1 /* 2 * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_COMPILER_COMPILEBROKER_HPP 26 #define SHARE_VM_COMPILER_COMPILEBROKER_HPP 27 28 #include "ci/compilerInterface.hpp" 29 #include "compiler/abstractCompiler.hpp" 30 #include "compiler/compileTask.hpp" 31 #include "runtime/perfData.hpp" 32 #include "trace/tracing.hpp" 33 34 class nmethod; 35 class nmethodLocker; 36 37 // CompilerCounters 38 // 39 // Per Compiler Performance Counters. 40 // 41 class CompilerCounters : public CHeapObj<mtCompiler> { 42 43 public: 44 enum { 45 cmname_buffer_length = 160 46 }; 47 48 private: 49 50 char _current_method[cmname_buffer_length]; 51 PerfStringVariable* _perf_current_method; 52 53 int _compile_type; 54 PerfVariable* _perf_compile_type; 55 56 PerfCounter* _perf_time; 57 PerfCounter* _perf_compiles; 58 59 public: 60 CompilerCounters(const char* name, int instance, TRAPS); 61 62 // these methods should be called in a thread safe context 63 64 void set_current_method(const char* method) { 65 strncpy(_current_method, method, (size_t)cmname_buffer_length-1); 66 _current_method[cmname_buffer_length-1] = '\0'; 67 if (UsePerfData) _perf_current_method->set_value(method); 68 } 69 70 char* current_method() { return _current_method; } 71 72 void set_compile_type(int compile_type) { 73 _compile_type = compile_type; 74 if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type); 75 } 76 77 int compile_type() { return _compile_type; } 78 79 PerfCounter* time_counter() { return _perf_time; } 80 PerfCounter* compile_counter() { return _perf_compiles; } 81 }; 82 83 // CompileQueue 84 // 85 // A list of CompileTasks. 86 class CompileQueue : public CHeapObj<mtCompiler> { 87 private: 88 const char* _name; 89 90 CompileTask* _first; 91 CompileTask* _last; 92 93 CompileTask* _first_stale; 94 95 int _size; 96 97 void purge_stale_tasks(); 98 public: 99 CompileQueue(const char* name) { 100 _name = name; 101 _first = NULL; 102 _last = NULL; 103 _size = 0; 104 _first_stale = NULL; 105 } 106 107 const char* name() const { return _name; } 108 109 void add(CompileTask* task); 110 void remove(CompileTask* task); 111 void remove_and_mark_stale(CompileTask* task); 112 CompileTask* first() { return _first; } 113 CompileTask* last() { return _last; } 114 115 CompileTask* get(); 116 117 bool is_empty() const { return _first == NULL; } 118 int size() const { return _size; } 119 120 121 // Redefine Classes support 122 void mark_on_stack(); 123 void free_all(); 124 void print_tty(); 125 void print(outputStream* st = tty); 126 127 ~CompileQueue() { 128 assert (is_empty(), " Compile Queue must be empty"); 129 } 130 }; 131 132 // CompileTaskWrapper 133 // 134 // Assign this task to the current thread. Deallocate the task 135 // when the compilation is complete. 136 class CompileTaskWrapper : StackObj { 137 public: 138 CompileTaskWrapper(CompileTask* task); 139 ~CompileTaskWrapper(); 140 }; 141 142 143 // Compilation 144 // 145 // The broker for all compilation requests. 146 class CompileBroker: AllStatic { 147 friend class Threads; 148 friend class CompileTaskWrapper; 149 150 public: 151 enum { 152 name_buffer_length = 100 153 }; 154 155 // Compile type Information for print_last_compile() and CompilerCounters 156 enum { no_compile, normal_compile, osr_compile, native_compile }; 157 static int assign_compile_id (methodHandle method, int osr_bci); 158 159 160 private: 161 static bool _initialized; 162 static volatile bool _should_block; 163 164 // This flag can be used to stop compilation or turn it back on 165 static volatile jint _should_compile_new_jobs; 166 167 // The installed compiler(s) 168 static AbstractCompiler* _compilers[2]; 169 170 // These counters are used for assigning id's to each compilation 171 static volatile jint _compilation_id; 172 static volatile jint _osr_compilation_id; 173 174 static int _last_compile_type; 175 static int _last_compile_level; 176 static char _last_method_compiled[name_buffer_length]; 177 178 static CompileQueue* _c2_compile_queue; 179 static CompileQueue* _c1_compile_queue; 180 181 // performance counters 182 static PerfCounter* _perf_total_compilation; 183 static PerfCounter* _perf_native_compilation; 184 static PerfCounter* _perf_osr_compilation; 185 static PerfCounter* _perf_standard_compilation; 186 187 static PerfCounter* _perf_total_bailout_count; 188 static PerfCounter* _perf_total_invalidated_count; 189 static PerfCounter* _perf_total_compile_count; 190 static PerfCounter* _perf_total_native_compile_count; 191 static PerfCounter* _perf_total_osr_compile_count; 192 static PerfCounter* _perf_total_standard_compile_count; 193 194 static PerfCounter* _perf_sum_osr_bytes_compiled; 195 static PerfCounter* _perf_sum_standard_bytes_compiled; 196 static PerfCounter* _perf_sum_nmethod_size; 197 static PerfCounter* _perf_sum_nmethod_code_size; 198 199 static PerfStringVariable* _perf_last_method; 200 static PerfStringVariable* _perf_last_failed_method; 201 static PerfStringVariable* _perf_last_invalidated_method; 202 static PerfVariable* _perf_last_compile_type; 203 static PerfVariable* _perf_last_compile_size; 204 static PerfVariable* _perf_last_failed_type; 205 static PerfVariable* _perf_last_invalidated_type; 206 207 // Timers and counters for generating statistics 208 static elapsedTimer _t_total_compilation; 209 static elapsedTimer _t_osr_compilation; 210 static elapsedTimer _t_standard_compilation; 211 static elapsedTimer _t_invalidated_compilation; 212 static elapsedTimer _t_bailedout_compilation; 213 214 static int _total_compile_count; 215 static int _total_bailout_count; 216 static int _total_invalidated_count; 217 static int _total_native_compile_count; 218 static int _total_osr_compile_count; 219 static int _total_standard_compile_count; 220 static int _sum_osr_bytes_compiled; 221 static int _sum_standard_bytes_compiled; 222 static int _sum_nmethod_size; 223 static int _sum_nmethod_code_size; 224 static long _peak_compilation_time; 225 226 static volatile jint _print_compilation_warning; 227 228 static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS); 229 static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count); 230 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level); 231 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level); 232 static bool is_compile_blocking(); 233 static void preload_classes (methodHandle method, TRAPS); 234 235 static CompileTask* create_compile_task(CompileQueue* queue, 236 int compile_id, 237 methodHandle method, 238 int osr_bci, 239 int comp_level, 240 methodHandle hot_method, 241 int hot_count, 242 const char* comment, 243 bool blocking); 244 static void wait_for_completion(CompileTask* task); 245 246 static void invoke_compiler_on_method(CompileTask* task); 247 static void post_compile(CompilerThread* thread, CompileTask* task, EventCompilation& event, bool success, ciEnv* ci_env); 248 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level); 249 static void push_jni_handle_block(); 250 static void pop_jni_handle_block(); 251 static bool check_break_at(methodHandle method, int compile_id, bool is_osr); 252 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task); 253 254 static void compile_method_base(methodHandle method, 255 int osr_bci, 256 int comp_level, 257 methodHandle hot_method, 258 int hot_count, 259 const char* comment, 260 Thread* thread); 261 262 static CompileQueue* compile_queue(int comp_level); 263 static bool init_compiler_runtime(); 264 static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread); 265 266 public: 267 enum { 268 // The entry bci used for non-OSR compilations. 269 standard_entry_bci = InvocationEntryBci 270 }; 271 272 static AbstractCompiler* compiler(int comp_level) { 273 if (is_c2_compile(comp_level)) return _compilers[1]; // C2 274 if (is_c1_compile(comp_level)) return _compilers[0]; // C1 275 return NULL; 276 } 277 278 static bool compilation_is_in_queue(methodHandle method); 279 static void print_compile_queues(outputStream* st); 280 static int queue_size(int comp_level) { 281 CompileQueue *q = compile_queue(comp_level); 282 return q != NULL ? q->size() : 0; 283 } 284 static void compilation_init(); 285 static void init_compiler_thread_log(); 286 static nmethod* compile_method(methodHandle method, 287 int osr_bci, 288 int comp_level, 289 methodHandle hot_method, 290 int hot_count, 291 const char* comment, Thread* thread); 292 293 // Acquire any needed locks and assign a compile id 294 static uint assign_compile_id_unlocked(Thread* thread, methodHandle method, int osr_bci); 295 296 static void compiler_thread_loop(); 297 static uint get_compilation_id() { return _compilation_id; } 298 299 // Set _should_block. 300 // Call this from the VM, with Threads_lock held and a safepoint requested. 301 static void set_should_block(); 302 303 // Call this from the compiler at convenient points, to poll for _should_block. 304 static void maybe_block(); 305 306 enum { 307 // Flags for toggling compiler activity 308 stop_compilation = 0, 309 run_compilation = 1, 310 shutdown_compilaton = 2 311 }; 312 313 static jint get_compilation_activity_mode() { return _should_compile_new_jobs; } 314 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); } 315 static bool set_should_compile_new_jobs(jint new_state) { 316 // Return success if the current caller set it 317 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state); 318 return (old == (1-new_state)); 319 } 320 321 static void disable_compilation_forever() { 322 UseCompiler = false; 323 AlwaysCompileLoopMethods = false; 324 Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs); 325 } 326 327 static bool is_compilation_disabled_forever() { 328 return _should_compile_new_jobs == shutdown_compilaton; 329 } 330 static void handle_full_code_cache(int code_blob_type); 331 // Ensures that warning is only printed once. 332 static bool should_print_compiler_warning() { 333 jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0); 334 return old == 0; 335 } 336 // Return total compilation ticks 337 static jlong total_compilation_ticks() { 338 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0; 339 } 340 341 // Redefine Classes support 342 static void mark_on_stack(); 343 344 #if INCLUDE_JVMCI 345 // Print curent compilation time stats for a given compiler 346 static void print_times(AbstractCompiler* comp); 347 #endif 348 349 // Print a detailed accounting of compilation time 350 static void print_times(bool per_compiler = true, bool aggregate = true); 351 352 // Debugging output for failure 353 static void print_last_compile(); 354 355 static void print_compiler_threads_on(outputStream* st); 356 357 // compiler name for debugging 358 static const char* compiler_name(int comp_level); 359 360 static int get_total_compile_count() { return _total_compile_count; } 361 static int get_total_bailout_count() { return _total_bailout_count; } 362 static int get_total_invalidated_count() { return _total_invalidated_count; } 363 static int get_total_native_compile_count() { return _total_native_compile_count; } 364 static int get_total_osr_compile_count() { return _total_osr_compile_count; } 365 static int get_total_standard_compile_count() { return _total_standard_compile_count; } 366 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; } 367 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; } 368 static int get_sum_nmethod_size() { return _sum_nmethod_size;} 369 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; } 370 static long get_peak_compilation_time() { return _peak_compilation_time; } 371 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); } 372 373 // Log that compilation profiling is skipped because metaspace is full. 374 static void log_metaspace_failure(); 375 }; 376 377 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP