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