1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/systemDictionary.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/codeCache.hpp"
31 #include "code/dependencyContext.hpp"
32 #include "compiler/compileBroker.hpp"
33 #include "compiler/compileLog.hpp"
34 #include "compiler/compilerOracle.hpp"
35 #include "compiler/directivesParser.hpp"
36 #include "interpreter/linkResolver.hpp"
37 #include "logging/log.hpp"
38 #include "logging/logStream.hpp"
39 #include "memory/allocation.inline.hpp"
40 #include "memory/resourceArea.hpp"
41 #include "oops/methodData.hpp"
42 #include "oops/method.inline.hpp"
43 #include "oops/oop.inline.hpp"
44 #include "prims/nativeLookup.hpp"
45 #include "prims/whitebox.hpp"
46 #include "runtime/arguments.hpp"
47 #include "runtime/atomic.hpp"
48 #include "runtime/compilationPolicy.hpp"
49 #include "runtime/init.hpp"
50 #include "runtime/interfaceSupport.inline.hpp"
51 #include "runtime/javaCalls.hpp"
52 #include "runtime/jniHandles.inline.hpp"
53 #include "runtime/os.hpp"
54 #include "runtime/sharedRuntime.hpp"
55 #include "runtime/sweeper.hpp"
56 #include "runtime/timerTrace.hpp"
57 #include "runtime/vframe.inline.hpp"
58 #include "trace/tracing.hpp"
59 #include "utilities/debug.hpp"
60 #include "utilities/dtrace.hpp"
61 #include "utilities/events.hpp"
62 #include "utilities/formatBuffer.hpp"
63 #ifdef COMPILER1
64 #include "c1/c1_Compiler.hpp"
65 #endif
66 #if INCLUDE_JVMCI
67 #include "jvmci/jvmciCompiler.hpp"
68 #include "jvmci/jvmciRuntime.hpp"
69 #include "jvmci/jvmciJavaClasses.hpp"
70 #include "runtime/vframe.hpp"
71 #endif
72 #ifdef COMPILER2
73 #include "opto/c2compiler.hpp"
74 #endif
75
76 #ifdef DTRACE_ENABLED
77
78 // Only bother with this argument setup if dtrace is available
79
80 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \
81 { \
82 Symbol* klass_name = (method)->klass_name(); \
83 Symbol* name = (method)->name(); \
84 Symbol* signature = (method)->signature(); \
85 HOTSPOT_METHOD_COMPILE_BEGIN( \
86 (char *) comp_name, strlen(comp_name), \
87 (char *) klass_name->bytes(), klass_name->utf8_length(), \
88 (char *) name->bytes(), name->utf8_length(), \
89 (char *) signature->bytes(), signature->utf8_length()); \
90 }
91
92 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \
93 { \
94 Symbol* klass_name = (method)->klass_name(); \
95 Symbol* name = (method)->name(); \
96 Symbol* signature = (method)->signature(); \
97 HOTSPOT_METHOD_COMPILE_END( \
98 (char *) comp_name, strlen(comp_name), \
99 (char *) klass_name->bytes(), klass_name->utf8_length(), \
100 (char *) name->bytes(), name->utf8_length(), \
101 (char *) signature->bytes(), signature->utf8_length(), (success)); \
102 }
103
104 #else // ndef DTRACE_ENABLED
105
106 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name)
107 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success)
108
109 #endif // ndef DTRACE_ENABLED
110
111 bool CompileBroker::_initialized = false;
112 volatile bool CompileBroker::_should_block = false;
113 volatile int CompileBroker::_print_compilation_warning = 0;
114 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
115
116 // The installed compiler(s)
117 AbstractCompiler* CompileBroker::_compilers[2];
118
119 // The maximum numbers of compiler threads to be determined during startup.
120 int CompileBroker::c1_count = 0;
121 int CompileBroker::c2_count = 0;
122
123 // An array of compiler names as Java String objects
124 jobject* CompileBroker::_compiler1_objects = NULL;
125 jobject* CompileBroker::_compiler2_objects = NULL;
126
127 // These counters are used to assign an unique ID to each compilation.
128 volatile jint CompileBroker::_compilation_id = 0;
129 volatile jint CompileBroker::_osr_compilation_id = 0;
130
131 // Debugging information
132 int CompileBroker::_last_compile_type = no_compile;
133 int CompileBroker::_last_compile_level = CompLevel_none;
134 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
135
136 // Performance counters
137 PerfCounter* CompileBroker::_perf_total_compilation = NULL;
138 PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
139 PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
140
141 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
142 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
143 PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
144 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
145 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
146
147 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
148 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
149 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
150 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
151
152 PerfStringVariable* CompileBroker::_perf_last_method = NULL;
153 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
154 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
155 PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
156 PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
157 PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
158 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
159
160 // Timers and counters for generating statistics
161 elapsedTimer CompileBroker::_t_total_compilation;
162 elapsedTimer CompileBroker::_t_osr_compilation;
163 elapsedTimer CompileBroker::_t_standard_compilation;
164 elapsedTimer CompileBroker::_t_invalidated_compilation;
165 elapsedTimer CompileBroker::_t_bailedout_compilation;
166
167 int CompileBroker::_total_bailout_count = 0;
168 int CompileBroker::_total_invalidated_count = 0;
169 int CompileBroker::_total_compile_count = 0;
170 int CompileBroker::_total_osr_compile_count = 0;
171 int CompileBroker::_total_standard_compile_count = 0;
172
173 int CompileBroker::_sum_osr_bytes_compiled = 0;
174 int CompileBroker::_sum_standard_bytes_compiled = 0;
175 int CompileBroker::_sum_nmethod_size = 0;
176 int CompileBroker::_sum_nmethod_code_size = 0;
177
178 long CompileBroker::_peak_compilation_time = 0;
179
180 CompileQueue* CompileBroker::_c2_compile_queue = NULL;
181 CompileQueue* CompileBroker::_c1_compile_queue = NULL;
182
183
184
185 class CompilationLog : public StringEventLog {
186 public:
187 CompilationLog() : StringEventLog("Compilation events") {
188 }
189
190 void log_compile(JavaThread* thread, CompileTask* task) {
191 StringLogMessage lm;
192 stringStream sstr = lm.stream();
193 // msg.time_stamp().update_to(tty->time_stamp().ticks());
194 task->print(&sstr, NULL, true, false);
195 log(thread, "%s", (const char*)lm);
196 }
197
198 void log_nmethod(JavaThread* thread, nmethod* nm) {
199 log(thread, "nmethod %d%s " INTPTR_FORMAT " code [" INTPTR_FORMAT ", " INTPTR_FORMAT "]",
200 nm->compile_id(), nm->is_osr_method() ? "%" : "",
201 p2i(nm), p2i(nm->code_begin()), p2i(nm->code_end()));
202 }
203
204 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) {
205 StringLogMessage lm;
206 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason);
207 if (retry_message != NULL) {
208 lm.append(" (%s)", retry_message);
209 }
210 lm.print("\n");
211 log(thread, "%s", (const char*)lm);
212 }
213
214 void log_metaspace_failure(const char* reason) {
215 ResourceMark rm;
216 StringLogMessage lm;
217 lm.print("%4d COMPILE PROFILING SKIPPED: %s", -1, reason);
218 lm.print("\n");
219 log(JavaThread::current(), "%s", (const char*)lm);
220 }
221 };
222
223 static CompilationLog* _compilation_log = NULL;
224
225 bool compileBroker_init() {
226 if (LogEvents) {
227 _compilation_log = new CompilationLog();
228 }
229
230 // init directives stack, adding default directive
231 DirectivesStack::init();
232
233 if (DirectivesParser::has_file()) {
234 return DirectivesParser::parse_from_flag();
235 } else if (CompilerDirectivesPrint) {
236 // Print default directive even when no other was added
237 DirectivesStack::print(tty);
238 }
239
240 return true;
241 }
242
243 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
244 CompilerThread* thread = CompilerThread::current();
245 thread->set_task(task);
246 #if INCLUDE_JVMCI
247 if (task->is_blocking() && CompileBroker::compiler(task->comp_level())->is_jvmci()) {
248 task->set_jvmci_compiler_thread(thread);
249 }
250 #endif
251 CompileLog* log = thread->log();
252 if (log != NULL) task->log_task_start(log);
253 }
254
255 CompileTaskWrapper::~CompileTaskWrapper() {
256 CompilerThread* thread = CompilerThread::current();
257 CompileTask* task = thread->task();
258 CompileLog* log = thread->log();
259 if (log != NULL) task->log_task_done(log);
260 thread->set_task(NULL);
261 task->set_code_handle(NULL);
262 thread->set_env(NULL);
263 if (task->is_blocking()) {
264 bool free_task = false;
265 {
266 MutexLocker notifier(task->lock(), thread);
267 task->mark_complete();
268 #if INCLUDE_JVMCI
269 if (CompileBroker::compiler(task->comp_level())->is_jvmci()) {
270 if (!task->has_waiter()) {
271 // The waiting thread timed out and thus did not free the task.
272 free_task = true;
273 }
274 task->set_jvmci_compiler_thread(NULL);
275 }
276 #endif
277 if (!free_task) {
278 // Notify the waiting thread that the compilation has completed
279 // so that it can free the task.
280 task->lock()->notify_all();
281 }
282 }
283 if (free_task) {
284 // The task can only be freed once the task lock is released.
285 CompileTask::free(task);
286 }
287 } else {
288 task->mark_complete();
289
290 // By convention, the compiling thread is responsible for
291 // recycling a non-blocking CompileTask.
292 CompileTask::free(task);
293 }
294 }
295
296 /**
297 * Check if a CompilerThread can be removed and update count if requested.
298 */
299 static bool can_remove(CompilerThread *ct, bool do_it) {
300 assert(UseDynamicNumberOfCompilerThreads, "or shouldn't be here");
301 AbstractCompiler *compiler = ct->compiler();
302 int compiler_count = compiler->num_compiler_threads();
303 // Keep at least 1 compiler thread of each type.
304 if (compiler_count < 2) return false;
305 // We only allow the last compiler thread of each type to get removed.
306 jobject last_compiler = (compiler->is_c1()) ? CompileBroker::compiler1_object(compiler_count - 1)
307 : CompileBroker::compiler2_object(compiler_count - 1);
308 if (ct->threadObj() == JNIHandles::resolve_non_null(last_compiler)) {
309 if (do_it) {
310 assert_locked_or_safepoint(CompileThread_lock); // Update must be consistent.
311 compiler->set_num_compiler_threads(compiler_count - 1);
312 }
313 return true;
314 }
315 return false;
316 }
317
318 /**
319 * Add a CompileTask to a CompileQueue.
320 */
321 void CompileQueue::add(CompileTask* task) {
322 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock");
323
324 task->set_next(NULL);
325 task->set_prev(NULL);
326
327 if (_last == NULL) {
328 // The compile queue is empty.
329 assert(_first == NULL, "queue is empty");
330 _first = task;
331 _last = task;
332 } else {
333 // Append the task to the queue.
334 assert(_last->next() == NULL, "not last");
335 _last->set_next(task);
336 task->set_prev(_last);
337 _last = task;
338 }
339 ++_size;
340
341 // Mark the method as being in the compile queue.
342 task->method()->set_queued_for_compilation();
343
344 if (CIPrintCompileQueue) {
345 print_tty();
346 }
347
348 if (LogCompilation && xtty != NULL) {
349 task->log_task_queued();
350 }
351
352 // Notify CompilerThreads that a task is available.
353 MethodCompileQueue_lock->notify_all();
354 }
355
356 /**
357 * Empties compilation queue by putting all compilation tasks onto
358 * a freelist. Furthermore, the method wakes up all threads that are
359 * waiting on a compilation task to finish. This can happen if background
360 * compilation is disabled.
361 */
362 void CompileQueue::free_all() {
363 MutexLocker mu(MethodCompileQueue_lock);
364 CompileTask* next = _first;
365
366 // Iterate over all tasks in the compile queue
367 while (next != NULL) {
368 CompileTask* current = next;
369 next = current->next();
370 {
371 // Wake up thread that blocks on the compile task.
372 MutexLocker ct_lock(current->lock());
373 current->lock()->notify();
374 }
375 // Put the task back on the freelist.
376 CompileTask::free(current);
377 }
378 _first = NULL;
379
380 // Wake up all threads that block on the queue.
381 MethodCompileQueue_lock->notify_all();
382 }
383
384 /**
385 * Get the next CompileTask from a CompileQueue
386 */
387 CompileTask* CompileQueue::get() {
388 // save methods from RedefineClasses across safepoint
389 // across MethodCompileQueue_lock below.
390 methodHandle save_method;
391 methodHandle save_hot_method;
392
393 MutexLocker locker(MethodCompileQueue_lock);
394 // If _first is NULL we have no more compile jobs. There are two reasons for
395 // having no compile jobs: First, we compiled everything we wanted. Second,
396 // we ran out of code cache so compilation has been disabled. In the latter
397 // case we perform code cache sweeps to free memory such that we can re-enable
398 // compilation.
399 while (_first == NULL) {
400 // Exit loop if compilation is disabled forever
401 if (CompileBroker::is_compilation_disabled_forever()) {
402 return NULL;
403 }
404
405 // If there are no compilation tasks and we can compile new jobs
406 // (i.e., there is enough free space in the code cache) there is
407 // no need to invoke the sweeper. As a result, the hotness of methods
408 // remains unchanged. This behavior is desired, since we want to keep
409 // the stable state, i.e., we do not want to evict methods from the
410 // code cache if it is unnecessary.
411 // We need a timed wait here, since compiler threads can exit if compilation
412 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads
413 // is not critical and we do not want idle compiler threads to wake up too often.
414 MethodCompileQueue_lock->wait(!Mutex::_no_safepoint_check_flag, 5*1000);
415
416 if (UseDynamicNumberOfCompilerThreads && _first == NULL) {
417 // Still nothing to compile. Give caller a chance to stop this thread.
418 if (can_remove(CompilerThread::current(), false)) return NULL;
419 }
420 }
421
422 if (CompileBroker::is_compilation_disabled_forever()) {
423 return NULL;
424 }
425
426 CompileTask* task;
427 {
428 NoSafepointVerifier nsv;
429 task = CompilationPolicy::policy()->select_task(this);
430 }
431
432 if (task != NULL) {
433 // Save method pointers across unlock safepoint. The task is removed from
434 // the compilation queue, which is walked during RedefineClasses.
435 save_method = methodHandle(task->method());
436 save_hot_method = methodHandle(task->hot_method());
437
438 remove(task);
439 purge_stale_tasks(); // may temporarily release MCQ lock
440 }
441
442 return task;
443 }
444
445 // Clean & deallocate stale compile tasks.
446 // Temporarily releases MethodCompileQueue lock.
447 void CompileQueue::purge_stale_tasks() {
448 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock");
449 if (_first_stale != NULL) {
450 // Stale tasks are purged when MCQ lock is released,
451 // but _first_stale updates are protected by MCQ lock.
452 // Once task processing starts and MCQ lock is released,
453 // other compiler threads can reuse _first_stale.
454 CompileTask* head = _first_stale;
455 _first_stale = NULL;
456 {
457 MutexUnlocker ul(MethodCompileQueue_lock);
458 for (CompileTask* task = head; task != NULL; ) {
459 CompileTask* next_task = task->next();
460 CompileTaskWrapper ctw(task); // Frees the task
461 task->set_failure_reason("stale task");
462 task = next_task;
463 }
464 }
465 }
466 }
467
468 void CompileQueue::remove(CompileTask* task) {
469 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock");
470 if (task->prev() != NULL) {
471 task->prev()->set_next(task->next());
472 } else {
473 // max is the first element
474 assert(task == _first, "Sanity");
475 _first = task->next();
476 }
477
478 if (task->next() != NULL) {
479 task->next()->set_prev(task->prev());
480 } else {
481 // max is the last element
482 assert(task == _last, "Sanity");
483 _last = task->prev();
484 }
485 --_size;
486 }
487
488 void CompileQueue::remove_and_mark_stale(CompileTask* task) {
489 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock");
490 remove(task);
491
492 // Enqueue the task for reclamation (should be done outside MCQ lock)
493 task->set_next(_first_stale);
494 task->set_prev(NULL);
495 _first_stale = task;
496 }
497
498 // methods in the compile queue need to be marked as used on the stack
499 // so that they don't get reclaimed by Redefine Classes
500 void CompileQueue::mark_on_stack() {
501 CompileTask* task = _first;
502 while (task != NULL) {
503 task->mark_on_stack();
504 task = task->next();
505 }
506 }
507
508
509 CompileQueue* CompileBroker::compile_queue(int comp_level) {
510 if (is_c2_compile(comp_level)) return _c2_compile_queue;
511 if (is_c1_compile(comp_level)) return _c1_compile_queue;
512 return NULL;
513 }
514
515 void CompileBroker::print_compile_queues(outputStream* st) {
516 st->print_cr("Current compiles: ");
517 MutexLocker locker(MethodCompileQueue_lock);
518
519 char buf[2000];
520 int buflen = sizeof(buf);
521 Threads::print_threads_compiling(st, buf, buflen);
522
523 st->cr();
524 if (_c1_compile_queue != NULL) {
525 _c1_compile_queue->print(st);
526 }
527 if (_c2_compile_queue != NULL) {
528 _c2_compile_queue->print(st);
529 }
530 }
531
532 void CompileQueue::print(outputStream* st) {
533 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock");
534 st->print_cr("%s:", name());
535 CompileTask* task = _first;
536 if (task == NULL) {
537 st->print_cr("Empty");
538 } else {
539 while (task != NULL) {
540 task->print(st, NULL, true, true);
541 task = task->next();
542 }
543 }
544 st->cr();
545 }
546
547 void CompileQueue::print_tty() {
548 ttyLocker ttyl;
549 print(tty);
550 }
551
552 CompilerCounters::CompilerCounters() {
553 _current_method[0] = '\0';
554 _compile_type = CompileBroker::no_compile;
555 }
556
557 // ------------------------------------------------------------------
558 // CompileBroker::compilation_init
559 //
560 // Initialize the Compilation object
561 void CompileBroker::compilation_init(TRAPS) {
562 _last_method_compiled[0] = '\0';
563
564 // No need to initialize compilation system if we do not use it.
565 if (!UseCompiler) {
566 return;
567 }
568 // Set the interface to the current compiler(s).
569 c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
570 c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
571
572 #if INCLUDE_JVMCI
573 if (EnableJVMCI) {
574 // This is creating a JVMCICompiler singleton.
575 JVMCICompiler* jvmci = new JVMCICompiler();
576
577 if (UseJVMCICompiler) {
578 _compilers[1] = jvmci;
579 if (FLAG_IS_DEFAULT(JVMCIThreads)) {
580 if (BootstrapJVMCI) {
581 // JVMCI will bootstrap so give it more threads
582 c2_count = MIN2(32, os::active_processor_count());
583 }
584 } else {
585 c2_count = JVMCIThreads;
586 }
587 if (FLAG_IS_DEFAULT(JVMCIHostThreads)) {
588 } else {
589 c1_count = JVMCIHostThreads;
590 }
591 }
592 }
593 #endif // INCLUDE_JVMCI
594
595 #ifdef COMPILER1
596 if (c1_count > 0) {
597 _compilers[0] = new Compiler();
598 }
599 #endif // COMPILER1
600
601 #ifdef COMPILER2
602 if (true JVMCI_ONLY( && !UseJVMCICompiler)) {
603 if (c2_count > 0) {
604 _compilers[1] = new C2Compiler();
605 }
606 }
607 #endif // COMPILER2
608
609 // Start the compiler thread(s) and the sweeper thread
610 init_compiler_sweeper_threads();
611 // totalTime performance counter is always created as it is required
612 // by the implementation of java.lang.management.CompilationMBean.
613 {
614 EXCEPTION_MARK;
615 _perf_total_compilation =
616 PerfDataManager::create_counter(JAVA_CI, "totalTime",
617 PerfData::U_Ticks, CHECK);
618 }
619
620 if (UsePerfData) {
621
622 EXCEPTION_MARK;
623
624 // create the jvmstat performance counters
625 _perf_osr_compilation =
626 PerfDataManager::create_counter(SUN_CI, "osrTime",
627 PerfData::U_Ticks, CHECK);
628
629 _perf_standard_compilation =
630 PerfDataManager::create_counter(SUN_CI, "standardTime",
631 PerfData::U_Ticks, CHECK);
632
633 _perf_total_bailout_count =
634 PerfDataManager::create_counter(SUN_CI, "totalBailouts",
635 PerfData::U_Events, CHECK);
636
637 _perf_total_invalidated_count =
638 PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
639 PerfData::U_Events, CHECK);
640
641 _perf_total_compile_count =
642 PerfDataManager::create_counter(SUN_CI, "totalCompiles",
643 PerfData::U_Events, CHECK);
644 _perf_total_osr_compile_count =
645 PerfDataManager::create_counter(SUN_CI, "osrCompiles",
646 PerfData::U_Events, CHECK);
647
648 _perf_total_standard_compile_count =
649 PerfDataManager::create_counter(SUN_CI, "standardCompiles",
650 PerfData::U_Events, CHECK);
651
652 _perf_sum_osr_bytes_compiled =
653 PerfDataManager::create_counter(SUN_CI, "osrBytes",
654 PerfData::U_Bytes, CHECK);
655
656 _perf_sum_standard_bytes_compiled =
657 PerfDataManager::create_counter(SUN_CI, "standardBytes",
658 PerfData::U_Bytes, CHECK);
659
660 _perf_sum_nmethod_size =
661 PerfDataManager::create_counter(SUN_CI, "nmethodSize",
662 PerfData::U_Bytes, CHECK);
663
664 _perf_sum_nmethod_code_size =
665 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
666 PerfData::U_Bytes, CHECK);
667
668 _perf_last_method =
669 PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
670 CompilerCounters::cmname_buffer_length,
671 "", CHECK);
672
673 _perf_last_failed_method =
674 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
675 CompilerCounters::cmname_buffer_length,
676 "", CHECK);
677
678 _perf_last_invalidated_method =
679 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
680 CompilerCounters::cmname_buffer_length,
681 "", CHECK);
682
683 _perf_last_compile_type =
684 PerfDataManager::create_variable(SUN_CI, "lastType",
685 PerfData::U_None,
686 (jlong)CompileBroker::no_compile,
687 CHECK);
688
689 _perf_last_compile_size =
690 PerfDataManager::create_variable(SUN_CI, "lastSize",
691 PerfData::U_Bytes,
692 (jlong)CompileBroker::no_compile,
693 CHECK);
694
695
696 _perf_last_failed_type =
697 PerfDataManager::create_variable(SUN_CI, "lastFailedType",
698 PerfData::U_None,
699 (jlong)CompileBroker::no_compile,
700 CHECK);
701
702 _perf_last_invalidated_type =
703 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
704 PerfData::U_None,
705 (jlong)CompileBroker::no_compile,
706 CHECK);
707 }
708
709 _initialized = true;
710 }
711
712
713 oop CompileBroker::create_thread_oop(const char* name, TRAPS) {
714 Klass* k = SystemDictionary::find(vmSymbols::java_lang_Thread(), Handle(), Handle(), CHECK_NULL);
715 assert(k != NULL, "must be initialized");
716 InstanceKlass* klass = InstanceKlass::cast(k);
717 instanceHandle thread_handle = klass->allocate_instance_handle(CHECK_NULL);
718 Handle string = java_lang_String::create_from_str(name, CHECK_NULL);
719
720 // Initialize thread_oop to put it into the system threadGroup
721 Handle thread_group(THREAD, Universe::system_thread_group());
722 JavaValue result(T_VOID);
723 JavaCalls::call_special(&result, thread_handle,
724 klass,
725 vmSymbols::object_initializer_name(),
726 vmSymbols::threadgroup_string_void_signature(),
727 thread_group,
728 string,
729 CHECK_NULL);
730
731 return thread_handle();
732 }
733
734
735 JavaThread* CompileBroker::make_thread(jobject thread_handle, CompileQueue* queue,
736 AbstractCompiler* comp, bool compiler_thread, TRAPS) {
737 JavaThread* thread = NULL;
738 {
739 MutexLocker mu(Threads_lock, THREAD);
740 if (compiler_thread) {
741 if (!InjectCompilerCreationFailure || comp->num_compiler_threads() == 0) {
742 CompilerCounters* counters = new CompilerCounters();
743 thread = new CompilerThread(queue, counters);
744 }
745 } else {
746 thread = new CodeCacheSweeperThread();
747 }
748 // At this point the new CompilerThread data-races with this startup
749 // thread (which I believe is the primoridal thread and NOT the VM
750 // thread). This means Java bytecodes being executed at startup can
751 // queue compile jobs which will run at whatever default priority the
752 // newly created CompilerThread runs at.
753
754
755 // At this point it may be possible that no osthread was created for the
756 // JavaThread due to lack of memory. We would have to throw an exception
757 // in that case. However, since this must work and we do not allow
758 // exceptions anyway, check and abort if this fails. But first release the
759 // lock.
760
761 if (thread != NULL && thread->osthread() != NULL) {
762
763 java_lang_Thread::set_thread(JNIHandles::resolve_non_null(thread_handle), thread);
764
765 // Note that this only sets the JavaThread _priority field, which by
766 // definition is limited to Java priorities and not OS priorities.
767 // The os-priority is set in the CompilerThread startup code itself
768
769 java_lang_Thread::set_priority(JNIHandles::resolve_non_null(thread_handle), NearMaxPriority);
770
771 // Note that we cannot call os::set_priority because it expects Java
772 // priorities and we are *explicitly* using OS priorities so that it's
773 // possible to set the compiler thread priority higher than any Java
774 // thread.
775
776 int native_prio = CompilerThreadPriority;
777 if (native_prio == -1) {
778 if (UseCriticalCompilerThreadPriority) {
779 native_prio = os::java_to_os_priority[CriticalPriority];
780 } else {
781 native_prio = os::java_to_os_priority[NearMaxPriority];
782 }
783 }
784 os::set_native_priority(thread, native_prio);
785
786 java_lang_Thread::set_daemon(JNIHandles::resolve_non_null(thread_handle));
787
788 thread->set_threadObj(JNIHandles::resolve_non_null(thread_handle));
789 if (compiler_thread) {
790 thread->as_CompilerThread()->set_compiler(comp);
791 }
792 Threads::add(thread);
793 Thread::start(thread);
794 }
795 }
796
797 // First release lock before aborting VM.
798 if (thread == NULL || thread->osthread() == NULL) {
799 if (UseDynamicNumberOfCompilerThreads && comp->num_compiler_threads() > 0) {
800 delete thread;
801 return NULL;
802 }
803 vm_exit_during_initialization("java.lang.OutOfMemoryError",
804 os::native_thread_creation_failed_msg());
805 }
806
807 // Let go of Threads_lock before yielding
808 os::naked_yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
809
810 return thread;
811 }
812
813
814 void CompileBroker::init_compiler_sweeper_threads() {
815 EXCEPTION_MARK;
816 #if !defined(ZERO)
817 assert(c2_count > 0 || c1_count > 0, "No compilers?");
818 #endif // !ZERO
819 // Initialize the compilation queue
820 if (c2_count > 0) {
821 const char* name = JVMCI_ONLY(UseJVMCICompiler ? "JVMCI compile queue" :) "C2 compile queue";
822 _c2_compile_queue = new CompileQueue(name);
823 _compiler2_objects = NEW_C_HEAP_ARRAY(jobject, c2_count, mtCompiler);
824 }
825 if (c1_count > 0) {
826 _c1_compile_queue = new CompileQueue("C1 compile queue");
827 _compiler1_objects = NEW_C_HEAP_ARRAY(jobject, c1_count, mtCompiler);
828 }
829
830 char name_buffer[256];
831 const bool compiler_thread = true;
832 for (int i = 0; i < c2_count; i++) {
833 // Create a name for our thread.
834 sprintf(name_buffer, "%s CompilerThread%d", _compilers[1]->name(), i);
835 jobject thread_handle = JNIHandles::make_global(Handle(THREAD, CompileBroker::create_thread_oop(name_buffer, THREAD)));
836 _compiler2_objects[i] = thread_handle;
837
838 if (!UseDynamicNumberOfCompilerThreads || i == 0) {
839 JavaThread *ct = make_thread(thread_handle, _c2_compile_queue, _compilers[1], compiler_thread, CHECK);
840 assert(ct != NULL, "should have been handled for initial thread");
841 _compilers[1]->set_num_compiler_threads(i + 1);
842 if (TraceCompilerThreads) {
843 ResourceMark rm;
844 MutexLocker mu(Threads_lock);
845 tty->print_cr("Added initial compiler thread %s", ct->get_thread_name());
846 }
847 }
848 }
849
850 for (int i = 0; i < c1_count; i++) {
851 // Create a name for our thread.
852 sprintf(name_buffer, "C1 CompilerThread%d", i);
853 jobject thread_handle = JNIHandles::make_global(Handle(THREAD, CompileBroker::create_thread_oop(name_buffer, THREAD)));
854 _compiler1_objects[i] = thread_handle;
855
856 if (!UseDynamicNumberOfCompilerThreads || i == 0) {
857 JavaThread *ct = make_thread(thread_handle, _c1_compile_queue, _compilers[0], compiler_thread, CHECK);
858 assert(ct != NULL, "should have been handled for initial thread");
859 _compilers[0]->set_num_compiler_threads(i + 1);
860 if (TraceCompilerThreads) {
861 ResourceMark rm;
862 MutexLocker mu(Threads_lock);
863 tty->print_cr("Added initial compiler thread %s", ct->get_thread_name());
864 }
865 }
866 }
867
868 if (UsePerfData) {
869 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, c1_count + c2_count, CHECK);
870 }
871
872 if (MethodFlushing) {
873 // Initialize the sweeper thread
874 jobject thread_handle = JNIHandles::make_local(THREAD, CompileBroker::create_thread_oop("Sweeper thread", THREAD));
875 make_thread(thread_handle, NULL, NULL, false, CHECK);
876 }
877 }
878
879 void CompileBroker::possibly_add_compiler_threads() {
880 EXCEPTION_MARK;
881
882 julong available_memory = os::available_memory();
883 // Only do attempt to start additional threads if the lock is free.
884 if (!CompileThread_lock->try_lock()) return;
885
886 if (_c2_compile_queue != NULL) {
887 int old_c2_count = _compilers[1]->num_compiler_threads();
888 int new_c2_count = MIN3(_c2_compile_queue->size() / 2,
889 CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization),
890 (int)(available_memory / 200*M));
891
892 for (int i = old_c2_count; i < new_c2_count; i++) {
893 JavaThread *ct = make_thread(compiler2_object(i), _c2_compile_queue, _compilers[1], true, CHECK);
894 if (ct == NULL) break;
895 _compilers[1]->set_num_compiler_threads(i + 1);
896 if (TraceCompilerThreads) {
897 ResourceMark rm;
898 MutexLocker mu(Threads_lock);
899 tty->print_cr("Added compiler thread %s (available memory: %dMB)",
900 ct->get_thread_name(), (int)(available_memory/M));
901 }
902 }
903 }
904
905 if (_c1_compile_queue != NULL) {
906 int old_c1_count = _compilers[0]->num_compiler_threads();
907 int new_c1_count = MIN3(_c1_compile_queue->size() / 2,
908 CompilationPolicy::policy()->compiler_count(CompLevel_simple),
909 (int)(available_memory / 100*M));
910
911 for (int i = old_c1_count; i < new_c1_count; i++) {
912 JavaThread *ct = make_thread(compiler1_object(i), _c1_compile_queue, _compilers[0], true, CHECK);
913 if (ct == NULL) break;
914 _compilers[0]->set_num_compiler_threads(i + 1);
915 if (TraceCompilerThreads) {
916 ResourceMark rm;
917 MutexLocker mu(Threads_lock);
918 tty->print_cr("Added compiler thread %s (available memory: %dMB)",
919 ct->get_thread_name(), (int)(available_memory/M));
920 }
921 }
922 }
923
924 CompileThread_lock->unlock();
925 }
926
927
928 /**
929 * Set the methods on the stack as on_stack so that redefine classes doesn't
930 * reclaim them. This method is executed at a safepoint.
931 */
932 void CompileBroker::mark_on_stack() {
933 assert(SafepointSynchronize::is_at_safepoint(), "sanity check");
934 // Since we are at a safepoint, we do not need a lock to access
935 // the compile queues.
936 if (_c2_compile_queue != NULL) {
937 _c2_compile_queue->mark_on_stack();
938 }
939 if (_c1_compile_queue != NULL) {
940 _c1_compile_queue->mark_on_stack();
941 }
942 }
943
944 // ------------------------------------------------------------------
945 // CompileBroker::compile_method
946 //
947 // Request compilation of a method.
948 void CompileBroker::compile_method_base(const methodHandle& method,
949 int osr_bci,
950 int comp_level,
951 const methodHandle& hot_method,
952 int hot_count,
953 CompileTask::CompileReason compile_reason,
954 bool blocking,
955 Thread* thread) {
956 guarantee(!method->is_abstract(), "cannot compile abstract methods");
957 assert(method->method_holder()->is_instance_klass(),
958 "sanity check");
959 assert(!method->method_holder()->is_not_initialized(),
960 "method holder must be initialized");
961 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys");
962
963 if (CIPrintRequests) {
964 tty->print("request: ");
965 method->print_short_name(tty);
966 if (osr_bci != InvocationEntryBci) {
967 tty->print(" osr_bci: %d", osr_bci);
968 }
969 tty->print(" level: %d comment: %s count: %d", comp_level, CompileTask::reason_name(compile_reason), hot_count);
970 if (!hot_method.is_null()) {
971 tty->print(" hot: ");
972 if (hot_method() != method()) {
973 hot_method->print_short_name(tty);
974 } else {
975 tty->print("yes");
976 }
977 }
978 tty->cr();
979 }
980
981 // A request has been made for compilation. Before we do any
982 // real work, check to see if the method has been compiled
983 // in the meantime with a definitive result.
984 if (compilation_is_complete(method, osr_bci, comp_level)) {
985 return;
986 }
987
988 #ifndef PRODUCT
989 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
990 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
991 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
992 return;
993 }
994 }
995 #endif
996
997 // If this method is already in the compile queue, then
998 // we do not block the current thread.
999 if (compilation_is_in_queue(method)) {
1000 // We may want to decay our counter a bit here to prevent
1001 // multiple denied requests for compilation. This is an
1002 // open compilation policy issue. Note: The other possibility,
1003 // in the case that this is a blocking compile request, is to have
1004 // all subsequent blocking requesters wait for completion of
1005 // ongoing compiles. Note that in this case we'll need a protocol
1006 // for freeing the associated compile tasks. [Or we could have
1007 // a single static monitor on which all these waiters sleep.]
1008 return;
1009 }
1010
1011 if (TieredCompilation) {
1012 // Tiered policy requires MethodCounters to exist before adding a method to
1013 // the queue. Create if we don't have them yet.
1014 method->get_method_counters(thread);
1015 }
1016
1017 // Outputs from the following MutexLocker block:
1018 CompileTask* task = NULL;
1019 CompileQueue* queue = compile_queue(comp_level);
1020
1021 // Acquire our lock.
1022 {
1023 MutexLocker locker(MethodCompileQueue_lock, thread);
1024
1025 // Make sure the method has not slipped into the queues since
1026 // last we checked; note that those checks were "fast bail-outs".
1027 // Here we need to be more careful, see 14012000 below.
1028 if (compilation_is_in_queue(method)) {
1029 return;
1030 }
1031
1032 // We need to check again to see if the compilation has
1033 // completed. A previous compilation may have registered
1034 // some result.
1035 if (compilation_is_complete(method, osr_bci, comp_level)) {
1036 return;
1037 }
1038
1039 // We now know that this compilation is not pending, complete,
1040 // or prohibited. Assign a compile_id to this compilation
1041 // and check to see if it is in our [Start..Stop) range.
1042 int compile_id = assign_compile_id(method, osr_bci);
1043 if (compile_id == 0) {
1044 // The compilation falls outside the allowed range.
1045 return;
1046 }
1047
1048 #if INCLUDE_JVMCI
1049 if (UseJVMCICompiler) {
1050 if (blocking) {
1051 // Don't allow blocking compiles for requests triggered by JVMCI.
1052 if (thread->is_Compiler_thread()) {
1053 blocking = false;
1054 }
1055
1056 // Don't allow blocking compiles if inside a class initializer or while performing class loading
1057 vframeStream vfst((JavaThread*) thread);
1058 for (; !vfst.at_end(); vfst.next()) {
1059 if (vfst.method()->is_static_initializer() ||
1060 (vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass()) &&
1061 vfst.method()->name() == vmSymbols::loadClass_name())) {
1062 blocking = false;
1063 break;
1064 }
1065 }
1066
1067 // Don't allow blocking compilation requests to JVMCI
1068 // if JVMCI itself is not yet initialized
1069 if (!JVMCIRuntime::is_HotSpotJVMCIRuntime_initialized() && compiler(comp_level)->is_jvmci()) {
1070 blocking = false;
1071 }
1072
1073 // Don't allow blocking compilation requests if we are in JVMCIRuntime::shutdown
1074 // to avoid deadlock between compiler thread(s) and threads run at shutdown
1075 // such as the DestroyJavaVM thread.
1076 if (JVMCIRuntime::shutdown_called()) {
1077 blocking = false;
1078 }
1079 }
1080 }
1081 #endif // INCLUDE_JVMCI
1082
1083 // We will enter the compilation in the queue.
1084 // 14012000: Note that this sets the queued_for_compile bits in
1085 // the target method. We can now reason that a method cannot be
1086 // queued for compilation more than once, as follows:
1087 // Before a thread queues a task for compilation, it first acquires
1088 // the compile queue lock, then checks if the method's queued bits
1089 // are set or it has already been compiled. Thus there can not be two
1090 // instances of a compilation task for the same method on the
1091 // compilation queue. Consider now the case where the compilation
1092 // thread has already removed a task for that method from the queue
1093 // and is in the midst of compiling it. In this case, the
1094 // queued_for_compile bits must be set in the method (and these
1095 // will be visible to the current thread, since the bits were set
1096 // under protection of the compile queue lock, which we hold now.
1097 // When the compilation completes, the compiler thread first sets
1098 // the compilation result and then clears the queued_for_compile
1099 // bits. Neither of these actions are protected by a barrier (or done
1100 // under the protection of a lock), so the only guarantee we have
1101 // (on machines with TSO (Total Store Order)) is that these values
1102 // will update in that order. As a result, the only combinations of
1103 // these bits that the current thread will see are, in temporal order:
1104 // <RESULT, QUEUE> :
1105 // <0, 1> : in compile queue, but not yet compiled
1106 // <1, 1> : compiled but queue bit not cleared
1107 // <1, 0> : compiled and queue bit cleared
1108 // Because we first check the queue bits then check the result bits,
1109 // we are assured that we cannot introduce a duplicate task.
1110 // Note that if we did the tests in the reverse order (i.e. check
1111 // result then check queued bit), we could get the result bit before
1112 // the compilation completed, and the queue bit after the compilation
1113 // completed, and end up introducing a "duplicate" (redundant) task.
1114 // In that case, the compiler thread should first check if a method
1115 // has already been compiled before trying to compile it.
1116 // NOTE: in the event that there are multiple compiler threads and
1117 // there is de-optimization/recompilation, things will get hairy,
1118 // and in that case it's best to protect both the testing (here) of
1119 // these bits, and their updating (here and elsewhere) under a
1120 // common lock.
1121 task = create_compile_task(queue,
1122 compile_id, method,
1123 osr_bci, comp_level,
1124 hot_method, hot_count, compile_reason,
1125 blocking);
1126 }
1127
1128 if (blocking) {
1129 wait_for_completion(task);
1130 }
1131 }
1132
1133 nmethod* CompileBroker::compile_method(const methodHandle& method, int osr_bci,
1134 int comp_level,
1135 const methodHandle& hot_method, int hot_count,
1136 CompileTask::CompileReason compile_reason,
1137 Thread* THREAD) {
1138 // Do nothing if compilebroker is not initalized or compiles are submitted on level none
1139 if (!_initialized || comp_level == CompLevel_none) {
1140 return NULL;
1141 }
1142
1143 AbstractCompiler *comp = CompileBroker::compiler(comp_level);
1144 assert(comp != NULL, "Ensure we have a compiler");
1145
1146 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, comp);
1147 nmethod* nm = CompileBroker::compile_method(method, osr_bci, comp_level, hot_method, hot_count, compile_reason, directive, THREAD);
1148 DirectivesStack::release(directive);
1149 return nm;
1150 }
1151
1152 nmethod* CompileBroker::compile_method(const methodHandle& method, int osr_bci,
1153 int comp_level,
1154 const methodHandle& hot_method, int hot_count,
1155 CompileTask::CompileReason compile_reason,
1156 DirectiveSet* directive,
1157 Thread* THREAD) {
1158
1159 // make sure arguments make sense
1160 assert(method->method_holder()->is_instance_klass(), "not an instance method");
1161 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
1162 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
1163 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized");
1164 assert(!TieredCompilation || comp_level <= TieredStopAtLevel, "Invalid compilation level");
1165 // allow any levels for WhiteBox
1166 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered");
1167 // return quickly if possible
1168
1169 // lock, make sure that the compilation
1170 // isn't prohibited in a straightforward way.
1171 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1172 if (comp == NULL || !comp->can_compile_method(method) ||
1173 compilation_is_prohibited(method, osr_bci, comp_level, directive->ExcludeOption)) {
1174 return NULL;
1175 }
1176
1177 #if INCLUDE_JVMCI
1178 if (comp->is_jvmci() && !JVMCIRuntime::can_initialize_JVMCI()) {
1179 return NULL;
1180 }
1181 #endif
1182
1183 if (osr_bci == InvocationEntryBci) {
1184 // standard compilation
1185 CompiledMethod* method_code = method->code();
1186 if (method_code != NULL && method_code->is_nmethod()) {
1187 if (compilation_is_complete(method, osr_bci, comp_level)) {
1188 return (nmethod*) method_code;
1189 }
1190 }
1191 if (method->is_not_compilable(comp_level)) {
1192 return NULL;
1193 }
1194 } else {
1195 // osr compilation
1196 #ifndef TIERED
1197 // seems like an assert of dubious value
1198 assert(comp_level == CompLevel_highest_tier,
1199 "all OSR compiles are assumed to be at a single compilation level");
1200 #endif // TIERED
1201 // We accept a higher level osr method
1202 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1203 if (nm != NULL) return nm;
1204 if (method->is_not_osr_compilable(comp_level)) return NULL;
1205 }
1206
1207 assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
1208 // some prerequisites that are compiler specific
1209 if (comp->is_c2()) {
1210 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL);
1211 // Resolve all classes seen in the signature of the method
1212 // we are compiling.
1213 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL);
1214 }
1215
1216 // If the method is native, do the lookup in the thread requesting
1217 // the compilation. Native lookups can load code, which is not
1218 // permitted during compilation.
1219 //
1220 // Note: A native method implies non-osr compilation which is
1221 // checked with an assertion at the entry of this method.
1222 if (method->is_native() && !method->is_method_handle_intrinsic()) {
1223 bool in_base_library;
1224 address adr = NativeLookup::lookup(method, in_base_library, THREAD);
1225 if (HAS_PENDING_EXCEPTION) {
1226 // In case of an exception looking up the method, we just forget
1227 // about it. The interpreter will kick-in and throw the exception.
1228 method->set_not_compilable(); // implies is_not_osr_compilable()
1229 CLEAR_PENDING_EXCEPTION;
1230 return NULL;
1231 }
1232 assert(method->has_native_function(), "must have native code by now");
1233 }
1234
1235 // RedefineClasses() has replaced this method; just return
1236 if (method->is_old()) {
1237 return NULL;
1238 }
1239
1240 // JVMTI -- post_compile_event requires jmethod_id() that may require
1241 // a lock the compiling thread can not acquire. Prefetch it here.
1242 if (JvmtiExport::should_post_compiled_method_load()) {
1243 method->jmethod_id();
1244 }
1245
1246 // do the compilation
1247 if (method->is_native()) {
1248 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) {
1249 // The following native methods:
1250 //
1251 // java.lang.Float.intBitsToFloat
1252 // java.lang.Float.floatToRawIntBits
1253 // java.lang.Double.longBitsToDouble
1254 // java.lang.Double.doubleToRawLongBits
1255 //
1256 // are called through the interpreter even if interpreter native stubs
1257 // are not preferred (i.e., calling through adapter handlers is preferred).
1258 // The reason is that on x86_32 signaling NaNs (sNaNs) are not preserved
1259 // if the version of the methods from the native libraries is called.
1260 // As the interpreter and the C2-intrinsified version of the methods preserves
1261 // sNaNs, that would result in an inconsistent way of handling of sNaNs.
1262 if ((UseSSE >= 1 &&
1263 (method->intrinsic_id() == vmIntrinsics::_intBitsToFloat ||
1264 method->intrinsic_id() == vmIntrinsics::_floatToRawIntBits)) ||
1265 (UseSSE >= 2 &&
1266 (method->intrinsic_id() == vmIntrinsics::_longBitsToDouble ||
1267 method->intrinsic_id() == vmIntrinsics::_doubleToRawLongBits))) {
1268 return NULL;
1269 }
1270
1271 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that
1272 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime).
1273 //
1274 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter
1275 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls.
1276 AdapterHandlerLibrary::create_native_wrapper(method);
1277 } else {
1278 return NULL;
1279 }
1280 } else {
1281 // If the compiler is shut off due to code cache getting full
1282 // fail out now so blocking compiles dont hang the java thread
1283 if (!should_compile_new_jobs()) {
1284 CompilationPolicy::policy()->delay_compilation(method());
1285 return NULL;
1286 }
1287 bool is_blocking = !directive->BackgroundCompilationOption || CompileTheWorld || ReplayCompiles;
1288 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, compile_reason, is_blocking, THREAD);
1289 }
1290
1291 // return requested nmethod
1292 // We accept a higher level osr method
1293 if (osr_bci == InvocationEntryBci) {
1294 CompiledMethod* code = method->code();
1295 if (code == NULL) {
1296 return (nmethod*) code;
1297 } else {
1298 return code->as_nmethod_or_null();
1299 }
1300 }
1301 return method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1302 }
1303
1304
1305 // ------------------------------------------------------------------
1306 // CompileBroker::compilation_is_complete
1307 //
1308 // See if compilation of this method is already complete.
1309 bool CompileBroker::compilation_is_complete(const methodHandle& method,
1310 int osr_bci,
1311 int comp_level) {
1312 bool is_osr = (osr_bci != standard_entry_bci);
1313 if (is_osr) {
1314 if (method->is_not_osr_compilable(comp_level)) {
1315 return true;
1316 } else {
1317 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
1318 return (result != NULL);
1319 }
1320 } else {
1321 if (method->is_not_compilable(comp_level)) {
1322 return true;
1323 } else {
1324 CompiledMethod* result = method->code();
1325 if (result == NULL) return false;
1326 return comp_level == result->comp_level();
1327 }
1328 }
1329 }
1330
1331
1332 /**
1333 * See if this compilation is already requested.
1334 *
1335 * Implementation note: there is only a single "is in queue" bit
1336 * for each method. This means that the check below is overly
1337 * conservative in the sense that an osr compilation in the queue
1338 * will block a normal compilation from entering the queue (and vice
1339 * versa). This can be remedied by a full queue search to disambiguate
1340 * cases. If it is deemed profitable, this may be done.
1341 */
1342 bool CompileBroker::compilation_is_in_queue(const methodHandle& method) {
1343 return method->queued_for_compilation();
1344 }
1345
1346 // ------------------------------------------------------------------
1347 // CompileBroker::compilation_is_prohibited
1348 //
1349 // See if this compilation is not allowed.
1350 bool CompileBroker::compilation_is_prohibited(const methodHandle& method, int osr_bci, int comp_level, bool excluded) {
1351 bool is_native = method->is_native();
1352 // Some compilers may not support the compilation of natives.
1353 AbstractCompiler *comp = compiler(comp_level);
1354 if (is_native &&
1355 (!CICompileNatives || comp == NULL || !comp->supports_native())) {
1356 method->set_not_compilable_quietly(comp_level);
1357 return true;
1358 }
1359
1360 bool is_osr = (osr_bci != standard_entry_bci);
1361 // Some compilers may not support on stack replacement.
1362 if (is_osr &&
1363 (!CICompileOSR || comp == NULL || !comp->supports_osr())) {
1364 method->set_not_osr_compilable(comp_level);
1365 return true;
1366 }
1367
1368 // The method may be explicitly excluded by the user.
1369 double scale;
1370 if (excluded || (CompilerOracle::has_option_value(method, "CompileThresholdScaling", scale) && scale == 0)) {
1371 bool quietly = CompilerOracle::should_exclude_quietly();
1372 if (PrintCompilation && !quietly) {
1373 // This does not happen quietly...
1374 ResourceMark rm;
1375 tty->print("### Excluding %s:%s",
1376 method->is_native() ? "generation of native wrapper" : "compile",
1377 (method->is_static() ? " static" : ""));
1378 method->print_short_name(tty);
1379 tty->cr();
1380 }
1381 method->set_not_compilable(comp_level, !quietly, "excluded by CompileCommand");
1382 }
1383
1384 return false;
1385 }
1386
1387 /**
1388 * Generate serialized IDs for compilation requests. If certain debugging flags are used
1389 * and the ID is not within the specified range, the method is not compiled and 0 is returned.
1390 * The function also allows to generate separate compilation IDs for OSR compilations.
1391 */
1392 int CompileBroker::assign_compile_id(const methodHandle& method, int osr_bci) {
1393 #ifdef ASSERT
1394 bool is_osr = (osr_bci != standard_entry_bci);
1395 int id;
1396 if (method->is_native()) {
1397 assert(!is_osr, "can't be osr");
1398 // Adapters, native wrappers and method handle intrinsics
1399 // should be generated always.
1400 return Atomic::add(1, &_compilation_id);
1401 } else if (CICountOSR && is_osr) {
1402 id = Atomic::add(1, &_osr_compilation_id);
1403 if (CIStartOSR <= id && id < CIStopOSR) {
1404 return id;
1405 }
1406 } else {
1407 id = Atomic::add(1, &_compilation_id);
1408 if (CIStart <= id && id < CIStop) {
1409 return id;
1410 }
1411 }
1412
1413 // Method was not in the appropriate compilation range.
1414 method->set_not_compilable_quietly();
1415 return 0;
1416 #else
1417 // CICountOSR is a develop flag and set to 'false' by default. In a product built,
1418 // only _compilation_id is incremented.
1419 return Atomic::add(1, &_compilation_id);
1420 #endif
1421 }
1422
1423 // ------------------------------------------------------------------
1424 // CompileBroker::assign_compile_id_unlocked
1425 //
1426 // Public wrapper for assign_compile_id that acquires the needed locks
1427 uint CompileBroker::assign_compile_id_unlocked(Thread* thread, const methodHandle& method, int osr_bci) {
1428 MutexLocker locker(MethodCompileQueue_lock, thread);
1429 return assign_compile_id(method, osr_bci);
1430 }
1431
1432 // ------------------------------------------------------------------
1433 // CompileBroker::preload_classes
1434 void CompileBroker::preload_classes(const methodHandle& method, TRAPS) {
1435 // Move this code over from c1_Compiler.cpp
1436 ShouldNotReachHere();
1437 }
1438
1439
1440 // ------------------------------------------------------------------
1441 // CompileBroker::create_compile_task
1442 //
1443 // Create a CompileTask object representing the current request for
1444 // compilation. Add this task to the queue.
1445 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1446 int compile_id,
1447 const methodHandle& method,
1448 int osr_bci,
1449 int comp_level,
1450 const methodHandle& hot_method,
1451 int hot_count,
1452 CompileTask::CompileReason compile_reason,
1453 bool blocking) {
1454 CompileTask* new_task = CompileTask::allocate();
1455 new_task->initialize(compile_id, method, osr_bci, comp_level,
1456 hot_method, hot_count, compile_reason,
1457 blocking);
1458 queue->add(new_task);
1459 return new_task;
1460 }
1461
1462 #if INCLUDE_JVMCI
1463 // The number of milliseconds to wait before checking if
1464 // JVMCI compilation has made progress.
1465 static const long JVMCI_COMPILATION_PROGRESS_WAIT_TIMESLICE = 1000;
1466
1467 // The number of JVMCI compilation progress checks that must fail
1468 // before unblocking a thread waiting for a blocking compilation.
1469 static const int JVMCI_COMPILATION_PROGRESS_WAIT_ATTEMPTS = 10;
1470
1471 /**
1472 * Waits for a JVMCI compiler to complete a given task. This thread
1473 * waits until either the task completes or it sees no JVMCI compilation
1474 * progress for N consecutive milliseconds where N is
1475 * JVMCI_COMPILATION_PROGRESS_WAIT_TIMESLICE *
1476 * JVMCI_COMPILATION_PROGRESS_WAIT_ATTEMPTS.
1477 *
1478 * @return true if this thread needs to free/recycle the task
1479 */
1480 bool CompileBroker::wait_for_jvmci_completion(JVMCICompiler* jvmci, CompileTask* task, JavaThread* thread) {
1481 MutexLocker waiter(task->lock(), thread);
1482 int progress_wait_attempts = 0;
1483 int methods_compiled = jvmci->methods_compiled();
1484 while (!task->is_complete() && !is_compilation_disabled_forever() &&
1485 task->lock()->wait(!Mutex::_no_safepoint_check_flag, JVMCI_COMPILATION_PROGRESS_WAIT_TIMESLICE)) {
1486 CompilerThread* jvmci_compiler_thread = task->jvmci_compiler_thread();
1487
1488 bool progress;
1489 if (jvmci_compiler_thread != NULL) {
1490 // If the JVMCI compiler thread is not blocked, we deem it to be making progress.
1491 progress = jvmci_compiler_thread->thread_state() != _thread_blocked;
1492 } else {
1493 // Still waiting on JVMCI compiler queue. This thread may be holding a lock
1494 // that all JVMCI compiler threads are blocked on. We use the counter for
1495 // successful JVMCI compilations to determine whether JVMCI compilation
1496 // is still making progress through the JVMCI compiler queue.
1497 progress = jvmci->methods_compiled() != methods_compiled;
1498 }
1499
1500 if (!progress) {
1501 if (++progress_wait_attempts == JVMCI_COMPILATION_PROGRESS_WAIT_ATTEMPTS) {
1502 if (PrintCompilation) {
1503 task->print(tty, "wait for blocking compilation timed out");
1504 }
1505 break;
1506 }
1507 } else {
1508 progress_wait_attempts = 0;
1509 if (jvmci_compiler_thread == NULL) {
1510 methods_compiled = jvmci->methods_compiled();
1511 }
1512 }
1513 }
1514 task->clear_waiter();
1515 return task->is_complete();
1516 }
1517 #endif
1518
1519 /**
1520 * Wait for the compilation task to complete.
1521 */
1522 void CompileBroker::wait_for_completion(CompileTask* task) {
1523 if (CIPrintCompileQueue) {
1524 ttyLocker ttyl;
1525 tty->print_cr("BLOCKING FOR COMPILE");
1526 }
1527
1528 assert(task->is_blocking(), "can only wait on blocking task");
1529
1530 JavaThread* thread = JavaThread::current();
1531 thread->set_blocked_on_compilation(true);
1532
1533 methodHandle method(thread, task->method());
1534 bool free_task;
1535 #if INCLUDE_JVMCI
1536 AbstractCompiler* comp = compiler(task->comp_level());
1537 if (comp->is_jvmci()) {
1538 free_task = wait_for_jvmci_completion((JVMCICompiler*) comp, task, thread);
1539 } else
1540 #endif
1541 {
1542 MutexLocker waiter(task->lock(), thread);
1543 free_task = true;
1544 while (!task->is_complete() && !is_compilation_disabled_forever()) {
1545 task->lock()->wait();
1546 }
1547 }
1548
1549 thread->set_blocked_on_compilation(false);
1550 if (free_task) {
1551 if (is_compilation_disabled_forever()) {
1552 CompileTask::free(task);
1553 return;
1554 }
1555
1556 // It is harmless to check this status without the lock, because
1557 // completion is a stable property (until the task object is recycled).
1558 assert(task->is_complete(), "Compilation should have completed");
1559 assert(task->code_handle() == NULL, "must be reset");
1560
1561 // By convention, the waiter is responsible for recycling a
1562 // blocking CompileTask. Since there is only one waiter ever
1563 // waiting on a CompileTask, we know that no one else will
1564 // be using this CompileTask; we can free it.
1565 CompileTask::free(task);
1566 }
1567 }
1568
1569 /**
1570 * Initialize compiler thread(s) + compiler object(s). The postcondition
1571 * of this function is that the compiler runtimes are initialized and that
1572 * compiler threads can start compiling.
1573 */
1574 bool CompileBroker::init_compiler_runtime() {
1575 CompilerThread* thread = CompilerThread::current();
1576 AbstractCompiler* comp = thread->compiler();
1577 // Final sanity check - the compiler object must exist
1578 guarantee(comp != NULL, "Compiler object must exist");
1579
1580 int system_dictionary_modification_counter;
1581 {
1582 MutexLocker locker(Compile_lock, thread);
1583 system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1584 }
1585
1586 {
1587 // Must switch to native to allocate ci_env
1588 ThreadToNativeFromVM ttn(thread);
1589 ciEnv ci_env(NULL, system_dictionary_modification_counter);
1590 // Cache Jvmti state
1591 ci_env.cache_jvmti_state();
1592 // Cache DTrace flags
1593 ci_env.cache_dtrace_flags();
1594
1595 // Switch back to VM state to do compiler initialization
1596 ThreadInVMfromNative tv(thread);
1597 ResetNoHandleMark rnhm;
1598
1599 // Perform per-thread and global initializations
1600 comp->initialize();
1601 }
1602
1603 if (comp->is_failed()) {
1604 disable_compilation_forever();
1605 // If compiler initialization failed, no compiler thread that is specific to a
1606 // particular compiler runtime will ever start to compile methods.
1607 shutdown_compiler_runtime(comp, thread);
1608 return false;
1609 }
1610
1611 // C1 specific check
1612 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) {
1613 warning("Initialization of %s thread failed (no space to run compilers)", thread->name());
1614 return false;
1615 }
1616
1617 return true;
1618 }
1619
1620 /**
1621 * If C1 and/or C2 initialization failed, we shut down all compilation.
1622 * We do this to keep things simple. This can be changed if it ever turns
1623 * out to be a problem.
1624 */
1625 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) {
1626 // Free buffer blob, if allocated
1627 if (thread->get_buffer_blob() != NULL) {
1628 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1629 CodeCache::free(thread->get_buffer_blob());
1630 }
1631
1632 if (comp->should_perform_shutdown()) {
1633 // There are two reasons for shutting down the compiler
1634 // 1) compiler runtime initialization failed
1635 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing
1636 warning("%s initialization failed. Shutting down all compilers", comp->name());
1637
1638 // Only one thread per compiler runtime object enters here
1639 // Set state to shut down
1640 comp->set_shut_down();
1641
1642 // Delete all queued compilation tasks to make compiler threads exit faster.
1643 if (_c1_compile_queue != NULL) {
1644 _c1_compile_queue->free_all();
1645 }
1646
1647 if (_c2_compile_queue != NULL) {
1648 _c2_compile_queue->free_all();
1649 }
1650
1651 // Set flags so that we continue execution with using interpreter only.
1652 UseCompiler = false;
1653 UseInterpreter = true;
1654
1655 // We could delete compiler runtimes also. However, there are references to
1656 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then
1657 // fail. This can be done later if necessary.
1658 }
1659 }
1660
1661 // ------------------------------------------------------------------
1662 // CompileBroker::compiler_thread_loop
1663 //
1664 // The main loop run by a CompilerThread.
1665 void CompileBroker::compiler_thread_loop() {
1666 CompilerThread* thread = CompilerThread::current();
1667 CompileQueue* queue = thread->queue();
1668 // For the thread that initializes the ciObjectFactory
1669 // this resource mark holds all the shared objects
1670 ResourceMark rm;
1671
1672 // First thread to get here will initialize the compiler interface
1673
1674 {
1675 ASSERT_IN_VM;
1676 MutexLocker only_one (CompileThread_lock, thread);
1677 if (!ciObjectFactory::is_initialized()) {
1678 ciObjectFactory::initialize();
1679 }
1680 }
1681
1682 // Open a log.
1683 if (LogCompilation) {
1684 init_compiler_thread_log();
1685 }
1686 CompileLog* log = thread->log();
1687 if (log != NULL) {
1688 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'",
1689 thread->name(),
1690 os::current_thread_id(),
1691 os::current_process_id());
1692 log->stamp();
1693 log->end_elem();
1694 }
1695
1696 // If compiler thread/runtime initialization fails, exit the compiler thread
1697 if (!init_compiler_runtime()) {
1698 return;
1699 }
1700
1701 // Poll for new compilation tasks as long as the JVM runs. Compilation
1702 // should only be disabled if something went wrong while initializing the
1703 // compiler runtimes. This, in turn, should not happen. The only known case
1704 // when compiler runtime initialization fails is if there is not enough free
1705 // space in the code cache to generate the necessary stubs, etc.
1706 while (!is_compilation_disabled_forever()) {
1707 // We need this HandleMark to avoid leaking VM handles.
1708 HandleMark hm(thread);
1709
1710 CompileTask* task = queue->get();
1711 if (task == NULL) {
1712 if (UseDynamicNumberOfCompilerThreads) {
1713 // Access compiler_count under lock to enforce consistency.
1714 MutexLocker only_one(CompileThread_lock);
1715 if (can_remove(thread, true)) {
1716 if (TraceCompilerThreads) {
1717 tty->print_cr("Removing compiler thread %s", thread->name());
1718 }
1719 return; // Stop this thread.
1720 }
1721 }
1722 continue;
1723 }
1724
1725 if (UseDynamicNumberOfCompilerThreads) {
1726 possibly_add_compiler_threads();
1727 }
1728
1729 // Give compiler threads an extra quanta. They tend to be bursty and
1730 // this helps the compiler to finish up the job.
1731 if (CompilerThreadHintNoPreempt) {
1732 os::hint_no_preempt();
1733 }
1734
1735 // Assign the task to the current thread. Mark this compilation
1736 // thread as active for the profiler.
1737 CompileTaskWrapper ctw(task);
1738 nmethodLocker result_handle; // (handle for the nmethod produced by this task)
1739 task->set_code_handle(&result_handle);
1740 methodHandle method(thread, task->method());
1741
1742 // Never compile a method if breakpoints are present in it
1743 if (method()->number_of_breakpoints() == 0) {
1744 // Compile the method.
1745 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
1746 invoke_compiler_on_method(task);
1747 } else {
1748 // After compilation is disabled, remove remaining methods from queue
1749 method->clear_queued_for_compilation();
1750 task->set_failure_reason("compilation is disabled");
1751 }
1752 }
1753 }
1754
1755 // Shut down compiler runtime
1756 shutdown_compiler_runtime(thread->compiler(), thread);
1757 }
1758
1759 // ------------------------------------------------------------------
1760 // CompileBroker::init_compiler_thread_log
1761 //
1762 // Set up state required by +LogCompilation.
1763 void CompileBroker::init_compiler_thread_log() {
1764 CompilerThread* thread = CompilerThread::current();
1765 char file_name[4*K];
1766 FILE* fp = NULL;
1767 intx thread_id = os::current_thread_id();
1768 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
1769 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
1770 if (dir == NULL) {
1771 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log",
1772 thread_id, os::current_process_id());
1773 } else {
1774 jio_snprintf(file_name, sizeof(file_name),
1775 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
1776 os::file_separator(), thread_id, os::current_process_id());
1777 }
1778
1779 fp = fopen(file_name, "wt");
1780 if (fp != NULL) {
1781 if (LogCompilation && Verbose) {
1782 tty->print_cr("Opening compilation log %s", file_name);
1783 }
1784 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id);
1785 if (log == NULL) {
1786 fclose(fp);
1787 return;
1788 }
1789 thread->init_log(log);
1790
1791 if (xtty != NULL) {
1792 ttyLocker ttyl;
1793 // Record any per thread log files
1794 xtty->elem("thread_logfile thread='" INTX_FORMAT "' filename='%s'", thread_id, file_name);
1795 }
1796 return;
1797 }
1798 }
1799 warning("Cannot open log file: %s", file_name);
1800 }
1801
1802 void CompileBroker::log_metaspace_failure() {
1803 const char* message = "some methods may not be compiled because metaspace "
1804 "is out of memory";
1805 if (_compilation_log != NULL) {
1806 _compilation_log->log_metaspace_failure(message);
1807 }
1808 if (PrintCompilation) {
1809 tty->print_cr("COMPILE PROFILING SKIPPED: %s", message);
1810 }
1811 }
1812
1813
1814 // ------------------------------------------------------------------
1815 // CompileBroker::set_should_block
1816 //
1817 // Set _should_block.
1818 // Call this from the VM, with Threads_lock held and a safepoint requested.
1819 void CompileBroker::set_should_block() {
1820 assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
1821 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
1822 #ifndef PRODUCT
1823 if (PrintCompilation && (Verbose || WizardMode))
1824 tty->print_cr("notifying compiler thread pool to block");
1825 #endif
1826 _should_block = true;
1827 }
1828
1829 // ------------------------------------------------------------------
1830 // CompileBroker::maybe_block
1831 //
1832 // Call this from the compiler at convenient points, to poll for _should_block.
1833 void CompileBroker::maybe_block() {
1834 if (_should_block) {
1835 #ifndef PRODUCT
1836 if (PrintCompilation && (Verbose || WizardMode))
1837 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", p2i(Thread::current()));
1838 #endif
1839 ThreadInVMfromNative tivfn(JavaThread::current());
1840 }
1841 }
1842
1843 // wrapper for CodeCache::print_summary()
1844 static void codecache_print(bool detailed)
1845 {
1846 ResourceMark rm;
1847 stringStream s;
1848 // Dump code cache into a buffer before locking the tty,
1849 {
1850 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1851 CodeCache::print_summary(&s, detailed);
1852 }
1853 ttyLocker ttyl;
1854 tty->print("%s", s.as_string());
1855 }
1856
1857 // wrapper for CodeCache::print_summary() using outputStream
1858 static void codecache_print(outputStream* out, bool detailed) {
1859 ResourceMark rm;
1860 stringStream s;
1861
1862 // Dump code cache into a buffer
1863 {
1864 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1865 CodeCache::print_summary(&s, detailed);
1866 }
1867
1868 char* remaining_log = s.as_string();
1869 while (*remaining_log != '\0') {
1870 char* eol = strchr(remaining_log, '\n');
1871 if (eol == NULL) {
1872 out->print_cr("%s", remaining_log);
1873 remaining_log = remaining_log + strlen(remaining_log);
1874 } else {
1875 *eol = '\0';
1876 out->print_cr("%s", remaining_log);
1877 remaining_log = eol + 1;
1878 }
1879 }
1880 }
1881
1882 void CompileBroker::post_compile(CompilerThread* thread, CompileTask* task, EventCompilation& event, bool success, ciEnv* ci_env) {
1883
1884 if (success) {
1885 task->mark_success();
1886 if (ci_env != NULL) {
1887 task->set_num_inlined_bytecodes(ci_env->num_inlined_bytecodes());
1888 }
1889 if (_compilation_log != NULL) {
1890 nmethod* code = task->code();
1891 if (code != NULL) {
1892 _compilation_log->log_nmethod(thread, code);
1893 }
1894 }
1895 }
1896
1897 // simulate crash during compilation
1898 assert(task->compile_id() != CICrashAt, "just as planned");
1899 if (event.should_commit()) {
1900 event.set_method(task->method());
1901 event.set_compileId(task->compile_id());
1902 event.set_compileLevel(task->comp_level());
1903 event.set_succeded(task->is_success());
1904 event.set_isOsr(task->osr_bci() != CompileBroker::standard_entry_bci);
1905 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size());
1906 event.set_inlinedBytes(task->num_inlined_bytecodes());
1907 event.commit();
1908 }
1909 }
1910
1911 int DirectivesStack::_depth = 0;
1912 CompilerDirectives* DirectivesStack::_top = NULL;
1913 CompilerDirectives* DirectivesStack::_bottom = NULL;
1914
1915 // ------------------------------------------------------------------
1916 // CompileBroker::invoke_compiler_on_method
1917 //
1918 // Compile a method.
1919 //
1920 void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
1921 task->print_ul();
1922 if (PrintCompilation) {
1923 ResourceMark rm;
1924 task->print_tty();
1925 }
1926 elapsedTimer time;
1927
1928 CompilerThread* thread = CompilerThread::current();
1929 ResourceMark rm(thread);
1930
1931 if (LogEvents) {
1932 _compilation_log->log_compile(thread, task);
1933 }
1934
1935 // Common flags.
1936 uint compile_id = task->compile_id();
1937 int osr_bci = task->osr_bci();
1938 bool is_osr = (osr_bci != standard_entry_bci);
1939 bool should_log = (thread->log() != NULL);
1940 bool should_break = false;
1941 const int task_level = task->comp_level();
1942 AbstractCompiler* comp = task->compiler();
1943
1944 DirectiveSet* directive;
1945 {
1946 // create the handle inside it's own block so it can't
1947 // accidentally be referenced once the thread transitions to
1948 // native. The NoHandleMark before the transition should catch
1949 // any cases where this occurs in the future.
1950 methodHandle method(thread, task->method());
1951 assert(!method->is_native(), "no longer compile natives");
1952
1953 // Look up matching directives
1954 directive = DirectivesStack::getMatchingDirective(method, comp);
1955
1956 // Save information about this method in case of failure.
1957 set_last_compile(thread, method, is_osr, task_level);
1958
1959 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level));
1960 }
1961
1962 should_break = directive->BreakAtExecuteOption || task->check_break_at_flags();
1963 if (should_log && !directive->LogOption) {
1964 should_log = false;
1965 }
1966
1967 // Allocate a new set of JNI handles.
1968 push_jni_handle_block();
1969 Method* target_handle = task->method();
1970 int compilable = ciEnv::MethodCompilable;
1971 const char* failure_reason = NULL;
1972 const char* retry_message = NULL;
1973
1974 int system_dictionary_modification_counter;
1975 {
1976 MutexLocker locker(Compile_lock, thread);
1977 system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1978 }
1979
1980 #if INCLUDE_JVMCI
1981 if (UseJVMCICompiler && comp != NULL && comp->is_jvmci()) {
1982 JVMCICompiler* jvmci = (JVMCICompiler*) comp;
1983
1984 TraceTime t1("compilation", &time);
1985 EventCompilation event;
1986
1987 // Skip redefined methods
1988 if (target_handle->is_old()) {
1989 failure_reason = "redefined method";
1990 retry_message = "not retryable";
1991 compilable = ciEnv::MethodCompilable_never;
1992 } else {
1993 JVMCIEnv env(task, system_dictionary_modification_counter);
1994 methodHandle method(thread, target_handle);
1995 jvmci->compile_method(method, osr_bci, &env);
1996
1997 failure_reason = env.failure_reason();
1998 if (!env.retryable()) {
1999 retry_message = "not retryable";
2000 compilable = ciEnv::MethodCompilable_not_at_tier;
2001 }
2002 }
2003 post_compile(thread, task, event, task->code() != NULL, NULL);
2004
2005 } else
2006 #endif // INCLUDE_JVMCI
2007 {
2008 NoHandleMark nhm;
2009 ThreadToNativeFromVM ttn(thread);
2010
2011 ciEnv ci_env(task, system_dictionary_modification_counter);
2012 if (should_break) {
2013 ci_env.set_break_at_compile(true);
2014 }
2015 if (should_log) {
2016 ci_env.set_log(thread->log());
2017 }
2018 assert(thread->env() == &ci_env, "set by ci_env");
2019 // The thread-env() field is cleared in ~CompileTaskWrapper.
2020
2021 // Cache Jvmti state
2022 ci_env.cache_jvmti_state();
2023
2024 // Cache DTrace flags
2025 ci_env.cache_dtrace_flags();
2026
2027 ciMethod* target = ci_env.get_method_from_handle(target_handle);
2028
2029 TraceTime t1("compilation", &time);
2030 EventCompilation event;
2031
2032 if (comp == NULL) {
2033 ci_env.record_method_not_compilable("no compiler", !TieredCompilation);
2034 } else {
2035 if (WhiteBoxAPI && WhiteBox::compilation_locked) {
2036 MonitorLockerEx locker(Compilation_lock, Mutex::_no_safepoint_check_flag);
2037 while (WhiteBox::compilation_locked) {
2038 locker.wait(Mutex::_no_safepoint_check_flag);
2039 }
2040 }
2041 comp->compile_method(&ci_env, target, osr_bci, directive);
2042 }
2043
2044 if (!ci_env.failing() && task->code() == NULL) {
2045 //assert(false, "compiler should always document failure");
2046 // The compiler elected, without comment, not to register a result.
2047 // Do not attempt further compilations of this method.
2048 ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
2049 }
2050
2051 // Copy this bit to the enclosing block:
2052 compilable = ci_env.compilable();
2053
2054 if (ci_env.failing()) {
2055 failure_reason = ci_env.failure_reason();
2056 retry_message = ci_env.retry_message();
2057 ci_env.report_failure(failure_reason);
2058 }
2059
2060 post_compile(thread, task, event, !ci_env.failing(), &ci_env);
2061 }
2062 // Remove the JNI handle block after the ciEnv destructor has run in
2063 // the previous block.
2064 pop_jni_handle_block();
2065
2066 if (failure_reason != NULL) {
2067 task->set_failure_reason(failure_reason);
2068 if (_compilation_log != NULL) {
2069 _compilation_log->log_failure(thread, task, failure_reason, retry_message);
2070 }
2071 if (PrintCompilation) {
2072 FormatBufferResource msg = retry_message != NULL ?
2073 FormatBufferResource("COMPILE SKIPPED: %s (%s)", failure_reason, retry_message) :
2074 FormatBufferResource("COMPILE SKIPPED: %s", failure_reason);
2075 task->print(tty, msg);
2076 }
2077 }
2078
2079 methodHandle method(thread, task->method());
2080
2081 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success());
2082
2083 collect_statistics(thread, time, task);
2084
2085 nmethod* nm = task->code();
2086 if (nm != NULL) {
2087 nm->maybe_print_nmethod(directive);
2088 }
2089 DirectivesStack::release(directive);
2090
2091 if (PrintCompilation && PrintCompilation2) {
2092 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp
2093 tty->print("%4d ", compile_id); // print compilation number
2094 tty->print("%s ", (is_osr ? "%" : " "));
2095 if (task->code() != NULL) {
2096 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size());
2097 }
2098 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes());
2099 }
2100
2101 Log(compilation, codecache) log;
2102 if (log.is_debug()) {
2103 LogStream ls(log.debug());
2104 codecache_print(&ls, /* detailed= */ false);
2105 }
2106 if (PrintCodeCacheOnCompilation) {
2107 codecache_print(/* detailed= */ false);
2108 }
2109 // Disable compilation, if required.
2110 switch (compilable) {
2111 case ciEnv::MethodCompilable_never:
2112 if (is_osr)
2113 method->set_not_osr_compilable_quietly();
2114 else
2115 method->set_not_compilable_quietly();
2116 break;
2117 case ciEnv::MethodCompilable_not_at_tier:
2118 if (is_osr)
2119 method->set_not_osr_compilable_quietly(task_level);
2120 else
2121 method->set_not_compilable_quietly(task_level);
2122 break;
2123 }
2124
2125 // Note that the queued_for_compilation bits are cleared without
2126 // protection of a mutex. [They were set by the requester thread,
2127 // when adding the task to the compile queue -- at which time the
2128 // compile queue lock was held. Subsequently, we acquired the compile
2129 // queue lock to get this task off the compile queue; thus (to belabour
2130 // the point somewhat) our clearing of the bits must be occurring
2131 // only after the setting of the bits. See also 14012000 above.
2132 method->clear_queued_for_compilation();
2133
2134 #ifdef ASSERT
2135 if (CollectedHeap::fired_fake_oom()) {
2136 // The current compile received a fake OOM during compilation so
2137 // go ahead and exit the VM since the test apparently succeeded
2138 tty->print_cr("*** Shutting down VM after successful fake OOM");
2139 vm_exit(0);
2140 }
2141 #endif
2142 }
2143
2144 /**
2145 * The CodeCache is full. Print warning and disable compilation.
2146 * Schedule code cache cleaning so compilation can continue later.
2147 * This function needs to be called only from CodeCache::allocate(),
2148 * since we currently handle a full code cache uniformly.
2149 */
2150 void CompileBroker::handle_full_code_cache(int code_blob_type) {
2151 UseInterpreter = true;
2152 if (UseCompiler || AlwaysCompileLoopMethods ) {
2153 if (xtty != NULL) {
2154 ResourceMark rm;
2155 stringStream s;
2156 // Dump code cache state into a buffer before locking the tty,
2157 // because log_state() will use locks causing lock conflicts.
2158 CodeCache::log_state(&s);
2159 // Lock to prevent tearing
2160 ttyLocker ttyl;
2161 xtty->begin_elem("code_cache_full");
2162 xtty->print("%s", s.as_string());
2163 xtty->stamp();
2164 xtty->end_elem();
2165 }
2166
2167 #ifndef PRODUCT
2168 if (CompileTheWorld || ExitOnFullCodeCache) {
2169 codecache_print(/* detailed= */ true);
2170 before_exit(JavaThread::current());
2171 exit_globals(); // will delete tty
2172 vm_direct_exit(CompileTheWorld ? 0 : 1);
2173 }
2174 #endif
2175 if (UseCodeCacheFlushing) {
2176 // Since code cache is full, immediately stop new compiles
2177 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) {
2178 NMethodSweeper::log_sweep("disable_compiler");
2179 }
2180 } else {
2181 disable_compilation_forever();
2182 }
2183
2184 CodeCache::report_codemem_full(code_blob_type, should_print_compiler_warning());
2185 }
2186 }
2187
2188 // ------------------------------------------------------------------
2189 // CompileBroker::set_last_compile
2190 //
2191 // Record this compilation for debugging purposes.
2192 void CompileBroker::set_last_compile(CompilerThread* thread, const methodHandle& method, bool is_osr, int comp_level) {
2193 ResourceMark rm;
2194 char* method_name = method->name()->as_C_string();
2195 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
2196 _last_method_compiled[CompileBroker::name_buffer_length - 1] = '\0'; // ensure null terminated
2197 char current_method[CompilerCounters::cmname_buffer_length];
2198 size_t maxLen = CompilerCounters::cmname_buffer_length;
2199
2200 if (UsePerfData) {
2201 const char* class_name = method->method_holder()->name()->as_C_string();
2202
2203 size_t s1len = strlen(class_name);
2204 size_t s2len = strlen(method_name);
2205
2206 // check if we need to truncate the string
2207 if (s1len + s2len + 2 > maxLen) {
2208
2209 // the strategy is to lop off the leading characters of the
2210 // class name and the trailing characters of the method name.
2211
2212 if (s2len + 2 > maxLen) {
2213 // lop of the entire class name string, let snprintf handle
2214 // truncation of the method name.
2215 class_name += s1len; // null string
2216 }
2217 else {
2218 // lop off the extra characters from the front of the class name
2219 class_name += ((s1len + s2len + 2) - maxLen);
2220 }
2221 }
2222
2223 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
2224 }
2225
2226 if (CICountOSR && is_osr) {
2227 _last_compile_type = osr_compile;
2228 } else {
2229 _last_compile_type = normal_compile;
2230 }
2231 _last_compile_level = comp_level;
2232
2233 if (UsePerfData) {
2234 CompilerCounters* counters = thread->counters();
2235 counters->set_current_method(current_method);
2236 counters->set_compile_type((jlong)_last_compile_type);
2237 }
2238 }
2239
2240
2241 // ------------------------------------------------------------------
2242 // CompileBroker::push_jni_handle_block
2243 //
2244 // Push on a new block of JNI handles.
2245 void CompileBroker::push_jni_handle_block() {
2246 JavaThread* thread = JavaThread::current();
2247
2248 // Allocate a new block for JNI handles.
2249 // Inlined code from jni_PushLocalFrame()
2250 JNIHandleBlock* java_handles = thread->active_handles();
2251 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
2252 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
2253 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
2254 thread->set_active_handles(compile_handles);
2255 }
2256
2257
2258 // ------------------------------------------------------------------
2259 // CompileBroker::pop_jni_handle_block
2260 //
2261 // Pop off the current block of JNI handles.
2262 void CompileBroker::pop_jni_handle_block() {
2263 JavaThread* thread = JavaThread::current();
2264
2265 // Release our JNI handle block
2266 JNIHandleBlock* compile_handles = thread->active_handles();
2267 JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
2268 thread->set_active_handles(java_handles);
2269 compile_handles->set_pop_frame_link(NULL);
2270 JNIHandleBlock::release_block(compile_handles, thread); // may block
2271 }
2272
2273 // ------------------------------------------------------------------
2274 // CompileBroker::collect_statistics
2275 //
2276 // Collect statistics about the compilation.
2277
2278 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
2279 bool success = task->is_success();
2280 methodHandle method (thread, task->method());
2281 uint compile_id = task->compile_id();
2282 bool is_osr = (task->osr_bci() != standard_entry_bci);
2283 nmethod* code = task->code();
2284 CompilerCounters* counters = thread->counters();
2285
2286 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
2287 MutexLocker locker(CompileStatistics_lock);
2288
2289 // _perf variables are production performance counters which are
2290 // updated regardless of the setting of the CITime and CITimeEach flags
2291 //
2292
2293 // account all time, including bailouts and failures in this counter;
2294 // C1 and C2 counters are counting both successful and unsuccessful compiles
2295 _t_total_compilation.add(time);
2296
2297 if (!success) {
2298 _total_bailout_count++;
2299 if (UsePerfData) {
2300 _perf_last_failed_method->set_value(counters->current_method());
2301 _perf_last_failed_type->set_value(counters->compile_type());
2302 _perf_total_bailout_count->inc();
2303 }
2304 _t_bailedout_compilation.add(time);
2305 } else if (code == NULL) {
2306 if (UsePerfData) {
2307 _perf_last_invalidated_method->set_value(counters->current_method());
2308 _perf_last_invalidated_type->set_value(counters->compile_type());
2309 _perf_total_invalidated_count->inc();
2310 }
2311 _total_invalidated_count++;
2312 _t_invalidated_compilation.add(time);
2313 } else {
2314 // Compilation succeeded
2315
2316 // update compilation ticks - used by the implementation of
2317 // java.lang.management.CompilationMBean
2318 _perf_total_compilation->inc(time.ticks());
2319 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time;
2320
2321 if (CITime) {
2322 int bytes_compiled = method->code_size() + task->num_inlined_bytecodes();
2323 if (is_osr) {
2324 _t_osr_compilation.add(time);
2325 _sum_osr_bytes_compiled += bytes_compiled;
2326 } else {
2327 _t_standard_compilation.add(time);
2328 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
2329 }
2330
2331 #if INCLUDE_JVMCI
2332 AbstractCompiler* comp = compiler(task->comp_level());
2333 if (comp) {
2334 CompilerStatistics* stats = comp->stats();
2335 if (stats) {
2336 if (is_osr) {
2337 stats->_osr.update(time, bytes_compiled);
2338 } else {
2339 stats->_standard.update(time, bytes_compiled);
2340 }
2341 stats->_nmethods_size += code->total_size();
2342 stats->_nmethods_code_size += code->insts_size();
2343 } else { // if (!stats)
2344 assert(false, "Compiler statistics object must exist");
2345 }
2346 } else { // if (!comp)
2347 assert(false, "Compiler object must exist");
2348 }
2349 #endif // INCLUDE_JVMCI
2350 }
2351
2352 if (UsePerfData) {
2353 // save the name of the last method compiled
2354 _perf_last_method->set_value(counters->current_method());
2355 _perf_last_compile_type->set_value(counters->compile_type());
2356 _perf_last_compile_size->set_value(method->code_size() +
2357 task->num_inlined_bytecodes());
2358 if (is_osr) {
2359 _perf_osr_compilation->inc(time.ticks());
2360 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
2361 } else {
2362 _perf_standard_compilation->inc(time.ticks());
2363 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
2364 }
2365 }
2366
2367 if (CITimeEach) {
2368 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
2369 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
2370 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
2371 }
2372
2373 // Collect counts of successful compilations
2374 _sum_nmethod_size += code->total_size();
2375 _sum_nmethod_code_size += code->insts_size();
2376 _total_compile_count++;
2377
2378 if (UsePerfData) {
2379 _perf_sum_nmethod_size->inc( code->total_size());
2380 _perf_sum_nmethod_code_size->inc(code->insts_size());
2381 _perf_total_compile_count->inc();
2382 }
2383
2384 if (is_osr) {
2385 if (UsePerfData) _perf_total_osr_compile_count->inc();
2386 _total_osr_compile_count++;
2387 } else {
2388 if (UsePerfData) _perf_total_standard_compile_count->inc();
2389 _total_standard_compile_count++;
2390 }
2391 }
2392 // set the current method for the thread to null
2393 if (UsePerfData) counters->set_current_method("");
2394 }
2395
2396 const char* CompileBroker::compiler_name(int comp_level) {
2397 AbstractCompiler *comp = CompileBroker::compiler(comp_level);
2398 if (comp == NULL) {
2399 return "no compiler";
2400 } else {
2401 return (comp->name());
2402 }
2403 }
2404
2405 #if INCLUDE_JVMCI
2406 void CompileBroker::print_times(AbstractCompiler* comp) {
2407 CompilerStatistics* stats = comp->stats();
2408 if (stats) {
2409 tty->print_cr(" %s {speed: %d bytes/s; standard: %6.3f s, %d bytes, %d methods; osr: %6.3f s, %d bytes, %d methods; nmethods_size: %d bytes; nmethods_code_size: %d bytes}",
2410 comp->name(), stats->bytes_per_second(),
2411 stats->_standard._time.seconds(), stats->_standard._bytes, stats->_standard._count,
2412 stats->_osr._time.seconds(), stats->_osr._bytes, stats->_osr._count,
2413 stats->_nmethods_size, stats->_nmethods_code_size);
2414 } else { // if (!stats)
2415 assert(false, "Compiler statistics object must exist");
2416 }
2417 comp->print_timers();
2418 }
2419 #endif // INCLUDE_JVMCI
2420
2421 void CompileBroker::print_times(bool per_compiler, bool aggregate) {
2422 #if INCLUDE_JVMCI
2423 elapsedTimer standard_compilation;
2424 elapsedTimer total_compilation;
2425 elapsedTimer osr_compilation;
2426
2427 int standard_bytes_compiled = 0;
2428 int osr_bytes_compiled = 0;
2429
2430 int standard_compile_count = 0;
2431 int osr_compile_count = 0;
2432 int total_compile_count = 0;
2433
2434 int nmethods_size = 0;
2435 int nmethods_code_size = 0;
2436 bool printedHeader = false;
2437
2438 for (unsigned int i = 0; i < sizeof(_compilers) / sizeof(AbstractCompiler*); i++) {
2439 AbstractCompiler* comp = _compilers[i];
2440 if (comp != NULL) {
2441 if (per_compiler && aggregate && !printedHeader) {
2442 printedHeader = true;
2443 tty->cr();
2444 tty->print_cr("Individual compiler times (for compiled methods only)");
2445 tty->print_cr("------------------------------------------------");
2446 tty->cr();
2447 }
2448 CompilerStatistics* stats = comp->stats();
2449
2450 if (stats) {
2451 standard_compilation.add(stats->_standard._time);
2452 osr_compilation.add(stats->_osr._time);
2453
2454 standard_bytes_compiled += stats->_standard._bytes;
2455 osr_bytes_compiled += stats->_osr._bytes;
2456
2457 standard_compile_count += stats->_standard._count;
2458 osr_compile_count += stats->_osr._count;
2459
2460 nmethods_size += stats->_nmethods_size;
2461 nmethods_code_size += stats->_nmethods_code_size;
2462 } else { // if (!stats)
2463 assert(false, "Compiler statistics object must exist");
2464 }
2465
2466 if (per_compiler) {
2467 print_times(comp);
2468 }
2469 }
2470 }
2471 total_compile_count = osr_compile_count + standard_compile_count;
2472 total_compilation.add(osr_compilation);
2473 total_compilation.add(standard_compilation);
2474
2475 // In hosted mode, print the JVMCI compiler specific counters manually.
2476 if (!UseJVMCICompiler) {
2477 JVMCICompiler::print_compilation_timers();
2478 }
2479 #else // INCLUDE_JVMCI
2480 elapsedTimer standard_compilation = CompileBroker::_t_standard_compilation;
2481 elapsedTimer osr_compilation = CompileBroker::_t_osr_compilation;
2482 elapsedTimer total_compilation = CompileBroker::_t_total_compilation;
2483
2484 int standard_bytes_compiled = CompileBroker::_sum_standard_bytes_compiled;
2485 int osr_bytes_compiled = CompileBroker::_sum_osr_bytes_compiled;
2486
2487 int standard_compile_count = CompileBroker::_total_standard_compile_count;
2488 int osr_compile_count = CompileBroker::_total_osr_compile_count;
2489 int total_compile_count = CompileBroker::_total_compile_count;
2490
2491 int nmethods_size = CompileBroker::_sum_nmethod_code_size;
2492 int nmethods_code_size = CompileBroker::_sum_nmethod_size;
2493 #endif // INCLUDE_JVMCI
2494
2495 if (!aggregate) {
2496 return;
2497 }
2498 tty->cr();
2499 tty->print_cr("Accumulated compiler times");
2500 tty->print_cr("----------------------------------------------------------");
2501 //0000000000111111111122222222223333333333444444444455555555556666666666
2502 //0123456789012345678901234567890123456789012345678901234567890123456789
2503 tty->print_cr(" Total compilation time : %7.3f s", total_compilation.seconds());
2504 tty->print_cr(" Standard compilation : %7.3f s, Average : %2.3f s",
2505 standard_compilation.seconds(),
2506 standard_compilation.seconds() / standard_compile_count);
2507 tty->print_cr(" Bailed out compilation : %7.3f s, Average : %2.3f s",
2508 CompileBroker::_t_bailedout_compilation.seconds(),
2509 CompileBroker::_t_bailedout_compilation.seconds() / CompileBroker::_total_bailout_count);
2510 tty->print_cr(" On stack replacement : %7.3f s, Average : %2.3f s",
2511 osr_compilation.seconds(),
2512 osr_compilation.seconds() / osr_compile_count);
2513 tty->print_cr(" Invalidated : %7.3f s, Average : %2.3f s",
2514 CompileBroker::_t_invalidated_compilation.seconds(),
2515 CompileBroker::_t_invalidated_compilation.seconds() / CompileBroker::_total_invalidated_count);
2516
2517 AbstractCompiler *comp = compiler(CompLevel_simple);
2518 if (comp != NULL) {
2519 tty->cr();
2520 comp->print_timers();
2521 }
2522 comp = compiler(CompLevel_full_optimization);
2523 if (comp != NULL) {
2524 tty->cr();
2525 comp->print_timers();
2526 }
2527 tty->cr();
2528 tty->print_cr(" Total compiled methods : %8d methods", total_compile_count);
2529 tty->print_cr(" Standard compilation : %8d methods", standard_compile_count);
2530 tty->print_cr(" On stack replacement : %8d methods", osr_compile_count);
2531 int tcb = osr_bytes_compiled + standard_bytes_compiled;
2532 tty->print_cr(" Total compiled bytecodes : %8d bytes", tcb);
2533 tty->print_cr(" Standard compilation : %8d bytes", standard_bytes_compiled);
2534 tty->print_cr(" On stack replacement : %8d bytes", osr_bytes_compiled);
2535 double tcs = total_compilation.seconds();
2536 int bps = tcs == 0.0 ? 0 : (int)(tcb / tcs);
2537 tty->print_cr(" Average compilation speed : %8d bytes/s", bps);
2538 tty->cr();
2539 tty->print_cr(" nmethod code size : %8d bytes", nmethods_code_size);
2540 tty->print_cr(" nmethod total size : %8d bytes", nmethods_size);
2541 }
2542
2543 // Debugging output for failure
2544 void CompileBroker::print_last_compile() {
2545 if (_last_compile_level != CompLevel_none &&
2546 compiler(_last_compile_level) != NULL &&
2547 _last_compile_type != no_compile) {
2548 if (_last_compile_type == osr_compile) {
2549 tty->print_cr("Last parse: [osr]%d+++(%d) %s",
2550 _osr_compilation_id, _last_compile_level, _last_method_compiled);
2551 } else {
2552 tty->print_cr("Last parse: %d+++(%d) %s",
2553 _compilation_id, _last_compile_level, _last_method_compiled);
2554 }
2555 }
2556 }