/* * Copyright 1999-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ 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; // 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 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; } 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; public: CompileQueue(const char* name, Monitor* lock) { _name = name; _lock = lock; _first = NULL; _last = NULL; } const char* name() const { return _name; } Monitor* lock() const { return _lock; } void add(CompileTask* task); CompileTask* get(); bool is_empty() const { return _first == NULL; } void print(); }; // 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* _method_queue; static CompileTask* _task_free_list; static GrowableArray* _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 int compiler_count() { return CICompilerCountPerCPU // Example: if CICompilerCountPerCPU is true, then we get // max(log2(8)-1,1) = 2 compiler threads on an 8-way machine. // May help big-app startup time. ? (MAX2(log2_intptr(os::active_processor_count())-1,1)) : CICompilerCount; } static CompilerThread* make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS); static void init_compiler_threads(int compiler_count); static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level); static bool compilation_is_in_queue (methodHandle method, int osr_bci); 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); public: enum { // The entry bci used for non-OSR compilations. standard_entry_bci = InvocationEntryBci }; static AbstractCompiler* compiler(int level ) { if (level == CompLevel_fast_compile) return _compilers[0]; assert(level == CompLevel_highest_tier, "what level?"); return _compilers[1]; } static void compilation_init(); static void init_compiler_thread_log(); static nmethod* compile_method(methodHandle method, int osr_bci, 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); };