1 /* 2 * Copyright (c) 1999, 2014, 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 "runtime/perfData.hpp" 31 32 class nmethod; 33 class nmethodLocker; 34 35 // CompileTask 36 // 37 // An entry in the compile queue. It represents a pending or current 38 // compilation. 39 class CompileTask : public CHeapObj<mtCompiler> { 40 friend class VMStructs; 41 42 private: 43 static CompileTask* _task_free_list; 44 #ifdef ASSERT 45 static int _num_allocated_tasks; 46 #endif 47 48 Monitor* _lock; 49 uint _compile_id; 50 Method* _method; 51 jobject _method_holder; 52 int _osr_bci; 53 bool _is_complete; 54 bool _is_success; 55 bool _is_blocking; 56 int _comp_level; 57 int _num_inlined_bytecodes; 58 nmethodLocker* _code_handle; // holder of eventual result 59 CompileTask* _next, *_prev; 60 bool _is_free; 61 // Fields used for logging why the compilation was initiated: 62 jlong _time_queued; // in units of os::elapsed_counter() 63 Method* _hot_method; // which method actually triggered this task 64 jobject _hot_method_holder; 65 int _hot_count; // information about its invocation counter 66 const char* _comment; // more info about the task 67 const char* _failure_reason; 68 69 public: 70 CompileTask() { 71 _lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock"); 72 } 73 74 void initialize(int compile_id, methodHandle method, int osr_bci, int comp_level, 75 methodHandle hot_method, int hot_count, const char* comment, 76 bool is_blocking); 77 78 static CompileTask* allocate(); 79 static void free(CompileTask* task); 80 81 int compile_id() const { return _compile_id; } 82 Method* method() const { return _method; } 83 Method* hot_method() const { return _hot_method; } 84 int osr_bci() const { return _osr_bci; } 85 bool is_complete() const { return _is_complete; } 86 bool is_blocking() const { return _is_blocking; } 87 bool is_success() const { return _is_success; } 88 89 nmethodLocker* code_handle() const { return _code_handle; } 90 void set_code_handle(nmethodLocker* l) { _code_handle = l; } 91 nmethod* code() const; // _code_handle->code() 92 void set_code(nmethod* nm); // _code_handle->set_code(nm) 93 94 Monitor* lock() const { return _lock; } 95 96 void mark_complete() { _is_complete = true; } 97 void mark_success() { _is_success = true; } 98 99 int comp_level() { return _comp_level;} 100 void set_comp_level(int comp_level) { _comp_level = comp_level;} 101 102 int num_inlined_bytecodes() const { return _num_inlined_bytecodes; } 103 void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; } 104 105 CompileTask* next() const { return _next; } 106 void set_next(CompileTask* next) { _next = next; } 107 CompileTask* prev() const { return _prev; } 108 void set_prev(CompileTask* prev) { _prev = prev; } 109 bool is_free() const { return _is_free; } 110 void set_is_free(bool val) { _is_free = val; } 111 112 // RedefineClasses support 113 void metadata_do(void f(Metadata*)); 114 115 private: 116 static void print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, 117 bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false, 118 const char* msg = NULL, bool short_form = false, bool cr = true); 119 120 public: 121 void print_compilation(outputStream* st = tty, const char* msg = NULL, bool short_form = false, bool cr = true); 122 static void print_compilation(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false, bool cr = true) { 123 print_compilation_impl(st, nm->method(), nm->compile_id(), nm->comp_level(), 124 nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false, 125 msg, short_form, cr); 126 } 127 128 static void print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL); 129 static void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) { 130 print_inlining(tty, method, inline_level, bci, msg); 131 } 132 133 // Redefine Classes support 134 void mark_on_stack(); 135 136 static void print_inline_indent(int inline_level, outputStream* st = tty); 137 138 void print_tty(); 139 void print_line_on_error(outputStream* st, char* buf, int buflen); 140 141 void log_task(xmlStream* log); 142 void log_task_queued(); 143 void log_task_start(CompileLog* log); 144 void log_task_done(CompileLog* log); 145 146 void set_failure_reason(const char* reason) { 147 _failure_reason = reason; 148 } 149 }; 150 151 // CompilerCounters 152 // 153 // Per Compiler Performance Counters. 154 // 155 class CompilerCounters : public CHeapObj<mtCompiler> { 156 157 public: 158 enum { 159 cmname_buffer_length = 160 160 }; 161 162 private: 163 164 char _current_method[cmname_buffer_length]; 165 PerfStringVariable* _perf_current_method; 166 167 int _compile_type; 168 PerfVariable* _perf_compile_type; 169 170 PerfCounter* _perf_time; 171 PerfCounter* _perf_compiles; 172 173 public: 174 CompilerCounters(const char* name, int instance, TRAPS); 175 176 // these methods should be called in a thread safe context 177 178 void set_current_method(const char* method) { 179 strncpy(_current_method, method, (size_t)cmname_buffer_length-1); 180 _current_method[cmname_buffer_length-1] = '\0'; 181 if (UsePerfData) _perf_current_method->set_value(method); 182 } 183 184 char* current_method() { return _current_method; } 185 186 void set_compile_type(int compile_type) { 187 _compile_type = compile_type; 188 if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type); 189 } 190 191 int compile_type() { return _compile_type; } 192 193 PerfCounter* time_counter() { return _perf_time; } 194 PerfCounter* compile_counter() { return _perf_compiles; } 195 }; 196 197 // CompileQueue 198 // 199 // A list of CompileTasks. 200 class CompileQueue : public CHeapObj<mtCompiler> { 201 private: 202 const char* _name; 203 204 CompileTask* _first; 205 CompileTask* _last; 206 207 CompileTask* _first_stale; 208 209 int _size; 210 211 void purge_stale_tasks(); 212 public: 213 CompileQueue(const char* name) { 214 _name = name; 215 _first = NULL; 216 _last = NULL; 217 _size = 0; 218 _first_stale = NULL; 219 } 220 221 const char* name() const { return _name; } 222 223 void add(CompileTask* task); 224 void remove(CompileTask* task); 225 void remove_and_mark_stale(CompileTask* task); 226 CompileTask* first() { return _first; } 227 CompileTask* last() { return _last; } 228 229 CompileTask* get(); 230 231 bool is_empty() const { return _first == NULL; } 232 int size() const { return _size; } 233 234 235 // Redefine Classes support 236 void mark_on_stack(); 237 void free_all(); 238 void print_tty(); 239 void print(outputStream* st = tty); 240 241 ~CompileQueue() { 242 assert (is_empty(), " Compile Queue must be empty"); 243 } 244 }; 245 246 // CompileTaskWrapper 247 // 248 // Assign this task to the current thread. Deallocate the task 249 // when the compilation is complete. 250 class CompileTaskWrapper : StackObj { 251 public: 252 CompileTaskWrapper(CompileTask* task); 253 ~CompileTaskWrapper(); 254 }; 255 256 257 // Compilation 258 // 259 // The broker for all compilation requests. 260 class CompileBroker: AllStatic { 261 friend class Threads; 262 friend class CompileTaskWrapper; 263 264 public: 265 enum { 266 name_buffer_length = 100 267 }; 268 269 // Compile type Information for print_last_compile() and CompilerCounters 270 enum { no_compile, normal_compile, osr_compile, native_compile }; 271 static int assign_compile_id (methodHandle method, int osr_bci); 272 273 274 private: 275 static bool _initialized; 276 static volatile bool _should_block; 277 278 // This flag can be used to stop compilation or turn it back on 279 static volatile jint _should_compile_new_jobs; 280 281 // The installed compiler(s) 282 static AbstractCompiler* _compilers[2]; 283 284 // These counters are used for assigning id's to each compilation 285 static volatile jint _compilation_id; 286 static volatile jint _osr_compilation_id; 287 288 static int _last_compile_type; 289 static int _last_compile_level; 290 static char _last_method_compiled[name_buffer_length]; 291 292 static CompileQueue* _c2_compile_queue; 293 static CompileQueue* _c1_compile_queue; 294 295 // performance counters 296 static PerfCounter* _perf_total_compilation; 297 static PerfCounter* _perf_native_compilation; 298 static PerfCounter* _perf_osr_compilation; 299 static PerfCounter* _perf_standard_compilation; 300 301 static PerfCounter* _perf_total_bailout_count; 302 static PerfCounter* _perf_total_invalidated_count; 303 static PerfCounter* _perf_total_compile_count; 304 static PerfCounter* _perf_total_native_compile_count; 305 static PerfCounter* _perf_total_osr_compile_count; 306 static PerfCounter* _perf_total_standard_compile_count; 307 308 static PerfCounter* _perf_sum_osr_bytes_compiled; 309 static PerfCounter* _perf_sum_standard_bytes_compiled; 310 static PerfCounter* _perf_sum_nmethod_size; 311 static PerfCounter* _perf_sum_nmethod_code_size; 312 313 static PerfStringVariable* _perf_last_method; 314 static PerfStringVariable* _perf_last_failed_method; 315 static PerfStringVariable* _perf_last_invalidated_method; 316 static PerfVariable* _perf_last_compile_type; 317 static PerfVariable* _perf_last_compile_size; 318 static PerfVariable* _perf_last_failed_type; 319 static PerfVariable* _perf_last_invalidated_type; 320 321 // Timers and counters for generating statistics 322 static elapsedTimer _t_total_compilation; 323 static elapsedTimer _t_osr_compilation; 324 static elapsedTimer _t_standard_compilation; 325 static elapsedTimer _t_invalidated_compilation; 326 static elapsedTimer _t_bailedout_compilation; 327 328 static int _total_compile_count; 329 static int _total_bailout_count; 330 static int _total_invalidated_count; 331 static int _total_native_compile_count; 332 static int _total_osr_compile_count; 333 static int _total_standard_compile_count; 334 static int _sum_osr_bytes_compiled; 335 static int _sum_standard_bytes_compiled; 336 static int _sum_nmethod_size; 337 static int _sum_nmethod_code_size; 338 static long _peak_compilation_time; 339 340 static volatile jint _print_compilation_warning; 341 342 static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS); 343 static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count); 344 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level); 345 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level); 346 static bool is_compile_blocking(); 347 static void preload_classes (methodHandle method, TRAPS); 348 349 static CompileTask* create_compile_task(CompileQueue* queue, 350 int compile_id, 351 methodHandle method, 352 int osr_bci, 353 int comp_level, 354 methodHandle hot_method, 355 int hot_count, 356 const char* comment, 357 bool blocking); 358 static void wait_for_completion(CompileTask* task); 359 360 static void invoke_compiler_on_method(CompileTask* task); 361 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level); 362 static void push_jni_handle_block(); 363 static void pop_jni_handle_block(); 364 static bool check_break_at(methodHandle method, int compile_id, bool is_osr); 365 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task); 366 367 static void compile_method_base(methodHandle method, 368 int osr_bci, 369 int comp_level, 370 methodHandle hot_method, 371 int hot_count, 372 const char* comment, 373 Thread* thread); 374 375 static CompileQueue* compile_queue(int comp_level); 376 static bool init_compiler_runtime(); 377 static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread); 378 379 public: 380 enum { 381 // The entry bci used for non-OSR compilations. 382 standard_entry_bci = InvocationEntryBci 383 }; 384 385 static AbstractCompiler* compiler(int comp_level) { 386 if (is_c2_compile(comp_level)) return _compilers[1]; // C2 387 if (is_c1_compile(comp_level)) return _compilers[0]; // C1 388 return NULL; 389 } 390 391 static bool compilation_is_in_queue(methodHandle method); 392 static void print_compile_queues(outputStream* st); 393 static int queue_size(int comp_level) { 394 CompileQueue *q = compile_queue(comp_level); 395 return q != NULL ? q->size() : 0; 396 } 397 static void compilation_init(); 398 static void init_compiler_thread_log(); 399 static nmethod* compile_method(methodHandle method, 400 int osr_bci, 401 int comp_level, 402 methodHandle hot_method, 403 int hot_count, 404 const char* comment, Thread* thread); 405 406 static void compiler_thread_loop(); 407 static uint get_compilation_id() { return _compilation_id; } 408 409 // Set _should_block. 410 // Call this from the VM, with Threads_lock held and a safepoint requested. 411 static void set_should_block(); 412 413 // Call this from the compiler at convenient points, to poll for _should_block. 414 static void maybe_block(); 415 416 enum { 417 // Flags for toggling compiler activity 418 stop_compilation = 0, 419 run_compilation = 1, 420 shutdown_compilaton = 2 421 }; 422 423 static jint get_compilation_activity_mode() { return _should_compile_new_jobs; } 424 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); } 425 static bool set_should_compile_new_jobs(jint new_state) { 426 // Return success if the current caller set it 427 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state); 428 return (old == (1-new_state)); 429 } 430 431 static void disable_compilation_forever() { 432 UseCompiler = false; 433 AlwaysCompileLoopMethods = false; 434 Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs); 435 } 436 437 static bool is_compilation_disabled_forever() { 438 return _should_compile_new_jobs == shutdown_compilaton; 439 } 440 static void handle_full_code_cache(int code_blob_type); 441 // Ensures that warning is only printed once. 442 static bool should_print_compiler_warning() { 443 jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0); 444 return old == 0; 445 } 446 // Return total compilation ticks 447 static jlong total_compilation_ticks() { 448 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0; 449 } 450 451 // Redefine Classes support 452 static void mark_on_stack(); 453 454 // Print a detailed accounting of compilation time 455 static void print_times(); 456 457 // Debugging output for failure 458 static void print_last_compile(); 459 460 static void print_compiler_threads_on(outputStream* st); 461 462 // compiler name for debugging 463 static const char* compiler_name(int comp_level); 464 465 static int get_total_compile_count() { return _total_compile_count; } 466 static int get_total_bailout_count() { return _total_bailout_count; } 467 static int get_total_invalidated_count() { return _total_invalidated_count; } 468 static int get_total_native_compile_count() { return _total_native_compile_count; } 469 static int get_total_osr_compile_count() { return _total_osr_compile_count; } 470 static int get_total_standard_compile_count() { return _total_standard_compile_count; } 471 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; } 472 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; } 473 static int get_sum_nmethod_size() { return _sum_nmethod_size;} 474 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; } 475 static long get_peak_compilation_time() { return _peak_compilation_time; } 476 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); } 477 478 // Log that compilation profiling is skipped because metaspace is full. 479 static void log_metaspace_failure(); 480 }; 481 482 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP