracker::reason()); |
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373 } |
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374 } |
0 | 375 } |
376 | |
377 #else // PRODUCT MODE STATISTICS | |
378 | |
379 void print_statistics() { | |
380 | |
381 if (CITime) { | |
382 CompileBroker::print_times(); | |
383 } | |
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384 |
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385 if (PrintCodeCache) { |
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386 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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387 CodeCache::print(); |
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388 } |
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389 |
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390 if (PrintMethodFlushingStatistics) { |
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391 NMethodSweeper::print(); |
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392 } |
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393 |
0 | 394 #ifdef COMPILER2 |
395 if (PrintPreciseBiasedLockingStatistics) { | |
396 OptoRuntime::print_named_counters(); | |
397 } | |
398 #endif | |
399 if (PrintBiasedLockingStatistics) { | |
400 BiasedLocking::print_counters(); | |
401 } | |
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402 if (PrintNMethodStatistics) { |
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403 nmethod::print_statistics(); |
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404 } |
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405 |
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406 // Native memory tracking data |
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407 if (PrintNMTStatistics) { |
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408 if (MemTracker::is_on()) { |
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409 BaselineTTYOutputer outputer(tty); |
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410 MemTracker::print_memory_usage(outputer, K, false); |
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411 } else { |
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412 tty->print_cr(MemTracker::reason()); |
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413 } |
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414 } |
0 | 415 } |
416 | |
417 #endif | |
418 | |
419 | |
420 // Helper class for registering on_exit calls through JVM_OnExit | |
421 | |
422 extern "C" { | |
423 typedef void (*__exit_proc)(void); | |
424 } | |
425 | |
6197 | 426 class ExitProc : public CHeapObj<mtInternal> { |
0 | 427 private: |
428 __exit_proc _proc; | |
429 // void (*_proc)(void); | |
430 ExitProc* _next; | |
431 public: | |
432 // ExitProc(void (*proc)(void)) { | |
433 ExitProc(__exit_proc proc) { | |
434 _proc = proc; | |
435 _next = NULL; | |
436 } | |
437 void evaluate() { _proc(); } | |
438 ExitProc* next() const { return _next; } | |
439 void set_next(ExitProc* next) { _next = next; } | |
440 }; | |
441 | |
442 | |
443 // Linked list of registered on_exit procedures | |
444 | |
445 static ExitProc* exit_procs = NULL; | |
446 | |
447 | |
448 extern "C" { | |
449 void register_on_exit_function(void (*func)(void)) { | |
450 ExitProc *entry = new ExitProc(func); | |
451 // Classic vm does not throw an exception in case the allocation failed, | |
452 if (entry != NULL) { | |
453 entry->set_next(exit_procs); | |
454 exit_procs = entry; | |
455 } | |
456 } | |
457 } | |
458 | |
459 // Note: before_exit() can be executed only once, if more than one threads | |
460 // are trying to shutdown the VM at the same time, only one thread | |
461 // can run before_exit() and all other threads must wait. | |
462 void before_exit(JavaThread * thread) { | |
463 #define BEFORE_EXIT_NOT_RUN 0 | |
464 #define BEFORE_EXIT_RUNNING 1 | |
465 #define BEFORE_EXIT_DONE 2 | |
466 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; | |
467 | |
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468 #ifdef GRAAL |
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469 if (GraalCompiler::instance() != NULL) { |
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470 GraalCompiler::instance()->exit(); |
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471 } |
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472 #endif |
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473 |
0 | 474 // Note: don't use a Mutex to guard the entire before_exit(), as |
475 // JVMTI post_thread_end_event and post_vm_death_event will run native code. | |
476 // A CAS or OSMutex would work just fine but then we need to manipulate | |
477 // thread state for Safepoint. Here we use Monitor wait() and notify_all() | |
478 // for synchronization. | |
479 { MutexLocker ml(BeforeExit_lock); | |
480 switch (_before_exit_status) { | |
481 case BEFORE_EXIT_NOT_RUN: | |
482 _before_exit_status = BEFORE_EXIT_RUNNING; | |
483 break; | |
484 case BEFORE_EXIT_RUNNING: | |
485 while (_before_exit_status == BEFORE_EXIT_RUNNING) { | |
486 BeforeExit_lock->wait(); | |
487 } | |
488 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); | |
489 return; | |
490 case BEFORE_EXIT_DONE: | |
491 return; | |
492 } | |
493 } | |
494 | |
495 // The only difference between this and Win32's _onexit procs is that | |
496 // this version is invoked before any threads get killed. | |
497 ExitProc* current = exit_procs; | |
498 while (current != NULL) { | |
499 ExitProc* next = current->next(); | |
500 current->evaluate(); | |
501 delete current; | |
502 current = next; | |
503 } | |
504 | |
505 // Hang forever on exit if we're reporting an error. | |
506 if (ShowMessageBoxOnError && is_error_reported()) { | |
507 os::infinite_sleep(); | |
508 } | |
509 | |
510 // Terminate watcher thread - must before disenrolling any periodic task | |
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511 if (PeriodicTask::num_tasks() > 0) |
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512 WatcherThread::stop(); |
0 | 513 |
514 // Print statistics gathered (profiling ...) | |
515 if (Arguments::has_profile()) { | |
516 FlatProfiler::disengage(); | |
517 FlatProfiler::print(10); | |
518 } | |
519 | |
520 // shut down the StatSampler task | |
521 StatSampler::disengage(); | |
522 StatSampler::destroy(); | |
523 | |
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524 // We do not need to explicitly stop concurrent GC threads because the |
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525 // JVM will be taken down at a safepoint when such threads are inactive -- |
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526 // except for some concurrent G1 threads, see (comment in) |
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527 // Threads::destroy_vm(). |
0 | 528 |
529 // Print GC/heap related information. | |
530 if (PrintGCDetails) { | |
531 Universe::print(); | |
532 AdaptiveSizePolicyOutput(0); | |
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533 if (Verbose) { |
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534 ClassLoaderDataGraph::dump_on(gclog_or_tty); |
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535 } |
0 | 536 } |
537 | |
538 if (PrintBytecodeHistogram) { | |
539 BytecodeHistogram::print(); | |
540 } | |
541 | |
542 if (JvmtiExport::should_post_thread_life()) { | |
543 JvmtiExport::post_thread_end(thread); | |
544 } | |
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545 |
10405 | 546 |
547 EventThreadEnd event; | |
548 if (event.should_commit()) { | |
549 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); | |
550 event.commit(); | |
551 } | |
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552 |
0 | 553 // Always call even when there are not JVMTI environments yet, since environments |
554 // may be attached late and JVMTI must track phases of VM execution | |
555 JvmtiExport::post_vm_death(); | |
556 Threads::shutdown_vm_agents(); | |
557 | |
558 // Terminate the signal thread | |
559 // Note: we don't wait until it actually dies. | |
560 os::terminate_signal_thread(); | |
561 | |
562 print_statistics(); | |
563 Universe::heap()->print_tracing_info(); | |
564 | |
565 { MutexLocker ml(BeforeExit_lock); | |
566 _before_exit_status = BEFORE_EXIT_DONE; | |
567 BeforeExit_lock->notify_all(); | |
568 } | |
569 | |
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570 // Shutdown NMT before exit. Otherwise, |
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571 // it will run into trouble when system destroys static variables. |
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572 MemTracker::shutdown(MemTracker::NMT_normal); |
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573 |
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574 if (VerifyStringTableAtExit) { |
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575 int fail_cnt = 0; |
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576 { |
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577 MutexLocker ml(StringTable_lock); |
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578 fail_cnt = StringTable::verify_and_compare_entries(); |
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579 } |
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580 |
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581 if (fail_cnt != 0) { |
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582 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); |
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583 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); |
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584 } |
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585 } |
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586 |
0 | 587 #undef BEFORE_EXIT_NOT_RUN |
588 #undef BEFORE_EXIT_RUNNING | |
589 #undef BEFORE_EXIT_DONE | |
590 } | |
591 | |
592 void vm_exit(int code) { | |
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593 Thread* thread = ThreadLocalStorage::is_initialized() ? |
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594 ThreadLocalStorage::get_thread_slow() : NULL; |
0 | 595 if (thread == NULL) { |
596 // we have serious problems -- just exit | |
597 vm_direct_exit(code); | |
598 } | |
599 | |
600 if (VMThread::vm_thread() != NULL) { | |
601 // Fire off a VM_Exit operation to bring VM to a safepoint and exit | |
602 VM_Exit op(code); | |
603 if (thread->is_Java_thread()) | |
604 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); | |
605 VMThread::execute(&op); | |
606 // should never reach here; but in case something wrong with VM Thread. | |
607 vm_direct_exit(code); | |
608 } else { | |
609 // VM thread is gone, just exit | |
610 vm_direct_exit(code); | |
611 } | |
612 ShouldNotReachHere(); | |
613 } | |
614 | |
615 void notify_vm_shutdown() { | |
616 // For now, just a dtrace probe. | |
4006 | 617 HOTSPOT_VM_SHUTDOWN(); |
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618 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); |
0 | 619 } |
620 | |
621 void vm_direct_exit(int code) { | |
622 notify_vm_shutdown(); | |
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623 os::wait_for_keypress_at_exit(); |
0 | 624 ::exit(code); |
625 } | |
626 | |
627 void vm_perform_shutdown_actions() { | |
628 // Warning: do not call 'exit_globals()' here. All threads are still running. | |
629 // Calling 'exit_globals()' will disable thread-local-storage and cause all | |
630 // kinds of assertions to trigger in debug mode. | |
631 if (is_init_completed()) { | |
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632 Thread* thread = ThreadLocalStorage::is_initialized() ? |
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633 ThreadLocalStorage::get_thread_slow() : NULL; |
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634 if (thread != NULL && thread->is_Java_thread()) { |
0 | 635 // We are leaving the VM, set state to native (in case any OS exit |
636 // handlers call back to the VM) | |
637 JavaThread* jt = (JavaThread*)thread; | |
638 // Must always be walkable or have no last_Java_frame when in | |
639 // thread_in_native | |
640 jt->frame_anchor()->make_walkable(jt); | |
641 jt->set_thread_state(_thread_in_native); | |
642 } | |
643 } | |
644 notify_vm_shutdown(); | |
645 } | |
646 | |
647 void vm_shutdown() | |
648 { | |
649 vm_perform_shutdown_actions(); | |
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650 os::wait_for_keypress_at_exit(); |
0 | 651 os::shutdown(); |
652 } | |
653 | |
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654 void vm_abort(bool dump_core) { |
0 | 655 vm_perform_shutdown_actions(); |
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656 os::wait_for_keypress_at_exit(); |
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657 os::abort(dump_core); |
0 | 658 ShouldNotReachHere(); |
659 } | |
660 | |
661 void vm_notify_during_shutdown(const char* error, const char* message) { | |
662 if (error != NULL) { | |
663 tty->print_cr("Error occurred during initialization of VM"); | |
664 tty->print("%s", error); | |
665 if (message != NULL) { | |
666 tty->print_cr(": %s", message); | |
667 } | |
668 else { | |
669 tty->cr(); | |
670 } | |
671 } | |
672 if (ShowMessageBoxOnError && WizardMode) { | |
673 fatal("Error occurred during initialization of VM"); | |
674 } | |
675 } | |
676 | |
677 void vm_exit_during_initialization(Handle exception) { | |
678 tty->print_cr("Error occurred during initialization of VM"); | |
679 // If there are exceptions on this thread it must be cleared | |
680 // first and here. Any future calls to EXCEPTION_MARK requires | |
681 // that no pending exceptions exist. | |
682 Thread *THREAD = Thread::current(); | |
683 if (HAS_PENDING_EXCEPTION) { | |
684 CLEAR_PENDING_EXCEPTION; | |
685 } | |
686 java_lang_Throwable::print(exception, tty); | |
687 tty->cr(); | |
688 java_lang_Throwable::print_stack_trace(exception(), tty); | |
689 tty->cr(); | |
690 vm_notify_during_shutdown(NULL, NULL); | |
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691 |
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692 // Failure during initialization, we don't want to dump core |
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693 vm_abort(false); |
0 | 694 } |
695 | |
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696 void vm_exit_during_initialization(Symbol* ex, const char* message) { |
0 | 697 ResourceMark rm; |
698 vm_notify_during_shutdown(ex->as_C_string(), 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_exit_during_initialization(const char* error, const char* message) { | |
705 vm_notify_during_shutdown(error, message); | |
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706 |
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707 // Failure during initialization, we don't want to dump core |
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708 vm_abort(false); |
0 | 709 } |
710 | |
711 void vm_shutdown_during_initialization(const char* error, const char* message) { | |
712 vm_notify_during_shutdown(error, message); | |
713 vm_shutdown(); | |
714 } | |
715 | |
242 | 716 JDK_Version JDK_Version::_current; |
6181 | 717 const char* JDK_Version::_runtime_name; |
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718 const char* JDK_Version::_runtime_version; |
0 | 719 |
720 void JDK_Version::initialize() { | |
242 | 721 jdk_version_info info; |
722 assert(!_current.is_valid(), "Don't initialize twice"); | |
723 | |
0 | 724 void *lib_handle = os::native_java_library(); |
242 | 725 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, |
726 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); | |
0 | 727 |
728 if (func == NULL) { | |
729 // JDK older than 1.6 | |
242 | 730 _current._partially_initialized = true; |
731 } else { | |
732 (*func)(&info, sizeof(info)); | |
0 | 733 |
242 | 734 int major = JDK_VERSION_MAJOR(info.jdk_version); |
735 int minor = JDK_VERSION_MINOR(info.jdk_version); | |
736 int micro = JDK_VERSION_MICRO(info.jdk_version); | |
737 int build = JDK_VERSION_BUILD(info.jdk_version); | |
738 if (major == 1 && minor > 4) { | |
739 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. | |
740 major = minor; | |
741 minor = micro; | |
742 micro = 0; | |
743 } | |
744 _current = JDK_Version(major, minor, micro, info.update_version, | |
745 info.special_update_version, build, | |
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746 info.thread_park_blocker == 1, |
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747 info.post_vm_init_hook_enabled == 1, |
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748 info.pending_list_uses_discovered_field == 1); |
0 | 749 } |
242 | 750 } |
751 | |
752 void JDK_Version::fully_initialize( | |
753 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { | |
754 // This is only called when current is less than 1.6 and we've gotten | |
755 // far enough in the initialization to determine the exact version. | |
756 assert(major < 6, "not needed for JDK version >= 6"); | |
757 assert(is_partially_initialized(), "must not initialize"); | |
758 if (major < 5) { | |
759 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. | |
760 micro = minor; | |
761 minor = major; | |
762 major = 1; | |
0 | 763 } |
242 | 764 _current = JDK_Version(major, minor, micro, update); |
0 | 765 } |
766 | |
767 void JDK_Version_init() { | |
768 JDK_Version::initialize(); | |
769 } | |
242 | 770 |
771 static int64_t encode_jdk_version(const JDK_Version& v) { | |
772 return | |
773 ((int64_t)v.major_version() << (BitsPerByte * 5)) | | |
774 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | | |
775 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | | |
776 ((int64_t)v.update_version() << (BitsPerByte * 2)) | | |
777 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | | |
778 ((int64_t)v.build_number() << (BitsPerByte * 0)); | |
779 } | |
780 | |
781 int JDK_Version::compare(const JDK_Version& other) const { | |
782 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); | |
783 if (!is_partially_initialized() && other.is_partially_initialized()) { | |
784 return -(other.compare(*this)); // flip the comparators | |
785 } | |
786 assert(!other.is_partially_initialized(), "Not initialized yet"); | |
787 if (is_partially_initialized()) { | |
788 assert(other.major_version() >= 6, | |
789 "Invalid JDK version comparison during initialization"); | |
790 return -1; | |
791 } else { | |
792 uint64_t e = encode_jdk_version(*this); | |
793 uint64_t o = encode_jdk_version(other); | |
794 return (e > o) ? 1 : ((e == o) ? 0 : -1); | |
795 } | |
796 } | |
797 | |
798 void JDK_Version::to_string(char* buffer, size_t buflen) const { | |
799 size_t index = 0; | |
800 if (!is_valid()) { | |
801 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); | |
802 } else if (is_partially_initialized()) { | |
803 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); | |
804 } else { | |
805 index += jio_snprintf( | |
806 &buffer[index], buflen - index, "%d.%d", _major, _minor); | |
807 if (_micro > 0) { | |
808 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); | |
809 } | |
810 if (_update > 0) { | |
811 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); | |
812 } | |
813 if (_special > 0) { | |
814 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); | |
815 } | |
816 if (_build > 0) { | |
817 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); | |
818 } | |
819 } | |
820 } |