compileBroker.hpp revision 8266:4cf3113c8f42
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 32class nmethod; 33class nmethodLocker; 34 35// CompileTask 36// 37// An entry in the compile queue. It represents a pending or current 38// compilation. 39class 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 111private: 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 116public: 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// 151class 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-1); 176 _current_method[cmname_buffer_length-1] = '\0'; 177 if (UsePerfData) _perf_current_method->set_value(method); 178 } 179 180 char* current_method() { return _current_method; } 181 182 void set_compile_type(int compile_type) { 183 _compile_type = compile_type; 184 if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type); 185 } 186 187 int compile_type() { return _compile_type; } 188 189 PerfCounter* time_counter() { return _perf_time; } 190 PerfCounter* compile_counter() { return _perf_compiles; } 191}; 192 193// CompileQueue 194// 195// A list of CompileTasks. 196class CompileQueue : public CHeapObj<mtCompiler> { 197 private: 198 const char* _name; 199 200 CompileTask* _first; 201 CompileTask* _last; 202 203 CompileTask* _first_stale; 204 205 int _size; 206 207 void purge_stale_tasks(); 208 public: 209 CompileQueue(const char* name) { 210 _name = name; 211 _first = NULL; 212 _last = NULL; 213 _size = 0; 214 _first_stale = NULL; 215 } 216 217 const char* name() const { return _name; } 218 219 void add(CompileTask* task); 220 void remove(CompileTask* task); 221 void remove_and_mark_stale(CompileTask* task); 222 CompileTask* first() { return _first; } 223 CompileTask* last() { return _last; } 224 225 CompileTask* get(); 226 227 bool is_empty() const { return _first == NULL; } 228 int size() const { return _size; } 229 230 231 // Redefine Classes support 232 void mark_on_stack(); 233 void free_all(); 234 void print_tty(); 235 void print(outputStream* st = tty); 236 237 ~CompileQueue() { 238 assert (is_empty(), " Compile Queue must be empty"); 239 } 240}; 241 242// CompileTaskWrapper 243// 244// Assign this task to the current thread. Deallocate the task 245// when the compilation is complete. 246class CompileTaskWrapper : StackObj { 247public: 248 CompileTaskWrapper(CompileTask* task); 249 ~CompileTaskWrapper(); 250}; 251 252 253// Compilation 254// 255// The broker for all compilation requests. 256class CompileBroker: AllStatic { 257 friend class Threads; 258 friend class CompileTaskWrapper; 259 260 public: 261 enum { 262 name_buffer_length = 100 263 }; 264 265 // Compile type Information for print_last_compile() and CompilerCounters 266 enum { no_compile, normal_compile, osr_compile, native_compile }; 267 static int assign_compile_id (methodHandle method, int osr_bci); 268 269 270 private: 271 static bool _initialized; 272 static volatile bool _should_block; 273 274 // This flag can be used to stop compilation or turn it back on 275 static volatile jint _should_compile_new_jobs; 276 277 // The installed compiler(s) 278 static AbstractCompiler* _compilers[2]; 279 280 // These counters are used for assigning id's to each compilation 281 static volatile jint _compilation_id; 282 static volatile jint _osr_compilation_id; 283 284 static int _last_compile_type; 285 static int _last_compile_level; 286 static char _last_method_compiled[name_buffer_length]; 287 288 static CompileQueue* _c2_compile_queue; 289 static CompileQueue* _c1_compile_queue; 290 291 // performance counters 292 static PerfCounter* _perf_total_compilation; 293 static PerfCounter* _perf_native_compilation; 294 static PerfCounter* _perf_osr_compilation; 295 static PerfCounter* _perf_standard_compilation; 296 297 static PerfCounter* _perf_total_bailout_count; 298 static PerfCounter* _perf_total_invalidated_count; 299 static PerfCounter* _perf_total_compile_count; 300 static PerfCounter* _perf_total_native_compile_count; 301 static PerfCounter* _perf_total_osr_compile_count; 302 static PerfCounter* _perf_total_standard_compile_count; 303 304 static PerfCounter* _perf_sum_osr_bytes_compiled; 305 static PerfCounter* _perf_sum_standard_bytes_compiled; 306 static PerfCounter* _perf_sum_nmethod_size; 307 static PerfCounter* _perf_sum_nmethod_code_size; 308 309 static PerfStringVariable* _perf_last_method; 310 static PerfStringVariable* _perf_last_failed_method; 311 static PerfStringVariable* _perf_last_invalidated_method; 312 static PerfVariable* _perf_last_compile_type; 313 static PerfVariable* _perf_last_compile_size; 314 static PerfVariable* _perf_last_failed_type; 315 static PerfVariable* _perf_last_invalidated_type; 316 317 // Timers and counters for generating statistics 318 static elapsedTimer _t_total_compilation; 319 static elapsedTimer _t_osr_compilation; 320 static elapsedTimer _t_standard_compilation; 321 static elapsedTimer _t_invalidated_compilation; 322 static elapsedTimer _t_bailedout_compilation; 323 324 static int _total_compile_count; 325 static int _total_bailout_count; 326 static int _total_invalidated_count; 327 static int _total_native_compile_count; 328 static int _total_osr_compile_count; 329 static int _total_standard_compile_count; 330 static int _sum_osr_bytes_compiled; 331 static int _sum_standard_bytes_compiled; 332 static int _sum_nmethod_size; 333 static int _sum_nmethod_code_size; 334 static long _peak_compilation_time; 335 336 static volatile jint _print_compilation_warning; 337 338 static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS); 339 static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count); 340 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level); 341 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level); 342 static bool is_compile_blocking(); 343 static void preload_classes (methodHandle method, TRAPS); 344 345 static CompileTask* create_compile_task(CompileQueue* queue, 346 int compile_id, 347 methodHandle method, 348 int osr_bci, 349 int comp_level, 350 methodHandle hot_method, 351 int hot_count, 352 const char* comment, 353 bool blocking); 354 static void wait_for_completion(CompileTask* task); 355 356 static void invoke_compiler_on_method(CompileTask* task); 357 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level); 358 static void push_jni_handle_block(); 359 static void pop_jni_handle_block(); 360 static bool check_break_at(methodHandle method, int compile_id, bool is_osr); 361 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task); 362 363 static void compile_method_base(methodHandle method, 364 int osr_bci, 365 int comp_level, 366 methodHandle hot_method, 367 int hot_count, 368 const char* comment, 369 Thread* thread); 370 371 static CompileQueue* compile_queue(int comp_level); 372 static bool init_compiler_runtime(); 373 static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread); 374 375 public: 376 enum { 377 // The entry bci used for non-OSR compilations. 378 standard_entry_bci = InvocationEntryBci 379 }; 380 381 static AbstractCompiler* compiler(int comp_level) { 382 if (is_c2_compile(comp_level)) return _compilers[1]; // C2 383 if (is_c1_compile(comp_level)) return _compilers[0]; // C1 384 return NULL; 385 } 386 387 static bool compilation_is_in_queue(methodHandle method); 388 static void print_compile_queues(outputStream* st); 389 static int queue_size(int comp_level) { 390 CompileQueue *q = compile_queue(comp_level); 391 return q != NULL ? q->size() : 0; 392 } 393 static void compilation_init(); 394 static void init_compiler_thread_log(); 395 static nmethod* compile_method(methodHandle method, 396 int osr_bci, 397 int comp_level, 398 methodHandle hot_method, 399 int hot_count, 400 const char* comment, Thread* thread); 401 402 static void compiler_thread_loop(); 403 static uint get_compilation_id() { return _compilation_id; } 404 405 // Set _should_block. 406 // Call this from the VM, with Threads_lock held and a safepoint requested. 407 static void set_should_block(); 408 409 // Call this from the compiler at convenient points, to poll for _should_block. 410 static void maybe_block(); 411 412 enum { 413 // Flags for toggling compiler activity 414 stop_compilation = 0, 415 run_compilation = 1, 416 shutdown_compilaton = 2 417 }; 418 419 static jint get_compilation_activity_mode() { return _should_compile_new_jobs; } 420 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); } 421 static bool set_should_compile_new_jobs(jint new_state) { 422 // Return success if the current caller set it 423 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state); 424 return (old == (1-new_state)); 425 } 426 427 static void disable_compilation_forever() { 428 UseCompiler = false; 429 AlwaysCompileLoopMethods = false; 430 Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs); 431 } 432 433 static bool is_compilation_disabled_forever() { 434 return _should_compile_new_jobs == shutdown_compilaton; 435 } 436 static void handle_full_code_cache(int code_blob_type); 437 // Ensures that warning is only printed once. 438 static bool should_print_compiler_warning() { 439 jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0); 440 return old == 0; 441 } 442 // Return total compilation ticks 443 static jlong total_compilation_ticks() { 444 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0; 445 } 446 447 // Redefine Classes support 448 static void mark_on_stack(); 449 450 // Print a detailed accounting of compilation time 451 static void print_times(); 452 453 // Debugging output for failure 454 static void print_last_compile(); 455 456 static void print_compiler_threads_on(outputStream* st); 457 458 // compiler name for debugging 459 static const char* compiler_name(int comp_level); 460 461 static int get_total_compile_count() { return _total_compile_count; } 462 static int get_total_bailout_count() { return _total_bailout_count; } 463 static int get_total_invalidated_count() { return _total_invalidated_count; } 464 static int get_total_native_compile_count() { return _total_native_compile_count; } 465 static int get_total_osr_compile_count() { return _total_osr_compile_count; } 466 static int get_total_standard_compile_count() { return _total_standard_compile_count; } 467 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; } 468 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; } 469 static int get_sum_nmethod_size() { return _sum_nmethod_size;} 470 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; } 471 static long get_peak_compilation_time() { return _peak_compilation_time; } 472 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); } 473 474 // Log that compilation profiling is skipped because metaspace is full. 475 static void log_metaspace_failure(); 476}; 477 478#endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP 479