1 /* 2 * Copyright (c) 1999, 2013, 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 Monitor* _lock; 44 uint _compile_id; 45 Method* _method; 46 jobject _method_holder; 47 int _osr_bci; 48 bool _is_complete; 49 bool _is_success; 50 bool _is_blocking; 51 int _comp_level; 52 int _num_inlined_bytecodes; 53 nmethodLocker* _code_handle; // holder of eventual result 54 CompileTask* _next, *_prev; 55 56 // Fields used for logging why the compilation was initiated: 57 jlong _time_queued; // in units of os::elapsed_counter() 58 Method* _hot_method; // which method actually triggered this task 59 jobject _hot_method_holder; 60 int _hot_count; // information about its invocation counter 61 const char* _comment; // more info about the task 62 63 public: 64 CompileTask() { 65 _lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock"); 66 } 67 68 void initialize(int compile_id, methodHandle method, int osr_bci, int comp_level, 69 methodHandle hot_method, int hot_count, const char* comment, 70 bool is_blocking); 71 72 void free(); 73 74 int compile_id() const { return _compile_id; } 75 Method* method() const { return _method; } 76 int osr_bci() const { return _osr_bci; } 77 bool is_complete() const { return _is_complete; } 78 bool is_blocking() const { return _is_blocking; } 79 bool is_success() const { return _is_success; } 80 81 nmethodLocker* code_handle() const { return _code_handle; } 82 void set_code_handle(nmethodLocker* l) { _code_handle = l; } 83 nmethod* code() const; // _code_handle->code() 84 void set_code(nmethod* nm); // _code_handle->set_code(nm) 85 86 Monitor* lock() const { return _lock; } 87 88 void mark_complete() { _is_complete = true; } 89 void mark_success() { _is_success = true; } 90 91 int comp_level() { return _comp_level;} 92 void set_comp_level(int comp_level) { _comp_level = comp_level;} 93 94 int num_inlined_bytecodes() const { return _num_inlined_bytecodes; } 95 void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; } 96 97 CompileTask* next() const { return _next; } 98 void set_next(CompileTask* next) { _next = next; } 99 CompileTask* prev() const { return _prev; } 100 void set_prev(CompileTask* prev) { _prev = prev; } 101 102 private: 103 static void print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, 104 bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false, 105 const char* msg = NULL, bool short_form = false); 106 107 public: 108 void print_compilation(outputStream* st = tty, const char* msg = NULL, bool short_form = false); 109 static void print_compilation(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false) { 110 print_compilation_impl(st, nm->method(), nm->compile_id(), nm->comp_level(), 111 nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false, 112 msg, short_form); 113 } 114 115 static void print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL); 116 static void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) { 117 print_inlining(tty, method, inline_level, bci, msg); 118 } 119 120 // Redefine Classes support 121 void mark_on_stack(); 122 123 static void print_inline_indent(int inline_level, outputStream* st = tty); 124 125 void print(); 126 void print_line(); 127 void print_line_on_error(outputStream* st, char* buf, int buflen); 128 129 void log_task(xmlStream* log); 130 void log_task_queued(); 131 void log_task_start(CompileLog* log); 132 void log_task_done(CompileLog* log); 133 }; 134 135 // CompilerCounters 136 // 137 // Per Compiler Performance Counters. 138 // 139 class CompilerCounters : public CHeapObj<mtCompiler> { 140 141 public: 142 enum { 143 cmname_buffer_length = 160 144 }; 145 146 private: 147 148 char _current_method[cmname_buffer_length]; 149 PerfStringVariable* _perf_current_method; 150 151 int _compile_type; 152 PerfVariable* _perf_compile_type; 153 154 PerfCounter* _perf_time; 155 PerfCounter* _perf_compiles; 156 157 public: 158 CompilerCounters(const char* name, int instance, TRAPS); 159 160 // these methods should be called in a thread safe context 161 162 void set_current_method(const char* method) { 163 strncpy(_current_method, method, (size_t)cmname_buffer_length); 164 if (UsePerfData) _perf_current_method->set_value(method); 165 } 166 167 char* current_method() { return _current_method; } 168 169 void set_compile_type(int compile_type) { 170 _compile_type = compile_type; 171 if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type); 172 } 173 174 int compile_type() { return _compile_type; } 175 176 PerfCounter* time_counter() { return _perf_time; } 177 PerfCounter* compile_counter() { return _perf_compiles; } 178 }; 179 180 // CompileQueue 181 // 182 // A list of CompileTasks. 183 class CompileQueue : public CHeapObj<mtCompiler> { 184 private: 185 const char* _name; 186 Monitor* _lock; 187 188 CompileTask* _first; 189 CompileTask* _last; 190 191 int _size; 192 public: 193 CompileQueue(const char* name, Monitor* lock) { 194 _name = name; 195 _lock = lock; 196 _first = NULL; 197 _last = NULL; 198 _size = 0; 199 } 200 201 const char* name() const { return _name; } 202 Monitor* lock() const { return _lock; } 203 204 void add(CompileTask* task); 205 void remove(CompileTask* task); 206 CompileTask* first() { return _first; } 207 CompileTask* last() { return _last; } 208 209 CompileTask* get(); 210 211 bool is_empty() const { return _first == NULL; } 212 int size() const { return _size; } 213 214 // Redefine Classes support 215 void mark_on_stack(); 216 217 void print(); 218 }; 219 220 // CompileTaskWrapper 221 // 222 // Assign this task to the current thread. Deallocate the task 223 // when the compilation is complete. 224 class CompileTaskWrapper : StackObj { 225 public: 226 CompileTaskWrapper(CompileTask* task); 227 ~CompileTaskWrapper(); 228 }; 229 230 231 // Compilation 232 // 233 // The broker for all compilation requests. 234 class CompileBroker: AllStatic { 235 friend class Threads; 236 friend class CompileTaskWrapper; 237 238 public: 239 enum { 240 name_buffer_length = 100 241 }; 242 243 // Compile type Information for print_last_compile() and CompilerCounters 244 enum { no_compile, normal_compile, osr_compile, native_compile }; 245 246 private: 247 static bool _initialized; 248 static volatile bool _should_block; 249 250 // This flag can be used to stop compilation or turn it back on 251 static volatile jint _should_compile_new_jobs; 252 253 // The installed compiler(s) 254 static AbstractCompiler* _compilers[2]; 255 256 // These counters are used for assigning id's to each compilation 257 static uint _compilation_id; 258 static uint _osr_compilation_id; 259 static uint _native_compilation_id; 260 261 static int _last_compile_type; 262 static int _last_compile_level; 263 static char _last_method_compiled[name_buffer_length]; 264 265 static CompileQueue* _c2_method_queue; 266 static CompileQueue* _c1_method_queue; 267 static CompileTask* _task_free_list; 268 269 static GrowableArray<CompilerThread*>* _method_threads; 270 271 // performance counters 272 static PerfCounter* _perf_total_compilation; 273 static PerfCounter* _perf_native_compilation; 274 static PerfCounter* _perf_osr_compilation; 275 static PerfCounter* _perf_standard_compilation; 276 277 static PerfCounter* _perf_total_bailout_count; 278 static PerfCounter* _perf_total_invalidated_count; 279 static PerfCounter* _perf_total_compile_count; 280 static PerfCounter* _perf_total_native_compile_count; 281 static PerfCounter* _perf_total_osr_compile_count; 282 static PerfCounter* _perf_total_standard_compile_count; 283 284 static PerfCounter* _perf_sum_osr_bytes_compiled; 285 static PerfCounter* _perf_sum_standard_bytes_compiled; 286 static PerfCounter* _perf_sum_nmethod_size; 287 static PerfCounter* _perf_sum_nmethod_code_size; 288 289 static PerfStringVariable* _perf_last_method; 290 static PerfStringVariable* _perf_last_failed_method; 291 static PerfStringVariable* _perf_last_invalidated_method; 292 static PerfVariable* _perf_last_compile_type; 293 static PerfVariable* _perf_last_compile_size; 294 static PerfVariable* _perf_last_failed_type; 295 static PerfVariable* _perf_last_invalidated_type; 296 297 // Timers and counters for generating statistics 298 static elapsedTimer _t_total_compilation; 299 static elapsedTimer _t_osr_compilation; 300 static elapsedTimer _t_standard_compilation; 301 302 static int _total_compile_count; 303 static int _total_bailout_count; 304 static int _total_invalidated_count; 305 static int _total_native_compile_count; 306 static int _total_osr_compile_count; 307 static int _total_standard_compile_count; 308 static int _sum_osr_bytes_compiled; 309 static int _sum_standard_bytes_compiled; 310 static int _sum_nmethod_size; 311 static int _sum_nmethod_code_size; 312 static long _peak_compilation_time; 313 314 static CompilerThread* make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS); 315 static void init_compiler_threads(int c1_compiler_count, int c2_compiler_count); 316 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level); 317 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level); 318 static uint assign_compile_id (methodHandle method, int osr_bci); 319 static bool is_compile_blocking (methodHandle method, int osr_bci); 320 static void preload_classes (methodHandle method, TRAPS); 321 322 static CompileTask* create_compile_task(CompileQueue* queue, 323 int compile_id, 324 methodHandle method, 325 int osr_bci, 326 int comp_level, 327 methodHandle hot_method, 328 int hot_count, 329 const char* comment, 330 bool blocking); 331 static CompileTask* allocate_task(); 332 static void free_task(CompileTask* task); 333 static void wait_for_completion(CompileTask* task); 334 335 static void invoke_compiler_on_method(CompileTask* task); 336 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level); 337 static void push_jni_handle_block(); 338 static void pop_jni_handle_block(); 339 static bool check_break_at(methodHandle method, int compile_id, bool is_osr); 340 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task); 341 342 static void compile_method_base(methodHandle method, 343 int osr_bci, 344 int comp_level, 345 methodHandle hot_method, 346 int hot_count, 347 const char* comment, 348 Thread* thread); 349 static CompileQueue* compile_queue(int comp_level) { 350 if (is_c2_compile(comp_level)) return _c2_method_queue; 351 if (is_c1_compile(comp_level)) return _c1_method_queue; 352 return NULL; 353 } 354 public: 355 enum { 356 // The entry bci used for non-OSR compilations. 357 standard_entry_bci = InvocationEntryBci 358 }; 359 360 static AbstractCompiler* compiler(int comp_level) { 361 if (is_c2_compile(comp_level)) return _compilers[1]; // C2 362 if (is_c1_compile(comp_level)) return _compilers[0]; // C1 363 return NULL; 364 } 365 366 static bool compilation_is_in_queue(methodHandle method, int osr_bci); 367 static int queue_size(int comp_level) { 368 CompileQueue *q = compile_queue(comp_level); 369 return q != NULL ? q->size() : 0; 370 } 371 static void compilation_init(); 372 static void init_compiler_thread_log(); 373 static nmethod* compile_method(methodHandle method, 374 int osr_bci, 375 int comp_level, 376 methodHandle hot_method, 377 int hot_count, 378 const char* comment, Thread* thread); 379 380 static void compiler_thread_loop(); 381 382 static uint get_compilation_id() { return _compilation_id; } 383 static bool is_idle(); 384 385 // Set _should_block. 386 // Call this from the VM, with Threads_lock held and a safepoint requested. 387 static void set_should_block(); 388 389 // Call this from the compiler at convenient points, to poll for _should_block. 390 static void maybe_block(); 391 392 enum { 393 // Flags for toggling compiler activity 394 stop_compilation = 0, 395 run_compilation = 1 396 }; 397 398 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); } 399 static bool set_should_compile_new_jobs(jint new_state) { 400 // Return success if the current caller set it 401 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state); 402 return (old == (1-new_state)); 403 } 404 static void handle_full_code_cache(int code_blob_type); 405 406 // Return total compilation ticks 407 static jlong total_compilation_ticks() { 408 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0; 409 } 410 411 // Redefine Classes support 412 static void mark_on_stack(); 413 414 // Print a detailed accounting of compilation time 415 static void print_times(); 416 417 // Debugging output for failure 418 static void print_last_compile(); 419 420 static void print_compiler_threads_on(outputStream* st); 421 422 // compiler name for debugging 423 static const char* compiler_name(int comp_level); 424 425 static int get_total_compile_count() { return _total_compile_count; } 426 static int get_total_bailout_count() { return _total_bailout_count; } 427 static int get_total_invalidated_count() { return _total_invalidated_count; } 428 static int get_total_native_compile_count() { return _total_native_compile_count; } 429 static int get_total_osr_compile_count() { return _total_osr_compile_count; } 430 static int get_total_standard_compile_count() { return _total_standard_compile_count; } 431 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; } 432 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; } 433 static int get_sum_nmethod_size() { return _sum_nmethod_size;} 434 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; } 435 static long get_peak_compilation_time() { return _peak_compilation_time; } 436 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); } 437 }; 438 439 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP