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src/share/vm/compiler/compileBroker.cpp@e863062e521d
src/share/vm/compiler/compileBroker.cpp
Mon, 04 Apr 2011 03:02:00 -0700
- author
- twisti
- date
- Mon, 04 Apr 2011 03:02:00 -0700
- changeset 2729
- e863062e521d
- parent 2687
- 3d58a4983660
- child 2764
- dbccacb79c63
- permissions
- -rw-r--r--
7032458: Zero and Shark fixes
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
1 /*
2 * Copyright (c) 1999, 2011, 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 */
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/codeCache.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/compileLog.hpp"
31 #include "compiler/compilerOracle.hpp"
32 #include "interpreter/linkResolver.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "oops/methodDataOop.hpp"
35 #include "oops/methodOop.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/nativeLookup.hpp"
38 #include "runtime/arguments.hpp"
39 #include "runtime/compilationPolicy.hpp"
40 #include "runtime/init.hpp"
41 #include "runtime/interfaceSupport.hpp"
42 #include "runtime/javaCalls.hpp"
43 #include "runtime/os.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "runtime/sweeper.hpp"
46 #include "utilities/dtrace.hpp"
47 #ifdef COMPILER1
48 #include "c1/c1_Compiler.hpp"
49 #endif
50 #ifdef COMPILER2
51 #include "opto/c2compiler.hpp"
52 #endif
53 #ifdef SHARK
54 #include "shark/sharkCompiler.hpp"
55 #endif
57 #ifdef DTRACE_ENABLED
59 // Only bother with this argument setup if dtrace is available
61 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
62 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
63 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
64 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
66 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
67 { \
68 char* comp_name = (char*)(compiler)->name(); \
69 Symbol* klass_name = (method)->klass_name(); \
70 Symbol* name = (method)->name(); \
71 Symbol* signature = (method)->signature(); \
72 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
73 comp_name, strlen(comp_name), \
74 klass_name->bytes(), klass_name->utf8_length(), \
75 name->bytes(), name->utf8_length(), \
76 signature->bytes(), signature->utf8_length()); \
77 }
79 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
80 { \
81 char* comp_name = (char*)(compiler)->name(); \
82 Symbol* klass_name = (method)->klass_name(); \
83 Symbol* name = (method)->name(); \
84 Symbol* signature = (method)->signature(); \
85 HS_DTRACE_PROBE9(hotspot, method__compile__end, \
86 comp_name, strlen(comp_name), \
87 klass_name->bytes(), klass_name->utf8_length(), \
88 name->bytes(), name->utf8_length(), \
89 signature->bytes(), signature->utf8_length(), (success)); \
90 }
92 #else // ndef DTRACE_ENABLED
94 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
95 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
97 #endif // ndef DTRACE_ENABLED
99 bool CompileBroker::_initialized = false;
100 volatile bool CompileBroker::_should_block = false;
101 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
103 // The installed compiler(s)
104 AbstractCompiler* CompileBroker::_compilers[2];
106 // These counters are used for assigning id's to each compilation
107 uint CompileBroker::_compilation_id = 0;
108 uint CompileBroker::_osr_compilation_id = 0;
110 // Debugging information
111 int CompileBroker::_last_compile_type = no_compile;
112 int CompileBroker::_last_compile_level = CompLevel_none;
113 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
115 // Performance counters
116 PerfCounter* CompileBroker::_perf_total_compilation = NULL;
117 PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
118 PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
120 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
121 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
122 PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
123 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
124 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
126 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
127 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
128 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
129 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
131 PerfStringVariable* CompileBroker::_perf_last_method = NULL;
132 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
133 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
134 PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
135 PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
136 PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
137 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
139 // Timers and counters for generating statistics
140 elapsedTimer CompileBroker::_t_total_compilation;
141 elapsedTimer CompileBroker::_t_osr_compilation;
142 elapsedTimer CompileBroker::_t_standard_compilation;
144 int CompileBroker::_total_bailout_count = 0;
145 int CompileBroker::_total_invalidated_count = 0;
146 int CompileBroker::_total_compile_count = 0;
147 int CompileBroker::_total_osr_compile_count = 0;
148 int CompileBroker::_total_standard_compile_count = 0;
150 int CompileBroker::_sum_osr_bytes_compiled = 0;
151 int CompileBroker::_sum_standard_bytes_compiled = 0;
152 int CompileBroker::_sum_nmethod_size = 0;
153 int CompileBroker::_sum_nmethod_code_size = 0;
155 CompileQueue* CompileBroker::_c2_method_queue = NULL;
156 CompileQueue* CompileBroker::_c1_method_queue = NULL;
157 CompileTask* CompileBroker::_task_free_list = NULL;
159 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
162 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
163 CompilerThread* thread = CompilerThread::current();
164 thread->set_task(task);
165 CompileLog* log = thread->log();
166 if (log != NULL) task->log_task_start(log);
167 }
169 CompileTaskWrapper::~CompileTaskWrapper() {
170 CompilerThread* thread = CompilerThread::current();
171 CompileTask* task = thread->task();
172 CompileLog* log = thread->log();
173 if (log != NULL) task->log_task_done(log);
174 thread->set_task(NULL);
175 task->set_code_handle(NULL);
176 DEBUG_ONLY(thread->set_env((ciEnv*)badAddress));
177 if (task->is_blocking()) {
178 MutexLocker notifier(task->lock(), thread);
179 task->mark_complete();
180 // Notify the waiting thread that the compilation has completed.
181 task->lock()->notify_all();
182 } else {
183 task->mark_complete();
185 // By convention, the compiling thread is responsible for
186 // recycling a non-blocking CompileTask.
187 CompileBroker::free_task(task);
188 }
189 }
192 // ------------------------------------------------------------------
193 // CompileTask::initialize
194 void CompileTask::initialize(int compile_id,
195 methodHandle method,
196 int osr_bci,
197 int comp_level,
198 methodHandle hot_method,
199 int hot_count,
200 const char* comment,
201 bool is_blocking) {
202 assert(!_lock->is_locked(), "bad locking");
204 _compile_id = compile_id;
205 _method = JNIHandles::make_global(method);
206 _osr_bci = osr_bci;
207 _is_blocking = is_blocking;
208 _comp_level = comp_level;
209 _num_inlined_bytecodes = 0;
211 _is_complete = false;
212 _is_success = false;
213 _code_handle = NULL;
215 _hot_method = NULL;
216 _hot_count = hot_count;
217 _time_queued = 0; // tidy
218 _comment = comment;
220 if (LogCompilation) {
221 _time_queued = os::elapsed_counter();
222 if (hot_method.not_null()) {
223 if (hot_method == method) {
224 _hot_method = _method;
225 } else {
226 _hot_method = JNIHandles::make_global(hot_method);
227 }
228 }
229 }
231 _next = NULL;
232 }
234 // ------------------------------------------------------------------
235 // CompileTask::code/set_code
236 nmethod* CompileTask::code() const {
237 if (_code_handle == NULL) return NULL;
238 return _code_handle->code();
239 }
240 void CompileTask::set_code(nmethod* nm) {
241 if (_code_handle == NULL && nm == NULL) return;
242 guarantee(_code_handle != NULL, "");
243 _code_handle->set_code(nm);
244 if (nm == NULL) _code_handle = NULL; // drop the handle also
245 }
247 // ------------------------------------------------------------------
248 // CompileTask::free
249 void CompileTask::free() {
250 set_code(NULL);
251 assert(!_lock->is_locked(), "Should not be locked when freed");
252 if (_hot_method != NULL && _hot_method != _method) {
253 JNIHandles::destroy_global(_hot_method);
254 }
255 JNIHandles::destroy_global(_method);
256 }
259 // ------------------------------------------------------------------
260 // CompileTask::print
261 void CompileTask::print() {
262 tty->print("<CompileTask compile_id=%d ", _compile_id);
263 tty->print("method=");
264 ((methodOop)JNIHandles::resolve(_method))->print_name(tty);
265 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
266 _osr_bci, bool_to_str(_is_blocking),
267 bool_to_str(_is_complete), bool_to_str(_is_success));
268 }
271 // ------------------------------------------------------------------
272 // CompileTask::print_line_on_error
273 //
274 // This function is called by fatal error handler when the thread
275 // causing troubles is a compiler thread.
276 //
277 // Do not grab any lock, do not allocate memory.
278 //
279 // Otherwise it's the same as CompileTask::print_line()
280 //
281 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
282 // print compiler name
283 st->print("%s:", CompileBroker::compiler(comp_level())->name());
284 print_compilation(st);
285 }
287 // ------------------------------------------------------------------
288 // CompileTask::print_line
289 void CompileTask::print_line() {
290 ttyLocker ttyl; // keep the following output all in one block
291 // print compiler name if requested
292 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
293 print_compilation();
294 }
297 // ------------------------------------------------------------------
298 // CompileTask::print_compilation_impl
299 void CompileTask::print_compilation_impl(outputStream* st, methodOop method, int compile_id, int comp_level, bool is_osr_method, int osr_bci, bool is_blocking, const char* msg) {
300 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
301 st->print("%4d ", compile_id); // print compilation number
303 // method attributes
304 const char compile_type = is_osr_method ? '%' : ' ';
305 const char sync_char = method->is_synchronized() ? 's' : ' ';
306 const char exception_char = method->has_exception_handler() ? '!' : ' ';
307 const char blocking_char = is_blocking ? 'b' : ' ';
308 const char native_char = method->is_native() ? 'n' : ' ';
310 // print method attributes
311 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
313 if (TieredCompilation) {
314 if (comp_level != -1) st->print("%d ", comp_level);
315 else st->print("- ");
316 }
317 st->print(" "); // more indent
319 method->print_short_name(st);
320 if (is_osr_method) {
321 st->print(" @ %d", osr_bci);
322 }
323 st->print(" (%d bytes)", method->code_size());
325 if (msg != NULL) {
326 st->print(" %s", msg);
327 }
328 st->cr();
329 }
331 // ------------------------------------------------------------------
332 // CompileTask::print_inlining
333 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
334 // 1234567
335 st->print(" "); // print timestamp
336 // 1234
337 st->print(" "); // print compilation number
339 // method attributes
340 const char sync_char = method->is_synchronized() ? 's' : ' ';
341 const char exception_char = method->has_exception_handlers() ? '!' : ' ';
342 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
344 // print method attributes
345 st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
347 if (TieredCompilation) {
348 st->print(" ");
349 }
350 st->print(" "); // more indent
351 st->print(" "); // initial inlining indent
353 for (int i = 0; i < inline_level; i++) st->print(" ");
355 st->print("@ %d ", bci); // print bci
356 method->print_short_name(st);
357 st->print(" (%d bytes)", method->code_size());
359 if (msg != NULL) {
360 st->print(" %s", msg);
361 }
362 st->cr();
363 }
365 // ------------------------------------------------------------------
366 // CompileTask::print_inline_indent
367 void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
368 // 1234567
369 st->print(" "); // print timestamp
370 // 1234
371 st->print(" "); // print compilation number
372 // %s!bn
373 st->print(" "); // print method attributes
374 if (TieredCompilation) {
375 st->print(" ");
376 }
377 st->print(" "); // more indent
378 st->print(" "); // initial inlining indent
379 for (int i = 0; i < inline_level; i++) st->print(" ");
380 }
382 // ------------------------------------------------------------------
383 // CompileTask::print_compilation
384 void CompileTask::print_compilation(outputStream* st) {
385 oop rem = JNIHandles::resolve(method_handle());
386 assert(rem != NULL && rem->is_method(), "must be");
387 methodOop method = (methodOop) rem;
388 bool is_osr_method = osr_bci() != InvocationEntryBci;
389 print_compilation_impl(st, method, compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking());
390 }
392 // ------------------------------------------------------------------
393 // CompileTask::log_task
394 void CompileTask::log_task(xmlStream* log) {
395 Thread* thread = Thread::current();
396 methodHandle method(thread,
397 (methodOop)JNIHandles::resolve(method_handle()));
398 ResourceMark rm(thread);
400 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
401 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id);
402 if (_osr_bci != CompileBroker::standard_entry_bci) {
403 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
404 } // else compile_kind='c2c'
405 if (!method.is_null()) log->method(method);
406 if (_osr_bci != CompileBroker::standard_entry_bci) {
407 log->print(" osr_bci='%d'", _osr_bci);
408 }
409 if (_comp_level != CompLevel_highest_tier) {
410 log->print(" level='%d'", _comp_level);
411 }
412 if (_is_blocking) {
413 log->print(" blocking='1'");
414 }
415 log->stamp();
416 }
419 // ------------------------------------------------------------------
420 // CompileTask::log_task_queued
421 void CompileTask::log_task_queued() {
422 Thread* thread = Thread::current();
423 ttyLocker ttyl;
424 ResourceMark rm(thread);
426 xtty->begin_elem("task_queued");
427 log_task(xtty);
428 if (_comment != NULL) {
429 xtty->print(" comment='%s'", _comment);
430 }
431 if (_hot_method != NULL) {
432 methodHandle hot(thread,
433 (methodOop)JNIHandles::resolve(_hot_method));
434 methodHandle method(thread,
435 (methodOop)JNIHandles::resolve(_method));
436 if (hot() != method()) {
437 xtty->method(hot);
438 }
439 }
440 if (_hot_count != 0) {
441 xtty->print(" hot_count='%d'", _hot_count);
442 }
443 xtty->end_elem();
444 }
447 // ------------------------------------------------------------------
448 // CompileTask::log_task_start
449 void CompileTask::log_task_start(CompileLog* log) {
450 log->begin_head("task");
451 log_task(log);
452 log->end_head();
453 }
456 // ------------------------------------------------------------------
457 // CompileTask::log_task_done
458 void CompileTask::log_task_done(CompileLog* log) {
459 Thread* thread = Thread::current();
460 methodHandle method(thread,
461 (methodOop)JNIHandles::resolve(method_handle()));
462 ResourceMark rm(thread);
464 // <task_done ... stamp='1.234'> </task>
465 nmethod* nm = code();
466 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
467 _is_success, nm == NULL ? 0 : nm->content_size(),
468 method->invocation_count());
469 int bec = method->backedge_count();
470 if (bec != 0) log->print(" backedge_count='%d'", bec);
471 // Note: "_is_complete" is about to be set, but is not.
472 if (_num_inlined_bytecodes != 0) {
473 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
474 }
475 log->stamp();
476 log->end_elem();
477 log->tail("task");
478 log->clear_identities(); // next task will have different CI
479 if (log->unflushed_count() > 2000) {
480 log->flush();
481 }
482 log->mark_file_end();
483 }
487 // ------------------------------------------------------------------
488 // CompileQueue::add
489 //
490 // Add a CompileTask to a CompileQueue
491 void CompileQueue::add(CompileTask* task) {
492 assert(lock()->owned_by_self(), "must own lock");
494 task->set_next(NULL);
495 task->set_prev(NULL);
497 if (_last == NULL) {
498 // The compile queue is empty.
499 assert(_first == NULL, "queue is empty");
500 _first = task;
501 _last = task;
502 } else {
503 // Append the task to the queue.
504 assert(_last->next() == NULL, "not last");
505 _last->set_next(task);
506 task->set_prev(_last);
507 _last = task;
508 }
509 ++_size;
511 // Mark the method as being in the compile queue.
512 ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation();
514 if (CIPrintCompileQueue) {
515 print();
516 }
518 if (LogCompilation && xtty != NULL) {
519 task->log_task_queued();
520 }
522 // Notify CompilerThreads that a task is available.
523 lock()->notify_all();
524 }
526 // ------------------------------------------------------------------
527 // CompileQueue::get
528 //
529 // Get the next CompileTask from a CompileQueue
530 CompileTask* CompileQueue::get() {
531 NMethodSweeper::possibly_sweep();
533 MutexLocker locker(lock());
534 // Wait for an available CompileTask.
535 while (_first == NULL) {
536 // There is no work to be done right now. Wait.
537 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) {
538 // During the emergency sweeping periods, wake up and sweep occasionally
539 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000);
540 if (timedout) {
541 MutexUnlocker ul(lock());
542 // When otherwise not busy, run nmethod sweeping
543 NMethodSweeper::possibly_sweep();
544 }
545 } else {
546 // During normal operation no need to wake up on timer
547 lock()->wait();
548 }
549 }
550 CompileTask* task = CompilationPolicy::policy()->select_task(this);
551 remove(task);
552 return task;
553 }
555 void CompileQueue::remove(CompileTask* task)
556 {
557 assert(lock()->owned_by_self(), "must own lock");
558 if (task->prev() != NULL) {
559 task->prev()->set_next(task->next());
560 } else {
561 // max is the first element
562 assert(task == _first, "Sanity");
563 _first = task->next();
564 }
566 if (task->next() != NULL) {
567 task->next()->set_prev(task->prev());
568 } else {
569 // max is the last element
570 assert(task == _last, "Sanity");
571 _last = task->prev();
572 }
573 --_size;
574 }
576 // ------------------------------------------------------------------
577 // CompileQueue::print
578 void CompileQueue::print() {
579 tty->print_cr("Contents of %s", name());
580 tty->print_cr("----------------------");
581 CompileTask* task = _first;
582 while (task != NULL) {
583 task->print_line();
584 task = task->next();
585 }
586 tty->print_cr("----------------------");
587 }
589 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
591 _current_method[0] = '\0';
592 _compile_type = CompileBroker::no_compile;
594 if (UsePerfData) {
595 ResourceMark rm;
597 // create the thread instance name space string - don't create an
598 // instance subspace if instance is -1 - keeps the adapterThread
599 // counters from having a ".0" namespace.
600 const char* thread_i = (instance == -1) ? thread_name :
601 PerfDataManager::name_space(thread_name, instance);
604 char* name = PerfDataManager::counter_name(thread_i, "method");
605 _perf_current_method =
606 PerfDataManager::create_string_variable(SUN_CI, name,
607 cmname_buffer_length,
608 _current_method, CHECK);
610 name = PerfDataManager::counter_name(thread_i, "type");
611 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
612 PerfData::U_None,
613 (jlong)_compile_type,
614 CHECK);
616 name = PerfDataManager::counter_name(thread_i, "time");
617 _perf_time = PerfDataManager::create_counter(SUN_CI, name,
618 PerfData::U_Ticks, CHECK);
620 name = PerfDataManager::counter_name(thread_i, "compiles");
621 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
622 PerfData::U_Events, CHECK);
623 }
624 }
626 // ------------------------------------------------------------------
627 // CompileBroker::compilation_init
628 //
629 // Initialize the Compilation object
630 void CompileBroker::compilation_init() {
631 _last_method_compiled[0] = '\0';
633 #ifndef SHARK
634 // Set the interface to the current compiler(s).
635 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
636 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
637 #ifdef COMPILER1
638 if (c1_count > 0) {
639 _compilers[0] = new Compiler();
640 }
641 #endif // COMPILER1
643 #ifdef COMPILER2
644 if (c2_count > 0) {
645 _compilers[1] = new C2Compiler();
646 }
647 #endif // COMPILER2
649 #else // SHARK
650 int c1_count = 0;
651 int c2_count = 1;
653 _compilers[1] = new SharkCompiler();
654 #endif // SHARK
656 // Initialize the CompileTask free list
657 _task_free_list = NULL;
659 // Start the CompilerThreads
660 init_compiler_threads(c1_count, c2_count);
661 // totalTime performance counter is always created as it is required
662 // by the implementation of java.lang.management.CompilationMBean.
663 {
664 EXCEPTION_MARK;
665 _perf_total_compilation =
666 PerfDataManager::create_counter(JAVA_CI, "totalTime",
667 PerfData::U_Ticks, CHECK);
668 }
671 if (UsePerfData) {
673 EXCEPTION_MARK;
675 // create the jvmstat performance counters
676 _perf_osr_compilation =
677 PerfDataManager::create_counter(SUN_CI, "osrTime",
678 PerfData::U_Ticks, CHECK);
680 _perf_standard_compilation =
681 PerfDataManager::create_counter(SUN_CI, "standardTime",
682 PerfData::U_Ticks, CHECK);
684 _perf_total_bailout_count =
685 PerfDataManager::create_counter(SUN_CI, "totalBailouts",
686 PerfData::U_Events, CHECK);
688 _perf_total_invalidated_count =
689 PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
690 PerfData::U_Events, CHECK);
692 _perf_total_compile_count =
693 PerfDataManager::create_counter(SUN_CI, "totalCompiles",
694 PerfData::U_Events, CHECK);
695 _perf_total_osr_compile_count =
696 PerfDataManager::create_counter(SUN_CI, "osrCompiles",
697 PerfData::U_Events, CHECK);
699 _perf_total_standard_compile_count =
700 PerfDataManager::create_counter(SUN_CI, "standardCompiles",
701 PerfData::U_Events, CHECK);
703 _perf_sum_osr_bytes_compiled =
704 PerfDataManager::create_counter(SUN_CI, "osrBytes",
705 PerfData::U_Bytes, CHECK);
707 _perf_sum_standard_bytes_compiled =
708 PerfDataManager::create_counter(SUN_CI, "standardBytes",
709 PerfData::U_Bytes, CHECK);
711 _perf_sum_nmethod_size =
712 PerfDataManager::create_counter(SUN_CI, "nmethodSize",
713 PerfData::U_Bytes, CHECK);
715 _perf_sum_nmethod_code_size =
716 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
717 PerfData::U_Bytes, CHECK);
719 _perf_last_method =
720 PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
721 CompilerCounters::cmname_buffer_length,
722 "", CHECK);
724 _perf_last_failed_method =
725 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
726 CompilerCounters::cmname_buffer_length,
727 "", CHECK);
729 _perf_last_invalidated_method =
730 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
731 CompilerCounters::cmname_buffer_length,
732 "", CHECK);
734 _perf_last_compile_type =
735 PerfDataManager::create_variable(SUN_CI, "lastType",
736 PerfData::U_None,
737 (jlong)CompileBroker::no_compile,
738 CHECK);
740 _perf_last_compile_size =
741 PerfDataManager::create_variable(SUN_CI, "lastSize",
742 PerfData::U_Bytes,
743 (jlong)CompileBroker::no_compile,
744 CHECK);
747 _perf_last_failed_type =
748 PerfDataManager::create_variable(SUN_CI, "lastFailedType",
749 PerfData::U_None,
750 (jlong)CompileBroker::no_compile,
751 CHECK);
753 _perf_last_invalidated_type =
754 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
755 PerfData::U_None,
756 (jlong)CompileBroker::no_compile,
757 CHECK);
758 }
760 _initialized = true;
761 }
765 // ------------------------------------------------------------------
766 // CompileBroker::make_compiler_thread
767 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
768 CompilerThread* compiler_thread = NULL;
770 klassOop k =
771 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(),
772 true, CHECK_0);
773 instanceKlassHandle klass (THREAD, k);
774 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
775 Handle string = java_lang_String::create_from_str(name, CHECK_0);
777 // Initialize thread_oop to put it into the system threadGroup
778 Handle thread_group (THREAD, Universe::system_thread_group());
779 JavaValue result(T_VOID);
780 JavaCalls::call_special(&result, thread_oop,
781 klass,
782 vmSymbols::object_initializer_name(),
783 vmSymbols::threadgroup_string_void_signature(),
784 thread_group,
785 string,
786 CHECK_0);
788 {
789 MutexLocker mu(Threads_lock, THREAD);
790 compiler_thread = new CompilerThread(queue, counters);
791 // At this point the new CompilerThread data-races with this startup
792 // thread (which I believe is the primoridal thread and NOT the VM
793 // thread). This means Java bytecodes being executed at startup can
794 // queue compile jobs which will run at whatever default priority the
795 // newly created CompilerThread runs at.
798 // At this point it may be possible that no osthread was created for the
799 // JavaThread due to lack of memory. We would have to throw an exception
800 // in that case. However, since this must work and we do not allow
801 // exceptions anyway, check and abort if this fails.
803 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
804 vm_exit_during_initialization("java.lang.OutOfMemoryError",
805 "unable to create new native thread");
806 }
808 java_lang_Thread::set_thread(thread_oop(), compiler_thread);
810 // Note that this only sets the JavaThread _priority field, which by
811 // definition is limited to Java priorities and not OS priorities.
812 // The os-priority is set in the CompilerThread startup code itself
813 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
814 // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler
815 // threads never have their OS priority set. The assumption here is to
816 // enable the Performance group to do flag tuning, figure out a suitable
817 // CompilerThreadPriority, and then remove this 'if' statement (and
818 // comment) and unconditionally set the priority.
820 // Compiler Threads should be at the highest Priority
821 if ( CompilerThreadPriority != -1 )
822 os::set_native_priority( compiler_thread, CompilerThreadPriority );
823 else
824 os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]);
826 // Note that I cannot call os::set_priority because it expects Java
827 // priorities and I am *explicitly* using OS priorities so that it's
828 // possible to set the compiler thread priority higher than any Java
829 // thread.
831 java_lang_Thread::set_daemon(thread_oop());
833 compiler_thread->set_threadObj(thread_oop());
834 Threads::add(compiler_thread);
835 Thread::start(compiler_thread);
836 }
837 // Let go of Threads_lock before yielding
838 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
840 return compiler_thread;
841 }
844 // ------------------------------------------------------------------
845 // CompileBroker::init_compiler_threads
846 //
847 // Initialize the compilation queue
848 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) {
849 EXCEPTION_MARK;
850 #if !defined(ZERO) && !defined(SHARK)
851 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?");
852 #endif // !ZERO && !SHARK
853 if (c2_compiler_count > 0) {
854 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock);
855 }
856 if (c1_compiler_count > 0) {
857 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock);
858 }
860 int compiler_count = c1_compiler_count + c2_compiler_count;
862 _method_threads =
863 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true);
865 char name_buffer[256];
866 for (int i = 0; i < c2_compiler_count; i++) {
867 // Create a name for our thread.
868 sprintf(name_buffer, "C2 CompilerThread%d", i);
869 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
870 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK);
871 _method_threads->append(new_thread);
872 }
874 for (int i = c2_compiler_count; i < compiler_count; i++) {
875 // Create a name for our thread.
876 sprintf(name_buffer, "C1 CompilerThread%d", i);
877 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
878 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK);
879 _method_threads->append(new_thread);
880 }
882 if (UsePerfData) {
883 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
884 compiler_count, CHECK);
885 }
886 }
888 // ------------------------------------------------------------------
889 // CompileBroker::is_idle
890 bool CompileBroker::is_idle() {
891 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) {
892 return false;
893 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) {
894 return false;
895 } else {
896 int num_threads = _method_threads->length();
897 for (int i=0; i<num_threads; i++) {
898 if (_method_threads->at(i)->task() != NULL) {
899 return false;
900 }
901 }
903 // No pending or active compilations.
904 return true;
905 }
906 }
909 // ------------------------------------------------------------------
910 // CompileBroker::compile_method
911 //
912 // Request compilation of a method.
913 void CompileBroker::compile_method_base(methodHandle method,
914 int osr_bci,
915 int comp_level,
916 methodHandle hot_method,
917 int hot_count,
918 const char* comment,
919 TRAPS) {
920 // do nothing if compiler thread(s) is not available
921 if (!_initialized ) {
922 return;
923 }
925 guarantee(!method->is_abstract(), "cannot compile abstract methods");
926 assert(method->method_holder()->klass_part()->oop_is_instance(),
927 "sanity check");
928 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(),
929 "method holder must be initialized");
931 if (CIPrintRequests) {
932 tty->print("request: ");
933 method->print_short_name(tty);
934 if (osr_bci != InvocationEntryBci) {
935 tty->print(" osr_bci: %d", osr_bci);
936 }
937 tty->print(" comment: %s count: %d", comment, hot_count);
938 if (!hot_method.is_null()) {
939 tty->print(" hot: ");
940 if (hot_method() != method()) {
941 hot_method->print_short_name(tty);
942 } else {
943 tty->print("yes");
944 }
945 }
946 tty->cr();
947 }
949 // A request has been made for compilation. Before we do any
950 // real work, check to see if the method has been compiled
951 // in the meantime with a definitive result.
952 if (compilation_is_complete(method, osr_bci, comp_level)) {
953 return;
954 }
956 #ifndef PRODUCT
957 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
958 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
959 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
960 return;
961 }
962 }
963 #endif
965 // If this method is already in the compile queue, then
966 // we do not block the current thread.
967 if (compilation_is_in_queue(method, osr_bci)) {
968 // We may want to decay our counter a bit here to prevent
969 // multiple denied requests for compilation. This is an
970 // open compilation policy issue. Note: The other possibility,
971 // in the case that this is a blocking compile request, is to have
972 // all subsequent blocking requesters wait for completion of
973 // ongoing compiles. Note that in this case we'll need a protocol
974 // for freeing the associated compile tasks. [Or we could have
975 // a single static monitor on which all these waiters sleep.]
976 return;
977 }
979 // Outputs from the following MutexLocker block:
980 CompileTask* task = NULL;
981 bool blocking = false;
982 CompileQueue* queue = compile_queue(comp_level);
984 // Acquire our lock.
985 {
986 MutexLocker locker(queue->lock(), THREAD);
988 // Make sure the method has not slipped into the queues since
989 // last we checked; note that those checks were "fast bail-outs".
990 // Here we need to be more careful, see 14012000 below.
991 if (compilation_is_in_queue(method, osr_bci)) {
992 return;
993 }
995 // We need to check again to see if the compilation has
996 // completed. A previous compilation may have registered
997 // some result.
998 if (compilation_is_complete(method, osr_bci, comp_level)) {
999 return;
1000 }
1002 // We now know that this compilation is not pending, complete,
1003 // or prohibited. Assign a compile_id to this compilation
1004 // and check to see if it is in our [Start..Stop) range.
1005 uint compile_id = assign_compile_id(method, osr_bci);
1006 if (compile_id == 0) {
1007 // The compilation falls outside the allowed range.
1008 return;
1009 }
1011 // Should this thread wait for completion of the compile?
1012 blocking = is_compile_blocking(method, osr_bci);
1014 // We will enter the compilation in the queue.
1015 // 14012000: Note that this sets the queued_for_compile bits in
1016 // the target method. We can now reason that a method cannot be
1017 // queued for compilation more than once, as follows:
1018 // Before a thread queues a task for compilation, it first acquires
1019 // the compile queue lock, then checks if the method's queued bits
1020 // are set or it has already been compiled. Thus there can not be two
1021 // instances of a compilation task for the same method on the
1022 // compilation queue. Consider now the case where the compilation
1023 // thread has already removed a task for that method from the queue
1024 // and is in the midst of compiling it. In this case, the
1025 // queued_for_compile bits must be set in the method (and these
1026 // will be visible to the current thread, since the bits were set
1027 // under protection of the compile queue lock, which we hold now.
1028 // When the compilation completes, the compiler thread first sets
1029 // the compilation result and then clears the queued_for_compile
1030 // bits. Neither of these actions are protected by a barrier (or done
1031 // under the protection of a lock), so the only guarantee we have
1032 // (on machines with TSO (Total Store Order)) is that these values
1033 // will update in that order. As a result, the only combinations of
1034 // these bits that the current thread will see are, in temporal order:
1035 // <RESULT, QUEUE> :
1036 // <0, 1> : in compile queue, but not yet compiled
1037 // <1, 1> : compiled but queue bit not cleared
1038 // <1, 0> : compiled and queue bit cleared
1039 // Because we first check the queue bits then check the result bits,
1040 // we are assured that we cannot introduce a duplicate task.
1041 // Note that if we did the tests in the reverse order (i.e. check
1042 // result then check queued bit), we could get the result bit before
1043 // the compilation completed, and the queue bit after the compilation
1044 // completed, and end up introducing a "duplicate" (redundant) task.
1045 // In that case, the compiler thread should first check if a method
1046 // has already been compiled before trying to compile it.
1047 // NOTE: in the event that there are multiple compiler threads and
1048 // there is de-optimization/recompilation, things will get hairy,
1049 // and in that case it's best to protect both the testing (here) of
1050 // these bits, and their updating (here and elsewhere) under a
1051 // common lock.
1052 task = create_compile_task(queue,
1053 compile_id, method,
1054 osr_bci, comp_level,
1055 hot_method, hot_count, comment,
1056 blocking);
1057 }
1059 if (blocking) {
1060 wait_for_completion(task);
1061 }
1062 }
1065 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
1066 int comp_level,
1067 methodHandle hot_method, int hot_count,
1068 const char* comment, TRAPS) {
1069 // make sure arguments make sense
1070 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
1071 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
1072 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
1073 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized");
1075 if (!TieredCompilation) {
1076 comp_level = CompLevel_highest_tier;
1077 }
1079 // return quickly if possible
1081 // lock, make sure that the compilation
1082 // isn't prohibited in a straightforward way.
1084 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) {
1085 return NULL;
1086 }
1088 if (osr_bci == InvocationEntryBci) {
1089 // standard compilation
1090 nmethod* method_code = method->code();
1091 if (method_code != NULL) {
1092 if (compilation_is_complete(method, osr_bci, comp_level)) {
1093 return method_code;
1094 }
1095 }
1096 if (method->is_not_compilable(comp_level)) return NULL;
1098 if (UseCodeCacheFlushing) {
1099 nmethod* saved = CodeCache::find_and_remove_saved_code(method());
1100 if (saved != NULL) {
1101 method->set_code(method, saved);
1102 return saved;
1103 }
1104 }
1106 } else {
1107 // osr compilation
1108 #ifndef TIERED
1109 // seems like an assert of dubious value
1110 assert(comp_level == CompLevel_highest_tier,
1111 "all OSR compiles are assumed to be at a single compilation lavel");
1112 #endif // TIERED
1113 // We accept a higher level osr method
1114 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1115 if (nm != NULL) return nm;
1116 if (method->is_not_osr_compilable()) return NULL;
1117 }
1119 assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
1120 // some prerequisites that are compiler specific
1121 if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) {
1122 method->constants()->resolve_string_constants(CHECK_0);
1123 // Resolve all classes seen in the signature of the method
1124 // we are compiling.
1125 methodOopDesc::load_signature_classes(method, CHECK_0);
1126 }
1128 // If the method is native, do the lookup in the thread requesting
1129 // the compilation. Native lookups can load code, which is not
1130 // permitted during compilation.
1131 //
1132 // Note: A native method implies non-osr compilation which is
1133 // checked with an assertion at the entry of this method.
1134 if (method->is_native()) {
1135 bool in_base_library;
1136 address adr = NativeLookup::lookup(method, in_base_library, THREAD);
1137 if (HAS_PENDING_EXCEPTION) {
1138 // In case of an exception looking up the method, we just forget
1139 // about it. The interpreter will kick-in and throw the exception.
1140 method->set_not_compilable(); // implies is_not_osr_compilable()
1141 CLEAR_PENDING_EXCEPTION;
1142 return NULL;
1143 }
1144 assert(method->has_native_function(), "must have native code by now");
1145 }
1147 // RedefineClasses() has replaced this method; just return
1148 if (method->is_old()) {
1149 return NULL;
1150 }
1152 // JVMTI -- post_compile_event requires jmethod_id() that may require
1153 // a lock the compiling thread can not acquire. Prefetch it here.
1154 if (JvmtiExport::should_post_compiled_method_load()) {
1155 method->jmethod_id();
1156 }
1158 // If the compiler is shut off due to code cache flushing or otherwise,
1159 // fail out now so blocking compiles dont hang the java thread
1160 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) {
1161 CompilationPolicy::policy()->delay_compilation(method());
1162 return NULL;
1163 }
1165 // do the compilation
1166 if (method->is_native()) {
1167 if (!PreferInterpreterNativeStubs) {
1168 // Acquire our lock.
1169 int compile_id;
1170 {
1171 MutexLocker locker(MethodCompileQueue_lock, THREAD);
1172 compile_id = assign_compile_id(method, standard_entry_bci);
1173 }
1174 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id);
1175 } else {
1176 return NULL;
1177 }
1178 } else {
1179 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
1180 }
1182 // return requested nmethod
1183 // We accept a higher level osr method
1184 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1185 }
1188 // ------------------------------------------------------------------
1189 // CompileBroker::compilation_is_complete
1190 //
1191 // See if compilation of this method is already complete.
1192 bool CompileBroker::compilation_is_complete(methodHandle method,
1193 int osr_bci,
1194 int comp_level) {
1195 bool is_osr = (osr_bci != standard_entry_bci);
1196 if (is_osr) {
1197 if (method->is_not_osr_compilable()) {
1198 return true;
1199 } else {
1200 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
1201 return (result != NULL);
1202 }
1203 } else {
1204 if (method->is_not_compilable(comp_level)) {
1205 return true;
1206 } else {
1207 nmethod* result = method->code();
1208 if (result == NULL) return false;
1209 return comp_level == result->comp_level();
1210 }
1211 }
1212 }
1215 // ------------------------------------------------------------------
1216 // CompileBroker::compilation_is_in_queue
1217 //
1218 // See if this compilation is already requested.
1219 //
1220 // Implementation note: there is only a single "is in queue" bit
1221 // for each method. This means that the check below is overly
1222 // conservative in the sense that an osr compilation in the queue
1223 // will block a normal compilation from entering the queue (and vice
1224 // versa). This can be remedied by a full queue search to disambiguate
1225 // cases. If it is deemed profitible, this may be done.
1226 bool CompileBroker::compilation_is_in_queue(methodHandle method,
1227 int osr_bci) {
1228 return method->queued_for_compilation();
1229 }
1231 // ------------------------------------------------------------------
1232 // CompileBroker::compilation_is_prohibited
1233 //
1234 // See if this compilation is not allowed.
1235 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
1236 bool is_native = method->is_native();
1237 // Some compilers may not support the compilation of natives.
1238 if (is_native &&
1239 (!CICompileNatives || !compiler(comp_level)->supports_native())) {
1240 method->set_not_compilable_quietly(comp_level);
1241 return true;
1242 }
1244 bool is_osr = (osr_bci != standard_entry_bci);
1245 // Some compilers may not support on stack replacement.
1246 if (is_osr &&
1247 (!CICompileOSR || !compiler(comp_level)->supports_osr())) {
1248 method->set_not_osr_compilable();
1249 return true;
1250 }
1252 // The method may be explicitly excluded by the user.
1253 bool quietly;
1254 if (CompilerOracle::should_exclude(method, quietly)) {
1255 if (!quietly) {
1256 // This does not happen quietly...
1257 ResourceMark rm;
1258 tty->print("### Excluding %s:%s",
1259 method->is_native() ? "generation of native wrapper" : "compile",
1260 (method->is_static() ? " static" : ""));
1261 method->print_short_name(tty);
1262 tty->cr();
1263 }
1264 method->set_not_compilable_quietly();
1265 }
1267 return false;
1268 }
1271 // ------------------------------------------------------------------
1272 // CompileBroker::assign_compile_id
1273 //
1274 // Assign a serialized id number to this compilation request. If the
1275 // number falls out of the allowed range, return a 0. OSR
1276 // compilations may be numbered separately from regular compilations
1277 // if certain debugging flags are used.
1278 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
1279 assert(MethodCompileQueue_lock->owner() == Thread::current(),
1280 "must hold the compilation queue lock");
1281 bool is_osr = (osr_bci != standard_entry_bci);
1282 uint id;
1283 if (CICountOSR && is_osr) {
1284 id = ++_osr_compilation_id;
1285 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
1286 return id;
1287 }
1288 } else {
1289 id = ++_compilation_id;
1290 if ((uint)CIStart <= id && id < (uint)CIStop) {
1291 return id;
1292 }
1293 }
1295 // Method was not in the appropriate compilation range.
1296 method->set_not_compilable_quietly();
1297 return 0;
1298 }
1301 // ------------------------------------------------------------------
1302 // CompileBroker::is_compile_blocking
1303 //
1304 // Should the current thread be blocked until this compilation request
1305 // has been fulfilled?
1306 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
1307 if (!BackgroundCompilation) {
1308 Symbol* class_name = method->method_holder()->klass_part()->name();
1309 if (class_name->starts_with("java/lang/ref/Reference", 23)) {
1310 // The reference handler thread can dead lock with the GC if compilation is blocking,
1311 // so we avoid blocking compiles for anything in the java.lang.ref.Reference class,
1312 // including inner classes such as ReferenceHandler.
1313 return false;
1314 }
1315 return true;
1316 }
1317 return false;
1318 }
1321 // ------------------------------------------------------------------
1322 // CompileBroker::preload_classes
1323 void CompileBroker::preload_classes(methodHandle method, TRAPS) {
1324 // Move this code over from c1_Compiler.cpp
1325 ShouldNotReachHere();
1326 }
1329 // ------------------------------------------------------------------
1330 // CompileBroker::create_compile_task
1331 //
1332 // Create a CompileTask object representing the current request for
1333 // compilation. Add this task to the queue.
1334 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1335 int compile_id,
1336 methodHandle method,
1337 int osr_bci,
1338 int comp_level,
1339 methodHandle hot_method,
1340 int hot_count,
1341 const char* comment,
1342 bool blocking) {
1343 CompileTask* new_task = allocate_task();
1344 new_task->initialize(compile_id, method, osr_bci, comp_level,
1345 hot_method, hot_count, comment,
1346 blocking);
1347 queue->add(new_task);
1348 return new_task;
1349 }
1352 // ------------------------------------------------------------------
1353 // CompileBroker::allocate_task
1354 //
1355 // Allocate a CompileTask, from the free list if possible.
1356 CompileTask* CompileBroker::allocate_task() {
1357 MutexLocker locker(CompileTaskAlloc_lock);
1358 CompileTask* task = NULL;
1359 if (_task_free_list != NULL) {
1360 task = _task_free_list;
1361 _task_free_list = task->next();
1362 task->set_next(NULL);
1363 } else {
1364 task = new CompileTask();
1365 task->set_next(NULL);
1366 }
1367 return task;
1368 }
1371 // ------------------------------------------------------------------
1372 // CompileBroker::free_task
1373 //
1374 // Add a task to the free list.
1375 void CompileBroker::free_task(CompileTask* task) {
1376 MutexLocker locker(CompileTaskAlloc_lock);
1377 task->free();
1378 task->set_next(_task_free_list);
1379 _task_free_list = task;
1380 }
1383 // ------------------------------------------------------------------
1384 // CompileBroker::wait_for_completion
1385 //
1386 // Wait for the given method CompileTask to complete.
1387 void CompileBroker::wait_for_completion(CompileTask* task) {
1388 if (CIPrintCompileQueue) {
1389 tty->print_cr("BLOCKING FOR COMPILE");
1390 }
1392 assert(task->is_blocking(), "can only wait on blocking task");
1394 JavaThread *thread = JavaThread::current();
1395 thread->set_blocked_on_compilation(true);
1397 methodHandle method(thread,
1398 (methodOop)JNIHandles::resolve(task->method_handle()));
1399 {
1400 MutexLocker waiter(task->lock(), thread);
1402 while (!task->is_complete())
1403 task->lock()->wait();
1404 }
1405 // It is harmless to check this status without the lock, because
1406 // completion is a stable property (until the task object is recycled).
1407 assert(task->is_complete(), "Compilation should have completed");
1408 assert(task->code_handle() == NULL, "must be reset");
1410 thread->set_blocked_on_compilation(false);
1412 // By convention, the waiter is responsible for recycling a
1413 // blocking CompileTask. Since there is only one waiter ever
1414 // waiting on a CompileTask, we know that no one else will
1415 // be using this CompileTask; we can free it.
1416 free_task(task);
1417 }
1419 // ------------------------------------------------------------------
1420 // CompileBroker::compiler_thread_loop
1421 //
1422 // The main loop run by a CompilerThread.
1423 void CompileBroker::compiler_thread_loop() {
1424 CompilerThread* thread = CompilerThread::current();
1425 CompileQueue* queue = thread->queue();
1427 // For the thread that initializes the ciObjectFactory
1428 // this resource mark holds all the shared objects
1429 ResourceMark rm;
1431 // First thread to get here will initialize the compiler interface
1433 if (!ciObjectFactory::is_initialized()) {
1434 ASSERT_IN_VM;
1435 MutexLocker only_one (CompileThread_lock, thread);
1436 if (!ciObjectFactory::is_initialized()) {
1437 ciObjectFactory::initialize();
1438 }
1439 }
1441 // Open a log.
1442 if (LogCompilation) {
1443 init_compiler_thread_log();
1444 }
1445 CompileLog* log = thread->log();
1446 if (log != NULL) {
1447 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
1448 os::current_thread_id(),
1449 os::current_process_id());
1450 log->stamp();
1451 log->end_elem();
1452 }
1454 while (true) {
1455 {
1456 // We need this HandleMark to avoid leaking VM handles.
1457 HandleMark hm(thread);
1459 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) {
1460 // the code cache is really full
1461 handle_full_code_cache();
1462 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) {
1463 // Attempt to start cleaning the code cache while there is still a little headroom
1464 NMethodSweeper::handle_full_code_cache(false);
1465 }
1467 CompileTask* task = queue->get();
1469 // Give compiler threads an extra quanta. They tend to be bursty and
1470 // this helps the compiler to finish up the job.
1471 if( CompilerThreadHintNoPreempt )
1472 os::hint_no_preempt();
1474 // trace per thread time and compile statistics
1475 CompilerCounters* counters = ((CompilerThread*)thread)->counters();
1476 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
1478 // Assign the task to the current thread. Mark this compilation
1479 // thread as active for the profiler.
1480 CompileTaskWrapper ctw(task);
1481 nmethodLocker result_handle; // (handle for the nmethod produced by this task)
1482 task->set_code_handle(&result_handle);
1483 methodHandle method(thread,
1484 (methodOop)JNIHandles::resolve(task->method_handle()));
1486 // Never compile a method if breakpoints are present in it
1487 if (method()->number_of_breakpoints() == 0) {
1488 // Compile the method.
1489 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
1490 #ifdef COMPILER1
1491 // Allow repeating compilations for the purpose of benchmarking
1492 // compile speed. This is not useful for customers.
1493 if (CompilationRepeat != 0) {
1494 int compile_count = CompilationRepeat;
1495 while (compile_count > 0) {
1496 invoke_compiler_on_method(task);
1497 nmethod* nm = method->code();
1498 if (nm != NULL) {
1499 nm->make_zombie();
1500 method->clear_code();
1501 }
1502 compile_count--;
1503 }
1504 }
1505 #endif /* COMPILER1 */
1506 invoke_compiler_on_method(task);
1507 } else {
1508 // After compilation is disabled, remove remaining methods from queue
1509 method->clear_queued_for_compilation();
1510 }
1511 }
1512 }
1513 }
1514 }
1517 // ------------------------------------------------------------------
1518 // CompileBroker::init_compiler_thread_log
1519 //
1520 // Set up state required by +LogCompilation.
1521 void CompileBroker::init_compiler_thread_log() {
1522 CompilerThread* thread = CompilerThread::current();
1523 char fileBuf[4*K];
1524 FILE* fp = NULL;
1525 char* file = NULL;
1526 intx thread_id = os::current_thread_id();
1527 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
1528 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
1529 if (dir == NULL) {
1530 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log",
1531 thread_id, os::current_process_id());
1532 } else {
1533 jio_snprintf(fileBuf, sizeof(fileBuf),
1534 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
1535 os::file_separator(), thread_id, os::current_process_id());
1536 }
1537 fp = fopen(fileBuf, "at");
1538 if (fp != NULL) {
1539 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1);
1540 strcpy(file, fileBuf);
1541 break;
1542 }
1543 }
1544 if (fp == NULL) {
1545 warning("Cannot open log file: %s", fileBuf);
1546 } else {
1547 if (LogCompilation && Verbose)
1548 tty->print_cr("Opening compilation log %s", file);
1549 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id);
1550 thread->init_log(log);
1552 if (xtty != NULL) {
1553 ttyLocker ttyl;
1555 // Record any per thread log files
1556 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
1557 }
1558 }
1559 }
1561 // ------------------------------------------------------------------
1562 // CompileBroker::set_should_block
1563 //
1564 // Set _should_block.
1565 // Call this from the VM, with Threads_lock held and a safepoint requested.
1566 void CompileBroker::set_should_block() {
1567 assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
1568 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
1569 #ifndef PRODUCT
1570 if (PrintCompilation && (Verbose || WizardMode))
1571 tty->print_cr("notifying compiler thread pool to block");
1572 #endif
1573 _should_block = true;
1574 }
1576 // ------------------------------------------------------------------
1577 // CompileBroker::maybe_block
1578 //
1579 // Call this from the compiler at convenient points, to poll for _should_block.
1580 void CompileBroker::maybe_block() {
1581 if (_should_block) {
1582 #ifndef PRODUCT
1583 if (PrintCompilation && (Verbose || WizardMode))
1584 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
1585 #endif
1586 ThreadInVMfromNative tivfn(JavaThread::current());
1587 }
1588 }
1591 // ------------------------------------------------------------------
1592 // CompileBroker::invoke_compiler_on_method
1593 //
1594 // Compile a method.
1595 //
1596 void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
1597 if (PrintCompilation) {
1598 ResourceMark rm;
1599 task->print_line();
1600 }
1601 elapsedTimer time;
1603 CompilerThread* thread = CompilerThread::current();
1604 ResourceMark rm(thread);
1606 // Common flags.
1607 uint compile_id = task->compile_id();
1608 int osr_bci = task->osr_bci();
1609 bool is_osr = (osr_bci != standard_entry_bci);
1610 bool should_log = (thread->log() != NULL);
1611 bool should_break = false;
1612 {
1613 // create the handle inside it's own block so it can't
1614 // accidentally be referenced once the thread transitions to
1615 // native. The NoHandleMark before the transition should catch
1616 // any cases where this occurs in the future.
1617 methodHandle method(thread,
1618 (methodOop)JNIHandles::resolve(task->method_handle()));
1619 should_break = check_break_at(method, compile_id, is_osr);
1620 if (should_log && !CompilerOracle::should_log(method)) {
1621 should_log = false;
1622 }
1623 assert(!method->is_native(), "no longer compile natives");
1625 // Save information about this method in case of failure.
1626 set_last_compile(thread, method, is_osr, task->comp_level());
1628 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
1629 }
1631 // Allocate a new set of JNI handles.
1632 push_jni_handle_block();
1633 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle()));
1634 int compilable = ciEnv::MethodCompilable;
1635 {
1636 int system_dictionary_modification_counter;
1637 {
1638 MutexLocker locker(Compile_lock, thread);
1639 system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1640 }
1642 NoHandleMark nhm;
1643 ThreadToNativeFromVM ttn(thread);
1645 ciEnv ci_env(task, system_dictionary_modification_counter);
1646 if (should_break) {
1647 ci_env.set_break_at_compile(true);
1648 }
1649 if (should_log) {
1650 ci_env.set_log(thread->log());
1651 }
1652 assert(thread->env() == &ci_env, "set by ci_env");
1653 // The thread-env() field is cleared in ~CompileTaskWrapper.
1655 // Cache Jvmti state
1656 ci_env.cache_jvmti_state();
1658 // Cache DTrace flags
1659 ci_env.cache_dtrace_flags();
1661 ciMethod* target = ci_env.get_method_from_handle(target_handle);
1663 TraceTime t1("compilation", &time);
1665 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
1667 if (!ci_env.failing() && task->code() == NULL) {
1668 //assert(false, "compiler should always document failure");
1669 // The compiler elected, without comment, not to register a result.
1670 // Do not attempt further compilations of this method.
1671 ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
1672 }
1674 if (ci_env.failing()) {
1675 // Copy this bit to the enclosing block:
1676 compilable = ci_env.compilable();
1677 if (PrintCompilation) {
1678 const char* reason = ci_env.failure_reason();
1679 if (compilable == ciEnv::MethodCompilable_not_at_tier) {
1680 tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason);
1681 } else if (compilable == ciEnv::MethodCompilable_never) {
1682 tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason);
1683 } else if (compilable == ciEnv::MethodCompilable) {
1684 tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason);
1685 }
1686 }
1687 } else {
1688 task->mark_success();
1689 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
1690 }
1691 }
1692 pop_jni_handle_block();
1694 methodHandle method(thread,
1695 (methodOop)JNIHandles::resolve(task->method_handle()));
1697 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
1699 collect_statistics(thread, time, task);
1701 if (compilable == ciEnv::MethodCompilable_never) {
1702 if (is_osr) {
1703 method->set_not_osr_compilable();
1704 } else {
1705 method->set_not_compilable_quietly();
1706 }
1707 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) {
1708 method->set_not_compilable_quietly(task->comp_level());
1709 }
1711 // Note that the queued_for_compilation bits are cleared without
1712 // protection of a mutex. [They were set by the requester thread,
1713 // when adding the task to the complie queue -- at which time the
1714 // compile queue lock was held. Subsequently, we acquired the compile
1715 // queue lock to get this task off the compile queue; thus (to belabour
1716 // the point somewhat) our clearing of the bits must be occurring
1717 // only after the setting of the bits. See also 14012000 above.
1718 method->clear_queued_for_compilation();
1720 #ifdef ASSERT
1721 if (CollectedHeap::fired_fake_oom()) {
1722 // The current compile received a fake OOM during compilation so
1723 // go ahead and exit the VM since the test apparently succeeded
1724 tty->print_cr("*** Shutting down VM after successful fake OOM");
1725 vm_exit(0);
1726 }
1727 #endif
1728 }
1730 // ------------------------------------------------------------------
1731 // CompileBroker::handle_full_code_cache
1732 //
1733 // The CodeCache is full. Print out warning and disable compilation or
1734 // try code cache cleaning so compilation can continue later.
1735 void CompileBroker::handle_full_code_cache() {
1736 UseInterpreter = true;
1737 if (UseCompiler || AlwaysCompileLoopMethods ) {
1738 if (xtty != NULL) {
1739 xtty->begin_elem("code_cache_full");
1740 CodeCache::log_state(xtty);
1741 xtty->stamp();
1742 xtty->end_elem();
1743 }
1744 warning("CodeCache is full. Compiler has been disabled.");
1745 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
1746 CodeCache::print_bounds(tty);
1747 #ifndef PRODUCT
1748 if (CompileTheWorld || ExitOnFullCodeCache) {
1749 before_exit(JavaThread::current());
1750 exit_globals(); // will delete tty
1751 vm_direct_exit(CompileTheWorld ? 0 : 1);
1752 }
1753 #endif
1754 if (UseCodeCacheFlushing) {
1755 NMethodSweeper::handle_full_code_cache(true);
1756 } else {
1757 UseCompiler = false;
1758 AlwaysCompileLoopMethods = false;
1759 }
1760 }
1761 }
1763 // ------------------------------------------------------------------
1764 // CompileBroker::set_last_compile
1765 //
1766 // Record this compilation for debugging purposes.
1767 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
1768 ResourceMark rm;
1769 char* method_name = method->name()->as_C_string();
1770 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
1771 char current_method[CompilerCounters::cmname_buffer_length];
1772 size_t maxLen = CompilerCounters::cmname_buffer_length;
1774 if (UsePerfData) {
1775 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string();
1777 size_t s1len = strlen(class_name);
1778 size_t s2len = strlen(method_name);
1780 // check if we need to truncate the string
1781 if (s1len + s2len + 2 > maxLen) {
1783 // the strategy is to lop off the leading characters of the
1784 // class name and the trailing characters of the method name.
1786 if (s2len + 2 > maxLen) {
1787 // lop of the entire class name string, let snprintf handle
1788 // truncation of the method name.
1789 class_name += s1len; // null string
1790 }
1791 else {
1792 // lop off the extra characters from the front of the class name
1793 class_name += ((s1len + s2len + 2) - maxLen);
1794 }
1795 }
1797 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
1798 }
1800 if (CICountOSR && is_osr) {
1801 _last_compile_type = osr_compile;
1802 } else {
1803 _last_compile_type = normal_compile;
1804 }
1805 _last_compile_level = comp_level;
1807 if (UsePerfData) {
1808 CompilerCounters* counters = thread->counters();
1809 counters->set_current_method(current_method);
1810 counters->set_compile_type((jlong)_last_compile_type);
1811 }
1812 }
1815 // ------------------------------------------------------------------
1816 // CompileBroker::push_jni_handle_block
1817 //
1818 // Push on a new block of JNI handles.
1819 void CompileBroker::push_jni_handle_block() {
1820 JavaThread* thread = JavaThread::current();
1822 // Allocate a new block for JNI handles.
1823 // Inlined code from jni_PushLocalFrame()
1824 JNIHandleBlock* java_handles = thread->active_handles();
1825 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
1826 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
1827 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
1828 thread->set_active_handles(compile_handles);
1829 }
1832 // ------------------------------------------------------------------
1833 // CompileBroker::pop_jni_handle_block
1834 //
1835 // Pop off the current block of JNI handles.
1836 void CompileBroker::pop_jni_handle_block() {
1837 JavaThread* thread = JavaThread::current();
1839 // Release our JNI handle block
1840 JNIHandleBlock* compile_handles = thread->active_handles();
1841 JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
1842 thread->set_active_handles(java_handles);
1843 compile_handles->set_pop_frame_link(NULL);
1844 JNIHandleBlock::release_block(compile_handles, thread); // may block
1845 }
1848 // ------------------------------------------------------------------
1849 // CompileBroker::check_break_at
1850 //
1851 // Should the compilation break at the current compilation.
1852 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
1853 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
1854 return true;
1855 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
1856 return true;
1857 } else {
1858 return (compile_id == CIBreakAt);
1859 }
1860 }
1862 // ------------------------------------------------------------------
1863 // CompileBroker::collect_statistics
1864 //
1865 // Collect statistics about the compilation.
1867 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
1868 bool success = task->is_success();
1869 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle()));
1870 uint compile_id = task->compile_id();
1871 bool is_osr = (task->osr_bci() != standard_entry_bci);
1872 nmethod* code = task->code();
1873 CompilerCounters* counters = thread->counters();
1875 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
1876 MutexLocker locker(CompileStatistics_lock);
1878 // _perf variables are production performance counters which are
1879 // updated regardless of the setting of the CITime and CITimeEach flags
1880 //
1881 if (!success) {
1882 _total_bailout_count++;
1883 if (UsePerfData) {
1884 _perf_last_failed_method->set_value(counters->current_method());
1885 _perf_last_failed_type->set_value(counters->compile_type());
1886 _perf_total_bailout_count->inc();
1887 }
1888 } else if (code == NULL) {
1889 if (UsePerfData) {
1890 _perf_last_invalidated_method->set_value(counters->current_method());
1891 _perf_last_invalidated_type->set_value(counters->compile_type());
1892 _perf_total_invalidated_count->inc();
1893 }
1894 _total_invalidated_count++;
1895 } else {
1896 // Compilation succeeded
1898 // update compilation ticks - used by the implementation of
1899 // java.lang.management.CompilationMBean
1900 _perf_total_compilation->inc(time.ticks());
1902 if (CITime) {
1903 _t_total_compilation.add(time);
1904 if (is_osr) {
1905 _t_osr_compilation.add(time);
1906 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1907 } else {
1908 _t_standard_compilation.add(time);
1909 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1910 }
1911 }
1913 if (UsePerfData) {
1914 // save the name of the last method compiled
1915 _perf_last_method->set_value(counters->current_method());
1916 _perf_last_compile_type->set_value(counters->compile_type());
1917 _perf_last_compile_size->set_value(method->code_size() +
1918 task->num_inlined_bytecodes());
1919 if (is_osr) {
1920 _perf_osr_compilation->inc(time.ticks());
1921 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1922 } else {
1923 _perf_standard_compilation->inc(time.ticks());
1924 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1925 }
1926 }
1928 if (CITimeEach) {
1929 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
1930 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
1931 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
1932 }
1934 // Collect counts of successful compilations
1935 _sum_nmethod_size += code->total_size();
1936 _sum_nmethod_code_size += code->insts_size();
1937 _total_compile_count++;
1939 if (UsePerfData) {
1940 _perf_sum_nmethod_size->inc( code->total_size());
1941 _perf_sum_nmethod_code_size->inc(code->insts_size());
1942 _perf_total_compile_count->inc();
1943 }
1945 if (is_osr) {
1946 if (UsePerfData) _perf_total_osr_compile_count->inc();
1947 _total_osr_compile_count++;
1948 } else {
1949 if (UsePerfData) _perf_total_standard_compile_count->inc();
1950 _total_standard_compile_count++;
1951 }
1952 }
1953 // set the current method for the thread to null
1954 if (UsePerfData) counters->set_current_method("");
1955 }
1959 void CompileBroker::print_times() {
1960 tty->cr();
1961 tty->print_cr("Accumulated compiler times (for compiled methods only)");
1962 tty->print_cr("------------------------------------------------");
1963 //0000000000111111111122222222223333333333444444444455555555556666666666
1964 //0123456789012345678901234567890123456789012345678901234567890123456789
1965 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
1966 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
1967 CompileBroker::_t_standard_compilation.seconds(),
1968 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
1969 tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count);
1971 if (compiler(CompLevel_simple) != NULL) {
1972 compiler(CompLevel_simple)->print_timers();
1973 }
1974 if (compiler(CompLevel_full_optimization) != NULL) {
1975 compiler(CompLevel_full_optimization)->print_timers();
1976 }
1977 tty->cr();
1978 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
1979 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
1980 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
1981 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
1982 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
1983 tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
1984 tty->cr();
1985 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
1986 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
1987 }
1990 // Debugging output for failure
1991 void CompileBroker::print_last_compile() {
1992 if ( _last_compile_level != CompLevel_none &&
1993 compiler(_last_compile_level) != NULL &&
1994 _last_method_compiled != NULL &&
1995 _last_compile_type != no_compile) {
1996 if (_last_compile_type == osr_compile) {
1997 tty->print_cr("Last parse: [osr]%d+++(%d) %s",
1998 _osr_compilation_id, _last_compile_level, _last_method_compiled);
1999 } else {
2000 tty->print_cr("Last parse: %d+++(%d) %s",
2001 _compilation_id, _last_compile_level, _last_method_compiled);
2002 }
2003 }
2004 }
2007 void CompileBroker::print_compiler_threads_on(outputStream* st) {
2008 #ifndef PRODUCT
2009 st->print_cr("Compiler thread printing unimplemented.");
2010 st->cr();
2011 #endif
2012 }
