Mercurial > hg > graal-compiler
view src/share/vm/compiler/compileBroker.hpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children | 06f017f7daa7 3d58a4983660 |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_COMPILER_COMPILEBROKER_HPP #define SHARE_VM_COMPILER_COMPILEBROKER_HPP #include "ci/compilerInterface.hpp" #include "compiler/abstractCompiler.hpp" #include "runtime/perfData.hpp" class nmethod; class nmethodLocker; // CompileTask // // An entry in the compile queue. It represents a pending or current // compilation. class CompileTask : public CHeapObj { private: Monitor* _lock; uint _compile_id; jobject _method; int _osr_bci; bool _is_complete; bool _is_success; bool _is_blocking; int _comp_level; int _num_inlined_bytecodes; nmethodLocker* _code_handle; // holder of eventual result CompileTask* _next, *_prev; // Fields used for logging why the compilation was initiated: jlong _time_queued; // in units of os::elapsed_counter() jobject _hot_method; // which method actually triggered this task int _hot_count; // information about its invocation counter const char* _comment; // more info about the task void print_compilation(outputStream *st, methodOop method, char* method_name); public: CompileTask() { _lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock"); } void initialize(int compile_id, methodHandle method, int osr_bci, int comp_level, methodHandle hot_method, int hot_count, const char* comment, bool is_blocking); void free(); int compile_id() const { return _compile_id; } jobject method_handle() const { return _method; } int osr_bci() const { return _osr_bci; } bool is_complete() const { return _is_complete; } bool is_blocking() const { return _is_blocking; } bool is_success() const { return _is_success; } nmethodLocker* code_handle() const { return _code_handle; } void set_code_handle(nmethodLocker* l) { _code_handle = l; } nmethod* code() const; // _code_handle->code() void set_code(nmethod* nm); // _code_handle->set_code(nm) Monitor* lock() const { return _lock; } void mark_complete() { _is_complete = true; } void mark_success() { _is_success = true; } int comp_level() { return _comp_level;} void set_comp_level(int comp_level) { _comp_level = comp_level;} int num_inlined_bytecodes() const { return _num_inlined_bytecodes; } void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; } CompileTask* next() const { return _next; } void set_next(CompileTask* next) { _next = next; } CompileTask* prev() const { return _prev; } void set_prev(CompileTask* prev) { _prev = prev; } void print(); void print_line(); void print_line_on_error(outputStream* st, char* buf, int buflen); void log_task(xmlStream* log); void log_task_queued(); void log_task_start(CompileLog* log); void log_task_done(CompileLog* log); }; // CompilerCounters // // Per Compiler Performance Counters. // class CompilerCounters : public CHeapObj { public: enum { cmname_buffer_length = 160 }; private: char _current_method[cmname_buffer_length]; PerfStringVariable* _perf_current_method; int _compile_type; PerfVariable* _perf_compile_type; PerfCounter* _perf_time; PerfCounter* _perf_compiles; public: CompilerCounters(const char* name, int instance, TRAPS); // these methods should be called in a thread safe context void set_current_method(const char* method) { strncpy(_current_method, method, (size_t)cmname_buffer_length); if (UsePerfData) _perf_current_method->set_value(method); } char* current_method() { return _current_method; } void set_compile_type(int compile_type) { _compile_type = compile_type; if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type); } int compile_type() { return _compile_type; } PerfCounter* time_counter() { return _perf_time; } PerfCounter* compile_counter() { return _perf_compiles; } }; // CompileQueue // // A list of CompileTasks. class CompileQueue : public CHeapObj { private: const char* _name; Monitor* _lock; CompileTask* _first; CompileTask* _last; int _size; public: CompileQueue(const char* name, Monitor* lock) { _name = name; _lock = lock; _first = NULL; _last = NULL; _size = 0; } const char* name() const { return _name; } Monitor* lock() const { return _lock; } void add(CompileTask* task); void remove(CompileTask* task); CompileTask* first() { return _first; } CompileTask* last() { return _last; } CompileTask* get(); bool is_empty() const { return _first == NULL; } int size() const { return _size; } void print(); }; // CompileTaskWrapper // // Assign this task to the current thread. Deallocate the task // when the compilation is complete. class CompileTaskWrapper : StackObj { public: CompileTaskWrapper(CompileTask* task); ~CompileTaskWrapper(); }; // Compilation // // The broker for all compilation requests. class CompileBroker: AllStatic { friend class Threads; friend class CompileTaskWrapper; public: enum { name_buffer_length = 100 }; // Compile type Information for print_last_compile() and CompilerCounters enum { no_compile, normal_compile, osr_compile, native_compile }; private: static bool _initialized; static volatile bool _should_block; // This flag can be used to stop compilation or turn it back on static volatile jint _should_compile_new_jobs; // The installed compiler(s) static AbstractCompiler* _compilers[2]; // These counters are used for assigning id's to each compilation static uint _compilation_id; static uint _osr_compilation_id; static uint _native_compilation_id; static int _last_compile_type; static int _last_compile_level; static char _last_method_compiled[name_buffer_length]; static CompileQueue* _c2_method_queue; static CompileQueue* _c1_method_queue; static CompileTask* _task_free_list; static GrowableArray<CompilerThread*>* _method_threads; // performance counters static PerfCounter* _perf_total_compilation; static PerfCounter* _perf_native_compilation; static PerfCounter* _perf_osr_compilation; static PerfCounter* _perf_standard_compilation; static PerfCounter* _perf_total_bailout_count; static PerfCounter* _perf_total_invalidated_count; static PerfCounter* _perf_total_compile_count; static PerfCounter* _perf_total_native_compile_count; static PerfCounter* _perf_total_osr_compile_count; static PerfCounter* _perf_total_standard_compile_count; static PerfCounter* _perf_sum_osr_bytes_compiled; static PerfCounter* _perf_sum_standard_bytes_compiled; static PerfCounter* _perf_sum_nmethod_size; static PerfCounter* _perf_sum_nmethod_code_size; static PerfStringVariable* _perf_last_method; static PerfStringVariable* _perf_last_failed_method; static PerfStringVariable* _perf_last_invalidated_method; static PerfVariable* _perf_last_compile_type; static PerfVariable* _perf_last_compile_size; static PerfVariable* _perf_last_failed_type; static PerfVariable* _perf_last_invalidated_type; // Timers and counters for generating statistics static elapsedTimer _t_total_compilation; static elapsedTimer _t_osr_compilation; static elapsedTimer _t_standard_compilation; static int _total_bailout_count; static int _total_invalidated_count; static int _total_compile_count; static int _total_native_compile_count; static int _total_osr_compile_count; static int _total_standard_compile_count; static int _sum_osr_bytes_compiled; static int _sum_standard_bytes_compiled; static int _sum_nmethod_size; static int _sum_nmethod_code_size; static CompilerThread* make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS); static void init_compiler_threads(int c1_compiler_count, int c2_compiler_count); static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level); static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level); static uint assign_compile_id (methodHandle method, int osr_bci); static bool is_compile_blocking (methodHandle method, int osr_bci); static void preload_classes (methodHandle method, TRAPS); static CompileTask* 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); static CompileTask* allocate_task(); static void free_task(CompileTask* task); static void wait_for_completion(CompileTask* task); static void invoke_compiler_on_method(CompileTask* task); static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level); static void push_jni_handle_block(); static void pop_jni_handle_block(); static bool check_break_at(methodHandle method, int compile_id, bool is_osr); static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task); static void compile_method_base(methodHandle method, int osr_bci, int comp_level, methodHandle hot_method, int hot_count, const char* comment, TRAPS); static CompileQueue* compile_queue(int comp_level) { if (is_c2_compile(comp_level)) return _c2_method_queue; if (is_c1_compile(comp_level)) return _c1_method_queue; return NULL; } public: enum { // The entry bci used for non-OSR compilations. standard_entry_bci = InvocationEntryBci }; static AbstractCompiler* compiler(int comp_level) { if (is_c2_compile(comp_level)) return _compilers[1]; // C2 if (is_c1_compile(comp_level)) return _compilers[0]; // C1 return NULL; } static bool compilation_is_in_queue(methodHandle method, int osr_bci); static int queue_size(int comp_level) { CompileQueue *q = compile_queue(comp_level); return q != NULL ? q->size() : 0; } static void compilation_init(); static void init_compiler_thread_log(); static nmethod* compile_method(methodHandle method, int osr_bci, int comp_level, methodHandle hot_method, int hot_count, const char* comment, TRAPS); static void compiler_thread_loop(); static uint get_compilation_id() { return _compilation_id; } static bool is_idle(); // Set _should_block. // Call this from the VM, with Threads_lock held and a safepoint requested. static void set_should_block(); // Call this from the compiler at convenient points, to poll for _should_block. static void maybe_block(); enum { // Flags for toggling compiler activity stop_compilation = 0, run_compilation = 1 }; static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); } static bool set_should_compile_new_jobs(jint new_state) { // Return success if the current caller set it jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state); return (old == (1-new_state)); } static void handle_full_code_cache(); // Return total compilation ticks static jlong total_compilation_ticks() { return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0; } // Print a detailed accounting of compilation time static void print_times(); // Debugging output for failure static void print_last_compile(); static void print_compiler_threads_on(outputStream* st); }; #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP