Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/java.cpp @ 878:abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
Summary: JVM_FindClassFromBootLoader returns null if class not found
Reviewed-by: acorn, alanb, dholmes
author | mchung |
---|---|
date | Mon, 27 Jul 2009 09:06:22 -0700 |
parents | d95b224e9f17 |
children | fb1a39993f69 |
rev | line source |
---|---|
0 | 1 /* |
196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_java.cpp.incl" | |
27 | |
28 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); | |
29 | |
30 #ifndef PRODUCT | |
31 | |
32 // Statistics printing (method invocation histogram) | |
33 | |
34 GrowableArray<methodOop>* collected_invoked_methods; | |
35 | |
36 void collect_invoked_methods(methodOop m) { | |
37 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { | |
38 collected_invoked_methods->push(m); | |
39 } | |
40 } | |
41 | |
42 | |
43 GrowableArray<methodOop>* collected_profiled_methods; | |
44 | |
45 void collect_profiled_methods(methodOop m) { | |
46 methodHandle mh(Thread::current(), m); | |
47 if ((m->method_data() != NULL) && | |
48 (PrintMethodData || CompilerOracle::should_print(mh))) { | |
49 collected_profiled_methods->push(m); | |
50 } | |
51 } | |
52 | |
53 | |
54 int compare_methods(methodOop* a, methodOop* b) { | |
55 // %%% there can be 32-bit overflow here | |
56 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) | |
57 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); | |
58 } | |
59 | |
60 | |
61 void print_method_invocation_histogram() { | |
62 ResourceMark rm; | |
63 HandleMark hm; | |
64 collected_invoked_methods = new GrowableArray<methodOop>(1024); | |
65 SystemDictionary::methods_do(collect_invoked_methods); | |
66 collected_invoked_methods->sort(&compare_methods); | |
67 // | |
68 tty->cr(); | |
69 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); | |
70 tty->cr(); | |
71 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); | |
72 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, | |
73 synch_total = 0, nativ_total = 0, acces_total = 0; | |
74 for (int index = 0; index < collected_invoked_methods->length(); index++) { | |
75 methodOop m = collected_invoked_methods->at(index); | |
76 int c = m->invocation_count() + m->compiled_invocation_count(); | |
77 if (c >= MethodHistogramCutoff) m->print_invocation_count(); | |
78 int_total += m->invocation_count(); | |
79 comp_total += m->compiled_invocation_count(); | |
80 if (m->is_final()) final_total += c; | |
81 if (m->is_static()) static_total += c; | |
82 if (m->is_synchronized()) synch_total += c; | |
83 if (m->is_native()) nativ_total += c; | |
84 if (m->is_accessor()) acces_total += c; | |
85 } | |
86 tty->cr(); | |
87 total = int_total + comp_total; | |
88 tty->print_cr("Invocations summary:"); | |
89 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); | |
90 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); | |
91 tty->print_cr("\t%9d (100%%) total", total); | |
92 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); | |
93 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); | |
94 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); | |
95 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); | |
96 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); | |
97 tty->cr(); | |
98 SharedRuntime::print_call_statistics(comp_total); | |
99 } | |
100 | |
101 void print_method_profiling_data() { | |
102 ResourceMark rm; | |
103 HandleMark hm; | |
104 collected_profiled_methods = new GrowableArray<methodOop>(1024); | |
105 SystemDictionary::methods_do(collect_profiled_methods); | |
106 collected_profiled_methods->sort(&compare_methods); | |
107 | |
108 int count = collected_profiled_methods->length(); | |
109 if (count > 0) { | |
110 for (int index = 0; index < count; index++) { | |
111 methodOop m = collected_profiled_methods->at(index); | |
112 ttyLocker ttyl; | |
113 tty->print_cr("------------------------------------------------------------------------"); | |
114 //m->print_name(tty); | |
115 m->print_invocation_count(); | |
116 tty->cr(); | |
117 m->print_codes(); | |
118 } | |
119 tty->print_cr("------------------------------------------------------------------------"); | |
120 } | |
121 } | |
122 | |
123 void print_bytecode_count() { | |
124 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
125 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); | |
126 } | |
127 } | |
128 | |
129 AllocStats alloc_stats; | |
130 | |
131 | |
132 | |
133 // General statistics printing (profiling ...) | |
134 | |
135 void print_statistics() { | |
136 | |
137 #ifdef ASSERT | |
138 | |
139 if (CountRuntimeCalls) { | |
140 extern Histogram *RuntimeHistogram; | |
141 RuntimeHistogram->print(); | |
142 } | |
143 | |
144 if (CountJNICalls) { | |
145 extern Histogram *JNIHistogram; | |
146 JNIHistogram->print(); | |
147 } | |
148 | |
149 if (CountJVMCalls) { | |
150 extern Histogram *JVMHistogram; | |
151 JVMHistogram->print(); | |
152 } | |
153 | |
154 #endif | |
155 | |
156 if (MemProfiling) { | |
157 MemProfiler::disengage(); | |
158 } | |
159 | |
160 if (CITime) { | |
161 CompileBroker::print_times(); | |
162 } | |
163 | |
164 #ifdef COMPILER1 | |
165 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
166 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); | |
167 Runtime1::print_statistics(); | |
168 Deoptimization::print_statistics(); | |
169 nmethod::print_statistics(); | |
170 } | |
171 #endif /* COMPILER1 */ | |
172 | |
173 #ifdef COMPILER2 | |
174 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { | |
175 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); | |
176 Compile::print_statistics(); | |
177 #ifndef COMPILER1 | |
178 Deoptimization::print_statistics(); | |
179 nmethod::print_statistics(); | |
180 #endif //COMPILER1 | |
181 SharedRuntime::print_statistics(); | |
182 os::print_statistics(); | |
183 } | |
184 | |
185 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) { | |
186 OptoRuntime::print_named_counters(); | |
187 } | |
188 | |
189 if (TimeLivenessAnalysis) { | |
190 MethodLiveness::print_times(); | |
191 } | |
192 #ifdef ASSERT | |
193 if (CollectIndexSetStatistics) { | |
194 IndexSet::print_statistics(); | |
195 } | |
196 #endif // ASSERT | |
197 #endif // COMPILER2 | |
198 if (CountCompiledCalls) { | |
199 print_method_invocation_histogram(); | |
200 } | |
201 if (ProfileInterpreter || Tier1UpdateMethodData) { | |
202 print_method_profiling_data(); | |
203 } | |
204 if (TimeCompiler) { | |
205 COMPILER2_PRESENT(Compile::print_timers();) | |
206 } | |
207 if (TimeCompilationPolicy) { | |
208 CompilationPolicy::policy()->print_time(); | |
209 } | |
210 if (TimeOopMap) { | |
211 GenerateOopMap::print_time(); | |
212 } | |
213 if (ProfilerCheckIntervals) { | |
214 PeriodicTask::print_intervals(); | |
215 } | |
216 if (PrintSymbolTableSizeHistogram) { | |
217 SymbolTable::print_histogram(); | |
218 } | |
219 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { | |
220 BytecodeCounter::print(); | |
221 } | |
222 if (PrintBytecodePairHistogram) { | |
223 BytecodePairHistogram::print(); | |
224 } | |
225 | |
226 if (PrintCodeCache) { | |
227 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
228 CodeCache::print(); | |
229 } | |
230 | |
231 if (PrintCodeCache2) { | |
232 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
233 CodeCache::print_internals(); | |
234 } | |
235 | |
236 if (PrintClassStatistics) { | |
237 SystemDictionary::print_class_statistics(); | |
238 } | |
239 if (PrintMethodStatistics) { | |
240 SystemDictionary::print_method_statistics(); | |
241 } | |
242 | |
243 if (PrintVtableStats) { | |
244 klassVtable::print_statistics(); | |
245 klassItable::print_statistics(); | |
246 } | |
247 if (VerifyOops) { | |
248 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); | |
249 } | |
250 | |
251 print_bytecode_count(); | |
252 if (WizardMode) { | |
253 tty->print("allocation stats: "); | |
254 alloc_stats.print(); | |
255 tty->cr(); | |
256 } | |
257 | |
258 if (PrintSystemDictionaryAtExit) { | |
259 SystemDictionary::print(); | |
260 } | |
261 | |
262 if (PrintBiasedLockingStatistics) { | |
263 BiasedLocking::print_counters(); | |
264 } | |
265 | |
266 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
267 #ifdef COMPILER2 | |
268 if (ZapDeadCompiledLocals) { | |
269 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); | |
270 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); | |
271 } | |
272 #endif // COMPILER2 | |
273 #endif // ENABLE_ZAP_DEAD_LOCALS | |
274 } | |
275 | |
276 #else // PRODUCT MODE STATISTICS | |
277 | |
278 void print_statistics() { | |
279 | |
280 if (CITime) { | |
281 CompileBroker::print_times(); | |
282 } | |
283 #ifdef COMPILER2 | |
284 if (PrintPreciseBiasedLockingStatistics) { | |
285 OptoRuntime::print_named_counters(); | |
286 } | |
287 #endif | |
288 if (PrintBiasedLockingStatistics) { | |
289 BiasedLocking::print_counters(); | |
290 } | |
291 } | |
292 | |
293 #endif | |
294 | |
295 | |
296 // Helper class for registering on_exit calls through JVM_OnExit | |
297 | |
298 extern "C" { | |
299 typedef void (*__exit_proc)(void); | |
300 } | |
301 | |
302 class ExitProc : public CHeapObj { | |
303 private: | |
304 __exit_proc _proc; | |
305 // void (*_proc)(void); | |
306 ExitProc* _next; | |
307 public: | |
308 // ExitProc(void (*proc)(void)) { | |
309 ExitProc(__exit_proc proc) { | |
310 _proc = proc; | |
311 _next = NULL; | |
312 } | |
313 void evaluate() { _proc(); } | |
314 ExitProc* next() const { return _next; } | |
315 void set_next(ExitProc* next) { _next = next; } | |
316 }; | |
317 | |
318 | |
319 // Linked list of registered on_exit procedures | |
320 | |
321 static ExitProc* exit_procs = NULL; | |
322 | |
323 | |
324 extern "C" { | |
325 void register_on_exit_function(void (*func)(void)) { | |
326 ExitProc *entry = new ExitProc(func); | |
327 // Classic vm does not throw an exception in case the allocation failed, | |
328 if (entry != NULL) { | |
329 entry->set_next(exit_procs); | |
330 exit_procs = entry; | |
331 } | |
332 } | |
333 } | |
334 | |
335 // Note: before_exit() can be executed only once, if more than one threads | |
336 // are trying to shutdown the VM at the same time, only one thread | |
337 // can run before_exit() and all other threads must wait. | |
338 void before_exit(JavaThread * thread) { | |
339 #define BEFORE_EXIT_NOT_RUN 0 | |
340 #define BEFORE_EXIT_RUNNING 1 | |
341 #define BEFORE_EXIT_DONE 2 | |
342 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; | |
343 | |
344 // Note: don't use a Mutex to guard the entire before_exit(), as | |
345 // JVMTI post_thread_end_event and post_vm_death_event will run native code. | |
346 // A CAS or OSMutex would work just fine but then we need to manipulate | |
347 // thread state for Safepoint. Here we use Monitor wait() and notify_all() | |
348 // for synchronization. | |
349 { MutexLocker ml(BeforeExit_lock); | |
350 switch (_before_exit_status) { | |
351 case BEFORE_EXIT_NOT_RUN: | |
352 _before_exit_status = BEFORE_EXIT_RUNNING; | |
353 break; | |
354 case BEFORE_EXIT_RUNNING: | |
355 while (_before_exit_status == BEFORE_EXIT_RUNNING) { | |
356 BeforeExit_lock->wait(); | |
357 } | |
358 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); | |
359 return; | |
360 case BEFORE_EXIT_DONE: | |
361 return; | |
362 } | |
363 } | |
364 | |
365 // The only difference between this and Win32's _onexit procs is that | |
366 // this version is invoked before any threads get killed. | |
367 ExitProc* current = exit_procs; | |
368 while (current != NULL) { | |
369 ExitProc* next = current->next(); | |
370 current->evaluate(); | |
371 delete current; | |
372 current = next; | |
373 } | |
374 | |
375 // Hang forever on exit if we're reporting an error. | |
376 if (ShowMessageBoxOnError && is_error_reported()) { | |
377 os::infinite_sleep(); | |
378 } | |
379 | |
380 // Terminate watcher thread - must before disenrolling any periodic task | |
381 WatcherThread::stop(); | |
382 | |
383 // Print statistics gathered (profiling ...) | |
384 if (Arguments::has_profile()) { | |
385 FlatProfiler::disengage(); | |
386 FlatProfiler::print(10); | |
387 } | |
388 | |
389 // shut down the StatSampler task | |
390 StatSampler::disengage(); | |
391 StatSampler::destroy(); | |
392 | |
393 #ifndef SERIALGC | |
394 // stop CMS threads | |
395 if (UseConcMarkSweepGC) { | |
396 ConcurrentMarkSweepThread::stop(); | |
397 } | |
398 #endif // SERIALGC | |
399 | |
400 // Print GC/heap related information. | |
401 if (PrintGCDetails) { | |
402 Universe::print(); | |
403 AdaptiveSizePolicyOutput(0); | |
404 } | |
405 | |
406 | |
407 if (Arguments::has_alloc_profile()) { | |
408 HandleMark hm; | |
409 // Do one last collection to enumerate all the objects | |
410 // allocated since the last one. | |
411 Universe::heap()->collect(GCCause::_allocation_profiler); | |
412 AllocationProfiler::disengage(); | |
413 AllocationProfiler::print(0); | |
414 } | |
415 | |
416 if (PrintBytecodeHistogram) { | |
417 BytecodeHistogram::print(); | |
418 } | |
419 | |
420 if (JvmtiExport::should_post_thread_life()) { | |
421 JvmtiExport::post_thread_end(thread); | |
422 } | |
423 // Always call even when there are not JVMTI environments yet, since environments | |
424 // may be attached late and JVMTI must track phases of VM execution | |
425 JvmtiExport::post_vm_death(); | |
426 Threads::shutdown_vm_agents(); | |
427 | |
428 // Terminate the signal thread | |
429 // Note: we don't wait until it actually dies. | |
430 os::terminate_signal_thread(); | |
431 | |
432 print_statistics(); | |
433 Universe::heap()->print_tracing_info(); | |
434 | |
435 VTune::exit(); | |
436 | |
437 { MutexLocker ml(BeforeExit_lock); | |
438 _before_exit_status = BEFORE_EXIT_DONE; | |
439 BeforeExit_lock->notify_all(); | |
440 } | |
441 | |
442 #undef BEFORE_EXIT_NOT_RUN | |
443 #undef BEFORE_EXIT_RUNNING | |
444 #undef BEFORE_EXIT_DONE | |
445 } | |
446 | |
447 void vm_exit(int code) { | |
448 Thread* thread = ThreadLocalStorage::thread_index() == -1 ? NULL | |
449 : ThreadLocalStorage::get_thread_slow(); | |
450 if (thread == NULL) { | |
451 // we have serious problems -- just exit | |
452 vm_direct_exit(code); | |
453 } | |
454 | |
455 if (VMThread::vm_thread() != NULL) { | |
456 // Fire off a VM_Exit operation to bring VM to a safepoint and exit | |
457 VM_Exit op(code); | |
458 if (thread->is_Java_thread()) | |
459 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); | |
460 VMThread::execute(&op); | |
461 // should never reach here; but in case something wrong with VM Thread. | |
462 vm_direct_exit(code); | |
463 } else { | |
464 // VM thread is gone, just exit | |
465 vm_direct_exit(code); | |
466 } | |
467 ShouldNotReachHere(); | |
468 } | |
469 | |
470 void notify_vm_shutdown() { | |
471 // For now, just a dtrace probe. | |
472 HS_DTRACE_PROBE(hotspot, vm__shutdown); | |
473 } | |
474 | |
475 void vm_direct_exit(int code) { | |
476 notify_vm_shutdown(); | |
477 ::exit(code); | |
478 } | |
479 | |
480 void vm_perform_shutdown_actions() { | |
481 // Warning: do not call 'exit_globals()' here. All threads are still running. | |
482 // Calling 'exit_globals()' will disable thread-local-storage and cause all | |
483 // kinds of assertions to trigger in debug mode. | |
484 if (is_init_completed()) { | |
485 Thread* thread = Thread::current(); | |
486 if (thread->is_Java_thread()) { | |
487 // We are leaving the VM, set state to native (in case any OS exit | |
488 // handlers call back to the VM) | |
489 JavaThread* jt = (JavaThread*)thread; | |
490 // Must always be walkable or have no last_Java_frame when in | |
491 // thread_in_native | |
492 jt->frame_anchor()->make_walkable(jt); | |
493 jt->set_thread_state(_thread_in_native); | |
494 } | |
495 } | |
496 notify_vm_shutdown(); | |
497 } | |
498 | |
499 void vm_shutdown() | |
500 { | |
501 vm_perform_shutdown_actions(); | |
502 os::shutdown(); | |
503 } | |
504 | |
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505 void vm_abort(bool dump_core) { |
0 | 506 vm_perform_shutdown_actions(); |
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507 os::abort(dump_core); |
0 | 508 ShouldNotReachHere(); |
509 } | |
510 | |
511 void vm_notify_during_shutdown(const char* error, const char* message) { | |
512 if (error != NULL) { | |
513 tty->print_cr("Error occurred during initialization of VM"); | |
514 tty->print("%s", error); | |
515 if (message != NULL) { | |
516 tty->print_cr(": %s", message); | |
517 } | |
518 else { | |
519 tty->cr(); | |
520 } | |
521 } | |
522 if (ShowMessageBoxOnError && WizardMode) { | |
523 fatal("Error occurred during initialization of VM"); | |
524 } | |
525 } | |
526 | |
527 void vm_exit_during_initialization(Handle exception) { | |
528 tty->print_cr("Error occurred during initialization of VM"); | |
529 // If there are exceptions on this thread it must be cleared | |
530 // first and here. Any future calls to EXCEPTION_MARK requires | |
531 // that no pending exceptions exist. | |
532 Thread *THREAD = Thread::current(); | |
533 if (HAS_PENDING_EXCEPTION) { | |
534 CLEAR_PENDING_EXCEPTION; | |
535 } | |
536 java_lang_Throwable::print(exception, tty); | |
537 tty->cr(); | |
538 java_lang_Throwable::print_stack_trace(exception(), tty); | |
539 tty->cr(); | |
540 vm_notify_during_shutdown(NULL, NULL); | |
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541 |
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542 // Failure during initialization, we don't want to dump core |
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543 vm_abort(false); |
0 | 544 } |
545 | |
546 void vm_exit_during_initialization(symbolHandle ex, const char* message) { | |
547 ResourceMark rm; | |
548 vm_notify_during_shutdown(ex->as_C_string(), message); | |
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549 |
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550 // Failure during initialization, we don't want to dump core |
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551 vm_abort(false); |
0 | 552 } |
553 | |
554 void vm_exit_during_initialization(const char* error, const char* message) { | |
555 vm_notify_during_shutdown(error, message); | |
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556 |
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557 // Failure during initialization, we don't want to dump core |
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558 vm_abort(false); |
0 | 559 } |
560 | |
561 void vm_shutdown_during_initialization(const char* error, const char* message) { | |
562 vm_notify_during_shutdown(error, message); | |
563 vm_shutdown(); | |
564 } | |
565 | |
242 | 566 JDK_Version JDK_Version::_current; |
0 | 567 |
568 void JDK_Version::initialize() { | |
242 | 569 jdk_version_info info; |
570 assert(!_current.is_valid(), "Don't initialize twice"); | |
571 | |
0 | 572 void *lib_handle = os::native_java_library(); |
242 | 573 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, |
574 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); | |
0 | 575 |
576 if (func == NULL) { | |
577 // JDK older than 1.6 | |
242 | 578 _current._partially_initialized = true; |
579 } else { | |
580 (*func)(&info, sizeof(info)); | |
0 | 581 |
242 | 582 int major = JDK_VERSION_MAJOR(info.jdk_version); |
583 int minor = JDK_VERSION_MINOR(info.jdk_version); | |
584 int micro = JDK_VERSION_MICRO(info.jdk_version); | |
585 int build = JDK_VERSION_BUILD(info.jdk_version); | |
586 if (major == 1 && minor > 4) { | |
587 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. | |
588 major = minor; | |
589 minor = micro; | |
590 micro = 0; | |
591 } | |
592 _current = JDK_Version(major, minor, micro, info.update_version, | |
593 info.special_update_version, build, | |
594 info.thread_park_blocker == 1); | |
0 | 595 } |
242 | 596 } |
597 | |
598 void JDK_Version::fully_initialize( | |
599 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { | |
600 // This is only called when current is less than 1.6 and we've gotten | |
601 // far enough in the initialization to determine the exact version. | |
602 assert(major < 6, "not needed for JDK version >= 6"); | |
603 assert(is_partially_initialized(), "must not initialize"); | |
604 if (major < 5) { | |
605 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. | |
606 micro = minor; | |
607 minor = major; | |
608 major = 1; | |
0 | 609 } |
242 | 610 _current = JDK_Version(major, minor, micro, update); |
0 | 611 } |
612 | |
613 void JDK_Version_init() { | |
614 JDK_Version::initialize(); | |
615 } | |
242 | 616 |
617 static int64_t encode_jdk_version(const JDK_Version& v) { | |
618 return | |
619 ((int64_t)v.major_version() << (BitsPerByte * 5)) | | |
620 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | | |
621 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | | |
622 ((int64_t)v.update_version() << (BitsPerByte * 2)) | | |
623 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | | |
624 ((int64_t)v.build_number() << (BitsPerByte * 0)); | |
625 } | |
626 | |
627 int JDK_Version::compare(const JDK_Version& other) const { | |
628 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); | |
629 if (!is_partially_initialized() && other.is_partially_initialized()) { | |
630 return -(other.compare(*this)); // flip the comparators | |
631 } | |
632 assert(!other.is_partially_initialized(), "Not initialized yet"); | |
633 if (is_partially_initialized()) { | |
634 assert(other.major_version() >= 6, | |
635 "Invalid JDK version comparison during initialization"); | |
636 return -1; | |
637 } else { | |
638 uint64_t e = encode_jdk_version(*this); | |
639 uint64_t o = encode_jdk_version(other); | |
640 return (e > o) ? 1 : ((e == o) ? 0 : -1); | |
641 } | |
642 } | |
643 | |
644 void JDK_Version::to_string(char* buffer, size_t buflen) const { | |
645 size_t index = 0; | |
646 if (!is_valid()) { | |
647 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); | |
648 } else if (is_partially_initialized()) { | |
649 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); | |
650 } else { | |
651 index += jio_snprintf( | |
652 &buffer[index], buflen - index, "%d.%d", _major, _minor); | |
653 if (_micro > 0) { | |
654 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); | |
655 } | |
656 if (_update > 0) { | |
657 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); | |
658 } | |
659 if (_special > 0) { | |
660 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); | |
661 } | |
662 if (_build > 0) { | |
663 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); | |
664 } | |
665 } | |
666 } |