New src/share/vm/compiler/compileBroker.cpp (original) (raw)

1 /* 2 * Copyright (c) 1999, 2015, 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 "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/methodData.hpp" 35 #include "oops/method.hpp" 36 #include "oops/oop.inline.hpp" 37 #include "prims/nativeLookup.hpp" 38 #include "prims/whitebox.hpp" 39 #include "runtime/arguments.hpp" 40 #include "runtime/atomic.inline.hpp" 41 #include "runtime/compilationPolicy.hpp" 42 #include "runtime/init.hpp" 43 #include "runtime/interfaceSupport.hpp" 44 #include "runtime/javaCalls.hpp" 45 #include "runtime/os.hpp" 46 #include "runtime/sharedRuntime.hpp" 47 #include "runtime/sweeper.hpp" 48 #include "trace/tracing.hpp" 49 #include "utilities/dtrace.hpp" 50 #include "utilities/events.hpp" 51 #ifdef COMPILER1 52 #include "c1/c1_Compiler.hpp" 53 #endif 54 #if INCLUDE_JVMCI 55 #include "jvmci/jvmciCompiler.hpp" 56 #include "jvmci/jvmciRuntime.hpp" 57 #include "runtime/vframe.hpp" 58 #endif 59 #ifdef COMPILER2 60 #include "opto/c2compiler.hpp" 61 #endif 62 #ifdef SHARK 63 #include "shark/sharkCompiler.hpp" 64 #endif 65 66 #ifdef DTRACE_ENABLED 67 68 // Only bother with this argument setup if dtrace is available 69 70 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name)
71 {
72 Symbol klass_name = (method)->klass_name();
73 Symbol* name = (method)->name();
74 Symbol* signature = (method)->signature();
75 HOTSPOT_METHOD_COMPILE_BEGIN(
76 (char ) comp_name, strlen(comp_name),
77 (char ) klass_name->bytes(), klass_name->utf8_length(),
78 (char ) name->bytes(), name->utf8_length(),
79 (char ) signature->bytes(), signature->utf8_length());
80 } 81 82 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success)
83 {
84 Symbol klass_name = (method)->klass_name();
85 Symbol name = (method)->name();
86 Symbol signature = (method)->signature();
87 HOTSPOT_METHOD_COMPILE_END(
88 (char ) comp_name, strlen(comp_name),
89 (char ) klass_name->bytes(), klass_name->utf8_length(),
90 (char ) name->bytes(), name->utf8_length(),
91 (char ) signature->bytes(), signature->utf8_length(), (success));
92 } 93 94 #else // ndef DTRACE_ENABLED 95 96 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) 97 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) 98 99 #endif // ndef DTRACE_ENABLED 100 101 bool CompileBroker::_initialized = false; 102 volatile bool CompileBroker::_should_block = false; 103 volatile jint CompileBroker::_print_compilation_warning = 0; 104 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; 105 106 // The installed compiler(s) 107 AbstractCompiler CompileBroker::_compilers[2]; 108 109 // These counters are used to assign an unique ID to each compilation. 110 volatile jint CompileBroker::_compilation_id = 0; 111 volatile jint CompileBroker::_osr_compilation_id = 0; 112 113 // Debugging information 114 int CompileBroker::_last_compile_type = no_compile; 115 int CompileBroker::_last_compile_level = CompLevel_none; 116 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; 117 118 // Performance counters 119 PerfCounter CompileBroker::_perf_total_compilation = NULL; 120 PerfCounter CompileBroker::_perf_osr_compilation = NULL; 121 PerfCounter CompileBroker::_perf_standard_compilation = NULL; 122 123 PerfCounter CompileBroker::_perf_total_bailout_count = NULL; 124 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; 125 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; 126 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; 127 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; 128 129 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; 130 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; 131 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; 132 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; 133 134 PerfStringVariable* CompileBroker::_perf_last_method = NULL; 135 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; 136 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; 137 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; 138 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; 139 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; 140 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; 141 142 // Timers and counters for generating statistics 143 elapsedTimer CompileBroker::_t_total_compilation; 144 elapsedTimer CompileBroker::_t_osr_compilation; 145 elapsedTimer CompileBroker::_t_standard_compilation; 146 elapsedTimer CompileBroker::_t_invalidated_compilation; 147 elapsedTimer CompileBroker::_t_bailedout_compilation; 148 149 int CompileBroker::_total_bailout_count = 0; 150 int CompileBroker::_total_invalidated_count = 0; 151 int CompileBroker::_total_compile_count = 0; 152 int CompileBroker::_total_osr_compile_count = 0; 153 int CompileBroker::_total_standard_compile_count = 0; 154 155 int CompileBroker::_sum_osr_bytes_compiled = 0; 156 int CompileBroker::_sum_standard_bytes_compiled = 0; 157 int CompileBroker::_sum_nmethod_size = 0; 158 int CompileBroker::_sum_nmethod_code_size = 0; 159 160 long CompileBroker::_peak_compilation_time = 0; 161 162 CompileQueue* CompileBroker::_c2_compile_queue = NULL; 163 CompileQueue* CompileBroker::_c1_compile_queue = NULL; 164 165 166 class CompilationLog : public StringEventLog { 167 public: 168 CompilationLog() : StringEventLog("Compilation events") { 169 } 170 171 void log_compile(JavaThread* thread, CompileTask* task) { 172 StringLogMessage lm; 173 stringStream sstr = lm.stream(); 174 // msg.time_stamp().update_to(tty->time_stamp().ticks()); 175 task->print_compilation(&sstr, NULL, true, false); 176 log(thread, "%s", (const char*)lm); 177 } 178 179 void log_nmethod(JavaThread* thread, nmethod* nm) { 180 log(thread, "nmethod %d%s " INTPTR_FORMAT " code [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", 181 nm->compile_id(), nm->is_osr_method() ? "%" : "", 182 p2i(nm), p2i(nm->code_begin()), p2i(nm->code_end())); 183 } 184 185 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { 186 StringLogMessage lm; 187 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); 188 if (retry_message != NULL) { 189 lm.append(" (%s)", retry_message); 190 } 191 lm.print("\n"); 192 log(thread, "%s", (const char*)lm); 193 } 194 195 void log_metaspace_failure(const char* reason) { 196 ResourceMark rm; 197 StringLogMessage lm; 198 lm.print("%4d COMPILE PROFILING SKIPPED: %s", -1, reason); 199 lm.print("\n"); 200 log(JavaThread::current(), "%s", (const char*)lm); 201 } 202 }; 203 204 static CompilationLog* _compilation_log = NULL; 205 206 void compileBroker_init() { 207 if (LogEvents) { 208 _compilation_log = new CompilationLog(); 209 } 210 } 211 212 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { 213 CompilerThread* thread = CompilerThread::current(); 214 thread->set_task(task); 215 CompileLog* log = thread->log(); 216 if (log != NULL) task->log_task_start(log); 217 } 218 219 CompileTaskWrapper::~CompileTaskWrapper() { 220 CompilerThread* thread = CompilerThread::current(); 221 CompileTask* task = thread->task(); 222 CompileLog* log = thread->log(); 223 if (log != NULL) task->log_task_done(log); 224 thread->set_task(NULL); 225 task->set_code_handle(NULL); 226 thread->set_env(NULL); 227 if (task->is_blocking()) { 228 MutexLocker notifier(task->lock(), thread); 229 task->mark_complete(); 230 // Notify the waiting thread that the compilation has completed. 231 task->lock()->notify_all(); 232 } else { 233 task->mark_complete(); 234 235 // By convention, the compiling thread is responsible for 236 // recycling a non-blocking CompileTask. 237 CompileTask::free(task); 238 } 239 } 240 241 242 CompileTask* CompileTask::_task_free_list = NULL; 243 #ifdef ASSERT 244 int CompileTask::_num_allocated_tasks = 0; 245 #endif 246 /** 247 * Allocate a CompileTask, from the free list if possible. 248 / 249 CompileTask CompileTask::allocate() { 250 MutexLocker locker(CompileTaskAlloc_lock); 251 CompileTask* task = NULL; 252 253 if (_task_free_list != NULL) { 254 task = _task_free_list; 255 _task_free_list = task->next(); 256 task->set_next(NULL); 257 } else { 258 task = new CompileTask(); 259 DEBUG_ONLY(_num_allocated_tasks++;) 260 assert (WhiteBoxAPI || _num_allocated_tasks < 10000, "Leaking compilation tasks?"); 261 task->set_next(NULL); 262 task->set_is_free(true); 263 } 264 assert(task->is_free(), "Task must be free."); 265 task->set_is_free(false); 266 return task; 267 } 268 269 270 /** 271 * Add a task to the free list. 272 / 273 void CompileTask::free(CompileTask task) { 274 MutexLocker locker(CompileTaskAlloc_lock); 275 if (!task->is_free()) { 276 task->set_code(NULL); 277 assert(!task->lock()->is_locked(), "Should not be locked when freed"); 278 JNIHandles::destroy_global(task->_method_holder); 279 JNIHandles::destroy_global(task->_hot_method_holder); 280 281 task->set_is_free(true); 282 task->set_next(_task_free_list); 283 _task_free_list = task; 284 } 285 } 286 287 void CompileTask::initialize(int compile_id, 288 methodHandle method, 289 int osr_bci, 290 int comp_level, 291 methodHandle hot_method, 292 int hot_count, 293 const char* comment, 294 bool is_blocking) { 295 assert(!_lock->is_locked(), "bad locking"); 296 297 _compile_id = compile_id; 298 _method = method(); 299 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); 300 _osr_bci = osr_bci; 301 _is_blocking = is_blocking; 302 _comp_level = comp_level; 303 _num_inlined_bytecodes = 0; 304 305 _is_complete = false; 306 _is_success = false; 307 _code_handle = NULL; 308 309 _hot_method = NULL; 310 _hot_method_holder = NULL; 311 _hot_count = hot_count; 312 _time_queued = 0; // tidy 313 _comment = comment; 314 _failure_reason = NULL; 315 316 if (LogCompilation) { 317 _time_queued = os::elapsed_counter(); 318 if (hot_method.not_null()) { 319 if (hot_method == method) { 320 _hot_method = _method; 321 } else { 322 _hot_method = hot_method(); 323 // only add loader or mirror if different from _method_holder 324 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); 325 } 326 } 327 } 328 329 _next = NULL; 330 } 331 332 // ------------------------------------------------------------------ 333 // CompileTask::code/set_code 334 nmethod* CompileTask::code() const { 335 if (_code_handle == NULL) return NULL; 336 return _code_handle->code(); 337 } 338 void CompileTask::set_code(nmethod* nm) { 339 if (_code_handle == NULL && nm == NULL) return; 340 guarantee(_code_handle != NULL, ""); 341 _code_handle->set_code(nm); 342 if (nm == NULL) _code_handle = NULL; // drop the handle also 343 } 344 345 void CompileTask::mark_on_stack() { 346 // Mark these methods as something redefine classes cannot remove. 347 _method->set_on_stack(true); 348 if (_hot_method != NULL) { 349 _hot_method->set_on_stack(true); 350 } 351 } 352 353 // RedefineClasses support 354 void CompileTask::metadata_do(void f(Metadata*)) { 355 f(method()); 356 if (hot_method() != NULL && hot_method() != method()) { 357 f(hot_method()); 358 } 359 } 360 361 // ------------------------------------------------------------------ 362 // CompileTask::print_line_on_error 363 // 364 // This function is called by fatal error handler when the thread 365 // causing troubles is a compiler thread. 366 // 367 // Do not grab any lock, do not allocate memory. 368 // 369 // Otherwise it's the same as CompileTask::print_line() 370 // 371 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { 372 // print compiler name 373 st->print("%s:", CompileBroker::compiler_name(comp_level())); 374 print_compilation(st); 375 } 376 377 // ------------------------------------------------------------------ 378 // CompileTask::print_line 379 void CompileTask::print_tty() { 380 ttyLocker ttyl; // keep the following output all in one block 381 // print compiler name if requested 382 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); 383 print_compilation(tty); 384 } 385 386 // ------------------------------------------------------------------ 387 // CompileTask::print_compilation_impl 388 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, 389 bool is_osr_method, int osr_bci, bool is_blocking, 390 const char* msg, bool short_form, bool cr) { 391 if (!short_form) { 392 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp 393 } 394 // print compiler name if requested 395 if (CIPrintCompilerName) st->print("%s:", CompileBroker::compiler_name(comp_level)); 396 st->print("%4d ", compile_id); // print compilation number 397 398 // For unloaded methods the transition to zombie occurs after the 399 // method is cleared so it's impossible to report accurate 400 // information for that case. 401 bool is_synchronized = false; 402 bool has_exception_handler = false; 403 bool is_native = false; 404 if (method != NULL) { 405 is_synchronized = method->is_synchronized(); 406 has_exception_handler = method->has_exception_handler(); 407 is_native = method->is_native(); 408 } 409 // method attributes 410 const char compile_type = is_osr_method ? '%' : ' '; 411 const char sync_char = is_synchronized ? 's' : ' '; 412 const char exception_char = has_exception_handler ? '!' : ' '; 413 const char blocking_char = is_blocking ? 'b' : ' '; 414 const char native_char = is_native ? 'n' : ' '; 415 416 // print method attributes 417 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); 418 419 if (TieredCompilation) { 420 if (comp_level != -1) st->print("%d ", comp_level); 421 else st->print("- "); 422 } 423 st->print(" "); // more indent 424 425 if (method == NULL) { 426 st->print("(method)"); 427 } else { 428 method->print_short_name(st); 429 if (is_osr_method) { 430 st->print(" @ %d", osr_bci); 431 } 432 if (method->is_native()) 433 st->print(" (native)"); 434 else 435 st->print(" (%d bytes)", method->code_size()); 436 } 437 438 if (msg != NULL) { 439 st->print(" %s", msg); 440 } 441 if (cr) { 442 st->cr(); 443 } 444 } 445 446 // ------------------------------------------------------------------ 447 // CompileTask::print_inlining 448 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { 449 // 1234567 450 st->print(" "); // print timestamp 451 // 1234 452 st->print(" "); // print compilation number 453 454 // method attributes 455 if (method->is_loaded()) { 456 const char sync_char = method->is_synchronized() ? 's' : ' '; 457 const char exception_char = method->has_exception_handlers() ? '!' : ' '; 458 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; 459 460 // print method attributes 461 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); 462 } else { 463 // %s!bn 464 st->print(" "); // print method attributes 465 } 466 467 if (TieredCompilation) { 468 st->print(" "); 469 } 470 st->print(" "); // more indent 471 st->print(" "); // initial inlining indent 472 473 for (int i = 0; i < inline_level; i++) st->print(" "); 474 475 st->print("@ %d ", bci); // print bci 476 method->print_short_name(st); 477 if (method->is_loaded()) 478 st->print(" (%d bytes)", method->code_size()); 479 else 480 st->print(" (not loaded)"); 481 482 if (msg != NULL) { 483 st->print(" %s", msg); 484 } 485 st->cr(); 486 } 487 488 // ------------------------------------------------------------------ 489 // CompileTask::print_inline_indent 490 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { 491 // 1234567 492 st->print(" "); // print timestamp 493 // 1234 494 st->print(" "); // print compilation number 495 // %s!bn 496 st->print(" "); // print method attributes 497 if (TieredCompilation) { 498 st->print(" "); 499 } 500 st->print(" "); // more indent 501 st->print(" "); // initial inlining indent 502 for (int i = 0; i < inline_level; i++) st->print(" "); 503 } 504 505 // ------------------------------------------------------------------ 506 // CompileTask::print_compilation 507 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form, bool cr) { 508 bool is_osr_method = osr_bci() != InvocationEntryBci; 509 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form, cr); 510 } 511 512 // ------------------------------------------------------------------ 513 // CompileTask::log_task 514 void CompileTask::log_task(xmlStream* log) { 515 Thread* thread = Thread::current(); 516 methodHandle method(thread, this->method()); 517 ResourceMark rm(thread); 518 519 // 520 log->print(" compiler='%s' compile_id='%d'", _comp_level <= CompLevel_full_profile ? "C1" : "C2", _compile_id); 521 if (_osr_bci != CompileBroker::standard_entry_bci) { 522 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind 523 } // else compile_kind='c2c' 524 if (!method.is_null()) log->method(method); 525 if (_osr_bci != CompileBroker::standard_entry_bci) { 526 log->print(" osr_bci='%d'", _osr_bci); 527 } 528 // Always print the level in tiered. 529 if (_comp_level != CompLevel_highest_tier || TieredCompilation) { 530 log->print(" level='%d'", _comp_level); 531 } 532 if (_is_blocking) { 533 log->print(" blocking='1'"); 534 } 535 log->stamp(); 536 } 537 538 539 // ------------------------------------------------------------------ 540 // CompileTask::log_task_queued 541 void CompileTask::log_task_queued() { 542 Thread* thread = Thread::current(); 543 ttyLocker ttyl; 544 ResourceMark rm(thread); 545 546 xtty->begin_elem("task_queued"); 547 log_task(xtty); 548 if (_comment != NULL) { 549 xtty->print(" comment='%s'", _comment); 550 } 551 if (_hot_method != NULL) { 552 methodHandle hot(thread, _hot_method); 553 methodHandle method(thread, _method); 554 if (hot() != method()) { 555 xtty->method(hot); 556 } 557 } 558 if (_hot_count != 0) { 559 xtty->print(" hot_count='%d'", _hot_count); 560 } 561 xtty->end_elem(); 562 } 563 564 565 // ------------------------------------------------------------------ 566 // CompileTask::log_task_dequeued 567 void CompileTask::log_task_dequeued(const char* comment) { 568 if (LogCompilation && xtty != NULL) { 569 Thread* thread = Thread::current(); 570 ttyLocker ttyl; 571 ResourceMark rm(thread); 572 573 xtty->begin_elem("task_dequeued"); 574 log_task(xtty); 575 if (comment != NULL) { 576 xtty->print(" comment='%s'", comment); 577 } 578 xtty->end_elem(); 579 } 580 } 581 582 583 // ------------------------------------------------------------------ 584 // CompileTask::log_task_start 585 void CompileTask::log_task_start(CompileLog* log) { 586 log->begin_head("task"); 587 log_task(log); 588 log->end_head(); 589 } 590 591 592 // ------------------------------------------------------------------ 593 // CompileTask::log_task_done 594 void CompileTask::log_task_done(CompileLog* log) { 595 Thread* thread = Thread::current(); 596 methodHandle method(thread, this->method()); 597 ResourceMark rm(thread); 598 599 if (!_is_success) { 600 const char* reason = _failure_reason != NULL ? _failure_reason : "unknown"; 601 log->elem("failure reason='%s'", reason); 602 } 603 604 // <task_done ... stamp='1.234'> 605 nmethod* nm = code(); 606 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", 607 _is_success, nm == NULL ? 0 : nm->content_size(), 608 method->invocation_count()); 609 int bec = method->backedge_count(); 610 if (bec != 0) log->print(" backedge_count='%d'", bec); 611 // Note: "_is_complete" is about to be set, but is not. 612 if (_num_inlined_bytecodes != 0) { 613 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); 614 } 615 log->stamp(); 616 log->end_elem(); 617 log->tail("task"); 618 log->clear_identities(); // next task will have different CI 619 if (log->unflushed_count() > 2000) { 620 log->flush(); 621 } 622 log->mark_file_end(); 623 } 624 625 626 627 /** 628 * Add a CompileTask to a CompileQueue. 629 / 630 void CompileQueue::add(CompileTask task) { 631 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock"); 632 633 task->set_next(NULL); 634 task->set_prev(NULL); 635 636 if (_last == NULL) { 637 // The compile queue is empty. 638 assert(_first == NULL, "queue is empty"); 639 _first = task; 640 _last = task; 641 } else { 642 // Append the task to the queue. 643 assert(_last->next() == NULL, "not last"); 644 _last->set_next(task); 645 task->set_prev(_last); 646 _last = task; 647 } 648 ++_size; 649 650 // Mark the method as being in the compile queue. 651 task->method()->set_queued_for_compilation(); 652 653 if (CIPrintCompileQueue) { 654 print_tty(); 655 } 656 657 if (LogCompilation && xtty != NULL) { 658 task->log_task_queued(); 659 } 660 661 // Notify CompilerThreads that a task is available. 662 MethodCompileQueue_lock->notify_all(); 663 } 664 665 /** 666 * Empties compilation queue by putting all compilation tasks onto 667 * a freelist. Furthermore, the method wakes up all threads that are 668 * waiting on a compilation task to finish. This can happen if background 669 * compilation is disabled. 670 / 671 void CompileQueue::free_all() { 672 MutexLocker mu(MethodCompileQueue_lock); 673 CompileTask next = _first; 674 675 // Iterate over all tasks in the compile queue 676 while (next != NULL) { 677 CompileTask* current = next; 678 next = current->next(); 679 { 680 // Wake up thread that blocks on the compile task. 681 MutexLocker ct_lock(current->lock()); 682 current->lock()->notify(); 683 } 684 // Put the task back on the freelist. 685 CompileTask::free(current); 686 } 687 _first = NULL; 688 689 // Wake up all threads that block on the queue. 690 MethodCompileQueue_lock->notify_all(); 691 } 692 693 /** 694 * Get the next CompileTask from a CompileQueue 695 / 696 CompileTask CompileQueue::get() { 697 // save methods from RedefineClasses across safepoint 698 // across MethodCompileQueue_lock below. 699 methodHandle save_method; 700 methodHandle save_hot_method; 701 702 MutexLocker locker(MethodCompileQueue_lock); 703 // If _first is NULL we have no more compile jobs. There are two reasons for 704 // having no compile jobs: First, we compiled everything we wanted. Second, 705 // we ran out of code cache so compilation has been disabled. In the latter 706 // case we perform code cache sweeps to free memory such that we can re-enable 707 // compilation. 708 while (_first == NULL) { 709 // Exit loop if compilation is disabled forever 710 if (CompileBroker::is_compilation_disabled_forever()) { 711 return NULL; 712 } 713 714 // If there are no compilation tasks and we can compile new jobs 715 // (i.e., there is enough free space in the code cache) there is 716 // no need to invoke the sweeper. As a result, the hotness of methods 717 // remains unchanged. This behavior is desired, since we want to keep 718 // the stable state, i.e., we do not want to evict methods from the 719 // code cache if it is unnecessary. 720 // We need a timed wait here, since compiler threads can exit if compilation 721 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads 722 // is not critical and we do not want idle compiler threads to wake up too often. 723 MethodCompileQueue_lock->wait(!Mutex::_no_safepoint_check_flag, 51000); 724 } 725 726 if (CompileBroker::is_compilation_disabled_forever()) { 727 return NULL; 728 } 729 730 CompileTask task; 731 { 732 No_Safepoint_Verifier nsv; 733 task = CompilationPolicy::policy()->select_task(this); 734 } 735 736 // Save method pointers across unlock safepoint. The task is removed from 737 // the compilation queue, which is walked during RedefineClasses. 738 save_method = methodHandle(task->method()); 739 save_hot_method = methodHandle(task->hot_method()); 740 741 remove(task); 742 purge_stale_tasks(); // may temporarily release MCQ lock 743 return task; 744 } 745 746 // Clean & deallocate stale compile tasks. 747 // Temporarily releases MethodCompileQueue lock. 748 void CompileQueue::purge_stale_tasks() { 749 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock"); 750 if (_first_stale != NULL) { 751 // Stale tasks are purged when MCQ lock is released, 752 // but _first_stale updates are protected by MCQ lock. 753 // Once task processing starts and MCQ lock is released, 754 // other compiler threads can reuse _first_stale. 755 CompileTask* head = _first_stale; 756 _first_stale = NULL; 757 { 758 MutexUnlocker ul(MethodCompileQueue_lock); 759 for (CompileTask* task = head; task != NULL; ) { 760 CompileTask* next_task = task->next(); 761 CompileTaskWrapper ctw(task); // Frees the task 762 task->set_failure_reason("stale task"); 763 task = next_task; 764 } 765 } 766 } 767 } 768 769 void CompileQueue::remove(CompileTask* task) { 770 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock"); 771 if (task->prev() != NULL) { 772 task->prev()->set_next(task->next()); 773 } else { 774 // max is the first element 775 assert(task == _first, "Sanity"); 776 _first = task->next(); 777 } 778 779 if (task->next() != NULL) { 780 task->next()->set_prev(task->prev()); 781 } else { 782 // max is the last element 783 assert(task == _last, "Sanity"); 784 _last = task->prev(); 785 } 786 --_size; 787 } 788 789 void CompileQueue::remove_and_mark_stale(CompileTask* task) { 790 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock"); 791 remove(task); 792 793 // Enqueue the task for reclamation (should be done outside MCQ lock) 794 task->set_next(_first_stale); 795 task->set_prev(NULL); 796 _first_stale = task; 797 } 798 799 // methods in the compile queue need to be marked as used on the stack 800 // so that they don't get reclaimed by Redefine Classes 801 void CompileQueue::mark_on_stack() { 802 CompileTask* task = _first; 803 while (task != NULL) { 804 task->mark_on_stack(); 805 task = task->next(); 806 } 807 } 808 809 810 CompileQueue* CompileBroker::compile_queue(int comp_level) { 811 if (is_c2_compile(comp_level)) return _c2_compile_queue; 812 if (is_c1_compile(comp_level)) return _c1_compile_queue; 813 return NULL; 814 } 815 816 817 void CompileBroker::print_compile_queues(outputStream* st) { 818 MutexLocker locker(MethodCompileQueue_lock); 819 if (_c1_compile_queue != NULL) { 820 _c1_compile_queue->print(st); 821 } 822 if (_c2_compile_queue != NULL) { 823 _c2_compile_queue->print(st); 824 } 825 } 826 827 void CompileQueue::print(outputStream* st) { 828 assert(MethodCompileQueue_lock->owned_by_self(), "must own lock"); 829 st->print_cr("Contents of %s", name()); 830 st->print_cr("----------------------------"); 831 CompileTask* task = _first; 832 if (task == NULL) { 833 st->print_cr("Empty"); 834 } else { 835 while (task != NULL) { 836 task->print_compilation(st, NULL, true, true); 837 task = task->next(); 838 } 839 } 840 st->print_cr("----------------------------"); 841 } 842 843 void CompileQueue::print_tty() { 844 ttyLocker ttyl; 845 print(tty); 846 } 847 848 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { 849 850 _current_method[0] = '\0'; 851 _compile_type = CompileBroker::no_compile; 852 853 if (UsePerfData) { 854 ResourceMark rm; 855 856 // create the thread instance name space string - don't create an 857 // instance subspace if instance is -1 - keeps the adapterThread 858 // counters from having a ".0" namespace. 859 const char* thread_i = (instance == -1) ? thread_name : 860 PerfDataManager::name_space(thread_name, instance); 861 862 863 char* name = PerfDataManager::counter_name(thread_i, "method"); 864 _perf_current_method = 865 PerfDataManager::create_string_variable(SUN_CI, name, 866 cmname_buffer_length, 867 _current_method, CHECK); 868 869 name = PerfDataManager::counter_name(thread_i, "type"); 870 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, 871 PerfData::U_None, 872 (jlong)_compile_type, 873 CHECK); 874 875 name = PerfDataManager::counter_name(thread_i, "time"); 876 _perf_time = PerfDataManager::create_counter(SUN_CI, name, 877 PerfData::U_Ticks, CHECK); 878 879 name = PerfDataManager::counter_name(thread_i, "compiles"); 880 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, 881 PerfData::U_Events, CHECK); 882 } 883 } 884 885 // ------------------------------------------------------------------ 886 // CompileBroker::compilation_init 887 // 888 // Initialize the Compilation object 889 void CompileBroker::compilation_init() { 890 _last_method_compiled[0] = '\0'; 891 892 // No need to initialize compilation system if we do not use it. 893 if (!UseCompiler) { 894 return; 895 } 896 #ifndef SHARK 897 // Set the interface to the current compiler(s). 898 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); 899 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); 900 901 #if INCLUDE_JVMCI 902 if (EnableJVMCI) { 903 // This is creating a JVMCICompiler singleton. 904 JVMCICompiler* jvmci = new JVMCICompiler(); 905 906 if (UseJVMCICompiler) { 907 _compilers[1] = jvmci; 908 if (FLAG_IS_DEFAULT(JVMCIThreads)) { 909 if (BootstrapJVMCI) { 910 // JVMCI will bootstrap so give it more threads 911 c2_count = MIN2(32, os::active_processor_count()); 912 } 913 } else { 914 c2_count = JVMCIThreads; 915 } 916 if (FLAG_IS_DEFAULT(JVMCIHostThreads)) { 917 } else { 918 c1_count = JVMCIHostThreads; 919 } 920 } 921 } 922 #endif 923 924 #ifdef COMPILER1 925 if (c1_count > 0) { 926 _compilers[0] = new Compiler(); 927 } 928 #endif // COMPILER1 929 930 #ifdef COMPILER2 931 if (true JVMCI_ONLY( && !UseJVMCICompiler)) { 932 if (c2_count > 0) { 933 _compilers[1] = new C2Compiler(); 934 } 935 } 936 #endif // COMPILER2 937 938 #else // SHARK 939 int c1_count = 0; 940 int c2_count = 1; 941 942 _compilers[1] = new SharkCompiler(); 943 #endif // SHARK 944 945 // Start the compiler thread(s) and the sweeper thread 946 init_compiler_sweeper_threads(c1_count, c2_count); 947 // totalTime performance counter is always created as it is required 948 // by the implementation of java.lang.management.CompilationMBean. 949 { 950 EXCEPTION_MARK; 951 _perf_total_compilation = 952 PerfDataManager::create_counter(JAVA_CI, "totalTime", 953 PerfData::U_Ticks, CHECK); 954 } 955 956 957 if (UsePerfData) { 958 959 EXCEPTION_MARK; 960 961 // create the jvmstat performance counters 962 _perf_osr_compilation = 963 PerfDataManager::create_counter(SUN_CI, "osrTime", 964 PerfData::U_Ticks, CHECK); 965 966 _perf_standard_compilation = 967 PerfDataManager::create_counter(SUN_CI, "standardTime", 968 PerfData::U_Ticks, CHECK); 969 970 _perf_total_bailout_count = 971 PerfDataManager::create_counter(SUN_CI, "totalBailouts", 972 PerfData::U_Events, CHECK); 973 974 _perf_total_invalidated_count = 975 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", 976 PerfData::U_Events, CHECK); 977 978 _perf_total_compile_count = 979 PerfDataManager::create_counter(SUN_CI, "totalCompiles", 980 PerfData::U_Events, CHECK); 981 _perf_total_osr_compile_count = 982 PerfDataManager::create_counter(SUN_CI, "osrCompiles", 983 PerfData::U_Events, CHECK); 984 985 _perf_total_standard_compile_count = 986 PerfDataManager::create_counter(SUN_CI, "standardCompiles", 987 PerfData::U_Events, CHECK); 988 989 _perf_sum_osr_bytes_compiled = 990 PerfDataManager::create_counter(SUN_CI, "osrBytes", 991 PerfData::U_Bytes, CHECK); 992 993 _perf_sum_standard_bytes_compiled = 994 PerfDataManager::create_counter(SUN_CI, "standardBytes", 995 PerfData::U_Bytes, CHECK); 996 997 _perf_sum_nmethod_size = 998 PerfDataManager::create_counter(SUN_CI, "nmethodSize", 999 PerfData::U_Bytes, CHECK); 1000 1001 _perf_sum_nmethod_code_size = 1002 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", 1003 PerfData::U_Bytes, CHECK); 1004 1005 _perf_last_method = 1006 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", 1007 CompilerCounters::cmname_buffer_length, 1008 "", CHECK); 1009 1010 _perf_last_failed_method = 1011 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", 1012 CompilerCounters::cmname_buffer_length, 1013 "", CHECK); 1014 1015 _perf_last_invalidated_method = 1016 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", 1017 CompilerCounters::cmname_buffer_length, 1018 "", CHECK); 1019 1020 _perf_last_compile_type = 1021 PerfDataManager::create_variable(SUN_CI, "lastType", 1022 PerfData::U_None, 1023 (jlong)CompileBroker::no_compile, 1024 CHECK); 1025 1026 _perf_last_compile_size = 1027 PerfDataManager::create_variable(SUN_CI, "lastSize", 1028 PerfData::U_Bytes, 1029 (jlong)CompileBroker::no_compile, 1030 CHECK); 1031 1032 1033 _perf_last_failed_type = 1034 PerfDataManager::create_variable(SUN_CI, "lastFailedType", 1035 PerfData::U_None, 1036 (jlong)CompileBroker::no_compile, 1037 CHECK); 1038 1039 _perf_last_invalidated_type = 1040 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", 1041 PerfData::U_None, 1042 (jlong)CompileBroker::no_compile, 1043 CHECK); 1044 } 1045 1046 _initialized = true; 1047 } 1048 1049 1050 JavaThread* CompileBroker::make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, 1051 AbstractCompiler* comp, bool compiler_thread, TRAPS) { 1052 JavaThread* thread = NULL; 1053 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK_0); 1054 instanceKlassHandle klass (THREAD, k); 1055 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); 1056 Handle string = java_lang_String::create_from_str(name, CHECK_0); 1057 1058 // Initialize thread_oop to put it into the system threadGroup 1059 Handle thread_group (THREAD, Universe::system_thread_group()); 1060 JavaValue result(T_VOID); 1061 JavaCalls::call_special(&result, thread_oop, 1062 klass, 1063 vmSymbols::object_initializer_name(), 1064 vmSymbols::threadgroup_string_void_signature(), 1065 thread_group, 1066 string, 1067 CHECK_0); 1068 1069 { 1070 MutexLocker mu(Threads_lock, THREAD); 1071 if (compiler_thread) { 1072 thread = new CompilerThread(queue, counters); 1073 } else { 1074 thread = new CodeCacheSweeperThread(); 1075 } 1076 // At this point the new CompilerThread data-races with this startup 1077 // thread (which I believe is the primoridal thread and NOT the VM 1078 // thread). This means Java bytecodes being executed at startup can 1079 // queue compile jobs which will run at whatever default priority the 1080 // newly created CompilerThread runs at. 1081 1082 1083 // At this point it may be possible that no osthread was created for the 1084 // JavaThread due to lack of memory. We would have to throw an exception 1085 // in that case. However, since this must work and we do not allow 1086 // exceptions anyway, check and abort if this fails. 1087 1088 if (thread == NULL || thread->osthread() == NULL) { 1089 vm_exit_during_initialization("java.lang.OutOfMemoryError", 1090 os::native_thread_creation_failed_msg()); 1091 } 1092 1093 java_lang_Thread::set_thread(thread_oop(), thread); 1094 1095 // Note that this only sets the JavaThread _priority field, which by 1096 // definition is limited to Java priorities and not OS priorities. 1097 // The os-priority is set in the CompilerThread startup code itself 1098 1099 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); 1100 1101 // Note that we cannot call os::set_priority because it expects Java 1102 // priorities and we are explicitly using OS priorities so that it's 1103 // possible to set the compiler thread priority higher than any Java 1104 // thread. 1105 1106 int native_prio = CompilerThreadPriority; 1107 if (native_prio == -1) { 1108 if (UseCriticalCompilerThreadPriority) { 1109 native_prio = os::java_to_os_priority[CriticalPriority]; 1110 } else { 1111 native_prio = os::java_to_os_priority[NearMaxPriority]; 1112 } 1113 } 1114 os::set_native_priority(thread, native_prio); 1115 1116 java_lang_Thread::set_daemon(thread_oop()); 1117 1118 thread->set_threadObj(thread_oop()); 1119 if (compiler_thread) { 1120 thread->as_CompilerThread()->set_compiler(comp); 1121 } 1122 Threads::add(thread); 1123 Thread::start(thread); 1124 } 1125 1126 // Let go of Threads_lock before yielding 1127 os::naked_yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) 1128 1129 return thread; 1130 } 1131 1132 1133 void CompileBroker::init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count) { 1134 EXCEPTION_MARK; 1135 #if !defined(ZERO) && !defined(SHARK) 1136 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); 1137 #endif // !ZERO && !SHARK 1138 // Initialize the compilation queue 1139 if (c2_compiler_count > 0) { 1140 _c2_compile_queue = new CompileQueue("C2 compile queue"); 1141 _compilers[1]->set_num_compiler_threads(c2_compiler_count); 1142 } 1143 if (c1_compiler_count > 0) { 1144 _c1_compile_queue = new CompileQueue("C1 compile queue"); 1145 _compilers[0]->set_num_compiler_threads(c1_compiler_count); 1146 } 1147 1148 int compiler_count = c1_compiler_count + c2_compiler_count; 1149 1150 char name_buffer[256]; 1151 const bool compiler_thread = true; 1152 for (int i = 0; i < c2_compiler_count; i++) { 1153 // Create a name for our thread. 1154 sprintf(name_buffer, "%s CompilerThread%d", _compilers[1]->name(), i); 1155 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); 1156 // Shark and C2 1157 make_thread(name_buffer, _c2_compile_queue, counters, _compilers[1], compiler_thread, CHECK); 1158 } 1159 1160 for (int i = c2_compiler_count; i < compiler_count; i++) { 1161 // Create a name for our thread. 1162 sprintf(name_buffer, "C1 CompilerThread%d", i); 1163 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); 1164 // C1 1165 make_thread(name_buffer, _c1_compile_queue, counters, _compilers[0], compiler_thread, CHECK); 1166 } 1167 1168 if (UsePerfData) { 1169 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); 1170 } 1171 1172 if (MethodFlushing) { 1173 // Initialize the sweeper thread 1174 make_thread("Sweeper thread", NULL, NULL, NULL, false, CHECK); 1175 } 1176 } 1177 1178 1179 /** 1180 * Set the methods on the stack as on_stack so that redefine classes doesn't 1181 * reclaim them. This method is executed at a safepoint. 1182 / 1183 void CompileBroker::mark_on_stack() { 1184 assert(SafepointSynchronize::is_at_safepoint(), "sanity check"); 1185 // Since we are at a safepoint, we do not need a lock to access 1186 // the compile queues. 1187 if (_c2_compile_queue != NULL) { 1188 _c2_compile_queue->mark_on_stack(); 1189 } 1190 if (_c1_compile_queue != NULL) { 1191 _c1_compile_queue->mark_on_stack(); 1192 } 1193 } 1194 1195 // ------------------------------------------------------------------ 1196 // CompileBroker::compile_method 1197 // 1198 // Request compilation of a method. 1199 void CompileBroker::compile_method_base(methodHandle method, 1200 int osr_bci, 1201 int comp_level, 1202 methodHandle hot_method, 1203 int hot_count, 1204 const char comment, 1205 Thread* thread) { 1206 // do nothing if compiler thread(s) is not available 1207 if (!_initialized) { 1208 return; 1209 } 1210 1211 guarantee(!method->is_abstract(), "cannot compile abstract methods"); 1212 assert(method->method_holder()->oop_is_instance(), 1213 "sanity check"); 1214 assert(!method->method_holder()->is_not_initialized(), 1215 "method holder must be initialized"); 1216 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); 1217 1218 if (CIPrintRequests) { 1219 tty->print("request: "); 1220 method->print_short_name(tty); 1221 if (osr_bci != InvocationEntryBci) { 1222 tty->print(" osr_bci: %d", osr_bci); 1223 } 1224 tty->print(" level: %d comment: %s count: %d", comp_level, comment, hot_count); 1225 if (!hot_method.is_null()) { 1226 tty->print(" hot: "); 1227 if (hot_method() != method()) { 1228 hot_method->print_short_name(tty); 1229 } else { 1230 tty->print("yes"); 1231 } 1232 } 1233 tty->cr(); 1234 } 1235 1236 // A request has been made for compilation. Before we do any 1237 // real work, check to see if the method has been compiled 1238 // in the meantime with a definitive result. 1239 if (compilation_is_complete(method, osr_bci, comp_level)) { 1240 return; 1241 } 1242 1243 #ifndef PRODUCT 1244 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { 1245 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { 1246 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. 1247 return; 1248 } 1249 } 1250 #endif 1251 1252 // If this method is already in the compile queue, then 1253 // we do not block the current thread. 1254 if (compilation_is_in_queue(method)) { 1255 // We may want to decay our counter a bit here to prevent 1256 // multiple denied requests for compilation. This is an 1257 // open compilation policy issue. Note: The other possibility, 1258 // in the case that this is a blocking compile request, is to have 1259 // all subsequent blocking requesters wait for completion of 1260 // ongoing compiles. Note that in this case we'll need a protocol 1261 // for freeing the associated compile tasks. [Or we could have 1262 // a single static monitor on which all these waiters sleep.] 1263 return; 1264 } 1265 1266 // If the requesting thread is holding the pending list lock 1267 // then we just return. We can't risk blocking while holding 1268 // the pending list lock or a 3-way deadlock may occur 1269 // between the reference handler thread, a GC (instigated 1270 // by a compiler thread), and compiled method registration. 1271 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { 1272 return; 1273 } 1274 1275 if (TieredCompilation) { 1276 // Tiered policy requires MethodCounters to exist before adding a method to 1277 // the queue. Create if we don't have them yet. 1278 method->get_method_counters(thread); 1279 } 1280 1281 // Outputs from the following MutexLocker block: 1282 CompileTask* task = NULL; 1283 bool blocking = false; 1284 CompileQueue* queue = compile_queue(comp_level); 1285 1286 // Acquire our lock. 1287 { 1288 MutexLocker locker(MethodCompileQueue_lock, thread); 1289 1290 // Make sure the method has not slipped into the queues since 1291 // last we checked; note that those checks were "fast bail-outs". 1292 // Here we need to be more careful, see 14012000 below. 1293 if (compilation_is_in_queue(method)) { 1294 return; 1295 } 1296 1297 // We need to check again to see if the compilation has 1298 // completed. A previous compilation may have registered 1299 // some result. 1300 if (compilation_is_complete(method, osr_bci, comp_level)) { 1301 return; 1302 } 1303 1304 // We now know that this compilation is not pending, complete, 1305 // or prohibited. Assign a compile_id to this compilation 1306 // and check to see if it is in our [Start..Stop) range. 1307 int compile_id = assign_compile_id(method, osr_bci); 1308 if (compile_id == 0) { 1309 // The compilation falls outside the allowed range. 1310 return; 1311 } 1312 1313 // Should this thread wait for completion of the compile? 1314 blocking = is_compile_blocking(); 1315 1316 #if INCLUDE_JVMCI 1317 if (UseJVMCICompiler) { 1318 if (blocking) { 1319 // Don't allow blocking compiles for requests triggered by JVMCI. 1320 if (thread->is_Compiler_thread()) { 1321 blocking = false; 1322 } 1323 1324 // Don't allow blocking compiles if inside a class initializer or while performing class loading 1325 vframeStream vfst((JavaThread*) thread); 1326 for (; !vfst.at_end(); vfst.next()) { 1327 if (vfst.method()->is_static_initializer() || 1328 (vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass()) && 1329 vfst.method()->name() == vmSymbols::loadClass_name())) { 1330 blocking = false; 1331 break; 1332 } 1333 } 1334 1335 // Don't allow blocking compilation requests to JVMCI 1336 // if JVMCI itself is not yet initialized 1337 if (!JVMCIRuntime::is_HotSpotJVMCIRuntime_initialized() && compiler(comp_level)->is_jvmci()) { 1338 blocking = false; 1339 } 1340 1341 // Don't allow blocking compilation requests if we are in JVMCIRuntime::shutdown 1342 // to avoid deadlock between compiler thread(s) and threads run at shutdown 1343 // such as the DestroyJavaVM thread. 1344 if (JVMCIRuntime::shutdown_called()) { 1345 blocking = false; 1346 } 1347 } 1348 } 1349 #endif 1350 1351 // We will enter the compilation in the queue. 1352 // 14012000: Note that this sets the queued_for_compile bits in 1353 // the target method. We can now reason that a method cannot be 1354 // queued for compilation more than once, as follows: 1355 // Before a thread queues a task for compilation, it first acquires 1356 // the compile queue lock, then checks if the method's queued bits 1357 // are set or it has already been compiled. Thus there can not be two 1358 // instances of a compilation task for the same method on the 1359 // compilation queue. Consider now the case where the compilation 1360 // thread has already removed a task for that method from the queue 1361 // and is in the midst of compiling it. In this case, the 1362 // queued_for_compile bits must be set in the method (and these 1363 // will be visible to the current thread, since the bits were set 1364 // under protection of the compile queue lock, which we hold now. 1365 // When the compilation completes, the compiler thread first sets 1366 // the compilation result and then clears the queued_for_compile 1367 // bits. Neither of these actions are protected by a barrier (or done 1368 // under the protection of a lock), so the only guarantee we have 1369 // (on machines with TSO (Total Store Order)) is that these values 1370 // will update in that order. As a result, the only combinations of 1371 // these bits that the current thread will see are, in temporal order: 1372 // <RESULT, QUEUE> : 1373 // <0, 1> : in compile queue, but not yet compiled 1374 // <1, 1> : compiled but queue bit not cleared 1375 // <1, 0> : compiled and queue bit cleared 1376 // Because we first check the queue bits then check the result bits, 1377 // we are assured that we cannot introduce a duplicate task. 1378 // Note that if we did the tests in the reverse order (i.e. check 1379 // result then check queued bit), we could get the result bit before 1380 // the compilation completed, and the queue bit after the compilation 1381 // completed, and end up introducing a "duplicate" (redundant) task. 1382 // In that case, the compiler thread should first check if a method 1383 // has already been compiled before trying to compile it. 1384 // NOTE: in the event that there are multiple compiler threads and 1385 // there is de-optimization/recompilation, things will get hairy, 1386 // and in that case it's best to protect both the testing (here) of 1387 // these bits, and their updating (here and elsewhere) under a 1388 // common lock. 1389 task = create_compile_task(queue, 1390 compile_id, method, 1391 osr_bci, comp_level, 1392 hot_method, hot_count, comment, 1393 blocking); 1394 } 1395 1396 if (blocking) { 1397 wait_for_completion(task); 1398 } 1399 } 1400 1401 1402 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, 1403 int comp_level, 1404 methodHandle hot_method, int hot_count, 1405 const char* comment, Thread* THREAD) { 1406 // make sure arguments make sense 1407 assert(method->method_holder()->oop_is_instance(), "not an instance method"); 1408 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); 1409 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); 1410 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); 1411 // allow any levels for WhiteBox 1412 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); 1413 // return quickly if possible 1414 1415 // lock, make sure that the compilation 1416 // isn't prohibited in a straightforward way. 1417 AbstractCompiler comp = CompileBroker::compiler(comp_level); 1418 if (comp == NULL || !comp->can_compile_method(method) || 1419 compilation_is_prohibited(method, osr_bci, comp_level)) { 1420 return NULL; 1421 } 1422 1423 if (osr_bci == InvocationEntryBci) { 1424 // standard compilation 1425 nmethod method_code = method->code(); 1426 if (method_code != NULL) { 1427 if (compilation_is_complete(method, osr_bci, comp_level)) { 1428 return method_code; 1429 } 1430 } 1431 if (method->is_not_compilable(comp_level)) { 1432 return NULL; 1433 } 1434 } else { 1435 // osr compilation 1436 #ifndef TIERED 1437 // seems like an assert of dubious value 1438 assert(comp_level == CompLevel_highest_tier, 1439 "all OSR compiles are assumed to be at a single compilation lavel"); 1440 #endif // TIERED 1441 // We accept a higher level osr method 1442 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); 1443 if (nm != NULL) return nm; 1444 if (method->is_not_osr_compilable(comp_level)) return NULL; 1445 } 1446 1447 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); 1448 // some prerequisites that are compiler specific 1449 if (comp->is_c2() || comp->is_shark()) { 1450 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); 1451 // Resolve all classes seen in the signature of the method 1452 // we are compiling. 1453 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); 1454 } 1455 1456 // If the method is native, do the lookup in the thread requesting 1457 // the compilation. Native lookups can load code, which is not 1458 // permitted during compilation. 1459 // 1460 // Note: A native method implies non-osr compilation which is 1461 // checked with an assertion at the entry of this method. 1462 if (method->is_native() && !method->is_method_handle_intrinsic()) { 1463 bool in_base_library; 1464 address adr = NativeLookup::lookup(method, in_base_library, THREAD); 1465 if (HAS_PENDING_EXCEPTION) { 1466 // In case of an exception looking up the method, we just forget 1467 // about it. The interpreter will kick-in and throw the exception. 1468 method->set_not_compilable(); // implies is_not_osr_compilable() 1469 CLEAR_PENDING_EXCEPTION; 1470 return NULL; 1471 } 1472 assert(method->has_native_function(), "must have native code by now"); 1473 } 1474 1475 // RedefineClasses() has replaced this method; just return 1476 if (method->is_old()) { 1477 return NULL; 1478 } 1479 1480 // JVMTI -- post_compile_event requires jmethod_id() that may require 1481 // a lock the compiling thread can not acquire. Prefetch it here. 1482 if (JvmtiExport::should_post_compiled_method_load()) { 1483 method->jmethod_id(); 1484 } 1485 1486 // do the compilation 1487 if (method->is_native()) { 1488 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { 1489 // The following native methods: 1490 // 1491 // java.lang.Float.intBitsToFloat 1492 // java.lang.Float.floatToRawIntBits 1493 // java.lang.Double.longBitsToDouble 1494 // java.lang.Double.doubleToRawLongBits 1495 // 1496 // are called through the interpreter even if interpreter native stubs 1497 // are not preferred (i.e., calling through adapter handlers is preferred). 1498 // The reason is that on x86_32 signaling NaNs (sNaNs) are not preserved 1499 // if the version of the methods from the native libraries is called. 1500 // As the interpreter and the C2-intrinsified version of the methods preserves 1501 // sNaNs, that would result in an inconsistent way of handling of sNaNs. 1502 if ((UseSSE >= 1 && 1503 (method->intrinsic_id() == vmIntrinsics::_intBitsToFloat || 1504 method->intrinsic_id() == vmIntrinsics::_floatToRawIntBits)) || 1505 (UseSSE >= 2 && 1506 (method->intrinsic_id() == vmIntrinsics::_longBitsToDouble || 1507 method->intrinsic_id() == vmIntrinsics::_doubleToRawLongBits))) { 1508 return NULL; 1509 } 1510 1511 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that 1512 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime). 1513 // 1514 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter 1515 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls. 1516 AdapterHandlerLibrary::create_native_wrapper(method); 1517 } else { 1518 return NULL; 1519 } 1520 } else { 1521 // If the compiler is shut off due to code cache getting full 1522 // fail out now so blocking compiles dont hang the java thread 1523 if (!should_compile_new_jobs()) { 1524 CompilationPolicy::policy()->delay_compilation(method()); 1525 return NULL; 1526 } 1527 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); 1528 } 1529 1530 // return requested nmethod 1531 // We accept a higher level osr method 1532 if (osr_bci == InvocationEntryBci) { 1533 return method->code(); 1534 } 1535 return method->lookup_osr_nmethod_for(osr_bci, comp_level, false); 1536 } 1537 1538 1539 // ------------------------------------------------------------------ 1540 // CompileBroker::compilation_is_complete 1541 // 1542 // See if compilation of this method is already complete. 1543 bool CompileBroker::compilation_is_complete(methodHandle method, 1544 int osr_bci, 1545 int comp_level) { 1546 bool is_osr = (osr_bci != standard_entry_bci); 1547 if (is_osr) { 1548 if (method->is_not_osr_compilable(comp_level)) { 1549 return true; 1550 } else { 1551 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); 1552 return (result != NULL); 1553 } 1554 } else { 1555 if (method->is_not_compilable(comp_level)) { 1556 return true; 1557 } else { 1558 nmethod* result = method->code(); 1559 if (result == NULL) return false; 1560 return comp_level == result->comp_level(); 1561 } 1562 } 1563 } 1564 1565 1566 /** 1567 * See if this compilation is already requested. 1568 * 1569 * Implementation note: there is only a single "is in queue" bit 1570 * for each method. This means that the check below is overly 1571 * conservative in the sense that an osr compilation in the queue 1572 * will block a normal compilation from entering the queue (and vice 1573 * versa). This can be remedied by a full queue search to disambiguate 1574 * cases. If it is deemed profitable, this may be done. 1575 / 1576 bool CompileBroker::compilation_is_in_queue(methodHandle method) { 1577 return method->queued_for_compilation(); 1578 } 1579 1580 // ------------------------------------------------------------------ 1581 // CompileBroker::compilation_is_prohibited 1582 // 1583 // See if this compilation is not allowed. 1584 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { 1585 bool is_native = method->is_native(); 1586 // Some compilers may not support the compilation of natives. 1587 AbstractCompiler comp = compiler(comp_level); 1588 if (is_native && 1589 (!CICompileNatives || comp == NULL || !comp->supports_native())) { 1590 method->set_not_compilable_quietly(comp_level); 1591 return true; 1592 } 1593 1594 bool is_osr = (osr_bci != standard_entry_bci); 1595 // Some compilers may not support on stack replacement. 1596 if (is_osr && 1597 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { 1598 method->set_not_osr_compilable(comp_level); 1599 return true; 1600 } 1601 1602 // The method may be explicitly excluded by the user. 1603 bool quietly; 1604 double scale; 1605 if (CompilerOracle::should_exclude(method, quietly) 1606 || (CompilerOracle::has_option_value(method, "CompileThresholdScaling", scale) && scale == 0)) { 1607 if (!quietly) { 1608 // This does not happen quietly... 1609 ResourceMark rm; 1610 tty->print("### Excluding %s:%s", 1611 method->is_native() ? "generation of native wrapper" : "compile", 1612 (method->is_static() ? " static" : "")); 1613 method->print_short_name(tty); 1614 tty->cr(); 1615 } 1616 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); 1617 } 1618 1619 return false; 1620 } 1621 1622 / 1623 * Generate serialized IDs for compilation requests. If certain debugging flags are used 1624 * and the ID is not within the specified range, the method is not compiled and 0 is returned. 1625 * The function also allows to generate separate compilation IDs for OSR compilations. 1626 / 1627 int CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { 1628 #ifdef ASSERT 1629 bool is_osr = (osr_bci != standard_entry_bci); 1630 int id; 1631 if (method->is_native()) { 1632 assert(!is_osr, "can't be osr"); 1633 // Adapters, native wrappers and method handle intrinsics 1634 // should be generated always. 1635 return Atomic::add(1, &_compilation_id); 1636 } else if (CICountOSR && is_osr) { 1637 id = Atomic::add(1, &_osr_compilation_id); 1638 if (CIStartOSR <= id && id < CIStopOSR) { 1639 return id; 1640 } 1641 } else { 1642 id = Atomic::add(1, &_compilation_id); 1643 if (CIStart <= id && id < CIStop) { 1644 return id; 1645 } 1646 } 1647 1648 // Method was not in the appropriate compilation range. 1649 method->set_not_compilable_quietly(); 1650 return 0; 1651 #else 1652 // CICountOSR is a develop flag and set to 'false' by default. In a product built, 1653 // only _compilation_id is incremented. 1654 return Atomic::add(1, &_compilation_id); 1655 #endif 1656 } 1657 1658 // ------------------------------------------------------------------ 1659 // CompileBroker::assign_compile_id_unlocked 1660 // 1661 // Public wrapper for assign_compile_id that acquires the needed locks 1662 uint CompileBroker::assign_compile_id_unlocked(Thread thread, methodHandle method, int osr_bci) { 1663 MutexLocker locker(MethodCompileQueue_lock, thread); 1664 return assign_compile_id(method, osr_bci); 1665 } 1666 1667 /** 1668 * Should the current thread block until this compilation request 1669 * has been fulfilled? 1670 / 1671 bool CompileBroker::is_compile_blocking() { 1672 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); 1673 return !BackgroundCompilation; 1674 } 1675 1676 1677 // ------------------------------------------------------------------ 1678 // CompileBroker::preload_classes 1679 void CompileBroker::preload_classes(methodHandle method, TRAPS) { 1680 // Move this code over from c1_Compiler.cpp 1681 ShouldNotReachHere(); 1682 } 1683 1684 1685 // ------------------------------------------------------------------ 1686 // CompileBroker::create_compile_task 1687 // 1688 // Create a CompileTask object representing the current request for 1689 // compilation. Add this task to the queue. 1690 CompileTask CompileBroker::create_compile_task(CompileQueue* queue, 1691 int compile_id, 1692 methodHandle method, 1693 int osr_bci, 1694 int comp_level, 1695 methodHandle hot_method, 1696 int hot_count, 1697 const char* comment, 1698 bool blocking) { 1699 CompileTask* new_task = CompileTask::allocate(); 1700 new_task->initialize(compile_id, method, osr_bci, comp_level, 1701 hot_method, hot_count, comment, 1702 blocking); 1703 queue->add(new_task); 1704 return new_task; 1705 } 1706 1707 1708 /** 1709 * Wait for the compilation task to complete. 1710 / 1711 void CompileBroker::wait_for_completion(CompileTask task) { 1712 if (CIPrintCompileQueue) { 1713 ttyLocker ttyl; 1714 tty->print_cr("BLOCKING FOR COMPILE"); 1715 } 1716 1717 assert(task->is_blocking(), "can only wait on blocking task"); 1718 1719 JavaThread* thread = JavaThread::current(); 1720 thread->set_blocked_on_compilation(true); 1721 1722 methodHandle method(thread, task->method()); 1723 { 1724 MutexLocker waiter(task->lock(), thread); 1725 1726 while (!task->is_complete() && !is_compilation_disabled_forever()) { 1727 task->lock()->wait(); 1728 } 1729 } 1730 1731 thread->set_blocked_on_compilation(false); 1732 if (is_compilation_disabled_forever()) { 1733 CompileTask::free(task); 1734 return; 1735 } 1736 1737 // It is harmless to check this status without the lock, because 1738 // completion is a stable property (until the task object is recycled). 1739 assert(task->is_complete(), "Compilation should have completed"); 1740 assert(task->code_handle() == NULL, "must be reset"); 1741 1742 // By convention, the waiter is responsible for recycling a 1743 // blocking CompileTask. Since there is only one waiter ever 1744 // waiting on a CompileTask, we know that no one else will 1745 // be using this CompileTask; we can free it. 1746 CompileTask::free(task); 1747 } 1748 1749 /** 1750 * Initialize compiler thread(s) + compiler object(s). The postcondition 1751 * of this function is that the compiler runtimes are initialized and that 1752 * compiler threads can start compiling. 1753 / 1754 bool CompileBroker::init_compiler_runtime() { 1755 CompilerThread thread = CompilerThread::current(); 1756 AbstractCompiler* comp = thread->compiler(); 1757 // Final sanity check - the compiler object must exist 1758 guarantee(comp != NULL, "Compiler object must exist"); 1759 1760 int system_dictionary_modification_counter; 1761 { 1762 MutexLocker locker(Compile_lock, thread); 1763 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); 1764 } 1765 1766 { 1767 // Must switch to native to allocate ci_env 1768 ThreadToNativeFromVM ttn(thread); 1769 ciEnv ci_env(NULL, system_dictionary_modification_counter); 1770 // Cache Jvmti state 1771 ci_env.cache_jvmti_state(); 1772 // Cache DTrace flags 1773 ci_env.cache_dtrace_flags(); 1774 1775 // Switch back to VM state to do compiler initialization 1776 ThreadInVMfromNative tv(thread); 1777 ResetNoHandleMark rnhm; 1778 1779 1780 if (!comp->is_shark()) { 1781 // Perform per-thread and global initializations 1782 comp->initialize(); 1783 } 1784 } 1785 1786 if (comp->is_failed()) { 1787 disable_compilation_forever(); 1788 // If compiler initialization failed, no compiler thread that is specific to a 1789 // particular compiler runtime will ever start to compile methods. 1790 shutdown_compiler_runtime(comp, thread); 1791 return false; 1792 } 1793 1794 // C1 specific check 1795 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { 1796 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); 1797 return false; 1798 } 1799 1800 return true; 1801 } 1802 1803 /** 1804 * If C1 and/or C2 initialization failed, we shut down all compilation. 1805 * We do this to keep things simple. This can be changed if it ever turns 1806 * out to be a problem. 1807 / 1808 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler comp, CompilerThread* thread) { 1809 // Free buffer blob, if allocated 1810 if (thread->get_buffer_blob() != NULL) { 1811 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1812 CodeCache::free(thread->get_buffer_blob()); 1813 } 1814 1815 if (comp->should_perform_shutdown()) { 1816 // There are two reasons for shutting down the compiler 1817 // 1) compiler runtime initialization failed 1818 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing 1819 warning("%s initialization failed. Shutting down all compilers", comp->name()); 1820 1821 // Only one thread per compiler runtime object enters here 1822 // Set state to shut down 1823 comp->set_shut_down(); 1824 1825 // Delete all queued compilation tasks to make compiler threads exit faster. 1826 if (_c1_compile_queue != NULL) { 1827 _c1_compile_queue->free_all(); 1828 } 1829 1830 if (_c2_compile_queue != NULL) { 1831 _c2_compile_queue->free_all(); 1832 } 1833 1834 // Set flags so that we continue execution with using interpreter only. 1835 UseCompiler = false; 1836 UseInterpreter = true; 1837 1838 // We could delete compiler runtimes also. However, there are references to 1839 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then 1840 // fail. This can be done later if necessary. 1841 } 1842 } 1843 1844 // ------------------------------------------------------------------ 1845 // CompileBroker::compiler_thread_loop 1846 // 1847 // The main loop run by a CompilerThread. 1848 void CompileBroker::compiler_thread_loop() { 1849 CompilerThread* thread = CompilerThread::current(); 1850 CompileQueue* queue = thread->queue(); 1851 // For the thread that initializes the ciObjectFactory 1852 // this resource mark holds all the shared objects 1853 ResourceMark rm; 1854 1855 // First thread to get here will initialize the compiler interface 1856 1857 if (!ciObjectFactory::is_initialized()) { 1858 ASSERT_IN_VM; 1859 MutexLocker only_one (CompileThread_lock, thread); 1860 if (!ciObjectFactory::is_initialized()) { 1861 ciObjectFactory::initialize(); 1862 } 1863 } 1864 1865 // Open a log. 1866 if (LogCompilation) { 1867 init_compiler_thread_log(); 1868 } 1869 CompileLog* log = thread->log(); 1870 if (log != NULL) { 1871 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", 1872 thread->name(), 1873 os::current_thread_id(), 1874 os::current_process_id()); 1875 log->stamp(); 1876 log->end_elem(); 1877 } 1878 1879 // If compiler thread/runtime initialization fails, exit the compiler thread 1880 if (!init_compiler_runtime()) { 1881 return; 1882 } 1883 1884 // Poll for new compilation tasks as long as the JVM runs. Compilation 1885 // should only be disabled if something went wrong while initializing the 1886 // compiler runtimes. This, in turn, should not happen. The only known case 1887 // when compiler runtime initialization fails is if there is not enough free 1888 // space in the code cache to generate the necessary stubs, etc. 1889 while (!is_compilation_disabled_forever()) { 1890 // We need this HandleMark to avoid leaking VM handles. 1891 HandleMark hm(thread); 1892 1893 CompileTask* task = queue->get(); 1894 if (task == NULL) { 1895 continue; 1896 } 1897 1898 // Give compiler threads an extra quanta. They tend to be bursty and 1899 // this helps the compiler to finish up the job. 1900 if (CompilerThreadHintNoPreempt) { 1901 os::hint_no_preempt(); 1902 } 1903 1904 // trace per thread time and compile statistics 1905 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); 1906 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); 1907 1908 // Assign the task to the current thread. Mark this compilation 1909 // thread as active for the profiler. 1910 CompileTaskWrapper ctw(task); 1911 nmethodLocker result_handle; // (handle for the nmethod produced by this task) 1912 task->set_code_handle(&result_handle); 1913 methodHandle method(thread, task->method()); 1914 1915 // Never compile a method if breakpoints are present in it 1916 if (method()->number_of_breakpoints() == 0) { 1917 // Compile the method. 1918 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { 1919 invoke_compiler_on_method(task); 1920 } else { 1921 // After compilation is disabled, remove remaining methods from queue 1922 method->clear_queued_for_compilation(); 1923 task->set_failure_reason("compilation is disabled"); 1924 } 1925 } 1926 } 1927 1928 // Shut down compiler runtime 1929 shutdown_compiler_runtime(thread->compiler(), thread); 1930 } 1931 1932 // ------------------------------------------------------------------ 1933 // CompileBroker::init_compiler_thread_log 1934 // 1935 // Set up state required by +LogCompilation. 1936 void CompileBroker::init_compiler_thread_log() { 1937 CompilerThread* thread = CompilerThread::current(); 1938 char file_name[4K]; 1939 FILE fp = NULL; 1940 intx thread_id = os::current_thread_id(); 1941 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { 1942 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); 1943 if (dir == NULL) { 1944 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", 1945 thread_id, os::current_process_id()); 1946 } else { 1947 jio_snprintf(file_name, sizeof(file_name), 1948 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, 1949 os::file_separator(), thread_id, os::current_process_id()); 1950 } 1951 1952 fp = fopen(file_name, "wt"); 1953 if (fp != NULL) { 1954 if (LogCompilation && Verbose) { 1955 tty->print_cr("Opening compilation log %s", file_name); 1956 } 1957 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); 1958 thread->init_log(log); 1959 1960 if (xtty != NULL) { 1961 ttyLocker ttyl; 1962 // Record any per thread log files 1963 xtty->elem("thread_logfile thread='" INTX_FORMAT "' filename='%s'", thread_id, file_name); 1964 } 1965 return; 1966 } 1967 } 1968 warning("Cannot open log file: %s", file_name); 1969 } 1970 1971 void CompileBroker::log_metaspace_failure() { 1972 const char* message = "some methods may not be compiled because metaspace " 1973 "is out of memory"; 1974 if (_compilation_log != NULL) { 1975 _compilation_log->log_metaspace_failure(message); 1976 } 1977 if (PrintCompilation) { 1978 tty->print_cr("COMPILE PROFILING SKIPPED: %s", message); 1979 } 1980 } 1981 1982 1983 // ------------------------------------------------------------------ 1984 // CompileBroker::set_should_block 1985 // 1986 // Set _should_block. 1987 // Call this from the VM, with Threads_lock held and a safepoint requested. 1988 void CompileBroker::set_should_block() { 1989 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); 1990 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); 1991 #ifndef PRODUCT 1992 if (PrintCompilation && (Verbose || WizardMode)) 1993 tty->print_cr("notifying compiler thread pool to block"); 1994 #endif 1995 _should_block = true; 1996 } 1997 1998 // ------------------------------------------------------------------ 1999 // CompileBroker::maybe_block 2000 // 2001 // Call this from the compiler at convenient points, to poll for _should_block. 2002 void CompileBroker::maybe_block() { 2003 if (_should_block) { 2004 #ifndef PRODUCT 2005 if (PrintCompilation && (Verbose || WizardMode)) 2006 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", p2i(Thread::current())); 2007 #endif 2008 ThreadInVMfromNative tivfn(JavaThread::current()); 2009 } 2010 } 2011 2012 // wrapper for CodeCache::print_summary() 2013 static void codecache_print(bool detailed) 2014 { 2015 ResourceMark rm; 2016 stringStream s; 2017 // Dump code cache into a buffer before locking the tty, 2018 { 2019 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 2020 CodeCache::print_summary(&s, detailed); 2021 } 2022 ttyLocker ttyl; 2023 tty->print("%s", s.as_string()); 2024 } 2025 2026 void CompileBroker::post_compile(CompilerThread* thread, CompileTask* task, EventCompilation& event, bool success, ciEnv* ci_env) { 2027 2028 if (success) { 2029 task->mark_success(); 2030 if (ci_env != NULL) { 2031 task->set_num_inlined_bytecodes(ci_env->num_inlined_bytecodes()); 2032 } 2033 if (_compilation_log != NULL) { 2034 nmethod* code = task->code(); 2035 if (code != NULL) { 2036 _compilation_log->log_nmethod(thread, code); 2037 } 2038 } 2039 } 2040 2041 // simulate crash during compilation 2042 assert(task->compile_id() != CICrashAt, "just as planned"); 2043 if (event.should_commit()) { 2044 event.set_method(task->method()); 2045 event.set_compileID(task->compile_id()); 2046 event.set_compileLevel(task->comp_level()); 2047 event.set_succeded(task->is_success()); 2048 event.set_isOsr(task->osr_bci() != CompileBroker::standard_entry_bci); 2049 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); 2050 event.set_inlinedBytes(task->num_inlined_bytecodes()); 2051 event.commit(); 2052 } 2053 } 2054 2055 // ------------------------------------------------------------------ 2056 // CompileBroker::invoke_compiler_on_method 2057 // 2058 // Compile a method. 2059 // 2060 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { 2061 if (PrintCompilation) { 2062 ResourceMark rm; 2063 task->print_tty(); 2064 } 2065 elapsedTimer time; 2066 2067 CompilerThread* thread = CompilerThread::current(); 2068 ResourceMark rm(thread); 2069 2070 if (LogEvents) { 2071 _compilation_log->log_compile(thread, task); 2072 } 2073 2074 // Common flags. 2075 uint compile_id = task->compile_id(); 2076 int osr_bci = task->osr_bci(); 2077 bool is_osr = (osr_bci != standard_entry_bci); 2078 bool should_log = (thread->log() != NULL); 2079 bool should_break = false; 2080 int task_level = task->comp_level(); 2081 { 2082 // create the handle inside it's own block so it can't 2083 // accidentally be referenced once the thread transitions to 2084 // native. The NoHandleMark before the transition should catch 2085 // any cases where this occurs in the future. 2086 methodHandle method(thread, task->method()); 2087 should_break = check_break_at(method, compile_id, is_osr); 2088 if (should_log && !CompilerOracle::should_log(method)) { 2089 should_log = false; 2090 } 2091 assert(!method->is_native(), "no longer compile natives"); 2092 2093 // Save information about this method in case of failure. 2094 set_last_compile(thread, method, is_osr, task_level); 2095 2096 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); 2097 } 2098 2099 // Allocate a new set of JNI handles. 2100 push_jni_handle_block(); 2101 Method* target_handle = task->method(); 2102 int compilable = ciEnv::MethodCompilable; 2103 AbstractCompiler comp = compiler(task_level); 2104 2105 int system_dictionary_modification_counter; 2106 { 2107 MutexLocker locker(Compile_lock, thread); 2108 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); 2109 } 2110 #if INCLUDE_JVMCI 2111 if (UseJVMCICompiler && comp != NULL && comp->is_jvmci()) { 2112 JVMCICompiler jvmci = (JVMCICompiler*) comp; 2113 2114 TraceTime t1("compilation", &time); 2115 EventCompilation event; 2116 2117 JVMCIEnv env(task, system_dictionary_modification_counter); 2118 jvmci->compile_method(target_handle, osr_bci, &env); 2119 2120 post_compile(thread, task, event, task->code() != NULL, NULL); 2121 } else 2122 #endif 2123 { 2124 2125 NoHandleMark nhm; 2126 ThreadToNativeFromVM ttn(thread); 2127 2128 ciEnv ci_env(task, system_dictionary_modification_counter); 2129 if (should_break) { 2130 ci_env.set_break_at_compile(true); 2131 } 2132 if (should_log) { 2133 ci_env.set_log(thread->log()); 2134 } 2135 assert(thread->env() == &ci_env, "set by ci_env"); 2136 // The thread-env() field is cleared in ~CompileTaskWrapper. 2137 2138 // Cache Jvmti state 2139 ci_env.cache_jvmti_state(); 2140 2141 // Cache DTrace flags 2142 ci_env.cache_dtrace_flags(); 2143 2144 ciMethod* target = ci_env.get_method_from_handle(target_handle); 2145 2146 TraceTime t1("compilation", &time); 2147 EventCompilation event; 2148 2149 if (comp == NULL) { 2150 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); 2151 } else { 2152 if (WhiteBoxAPI && WhiteBox::compilation_locked) { 2153 MonitorLockerEx locker(Compilation_lock, Mutex::_no_safepoint_check_flag); 2154 while (WhiteBox::compilation_locked) { 2155 locker.wait(Mutex::_no_safepoint_check_flag); 2156 } 2157 } 2158 comp->compile_method(&ci_env, target, osr_bci); 2159 } 2160 2161 if (!ci_env.failing() && task->code() == NULL) { 2162 //assert(false, "compiler should always document failure"); 2163 // The compiler elected, without comment, not to register a result. 2164 // Do not attempt further compilations of this method. 2165 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); 2166 } 2167 2168 // Copy this bit to the enclosing block: 2169 compilable = ci_env.compilable(); 2170 2171 if (ci_env.failing()) { 2172 task->set_failure_reason(ci_env.failure_reason()); 2173 ci_env.report_failure(ci_env.failure_reason()); 2174 const char* retry_message = ci_env.retry_message(); 2175 if (_compilation_log != NULL) { 2176 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); 2177 } 2178 if (PrintCompilation) { 2179 FormatBufferResource msg = retry_message != NULL ? 2180 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : 2181 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); 2182 task->print_compilation(tty, msg); 2183 } 2184 } 2185 2186 post_compile(thread, task, event, !ci_env.failing(), &ci_env); 2187 } 2188 pop_jni_handle_block(); 2189 2190 methodHandle method(thread, task->method()); 2191 2192 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); 2193 2194 collect_statistics(thread, time, task); 2195 2196 if (PrintCompilation && PrintCompilation2) { 2197 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp 2198 tty->print("%4d ", compile_id); // print compilation number 2199 tty->print("%s ", (is_osr ? "%" : " ")); 2200 if (task->code() != NULL) { 2201 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); 2202 } 2203 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); 2204 } 2205 2206 if (PrintCodeCacheOnCompilation) 2207 codecache_print(/* detailed= / false); 2208 2209 // Disable compilation, if required. 2210 switch (compilable) { 2211 case ciEnv::MethodCompilable_never: 2212 if (is_osr) 2213 method->set_not_osr_compilable_quietly(); 2214 else 2215 method->set_not_compilable_quietly(); 2216 break; 2217 case ciEnv::MethodCompilable_not_at_tier: 2218 if (is_osr) 2219 method->set_not_osr_compilable_quietly(task_level); 2220 else 2221 method->set_not_compilable_quietly(task_level); 2222 break; 2223 } 2224 2225 // Note that the queued_for_compilation bits are cleared without 2226 // protection of a mutex. [They were set by the requester thread, 2227 // when adding the task to the compile queue -- at which time the 2228 // compile queue lock was held. Subsequently, we acquired the compile 2229 // queue lock to get this task off the compile queue; thus (to belabour 2230 // the point somewhat) our clearing of the bits must be occurring 2231 // only after the setting of the bits. See also 14012000 above. 2232 method->clear_queued_for_compilation(); 2233 2234 #ifdef ASSERT 2235 if (CollectedHeap::fired_fake_oom()) { 2236 // The current compile received a fake OOM during compilation so 2237 // go ahead and exit the VM since the test apparently succeeded 2238 tty->print_cr("** Shutting down VM after successful fake OOM"); 2239 vm_exit(0); 2240 } 2241 #endif 2242 } 2243 2244 /** 2245 * The CodeCache is full. Print warning and disable compilation. 2246 * Schedule code cache cleaning so compilation can continue later. 2247 * This function needs to be called only from CodeCache::allocate(), 2248 * since we currently handle a full code cache uniformly. 2249 / 2250 void CompileBroker::handle_full_code_cache(int code_blob_type) { 2251 UseInterpreter = true; 2252 if (UseCompiler || AlwaysCompileLoopMethods ) { 2253 if (xtty != NULL) { 2254 ResourceMark rm; 2255 stringStream s; 2256 // Dump code cache state into a buffer before locking the tty, 2257 // because log_state() will use locks causing lock conflicts. 2258 CodeCache::log_state(&s); 2259 // Lock to prevent tearing 2260 ttyLocker ttyl; 2261 xtty->begin_elem("code_cache_full"); 2262 xtty->print("%s", s.as_string()); 2263 xtty->stamp(); 2264 xtty->end_elem(); 2265 } 2266 2267 #ifndef PRODUCT 2268 if (CompileTheWorld || ExitOnFullCodeCache) { 2269 codecache_print(/ detailed= / true); 2270 before_exit(JavaThread::current()); 2271 exit_globals(); // will delete tty 2272 vm_direct_exit(CompileTheWorld ? 0 : 1); 2273 } 2274 #endif 2275 if (UseCodeCacheFlushing) { 2276 // Since code cache is full, immediately stop new compiles 2277 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { 2278 NMethodSweeper::log_sweep("disable_compiler"); 2279 } 2280 } else { 2281 disable_compilation_forever(); 2282 } 2283 2284 CodeCache::report_codemem_full(code_blob_type, should_print_compiler_warning()); 2285 } 2286 } 2287 2288 // ------------------------------------------------------------------ 2289 // CompileBroker::set_last_compile 2290 // 2291 // Record this compilation for debugging purposes. 2292 void CompileBroker::set_last_compile(CompilerThread thread, methodHandle method, bool is_osr, int comp_level) { 2293 ResourceMark rm; 2294 char* method_name = method->name()->as_C_string(); 2295 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); 2296 _last_method_compiled[CompileBroker::name_buffer_length - 1] = '\0'; // ensure null terminated 2297 char current_method[CompilerCounters::cmname_buffer_length]; 2298 size_t maxLen = CompilerCounters::cmname_buffer_length; 2299 2300 if (UsePerfData) { 2301 const char* class_name = method->method_holder()->name()->as_C_string(); 2302 2303 size_t s1len = strlen(class_name); 2304 size_t s2len = strlen(method_name); 2305 2306 // check if we need to truncate the string 2307 if (s1len + s2len + 2 > maxLen) { 2308 2309 // the strategy is to lop off the leading characters of the 2310 // class name and the trailing characters of the method name. 2311 2312 if (s2len + 2 > maxLen) { 2313 // lop of the entire class name string, let snprintf handle 2314 // truncation of the method name. 2315 class_name += s1len; // null string 2316 } 2317 else { 2318 // lop off the extra characters from the front of the class name 2319 class_name += ((s1len + s2len + 2) - maxLen); 2320 } 2321 } 2322 2323 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); 2324 } 2325 2326 if (CICountOSR && is_osr) { 2327 _last_compile_type = osr_compile; 2328 } else { 2329 _last_compile_type = normal_compile; 2330 } 2331 _last_compile_level = comp_level; 2332 2333 if (UsePerfData) { 2334 CompilerCounters* counters = thread->counters(); 2335 counters->set_current_method(current_method); 2336 counters->set_compile_type((jlong)_last_compile_type); 2337 } 2338 } 2339 2340 2341 // ------------------------------------------------------------------ 2342 // CompileBroker::push_jni_handle_block 2343 // 2344 // Push on a new block of JNI handles. 2345 void CompileBroker::push_jni_handle_block() { 2346 JavaThread* thread = JavaThread::current(); 2347 2348 // Allocate a new block for JNI handles. 2349 // Inlined code from jni_PushLocalFrame() 2350 JNIHandleBlock* java_handles = thread->active_handles(); 2351 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); 2352 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); 2353 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. 2354 thread->set_active_handles(compile_handles); 2355 } 2356 2357 2358 // ------------------------------------------------------------------ 2359 // CompileBroker::pop_jni_handle_block 2360 // 2361 // Pop off the current block of JNI handles. 2362 void CompileBroker::pop_jni_handle_block() { 2363 JavaThread* thread = JavaThread::current(); 2364 2365 // Release our JNI handle block 2366 JNIHandleBlock* compile_handles = thread->active_handles(); 2367 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); 2368 thread->set_active_handles(java_handles); 2369 compile_handles->set_pop_frame_link(NULL); 2370 JNIHandleBlock::release_block(compile_handles, thread); // may block 2371 } 2372 2373 2374 // ------------------------------------------------------------------ 2375 // CompileBroker::check_break_at 2376 // 2377 // Should the compilation break at the current compilation. 2378 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { 2379 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { 2380 return true; 2381 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling 2382 return true; 2383 } else { 2384 return (compile_id == CIBreakAt); 2385 } 2386 } 2387 2388 // ------------------------------------------------------------------ 2389 // CompileBroker::collect_statistics 2390 // 2391 // Collect statistics about the compilation. 2392 2393 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { 2394 bool success = task->is_success(); 2395 methodHandle method (thread, task->method()); 2396 uint compile_id = task->compile_id(); 2397 bool is_osr = (task->osr_bci() != standard_entry_bci); 2398 nmethod* code = task->code(); 2399 CompilerCounters* counters = thread->counters(); 2400 2401 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); 2402 MutexLocker locker(CompileStatistics_lock); 2403 2404 // _perf variables are production performance counters which are 2405 // updated regardless of the setting of the CITime and CITimeEach flags 2406 // 2407 2408 // account all time, including bailouts and failures in this counter; 2409 // C1 and C2 counters are counting both successful and unsuccessful compiles 2410 _t_total_compilation.add(time); 2411 2412 if (!success) { 2413 _total_bailout_count++; 2414 if (UsePerfData) { 2415 _perf_last_failed_method->set_value(counters->current_method()); 2416 _perf_last_failed_type->set_value(counters->compile_type()); 2417 _perf_total_bailout_count->inc(); 2418 } 2419 _t_bailedout_compilation.add(time); 2420 } else if (code == NULL) { 2421 if (UsePerfData) { 2422 _perf_last_invalidated_method->set_value(counters->current_method()); 2423 _perf_last_invalidated_type->set_value(counters->compile_type()); 2424 _perf_total_invalidated_count->inc(); 2425 } 2426 _total_invalidated_count++; 2427 _t_invalidated_compilation.add(time); 2428 } else { 2429 // Compilation succeeded 2430 2431 // update compilation ticks - used by the implementation of 2432 // java.lang.management.CompilationMBean 2433 _perf_total_compilation->inc(time.ticks()); 2434 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; 2435 2436 if (CITime) { 2437 int bytes_compiled = method->code_size() + task->num_inlined_bytecodes(); 2438 JVMCI_ONLY(CompilerStatistics* stats = compiler(task->comp_level())->stats();) 2439 if (is_osr) { 2440 _t_osr_compilation.add(time); 2441 _sum_osr_bytes_compiled += bytes_compiled; 2442 JVMCI_ONLY(stats->_osr.update(time, bytes_compiled);) 2443 } else { 2444 _t_standard_compilation.add(time); 2445 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); 2446 JVMCI_ONLY(stats->_standard.update(time, bytes_compiled);) 2447 } 2448 JVMCI_ONLY(stats->_nmethods_size += code->total_size();) 2449 JVMCI_ONLY(stats->_nmethods_code_size += code->insts_size();) 2450 } 2451 2452 if (UsePerfData) { 2453 // save the name of the last method compiled 2454 _perf_last_method->set_value(counters->current_method()); 2455 _perf_last_compile_type->set_value(counters->compile_type()); 2456 _perf_last_compile_size->set_value(method->code_size() + 2457 task->num_inlined_bytecodes()); 2458 if (is_osr) { 2459 _perf_osr_compilation->inc(time.ticks()); 2460 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); 2461 } else { 2462 _perf_standard_compilation->inc(time.ticks()); 2463 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); 2464 } 2465 } 2466 2467 if (CITimeEach) { 2468 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); 2469 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", 2470 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); 2471 } 2472 2473 // Collect counts of successful compilations 2474 _sum_nmethod_size += code->total_size(); 2475 _sum_nmethod_code_size += code->insts_size(); 2476 _total_compile_count++; 2477 2478 if (UsePerfData) { 2479 _perf_sum_nmethod_size->inc( code->total_size()); 2480 _perf_sum_nmethod_code_size->inc(code->insts_size()); 2481 _perf_total_compile_count->inc(); 2482 } 2483 2484 if (is_osr) { 2485 if (UsePerfData) _perf_total_osr_compile_count->inc(); 2486 _total_osr_compile_count++; 2487 } else { 2488 if (UsePerfData) _perf_total_standard_compile_count->inc(); 2489 _total_standard_compile_count++; 2490 } 2491 } 2492 // set the current method for the thread to null 2493 if (UsePerfData) counters->set_current_method(""); 2494 } 2495 2496 const char* CompileBroker::compiler_name(int comp_level) { 2497 AbstractCompiler comp = CompileBroker::compiler(comp_level); 2498 if (comp == NULL) { 2499 return "no compiler"; 2500 } else { 2501 return (comp->name()); 2502 } 2503 } 2504 2505 #if INCLUDE_JVMCI 2506 void CompileBroker::print_times(AbstractCompiler comp) { 2507 CompilerStatistics* stats = comp->stats(); 2508 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}", 2509 comp->name(), stats->bytes_per_second(), 2510 stats->_standard._time.seconds(), stats->_standard._bytes, stats->_standard._count, 2511 stats->_osr._time.seconds(), stats->_osr._bytes, stats->_osr._count, 2512 stats->_nmethods_size, stats->_nmethods_code_size); 2513 comp->print_timers(); 2514 } 2515 #endif 2516 2517 void CompileBroker::print_times(bool per_compiler, bool aggregate) { 2518 #if INCLUDE_JVMCI 2519 elapsedTimer standard_compilation; 2520 elapsedTimer total_compilation; 2521 elapsedTimer osr_compilation; 2522 2523 int standard_bytes_compiled = 0; 2524 int osr_bytes_compiled = 0; 2525 2526 int standard_compile_count = 0; 2527 int osr_compile_count = 0; 2528 int total_compile_count = 0; 2529 2530 int nmethods_size = 0; 2531 int nmethods_code_size = 0; 2532 bool printedHeader = false; 2533 2534 for (unsigned int i = 0; i < sizeof(_compilers) / sizeof(AbstractCompiler*); i++) { 2535 AbstractCompiler* comp = _compilers[i]; 2536 if (comp != NULL) { 2537 if (per_compiler && aggregate && !printedHeader) { 2538 printedHeader = true; 2539 tty->cr(); 2540 tty->print_cr("Individual compiler times (for compiled methods only)"); 2541 tty->print_cr("------------------------------------------------"); 2542 tty->cr(); 2543 } 2544 CompilerStatistics* stats = comp->stats(); 2545 2546 standard_compilation.add(stats->_standard._time); 2547 osr_compilation.add(stats->_osr._time); 2548 2549 standard_bytes_compiled += stats->_standard._bytes; 2550 osr_bytes_compiled += stats->_osr._bytes; 2551 2552 standard_compile_count += stats->_standard._count; 2553 osr_compile_count += stats->_osr._count; 2554 2555 nmethods_size += stats->_nmethods_size; 2556 nmethods_code_size += stats->_nmethods_code_size; 2557 2558 if (per_compiler) { 2559 print_times(comp); 2560 } 2561 } 2562 } 2563 total_compile_count = osr_compile_count + standard_compile_count; 2564 total_compilation.add(osr_compilation); 2565 total_compilation.add(standard_compilation); 2566 2567 // In hosted mode, print the JVMCI compiler specific counters manually. 2568 if (!UseJVMCICompiler) { 2569 JVMCICompiler::print_compilation_timers(); 2570 } 2571 #else 2572 elapsedTimer standard_compilation = CompileBroker::_t_standard_compilation; 2573 elapsedTimer osr_compilation = CompileBroker::_t_osr_compilation; 2574 elapsedTimer total_compilation = CompileBroker::_t_total_compilation; 2575 2576 int standard_bytes_compiled = CompileBroker::_sum_standard_bytes_compiled; 2577 int osr_bytes_compiled = CompileBroker::_sum_osr_bytes_compiled; 2578 2579 int standard_compile_count = CompileBroker::_total_standard_compile_count; 2580 int osr_compile_count = CompileBroker::_total_osr_compile_count; 2581 int total_compile_count = CompileBroker::_total_compile_count; 2582 2583 int nmethods_size = CompileBroker::_sum_nmethod_code_size; 2584 int nmethods_code_size = CompileBroker::_sum_nmethod_size; 2585 #endif 2586 2587 if (!aggregate) { 2588 return; 2589 } 2590 tty->cr(); 2591 tty->print_cr("Accumulated compiler times"); 2592 tty->print_cr("----------------------------------------------------------"); 2593 //0000000000111111111122222222223333333333444444444455555555556666666666 2594 //0123456789012345678901234567890123456789012345678901234567890123456789 2595 tty->print_cr(" Total compilation time : %7.3f s", total_compilation.seconds()); 2596 tty->print_cr(" Standard compilation : %7.3f s, Average : %2.3f s", 2597 standard_compilation.seconds(), 2598 standard_compilation.seconds() / standard_compile_count); 2599 tty->print_cr(" Bailed out compilation : %7.3f s, Average : %2.3f s", 2600 CompileBroker::_t_bailedout_compilation.seconds(), 2601 CompileBroker::_t_bailedout_compilation.seconds() / CompileBroker::_total_bailout_count); 2602 tty->print_cr(" On stack replacement : %7.3f s, Average : %2.3f s", 2603 osr_compilation.seconds(), 2604 osr_compilation.seconds() / osr_compile_count); 2605 tty->print_cr(" Invalidated : %7.3f s, Average : %2.3f s", 2606 CompileBroker::_t_invalidated_compilation.seconds(), 2607 CompileBroker::_t_invalidated_compilation.seconds() / CompileBroker::_total_invalidated_count); 2608 2609 AbstractCompiler comp = compiler(CompLevel_simple); 2610 if (comp != NULL) { 2611 tty->cr(); 2612 comp->print_timers(); 2613 } 2614 comp = compiler(CompLevel_full_optimization); 2615 if (comp != NULL) { 2616 tty->cr(); 2617 comp->print_timers(); 2618 } 2619 tty->cr(); 2620 tty->print_cr(" Total compiled methods : %8d methods", total_compile_count); 2621 tty->print_cr(" Standard compilation : %8d methods", standard_compile_count); 2622 tty->print_cr(" On stack replacement : %8d methods", osr_compile_count); 2623 int tcb = osr_bytes_compiled + standard_bytes_compiled; 2624 tty->print_cr(" Total compiled bytecodes : %8d bytes", tcb); 2625 tty->print_cr(" Standard compilation : %8d bytes", standard_bytes_compiled); 2626 tty->print_cr(" On stack replacement : %8d bytes", osr_bytes_compiled); 2627 double tcs = total_compilation.seconds(); 2628 int bps = tcs == 0.0 ? 0 : (int)(tcb / tcs); 2629 tty->print_cr(" Average compilation speed : %8d bytes/s", bps); 2630 tty->cr(); 2631 tty->print_cr(" nmethod code size : %8d bytes", nmethods_code_size); 2632 tty->print_cr(" nmethod total size : %8d bytes", nmethods_size); 2633 } 2634 2635 // Debugging output for failure 2636 void CompileBroker::print_last_compile() { 2637 if ( _last_compile_level != CompLevel_none && 2638 compiler(_last_compile_level) != NULL && 2639 _last_method_compiled != NULL && 2640 _last_compile_type != no_compile) { 2641 if (_last_compile_type == osr_compile) { 2642 tty->print_cr("Last parse: [osr]%d+++(%d) %s", 2643 _osr_compilation_id, _last_compile_level, _last_method_compiled); 2644 } else { 2645 tty->print_cr("Last parse: %d+++(%d) %s", 2646 _compilation_id, _last_compile_level, _last_method_compiled); 2647 } 2648 } 2649 } 2650 2651 2652 void CompileBroker::print_compiler_threads_on(outputStream st) { 2653 #ifndef PRODUCT 2654 st->print_cr("Compiler thread printing unimplemented."); 2655 st->cr(); 2656 #endif 2657 }