Mercurial > hg > truffle
annotate src/share/vm/runtime/java.cpp @ 10370:47bdfb3d010f
8015486: PSScavenge::is_obj_in_young is unnecessarily slow with UseCompressedOops
Summary: Compare compressed oops to a compressed young gen boundary instead of uncompressing the oops before doing the young gen boundary check.
Reviewed-by: brutisso, jmasa
author | stefank |
---|---|
date | Thu, 30 May 2013 10:58:16 +0200 |
parents | db9981fd3124 |
children | 5fc51c1ecdeb f2110083203d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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/aprofiler.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/biasedLocking.hpp" | |
48 #include "runtime/compilationPolicy.hpp" | |
49 #include "runtime/fprofiler.hpp" | |
50 #include "runtime/init.hpp" | |
51 #include "runtime/interfaceSupport.hpp" | |
52 #include "runtime/java.hpp" | |
53 #include "runtime/memprofiler.hpp" | |
54 #include "runtime/sharedRuntime.hpp" | |
55 #include "runtime/statSampler.hpp" | |
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" |
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63 #include "trace/traceEventTypes.hpp" |
1972 | 64 #include "utilities/dtrace.hpp" |
65 #include "utilities/globalDefinitions.hpp" | |
66 #include "utilities/histogram.hpp" | |
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67 #include "utilities/macros.hpp" |
1972 | 68 #include "utilities/vmError.hpp" |
69 #ifdef TARGET_ARCH_x86 | |
70 # include "vm_version_x86.hpp" | |
71 #endif | |
72 #ifdef TARGET_ARCH_sparc | |
73 # include "vm_version_sparc.hpp" | |
74 #endif | |
75 #ifdef TARGET_ARCH_zero | |
76 # include "vm_version_zero.hpp" | |
77 #endif | |
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78 #ifdef TARGET_ARCH_arm |
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79 # include "vm_version_arm.hpp" |
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80 #endif |
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81 #ifdef TARGET_ARCH_ppc |
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82 # include "vm_version_ppc.hpp" |
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83 #endif |
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84 #if INCLUDE_ALL_GCS |
1972 | 85 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" |
86 #include "gc_implementation/parallelScavenge/psScavenge.hpp" | |
87 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
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88 #endif // INCLUDE_ALL_GCS |
1972 | 89 #ifdef COMPILER1 |
90 #include "c1/c1_Compiler.hpp" | |
91 #include "c1/c1_Runtime1.hpp" | |
92 #endif | |
93 #ifdef COMPILER2 | |
94 #include "code/compiledIC.hpp" | |
95 #include "compiler/methodLiveness.hpp" | |
96 #include "opto/compile.hpp" | |
97 #include "opto/indexSet.hpp" | |
98 #include "opto/runtime.hpp" | |
99 #endif | |
0 | 100 |
4006 | 101 #ifndef USDT2 |
0 | 102 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); |
4006 | 103 #endif /* !USDT2 */ |
0 | 104 |
105 #ifndef PRODUCT | |
106 | |
107 // Statistics printing (method invocation histogram) | |
108 | |
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109 GrowableArray<Method*>* collected_invoked_methods; |
0 | 110 |
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111 void collect_invoked_methods(Method* m) { |
0 | 112 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { |
113 collected_invoked_methods->push(m); | |
114 } | |
115 } | |
116 | |
117 | |
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118 GrowableArray<Method*>* collected_profiled_methods; |
0 | 119 |
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120 void collect_profiled_methods(Method* m) { |
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121 Thread* thread = Thread::current(); |
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122 // This HandleMark prevents a huge amount of handles from being added |
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123 // to the metadata_handles() array on the thread. |
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124 HandleMark hm(thread); |
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125 methodHandle mh(thread, m); |
0 | 126 if ((m->method_data() != NULL) && |
127 (PrintMethodData || CompilerOracle::should_print(mh))) { | |
128 collected_profiled_methods->push(m); | |
129 } | |
130 } | |
131 | |
132 | |
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133 int compare_methods(Method** a, Method** b) { |
0 | 134 // %%% there can be 32-bit overflow here |
135 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) | |
136 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); | |
137 } | |
138 | |
139 | |
140 void print_method_invocation_histogram() { | |
141 ResourceMark rm; | |
142 HandleMark hm; | |
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143 collected_invoked_methods = new GrowableArray<Method*>(1024); |
0 | 144 SystemDictionary::methods_do(collect_invoked_methods); |
145 collected_invoked_methods->sort(&compare_methods); | |
146 // | |
147 tty->cr(); | |
148 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); | |
149 tty->cr(); | |
150 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); | |
151 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, | |
152 synch_total = 0, nativ_total = 0, acces_total = 0; | |
153 for (int index = 0; index < collected_invoked_methods->length(); index++) { | |
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154 Method* m = collected_invoked_methods->at(index); |
0 | 155 int c = m->invocation_count() + m->compiled_invocation_count(); |
156 if (c >= MethodHistogramCutoff) m->print_invocation_count(); | |
157 int_total += m->invocation_count(); | |
158 comp_total += m->compiled_invocation_count(); | |
159 if (m->is_final()) final_total += c; | |
160 if (m->is_static()) static_total += c; | |
161 if (m->is_synchronized()) synch_total += c; | |
162 if (m->is_native()) nativ_total += c; | |
163 if (m->is_accessor()) acces_total += c; | |
164 } | |
165 tty->cr(); | |
166 total = int_total + comp_total; | |
167 tty->print_cr("Invocations summary:"); | |
168 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); | |
169 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); | |
170 tty->print_cr("\t%9d (100%%) total", total); | |
171 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); | |
172 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); | |
173 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); | |
174 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); | |
175 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); | |
176 tty->cr(); | |
177 SharedRuntime::print_call_statistics(comp_total); | |
178 } | |
179 | |
180 void print_method_profiling_data() { | |
181 ResourceMark rm; | |
182 HandleMark hm; | |
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183 collected_profiled_methods = new GrowableArray<Method*>(1024); |
0 | 184 SystemDictionary::methods_do(collect_profiled_methods); |
185 collected_profiled_methods->sort(&compare_methods); | |
186 | |
187 int count = collected_profiled_methods->length(); | |
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(); | |
195 tty->cr(); | |
196 m->print_codes(); | |
197 } | |
198 tty->print_cr("------------------------------------------------------------------------"); | |
199 } | |
200 } | |
201 | |
202 void print_bytecode_count() { | |
203 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
204 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); | |
205 } | |
206 } | |
207 | |
208 AllocStats alloc_stats; | |
209 | |
210 | |
211 | |
212 // General statistics printing (profiling ...) | |
213 | |
214 void print_statistics() { | |
215 | |
216 #ifdef ASSERT | |
217 | |
218 if (CountRuntimeCalls) { | |
219 extern Histogram *RuntimeHistogram; | |
220 RuntimeHistogram->print(); | |
221 } | |
222 | |
223 if (CountJNICalls) { | |
224 extern Histogram *JNIHistogram; | |
225 JNIHistogram->print(); | |
226 } | |
227 | |
228 if (CountJVMCalls) { | |
229 extern Histogram *JVMHistogram; | |
230 JVMHistogram->print(); | |
231 } | |
232 | |
233 #endif | |
234 | |
235 if (MemProfiling) { | |
236 MemProfiler::disengage(); | |
237 } | |
238 | |
239 if (CITime) { | |
240 CompileBroker::print_times(); | |
241 } | |
242 | |
243 #ifdef COMPILER1 | |
244 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
245 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); | |
246 Runtime1::print_statistics(); | |
247 Deoptimization::print_statistics(); | |
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248 SharedRuntime::print_statistics(); |
0 | 249 nmethod::print_statistics(); |
250 } | |
251 #endif /* COMPILER1 */ | |
252 | |
253 #ifdef COMPILER2 | |
254 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
255 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); | |
256 Compile::print_statistics(); | |
257 #ifndef COMPILER1 | |
258 Deoptimization::print_statistics(); | |
259 nmethod::print_statistics(); | |
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260 SharedRuntime::print_statistics(); |
0 | 261 #endif //COMPILER1 |
262 os::print_statistics(); | |
263 } | |
264 | |
265 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) { | |
266 OptoRuntime::print_named_counters(); | |
267 } | |
268 | |
269 if (TimeLivenessAnalysis) { | |
270 MethodLiveness::print_times(); | |
271 } | |
272 #ifdef ASSERT | |
273 if (CollectIndexSetStatistics) { | |
274 IndexSet::print_statistics(); | |
275 } | |
276 #endif // ASSERT | |
277 #endif // COMPILER2 | |
278 if (CountCompiledCalls) { | |
279 print_method_invocation_histogram(); | |
280 } | |
1918 | 281 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { |
0 | 282 print_method_profiling_data(); |
283 } | |
284 if (TimeCompiler) { | |
285 COMPILER2_PRESENT(Compile::print_timers();) | |
286 } | |
287 if (TimeCompilationPolicy) { | |
288 CompilationPolicy::policy()->print_time(); | |
289 } | |
290 if (TimeOopMap) { | |
291 GenerateOopMap::print_time(); | |
292 } | |
293 if (ProfilerCheckIntervals) { | |
294 PeriodicTask::print_intervals(); | |
295 } | |
296 if (PrintSymbolTableSizeHistogram) { | |
297 SymbolTable::print_histogram(); | |
298 } | |
299 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
300 BytecodeCounter::print(); | |
301 } | |
302 if (PrintBytecodePairHistogram) { | |
303 BytecodePairHistogram::print(); | |
304 } | |
305 | |
306 if (PrintCodeCache) { | |
307 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
308 CodeCache::print(); | |
309 } | |
310 | |
311 if (PrintCodeCache2) { | |
312 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
313 CodeCache::print_internals(); | |
314 } | |
315 | |
316 if (PrintClassStatistics) { | |
317 SystemDictionary::print_class_statistics(); | |
318 } | |
319 if (PrintMethodStatistics) { | |
320 SystemDictionary::print_method_statistics(); | |
321 } | |
322 | |
323 if (PrintVtableStats) { | |
324 klassVtable::print_statistics(); | |
325 klassItable::print_statistics(); | |
326 } | |
327 if (VerifyOops) { | |
328 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); | |
329 } | |
330 | |
331 print_bytecode_count(); | |
2250 | 332 if (PrintMallocStatistics) { |
0 | 333 tty->print("allocation stats: "); |
334 alloc_stats.print(); | |
335 tty->cr(); | |
336 } | |
337 | |
338 if (PrintSystemDictionaryAtExit) { | |
339 SystemDictionary::print(); | |
340 } | |
341 | |
342 if (PrintBiasedLockingStatistics) { | |
343 BiasedLocking::print_counters(); | |
344 } | |
345 | |
346 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
347 #ifdef COMPILER2 | |
348 if (ZapDeadCompiledLocals) { | |
349 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); | |
350 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); | |
351 } | |
352 #endif // COMPILER2 | |
353 #endif // ENABLE_ZAP_DEAD_LOCALS | |
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354 // Native memory tracking data |
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355 if (PrintNMTStatistics) { |
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356 if (MemTracker::is_on()) { |
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357 BaselineTTYOutputer outputer(tty); |
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358 MemTracker::print_memory_usage(outputer, K, false); |
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359 } else { |
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360 tty->print_cr(MemTracker::reason()); |
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361 } |
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362 } |
0 | 363 } |
364 | |
365 #else // PRODUCT MODE STATISTICS | |
366 | |
367 void print_statistics() { | |
368 | |
369 if (CITime) { | |
370 CompileBroker::print_times(); | |
371 } | |
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372 |
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373 if (PrintCodeCache) { |
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374 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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375 CodeCache::print(); |
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376 } |
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377 |
0 | 378 #ifdef COMPILER2 |
379 if (PrintPreciseBiasedLockingStatistics) { | |
380 OptoRuntime::print_named_counters(); | |
381 } | |
382 #endif | |
383 if (PrintBiasedLockingStatistics) { | |
384 BiasedLocking::print_counters(); | |
385 } | |
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386 |
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387 // Native memory tracking data |
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388 if (PrintNMTStatistics) { |
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389 if (MemTracker::is_on()) { |
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390 BaselineTTYOutputer outputer(tty); |
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391 MemTracker::print_memory_usage(outputer, K, false); |
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392 } else { |
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393 tty->print_cr(MemTracker::reason()); |
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394 } |
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395 } |
0 | 396 } |
397 | |
398 #endif | |
399 | |
400 | |
401 // Helper class for registering on_exit calls through JVM_OnExit | |
402 | |
403 extern "C" { | |
404 typedef void (*__exit_proc)(void); | |
405 } | |
406 | |
6197 | 407 class ExitProc : public CHeapObj<mtInternal> { |
0 | 408 private: |
409 __exit_proc _proc; | |
410 // void (*_proc)(void); | |
411 ExitProc* _next; | |
412 public: | |
413 // ExitProc(void (*proc)(void)) { | |
414 ExitProc(__exit_proc proc) { | |
415 _proc = proc; | |
416 _next = NULL; | |
417 } | |
418 void evaluate() { _proc(); } | |
419 ExitProc* next() const { return _next; } | |
420 void set_next(ExitProc* next) { _next = next; } | |
421 }; | |
422 | |
423 | |
424 // Linked list of registered on_exit procedures | |
425 | |
426 static ExitProc* exit_procs = NULL; | |
427 | |
428 | |
429 extern "C" { | |
430 void register_on_exit_function(void (*func)(void)) { | |
431 ExitProc *entry = new ExitProc(func); | |
432 // Classic vm does not throw an exception in case the allocation failed, | |
433 if (entry != NULL) { | |
434 entry->set_next(exit_procs); | |
435 exit_procs = entry; | |
436 } | |
437 } | |
438 } | |
439 | |
440 // Note: before_exit() can be executed only once, if more than one threads | |
441 // are trying to shutdown the VM at the same time, only one thread | |
442 // can run before_exit() and all other threads must wait. | |
443 void before_exit(JavaThread * thread) { | |
444 #define BEFORE_EXIT_NOT_RUN 0 | |
445 #define BEFORE_EXIT_RUNNING 1 | |
446 #define BEFORE_EXIT_DONE 2 | |
447 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; | |
448 | |
449 // Note: don't use a Mutex to guard the entire before_exit(), as | |
450 // JVMTI post_thread_end_event and post_vm_death_event will run native code. | |
451 // A CAS or OSMutex would work just fine but then we need to manipulate | |
452 // thread state for Safepoint. Here we use Monitor wait() and notify_all() | |
453 // for synchronization. | |
454 { MutexLocker ml(BeforeExit_lock); | |
455 switch (_before_exit_status) { | |
456 case BEFORE_EXIT_NOT_RUN: | |
457 _before_exit_status = BEFORE_EXIT_RUNNING; | |
458 break; | |
459 case BEFORE_EXIT_RUNNING: | |
460 while (_before_exit_status == BEFORE_EXIT_RUNNING) { | |
461 BeforeExit_lock->wait(); | |
462 } | |
463 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); | |
464 return; | |
465 case BEFORE_EXIT_DONE: | |
466 return; | |
467 } | |
468 } | |
469 | |
470 // The only difference between this and Win32's _onexit procs is that | |
471 // this version is invoked before any threads get killed. | |
472 ExitProc* current = exit_procs; | |
473 while (current != NULL) { | |
474 ExitProc* next = current->next(); | |
475 current->evaluate(); | |
476 delete current; | |
477 current = next; | |
478 } | |
479 | |
480 // Hang forever on exit if we're reporting an error. | |
481 if (ShowMessageBoxOnError && is_error_reported()) { | |
482 os::infinite_sleep(); | |
483 } | |
484 | |
485 // Terminate watcher thread - must before disenrolling any periodic task | |
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486 if (PeriodicTask::num_tasks() > 0) |
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487 WatcherThread::stop(); |
0 | 488 |
489 // Print statistics gathered (profiling ...) | |
490 if (Arguments::has_profile()) { | |
491 FlatProfiler::disengage(); | |
492 FlatProfiler::print(10); | |
493 } | |
494 | |
495 // shut down the StatSampler task | |
496 StatSampler::disengage(); | |
497 StatSampler::destroy(); | |
498 | |
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499 // We do not need to explicitly stop concurrent GC threads because the |
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500 // JVM will be taken down at a safepoint when such threads are inactive -- |
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501 // except for some concurrent G1 threads, see (comment in) |
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502 // Threads::destroy_vm(). |
0 | 503 |
504 // Print GC/heap related information. | |
505 if (PrintGCDetails) { | |
506 Universe::print(); | |
507 AdaptiveSizePolicyOutput(0); | |
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508 if (Verbose) { |
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509 ClassLoaderDataGraph::dump_on(gclog_or_tty); |
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510 } |
0 | 511 } |
512 | |
513 | |
514 if (Arguments::has_alloc_profile()) { | |
515 HandleMark hm; | |
516 // Do one last collection to enumerate all the objects | |
517 // allocated since the last one. | |
518 Universe::heap()->collect(GCCause::_allocation_profiler); | |
519 AllocationProfiler::disengage(); | |
520 AllocationProfiler::print(0); | |
521 } | |
522 | |
523 if (PrintBytecodeHistogram) { | |
524 BytecodeHistogram::print(); | |
525 } | |
526 | |
527 if (JvmtiExport::should_post_thread_life()) { | |
528 JvmtiExport::post_thread_end(thread); | |
529 } | |
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530 |
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531 EVENT_BEGIN(TraceEventThreadEnd, event); |
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532 EVENT_COMMIT(event, |
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533 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj()))); |
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534 |
0 | 535 // Always call even when there are not JVMTI environments yet, since environments |
536 // may be attached late and JVMTI must track phases of VM execution | |
537 JvmtiExport::post_vm_death(); | |
538 Threads::shutdown_vm_agents(); | |
539 | |
540 // Terminate the signal thread | |
541 // Note: we don't wait until it actually dies. | |
542 os::terminate_signal_thread(); | |
543 | |
544 print_statistics(); | |
545 Universe::heap()->print_tracing_info(); | |
546 | |
547 { MutexLocker ml(BeforeExit_lock); | |
548 _before_exit_status = BEFORE_EXIT_DONE; | |
549 BeforeExit_lock->notify_all(); | |
550 } | |
551 | |
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552 // Shutdown NMT before exit. Otherwise, |
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553 // it will run into trouble when system destroys static variables. |
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554 MemTracker::shutdown(MemTracker::NMT_normal); |
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555 |
0 | 556 #undef BEFORE_EXIT_NOT_RUN |
557 #undef BEFORE_EXIT_RUNNING | |
558 #undef BEFORE_EXIT_DONE | |
559 } | |
560 | |
561 void vm_exit(int code) { | |
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562 Thread* thread = ThreadLocalStorage::is_initialized() ? |
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563 ThreadLocalStorage::get_thread_slow() : NULL; |
0 | 564 if (thread == NULL) { |
565 // we have serious problems -- just exit | |
566 vm_direct_exit(code); | |
567 } | |
568 | |
569 if (VMThread::vm_thread() != NULL) { | |
570 // Fire off a VM_Exit operation to bring VM to a safepoint and exit | |
571 VM_Exit op(code); | |
572 if (thread->is_Java_thread()) | |
573 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); | |
574 VMThread::execute(&op); | |
575 // should never reach here; but in case something wrong with VM Thread. | |
576 vm_direct_exit(code); | |
577 } else { | |
578 // VM thread is gone, just exit | |
579 vm_direct_exit(code); | |
580 } | |
581 ShouldNotReachHere(); | |
582 } | |
583 | |
584 void notify_vm_shutdown() { | |
585 // For now, just a dtrace probe. | |
4006 | 586 #ifndef USDT2 |
0 | 587 HS_DTRACE_PROBE(hotspot, vm__shutdown); |
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588 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); |
4006 | 589 #else /* USDT2 */ |
590 HOTSPOT_VM_SHUTDOWN(); | |
591 #endif /* USDT2 */ | |
0 | 592 } |
593 | |
594 void vm_direct_exit(int code) { | |
595 notify_vm_shutdown(); | |
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596 os::wait_for_keypress_at_exit(); |
0 | 597 ::exit(code); |
598 } | |
599 | |
600 void vm_perform_shutdown_actions() { | |
601 // Warning: do not call 'exit_globals()' here. All threads are still running. | |
602 // Calling 'exit_globals()' will disable thread-local-storage and cause all | |
603 // kinds of assertions to trigger in debug mode. | |
604 if (is_init_completed()) { | |
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605 Thread* thread = ThreadLocalStorage::is_initialized() ? |
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606 ThreadLocalStorage::get_thread_slow() : NULL; |
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607 if (thread != NULL && thread->is_Java_thread()) { |
0 | 608 // We are leaving the VM, set state to native (in case any OS exit |
609 // handlers call back to the VM) | |
610 JavaThread* jt = (JavaThread*)thread; | |
611 // Must always be walkable or have no last_Java_frame when in | |
612 // thread_in_native | |
613 jt->frame_anchor()->make_walkable(jt); | |
614 jt->set_thread_state(_thread_in_native); | |
615 } | |
616 } | |
617 notify_vm_shutdown(); | |
618 } | |
619 | |
620 void vm_shutdown() | |
621 { | |
622 vm_perform_shutdown_actions(); | |
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623 os::wait_for_keypress_at_exit(); |
0 | 624 os::shutdown(); |
625 } | |
626 | |
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627 void vm_abort(bool dump_core) { |
0 | 628 vm_perform_shutdown_actions(); |
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629 os::wait_for_keypress_at_exit(); |
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630 os::abort(dump_core); |
0 | 631 ShouldNotReachHere(); |
632 } | |
633 | |
634 void vm_notify_during_shutdown(const char* error, const char* message) { | |
635 if (error != NULL) { | |
636 tty->print_cr("Error occurred during initialization of VM"); | |
637 tty->print("%s", error); | |
638 if (message != NULL) { | |
639 tty->print_cr(": %s", message); | |
640 } | |
641 else { | |
642 tty->cr(); | |
643 } | |
644 } | |
645 if (ShowMessageBoxOnError && WizardMode) { | |
646 fatal("Error occurred during initialization of VM"); | |
647 } | |
648 } | |
649 | |
650 void vm_exit_during_initialization(Handle exception) { | |
651 tty->print_cr("Error occurred during initialization of VM"); | |
652 // If there are exceptions on this thread it must be cleared | |
653 // first and here. Any future calls to EXCEPTION_MARK requires | |
654 // that no pending exceptions exist. | |
655 Thread *THREAD = Thread::current(); | |
656 if (HAS_PENDING_EXCEPTION) { | |
657 CLEAR_PENDING_EXCEPTION; | |
658 } | |
659 java_lang_Throwable::print(exception, tty); | |
660 tty->cr(); | |
661 java_lang_Throwable::print_stack_trace(exception(), tty); | |
662 tty->cr(); | |
663 vm_notify_during_shutdown(NULL, NULL); | |
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664 |
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665 // Failure during initialization, we don't want to dump core |
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666 vm_abort(false); |
0 | 667 } |
668 | |
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669 void vm_exit_during_initialization(Symbol* ex, const char* message) { |
0 | 670 ResourceMark rm; |
671 vm_notify_during_shutdown(ex->as_C_string(), message); | |
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672 |
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673 // Failure during initialization, we don't want to dump core |
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674 vm_abort(false); |
0 | 675 } |
676 | |
677 void vm_exit_during_initialization(const char* error, const char* message) { | |
678 vm_notify_during_shutdown(error, message); | |
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679 |
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680 // Failure during initialization, we don't want to dump core |
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681 vm_abort(false); |
0 | 682 } |
683 | |
684 void vm_shutdown_during_initialization(const char* error, const char* message) { | |
685 vm_notify_during_shutdown(error, message); | |
686 vm_shutdown(); | |
687 } | |
688 | |
242 | 689 JDK_Version JDK_Version::_current; |
6181 | 690 const char* JDK_Version::_runtime_name; |
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691 const char* JDK_Version::_runtime_version; |
0 | 692 |
693 void JDK_Version::initialize() { | |
242 | 694 jdk_version_info info; |
695 assert(!_current.is_valid(), "Don't initialize twice"); | |
696 | |
0 | 697 void *lib_handle = os::native_java_library(); |
242 | 698 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, |
699 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); | |
0 | 700 |
701 if (func == NULL) { | |
702 // JDK older than 1.6 | |
242 | 703 _current._partially_initialized = true; |
704 } else { | |
705 (*func)(&info, sizeof(info)); | |
0 | 706 |
242 | 707 int major = JDK_VERSION_MAJOR(info.jdk_version); |
708 int minor = JDK_VERSION_MINOR(info.jdk_version); | |
709 int micro = JDK_VERSION_MICRO(info.jdk_version); | |
710 int build = JDK_VERSION_BUILD(info.jdk_version); | |
711 if (major == 1 && minor > 4) { | |
712 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. | |
713 major = minor; | |
714 minor = micro; | |
715 micro = 0; | |
716 } | |
717 _current = JDK_Version(major, minor, micro, info.update_version, | |
718 info.special_update_version, build, | |
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719 info.thread_park_blocker == 1, |
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720 info.post_vm_init_hook_enabled == 1, |
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721 info.pending_list_uses_discovered_field == 1); |
0 | 722 } |
242 | 723 } |
724 | |
725 void JDK_Version::fully_initialize( | |
726 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { | |
727 // This is only called when current is less than 1.6 and we've gotten | |
728 // far enough in the initialization to determine the exact version. | |
729 assert(major < 6, "not needed for JDK version >= 6"); | |
730 assert(is_partially_initialized(), "must not initialize"); | |
731 if (major < 5) { | |
732 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. | |
733 micro = minor; | |
734 minor = major; | |
735 major = 1; | |
0 | 736 } |
242 | 737 _current = JDK_Version(major, minor, micro, update); |
0 | 738 } |
739 | |
740 void JDK_Version_init() { | |
741 JDK_Version::initialize(); | |
742 } | |
242 | 743 |
744 static int64_t encode_jdk_version(const JDK_Version& v) { | |
745 return | |
746 ((int64_t)v.major_version() << (BitsPerByte * 5)) | | |
747 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | | |
748 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | | |
749 ((int64_t)v.update_version() << (BitsPerByte * 2)) | | |
750 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | | |
751 ((int64_t)v.build_number() << (BitsPerByte * 0)); | |
752 } | |
753 | |
754 int JDK_Version::compare(const JDK_Version& other) const { | |
755 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); | |
756 if (!is_partially_initialized() && other.is_partially_initialized()) { | |
757 return -(other.compare(*this)); // flip the comparators | |
758 } | |
759 assert(!other.is_partially_initialized(), "Not initialized yet"); | |
760 if (is_partially_initialized()) { | |
761 assert(other.major_version() >= 6, | |
762 "Invalid JDK version comparison during initialization"); | |
763 return -1; | |
764 } else { | |
765 uint64_t e = encode_jdk_version(*this); | |
766 uint64_t o = encode_jdk_version(other); | |
767 return (e > o) ? 1 : ((e == o) ? 0 : -1); | |
768 } | |
769 } | |
770 | |
771 void JDK_Version::to_string(char* buffer, size_t buflen) const { | |
772 size_t index = 0; | |
773 if (!is_valid()) { | |
774 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); | |
775 } else if (is_partially_initialized()) { | |
776 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); | |
777 } else { | |
778 index += jio_snprintf( | |
779 &buffer[index], buflen - index, "%d.%d", _major, _minor); | |
780 if (_micro > 0) { | |
781 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); | |
782 } | |
783 if (_update > 0) { | |
784 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); | |
785 } | |
786 if (_special > 0) { | |
787 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); | |
788 } | |
789 if (_build > 0) { | |
790 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); | |
791 } | |
792 } | |
793 } |