2072 lines
76 KiB
C++
2072 lines
76 KiB
C++
/*
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* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "classfile/vmSymbols.hpp"
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#include "code/codeCache.hpp"
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#include "compiler/compileBroker.hpp"
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#include "compiler/compileLog.hpp"
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#include "compiler/compilerOracle.hpp"
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#include "interpreter/linkResolver.hpp"
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#include "memory/allocation.inline.hpp"
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#include "oops/methodDataOop.hpp"
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#include "oops/methodOop.hpp"
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#include "oops/oop.inline.hpp"
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#include "prims/nativeLookup.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/compilationPolicy.hpp"
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#include "runtime/init.hpp"
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#include "runtime/interfaceSupport.hpp"
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#include "runtime/javaCalls.hpp"
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#include "runtime/os.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "runtime/sweeper.hpp"
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#include "utilities/dtrace.hpp"
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#ifdef COMPILER1
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#include "c1/c1_Compiler.hpp"
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#endif
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#ifdef COMPILER2
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#include "opto/c2compiler.hpp"
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#endif
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#ifdef SHARK
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#include "shark/sharkCompiler.hpp"
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#endif
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#ifdef DTRACE_ENABLED
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// Only bother with this argument setup if dtrace is available
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#ifndef USDT2
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HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
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char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
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HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
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char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
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#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
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{ \
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char* comp_name = (char*)(compiler)->name(); \
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Symbol* klass_name = (method)->klass_name(); \
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Symbol* name = (method)->name(); \
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Symbol* signature = (method)->signature(); \
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HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
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comp_name, strlen(comp_name), \
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klass_name->bytes(), klass_name->utf8_length(), \
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name->bytes(), name->utf8_length(), \
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signature->bytes(), signature->utf8_length()); \
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}
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#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
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{ \
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char* comp_name = (char*)(compiler)->name(); \
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Symbol* klass_name = (method)->klass_name(); \
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Symbol* name = (method)->name(); \
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Symbol* signature = (method)->signature(); \
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HS_DTRACE_PROBE9(hotspot, method__compile__end, \
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comp_name, strlen(comp_name), \
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klass_name->bytes(), klass_name->utf8_length(), \
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name->bytes(), name->utf8_length(), \
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signature->bytes(), signature->utf8_length(), (success)); \
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}
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#else /* USDT2 */
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#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
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{ \
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char* comp_name = (char*)(compiler)->name(); \
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Symbol* klass_name = (method)->klass_name(); \
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Symbol* name = (method)->name(); \
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Symbol* signature = (method)->signature(); \
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HOTSPOT_METHOD_COMPILE_BEGIN( \
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comp_name, strlen(comp_name), \
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(char *) klass_name->bytes(), klass_name->utf8_length(), \
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(char *) name->bytes(), name->utf8_length(), \
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(char *) signature->bytes(), signature->utf8_length()); \
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}
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#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
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{ \
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char* comp_name = (char*)(compiler)->name(); \
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Symbol* klass_name = (method)->klass_name(); \
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Symbol* name = (method)->name(); \
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Symbol* signature = (method)->signature(); \
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HOTSPOT_METHOD_COMPILE_END( \
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comp_name, strlen(comp_name), \
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(char *) klass_name->bytes(), klass_name->utf8_length(), \
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(char *) name->bytes(), name->utf8_length(), \
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(char *) signature->bytes(), signature->utf8_length(), (success)); \
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}
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#endif /* USDT2 */
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#else // ndef DTRACE_ENABLED
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#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
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#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
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#endif // ndef DTRACE_ENABLED
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bool CompileBroker::_initialized = false;
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volatile bool CompileBroker::_should_block = false;
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volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
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// The installed compiler(s)
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AbstractCompiler* CompileBroker::_compilers[2];
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// These counters are used for assigning id's to each compilation
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uint CompileBroker::_compilation_id = 0;
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uint CompileBroker::_osr_compilation_id = 0;
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// Debugging information
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int CompileBroker::_last_compile_type = no_compile;
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int CompileBroker::_last_compile_level = CompLevel_none;
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char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
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// Performance counters
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PerfCounter* CompileBroker::_perf_total_compilation = NULL;
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PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
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PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
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PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
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PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
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PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
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PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
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PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
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PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
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PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
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PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
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PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
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PerfStringVariable* CompileBroker::_perf_last_method = NULL;
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PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
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PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
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PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
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PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
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PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
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PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
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// Timers and counters for generating statistics
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elapsedTimer CompileBroker::_t_total_compilation;
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elapsedTimer CompileBroker::_t_osr_compilation;
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elapsedTimer CompileBroker::_t_standard_compilation;
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int CompileBroker::_total_bailout_count = 0;
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int CompileBroker::_total_invalidated_count = 0;
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int CompileBroker::_total_compile_count = 0;
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int CompileBroker::_total_osr_compile_count = 0;
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int CompileBroker::_total_standard_compile_count = 0;
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int CompileBroker::_sum_osr_bytes_compiled = 0;
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int CompileBroker::_sum_standard_bytes_compiled = 0;
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int CompileBroker::_sum_nmethod_size = 0;
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int CompileBroker::_sum_nmethod_code_size = 0;
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CompileQueue* CompileBroker::_c2_method_queue = NULL;
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CompileQueue* CompileBroker::_c1_method_queue = NULL;
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CompileTask* CompileBroker::_task_free_list = NULL;
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GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
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CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
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CompilerThread* thread = CompilerThread::current();
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thread->set_task(task);
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CompileLog* log = thread->log();
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if (log != NULL) task->log_task_start(log);
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}
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CompileTaskWrapper::~CompileTaskWrapper() {
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CompilerThread* thread = CompilerThread::current();
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CompileTask* task = thread->task();
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CompileLog* log = thread->log();
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if (log != NULL) task->log_task_done(log);
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thread->set_task(NULL);
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task->set_code_handle(NULL);
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DEBUG_ONLY(thread->set_env((ciEnv*)badAddress));
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if (task->is_blocking()) {
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MutexLocker notifier(task->lock(), thread);
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task->mark_complete();
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// Notify the waiting thread that the compilation has completed.
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task->lock()->notify_all();
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} else {
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task->mark_complete();
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// By convention, the compiling thread is responsible for
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// recycling a non-blocking CompileTask.
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CompileBroker::free_task(task);
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}
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}
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// ------------------------------------------------------------------
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// CompileTask::initialize
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void CompileTask::initialize(int compile_id,
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methodHandle method,
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int osr_bci,
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int comp_level,
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methodHandle hot_method,
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int hot_count,
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const char* comment,
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bool is_blocking) {
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assert(!_lock->is_locked(), "bad locking");
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_compile_id = compile_id;
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_method = JNIHandles::make_global(method);
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_osr_bci = osr_bci;
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_is_blocking = is_blocking;
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_comp_level = comp_level;
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_num_inlined_bytecodes = 0;
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_is_complete = false;
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_is_success = false;
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_code_handle = NULL;
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_hot_method = NULL;
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_hot_count = hot_count;
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_time_queued = 0; // tidy
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_comment = comment;
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if (LogCompilation) {
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_time_queued = os::elapsed_counter();
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if (hot_method.not_null()) {
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if (hot_method == method) {
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_hot_method = _method;
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} else {
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_hot_method = JNIHandles::make_global(hot_method);
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}
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}
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}
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_next = NULL;
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}
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// ------------------------------------------------------------------
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// CompileTask::code/set_code
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nmethod* CompileTask::code() const {
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if (_code_handle == NULL) return NULL;
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return _code_handle->code();
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}
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void CompileTask::set_code(nmethod* nm) {
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if (_code_handle == NULL && nm == NULL) return;
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guarantee(_code_handle != NULL, "");
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_code_handle->set_code(nm);
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if (nm == NULL) _code_handle = NULL; // drop the handle also
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}
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// ------------------------------------------------------------------
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// CompileTask::free
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void CompileTask::free() {
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set_code(NULL);
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assert(!_lock->is_locked(), "Should not be locked when freed");
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if (_hot_method != NULL && _hot_method != _method) {
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JNIHandles::destroy_global(_hot_method);
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}
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JNIHandles::destroy_global(_method);
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}
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// ------------------------------------------------------------------
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// CompileTask::print
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void CompileTask::print() {
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tty->print("<CompileTask compile_id=%d ", _compile_id);
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tty->print("method=");
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((methodOop)JNIHandles::resolve(_method))->print_name(tty);
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tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
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_osr_bci, bool_to_str(_is_blocking),
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bool_to_str(_is_complete), bool_to_str(_is_success));
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}
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// ------------------------------------------------------------------
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// CompileTask::print_line_on_error
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//
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// This function is called by fatal error handler when the thread
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// causing troubles is a compiler thread.
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//
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// Do not grab any lock, do not allocate memory.
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//
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// Otherwise it's the same as CompileTask::print_line()
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//
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void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
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// print compiler name
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st->print("%s:", CompileBroker::compiler(comp_level())->name());
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print_compilation(st);
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}
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// ------------------------------------------------------------------
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// CompileTask::print_line
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void CompileTask::print_line() {
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ttyLocker ttyl; // keep the following output all in one block
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// print compiler name if requested
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if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
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print_compilation();
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}
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// ------------------------------------------------------------------
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// CompileTask::print_compilation_impl
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void CompileTask::print_compilation_impl(outputStream* st, methodOop method, int compile_id, int comp_level, bool is_osr_method, int osr_bci, bool is_blocking, const char* msg) {
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st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
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st->print("%4d ", compile_id); // print compilation number
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// For unloaded methods the transition to zombie occurs after the
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// method is cleared so it's impossible to report accurate
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// information for that case.
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bool is_synchronized = false;
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bool has_exception_handler = false;
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bool is_native = false;
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if (method != NULL) {
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is_synchronized = method->is_synchronized();
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has_exception_handler = method->has_exception_handler();
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is_native = method->is_native();
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}
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// method attributes
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const char compile_type = is_osr_method ? '%' : ' ';
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const char sync_char = is_synchronized ? 's' : ' ';
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const char exception_char = has_exception_handler ? '!' : ' ';
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const char blocking_char = is_blocking ? 'b' : ' ';
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const char native_char = is_native ? 'n' : ' ';
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// print method attributes
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st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
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if (TieredCompilation) {
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if (comp_level != -1) st->print("%d ", comp_level);
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else st->print("- ");
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}
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st->print(" "); // more indent
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if (method == NULL) {
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st->print("(method)");
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} else {
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method->print_short_name(st);
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if (is_osr_method) {
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st->print(" @ %d", osr_bci);
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}
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st->print(" (%d bytes)", method->code_size());
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}
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if (msg != NULL) {
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st->print(" %s", msg);
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}
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st->cr();
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}
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// ------------------------------------------------------------------
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// CompileTask::print_inlining
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void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
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// 1234567
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st->print(" "); // print timestamp
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// 1234
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st->print(" "); // print compilation number
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// method attributes
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const char sync_char = method->is_synchronized() ? 's' : ' ';
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const char exception_char = method->has_exception_handlers() ? '!' : ' ';
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const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
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// print method attributes
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st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
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if (TieredCompilation) {
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st->print(" ");
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}
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st->print(" "); // more indent
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st->print(" "); // initial inlining indent
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for (int i = 0; i < inline_level; i++) st->print(" ");
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st->print("@ %d ", bci); // print bci
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method->print_short_name(st);
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st->print(" (%d bytes)", method->code_size());
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if (msg != NULL) {
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st->print(" %s", msg);
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}
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st->cr();
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}
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// ------------------------------------------------------------------
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// CompileTask::print_inline_indent
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void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
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// 1234567
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st->print(" "); // print timestamp
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// 1234
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st->print(" "); // print compilation number
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// %s!bn
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st->print(" "); // print method attributes
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if (TieredCompilation) {
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st->print(" ");
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}
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st->print(" "); // more indent
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st->print(" "); // initial inlining indent
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for (int i = 0; i < inline_level; i++) st->print(" ");
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}
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// ------------------------------------------------------------------
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// CompileTask::print_compilation
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void CompileTask::print_compilation(outputStream* st) {
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oop rem = JNIHandles::resolve(method_handle());
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assert(rem != NULL && rem->is_method(), "must be");
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methodOop method = (methodOop) rem;
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bool is_osr_method = osr_bci() != InvocationEntryBci;
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print_compilation_impl(st, method, compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking());
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task
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void CompileTask::log_task(xmlStream* log) {
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Thread* thread = Thread::current();
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methodHandle method(thread,
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(methodOop)JNIHandles::resolve(method_handle()));
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ResourceMark rm(thread);
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// <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
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if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id);
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if (_osr_bci != CompileBroker::standard_entry_bci) {
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log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
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} // else compile_kind='c2c'
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if (!method.is_null()) log->method(method);
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if (_osr_bci != CompileBroker::standard_entry_bci) {
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log->print(" osr_bci='%d'", _osr_bci);
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}
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if (_comp_level != CompLevel_highest_tier) {
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log->print(" level='%d'", _comp_level);
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}
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if (_is_blocking) {
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log->print(" blocking='1'");
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}
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log->stamp();
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task_queued
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void CompileTask::log_task_queued() {
|
|
Thread* thread = Thread::current();
|
|
ttyLocker ttyl;
|
|
ResourceMark rm(thread);
|
|
|
|
xtty->begin_elem("task_queued");
|
|
log_task(xtty);
|
|
if (_comment != NULL) {
|
|
xtty->print(" comment='%s'", _comment);
|
|
}
|
|
if (_hot_method != NULL) {
|
|
methodHandle hot(thread,
|
|
(methodOop)JNIHandles::resolve(_hot_method));
|
|
methodHandle method(thread,
|
|
(methodOop)JNIHandles::resolve(_method));
|
|
if (hot() != method()) {
|
|
xtty->method(hot);
|
|
}
|
|
}
|
|
if (_hot_count != 0) {
|
|
xtty->print(" hot_count='%d'", _hot_count);
|
|
}
|
|
xtty->end_elem();
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileTask::log_task_start
|
|
void CompileTask::log_task_start(CompileLog* log) {
|
|
log->begin_head("task");
|
|
log_task(log);
|
|
log->end_head();
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileTask::log_task_done
|
|
void CompileTask::log_task_done(CompileLog* log) {
|
|
Thread* thread = Thread::current();
|
|
methodHandle method(thread,
|
|
(methodOop)JNIHandles::resolve(method_handle()));
|
|
ResourceMark rm(thread);
|
|
|
|
// <task_done ... stamp='1.234'> </task>
|
|
nmethod* nm = code();
|
|
log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
|
|
_is_success, nm == NULL ? 0 : nm->content_size(),
|
|
method->invocation_count());
|
|
int bec = method->backedge_count();
|
|
if (bec != 0) log->print(" backedge_count='%d'", bec);
|
|
// Note: "_is_complete" is about to be set, but is not.
|
|
if (_num_inlined_bytecodes != 0) {
|
|
log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
|
|
}
|
|
log->stamp();
|
|
log->end_elem();
|
|
log->tail("task");
|
|
log->clear_identities(); // next task will have different CI
|
|
if (log->unflushed_count() > 2000) {
|
|
log->flush();
|
|
}
|
|
log->mark_file_end();
|
|
}
|
|
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileQueue::add
|
|
//
|
|
// Add a CompileTask to a CompileQueue
|
|
void CompileQueue::add(CompileTask* task) {
|
|
assert(lock()->owned_by_self(), "must own lock");
|
|
|
|
task->set_next(NULL);
|
|
task->set_prev(NULL);
|
|
|
|
if (_last == NULL) {
|
|
// The compile queue is empty.
|
|
assert(_first == NULL, "queue is empty");
|
|
_first = task;
|
|
_last = task;
|
|
} else {
|
|
// Append the task to the queue.
|
|
assert(_last->next() == NULL, "not last");
|
|
_last->set_next(task);
|
|
task->set_prev(_last);
|
|
_last = task;
|
|
}
|
|
++_size;
|
|
|
|
// Mark the method as being in the compile queue.
|
|
((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation();
|
|
|
|
if (CIPrintCompileQueue) {
|
|
print();
|
|
}
|
|
|
|
if (LogCompilation && xtty != NULL) {
|
|
task->log_task_queued();
|
|
}
|
|
|
|
// Notify CompilerThreads that a task is available.
|
|
lock()->notify_all();
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileQueue::get
|
|
//
|
|
// Get the next CompileTask from a CompileQueue
|
|
CompileTask* CompileQueue::get() {
|
|
NMethodSweeper::possibly_sweep();
|
|
|
|
MutexLocker locker(lock());
|
|
// Wait for an available CompileTask.
|
|
while (_first == NULL) {
|
|
// There is no work to be done right now. Wait.
|
|
if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) {
|
|
// During the emergency sweeping periods, wake up and sweep occasionally
|
|
bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000);
|
|
if (timedout) {
|
|
MutexUnlocker ul(lock());
|
|
// When otherwise not busy, run nmethod sweeping
|
|
NMethodSweeper::possibly_sweep();
|
|
}
|
|
} else {
|
|
// During normal operation no need to wake up on timer
|
|
lock()->wait();
|
|
}
|
|
}
|
|
CompileTask* task = CompilationPolicy::policy()->select_task(this);
|
|
remove(task);
|
|
return task;
|
|
}
|
|
|
|
void CompileQueue::remove(CompileTask* task)
|
|
{
|
|
assert(lock()->owned_by_self(), "must own lock");
|
|
if (task->prev() != NULL) {
|
|
task->prev()->set_next(task->next());
|
|
} else {
|
|
// max is the first element
|
|
assert(task == _first, "Sanity");
|
|
_first = task->next();
|
|
}
|
|
|
|
if (task->next() != NULL) {
|
|
task->next()->set_prev(task->prev());
|
|
} else {
|
|
// max is the last element
|
|
assert(task == _last, "Sanity");
|
|
_last = task->prev();
|
|
}
|
|
--_size;
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileQueue::print
|
|
void CompileQueue::print() {
|
|
tty->print_cr("Contents of %s", name());
|
|
tty->print_cr("----------------------");
|
|
CompileTask* task = _first;
|
|
while (task != NULL) {
|
|
task->print_line();
|
|
task = task->next();
|
|
}
|
|
tty->print_cr("----------------------");
|
|
}
|
|
|
|
CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
|
|
|
|
_current_method[0] = '\0';
|
|
_compile_type = CompileBroker::no_compile;
|
|
|
|
if (UsePerfData) {
|
|
ResourceMark rm;
|
|
|
|
// create the thread instance name space string - don't create an
|
|
// instance subspace if instance is -1 - keeps the adapterThread
|
|
// counters from having a ".0" namespace.
|
|
const char* thread_i = (instance == -1) ? thread_name :
|
|
PerfDataManager::name_space(thread_name, instance);
|
|
|
|
|
|
char* name = PerfDataManager::counter_name(thread_i, "method");
|
|
_perf_current_method =
|
|
PerfDataManager::create_string_variable(SUN_CI, name,
|
|
cmname_buffer_length,
|
|
_current_method, CHECK);
|
|
|
|
name = PerfDataManager::counter_name(thread_i, "type");
|
|
_perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
|
|
PerfData::U_None,
|
|
(jlong)_compile_type,
|
|
CHECK);
|
|
|
|
name = PerfDataManager::counter_name(thread_i, "time");
|
|
_perf_time = PerfDataManager::create_counter(SUN_CI, name,
|
|
PerfData::U_Ticks, CHECK);
|
|
|
|
name = PerfDataManager::counter_name(thread_i, "compiles");
|
|
_perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
|
|
PerfData::U_Events, CHECK);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::compilation_init
|
|
//
|
|
// Initialize the Compilation object
|
|
void CompileBroker::compilation_init() {
|
|
_last_method_compiled[0] = '\0';
|
|
|
|
#ifndef SHARK
|
|
// Set the interface to the current compiler(s).
|
|
int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
|
|
int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
|
|
#ifdef COMPILER1
|
|
if (c1_count > 0) {
|
|
_compilers[0] = new Compiler();
|
|
}
|
|
#endif // COMPILER1
|
|
|
|
#ifdef COMPILER2
|
|
if (c2_count > 0) {
|
|
_compilers[1] = new C2Compiler();
|
|
}
|
|
#endif // COMPILER2
|
|
|
|
#else // SHARK
|
|
int c1_count = 0;
|
|
int c2_count = 1;
|
|
|
|
_compilers[1] = new SharkCompiler();
|
|
#endif // SHARK
|
|
|
|
// Initialize the CompileTask free list
|
|
_task_free_list = NULL;
|
|
|
|
// Start the CompilerThreads
|
|
init_compiler_threads(c1_count, c2_count);
|
|
// totalTime performance counter is always created as it is required
|
|
// by the implementation of java.lang.management.CompilationMBean.
|
|
{
|
|
EXCEPTION_MARK;
|
|
_perf_total_compilation =
|
|
PerfDataManager::create_counter(JAVA_CI, "totalTime",
|
|
PerfData::U_Ticks, CHECK);
|
|
}
|
|
|
|
|
|
if (UsePerfData) {
|
|
|
|
EXCEPTION_MARK;
|
|
|
|
// create the jvmstat performance counters
|
|
_perf_osr_compilation =
|
|
PerfDataManager::create_counter(SUN_CI, "osrTime",
|
|
PerfData::U_Ticks, CHECK);
|
|
|
|
_perf_standard_compilation =
|
|
PerfDataManager::create_counter(SUN_CI, "standardTime",
|
|
PerfData::U_Ticks, CHECK);
|
|
|
|
_perf_total_bailout_count =
|
|
PerfDataManager::create_counter(SUN_CI, "totalBailouts",
|
|
PerfData::U_Events, CHECK);
|
|
|
|
_perf_total_invalidated_count =
|
|
PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
|
|
PerfData::U_Events, CHECK);
|
|
|
|
_perf_total_compile_count =
|
|
PerfDataManager::create_counter(SUN_CI, "totalCompiles",
|
|
PerfData::U_Events, CHECK);
|
|
_perf_total_osr_compile_count =
|
|
PerfDataManager::create_counter(SUN_CI, "osrCompiles",
|
|
PerfData::U_Events, CHECK);
|
|
|
|
_perf_total_standard_compile_count =
|
|
PerfDataManager::create_counter(SUN_CI, "standardCompiles",
|
|
PerfData::U_Events, CHECK);
|
|
|
|
_perf_sum_osr_bytes_compiled =
|
|
PerfDataManager::create_counter(SUN_CI, "osrBytes",
|
|
PerfData::U_Bytes, CHECK);
|
|
|
|
_perf_sum_standard_bytes_compiled =
|
|
PerfDataManager::create_counter(SUN_CI, "standardBytes",
|
|
PerfData::U_Bytes, CHECK);
|
|
|
|
_perf_sum_nmethod_size =
|
|
PerfDataManager::create_counter(SUN_CI, "nmethodSize",
|
|
PerfData::U_Bytes, CHECK);
|
|
|
|
_perf_sum_nmethod_code_size =
|
|
PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
|
|
PerfData::U_Bytes, CHECK);
|
|
|
|
_perf_last_method =
|
|
PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
|
|
CompilerCounters::cmname_buffer_length,
|
|
"", CHECK);
|
|
|
|
_perf_last_failed_method =
|
|
PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
|
|
CompilerCounters::cmname_buffer_length,
|
|
"", CHECK);
|
|
|
|
_perf_last_invalidated_method =
|
|
PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
|
|
CompilerCounters::cmname_buffer_length,
|
|
"", CHECK);
|
|
|
|
_perf_last_compile_type =
|
|
PerfDataManager::create_variable(SUN_CI, "lastType",
|
|
PerfData::U_None,
|
|
(jlong)CompileBroker::no_compile,
|
|
CHECK);
|
|
|
|
_perf_last_compile_size =
|
|
PerfDataManager::create_variable(SUN_CI, "lastSize",
|
|
PerfData::U_Bytes,
|
|
(jlong)CompileBroker::no_compile,
|
|
CHECK);
|
|
|
|
|
|
_perf_last_failed_type =
|
|
PerfDataManager::create_variable(SUN_CI, "lastFailedType",
|
|
PerfData::U_None,
|
|
(jlong)CompileBroker::no_compile,
|
|
CHECK);
|
|
|
|
_perf_last_invalidated_type =
|
|
PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
|
|
PerfData::U_None,
|
|
(jlong)CompileBroker::no_compile,
|
|
CHECK);
|
|
}
|
|
|
|
_initialized = true;
|
|
}
|
|
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::make_compiler_thread
|
|
CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
|
|
CompilerThread* compiler_thread = NULL;
|
|
|
|
klassOop k =
|
|
SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(),
|
|
true, CHECK_0);
|
|
instanceKlassHandle klass (THREAD, k);
|
|
instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
|
|
Handle string = java_lang_String::create_from_str(name, CHECK_0);
|
|
|
|
// Initialize thread_oop to put it into the system threadGroup
|
|
Handle thread_group (THREAD, Universe::system_thread_group());
|
|
JavaValue result(T_VOID);
|
|
JavaCalls::call_special(&result, thread_oop,
|
|
klass,
|
|
vmSymbols::object_initializer_name(),
|
|
vmSymbols::threadgroup_string_void_signature(),
|
|
thread_group,
|
|
string,
|
|
CHECK_0);
|
|
|
|
{
|
|
MutexLocker mu(Threads_lock, THREAD);
|
|
compiler_thread = new CompilerThread(queue, counters);
|
|
// At this point the new CompilerThread data-races with this startup
|
|
// thread (which I believe is the primoridal thread and NOT the VM
|
|
// thread). This means Java bytecodes being executed at startup can
|
|
// queue compile jobs which will run at whatever default priority the
|
|
// newly created CompilerThread runs at.
|
|
|
|
|
|
// At this point it may be possible that no osthread was created for the
|
|
// JavaThread due to lack of memory. We would have to throw an exception
|
|
// in that case. However, since this must work and we do not allow
|
|
// exceptions anyway, check and abort if this fails.
|
|
|
|
if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
|
|
vm_exit_during_initialization("java.lang.OutOfMemoryError",
|
|
"unable to create new native thread");
|
|
}
|
|
|
|
java_lang_Thread::set_thread(thread_oop(), compiler_thread);
|
|
|
|
// Note that this only sets the JavaThread _priority field, which by
|
|
// definition is limited to Java priorities and not OS priorities.
|
|
// The os-priority is set in the CompilerThread startup code itself
|
|
java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
|
|
// CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler
|
|
// threads never have their OS priority set. The assumption here is to
|
|
// enable the Performance group to do flag tuning, figure out a suitable
|
|
// CompilerThreadPriority, and then remove this 'if' statement (and
|
|
// comment) and unconditionally set the priority.
|
|
|
|
// Compiler Threads should be at the highest Priority
|
|
if ( CompilerThreadPriority != -1 )
|
|
os::set_native_priority( compiler_thread, CompilerThreadPriority );
|
|
else
|
|
os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]);
|
|
|
|
// Note that I cannot call os::set_priority because it expects Java
|
|
// priorities and I am *explicitly* using OS priorities so that it's
|
|
// possible to set the compiler thread priority higher than any Java
|
|
// thread.
|
|
|
|
java_lang_Thread::set_daemon(thread_oop());
|
|
|
|
compiler_thread->set_threadObj(thread_oop());
|
|
Threads::add(compiler_thread);
|
|
Thread::start(compiler_thread);
|
|
}
|
|
// Let go of Threads_lock before yielding
|
|
os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
|
|
|
|
return compiler_thread;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::init_compiler_threads
|
|
//
|
|
// Initialize the compilation queue
|
|
void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) {
|
|
EXCEPTION_MARK;
|
|
#if !defined(ZERO) && !defined(SHARK)
|
|
assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?");
|
|
#endif // !ZERO && !SHARK
|
|
if (c2_compiler_count > 0) {
|
|
_c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock);
|
|
}
|
|
if (c1_compiler_count > 0) {
|
|
_c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock);
|
|
}
|
|
|
|
int compiler_count = c1_compiler_count + c2_compiler_count;
|
|
|
|
_method_threads =
|
|
new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true);
|
|
|
|
char name_buffer[256];
|
|
for (int i = 0; i < c2_compiler_count; i++) {
|
|
// Create a name for our thread.
|
|
sprintf(name_buffer, "C2 CompilerThread%d", i);
|
|
CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
|
|
CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK);
|
|
_method_threads->append(new_thread);
|
|
}
|
|
|
|
for (int i = c2_compiler_count; i < compiler_count; i++) {
|
|
// Create a name for our thread.
|
|
sprintf(name_buffer, "C1 CompilerThread%d", i);
|
|
CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
|
|
CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK);
|
|
_method_threads->append(new_thread);
|
|
}
|
|
|
|
if (UsePerfData) {
|
|
PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
|
|
compiler_count, CHECK);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::is_idle
|
|
bool CompileBroker::is_idle() {
|
|
if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) {
|
|
return false;
|
|
} else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) {
|
|
return false;
|
|
} else {
|
|
int num_threads = _method_threads->length();
|
|
for (int i=0; i<num_threads; i++) {
|
|
if (_method_threads->at(i)->task() != NULL) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// No pending or active compilations.
|
|
return true;
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::compile_method
|
|
//
|
|
// Request compilation of a method.
|
|
void CompileBroker::compile_method_base(methodHandle method,
|
|
int osr_bci,
|
|
int comp_level,
|
|
methodHandle hot_method,
|
|
int hot_count,
|
|
const char* comment,
|
|
TRAPS) {
|
|
// do nothing if compiler thread(s) is not available
|
|
if (!_initialized ) {
|
|
return;
|
|
}
|
|
|
|
guarantee(!method->is_abstract(), "cannot compile abstract methods");
|
|
assert(method->method_holder()->klass_part()->oop_is_instance(),
|
|
"sanity check");
|
|
assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(),
|
|
"method holder must be initialized");
|
|
|
|
if (CIPrintRequests) {
|
|
tty->print("request: ");
|
|
method->print_short_name(tty);
|
|
if (osr_bci != InvocationEntryBci) {
|
|
tty->print(" osr_bci: %d", osr_bci);
|
|
}
|
|
tty->print(" comment: %s count: %d", comment, hot_count);
|
|
if (!hot_method.is_null()) {
|
|
tty->print(" hot: ");
|
|
if (hot_method() != method()) {
|
|
hot_method->print_short_name(tty);
|
|
} else {
|
|
tty->print("yes");
|
|
}
|
|
}
|
|
tty->cr();
|
|
}
|
|
|
|
// A request has been made for compilation. Before we do any
|
|
// real work, check to see if the method has been compiled
|
|
// in the meantime with a definitive result.
|
|
if (compilation_is_complete(method, osr_bci, comp_level)) {
|
|
return;
|
|
}
|
|
|
|
#ifndef PRODUCT
|
|
if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
|
|
if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
|
|
// Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// If this method is already in the compile queue, then
|
|
// we do not block the current thread.
|
|
if (compilation_is_in_queue(method, osr_bci)) {
|
|
// We may want to decay our counter a bit here to prevent
|
|
// multiple denied requests for compilation. This is an
|
|
// open compilation policy issue. Note: The other possibility,
|
|
// in the case that this is a blocking compile request, is to have
|
|
// all subsequent blocking requesters wait for completion of
|
|
// ongoing compiles. Note that in this case we'll need a protocol
|
|
// for freeing the associated compile tasks. [Or we could have
|
|
// a single static monitor on which all these waiters sleep.]
|
|
return;
|
|
}
|
|
|
|
// If the requesting thread is holding the pending list lock
|
|
// then we just return. We can't risk blocking while holding
|
|
// the pending list lock or a 3-way deadlock may occur
|
|
// between the reference handler thread, a GC (instigated
|
|
// by a compiler thread), and compiled method registration.
|
|
if (instanceRefKlass::owns_pending_list_lock(JavaThread::current())) {
|
|
return;
|
|
}
|
|
|
|
// Outputs from the following MutexLocker block:
|
|
CompileTask* task = NULL;
|
|
bool blocking = false;
|
|
CompileQueue* queue = compile_queue(comp_level);
|
|
|
|
// Acquire our lock.
|
|
{
|
|
MutexLocker locker(queue->lock(), THREAD);
|
|
|
|
// Make sure the method has not slipped into the queues since
|
|
// last we checked; note that those checks were "fast bail-outs".
|
|
// Here we need to be more careful, see 14012000 below.
|
|
if (compilation_is_in_queue(method, osr_bci)) {
|
|
return;
|
|
}
|
|
|
|
// We need to check again to see if the compilation has
|
|
// completed. A previous compilation may have registered
|
|
// some result.
|
|
if (compilation_is_complete(method, osr_bci, comp_level)) {
|
|
return;
|
|
}
|
|
|
|
// We now know that this compilation is not pending, complete,
|
|
// or prohibited. Assign a compile_id to this compilation
|
|
// and check to see if it is in our [Start..Stop) range.
|
|
uint compile_id = assign_compile_id(method, osr_bci);
|
|
if (compile_id == 0) {
|
|
// The compilation falls outside the allowed range.
|
|
return;
|
|
}
|
|
|
|
// Should this thread wait for completion of the compile?
|
|
blocking = is_compile_blocking(method, osr_bci);
|
|
|
|
// We will enter the compilation in the queue.
|
|
// 14012000: Note that this sets the queued_for_compile bits in
|
|
// the target method. We can now reason that a method cannot be
|
|
// queued for compilation more than once, as follows:
|
|
// Before a thread queues a task for compilation, it first acquires
|
|
// the compile queue lock, then checks if the method's queued bits
|
|
// are set or it has already been compiled. Thus there can not be two
|
|
// instances of a compilation task for the same method on the
|
|
// compilation queue. Consider now the case where the compilation
|
|
// thread has already removed a task for that method from the queue
|
|
// and is in the midst of compiling it. In this case, the
|
|
// queued_for_compile bits must be set in the method (and these
|
|
// will be visible to the current thread, since the bits were set
|
|
// under protection of the compile queue lock, which we hold now.
|
|
// When the compilation completes, the compiler thread first sets
|
|
// the compilation result and then clears the queued_for_compile
|
|
// bits. Neither of these actions are protected by a barrier (or done
|
|
// under the protection of a lock), so the only guarantee we have
|
|
// (on machines with TSO (Total Store Order)) is that these values
|
|
// will update in that order. As a result, the only combinations of
|
|
// these bits that the current thread will see are, in temporal order:
|
|
// <RESULT, QUEUE> :
|
|
// <0, 1> : in compile queue, but not yet compiled
|
|
// <1, 1> : compiled but queue bit not cleared
|
|
// <1, 0> : compiled and queue bit cleared
|
|
// Because we first check the queue bits then check the result bits,
|
|
// we are assured that we cannot introduce a duplicate task.
|
|
// Note that if we did the tests in the reverse order (i.e. check
|
|
// result then check queued bit), we could get the result bit before
|
|
// the compilation completed, and the queue bit after the compilation
|
|
// completed, and end up introducing a "duplicate" (redundant) task.
|
|
// In that case, the compiler thread should first check if a method
|
|
// has already been compiled before trying to compile it.
|
|
// NOTE: in the event that there are multiple compiler threads and
|
|
// there is de-optimization/recompilation, things will get hairy,
|
|
// and in that case it's best to protect both the testing (here) of
|
|
// these bits, and their updating (here and elsewhere) under a
|
|
// common lock.
|
|
task = create_compile_task(queue,
|
|
compile_id, method,
|
|
osr_bci, comp_level,
|
|
hot_method, hot_count, comment,
|
|
blocking);
|
|
}
|
|
|
|
if (blocking) {
|
|
wait_for_completion(task);
|
|
}
|
|
}
|
|
|
|
|
|
nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
|
|
int comp_level,
|
|
methodHandle hot_method, int hot_count,
|
|
const char* comment, TRAPS) {
|
|
// make sure arguments make sense
|
|
assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
|
|
assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
|
|
assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
|
|
assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized");
|
|
|
|
if (!TieredCompilation) {
|
|
comp_level = CompLevel_highest_tier;
|
|
}
|
|
|
|
// return quickly if possible
|
|
|
|
// lock, make sure that the compilation
|
|
// isn't prohibited in a straightforward way.
|
|
|
|
if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (osr_bci == InvocationEntryBci) {
|
|
// standard compilation
|
|
nmethod* method_code = method->code();
|
|
if (method_code != NULL) {
|
|
if (compilation_is_complete(method, osr_bci, comp_level)) {
|
|
return method_code;
|
|
}
|
|
}
|
|
if (method->is_not_compilable(comp_level)) return NULL;
|
|
|
|
if (UseCodeCacheFlushing) {
|
|
nmethod* saved = CodeCache::find_and_remove_saved_code(method());
|
|
if (saved != NULL) {
|
|
method->set_code(method, saved);
|
|
return saved;
|
|
}
|
|
}
|
|
|
|
} else {
|
|
// osr compilation
|
|
#ifndef TIERED
|
|
// seems like an assert of dubious value
|
|
assert(comp_level == CompLevel_highest_tier,
|
|
"all OSR compiles are assumed to be at a single compilation lavel");
|
|
#endif // TIERED
|
|
// We accept a higher level osr method
|
|
nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
|
|
if (nm != NULL) return nm;
|
|
if (method->is_not_osr_compilable()) return NULL;
|
|
}
|
|
|
|
assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
|
|
// some prerequisites that are compiler specific
|
|
if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) {
|
|
method->constants()->resolve_string_constants(CHECK_0);
|
|
// Resolve all classes seen in the signature of the method
|
|
// we are compiling.
|
|
methodOopDesc::load_signature_classes(method, CHECK_0);
|
|
}
|
|
|
|
// If the method is native, do the lookup in the thread requesting
|
|
// the compilation. Native lookups can load code, which is not
|
|
// permitted during compilation.
|
|
//
|
|
// Note: A native method implies non-osr compilation which is
|
|
// checked with an assertion at the entry of this method.
|
|
if (method->is_native()) {
|
|
bool in_base_library;
|
|
address adr = NativeLookup::lookup(method, in_base_library, THREAD);
|
|
if (HAS_PENDING_EXCEPTION) {
|
|
// In case of an exception looking up the method, we just forget
|
|
// about it. The interpreter will kick-in and throw the exception.
|
|
method->set_not_compilable(); // implies is_not_osr_compilable()
|
|
CLEAR_PENDING_EXCEPTION;
|
|
return NULL;
|
|
}
|
|
assert(method->has_native_function(), "must have native code by now");
|
|
}
|
|
|
|
// RedefineClasses() has replaced this method; just return
|
|
if (method->is_old()) {
|
|
return NULL;
|
|
}
|
|
|
|
// JVMTI -- post_compile_event requires jmethod_id() that may require
|
|
// a lock the compiling thread can not acquire. Prefetch it here.
|
|
if (JvmtiExport::should_post_compiled_method_load()) {
|
|
method->jmethod_id();
|
|
}
|
|
|
|
// If the compiler is shut off due to code cache flushing or otherwise,
|
|
// fail out now so blocking compiles dont hang the java thread
|
|
if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) {
|
|
CompilationPolicy::policy()->delay_compilation(method());
|
|
return NULL;
|
|
}
|
|
|
|
// do the compilation
|
|
if (method->is_native()) {
|
|
if (!PreferInterpreterNativeStubs) {
|
|
// Acquire our lock.
|
|
int compile_id;
|
|
{
|
|
MutexLocker locker(MethodCompileQueue_lock, THREAD);
|
|
compile_id = assign_compile_id(method, standard_entry_bci);
|
|
}
|
|
(void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
} else {
|
|
compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
|
|
}
|
|
|
|
// return requested nmethod
|
|
// We accept a higher level osr method
|
|
return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::compilation_is_complete
|
|
//
|
|
// See if compilation of this method is already complete.
|
|
bool CompileBroker::compilation_is_complete(methodHandle method,
|
|
int osr_bci,
|
|
int comp_level) {
|
|
bool is_osr = (osr_bci != standard_entry_bci);
|
|
if (is_osr) {
|
|
if (method->is_not_osr_compilable()) {
|
|
return true;
|
|
} else {
|
|
nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
|
|
return (result != NULL);
|
|
}
|
|
} else {
|
|
if (method->is_not_compilable(comp_level)) {
|
|
return true;
|
|
} else {
|
|
nmethod* result = method->code();
|
|
if (result == NULL) return false;
|
|
return comp_level == result->comp_level();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::compilation_is_in_queue
|
|
//
|
|
// See if this compilation is already requested.
|
|
//
|
|
// Implementation note: there is only a single "is in queue" bit
|
|
// for each method. This means that the check below is overly
|
|
// conservative in the sense that an osr compilation in the queue
|
|
// will block a normal compilation from entering the queue (and vice
|
|
// versa). This can be remedied by a full queue search to disambiguate
|
|
// cases. If it is deemed profitible, this may be done.
|
|
bool CompileBroker::compilation_is_in_queue(methodHandle method,
|
|
int osr_bci) {
|
|
return method->queued_for_compilation();
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::compilation_is_prohibited
|
|
//
|
|
// See if this compilation is not allowed.
|
|
bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
|
|
bool is_native = method->is_native();
|
|
// Some compilers may not support the compilation of natives.
|
|
if (is_native &&
|
|
(!CICompileNatives || !compiler(comp_level)->supports_native())) {
|
|
method->set_not_compilable_quietly(comp_level);
|
|
return true;
|
|
}
|
|
|
|
bool is_osr = (osr_bci != standard_entry_bci);
|
|
// Some compilers may not support on stack replacement.
|
|
if (is_osr &&
|
|
(!CICompileOSR || !compiler(comp_level)->supports_osr())) {
|
|
method->set_not_osr_compilable();
|
|
return true;
|
|
}
|
|
|
|
// The method may be explicitly excluded by the user.
|
|
bool quietly;
|
|
if (CompilerOracle::should_exclude(method, quietly)) {
|
|
if (!quietly) {
|
|
// This does not happen quietly...
|
|
ResourceMark rm;
|
|
tty->print("### Excluding %s:%s",
|
|
method->is_native() ? "generation of native wrapper" : "compile",
|
|
(method->is_static() ? " static" : ""));
|
|
method->print_short_name(tty);
|
|
tty->cr();
|
|
}
|
|
method->set_not_compilable_quietly();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::assign_compile_id
|
|
//
|
|
// Assign a serialized id number to this compilation request. If the
|
|
// number falls out of the allowed range, return a 0. OSR
|
|
// compilations may be numbered separately from regular compilations
|
|
// if certain debugging flags are used.
|
|
uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
|
|
assert(MethodCompileQueue_lock->owner() == Thread::current(),
|
|
"must hold the compilation queue lock");
|
|
bool is_osr = (osr_bci != standard_entry_bci);
|
|
uint id;
|
|
if (CICountOSR && is_osr) {
|
|
id = ++_osr_compilation_id;
|
|
if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
|
|
return id;
|
|
}
|
|
} else {
|
|
id = ++_compilation_id;
|
|
if ((uint)CIStart <= id && id < (uint)CIStop) {
|
|
return id;
|
|
}
|
|
}
|
|
|
|
// Method was not in the appropriate compilation range.
|
|
method->set_not_compilable_quietly();
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::is_compile_blocking
|
|
//
|
|
// Should the current thread be blocked until this compilation request
|
|
// has been fulfilled?
|
|
bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
|
|
assert(!instanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock");
|
|
return !BackgroundCompilation;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::preload_classes
|
|
void CompileBroker::preload_classes(methodHandle method, TRAPS) {
|
|
// Move this code over from c1_Compiler.cpp
|
|
ShouldNotReachHere();
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::create_compile_task
|
|
//
|
|
// Create a CompileTask object representing the current request for
|
|
// compilation. Add this task to the queue.
|
|
CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
|
|
int compile_id,
|
|
methodHandle method,
|
|
int osr_bci,
|
|
int comp_level,
|
|
methodHandle hot_method,
|
|
int hot_count,
|
|
const char* comment,
|
|
bool blocking) {
|
|
CompileTask* new_task = allocate_task();
|
|
new_task->initialize(compile_id, method, osr_bci, comp_level,
|
|
hot_method, hot_count, comment,
|
|
blocking);
|
|
queue->add(new_task);
|
|
return new_task;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::allocate_task
|
|
//
|
|
// Allocate a CompileTask, from the free list if possible.
|
|
CompileTask* CompileBroker::allocate_task() {
|
|
MutexLocker locker(CompileTaskAlloc_lock);
|
|
CompileTask* task = NULL;
|
|
if (_task_free_list != NULL) {
|
|
task = _task_free_list;
|
|
_task_free_list = task->next();
|
|
task->set_next(NULL);
|
|
} else {
|
|
task = new CompileTask();
|
|
task->set_next(NULL);
|
|
}
|
|
return task;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::free_task
|
|
//
|
|
// Add a task to the free list.
|
|
void CompileBroker::free_task(CompileTask* task) {
|
|
MutexLocker locker(CompileTaskAlloc_lock);
|
|
task->free();
|
|
task->set_next(_task_free_list);
|
|
_task_free_list = task;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::wait_for_completion
|
|
//
|
|
// Wait for the given method CompileTask to complete.
|
|
void CompileBroker::wait_for_completion(CompileTask* task) {
|
|
if (CIPrintCompileQueue) {
|
|
tty->print_cr("BLOCKING FOR COMPILE");
|
|
}
|
|
|
|
assert(task->is_blocking(), "can only wait on blocking task");
|
|
|
|
JavaThread *thread = JavaThread::current();
|
|
thread->set_blocked_on_compilation(true);
|
|
|
|
methodHandle method(thread,
|
|
(methodOop)JNIHandles::resolve(task->method_handle()));
|
|
{
|
|
MutexLocker waiter(task->lock(), thread);
|
|
|
|
while (!task->is_complete())
|
|
task->lock()->wait();
|
|
}
|
|
// It is harmless to check this status without the lock, because
|
|
// completion is a stable property (until the task object is recycled).
|
|
assert(task->is_complete(), "Compilation should have completed");
|
|
assert(task->code_handle() == NULL, "must be reset");
|
|
|
|
thread->set_blocked_on_compilation(false);
|
|
|
|
// By convention, the waiter is responsible for recycling a
|
|
// blocking CompileTask. Since there is only one waiter ever
|
|
// waiting on a CompileTask, we know that no one else will
|
|
// be using this CompileTask; we can free it.
|
|
free_task(task);
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::compiler_thread_loop
|
|
//
|
|
// The main loop run by a CompilerThread.
|
|
void CompileBroker::compiler_thread_loop() {
|
|
CompilerThread* thread = CompilerThread::current();
|
|
CompileQueue* queue = thread->queue();
|
|
|
|
// For the thread that initializes the ciObjectFactory
|
|
// this resource mark holds all the shared objects
|
|
ResourceMark rm;
|
|
|
|
// First thread to get here will initialize the compiler interface
|
|
|
|
if (!ciObjectFactory::is_initialized()) {
|
|
ASSERT_IN_VM;
|
|
MutexLocker only_one (CompileThread_lock, thread);
|
|
if (!ciObjectFactory::is_initialized()) {
|
|
ciObjectFactory::initialize();
|
|
}
|
|
}
|
|
|
|
// Open a log.
|
|
if (LogCompilation) {
|
|
init_compiler_thread_log();
|
|
}
|
|
CompileLog* log = thread->log();
|
|
if (log != NULL) {
|
|
log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
|
|
os::current_thread_id(),
|
|
os::current_process_id());
|
|
log->stamp();
|
|
log->end_elem();
|
|
}
|
|
|
|
while (true) {
|
|
{
|
|
// We need this HandleMark to avoid leaking VM handles.
|
|
HandleMark hm(thread);
|
|
|
|
if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) {
|
|
// the code cache is really full
|
|
handle_full_code_cache();
|
|
} else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) {
|
|
// Attempt to start cleaning the code cache while there is still a little headroom
|
|
NMethodSweeper::handle_full_code_cache(false);
|
|
}
|
|
|
|
CompileTask* task = queue->get();
|
|
|
|
// Give compiler threads an extra quanta. They tend to be bursty and
|
|
// this helps the compiler to finish up the job.
|
|
if( CompilerThreadHintNoPreempt )
|
|
os::hint_no_preempt();
|
|
|
|
// trace per thread time and compile statistics
|
|
CompilerCounters* counters = ((CompilerThread*)thread)->counters();
|
|
PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
|
|
|
|
// Assign the task to the current thread. Mark this compilation
|
|
// thread as active for the profiler.
|
|
CompileTaskWrapper ctw(task);
|
|
nmethodLocker result_handle; // (handle for the nmethod produced by this task)
|
|
task->set_code_handle(&result_handle);
|
|
methodHandle method(thread,
|
|
(methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
|
// Never compile a method if breakpoints are present in it
|
|
if (method()->number_of_breakpoints() == 0) {
|
|
// Compile the method.
|
|
if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
|
|
#ifdef COMPILER1
|
|
// Allow repeating compilations for the purpose of benchmarking
|
|
// compile speed. This is not useful for customers.
|
|
if (CompilationRepeat != 0) {
|
|
int compile_count = CompilationRepeat;
|
|
while (compile_count > 0) {
|
|
invoke_compiler_on_method(task);
|
|
nmethod* nm = method->code();
|
|
if (nm != NULL) {
|
|
nm->make_zombie();
|
|
method->clear_code();
|
|
}
|
|
compile_count--;
|
|
}
|
|
}
|
|
#endif /* COMPILER1 */
|
|
invoke_compiler_on_method(task);
|
|
} else {
|
|
// After compilation is disabled, remove remaining methods from queue
|
|
method->clear_queued_for_compilation();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::init_compiler_thread_log
|
|
//
|
|
// Set up state required by +LogCompilation.
|
|
void CompileBroker::init_compiler_thread_log() {
|
|
CompilerThread* thread = CompilerThread::current();
|
|
char fileBuf[4*K];
|
|
FILE* fp = NULL;
|
|
char* file = NULL;
|
|
intx thread_id = os::current_thread_id();
|
|
for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
|
|
const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
|
|
if (dir == NULL) {
|
|
jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log",
|
|
thread_id, os::current_process_id());
|
|
} else {
|
|
jio_snprintf(fileBuf, sizeof(fileBuf),
|
|
"%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
|
|
os::file_separator(), thread_id, os::current_process_id());
|
|
}
|
|
fp = fopen(fileBuf, "at");
|
|
if (fp != NULL) {
|
|
file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1);
|
|
strcpy(file, fileBuf);
|
|
break;
|
|
}
|
|
}
|
|
if (fp == NULL) {
|
|
warning("Cannot open log file: %s", fileBuf);
|
|
} else {
|
|
if (LogCompilation && Verbose)
|
|
tty->print_cr("Opening compilation log %s", file);
|
|
CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id);
|
|
thread->init_log(log);
|
|
|
|
if (xtty != NULL) {
|
|
ttyLocker ttyl;
|
|
|
|
// Record any per thread log files
|
|
xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::set_should_block
|
|
//
|
|
// Set _should_block.
|
|
// Call this from the VM, with Threads_lock held and a safepoint requested.
|
|
void CompileBroker::set_should_block() {
|
|
assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
|
|
assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
|
|
#ifndef PRODUCT
|
|
if (PrintCompilation && (Verbose || WizardMode))
|
|
tty->print_cr("notifying compiler thread pool to block");
|
|
#endif
|
|
_should_block = true;
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::maybe_block
|
|
//
|
|
// Call this from the compiler at convenient points, to poll for _should_block.
|
|
void CompileBroker::maybe_block() {
|
|
if (_should_block) {
|
|
#ifndef PRODUCT
|
|
if (PrintCompilation && (Verbose || WizardMode))
|
|
tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
|
|
#endif
|
|
ThreadInVMfromNative tivfn(JavaThread::current());
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::invoke_compiler_on_method
|
|
//
|
|
// Compile a method.
|
|
//
|
|
void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
|
|
if (PrintCompilation) {
|
|
ResourceMark rm;
|
|
task->print_line();
|
|
}
|
|
elapsedTimer time;
|
|
|
|
CompilerThread* thread = CompilerThread::current();
|
|
ResourceMark rm(thread);
|
|
|
|
// Common flags.
|
|
uint compile_id = task->compile_id();
|
|
int osr_bci = task->osr_bci();
|
|
bool is_osr = (osr_bci != standard_entry_bci);
|
|
bool should_log = (thread->log() != NULL);
|
|
bool should_break = false;
|
|
{
|
|
// create the handle inside it's own block so it can't
|
|
// accidentally be referenced once the thread transitions to
|
|
// native. The NoHandleMark before the transition should catch
|
|
// any cases where this occurs in the future.
|
|
methodHandle method(thread,
|
|
(methodOop)JNIHandles::resolve(task->method_handle()));
|
|
should_break = check_break_at(method, compile_id, is_osr);
|
|
if (should_log && !CompilerOracle::should_log(method)) {
|
|
should_log = false;
|
|
}
|
|
assert(!method->is_native(), "no longer compile natives");
|
|
|
|
// Save information about this method in case of failure.
|
|
set_last_compile(thread, method, is_osr, task->comp_level());
|
|
|
|
DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
|
|
}
|
|
|
|
// Allocate a new set of JNI handles.
|
|
push_jni_handle_block();
|
|
jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle()));
|
|
int compilable = ciEnv::MethodCompilable;
|
|
{
|
|
int system_dictionary_modification_counter;
|
|
{
|
|
MutexLocker locker(Compile_lock, thread);
|
|
system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
|
|
}
|
|
|
|
NoHandleMark nhm;
|
|
ThreadToNativeFromVM ttn(thread);
|
|
|
|
ciEnv ci_env(task, system_dictionary_modification_counter);
|
|
if (should_break) {
|
|
ci_env.set_break_at_compile(true);
|
|
}
|
|
if (should_log) {
|
|
ci_env.set_log(thread->log());
|
|
}
|
|
assert(thread->env() == &ci_env, "set by ci_env");
|
|
// The thread-env() field is cleared in ~CompileTaskWrapper.
|
|
|
|
// Cache Jvmti state
|
|
ci_env.cache_jvmti_state();
|
|
|
|
// Cache DTrace flags
|
|
ci_env.cache_dtrace_flags();
|
|
|
|
ciMethod* target = ci_env.get_method_from_handle(target_handle);
|
|
|
|
TraceTime t1("compilation", &time);
|
|
|
|
compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
|
|
|
|
if (!ci_env.failing() && task->code() == NULL) {
|
|
//assert(false, "compiler should always document failure");
|
|
// The compiler elected, without comment, not to register a result.
|
|
// Do not attempt further compilations of this method.
|
|
ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
|
|
}
|
|
|
|
if (ci_env.failing()) {
|
|
// Copy this bit to the enclosing block:
|
|
compilable = ci_env.compilable();
|
|
if (PrintCompilation) {
|
|
const char* reason = ci_env.failure_reason();
|
|
if (compilable == ciEnv::MethodCompilable_not_at_tier) {
|
|
tty->print_cr("%4d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason);
|
|
} else if (compilable == ciEnv::MethodCompilable_never) {
|
|
tty->print_cr("%4d COMPILE SKIPPED: %s (not retryable)", compile_id, reason);
|
|
} else if (compilable == ciEnv::MethodCompilable) {
|
|
tty->print_cr("%4d COMPILE SKIPPED: %s", compile_id, reason);
|
|
}
|
|
}
|
|
} else {
|
|
task->mark_success();
|
|
task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
|
|
}
|
|
}
|
|
pop_jni_handle_block();
|
|
|
|
methodHandle method(thread,
|
|
(methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
|
DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
|
|
|
|
collect_statistics(thread, time, task);
|
|
|
|
if (PrintCompilation && PrintCompilation2) {
|
|
tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp
|
|
tty->print("%4d ", compile_id); // print compilation number
|
|
tty->print("%s ", (is_osr ? "%" : " "));
|
|
int code_size = (task->code() == NULL) ? 0 : task->code()->total_size();
|
|
tty->print_cr("size: %d time: %d inlined: %d bytes", code_size, (int)time.milliseconds(), task->num_inlined_bytecodes());
|
|
}
|
|
|
|
if (compilable == ciEnv::MethodCompilable_never) {
|
|
if (is_osr) {
|
|
method->set_not_osr_compilable();
|
|
} else {
|
|
method->set_not_compilable_quietly();
|
|
}
|
|
} else if (compilable == ciEnv::MethodCompilable_not_at_tier) {
|
|
method->set_not_compilable_quietly(task->comp_level());
|
|
}
|
|
|
|
// Note that the queued_for_compilation bits are cleared without
|
|
// protection of a mutex. [They were set by the requester thread,
|
|
// when adding the task to the complie queue -- at which time the
|
|
// compile queue lock was held. Subsequently, we acquired the compile
|
|
// queue lock to get this task off the compile queue; thus (to belabour
|
|
// the point somewhat) our clearing of the bits must be occurring
|
|
// only after the setting of the bits. See also 14012000 above.
|
|
method->clear_queued_for_compilation();
|
|
|
|
#ifdef ASSERT
|
|
if (CollectedHeap::fired_fake_oom()) {
|
|
// The current compile received a fake OOM during compilation so
|
|
// go ahead and exit the VM since the test apparently succeeded
|
|
tty->print_cr("*** Shutting down VM after successful fake OOM");
|
|
vm_exit(0);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::handle_full_code_cache
|
|
//
|
|
// The CodeCache is full. Print out warning and disable compilation or
|
|
// try code cache cleaning so compilation can continue later.
|
|
void CompileBroker::handle_full_code_cache() {
|
|
UseInterpreter = true;
|
|
if (UseCompiler || AlwaysCompileLoopMethods ) {
|
|
if (xtty != NULL) {
|
|
stringStream s;
|
|
// Dump code cache state into a buffer before locking the tty,
|
|
// because log_state() will use locks causing lock conflicts.
|
|
CodeCache::log_state(&s);
|
|
// Lock to prevent tearing
|
|
ttyLocker ttyl;
|
|
xtty->begin_elem("code_cache_full");
|
|
xtty->print(s.as_string());
|
|
xtty->stamp();
|
|
xtty->end_elem();
|
|
}
|
|
warning("CodeCache is full. Compiler has been disabled.");
|
|
warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
|
|
CodeCache::print_bounds(tty);
|
|
#ifndef PRODUCT
|
|
if (CompileTheWorld || ExitOnFullCodeCache) {
|
|
before_exit(JavaThread::current());
|
|
exit_globals(); // will delete tty
|
|
vm_direct_exit(CompileTheWorld ? 0 : 1);
|
|
}
|
|
#endif
|
|
if (UseCodeCacheFlushing) {
|
|
NMethodSweeper::handle_full_code_cache(true);
|
|
} else {
|
|
UseCompiler = false;
|
|
AlwaysCompileLoopMethods = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::set_last_compile
|
|
//
|
|
// Record this compilation for debugging purposes.
|
|
void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
|
|
ResourceMark rm;
|
|
char* method_name = method->name()->as_C_string();
|
|
strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
|
|
char current_method[CompilerCounters::cmname_buffer_length];
|
|
size_t maxLen = CompilerCounters::cmname_buffer_length;
|
|
|
|
if (UsePerfData) {
|
|
const char* class_name = method->method_holder()->klass_part()->name()->as_C_string();
|
|
|
|
size_t s1len = strlen(class_name);
|
|
size_t s2len = strlen(method_name);
|
|
|
|
// check if we need to truncate the string
|
|
if (s1len + s2len + 2 > maxLen) {
|
|
|
|
// the strategy is to lop off the leading characters of the
|
|
// class name and the trailing characters of the method name.
|
|
|
|
if (s2len + 2 > maxLen) {
|
|
// lop of the entire class name string, let snprintf handle
|
|
// truncation of the method name.
|
|
class_name += s1len; // null string
|
|
}
|
|
else {
|
|
// lop off the extra characters from the front of the class name
|
|
class_name += ((s1len + s2len + 2) - maxLen);
|
|
}
|
|
}
|
|
|
|
jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
|
|
}
|
|
|
|
if (CICountOSR && is_osr) {
|
|
_last_compile_type = osr_compile;
|
|
} else {
|
|
_last_compile_type = normal_compile;
|
|
}
|
|
_last_compile_level = comp_level;
|
|
|
|
if (UsePerfData) {
|
|
CompilerCounters* counters = thread->counters();
|
|
counters->set_current_method(current_method);
|
|
counters->set_compile_type((jlong)_last_compile_type);
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::push_jni_handle_block
|
|
//
|
|
// Push on a new block of JNI handles.
|
|
void CompileBroker::push_jni_handle_block() {
|
|
JavaThread* thread = JavaThread::current();
|
|
|
|
// Allocate a new block for JNI handles.
|
|
// Inlined code from jni_PushLocalFrame()
|
|
JNIHandleBlock* java_handles = thread->active_handles();
|
|
JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
|
|
assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
|
|
compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
|
|
thread->set_active_handles(compile_handles);
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::pop_jni_handle_block
|
|
//
|
|
// Pop off the current block of JNI handles.
|
|
void CompileBroker::pop_jni_handle_block() {
|
|
JavaThread* thread = JavaThread::current();
|
|
|
|
// Release our JNI handle block
|
|
JNIHandleBlock* compile_handles = thread->active_handles();
|
|
JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
|
|
thread->set_active_handles(java_handles);
|
|
compile_handles->set_pop_frame_link(NULL);
|
|
JNIHandleBlock::release_block(compile_handles, thread); // may block
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::check_break_at
|
|
//
|
|
// Should the compilation break at the current compilation.
|
|
bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
|
|
if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
|
|
return true;
|
|
} else if( CompilerOracle::should_break_at(method) ) { // break when compiling
|
|
return true;
|
|
} else {
|
|
return (compile_id == CIBreakAt);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
// CompileBroker::collect_statistics
|
|
//
|
|
// Collect statistics about the compilation.
|
|
|
|
void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
|
|
bool success = task->is_success();
|
|
methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle()));
|
|
uint compile_id = task->compile_id();
|
|
bool is_osr = (task->osr_bci() != standard_entry_bci);
|
|
nmethod* code = task->code();
|
|
CompilerCounters* counters = thread->counters();
|
|
|
|
assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
|
|
MutexLocker locker(CompileStatistics_lock);
|
|
|
|
// _perf variables are production performance counters which are
|
|
// updated regardless of the setting of the CITime and CITimeEach flags
|
|
//
|
|
if (!success) {
|
|
_total_bailout_count++;
|
|
if (UsePerfData) {
|
|
_perf_last_failed_method->set_value(counters->current_method());
|
|
_perf_last_failed_type->set_value(counters->compile_type());
|
|
_perf_total_bailout_count->inc();
|
|
}
|
|
} else if (code == NULL) {
|
|
if (UsePerfData) {
|
|
_perf_last_invalidated_method->set_value(counters->current_method());
|
|
_perf_last_invalidated_type->set_value(counters->compile_type());
|
|
_perf_total_invalidated_count->inc();
|
|
}
|
|
_total_invalidated_count++;
|
|
} else {
|
|
// Compilation succeeded
|
|
|
|
// update compilation ticks - used by the implementation of
|
|
// java.lang.management.CompilationMBean
|
|
_perf_total_compilation->inc(time.ticks());
|
|
|
|
if (CITime) {
|
|
_t_total_compilation.add(time);
|
|
if (is_osr) {
|
|
_t_osr_compilation.add(time);
|
|
_sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
|
|
} else {
|
|
_t_standard_compilation.add(time);
|
|
_sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
|
|
}
|
|
}
|
|
|
|
if (UsePerfData) {
|
|
// save the name of the last method compiled
|
|
_perf_last_method->set_value(counters->current_method());
|
|
_perf_last_compile_type->set_value(counters->compile_type());
|
|
_perf_last_compile_size->set_value(method->code_size() +
|
|
task->num_inlined_bytecodes());
|
|
if (is_osr) {
|
|
_perf_osr_compilation->inc(time.ticks());
|
|
_perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
|
|
} else {
|
|
_perf_standard_compilation->inc(time.ticks());
|
|
_perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
|
|
}
|
|
}
|
|
|
|
if (CITimeEach) {
|
|
float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
|
|
tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
|
|
compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
|
|
}
|
|
|
|
// Collect counts of successful compilations
|
|
_sum_nmethod_size += code->total_size();
|
|
_sum_nmethod_code_size += code->insts_size();
|
|
_total_compile_count++;
|
|
|
|
if (UsePerfData) {
|
|
_perf_sum_nmethod_size->inc( code->total_size());
|
|
_perf_sum_nmethod_code_size->inc(code->insts_size());
|
|
_perf_total_compile_count->inc();
|
|
}
|
|
|
|
if (is_osr) {
|
|
if (UsePerfData) _perf_total_osr_compile_count->inc();
|
|
_total_osr_compile_count++;
|
|
} else {
|
|
if (UsePerfData) _perf_total_standard_compile_count->inc();
|
|
_total_standard_compile_count++;
|
|
}
|
|
}
|
|
// set the current method for the thread to null
|
|
if (UsePerfData) counters->set_current_method("");
|
|
}
|
|
|
|
|
|
|
|
void CompileBroker::print_times() {
|
|
tty->cr();
|
|
tty->print_cr("Accumulated compiler times (for compiled methods only)");
|
|
tty->print_cr("------------------------------------------------");
|
|
//0000000000111111111122222222223333333333444444444455555555556666666666
|
|
//0123456789012345678901234567890123456789012345678901234567890123456789
|
|
tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
|
|
tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
|
|
CompileBroker::_t_standard_compilation.seconds(),
|
|
CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
|
|
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);
|
|
|
|
if (compiler(CompLevel_simple) != NULL) {
|
|
compiler(CompLevel_simple)->print_timers();
|
|
}
|
|
if (compiler(CompLevel_full_optimization) != NULL) {
|
|
compiler(CompLevel_full_optimization)->print_timers();
|
|
}
|
|
tty->cr();
|
|
int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
|
|
tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
|
|
tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
|
|
tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
|
|
int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
|
|
tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
|
|
tty->cr();
|
|
tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
|
|
tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
|
|
}
|
|
|
|
|
|
// Debugging output for failure
|
|
void CompileBroker::print_last_compile() {
|
|
if ( _last_compile_level != CompLevel_none &&
|
|
compiler(_last_compile_level) != NULL &&
|
|
_last_method_compiled != NULL &&
|
|
_last_compile_type != no_compile) {
|
|
if (_last_compile_type == osr_compile) {
|
|
tty->print_cr("Last parse: [osr]%d+++(%d) %s",
|
|
_osr_compilation_id, _last_compile_level, _last_method_compiled);
|
|
} else {
|
|
tty->print_cr("Last parse: %d+++(%d) %s",
|
|
_compilation_id, _last_compile_level, _last_method_compiled);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void CompileBroker::print_compiler_threads_on(outputStream* st) {
|
|
#ifndef PRODUCT
|
|
st->print_cr("Compiler thread printing unimplemented.");
|
|
st->cr();
|
|
#endif
|
|
}
|