compileBroker.cpp revision 5946:b5c8a61d7fa0
1169695Skan/* 2169695Skan * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. 3169695Skan * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4169695Skan * 5169695Skan * This code is free software; you can redistribute it and/or modify it 6169695Skan * under the terms of the GNU General Public License version 2 only, as 7169695Skan * published by the Free Software Foundation. 8169695Skan * 9169695Skan * This code is distributed in the hope that it will be useful, but WITHOUT 10169695Skan * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11169695Skan * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12169695Skan * version 2 for more details (a copy is included in the LICENSE file that 13169695Skan * accompanied this code). 14169695Skan * 15169695Skan * You should have received a copy of the GNU General Public License version 16169695Skan * 2 along with this work; if not, write to the Free Software Foundation, 17169695Skan * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18169695Skan * 19169695Skan * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20169695Skan * or visit www.oracle.com if you need additional information or have any 21169695Skan * questions. 22169695Skan * 23169695Skan */ 24169695Skan 25169695Skan#include "precompiled.hpp" 26169695Skan#include "classfile/systemDictionary.hpp" 27169695Skan#include "classfile/vmSymbols.hpp" 28169695Skan#include "code/codeCache.hpp" 29169695Skan#include "compiler/compileBroker.hpp" 30169695Skan#include "compiler/compileLog.hpp" 31169695Skan#include "compiler/compilerOracle.hpp" 32169695Skan#include "interpreter/linkResolver.hpp" 33169695Skan#include "memory/allocation.inline.hpp" 34169695Skan#include "oops/methodData.hpp" 35169695Skan#include "oops/method.hpp" 36169695Skan#include "oops/oop.inline.hpp" 37169695Skan#include "prims/nativeLookup.hpp" 38169695Skan#include "runtime/arguments.hpp" 39169695Skan#include "runtime/compilationPolicy.hpp" 40169695Skan#include "runtime/init.hpp" 41169695Skan#include "runtime/interfaceSupport.hpp" 42169695Skan#include "runtime/javaCalls.hpp" 43169695Skan#include "runtime/os.hpp" 44169695Skan#include "runtime/sharedRuntime.hpp" 45169695Skan#include "runtime/sweeper.hpp" 46169695Skan#include "trace/tracing.hpp" 47169695Skan#include "utilities/dtrace.hpp" 48169695Skan#include "utilities/events.hpp" 49169695Skan#ifdef COMPILER1 50169695Skan#include "c1/c1_Compiler.hpp" 51169695Skan#endif 52169695Skan#ifdef COMPILER2 53169695Skan#include "opto/c2compiler.hpp" 54169695Skan#endif 55169695Skan#ifdef SHARK 56169695Skan#include "shark/sharkCompiler.hpp" 57169695Skan#endif 58169695Skan 59169695Skan#ifdef DTRACE_ENABLED 60169695Skan 61169695Skan// Only bother with this argument setup if dtrace is available 62169695Skan 63169695Skan#ifndef USDT2 64169695SkanHS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, 65169695Skan char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); 66169695SkanHS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, 67169695Skan char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); 68169695Skan 69169695Skan#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ 70169695Skan { \ 71169695Skan Symbol* klass_name = (method)->klass_name(); \ 72169695Skan Symbol* name = (method)->name(); \ 73169695Skan Symbol* signature = (method)->signature(); \ 74169695Skan HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ 75169695Skan comp_name, strlen(comp_name), \ 76169695Skan klass_name->bytes(), klass_name->utf8_length(), \ 77169695Skan name->bytes(), name->utf8_length(), \ 78169695Skan signature->bytes(), signature->utf8_length()); \ 79169695Skan } 80169695Skan 81169695Skan#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ 82169695Skan { \ 83169695Skan Symbol* klass_name = (method)->klass_name(); \ 84169695Skan Symbol* name = (method)->name(); \ 85169695Skan Symbol* signature = (method)->signature(); \ 86169695Skan HS_DTRACE_PROBE9(hotspot, method__compile__end, \ 87169695Skan comp_name, strlen(comp_name), \ 88169695Skan klass_name->bytes(), klass_name->utf8_length(), \ 89169695Skan name->bytes(), name->utf8_length(), \ 90169695Skan signature->bytes(), signature->utf8_length(), (success)); \ 91169695Skan } 92169695Skan 93169695Skan#else /* USDT2 */ 94169695Skan 95169695Skan#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ 96169695Skan { \ 97169695Skan Symbol* klass_name = (method)->klass_name(); \ 98169695Skan Symbol* name = (method)->name(); \ 99169695Skan Symbol* signature = (method)->signature(); \ 100169695Skan HOTSPOT_METHOD_COMPILE_BEGIN( \ 101169695Skan comp_name, strlen(comp_name), \ 102169695Skan (char *) klass_name->bytes(), klass_name->utf8_length(), \ 103169695Skan (char *) name->bytes(), name->utf8_length(), \ 104169695Skan (char *) signature->bytes(), signature->utf8_length()); \ 105169695Skan } 106169695Skan 107169695Skan#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ 108169695Skan { \ 109169695Skan Symbol* klass_name = (method)->klass_name(); \ 110169695Skan Symbol* name = (method)->name(); \ 111169695Skan Symbol* signature = (method)->signature(); \ 112169695Skan HOTSPOT_METHOD_COMPILE_END( \ 113169695Skan comp_name, strlen(comp_name), \ 114169695Skan (char *) klass_name->bytes(), klass_name->utf8_length(), \ 115169695Skan (char *) name->bytes(), name->utf8_length(), \ 116169695Skan (char *) signature->bytes(), signature->utf8_length(), (success)); \ 117169695Skan } 118169695Skan#endif /* USDT2 */ 119169695Skan 120169695Skan#else // ndef DTRACE_ENABLED 121169695Skan 122169695Skan#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) 123169695Skan#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) 124169695Skan 125169695Skan#endif // ndef DTRACE_ENABLED 126169695Skan 127169695Skanbool CompileBroker::_initialized = false; 128169695Skanvolatile bool CompileBroker::_should_block = false; 129169695Skanvolatile jint CompileBroker::_should_compile_new_jobs = run_compilation; 130169695Skan 131169695Skan// The installed compiler(s) 132169695SkanAbstractCompiler* CompileBroker::_compilers[2]; 133169695Skan 134169695Skan// These counters are used for assigning id's to each compilation 135169695Skanuint CompileBroker::_compilation_id = 0; 136169695Skanuint CompileBroker::_osr_compilation_id = 0; 137169695Skan 138169695Skan// Debugging information 139169695Skanint CompileBroker::_last_compile_type = no_compile; 140169695Skanint CompileBroker::_last_compile_level = CompLevel_none; 141169695Skanchar CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; 142169695Skan 143169695Skan// Performance counters 144169695SkanPerfCounter* CompileBroker::_perf_total_compilation = NULL; 145169695SkanPerfCounter* CompileBroker::_perf_osr_compilation = NULL; 146169695SkanPerfCounter* CompileBroker::_perf_standard_compilation = NULL; 147169695Skan 148169695SkanPerfCounter* CompileBroker::_perf_total_bailout_count = NULL; 149169695SkanPerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; 150169695SkanPerfCounter* CompileBroker::_perf_total_compile_count = NULL; 151169695SkanPerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; 152169695SkanPerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; 153169695Skan 154169695SkanPerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; 155169695SkanPerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; 156169695SkanPerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; 157169695SkanPerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; 158169695Skan 159169695SkanPerfStringVariable* CompileBroker::_perf_last_method = NULL; 160169695SkanPerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; 161169695SkanPerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; 162169695SkanPerfVariable* CompileBroker::_perf_last_compile_type = NULL; 163169695SkanPerfVariable* CompileBroker::_perf_last_compile_size = NULL; 164169695SkanPerfVariable* CompileBroker::_perf_last_failed_type = NULL; 165169695SkanPerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; 166169695Skan 167169695Skan// Timers and counters for generating statistics 168169695SkanelapsedTimer CompileBroker::_t_total_compilation; 169169695SkanelapsedTimer CompileBroker::_t_osr_compilation; 170169695SkanelapsedTimer CompileBroker::_t_standard_compilation; 171169695Skan 172169695Skanint CompileBroker::_total_bailout_count = 0; 173169695Skanint CompileBroker::_total_invalidated_count = 0; 174169695Skanint CompileBroker::_total_compile_count = 0; 175169695Skanint CompileBroker::_total_osr_compile_count = 0; 176169695Skanint CompileBroker::_total_standard_compile_count = 0; 177169695Skan 178169695Skanint CompileBroker::_sum_osr_bytes_compiled = 0; 179169695Skanint CompileBroker::_sum_standard_bytes_compiled = 0; 180169695Skanint CompileBroker::_sum_nmethod_size = 0; 181169695Skanint CompileBroker::_sum_nmethod_code_size = 0; 182169695Skan 183169695Skanlong CompileBroker::_peak_compilation_time = 0; 184169695Skan 185169695SkanCompileQueue* CompileBroker::_c2_method_queue = NULL; 186169695SkanCompileQueue* CompileBroker::_c1_method_queue = NULL; 187169695SkanCompileTask* CompileBroker::_task_free_list = NULL; 188169695Skan 189169695SkanGrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; 190169695Skan 191169695Skan 192169695Skanclass CompilationLog : public StringEventLog { 193169695Skan public: 194169695Skan CompilationLog() : StringEventLog("Compilation events") { 195169695Skan } 196169695Skan 197169695Skan void log_compile(JavaThread* thread, CompileTask* task) { 198169695Skan StringLogMessage lm; 199169695Skan stringStream sstr = lm.stream(); 200169695Skan // msg.time_stamp().update_to(tty->time_stamp().ticks()); 201169695Skan task->print_compilation(&sstr, NULL, true); 202169695Skan log(thread, "%s", (const char*)lm); 203169695Skan } 204169695Skan 205169695Skan void log_nmethod(JavaThread* thread, nmethod* nm) { 206169695Skan log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", 207169695Skan nm->compile_id(), nm->is_osr_method() ? "%" : "", 208169695Skan nm, nm->code_begin(), nm->code_end()); 209169695Skan } 210169695Skan 211169695Skan void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { 212169695Skan StringLogMessage lm; 213169695Skan lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); 214169695Skan if (retry_message != NULL) { 215169695Skan lm.append(" (%s)", retry_message); 216169695Skan } 217169695Skan lm.print("\n"); 218169695Skan log(thread, "%s", (const char*)lm); 219169695Skan } 220169695Skan}; 221169695Skan 222169695Skanstatic CompilationLog* _compilation_log = NULL; 223169695Skan 224169695Skanvoid compileBroker_init() { 225169695Skan if (LogEvents) { 226169695Skan _compilation_log = new CompilationLog(); 227169695Skan } 228169695Skan} 229169695Skan 230169695SkanCompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { 231169695Skan CompilerThread* thread = CompilerThread::current(); 232169695Skan thread->set_task(task); 233169695Skan CompileLog* log = thread->log(); 234169695Skan if (log != NULL) task->log_task_start(log); 235169695Skan} 236169695Skan 237169695SkanCompileTaskWrapper::~CompileTaskWrapper() { 238169695Skan CompilerThread* thread = CompilerThread::current(); 239169695Skan CompileTask* task = thread->task(); 240169695Skan CompileLog* log = thread->log(); 241169695Skan if (log != NULL) task->log_task_done(log); 242169695Skan thread->set_task(NULL); 243169695Skan task->set_code_handle(NULL); 244282152Spfg thread->set_env(NULL); 245282152Spfg if (task->is_blocking()) { 246282152Spfg MutexLocker notifier(task->lock(), thread); 247282152Spfg task->mark_complete(); 248282152Spfg // Notify the waiting thread that the compilation has completed. 249282152Spfg task->lock()->notify_all(); 250282152Spfg } else { 251282152Spfg task->mark_complete(); 252282152Spfg 253282152Spfg // By convention, the compiling thread is responsible for 254282152Spfg // recycling a non-blocking CompileTask. 255282152Spfg CompileBroker::free_task(task); 256282152Spfg } 257282152Spfg} 258282152Spfg 259282152Spfg 260282152Spfg// ------------------------------------------------------------------ 261282152Spfg// CompileTask::initialize 262282152Spfgvoid CompileTask::initialize(int compile_id, 263282152Spfg methodHandle method, 264282152Spfg int osr_bci, 265282152Spfg int comp_level, 266282152Spfg methodHandle hot_method, 267282152Spfg int hot_count, 268282152Spfg const char* comment, 269282152Spfg bool is_blocking) { 270282152Spfg assert(!_lock->is_locked(), "bad locking"); 271282152Spfg 272282152Spfg _compile_id = compile_id; 273282152Spfg _method = method(); 274282152Spfg _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); 275282152Spfg _osr_bci = osr_bci; 276282152Spfg _is_blocking = is_blocking; 277282152Spfg _comp_level = comp_level; 278282152Spfg _num_inlined_bytecodes = 0; 279282152Spfg 280282152Spfg _is_complete = false; 281282152Spfg _is_success = false; 282282152Spfg _code_handle = NULL; 283282152Spfg 284282152Spfg _hot_method = NULL; 285282152Spfg _hot_method_holder = NULL; 286282152Spfg _hot_count = hot_count; 287282152Spfg _time_queued = 0; // tidy 288282152Spfg _comment = comment; 289282152Spfg 290282152Spfg if (LogCompilation) { 291282152Spfg _time_queued = os::elapsed_counter(); 292282152Spfg if (hot_method.not_null()) { 293282152Spfg if (hot_method == method) { 294282152Spfg _hot_method = _method; 295282152Spfg } else { 296282152Spfg _hot_method = hot_method(); 297282152Spfg // only add loader or mirror if different from _method_holder 298282152Spfg _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); 299282152Spfg } 300282152Spfg } 301282152Spfg } 302282152Spfg 303282152Spfg _next = NULL; 304282152Spfg} 305282152Spfg 306282152Spfg// ------------------------------------------------------------------ 307282152Spfg// CompileTask::code/set_code 308282152Spfgnmethod* CompileTask::code() const { 309282152Spfg if (_code_handle == NULL) return NULL; 310282152Spfg return _code_handle->code(); 311282152Spfg} 312282152Spfgvoid CompileTask::set_code(nmethod* nm) { 313282152Spfg if (_code_handle == NULL && nm == NULL) return; 314282152Spfg guarantee(_code_handle != NULL, ""); 315282152Spfg _code_handle->set_code(nm); 316282152Spfg if (nm == NULL) _code_handle = NULL; // drop the handle also 317282152Spfg} 318282152Spfg 319282152Spfg// ------------------------------------------------------------------ 320282152Spfg// CompileTask::free 321282152Spfgvoid CompileTask::free() { 322282152Spfg set_code(NULL); 323282152Spfg assert(!_lock->is_locked(), "Should not be locked when freed"); 324282152Spfg JNIHandles::destroy_global(_method_holder); 325282152Spfg JNIHandles::destroy_global(_hot_method_holder); 326282152Spfg} 327282152Spfg 328282152Spfg 329282152Spfgvoid CompileTask::mark_on_stack() { 330282152Spfg // Mark these methods as something redefine classes cannot remove. 331282152Spfg _method->set_on_stack(true); 332282152Spfg if (_hot_method != NULL) { 333282152Spfg _hot_method->set_on_stack(true); 334282152Spfg } 335282152Spfg} 336282152Spfg 337282152Spfg// ------------------------------------------------------------------ 338282152Spfg// CompileTask::print 339282152Spfgvoid CompileTask::print() { 340282152Spfg tty->print("<CompileTask compile_id=%d ", _compile_id); 341282152Spfg tty->print("method="); 342282152Spfg _method->print_name(tty); 343282152Spfg tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", 344282152Spfg _osr_bci, bool_to_str(_is_blocking), 345282152Spfg bool_to_str(_is_complete), bool_to_str(_is_success)); 346282152Spfg} 347282152Spfg 348282152Spfg 349282152Spfg// ------------------------------------------------------------------ 350282152Spfg// CompileTask::print_line_on_error 351282152Spfg// 352282152Spfg// This function is called by fatal error handler when the thread 353282152Spfg// causing troubles is a compiler thread. 354282152Spfg// 355282152Spfg// Do not grab any lock, do not allocate memory. 356282152Spfg// 357282152Spfg// Otherwise it's the same as CompileTask::print_line() 358282152Spfg// 359282152Spfgvoid CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { 360282152Spfg // print compiler name 361282152Spfg st->print("%s:", CompileBroker::compiler_name(comp_level())); 362282152Spfg print_compilation(st); 363282152Spfg} 364282152Spfg 365282152Spfg// ------------------------------------------------------------------ 366282152Spfg// CompileTask::print_line 367282152Spfgvoid CompileTask::print_line() { 368282152Spfg ttyLocker ttyl; // keep the following output all in one block 369282152Spfg // print compiler name if requested 370282152Spfg if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); 371282152Spfg print_compilation(); 372282152Spfg} 373282152Spfg 374282152Spfg 375282152Spfg// ------------------------------------------------------------------ 376282152Spfg// CompileTask::print_compilation_impl 377282152Spfgvoid CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, 378282152Spfg bool is_osr_method, int osr_bci, bool is_blocking, 379282152Spfg const char* msg, bool short_form) { 380282152Spfg if (!short_form) { 381282152Spfg st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp 382282152Spfg } 383282152Spfg st->print("%4d ", compile_id); // print compilation number 384282152Spfg 385282152Spfg // For unloaded methods the transition to zombie occurs after the 386282152Spfg // method is cleared so it's impossible to report accurate 387282152Spfg // information for that case. 388282152Spfg bool is_synchronized = false; 389282152Spfg bool has_exception_handler = false; 390282152Spfg bool is_native = false; 391282152Spfg if (method != NULL) { 392282152Spfg is_synchronized = method->is_synchronized(); 393169695Skan has_exception_handler = method->has_exception_handler(); 394169695Skan is_native = method->is_native(); 395169695Skan } 396169695Skan // method attributes 397169695Skan const char compile_type = is_osr_method ? '%' : ' '; 398169695Skan const char sync_char = is_synchronized ? 's' : ' '; 399169695Skan const char exception_char = has_exception_handler ? '!' : ' '; 400169695Skan const char blocking_char = is_blocking ? 'b' : ' '; 401169695Skan const char native_char = is_native ? 'n' : ' '; 402169695Skan 403169695Skan // print method attributes 404169695Skan st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); 405169695Skan 406169695Skan if (TieredCompilation) { 407169695Skan if (comp_level != -1) st->print("%d ", comp_level); 408169695Skan else st->print("- "); 409169695Skan } 410169695Skan st->print(" "); // more indent 411169695Skan 412169695Skan if (method == NULL) { 413169695Skan st->print("(method)"); 414169695Skan } else { 415169695Skan method->print_short_name(st); 416169695Skan if (is_osr_method) { 417169695Skan st->print(" @ %d", osr_bci); 418169695Skan } 419169695Skan if (method->is_native()) 420169695Skan st->print(" (native)"); 421169695Skan else 422169695Skan st->print(" (%d bytes)", method->code_size()); 423169695Skan } 424169695Skan 425169695Skan if (msg != NULL) { 426169695Skan st->print(" %s", msg); 427169695Skan } 428169695Skan if (!short_form) { 429169695Skan st->cr(); 430169695Skan } 431169695Skan} 432169695Skan 433169695Skan// ------------------------------------------------------------------ 434169695Skan// CompileTask::print_inlining 435169695Skanvoid CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { 436169695Skan // 1234567 437169695Skan st->print(" "); // print timestamp 438169695Skan // 1234 439169695Skan st->print(" "); // print compilation number 440169695Skan 441169695Skan // method attributes 442169695Skan if (method->is_loaded()) { 443169695Skan const char sync_char = method->is_synchronized() ? 's' : ' '; 444169695Skan const char exception_char = method->has_exception_handlers() ? '!' : ' '; 445169695Skan const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; 446169695Skan 447169695Skan // print method attributes 448169695Skan st->print(" %c%c%c ", sync_char, exception_char, monitors_char); 449169695Skan } else { 450169695Skan // %s!bn 451169695Skan st->print(" "); // print method attributes 452169695Skan } 453169695Skan 454169695Skan if (TieredCompilation) { 455169695Skan st->print(" "); 456169695Skan } 457169695Skan st->print(" "); // more indent 458169695Skan st->print(" "); // initial inlining indent 459169695Skan 460282152Spfg for (int i = 0; i < inline_level; i++) st->print(" "); 461169695Skan 462169695Skan st->print("@ %d ", bci); // print bci 463169695Skan method->print_short_name(st); 464169695Skan if (method->is_loaded()) 465169695Skan st->print(" (%d bytes)", method->code_size()); 466169695Skan else 467169695Skan st->print(" (not loaded)"); 468169695Skan 469169695Skan if (msg != NULL) { 470169695Skan st->print(" %s", msg); 471169695Skan } 472169695Skan st->cr(); 473169695Skan} 474169695Skan 475169695Skan// ------------------------------------------------------------------ 476169695Skan// CompileTask::print_inline_indent 477169695Skanvoid CompileTask::print_inline_indent(int inline_level, outputStream* st) { 478169695Skan // 1234567 479169695Skan st->print(" "); // print timestamp 480169695Skan // 1234 481169695Skan st->print(" "); // print compilation number 482169695Skan // %s!bn 483169695Skan st->print(" "); // print method attributes 484169695Skan if (TieredCompilation) { 485169695Skan st->print(" "); 486169695Skan } 487169695Skan st->print(" "); // more indent 488169695Skan st->print(" "); // initial inlining indent 489169695Skan for (int i = 0; i < inline_level; i++) st->print(" "); 490169695Skan} 491169695Skan 492169695Skan// ------------------------------------------------------------------ 493169695Skan// CompileTask::print_compilation 494169695Skanvoid CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { 495169695Skan bool is_osr_method = osr_bci() != InvocationEntryBci; 496169695Skan print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); 497169695Skan} 498169695Skan 499169695Skan// ------------------------------------------------------------------ 500169695Skan// CompileTask::log_task 501169695Skanvoid CompileTask::log_task(xmlStream* log) { 502169695Skan Thread* thread = Thread::current(); 503169695Skan methodHandle method(thread, this->method()); 504169695Skan ResourceMark rm(thread); 505169695Skan 506169695Skan // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> 507169695Skan log->print(" compile_id='%d'", _compile_id); 508169695Skan if (_osr_bci != CompileBroker::standard_entry_bci) { 509169695Skan log->print(" compile_kind='osr'"); // same as nmethod::compile_kind 510169695Skan } // else compile_kind='c2c' 511169695Skan if (!method.is_null()) log->method(method); 512169695Skan if (_osr_bci != CompileBroker::standard_entry_bci) { 513169695Skan log->print(" osr_bci='%d'", _osr_bci); 514169695Skan } 515169695Skan if (_comp_level != CompLevel_highest_tier) { 516169695Skan log->print(" level='%d'", _comp_level); 517169695Skan } 518169695Skan if (_is_blocking) { 519169695Skan log->print(" blocking='1'"); 520169695Skan } 521169695Skan log->stamp(); 522169695Skan} 523169695Skan 524169695Skan 525169695Skan// ------------------------------------------------------------------ 526169695Skan// CompileTask::log_task_queued 527169695Skanvoid CompileTask::log_task_queued() { 528169695Skan Thread* thread = Thread::current(); 529169695Skan ttyLocker ttyl; 530169695Skan ResourceMark rm(thread); 531169695Skan 532169695Skan xtty->begin_elem("task_queued"); 533169695Skan log_task(xtty); 534169695Skan if (_comment != NULL) { 535169695Skan xtty->print(" comment='%s'", _comment); 536169695Skan } 537169695Skan if (_hot_method != NULL) { 538169695Skan methodHandle hot(thread, _hot_method); 539169695Skan methodHandle method(thread, _method); 540169695Skan if (hot() != method()) { 541169695Skan xtty->method(hot); 542169695Skan } 543169695Skan } 544169695Skan if (_hot_count != 0) { 545169695Skan xtty->print(" hot_count='%d'", _hot_count); 546169695Skan } 547169695Skan xtty->end_elem(); 548169695Skan} 549169695Skan 550169695Skan 551169695Skan// ------------------------------------------------------------------ 552169695Skan// CompileTask::log_task_start 553169695Skanvoid CompileTask::log_task_start(CompileLog* log) { 554169695Skan log->begin_head("task"); 555169695Skan log_task(log); 556169695Skan log->end_head(); 557169695Skan} 558169695Skan 559169695Skan 560169695Skan// ------------------------------------------------------------------ 561169695Skan// CompileTask::log_task_done 562169695Skanvoid CompileTask::log_task_done(CompileLog* log) { 563169695Skan Thread* thread = Thread::current(); 564169695Skan methodHandle method(thread, this->method()); 565169695Skan ResourceMark rm(thread); 566169695Skan 567169695Skan // <task_done ... stamp='1.234'> </task> 568169695Skan nmethod* nm = code(); 569169695Skan log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", 570169695Skan _is_success, nm == NULL ? 0 : nm->content_size(), 571169695Skan method->invocation_count()); 572169695Skan int bec = method->backedge_count(); 573169695Skan if (bec != 0) log->print(" backedge_count='%d'", bec); 574169695Skan // Note: "_is_complete" is about to be set, but is not. 575169695Skan if (_num_inlined_bytecodes != 0) { 576169695Skan log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); 577169695Skan } 578169695Skan log->stamp(); 579169695Skan log->end_elem(); 580169695Skan log->tail("task"); 581169695Skan log->clear_identities(); // next task will have different CI 582169695Skan if (log->unflushed_count() > 2000) { 583169695Skan log->flush(); 584169695Skan } 585169695Skan log->mark_file_end(); 586169695Skan} 587169695Skan 588169695Skan 589169695Skan 590169695Skan// ------------------------------------------------------------------ 591169695Skan// CompileQueue::add 592169695Skan// 593169695Skan// Add a CompileTask to a CompileQueue 594169695Skanvoid CompileQueue::add(CompileTask* task) { 595169695Skan assert(lock()->owned_by_self(), "must own lock"); 596169695Skan 597169695Skan task->set_next(NULL); 598169695Skan task->set_prev(NULL); 599169695Skan 600169695Skan if (_last == NULL) { 601169695Skan // The compile queue is empty. 602169695Skan assert(_first == NULL, "queue is empty"); 603169695Skan _first = task; 604169695Skan _last = task; 605169695Skan } else { 606169695Skan // Append the task to the queue. 607169695Skan assert(_last->next() == NULL, "not last"); 608169695Skan _last->set_next(task); 609169695Skan task->set_prev(_last); 610169695Skan _last = task; 611169695Skan } 612169695Skan ++_size; 613169695Skan 614169695Skan // Mark the method as being in the compile queue. 615169695Skan task->method()->set_queued_for_compilation(); 616169695Skan 617169695Skan if (CIPrintCompileQueue) { 618169695Skan print(); 619169695Skan } 620169695Skan 621169695Skan if (LogCompilation && xtty != NULL) { 622169695Skan task->log_task_queued(); 623169695Skan } 624169695Skan 625169695Skan // Notify CompilerThreads that a task is available. 626169695Skan lock()->notify_all(); 627169695Skan} 628169695Skan 629169695Skan// ------------------------------------------------------------------ 630169695Skan// CompileQueue::get 631169695Skan// 632169695Skan// Get the next CompileTask from a CompileQueue 633169695SkanCompileTask* CompileQueue::get() { 634169695Skan NMethodSweeper::possibly_sweep(); 635169695Skan 636169695Skan MutexLocker locker(lock()); 637169695Skan // Wait for an available CompileTask. 638169695Skan while (_first == NULL) { 639169695Skan // There is no work to be done right now. Wait. 640169695Skan if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) { 641169695Skan // During the emergency sweeping periods, wake up and sweep occasionally 642169695Skan bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000); 643169695Skan if (timedout) { 644169695Skan MutexUnlocker ul(lock()); 645169695Skan // When otherwise not busy, run nmethod sweeping 646169695Skan NMethodSweeper::possibly_sweep(); 647169695Skan } 648169695Skan } else { 649169695Skan // During normal operation no need to wake up on timer 650169695Skan lock()->wait(); 651169695Skan } 652169695Skan } 653169695Skan CompileTask* task = CompilationPolicy::policy()->select_task(this); 654169695Skan remove(task); 655169695Skan return task; 656169695Skan} 657169695Skan 658169695Skanvoid CompileQueue::remove(CompileTask* task) 659169695Skan{ 660169695Skan assert(lock()->owned_by_self(), "must own lock"); 661169695Skan if (task->prev() != NULL) { 662169695Skan task->prev()->set_next(task->next()); 663169695Skan } else { 664169695Skan // max is the first element 665169695Skan assert(task == _first, "Sanity"); 666169695Skan _first = task->next(); 667169695Skan } 668169695Skan 669169695Skan if (task->next() != NULL) { 670169695Skan task->next()->set_prev(task->prev()); 671169695Skan } else { 672169695Skan // max is the last element 673169695Skan assert(task == _last, "Sanity"); 674169695Skan _last = task->prev(); 675169695Skan } 676169695Skan --_size; 677169695Skan} 678169695Skan 679169695Skan// methods in the compile queue need to be marked as used on the stack 680169695Skan// so that they don't get reclaimed by Redefine Classes 681169695Skanvoid CompileQueue::mark_on_stack() { 682169695Skan CompileTask* task = _first; 683169695Skan while (task != NULL) { 684169695Skan task->mark_on_stack(); 685169695Skan task = task->next(); 686169695Skan } 687169695Skan} 688169695Skan 689169695Skan// ------------------------------------------------------------------ 690169695Skan// CompileQueue::print 691169695Skanvoid CompileQueue::print() { 692169695Skan tty->print_cr("Contents of %s", name()); 693169695Skan tty->print_cr("----------------------"); 694169695Skan CompileTask* task = _first; 695169695Skan while (task != NULL) { 696169695Skan task->print_line(); 697169695Skan task = task->next(); 698169695Skan } 699169695Skan tty->print_cr("----------------------"); 700169695Skan} 701169695Skan 702169695SkanCompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { 703169695Skan 704169695Skan _current_method[0] = '\0'; 705169695Skan _compile_type = CompileBroker::no_compile; 706169695Skan 707169695Skan if (UsePerfData) { 708169695Skan ResourceMark rm; 709169695Skan 710169695Skan // create the thread instance name space string - don't create an 711169695Skan // instance subspace if instance is -1 - keeps the adapterThread 712169695Skan // counters from having a ".0" namespace. 713169695Skan const char* thread_i = (instance == -1) ? thread_name : 714169695Skan PerfDataManager::name_space(thread_name, instance); 715169695Skan 716169695Skan 717169695Skan char* name = PerfDataManager::counter_name(thread_i, "method"); 718169695Skan _perf_current_method = 719169695Skan PerfDataManager::create_string_variable(SUN_CI, name, 720169695Skan cmname_buffer_length, 721169695Skan _current_method, CHECK); 722169695Skan 723169695Skan name = PerfDataManager::counter_name(thread_i, "type"); 724169695Skan _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, 725169695Skan PerfData::U_None, 726169695Skan (jlong)_compile_type, 727169695Skan CHECK); 728169695Skan 729169695Skan name = PerfDataManager::counter_name(thread_i, "time"); 730169695Skan _perf_time = PerfDataManager::create_counter(SUN_CI, name, 731169695Skan PerfData::U_Ticks, CHECK); 732169695Skan 733169695Skan name = PerfDataManager::counter_name(thread_i, "compiles"); 734169695Skan _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, 735169695Skan PerfData::U_Events, CHECK); 736169695Skan } 737169695Skan} 738169695Skan 739169695Skan// ------------------------------------------------------------------ 740169695Skan// CompileBroker::compilation_init 741169695Skan// 742169695Skan// Initialize the Compilation object 743169695Skanvoid CompileBroker::compilation_init() { 744169695Skan _last_method_compiled[0] = '\0'; 745169695Skan 746169695Skan#ifndef SHARK 747169695Skan // Set the interface to the current compiler(s). 748169695Skan int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); 749169695Skan int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); 750169695Skan#ifdef COMPILER1 751169695Skan if (c1_count > 0) { 752169695Skan _compilers[0] = new Compiler(); 753169695Skan } 754169695Skan#endif // COMPILER1 755169695Skan 756169695Skan#ifdef COMPILER2 757169695Skan if (c2_count > 0) { 758169695Skan _compilers[1] = new C2Compiler(); 759169695Skan } 760169695Skan#endif // COMPILER2 761169695Skan 762169695Skan#else // SHARK 763169695Skan int c1_count = 0; 764169695Skan int c2_count = 1; 765169695Skan 766169695Skan _compilers[1] = new SharkCompiler(); 767169695Skan#endif // SHARK 768169695Skan 769169695Skan // Initialize the CompileTask free list 770169695Skan _task_free_list = NULL; 771169695Skan 772169695Skan // Start the CompilerThreads 773169695Skan init_compiler_threads(c1_count, c2_count); 774169695Skan // totalTime performance counter is always created as it is required 775169695Skan // by the implementation of java.lang.management.CompilationMBean. 776169695Skan { 777169695Skan EXCEPTION_MARK; 778169695Skan _perf_total_compilation = 779169695Skan PerfDataManager::create_counter(JAVA_CI, "totalTime", 780169695Skan PerfData::U_Ticks, CHECK); 781169695Skan } 782169695Skan 783169695Skan 784169695Skan if (UsePerfData) { 785169695Skan 786169695Skan EXCEPTION_MARK; 787169695Skan 788169695Skan // create the jvmstat performance counters 789169695Skan _perf_osr_compilation = 790169695Skan PerfDataManager::create_counter(SUN_CI, "osrTime", 791169695Skan PerfData::U_Ticks, CHECK); 792169695Skan 793169695Skan _perf_standard_compilation = 794169695Skan PerfDataManager::create_counter(SUN_CI, "standardTime", 795169695Skan PerfData::U_Ticks, CHECK); 796169695Skan 797169695Skan _perf_total_bailout_count = 798169695Skan PerfDataManager::create_counter(SUN_CI, "totalBailouts", 799169695Skan PerfData::U_Events, CHECK); 800169695Skan 801169695Skan _perf_total_invalidated_count = 802169695Skan PerfDataManager::create_counter(SUN_CI, "totalInvalidates", 803169695Skan PerfData::U_Events, CHECK); 804169695Skan 805169695Skan _perf_total_compile_count = 806169695Skan PerfDataManager::create_counter(SUN_CI, "totalCompiles", 807169695Skan PerfData::U_Events, CHECK); 808169695Skan _perf_total_osr_compile_count = 809169695Skan PerfDataManager::create_counter(SUN_CI, "osrCompiles", 810169695Skan PerfData::U_Events, CHECK); 811169695Skan 812169695Skan _perf_total_standard_compile_count = 813169695Skan PerfDataManager::create_counter(SUN_CI, "standardCompiles", 814169695Skan PerfData::U_Events, CHECK); 815169695Skan 816169695Skan _perf_sum_osr_bytes_compiled = 817169695Skan PerfDataManager::create_counter(SUN_CI, "osrBytes", 818169695Skan PerfData::U_Bytes, CHECK); 819169695Skan 820169695Skan _perf_sum_standard_bytes_compiled = 821169695Skan PerfDataManager::create_counter(SUN_CI, "standardBytes", 822169695Skan PerfData::U_Bytes, CHECK); 823169695Skan 824169695Skan _perf_sum_nmethod_size = 825169695Skan PerfDataManager::create_counter(SUN_CI, "nmethodSize", 826169695Skan PerfData::U_Bytes, CHECK); 827169695Skan 828169695Skan _perf_sum_nmethod_code_size = 829169695Skan PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", 830169695Skan PerfData::U_Bytes, CHECK); 831169695Skan 832169695Skan _perf_last_method = 833169695Skan PerfDataManager::create_string_variable(SUN_CI, "lastMethod", 834169695Skan CompilerCounters::cmname_buffer_length, 835169695Skan "", CHECK); 836169695Skan 837169695Skan _perf_last_failed_method = 838169695Skan PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", 839169695Skan CompilerCounters::cmname_buffer_length, 840169695Skan "", CHECK); 841169695Skan 842169695Skan _perf_last_invalidated_method = 843169695Skan PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", 844169695Skan CompilerCounters::cmname_buffer_length, 845169695Skan "", CHECK); 846169695Skan 847169695Skan _perf_last_compile_type = 848169695Skan PerfDataManager::create_variable(SUN_CI, "lastType", 849169695Skan PerfData::U_None, 850169695Skan (jlong)CompileBroker::no_compile, 851169695Skan CHECK); 852169695Skan 853169695Skan _perf_last_compile_size = 854169695Skan PerfDataManager::create_variable(SUN_CI, "lastSize", 855169695Skan PerfData::U_Bytes, 856169695Skan (jlong)CompileBroker::no_compile, 857169695Skan CHECK); 858169695Skan 859169695Skan 860169695Skan _perf_last_failed_type = 861169695Skan PerfDataManager::create_variable(SUN_CI, "lastFailedType", 862169695Skan PerfData::U_None, 863169695Skan (jlong)CompileBroker::no_compile, 864169695Skan CHECK); 865169695Skan 866169695Skan _perf_last_invalidated_type = 867169695Skan PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", 868169695Skan PerfData::U_None, 869169695Skan (jlong)CompileBroker::no_compile, 870282152Spfg CHECK); 871169695Skan } 872169695Skan 873169695Skan _initialized = true; 874169695Skan} 875169695Skan 876282152Spfg 877169695Skan 878169695Skan// ------------------------------------------------------------------ 879169695Skan// CompileBroker::make_compiler_thread 880169695SkanCompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { 881169695Skan CompilerThread* compiler_thread = NULL; 882169695Skan 883169695Skan Klass* k = 884169695Skan SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), 885282152Spfg true, CHECK_0); 886169695Skan instanceKlassHandle klass (THREAD, k); 887169695Skan instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); 888169695Skan Handle string = java_lang_String::create_from_str(name, CHECK_0); 889169695Skan 890169695Skan // Initialize thread_oop to put it into the system threadGroup 891169695Skan Handle thread_group (THREAD, Universe::system_thread_group()); 892169695Skan JavaValue result(T_VOID); 893169695Skan JavaCalls::call_special(&result, thread_oop, 894169695Skan klass, 895169695Skan vmSymbols::object_initializer_name(), 896169695Skan vmSymbols::threadgroup_string_void_signature(), 897169695Skan thread_group, 898169695Skan string, 899169695Skan CHECK_0); 900169695Skan 901282152Spfg { 902282152Spfg MutexLocker mu(Threads_lock, THREAD); 903282152Spfg compiler_thread = new CompilerThread(queue, counters); 904282152Spfg // At this point the new CompilerThread data-races with this startup 905282152Spfg // thread (which I believe is the primoridal thread and NOT the VM 906282152Spfg // thread). This means Java bytecodes being executed at startup can 907282152Spfg // queue compile jobs which will run at whatever default priority the 908282152Spfg // newly created CompilerThread runs at. 909169695Skan 910169695Skan 911169695Skan // At this point it may be possible that no osthread was created for the 912169695Skan // JavaThread due to lack of memory. We would have to throw an exception 913169695Skan // in that case. However, since this must work and we do not allow 914169695Skan // exceptions anyway, check and abort if this fails. 915169695Skan 916169695Skan if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ 917169695Skan vm_exit_during_initialization("java.lang.OutOfMemoryError", 918169695Skan "unable to create new native thread"); 919169695Skan } 920169695Skan 921169695Skan java_lang_Thread::set_thread(thread_oop(), compiler_thread); 922169695Skan 923169695Skan // Note that this only sets the JavaThread _priority field, which by 924169695Skan // definition is limited to Java priorities and not OS priorities. 925169695Skan // The os-priority is set in the CompilerThread startup code itself 926169695Skan 927169695Skan java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); 928169695Skan 929169695Skan // Note that we cannot call os::set_priority because it expects Java 930169695Skan // priorities and we are *explicitly* using OS priorities so that it's 931169695Skan // possible to set the compiler thread priority higher than any Java 932169695Skan // thread. 933169695Skan 934169695Skan int native_prio = CompilerThreadPriority; 935169695Skan if (native_prio == -1) { 936169695Skan if (UseCriticalCompilerThreadPriority) { 937169695Skan native_prio = os::java_to_os_priority[CriticalPriority]; 938169695Skan } else { 939169695Skan native_prio = os::java_to_os_priority[NearMaxPriority]; 940169695Skan } 941169695Skan } 942169695Skan os::set_native_priority(compiler_thread, native_prio); 943169695Skan 944169695Skan java_lang_Thread::set_daemon(thread_oop()); 945169695Skan 946169695Skan compiler_thread->set_threadObj(thread_oop()); 947169695Skan Threads::add(compiler_thread); 948169695Skan Thread::start(compiler_thread); 949169695Skan } 950169695Skan 951169695Skan // Let go of Threads_lock before yielding 952169695Skan os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) 953169695Skan 954169695Skan return compiler_thread; 955169695Skan} 956169695Skan 957169695Skan 958169695Skan// ------------------------------------------------------------------ 959169695Skan// CompileBroker::init_compiler_threads 960169695Skan// 961169695Skan// Initialize the compilation queue 962169695Skanvoid CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { 963169695Skan EXCEPTION_MARK; 964169695Skan#if !defined(ZERO) && !defined(SHARK) && !defined(PPC64) 965169695Skan assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); 966169695Skan#endif // !ZERO && !SHARK 967169695Skan if (c2_compiler_count > 0) { 968169695Skan _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); 969169695Skan } 970169695Skan if (c1_compiler_count > 0) { 971169695Skan _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); 972169695Skan } 973169695Skan 974169695Skan int compiler_count = c1_compiler_count + c2_compiler_count; 975169695Skan 976169695Skan _method_threads = 977169695Skan new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); 978169695Skan 979169695Skan char name_buffer[256]; 980169695Skan for (int i = 0; i < c2_compiler_count; i++) { 981169695Skan // Create a name for our thread. 982169695Skan sprintf(name_buffer, "C2 CompilerThread%d", i); 983169695Skan CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); 984169695Skan CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK); 985169695Skan _method_threads->append(new_thread); 986169695Skan } 987169695Skan 988169695Skan for (int i = c2_compiler_count; i < compiler_count; i++) { 989169695Skan // Create a name for our thread. 990169695Skan sprintf(name_buffer, "C1 CompilerThread%d", i); 991169695Skan CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); 992169695Skan CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK); 993169695Skan _method_threads->append(new_thread); 994169695Skan } 995169695Skan 996169695Skan if (UsePerfData) { 997169695Skan PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, 998169695Skan compiler_count, CHECK); 999169695Skan } 1000169695Skan} 1001169695Skan 1002169695Skan 1003169695Skan// Set the methods on the stack as on_stack so that redefine classes doesn't 1004169695Skan// reclaim them 1005169695Skanvoid CompileBroker::mark_on_stack() { 1006169695Skan if (_c2_method_queue != NULL) { 1007169695Skan _c2_method_queue->mark_on_stack(); 1008169695Skan } 1009169695Skan if (_c1_method_queue != NULL) { 1010169695Skan _c1_method_queue->mark_on_stack(); 1011169695Skan } 1012169695Skan} 1013282152Spfg 1014282152Spfg// ------------------------------------------------------------------ 1015282152Spfg// CompileBroker::is_idle 1016282152Spfgbool CompileBroker::is_idle() { 1017282152Spfg if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) { 1018282152Spfg return false; 1019169695Skan } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) { 1020169695Skan return false; 1021169695Skan } else { 1022282152Spfg int num_threads = _method_threads->length(); 1023282152Spfg for (int i=0; i<num_threads; i++) { 1024169695Skan if (_method_threads->at(i)->task() != NULL) { 1025169695Skan return false; 1026169695Skan } 1027169695Skan } 1028169695Skan 1029169695Skan // No pending or active compilations. 1030169695Skan return true; 1031282152Spfg } 1032282152Spfg} 1033282152Spfg 1034169695Skan 1035169695Skan// ------------------------------------------------------------------ 1036169695Skan// CompileBroker::compile_method 1037169695Skan// 1038169695Skan// Request compilation of a method. 1039169695Skanvoid CompileBroker::compile_method_base(methodHandle method, 1040169695Skan int osr_bci, 1041169695Skan int comp_level, 1042282152Spfg methodHandle hot_method, 1043169695Skan int hot_count, 1044169695Skan const char* comment, 1045169695Skan Thread* thread) { 1046169695Skan // do nothing if compiler thread(s) is not available 1047169695Skan if (!_initialized ) { 1048169695Skan return; 1049169695Skan } 1050169695Skan 1051169695Skan guarantee(!method->is_abstract(), "cannot compile abstract methods"); 1052169695Skan assert(method->method_holder()->oop_is_instance(), 1053169695Skan "sanity check"); 1054169695Skan assert(!method->method_holder()->is_not_initialized(), 1055169695Skan "method holder must be initialized"); 1056169695Skan assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); 1057169695Skan 1058169695Skan if (CIPrintRequests) { 1059169695Skan tty->print("request: "); 1060169695Skan method->print_short_name(tty); 1061169695Skan if (osr_bci != InvocationEntryBci) { 1062169695Skan tty->print(" osr_bci: %d", osr_bci); 1063169695Skan } 1064169695Skan tty->print(" comment: %s count: %d", comment, hot_count); 1065169695Skan if (!hot_method.is_null()) { 1066169695Skan tty->print(" hot: "); 1067169695Skan if (hot_method() != method()) { 1068169695Skan hot_method->print_short_name(tty); 1069169695Skan } else { 1070169695Skan tty->print("yes"); 1071169695Skan } 1072169695Skan } 1073169695Skan tty->cr(); 1074169695Skan } 1075169695Skan 1076169695Skan // A request has been made for compilation. Before we do any 1077169695Skan // real work, check to see if the method has been compiled 1078169695Skan // in the meantime with a definitive result. 1079169695Skan if (compilation_is_complete(method, osr_bci, comp_level)) { 1080169695Skan return; 1081169695Skan } 1082169695Skan 1083169695Skan#ifndef PRODUCT 1084169695Skan if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { 1085169695Skan if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { 1086169695Skan // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. 1087169695Skan return; 1088169695Skan } 1089169695Skan } 1090169695Skan#endif 1091169695Skan 1092169695Skan // If this method is already in the compile queue, then 1093169695Skan // we do not block the current thread. 1094169695Skan if (compilation_is_in_queue(method, osr_bci)) { 1095169695Skan // We may want to decay our counter a bit here to prevent 1096169695Skan // multiple denied requests for compilation. This is an 1097169695Skan // open compilation policy issue. Note: The other possibility, 1098169695Skan // in the case that this is a blocking compile request, is to have 1099169695Skan // all subsequent blocking requesters wait for completion of 1100169695Skan // ongoing compiles. Note that in this case we'll need a protocol 1101169695Skan // for freeing the associated compile tasks. [Or we could have 1102169695Skan // a single static monitor on which all these waiters sleep.] 1103169695Skan return; 1104169695Skan } 1105169695Skan 1106169695Skan // If the requesting thread is holding the pending list lock 1107169695Skan // then we just return. We can't risk blocking while holding 1108169695Skan // the pending list lock or a 3-way deadlock may occur 1109169695Skan // between the reference handler thread, a GC (instigated 1110169695Skan // by a compiler thread), and compiled method registration. 1111169695Skan if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { 1112169695Skan return; 1113169695Skan } 1114169695Skan 1115169695Skan // Outputs from the following MutexLocker block: 1116169695Skan CompileTask* task = NULL; 1117169695Skan bool blocking = false; 1118169695Skan CompileQueue* queue = compile_queue(comp_level); 1119169695Skan 1120169695Skan // Acquire our lock. 1121169695Skan { 1122169695Skan MutexLocker locker(queue->lock(), thread); 1123169695Skan 1124169695Skan // Make sure the method has not slipped into the queues since 1125169695Skan // last we checked; note that those checks were "fast bail-outs". 1126169695Skan // Here we need to be more careful, see 14012000 below. 1127169695Skan if (compilation_is_in_queue(method, osr_bci)) { 1128169695Skan return; 1129169695Skan } 1130169695Skan 1131169695Skan // We need to check again to see if the compilation has 1132169695Skan // completed. A previous compilation may have registered 1133169695Skan // some result. 1134169695Skan if (compilation_is_complete(method, osr_bci, comp_level)) { 1135169695Skan return; 1136169695Skan } 1137169695Skan 1138169695Skan // We now know that this compilation is not pending, complete, 1139169695Skan // or prohibited. Assign a compile_id to this compilation 1140169695Skan // and check to see if it is in our [Start..Stop) range. 1141169695Skan uint compile_id = assign_compile_id(method, osr_bci); 1142169695Skan if (compile_id == 0) { 1143169695Skan // The compilation falls outside the allowed range. 1144169695Skan return; 1145169695Skan } 1146169695Skan 1147169695Skan // Should this thread wait for completion of the compile? 1148169695Skan blocking = is_compile_blocking(method, osr_bci); 1149169695Skan 1150169695Skan // We will enter the compilation in the queue. 1151169695Skan // 14012000: Note that this sets the queued_for_compile bits in 1152169695Skan // the target method. We can now reason that a method cannot be 1153169695Skan // queued for compilation more than once, as follows: 1154169695Skan // Before a thread queues a task for compilation, it first acquires 1155169695Skan // the compile queue lock, then checks if the method's queued bits 1156169695Skan // are set or it has already been compiled. Thus there can not be two 1157169695Skan // instances of a compilation task for the same method on the 1158169695Skan // compilation queue. Consider now the case where the compilation 1159169695Skan // thread has already removed a task for that method from the queue 1160169695Skan // and is in the midst of compiling it. In this case, the 1161169695Skan // queued_for_compile bits must be set in the method (and these 1162169695Skan // will be visible to the current thread, since the bits were set 1163169695Skan // under protection of the compile queue lock, which we hold now. 1164169695Skan // When the compilation completes, the compiler thread first sets 1165169695Skan // the compilation result and then clears the queued_for_compile 1166169695Skan // bits. Neither of these actions are protected by a barrier (or done 1167169695Skan // under the protection of a lock), so the only guarantee we have 1168169695Skan // (on machines with TSO (Total Store Order)) is that these values 1169169695Skan // will update in that order. As a result, the only combinations of 1170169695Skan // these bits that the current thread will see are, in temporal order: 1171169695Skan // <RESULT, QUEUE> : 1172169695Skan // <0, 1> : in compile queue, but not yet compiled 1173169695Skan // <1, 1> : compiled but queue bit not cleared 1174169695Skan // <1, 0> : compiled and queue bit cleared 1175169695Skan // Because we first check the queue bits then check the result bits, 1176169695Skan // we are assured that we cannot introduce a duplicate task. 1177169695Skan // Note that if we did the tests in the reverse order (i.e. check 1178169695Skan // result then check queued bit), we could get the result bit before 1179169695Skan // the compilation completed, and the queue bit after the compilation 1180169695Skan // completed, and end up introducing a "duplicate" (redundant) task. 1181169695Skan // In that case, the compiler thread should first check if a method 1182169695Skan // has already been compiled before trying to compile it. 1183169695Skan // NOTE: in the event that there are multiple compiler threads and 1184169695Skan // there is de-optimization/recompilation, things will get hairy, 1185169695Skan // and in that case it's best to protect both the testing (here) of 1186169695Skan // these bits, and their updating (here and elsewhere) under a 1187169695Skan // common lock. 1188169695Skan task = create_compile_task(queue, 1189169695Skan compile_id, method, 1190169695Skan osr_bci, comp_level, 1191169695Skan hot_method, hot_count, comment, 1192169695Skan blocking); 1193169695Skan } 1194169695Skan 1195169695Skan if (blocking) { 1196169695Skan wait_for_completion(task); 1197169695Skan } 1198169695Skan} 1199169695Skan 1200169695Skan 1201169695Skannmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, 1202169695Skan int comp_level, 1203169695Skan methodHandle hot_method, int hot_count, 1204169695Skan const char* comment, Thread* THREAD) { 1205169695Skan // make sure arguments make sense 1206169695Skan assert(method->method_holder()->oop_is_instance(), "not an instance method"); 1207169695Skan assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); 1208169695Skan assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); 1209169695Skan assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); 1210169695Skan // allow any levels for WhiteBox 1211169695Skan assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); 1212169695Skan // return quickly if possible 1213169695Skan 1214169695Skan // lock, make sure that the compilation 1215169695Skan // isn't prohibited in a straightforward way. 1216169695Skan AbstractCompiler *comp = CompileBroker::compiler(comp_level); 1217169695Skan if (comp == NULL || !comp->can_compile_method(method) || 1218169695Skan compilation_is_prohibited(method, osr_bci, comp_level)) { 1219169695Skan return NULL; 1220169695Skan } 1221169695Skan 1222169695Skan if (osr_bci == InvocationEntryBci) { 1223169695Skan // standard compilation 1224169695Skan nmethod* method_code = method->code(); 1225169695Skan if (method_code != NULL) { 1226169695Skan if (compilation_is_complete(method, osr_bci, comp_level)) { 1227169695Skan return method_code; 1228169695Skan } 1229169695Skan } 1230169695Skan if (method->is_not_compilable(comp_level)) return NULL; 1231169695Skan 1232169695Skan if (UseCodeCacheFlushing) { 1233169695Skan nmethod* saved = CodeCache::reanimate_saved_code(method()); 1234169695Skan if (saved != NULL) { 1235169695Skan method->set_code(method, saved); 1236169695Skan return saved; 1237169695Skan } 1238169695Skan } 1239169695Skan 1240169695Skan } else { 1241169695Skan // osr compilation 1242169695Skan#ifndef TIERED 1243169695Skan // seems like an assert of dubious value 1244169695Skan assert(comp_level == CompLevel_highest_tier, 1245169695Skan "all OSR compiles are assumed to be at a single compilation lavel"); 1246169695Skan#endif // TIERED 1247169695Skan // We accept a higher level osr method 1248169695Skan nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); 1249169695Skan if (nm != NULL) return nm; 1250169695Skan if (method->is_not_osr_compilable(comp_level)) return NULL; 1251169695Skan } 1252169695Skan 1253169695Skan assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); 1254169695Skan // some prerequisites that are compiler specific 1255169695Skan if (comp->is_c2() || comp->is_shark()) { 1256169695Skan method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); 1257169695Skan // Resolve all classes seen in the signature of the method 1258169695Skan // we are compiling. 1259169695Skan Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); 1260169695Skan } 1261169695Skan 1262169695Skan // If the method is native, do the lookup in the thread requesting 1263169695Skan // the compilation. Native lookups can load code, which is not 1264169695Skan // permitted during compilation. 1265169695Skan // 1266169695Skan // Note: A native method implies non-osr compilation which is 1267169695Skan // checked with an assertion at the entry of this method. 1268169695Skan if (method->is_native() && !method->is_method_handle_intrinsic()) { 1269169695Skan bool in_base_library; 1270169695Skan address adr = NativeLookup::lookup(method, in_base_library, THREAD); 1271169695Skan if (HAS_PENDING_EXCEPTION) { 1272169695Skan // In case of an exception looking up the method, we just forget 1273169695Skan // about it. The interpreter will kick-in and throw the exception. 1274169695Skan method->set_not_compilable(); // implies is_not_osr_compilable() 1275169695Skan CLEAR_PENDING_EXCEPTION; 1276169695Skan return NULL; 1277169695Skan } 1278169695Skan assert(method->has_native_function(), "must have native code by now"); 1279169695Skan } 1280169695Skan 1281169695Skan // RedefineClasses() has replaced this method; just return 1282169695Skan if (method->is_old()) { 1283169695Skan return NULL; 1284169695Skan } 1285169695Skan 1286169695Skan // JVMTI -- post_compile_event requires jmethod_id() that may require 1287169695Skan // a lock the compiling thread can not acquire. Prefetch it here. 1288169695Skan if (JvmtiExport::should_post_compiled_method_load()) { 1289169695Skan method->jmethod_id(); 1290169695Skan } 1291169695Skan 1292169695Skan // If the compiler is shut off due to code cache getting full 1293169695Skan // fail out now so blocking compiles dont hang the java thread 1294169695Skan if (!should_compile_new_jobs()) { 1295169695Skan CompilationPolicy::policy()->delay_compilation(method()); 1296169695Skan return NULL; 1297169695Skan } 1298169695Skan 1299169695Skan // do the compilation 1300169695Skan if (method->is_native()) { 1301169695Skan if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { 1302169695Skan // Acquire our lock. 1303169695Skan int compile_id; 1304169695Skan { 1305169695Skan MutexLocker locker(MethodCompileQueue_lock, THREAD); 1306169695Skan compile_id = assign_compile_id(method, standard_entry_bci); 1307169695Skan } 1308169695Skan (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); 1309169695Skan } else { 1310169695Skan return NULL; 1311169695Skan } 1312169695Skan } else { 1313169695Skan compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); 1314169695Skan } 1315169695Skan 1316169695Skan // return requested nmethod 1317169695Skan // We accept a higher level osr method 1318169695Skan return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); 1319169695Skan} 1320169695Skan 1321169695Skan 1322169695Skan// ------------------------------------------------------------------ 1323169695Skan// CompileBroker::compilation_is_complete 1324169695Skan// 1325169695Skan// See if compilation of this method is already complete. 1326169695Skanbool CompileBroker::compilation_is_complete(methodHandle method, 1327169695Skan int osr_bci, 1328169695Skan int comp_level) { 1329169695Skan bool is_osr = (osr_bci != standard_entry_bci); 1330169695Skan if (is_osr) { 1331169695Skan if (method->is_not_osr_compilable(comp_level)) { 1332169695Skan return true; 1333169695Skan } else { 1334169695Skan nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); 1335169695Skan return (result != NULL); 1336169695Skan } 1337169695Skan } else { 1338169695Skan if (method->is_not_compilable(comp_level)) { 1339169695Skan return true; 1340169695Skan } else { 1341169695Skan nmethod* result = method->code(); 1342169695Skan if (result == NULL) return false; 1343169695Skan return comp_level == result->comp_level(); 1344169695Skan } 1345169695Skan } 1346169695Skan} 1347169695Skan 1348169695Skan 1349169695Skan// ------------------------------------------------------------------ 1350169695Skan// CompileBroker::compilation_is_in_queue 1351169695Skan// 1352169695Skan// See if this compilation is already requested. 1353169695Skan// 1354169695Skan// Implementation note: there is only a single "is in queue" bit 1355169695Skan// for each method. This means that the check below is overly 1356169695Skan// conservative in the sense that an osr compilation in the queue 1357169695Skan// will block a normal compilation from entering the queue (and vice 1358169695Skan// versa). This can be remedied by a full queue search to disambiguate 1359169695Skan// cases. If it is deemed profitible, this may be done. 1360169695Skanbool CompileBroker::compilation_is_in_queue(methodHandle method, 1361169695Skan int osr_bci) { 1362169695Skan return method->queued_for_compilation(); 1363169695Skan} 1364169695Skan 1365169695Skan// ------------------------------------------------------------------ 1366169695Skan// CompileBroker::compilation_is_prohibited 1367169695Skan// 1368169695Skan// See if this compilation is not allowed. 1369169695Skanbool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { 1370169695Skan bool is_native = method->is_native(); 1371169695Skan // Some compilers may not support the compilation of natives. 1372169695Skan AbstractCompiler *comp = compiler(comp_level); 1373169695Skan if (is_native && 1374169695Skan (!CICompileNatives || comp == NULL || !comp->supports_native())) { 1375169695Skan method->set_not_compilable_quietly(comp_level); 1376169695Skan return true; 1377169695Skan } 1378169695Skan 1379169695Skan bool is_osr = (osr_bci != standard_entry_bci); 1380169695Skan // Some compilers may not support on stack replacement. 1381169695Skan if (is_osr && 1382169695Skan (!CICompileOSR || comp == NULL || !comp->supports_osr())) { 1383169695Skan method->set_not_osr_compilable(comp_level); 1384169695Skan return true; 1385169695Skan } 1386169695Skan 1387169695Skan // The method may be explicitly excluded by the user. 1388169695Skan bool quietly; 1389169695Skan if (CompilerOracle::should_exclude(method, quietly)) { 1390169695Skan if (!quietly) { 1391169695Skan // This does not happen quietly... 1392169695Skan ResourceMark rm; 1393169695Skan tty->print("### Excluding %s:%s", 1394169695Skan method->is_native() ? "generation of native wrapper" : "compile", 1395169695Skan (method->is_static() ? " static" : "")); 1396169695Skan method->print_short_name(tty); 1397169695Skan tty->cr(); 1398169695Skan } 1399169695Skan method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); 1400169695Skan } 1401169695Skan 1402169695Skan return false; 1403169695Skan} 1404169695Skan 1405169695Skan 1406169695Skan// ------------------------------------------------------------------ 1407169695Skan// CompileBroker::assign_compile_id 1408169695Skan// 1409169695Skan// Assign a serialized id number to this compilation request. If the 1410169695Skan// number falls out of the allowed range, return a 0. OSR 1411169695Skan// compilations may be numbered separately from regular compilations 1412169695Skan// if certain debugging flags are used. 1413169695Skanuint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { 1414169695Skan assert(MethodCompileQueue_lock->owner() == Thread::current(), 1415169695Skan "must hold the compilation queue lock"); 1416169695Skan bool is_osr = (osr_bci != standard_entry_bci); 1417169695Skan uint id; 1418169695Skan if (CICountOSR && is_osr) { 1419169695Skan id = ++_osr_compilation_id; 1420169695Skan if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { 1421169695Skan return id; 1422169695Skan } 1423169695Skan } else { 1424169695Skan id = ++_compilation_id; 1425169695Skan if ((uint)CIStart <= id && id < (uint)CIStop) { 1426169695Skan return id; 1427169695Skan } 1428169695Skan } 1429169695Skan 1430169695Skan // Method was not in the appropriate compilation range. 1431169695Skan method->set_not_compilable_quietly(); 1432169695Skan return 0; 1433169695Skan} 1434169695Skan 1435169695Skan 1436169695Skan// ------------------------------------------------------------------ 1437169695Skan// CompileBroker::is_compile_blocking 1438169695Skan// 1439169695Skan// Should the current thread be blocked until this compilation request 1440169695Skan// has been fulfilled? 1441169695Skanbool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { 1442169695Skan assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); 1443169695Skan return !BackgroundCompilation; 1444169695Skan} 1445169695Skan 1446169695Skan 1447169695Skan// ------------------------------------------------------------------ 1448169695Skan// CompileBroker::preload_classes 1449169695Skanvoid CompileBroker::preload_classes(methodHandle method, TRAPS) { 1450169695Skan // Move this code over from c1_Compiler.cpp 1451169695Skan ShouldNotReachHere(); 1452169695Skan} 1453169695Skan 1454169695Skan 1455169695Skan// ------------------------------------------------------------------ 1456169695Skan// CompileBroker::create_compile_task 1457169695Skan// 1458169695Skan// Create a CompileTask object representing the current request for 1459169695Skan// compilation. Add this task to the queue. 1460169695SkanCompileTask* CompileBroker::create_compile_task(CompileQueue* queue, 1461169695Skan int compile_id, 1462169695Skan methodHandle method, 1463169695Skan int osr_bci, 1464169695Skan int comp_level, 1465169695Skan methodHandle hot_method, 1466169695Skan int hot_count, 1467169695Skan const char* comment, 1468169695Skan bool blocking) { 1469169695Skan CompileTask* new_task = allocate_task(); 1470169695Skan new_task->initialize(compile_id, method, osr_bci, comp_level, 1471169695Skan hot_method, hot_count, comment, 1472169695Skan blocking); 1473169695Skan queue->add(new_task); 1474169695Skan return new_task; 1475169695Skan} 1476169695Skan 1477169695Skan 1478169695Skan// ------------------------------------------------------------------ 1479169695Skan// CompileBroker::allocate_task 1480169695Skan// 1481169695Skan// Allocate a CompileTask, from the free list if possible. 1482169695SkanCompileTask* CompileBroker::allocate_task() { 1483169695Skan MutexLocker locker(CompileTaskAlloc_lock); 1484169695Skan CompileTask* task = NULL; 1485169695Skan if (_task_free_list != NULL) { 1486169695Skan task = _task_free_list; 1487169695Skan _task_free_list = task->next(); 1488169695Skan task->set_next(NULL); 1489169695Skan } else { 1490169695Skan task = new CompileTask(); 1491169695Skan task->set_next(NULL); 1492169695Skan } 1493169695Skan return task; 1494169695Skan} 1495169695Skan 1496169695Skan 1497169695Skan// ------------------------------------------------------------------ 1498169695Skan// CompileBroker::free_task 1499169695Skan// 1500169695Skan// Add a task to the free list. 1501169695Skanvoid CompileBroker::free_task(CompileTask* task) { 1502169695Skan MutexLocker locker(CompileTaskAlloc_lock); 1503169695Skan task->free(); 1504169695Skan task->set_next(_task_free_list); 1505169695Skan _task_free_list = task; 1506169695Skan} 1507169695Skan 1508169695Skan 1509169695Skan// ------------------------------------------------------------------ 1510169695Skan// CompileBroker::wait_for_completion 1511169695Skan// 1512169695Skan// Wait for the given method CompileTask to complete. 1513169695Skanvoid CompileBroker::wait_for_completion(CompileTask* task) { 1514169695Skan if (CIPrintCompileQueue) { 1515169695Skan tty->print_cr("BLOCKING FOR COMPILE"); 1516169695Skan } 1517169695Skan 1518169695Skan assert(task->is_blocking(), "can only wait on blocking task"); 1519169695Skan 1520169695Skan JavaThread *thread = JavaThread::current(); 1521169695Skan thread->set_blocked_on_compilation(true); 1522169695Skan 1523169695Skan methodHandle method(thread, task->method()); 1524169695Skan { 1525169695Skan MutexLocker waiter(task->lock(), thread); 1526169695Skan 1527169695Skan while (!task->is_complete()) 1528169695Skan task->lock()->wait(); 1529169695Skan } 1530169695Skan // It is harmless to check this status without the lock, because 1531169695Skan // completion is a stable property (until the task object is recycled). 1532169695Skan assert(task->is_complete(), "Compilation should have completed"); 1533169695Skan assert(task->code_handle() == NULL, "must be reset"); 1534169695Skan 1535169695Skan thread->set_blocked_on_compilation(false); 1536169695Skan 1537169695Skan // By convention, the waiter is responsible for recycling a 1538169695Skan // blocking CompileTask. Since there is only one waiter ever 1539169695Skan // waiting on a CompileTask, we know that no one else will 1540169695Skan // be using this CompileTask; we can free it. 1541169695Skan free_task(task); 1542169695Skan} 1543169695Skan 1544169695Skan// ------------------------------------------------------------------ 1545169695Skan// CompileBroker::compiler_thread_loop 1546169695Skan// 1547169695Skan// The main loop run by a CompilerThread. 1548169695Skanvoid CompileBroker::compiler_thread_loop() { 1549169695Skan CompilerThread* thread = CompilerThread::current(); 1550169695Skan CompileQueue* queue = thread->queue(); 1551169695Skan 1552169695Skan // For the thread that initializes the ciObjectFactory 1553169695Skan // this resource mark holds all the shared objects 1554169695Skan ResourceMark rm; 1555169695Skan 1556169695Skan // First thread to get here will initialize the compiler interface 1557169695Skan 1558169695Skan if (!ciObjectFactory::is_initialized()) { 1559169695Skan ASSERT_IN_VM; 1560169695Skan MutexLocker only_one (CompileThread_lock, thread); 1561169695Skan if (!ciObjectFactory::is_initialized()) { 1562169695Skan ciObjectFactory::initialize(); 1563169695Skan } 1564169695Skan } 1565169695Skan 1566169695Skan // Open a log. 1567169695Skan if (LogCompilation) { 1568169695Skan init_compiler_thread_log(); 1569169695Skan } 1570169695Skan CompileLog* log = thread->log(); 1571169695Skan if (log != NULL) { 1572169695Skan log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", 1573169695Skan thread->name(), 1574169695Skan os::current_thread_id(), 1575169695Skan os::current_process_id()); 1576169695Skan log->stamp(); 1577169695Skan log->end_elem(); 1578169695Skan } 1579169695Skan 1580169695Skan while (true) { 1581169695Skan { 1582169695Skan // We need this HandleMark to avoid leaking VM handles. 1583169695Skan HandleMark hm(thread); 1584169695Skan 1585169695Skan if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { 1586169695Skan // the code cache is really full 1587169695Skan handle_full_code_cache(); 1588169695Skan } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { 1589169695Skan // Attempt to start cleaning the code cache while there is still a little headroom 1590169695Skan NMethodSweeper::handle_full_code_cache(false); 1591169695Skan } 1592169695Skan 1593169695Skan CompileTask* task = queue->get(); 1594169695Skan 1595169695Skan // Give compiler threads an extra quanta. They tend to be bursty and 1596169695Skan // this helps the compiler to finish up the job. 1597169695Skan if( CompilerThreadHintNoPreempt ) 1598169695Skan os::hint_no_preempt(); 1599169695Skan 1600169695Skan // trace per thread time and compile statistics 1601169695Skan CompilerCounters* counters = ((CompilerThread*)thread)->counters(); 1602169695Skan PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); 1603169695Skan 1604169695Skan // Assign the task to the current thread. Mark this compilation 1605169695Skan // thread as active for the profiler. 1606169695Skan CompileTaskWrapper ctw(task); 1607169695Skan nmethodLocker result_handle; // (handle for the nmethod produced by this task) 1608169695Skan task->set_code_handle(&result_handle); 1609169695Skan methodHandle method(thread, task->method()); 1610169695Skan 1611169695Skan // Never compile a method if breakpoints are present in it 1612169695Skan if (method()->number_of_breakpoints() == 0) { 1613169695Skan // Compile the method. 1614169695Skan if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { 1615169695Skan#ifdef COMPILER1 1616169695Skan // Allow repeating compilations for the purpose of benchmarking 1617169695Skan // compile speed. This is not useful for customers. 1618169695Skan if (CompilationRepeat != 0) { 1619169695Skan int compile_count = CompilationRepeat; 1620169695Skan while (compile_count > 0) { 1621169695Skan invoke_compiler_on_method(task); 1622169695Skan nmethod* nm = method->code(); 1623169695Skan if (nm != NULL) { 1624169695Skan nm->make_zombie(); 1625169695Skan method->clear_code(); 1626169695Skan } 1627169695Skan compile_count--; 1628169695Skan } 1629169695Skan } 1630169695Skan#endif /* COMPILER1 */ 1631169695Skan invoke_compiler_on_method(task); 1632169695Skan } else { 1633169695Skan // After compilation is disabled, remove remaining methods from queue 1634169695Skan method->clear_queued_for_compilation(); 1635169695Skan } 1636169695Skan } 1637169695Skan } 1638169695Skan } 1639169695Skan} 1640169695Skan 1641169695Skan 1642169695Skan// ------------------------------------------------------------------ 1643169695Skan// CompileBroker::init_compiler_thread_log 1644169695Skan// 1645169695Skan// Set up state required by +LogCompilation. 1646169695Skanvoid CompileBroker::init_compiler_thread_log() { 1647169695Skan CompilerThread* thread = CompilerThread::current(); 1648169695Skan char file_name[4*K]; 1649169695Skan FILE* fp = NULL; 1650169695Skan intx thread_id = os::current_thread_id(); 1651169695Skan for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { 1652169695Skan const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); 1653169695Skan if (dir == NULL) { 1654169695Skan jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", 1655169695Skan thread_id, os::current_process_id()); 1656169695Skan } else { 1657169695Skan jio_snprintf(file_name, sizeof(file_name), 1658169695Skan "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, 1659169695Skan os::file_separator(), thread_id, os::current_process_id()); 1660169695Skan } 1661169695Skan 1662169695Skan fp = fopen(file_name, "at"); 1663169695Skan if (fp != NULL) { 1664169695Skan if (LogCompilation && Verbose) { 1665169695Skan tty->print_cr("Opening compilation log %s", file_name); 1666169695Skan } 1667169695Skan CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); 1668169695Skan thread->init_log(log); 1669169695Skan 1670169695Skan if (xtty != NULL) { 1671169695Skan ttyLocker ttyl; 1672169695Skan // Record any per thread log files 1673169695Skan xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file_name); 1674169695Skan } 1675169695Skan return; 1676169695Skan } 1677169695Skan } 1678169695Skan warning("Cannot open log file: %s", file_name); 1679169695Skan} 1680169695Skan 1681169695Skan// ------------------------------------------------------------------ 1682169695Skan// CompileBroker::set_should_block 1683169695Skan// 1684169695Skan// Set _should_block. 1685169695Skan// Call this from the VM, with Threads_lock held and a safepoint requested. 1686169695Skanvoid CompileBroker::set_should_block() { 1687169695Skan assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); 1688169695Skan assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); 1689169695Skan#ifndef PRODUCT 1690169695Skan if (PrintCompilation && (Verbose || WizardMode)) 1691169695Skan tty->print_cr("notifying compiler thread pool to block"); 1692282152Spfg#endif 1693169695Skan _should_block = true; 1694169695Skan} 1695169695Skan 1696169695Skan// ------------------------------------------------------------------ 1697169695Skan// CompileBroker::maybe_block 1698169695Skan// 1699169695Skan// Call this from the compiler at convenient points, to poll for _should_block. 1700169695Skanvoid CompileBroker::maybe_block() { 1701169695Skan if (_should_block) { 1702169695Skan#ifndef PRODUCT 1703169695Skan if (PrintCompilation && (Verbose || WizardMode)) 1704169695Skan tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); 1705169695Skan#endif 1706169695Skan ThreadInVMfromNative tivfn(JavaThread::current()); 1707169695Skan } 1708169695Skan} 1709169695Skan 1710169695Skan// wrapper for CodeCache::print_summary() 1711169695Skanstatic void codecache_print(bool detailed) 1712169695Skan{ 1713169695Skan ResourceMark rm; 1714169695Skan stringStream s; 1715169695Skan // Dump code cache into a buffer before locking the tty, 1716169695Skan { 1717169695Skan MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1718169695Skan CodeCache::print_summary(&s, detailed); 1719169695Skan } 1720169695Skan ttyLocker ttyl; 1721169695Skan tty->print_cr(s.as_string()); 1722169695Skan} 1723169695Skan 1724169695Skan// ------------------------------------------------------------------ 1725169695Skan// CompileBroker::invoke_compiler_on_method 1726169695Skan// 1727169695Skan// Compile a method. 1728169695Skan// 1729169695Skanvoid CompileBroker::invoke_compiler_on_method(CompileTask* task) { 1730169695Skan if (PrintCompilation) { 1731169695Skan ResourceMark rm; 1732169695Skan task->print_line(); 1733169695Skan } 1734169695Skan elapsedTimer time; 1735169695Skan 1736169695Skan CompilerThread* thread = CompilerThread::current(); 1737169695Skan ResourceMark rm(thread); 1738169695Skan 1739169695Skan if (LogEvents) { 1740169695Skan _compilation_log->log_compile(thread, task); 1741169695Skan } 1742169695Skan 1743169695Skan // Common flags. 1744169695Skan uint compile_id = task->compile_id(); 1745169695Skan int osr_bci = task->osr_bci(); 1746169695Skan bool is_osr = (osr_bci != standard_entry_bci); 1747169695Skan bool should_log = (thread->log() != NULL); 1748169695Skan bool should_break = false; 1749169695Skan int task_level = task->comp_level(); 1750169695Skan { 1751169695Skan // create the handle inside it's own block so it can't 1752169695Skan // accidentally be referenced once the thread transitions to 1753169695Skan // native. The NoHandleMark before the transition should catch 1754169695Skan // any cases where this occurs in the future. 1755169695Skan methodHandle method(thread, task->method()); 1756169695Skan should_break = check_break_at(method, compile_id, is_osr); 1757169695Skan if (should_log && !CompilerOracle::should_log(method)) { 1758169695Skan should_log = false; 1759169695Skan } 1760169695Skan assert(!method->is_native(), "no longer compile natives"); 1761169695Skan 1762169695Skan // Save information about this method in case of failure. 1763169695Skan set_last_compile(thread, method, is_osr, task_level); 1764169695Skan 1765169695Skan DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); 1766169695Skan } 1767169695Skan 1768169695Skan // Allocate a new set of JNI handles. 1769169695Skan push_jni_handle_block(); 1770169695Skan Method* target_handle = task->method(); 1771169695Skan int compilable = ciEnv::MethodCompilable; 1772169695Skan { 1773169695Skan int system_dictionary_modification_counter; 1774169695Skan { 1775169695Skan MutexLocker locker(Compile_lock, thread); 1776169695Skan system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); 1777169695Skan } 1778169695Skan 1779169695Skan NoHandleMark nhm; 1780169695Skan ThreadToNativeFromVM ttn(thread); 1781169695Skan 1782169695Skan ciEnv ci_env(task, system_dictionary_modification_counter); 1783169695Skan if (should_break) { 1784169695Skan ci_env.set_break_at_compile(true); 1785169695Skan } 1786169695Skan if (should_log) { 1787169695Skan ci_env.set_log(thread->log()); 1788169695Skan } 1789169695Skan assert(thread->env() == &ci_env, "set by ci_env"); 1790169695Skan // The thread-env() field is cleared in ~CompileTaskWrapper. 1791169695Skan 1792169695Skan // Cache Jvmti state 1793169695Skan ci_env.cache_jvmti_state(); 1794169695Skan 1795169695Skan // Cache DTrace flags 1796169695Skan ci_env.cache_dtrace_flags(); 1797169695Skan 1798169695Skan ciMethod* target = ci_env.get_method_from_handle(target_handle); 1799169695Skan 1800169695Skan TraceTime t1("compilation", &time); 1801169695Skan EventCompilation event; 1802169695Skan 1803169695Skan AbstractCompiler *comp = compiler(task_level); 1804169695Skan if (comp == NULL) { 1805169695Skan ci_env.record_method_not_compilable("no compiler", !TieredCompilation); 1806169695Skan } else { 1807169695Skan comp->compile_method(&ci_env, target, osr_bci); 1808169695Skan } 1809169695Skan 1810169695Skan if (!ci_env.failing() && task->code() == NULL) { 1811169695Skan //assert(false, "compiler should always document failure"); 1812169695Skan // The compiler elected, without comment, not to register a result. 1813169695Skan // Do not attempt further compilations of this method. 1814169695Skan ci_env.record_method_not_compilable("compile failed", !TieredCompilation); 1815169695Skan } 1816169695Skan 1817169695Skan // Copy this bit to the enclosing block: 1818169695Skan compilable = ci_env.compilable(); 1819169695Skan 1820169695Skan if (ci_env.failing()) { 1821169695Skan const char* retry_message = ci_env.retry_message(); 1822169695Skan if (_compilation_log != NULL) { 1823169695Skan _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); 1824169695Skan } 1825169695Skan if (PrintCompilation) { 1826169695Skan FormatBufferResource msg = retry_message != NULL ? 1827169695Skan err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : 1828169695Skan err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); 1829169695Skan task->print_compilation(tty, msg); 1830169695Skan } 1831169695Skan } else { 1832169695Skan task->mark_success(); 1833169695Skan task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); 1834169695Skan if (_compilation_log != NULL) { 1835169695Skan nmethod* code = task->code(); 1836169695Skan if (code != NULL) { 1837169695Skan _compilation_log->log_nmethod(thread, code); 1838169695Skan } 1839169695Skan } 1840169695Skan } 1841169695Skan // simulate crash during compilation 1842169695Skan assert(task->compile_id() != CICrashAt, "just as planned"); 1843169695Skan if (event.should_commit()) { 1844169695Skan event.set_method(target->get_Method()); 1845169695Skan event.set_compileID(compile_id); 1846169695Skan event.set_compileLevel(task->comp_level()); 1847169695Skan event.set_succeded(task->is_success()); 1848169695Skan event.set_isOsr(is_osr); 1849169695Skan event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); 1850169695Skan event.set_inlinedBytes(task->num_inlined_bytecodes()); 1851169695Skan event.commit(); 1852169695Skan } 1853169695Skan } 1854169695Skan pop_jni_handle_block(); 1855169695Skan 1856169695Skan methodHandle method(thread, task->method()); 1857169695Skan 1858169695Skan DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); 1859169695Skan 1860169695Skan collect_statistics(thread, time, task); 1861169695Skan 1862169695Skan if (PrintCompilation && PrintCompilation2) { 1863169695Skan tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp 1864169695Skan tty->print("%4d ", compile_id); // print compilation number 1865169695Skan tty->print("%s ", (is_osr ? "%" : " ")); 1866169695Skan if (task->code() != NULL) { 1867169695Skan tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); 1868169695Skan } 1869169695Skan tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); 1870169695Skan } 1871169695Skan 1872169695Skan if (PrintCodeCacheOnCompilation) 1873169695Skan codecache_print(/* detailed= */ false); 1874169695Skan 1875169695Skan // Disable compilation, if required. 1876169695Skan switch (compilable) { 1877169695Skan case ciEnv::MethodCompilable_never: 1878169695Skan if (is_osr) 1879169695Skan method->set_not_osr_compilable_quietly(); 1880169695Skan else 1881169695Skan method->set_not_compilable_quietly(); 1882169695Skan break; 1883169695Skan case ciEnv::MethodCompilable_not_at_tier: 1884169695Skan if (is_osr) 1885169695Skan method->set_not_osr_compilable_quietly(task_level); 1886169695Skan else 1887169695Skan method->set_not_compilable_quietly(task_level); 1888169695Skan break; 1889169695Skan } 1890169695Skan 1891169695Skan // Note that the queued_for_compilation bits are cleared without 1892169695Skan // protection of a mutex. [They were set by the requester thread, 1893169695Skan // when adding the task to the complie queue -- at which time the 1894169695Skan // compile queue lock was held. Subsequently, we acquired the compile 1895169695Skan // queue lock to get this task off the compile queue; thus (to belabour 1896169695Skan // the point somewhat) our clearing of the bits must be occurring 1897169695Skan // only after the setting of the bits. See also 14012000 above. 1898169695Skan method->clear_queued_for_compilation(); 1899169695Skan 1900169695Skan#ifdef ASSERT 1901169695Skan if (CollectedHeap::fired_fake_oom()) { 1902169695Skan // The current compile received a fake OOM during compilation so 1903169695Skan // go ahead and exit the VM since the test apparently succeeded 1904169695Skan tty->print_cr("*** Shutting down VM after successful fake OOM"); 1905169695Skan vm_exit(0); 1906169695Skan } 1907169695Skan#endif 1908169695Skan} 1909169695Skan 1910169695Skan// ------------------------------------------------------------------ 1911169695Skan// CompileBroker::handle_full_code_cache 1912169695Skan// 1913169695Skan// The CodeCache is full. Print out warning and disable compilation or 1914169695Skan// try code cache cleaning so compilation can continue later. 1915169695Skanvoid CompileBroker::handle_full_code_cache() { 1916169695Skan UseInterpreter = true; 1917169695Skan if (UseCompiler || AlwaysCompileLoopMethods ) { 1918169695Skan if (xtty != NULL) { 1919169695Skan ResourceMark rm; 1920169695Skan stringStream s; 1921169695Skan // Dump code cache state into a buffer before locking the tty, 1922169695Skan // because log_state() will use locks causing lock conflicts. 1923169695Skan CodeCache::log_state(&s); 1924169695Skan // Lock to prevent tearing 1925169695Skan ttyLocker ttyl; 1926169695Skan xtty->begin_elem("code_cache_full"); 1927169695Skan xtty->print(s.as_string()); 1928169695Skan xtty->stamp(); 1929169695Skan xtty->end_elem(); 1930169695Skan } 1931169695Skan warning("CodeCache is full. Compiler has been disabled."); 1932169695Skan warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); 1933169695Skan 1934169695Skan CodeCache::report_codemem_full(); 1935169695Skan 1936169695Skan 1937169695Skan#ifndef PRODUCT 1938169695Skan if (CompileTheWorld || ExitOnFullCodeCache) { 1939169695Skan codecache_print(/* detailed= */ true); 1940169695Skan before_exit(JavaThread::current()); 1941169695Skan exit_globals(); // will delete tty 1942169695Skan vm_direct_exit(CompileTheWorld ? 0 : 1); 1943169695Skan } 1944169695Skan#endif 1945169695Skan if (UseCodeCacheFlushing) { 1946169695Skan NMethodSweeper::handle_full_code_cache(true); 1947169695Skan } else { 1948169695Skan UseCompiler = false; 1949169695Skan AlwaysCompileLoopMethods = false; 1950169695Skan } 1951169695Skan } 1952169695Skan codecache_print(/* detailed= */ true); 1953169695Skan} 1954169695Skan 1955169695Skan// ------------------------------------------------------------------ 1956169695Skan// CompileBroker::set_last_compile 1957169695Skan// 1958169695Skan// Record this compilation for debugging purposes. 1959169695Skanvoid CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { 1960169695Skan ResourceMark rm; 1961169695Skan char* method_name = method->name()->as_C_string(); 1962169695Skan strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); 1963169695Skan char current_method[CompilerCounters::cmname_buffer_length]; 1964169695Skan size_t maxLen = CompilerCounters::cmname_buffer_length; 1965169695Skan 1966169695Skan if (UsePerfData) { 1967169695Skan const char* class_name = method->method_holder()->name()->as_C_string(); 1968169695Skan 1969169695Skan size_t s1len = strlen(class_name); 1970169695Skan size_t s2len = strlen(method_name); 1971169695Skan 1972169695Skan // check if we need to truncate the string 1973169695Skan if (s1len + s2len + 2 > maxLen) { 1974169695Skan 1975169695Skan // the strategy is to lop off the leading characters of the 1976169695Skan // class name and the trailing characters of the method name. 1977169695Skan 1978169695Skan if (s2len + 2 > maxLen) { 1979169695Skan // lop of the entire class name string, let snprintf handle 1980169695Skan // truncation of the method name. 1981169695Skan class_name += s1len; // null string 1982169695Skan } 1983169695Skan else { 1984169695Skan // lop off the extra characters from the front of the class name 1985169695Skan class_name += ((s1len + s2len + 2) - maxLen); 1986169695Skan } 1987169695Skan } 1988169695Skan 1989169695Skan jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); 1990169695Skan } 1991169695Skan 1992169695Skan if (CICountOSR && is_osr) { 1993169695Skan _last_compile_type = osr_compile; 1994169695Skan } else { 1995169695Skan _last_compile_type = normal_compile; 1996169695Skan } 1997169695Skan _last_compile_level = comp_level; 1998169695Skan 1999169695Skan if (UsePerfData) { 2000169695Skan CompilerCounters* counters = thread->counters(); 2001169695Skan counters->set_current_method(current_method); 2002169695Skan counters->set_compile_type((jlong)_last_compile_type); 2003169695Skan } 2004169695Skan} 2005169695Skan 2006169695Skan 2007169695Skan// ------------------------------------------------------------------ 2008169695Skan// CompileBroker::push_jni_handle_block 2009169695Skan// 2010169695Skan// Push on a new block of JNI handles. 2011169695Skanvoid CompileBroker::push_jni_handle_block() { 2012169695Skan JavaThread* thread = JavaThread::current(); 2013169695Skan 2014169695Skan // Allocate a new block for JNI handles. 2015169695Skan // Inlined code from jni_PushLocalFrame() 2016169695Skan JNIHandleBlock* java_handles = thread->active_handles(); 2017169695Skan JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); 2018169695Skan assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); 2019169695Skan compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. 2020169695Skan thread->set_active_handles(compile_handles); 2021169695Skan} 2022169695Skan 2023169695Skan 2024169695Skan// ------------------------------------------------------------------ 2025169695Skan// CompileBroker::pop_jni_handle_block 2026169695Skan// 2027169695Skan// Pop off the current block of JNI handles. 2028169695Skanvoid CompileBroker::pop_jni_handle_block() { 2029169695Skan JavaThread* thread = JavaThread::current(); 2030169695Skan 2031169695Skan // Release our JNI handle block 2032169695Skan JNIHandleBlock* compile_handles = thread->active_handles(); 2033169695Skan JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); 2034169695Skan thread->set_active_handles(java_handles); 2035169695Skan compile_handles->set_pop_frame_link(NULL); 2036169695Skan JNIHandleBlock::release_block(compile_handles, thread); // may block 2037169695Skan} 2038169695Skan 2039169695Skan 2040169695Skan// ------------------------------------------------------------------ 2041169695Skan// CompileBroker::check_break_at 2042169695Skan// 2043169695Skan// Should the compilation break at the current compilation. 2044169695Skanbool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { 2045169695Skan if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { 2046169695Skan return true; 2047169695Skan } else if( CompilerOracle::should_break_at(method) ) { // break when compiling 2048169695Skan return true; 2049169695Skan } else { 2050169695Skan return (compile_id == CIBreakAt); 2051169695Skan } 2052169695Skan} 2053169695Skan 2054169695Skan// ------------------------------------------------------------------ 2055169695Skan// CompileBroker::collect_statistics 2056169695Skan// 2057169695Skan// Collect statistics about the compilation. 2058169695Skan 2059169695Skanvoid CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { 2060169695Skan bool success = task->is_success(); 2061169695Skan methodHandle method (thread, task->method()); 2062169695Skan uint compile_id = task->compile_id(); 2063169695Skan bool is_osr = (task->osr_bci() != standard_entry_bci); 2064169695Skan nmethod* code = task->code(); 2065169695Skan CompilerCounters* counters = thread->counters(); 2066169695Skan 2067169695Skan assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); 2068169695Skan MutexLocker locker(CompileStatistics_lock); 2069169695Skan 2070169695Skan // _perf variables are production performance counters which are 2071169695Skan // updated regardless of the setting of the CITime and CITimeEach flags 2072169695Skan // 2073169695Skan if (!success) { 2074169695Skan _total_bailout_count++; 2075169695Skan if (UsePerfData) { 2076169695Skan _perf_last_failed_method->set_value(counters->current_method()); 2077169695Skan _perf_last_failed_type->set_value(counters->compile_type()); 2078169695Skan _perf_total_bailout_count->inc(); 2079169695Skan } 2080169695Skan } else if (code == NULL) { 2081169695Skan if (UsePerfData) { 2082169695Skan _perf_last_invalidated_method->set_value(counters->current_method()); 2083169695Skan _perf_last_invalidated_type->set_value(counters->compile_type()); 2084169695Skan _perf_total_invalidated_count->inc(); 2085169695Skan } 2086169695Skan _total_invalidated_count++; 2087169695Skan } else { 2088169695Skan // Compilation succeeded 2089169695Skan 2090169695Skan // update compilation ticks - used by the implementation of 2091169695Skan // java.lang.management.CompilationMBean 2092169695Skan _perf_total_compilation->inc(time.ticks()); 2093169695Skan 2094169695Skan _t_total_compilation.add(time); 2095169695Skan _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; 2096169695Skan 2097169695Skan if (CITime) { 2098169695Skan if (is_osr) { 2099169695Skan _t_osr_compilation.add(time); 2100169695Skan _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); 2101169695Skan } else { 2102169695Skan _t_standard_compilation.add(time); 2103169695Skan _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); 2104169695Skan } 2105169695Skan } 2106169695Skan 2107169695Skan if (UsePerfData) { 2108169695Skan // save the name of the last method compiled 2109169695Skan _perf_last_method->set_value(counters->current_method()); 2110169695Skan _perf_last_compile_type->set_value(counters->compile_type()); 2111169695Skan _perf_last_compile_size->set_value(method->code_size() + 2112169695Skan task->num_inlined_bytecodes()); 2113169695Skan if (is_osr) { 2114169695Skan _perf_osr_compilation->inc(time.ticks()); 2115169695Skan _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); 2116169695Skan } else { 2117169695Skan _perf_standard_compilation->inc(time.ticks()); 2118169695Skan _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); 2119169695Skan } 2120169695Skan } 2121169695Skan 2122169695Skan if (CITimeEach) { 2123169695Skan float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); 2124169695Skan tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", 2125169695Skan compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); 2126169695Skan } 2127169695Skan 2128169695Skan // Collect counts of successful compilations 2129169695Skan _sum_nmethod_size += code->total_size(); 2130169695Skan _sum_nmethod_code_size += code->insts_size(); 2131169695Skan _total_compile_count++; 2132169695Skan 2133169695Skan if (UsePerfData) { 2134169695Skan _perf_sum_nmethod_size->inc( code->total_size()); 2135169695Skan _perf_sum_nmethod_code_size->inc(code->insts_size()); 2136169695Skan _perf_total_compile_count->inc(); 2137169695Skan } 2138169695Skan 2139169695Skan if (is_osr) { 2140169695Skan if (UsePerfData) _perf_total_osr_compile_count->inc(); 2141169695Skan _total_osr_compile_count++; 2142169695Skan } else { 2143169695Skan if (UsePerfData) _perf_total_standard_compile_count->inc(); 2144169695Skan _total_standard_compile_count++; 2145169695Skan } 2146169695Skan } 2147169695Skan // set the current method for the thread to null 2148169695Skan if (UsePerfData) counters->set_current_method(""); 2149169695Skan} 2150169695Skan 2151169695Skanconst char* CompileBroker::compiler_name(int comp_level) { 2152169695Skan AbstractCompiler *comp = CompileBroker::compiler(comp_level); 2153169695Skan if (comp == NULL) { 2154169695Skan return "no compiler"; 2155169695Skan } else { 2156169695Skan return (comp->name()); 2157169695Skan } 2158169695Skan} 2159169695Skan 2160169695Skanvoid CompileBroker::print_times() { 2161169695Skan tty->cr(); 2162169695Skan tty->print_cr("Accumulated compiler times (for compiled methods only)"); 2163169695Skan tty->print_cr("------------------------------------------------"); 2164169695Skan //0000000000111111111122222222223333333333444444444455555555556666666666 2165169695Skan //0123456789012345678901234567890123456789012345678901234567890123456789 2166169695Skan tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); 2167169695Skan tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", 2168169695Skan CompileBroker::_t_standard_compilation.seconds(), 2169169695Skan CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); 2170169695Skan tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count); 2171169695Skan 2172169695Skan AbstractCompiler *comp = compiler(CompLevel_simple); 2173169695Skan if (comp != NULL) { 2174169695Skan comp->print_timers(); 2175169695Skan } 2176169695Skan comp = compiler(CompLevel_full_optimization); 2177169695Skan if (comp != NULL) { 2178169695Skan comp->print_timers(); 2179169695Skan } 2180169695Skan tty->cr(); 2181169695Skan tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); 2182169695Skan tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); 2183169695Skan tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); 2184169695Skan int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; 2185169695Skan tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); 2186169695Skan tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); 2187169695Skan tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); 2188169695Skan int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); 2189169695Skan tty->print_cr(" Average compilation speed: %6d bytes/s", bps); 2190169695Skan tty->cr(); 2191169695Skan tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); 2192169695Skan tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); 2193169695Skan} 2194169695Skan 2195169695Skan// Debugging output for failure 2196169695Skanvoid CompileBroker::print_last_compile() { 2197169695Skan if ( _last_compile_level != CompLevel_none && 2198169695Skan compiler(_last_compile_level) != NULL && 2199169695Skan _last_method_compiled != NULL && 2200169695Skan _last_compile_type != no_compile) { 2201169695Skan if (_last_compile_type == osr_compile) { 2202169695Skan tty->print_cr("Last parse: [osr]%d+++(%d) %s", 2203169695Skan _osr_compilation_id, _last_compile_level, _last_method_compiled); 2204169695Skan } else { 2205169695Skan tty->print_cr("Last parse: %d+++(%d) %s", 2206169695Skan _compilation_id, _last_compile_level, _last_method_compiled); 2207169695Skan } 2208169695Skan } 2209169695Skan} 2210169695Skan 2211169695Skan 2212169695Skanvoid CompileBroker::print_compiler_threads_on(outputStream* st) { 2213169695Skan#ifndef PRODUCT 2214169695Skan st->print_cr("Compiler thread printing unimplemented."); 2215169695Skan st->cr(); 2216169695Skan#endif 2217169695Skan} 2218169695Skan