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 #include "precompiled.hpp" 26 #include "ci/ciConstant.hpp" 27 #include "ci/ciEnv.hpp" 28 #include "ci/ciField.hpp" 29 #include "ci/ciInstance.hpp" 30 #include "ci/ciInstanceKlass.hpp" 31 #include "ci/ciMethod.hpp" 32 #include "ci/ciNullObject.hpp" 33 #include "ci/ciReplay.hpp" 34 #include "ci/ciUtilities.hpp" 35 #include "classfile/systemDictionary.hpp" 36 #include "classfile/vmSymbols.hpp" 37 #include "code/codeCache.hpp" 38 #include "code/scopeDesc.hpp" 39 #include "compiler/compileBroker.hpp" 40 #include "compiler/compileLog.hpp" 41 #include "compiler/disassembler.hpp" 42 #include "gc/shared/collectedHeap.inline.hpp" 43 #include "interpreter/linkResolver.hpp" 44 #include "memory/allocation.inline.hpp" 45 #include "memory/oopFactory.hpp" 46 #include "memory/universe.inline.hpp" 47 #include "oops/methodData.hpp" 48 #include "oops/objArrayKlass.hpp" 49 #include "oops/objArrayOop.inline.hpp" 50 #include "oops/oop.inline.hpp" 51 #include "prims/jvmtiExport.hpp" 52 #include "runtime/init.hpp" 53 #include "runtime/reflection.hpp" 54 #include "runtime/sharedRuntime.hpp" 55 #include "runtime/thread.inline.hpp" 56 #include "trace/tracing.hpp" 57 #include "utilities/dtrace.hpp" 58 #include "utilities/macros.hpp" 59 #ifdef COMPILER1 60 #include "c1/c1_Runtime1.hpp" 61 #endif 62 #ifdef COMPILER2 63 #include "opto/runtime.hpp" 64 #endif 65 66 // ciEnv 67 // 68 // This class is the top level broker for requests from the compiler 69 // to the VM. 70 71 ciObject* ciEnv::_null_object_instance; 72 73 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; 74 WK_KLASSES_DO(WK_KLASS_DEFN) 75 #undef WK_KLASS_DEFN 76 77 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; 78 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; 79 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; 80 81 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; 82 jobject ciEnv::_ArrayStoreException_handle = NULL; 83 jobject ciEnv::_ClassCastException_handle = NULL; 84 85 #ifndef PRODUCT 86 static bool firstEnv = true; 87 #endif /* PRODUCT */ 88 89 // ------------------------------------------------------------------ 90 // ciEnv::ciEnv 91 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) 92 : _ciEnv_arena(mtCompiler) { 93 VM_ENTRY_MARK; 94 95 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 96 thread->set_env(this); 97 assert(ciEnv::current() == this, "sanity"); 98 99 _oop_recorder = NULL; 100 _debug_info = NULL; 101 _dependencies = NULL; 102 _failure_reason = NULL; 103 _compilable = MethodCompilable; 104 _break_at_compile = false; 105 _compiler_data = NULL; 106 #ifndef PRODUCT 107 assert(!firstEnv, "not initialized properly"); 108 #endif /* !PRODUCT */ 109 110 _system_dictionary_modification_counter = system_dictionary_modification_counter; 111 _num_inlined_bytecodes = 0; 112 assert(task == NULL || thread->task() == task, "sanity"); 113 _task = task; 114 _log = NULL; 115 116 // Temporary buffer for creating symbols and such. 117 _name_buffer = NULL; 118 _name_buffer_len = 0; 119 120 _arena = &_ciEnv_arena; 121 _factory = new (_arena) ciObjectFactory(_arena, 128); 122 123 // Preload commonly referenced system ciObjects. 124 125 // During VM initialization, these instances have not yet been created. 126 // Assertions ensure that these instances are not accessed before 127 // their initialization. 128 129 assert(Universe::is_fully_initialized(), "should be complete"); 130 131 oop o = Universe::null_ptr_exception_instance(); 132 assert(o != NULL, "should have been initialized"); 133 _NullPointerException_instance = get_object(o)->as_instance(); 134 o = Universe::arithmetic_exception_instance(); 135 assert(o != NULL, "should have been initialized"); 136 _ArithmeticException_instance = get_object(o)->as_instance(); 137 138 _ArrayIndexOutOfBoundsException_instance = NULL; 139 _ArrayStoreException_instance = NULL; 140 _ClassCastException_instance = NULL; 141 _the_null_string = NULL; 142 _the_min_jint_string = NULL; 143 144 _jvmti_can_hotswap_or_post_breakpoint = false; 145 _jvmti_can_access_local_variables = false; 146 _jvmti_can_post_on_exceptions = false; 147 _jvmti_can_pop_frame = false; 148 } 149 150 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) { 151 ASSERT_IN_VM; 152 153 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 154 CompilerThread* current_thread = CompilerThread::current(); 155 assert(current_thread->env() == NULL, "must be"); 156 current_thread->set_env(this); 157 assert(ciEnv::current() == this, "sanity"); 158 159 _oop_recorder = NULL; 160 _debug_info = NULL; 161 _dependencies = NULL; 162 _failure_reason = NULL; 163 _compilable = MethodCompilable_never; 164 _break_at_compile = false; 165 _compiler_data = NULL; 166 #ifndef PRODUCT 167 assert(firstEnv, "must be first"); 168 firstEnv = false; 169 #endif /* !PRODUCT */ 170 171 _system_dictionary_modification_counter = 0; 172 _num_inlined_bytecodes = 0; 173 _task = NULL; 174 _log = NULL; 175 176 // Temporary buffer for creating symbols and such. 177 _name_buffer = NULL; 178 _name_buffer_len = 0; 179 180 _arena = arena; 181 _factory = new (_arena) ciObjectFactory(_arena, 128); 182 183 // Preload commonly referenced system ciObjects. 184 185 // During VM initialization, these instances have not yet been created. 186 // Assertions ensure that these instances are not accessed before 187 // their initialization. 188 189 assert(Universe::is_fully_initialized(), "must be"); 190 191 _NullPointerException_instance = NULL; 192 _ArithmeticException_instance = NULL; 193 _ArrayIndexOutOfBoundsException_instance = NULL; 194 _ArrayStoreException_instance = NULL; 195 _ClassCastException_instance = NULL; 196 _the_null_string = NULL; 197 _the_min_jint_string = NULL; 198 199 _jvmti_can_hotswap_or_post_breakpoint = false; 200 _jvmti_can_access_local_variables = false; 201 _jvmti_can_post_on_exceptions = false; 202 _jvmti_can_pop_frame = false; 203 } 204 205 ciEnv::~ciEnv() { 206 CompilerThread* current_thread = CompilerThread::current(); 207 _factory->remove_symbols(); 208 // Need safepoint to clear the env on the thread. RedefineClasses might 209 // be reading it. 210 GUARDED_VM_ENTRY(current_thread->set_env(NULL);) 211 } 212 213 // ------------------------------------------------------------------ 214 // Cache Jvmti state 215 void ciEnv::cache_jvmti_state() { 216 VM_ENTRY_MARK; 217 // Get Jvmti capabilities under lock to get consistant values. 218 MutexLocker mu(JvmtiThreadState_lock); 219 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); 220 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); 221 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); 222 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame(); 223 } 224 225 bool ciEnv::should_retain_local_variables() const { 226 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame; 227 } 228 229 bool ciEnv::jvmti_state_changed() const { 230 if (!_jvmti_can_access_local_variables && 231 JvmtiExport::can_access_local_variables()) { 232 return true; 233 } 234 if (!_jvmti_can_hotswap_or_post_breakpoint && 235 JvmtiExport::can_hotswap_or_post_breakpoint()) { 236 return true; 237 } 238 if (!_jvmti_can_post_on_exceptions && 239 JvmtiExport::can_post_on_exceptions()) { 240 return true; 241 } 242 if (!_jvmti_can_pop_frame && 243 JvmtiExport::can_pop_frame()) { 244 return true; 245 } 246 return false; 247 } 248 249 // ------------------------------------------------------------------ 250 // Cache DTrace flags 251 void ciEnv::cache_dtrace_flags() { 252 // Need lock? 253 _dtrace_extended_probes = ExtendedDTraceProbes; 254 if (_dtrace_extended_probes) { 255 _dtrace_monitor_probes = true; 256 _dtrace_method_probes = true; 257 _dtrace_alloc_probes = true; 258 } else { 259 _dtrace_monitor_probes = DTraceMonitorProbes; 260 _dtrace_method_probes = DTraceMethodProbes; 261 _dtrace_alloc_probes = DTraceAllocProbes; 262 } 263 } 264 265 // ------------------------------------------------------------------ 266 // helper for lazy exception creation 267 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { 268 VM_ENTRY_MARK; 269 if (handle == NULL) { 270 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. 271 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); 272 jobject objh = NULL; 273 if (!HAS_PENDING_EXCEPTION && k != NULL) { 274 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); 275 if (!HAS_PENDING_EXCEPTION) 276 objh = JNIHandles::make_global(obj); 277 } 278 if (HAS_PENDING_EXCEPTION) { 279 CLEAR_PENDING_EXCEPTION; 280 } else { 281 handle = objh; 282 } 283 } 284 oop obj = JNIHandles::resolve(handle); 285 return obj == NULL? NULL: get_object(obj)->as_instance(); 286 } 287 288 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { 289 if (_ArrayIndexOutOfBoundsException_instance == NULL) { 290 _ArrayIndexOutOfBoundsException_instance 291 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, 292 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 293 } 294 return _ArrayIndexOutOfBoundsException_instance; 295 } 296 ciInstance* ciEnv::ArrayStoreException_instance() { 297 if (_ArrayStoreException_instance == NULL) { 298 _ArrayStoreException_instance 299 = get_or_create_exception(_ArrayStoreException_handle, 300 vmSymbols::java_lang_ArrayStoreException()); 301 } 302 return _ArrayStoreException_instance; 303 } 304 ciInstance* ciEnv::ClassCastException_instance() { 305 if (_ClassCastException_instance == NULL) { 306 _ClassCastException_instance 307 = get_or_create_exception(_ClassCastException_handle, 308 vmSymbols::java_lang_ClassCastException()); 309 } 310 return _ClassCastException_instance; 311 } 312 313 ciInstance* ciEnv::the_null_string() { 314 if (_the_null_string == NULL) { 315 VM_ENTRY_MARK; 316 _the_null_string = get_object(Universe::the_null_string())->as_instance(); 317 } 318 return _the_null_string; 319 } 320 321 ciInstance* ciEnv::the_min_jint_string() { 322 if (_the_min_jint_string == NULL) { 323 VM_ENTRY_MARK; 324 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); 325 } 326 return _the_min_jint_string; 327 } 328 329 // ------------------------------------------------------------------ 330 // ciEnv::get_method_from_handle 331 ciMethod* ciEnv::get_method_from_handle(Method* method) { 332 VM_ENTRY_MARK; 333 return get_metadata(method)->as_method(); 334 } 335 336 // ------------------------------------------------------------------ 337 // ciEnv::array_element_offset_in_bytes 338 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { 339 VM_ENTRY_MARK; 340 objArrayOop a = (objArrayOop)a_h->get_oop(); 341 assert(a->is_objArray(), ""); 342 int length = a->length(); 343 oop o = o_h->get_oop(); 344 for (int i = 0; i < length; i++) { 345 if (a->obj_at(i) == o) return i; 346 } 347 return -1; 348 } 349 350 351 // ------------------------------------------------------------------ 352 // ciEnv::check_klass_accessiblity 353 // 354 // Note: the logic of this method should mirror the logic of 355 // ConstantPool::verify_constant_pool_resolve. 356 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, 357 Klass* resolved_klass) { 358 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { 359 return true; 360 } 361 if (accessing_klass->is_obj_array_klass()) { 362 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); 363 } 364 if (!accessing_klass->is_instance_klass()) { 365 return true; 366 } 367 368 if (resolved_klass->is_objArray_klass()) { 369 // Find the element klass, if this is an array. 370 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); 371 } 372 if (resolved_klass->is_instance_klass()) { 373 return Reflection::verify_class_access(accessing_klass->get_Klass(), 374 resolved_klass, 375 true); 376 } 377 return true; 378 } 379 380 // ------------------------------------------------------------------ 381 // ciEnv::get_klass_by_name_impl 382 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, 383 const constantPoolHandle& cpool, 384 ciSymbol* name, 385 bool require_local) { 386 ASSERT_IN_VM; 387 EXCEPTION_CONTEXT; 388 389 // Now we need to check the SystemDictionary 390 Symbol* sym = name->get_symbol(); 391 if (sym->byte_at(0) == 'L' && 392 sym->byte_at(sym->utf8_length()-1) == ';') { 393 // This is a name from a signature. Strip off the trimmings. 394 // Call recursive to keep scope of strippedsym. 395 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, 396 sym->utf8_length()-2, 397 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); 398 ciSymbol* strippedname = get_symbol(strippedsym); 399 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); 400 } 401 402 // Check for prior unloaded klass. The SystemDictionary's answers 403 // can vary over time but the compiler needs consistency. 404 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); 405 if (unloaded_klass != NULL) { 406 if (require_local) return NULL; 407 return unloaded_klass; 408 } 409 410 Handle loader(THREAD, (oop)NULL); 411 Handle domain(THREAD, (oop)NULL); 412 if (accessing_klass != NULL) { 413 loader = Handle(THREAD, accessing_klass->loader()); 414 domain = Handle(THREAD, accessing_klass->protection_domain()); 415 } 416 417 // setup up the proper type to return on OOM 418 ciKlass* fail_type; 419 if (sym->byte_at(0) == '[') { 420 fail_type = _unloaded_ciobjarrayklass; 421 } else { 422 fail_type = _unloaded_ciinstance_klass; 423 } 424 KlassHandle found_klass; 425 { 426 ttyUnlocker ttyul; // release tty lock to avoid ordering problems 427 MutexLocker ml(Compile_lock); 428 Klass* kls; 429 if (!require_local) { 430 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, 431 KILL_COMPILE_ON_FATAL_(fail_type)); 432 } else { 433 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, 434 KILL_COMPILE_ON_FATAL_(fail_type)); 435 } 436 found_klass = KlassHandle(THREAD, kls); 437 } 438 439 // If we fail to find an array klass, look again for its element type. 440 // The element type may be available either locally or via constraints. 441 // In either case, if we can find the element type in the system dictionary, 442 // we must build an array type around it. The CI requires array klasses 443 // to be loaded if their element klasses are loaded, except when memory 444 // is exhausted. 445 if (sym->byte_at(0) == '[' && 446 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { 447 // We have an unloaded array. 448 // Build it on the fly if the element class exists. 449 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, 450 sym->utf8_length()-1, 451 KILL_COMPILE_ON_FATAL_(fail_type)); 452 453 // Get element ciKlass recursively. 454 ciKlass* elem_klass = 455 get_klass_by_name_impl(accessing_klass, 456 cpool, 457 get_symbol(elem_sym), 458 require_local); 459 if (elem_klass != NULL && elem_klass->is_loaded()) { 460 // Now make an array for it 461 return ciObjArrayKlass::make_impl(elem_klass); 462 } 463 } 464 465 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { 466 // Look inside the constant pool for pre-resolved class entries. 467 for (int i = cpool->length() - 1; i >= 1; i--) { 468 if (cpool->tag_at(i).is_klass()) { 469 Klass* kls = cpool->resolved_klass_at(i); 470 if (kls->name() == sym) { 471 found_klass = KlassHandle(THREAD, kls); 472 break; 473 } 474 } 475 } 476 } 477 478 if (found_klass() != NULL) { 479 // Found it. Build a CI handle. 480 return get_klass(found_klass()); 481 } 482 483 if (require_local) return NULL; 484 485 // Not yet loaded into the VM, or not governed by loader constraints. 486 // Make a CI representative for it. 487 return get_unloaded_klass(accessing_klass, name); 488 } 489 490 // ------------------------------------------------------------------ 491 // ciEnv::get_klass_by_name 492 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, 493 ciSymbol* klass_name, 494 bool require_local) { 495 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, 496 constantPoolHandle(), 497 klass_name, 498 require_local);) 499 } 500 501 // ------------------------------------------------------------------ 502 // ciEnv::get_klass_by_index_impl 503 // 504 // Implementation of get_klass_by_index. 505 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool, 506 int index, 507 bool& is_accessible, 508 ciInstanceKlass* accessor) { 509 EXCEPTION_CONTEXT; 510 KlassHandle klass; // = NULL; 511 Symbol* klass_name = NULL; 512 513 if (cpool->tag_at(index).is_symbol()) { 514 klass_name = cpool->symbol_at(index); 515 } else { 516 // Check if it's resolved if it's not a symbol constant pool entry. 517 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); 518 // Try to look it up by name. 519 if (klass.is_null()) { 520 klass_name = cpool->klass_name_at(index); 521 } 522 } 523 524 if (klass.is_null()) { 525 // Not found in constant pool. Use the name to do the lookup. 526 ciKlass* k = get_klass_by_name_impl(accessor, 527 cpool, 528 get_symbol(klass_name), 529 false); 530 // Calculate accessibility the hard way. 531 if (!k->is_loaded()) { 532 is_accessible = false; 533 } else if (k->loader() != accessor->loader() && 534 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { 535 // Loaded only remotely. Not linked yet. 536 is_accessible = false; 537 } else { 538 // Linked locally, and we must also check public/private, etc. 539 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); 540 } 541 return k; 542 } 543 544 // Check for prior unloaded klass. The SystemDictionary's answers 545 // can vary over time but the compiler needs consistency. 546 ciSymbol* name = get_symbol(klass()->name()); 547 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); 548 if (unloaded_klass != NULL) { 549 is_accessible = false; 550 return unloaded_klass; 551 } 552 553 // It is known to be accessible, since it was found in the constant pool. 554 is_accessible = true; 555 return get_klass(klass()); 556 } 557 558 // ------------------------------------------------------------------ 559 // ciEnv::get_klass_by_index 560 // 561 // Get a klass from the constant pool. 562 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool, 563 int index, 564 bool& is_accessible, 565 ciInstanceKlass* accessor) { 566 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) 567 } 568 569 // ------------------------------------------------------------------ 570 // ciEnv::get_constant_by_index_impl 571 // 572 // Implementation of get_constant_by_index(). 573 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool, 574 int pool_index, int cache_index, 575 ciInstanceKlass* accessor) { 576 bool ignore_will_link; 577 EXCEPTION_CONTEXT; 578 int index = pool_index; 579 if (cache_index >= 0) { 580 assert(index < 0, "only one kind of index at a time"); 581 oop obj = cpool->resolved_references()->obj_at(cache_index); 582 if (obj != NULL) { 583 ciObject* ciobj = get_object(obj); 584 if (ciobj->is_array()) { 585 return ciConstant(T_ARRAY, ciobj); 586 } else { 587 assert(ciobj->is_instance(), "should be an instance"); 588 return ciConstant(T_OBJECT, ciobj); 589 } 590 } 591 index = cpool->object_to_cp_index(cache_index); 592 } 593 constantTag tag = cpool->tag_at(index); 594 if (tag.is_int()) { 595 return ciConstant(T_INT, (jint)cpool->int_at(index)); 596 } else if (tag.is_long()) { 597 return ciConstant((jlong)cpool->long_at(index)); 598 } else if (tag.is_float()) { 599 return ciConstant((jfloat)cpool->float_at(index)); 600 } else if (tag.is_double()) { 601 return ciConstant((jdouble)cpool->double_at(index)); 602 } else if (tag.is_string()) { 603 oop string = NULL; 604 assert(cache_index >= 0, "should have a cache index"); 605 if (cpool->is_pseudo_string_at(index)) { 606 string = cpool->pseudo_string_at(index, cache_index); 607 } else { 608 string = cpool->string_at(index, cache_index, THREAD); 609 if (HAS_PENDING_EXCEPTION) { 610 CLEAR_PENDING_EXCEPTION; 611 record_out_of_memory_failure(); 612 return ciConstant(); 613 } 614 } 615 ciObject* constant = get_object(string); 616 if (constant->is_array()) { 617 return ciConstant(T_ARRAY, constant); 618 } else { 619 assert (constant->is_instance(), "must be an instance, or not? "); 620 return ciConstant(T_OBJECT, constant); 621 } 622 } else if (tag.is_klass() || tag.is_unresolved_klass()) { 623 // 4881222: allow ldc to take a class type 624 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); 625 if (HAS_PENDING_EXCEPTION) { 626 CLEAR_PENDING_EXCEPTION; 627 record_out_of_memory_failure(); 628 return ciConstant(); 629 } 630 assert (klass->is_instance_klass() || klass->is_array_klass(), 631 "must be an instance or array klass "); 632 return ciConstant(T_OBJECT, klass->java_mirror()); 633 } else if (tag.is_method_type()) { 634 // must execute Java code to link this CP entry into cache[i].f1 635 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); 636 ciObject* ciobj = get_unloaded_method_type_constant(signature); 637 return ciConstant(T_OBJECT, ciobj); 638 } else if (tag.is_method_handle()) { 639 // must execute Java code to link this CP entry into cache[i].f1 640 int ref_kind = cpool->method_handle_ref_kind_at(index); 641 int callee_index = cpool->method_handle_klass_index_at(index); 642 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); 643 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); 644 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); 645 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); 646 return ciConstant(T_OBJECT, ciobj); 647 } else { 648 ShouldNotReachHere(); 649 return ciConstant(); 650 } 651 } 652 653 // ------------------------------------------------------------------ 654 // ciEnv::get_constant_by_index 655 // 656 // Pull a constant out of the constant pool. How appropriate. 657 // 658 // Implementation note: this query is currently in no way cached. 659 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool, 660 int pool_index, int cache_index, 661 ciInstanceKlass* accessor) { 662 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) 663 } 664 665 // ------------------------------------------------------------------ 666 // ciEnv::get_field_by_index_impl 667 // 668 // Implementation of get_field_by_index. 669 // 670 // Implementation note: the results of field lookups are cached 671 // in the accessor klass. 672 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, 673 int index) { 674 ciConstantPoolCache* cache = accessor->field_cache(); 675 if (cache == NULL) { 676 ciField* field = new (arena()) ciField(accessor, index); 677 return field; 678 } else { 679 ciField* field = (ciField*)cache->get(index); 680 if (field == NULL) { 681 field = new (arena()) ciField(accessor, index); 682 cache->insert(index, field); 683 } 684 return field; 685 } 686 } 687 688 // ------------------------------------------------------------------ 689 // ciEnv::get_field_by_index 690 // 691 // Get a field by index from a klass's constant pool. 692 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, 693 int index) { 694 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) 695 } 696 697 // ------------------------------------------------------------------ 698 // ciEnv::lookup_method 699 // 700 // Perform an appropriate method lookup based on accessor, holder, 701 // name, signature, and bytecode. 702 Method* ciEnv::lookup_method(InstanceKlass* accessor, 703 InstanceKlass* holder, 704 Symbol* name, 705 Symbol* sig, 706 Bytecodes::Code bc) { 707 EXCEPTION_CONTEXT; 708 KlassHandle h_accessor(THREAD, accessor); 709 KlassHandle h_holder(THREAD, holder); 710 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); 711 methodHandle dest_method; 712 LinkInfo link_info(h_holder, name, sig, h_accessor, /*check_access*/true); 713 switch (bc) { 714 case Bytecodes::_invokestatic: 715 dest_method = 716 LinkResolver::resolve_static_call_or_null(link_info); 717 break; 718 case Bytecodes::_invokespecial: 719 dest_method = 720 LinkResolver::resolve_special_call_or_null(link_info); 721 break; 722 case Bytecodes::_invokeinterface: 723 dest_method = 724 LinkResolver::linktime_resolve_interface_method_or_null(link_info); 725 break; 726 case Bytecodes::_invokevirtual: 727 case Bytecodes::_invokedirect: 728 dest_method = 729 LinkResolver::linktime_resolve_virtual_method_or_null(link_info); 730 break; 731 default: ShouldNotReachHere(); 732 } 733 734 return dest_method(); 735 } 736 737 738 // ------------------------------------------------------------------ 739 // ciEnv::get_method_by_index_impl 740 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool, 741 int index, Bytecodes::Code bc, 742 ciInstanceKlass* accessor) { 743 if (bc == Bytecodes::_invokedynamic) { 744 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); 745 bool is_resolved = !cpce->is_f1_null(); 746 // FIXME: code generation could allow for null (unlinked) call site 747 // The call site could be made patchable as follows: 748 // Load the appendix argument from the constant pool. 749 // Test the appendix argument and jump to a known deopt routine if it is null. 750 // Jump through a patchable call site, which is initially a deopt routine. 751 // Patch the call site to the nmethod entry point of the static compiled lambda form. 752 // As with other two-component call sites, both values must be independently verified. 753 754 if (is_resolved) { 755 // Get the invoker Method* from the constant pool. 756 // (The appendix argument, if any, will be noted in the method's signature.) 757 Method* adapter = cpce->f1_as_method(); 758 return get_method(adapter); 759 } 760 761 // Fake a method that is equivalent to a declared method. 762 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); 763 ciSymbol* name = ciSymbol::invokeBasic_name(); 764 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); 765 return get_unloaded_method(holder, name, signature, accessor); 766 } else { 767 const int holder_index = cpool->klass_ref_index_at(index); 768 bool holder_is_accessible; 769 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); 770 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); 771 772 // Get the method's name and signature. 773 Symbol* name_sym = cpool->name_ref_at(index); 774 Symbol* sig_sym = cpool->signature_ref_at(index); 775 776 if (cpool->has_preresolution() 777 || ((holder == ciEnv::MethodHandle_klass() || 778 holder == ciEnv::VarHandle_klass() || 779 holder == ciEnv::FieldHandle_klass() || 780 holder == ciEnv::ArrayHandle_klass()) && 781 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { 782 // Short-circuit lookups for JSR 292-related call sites. 783 // That is, do not rely only on name-based lookups, because they may fail 784 // if the names are not resolvable in the boot class loader (7056328). 785 switch (bc) { 786 case Bytecodes::_invokevirtual: 787 case Bytecodes::_invokedirect: 788 case Bytecodes::_invokeinterface: 789 case Bytecodes::_invokespecial: 790 case Bytecodes::_invokestatic: 791 { 792 Method* m = ConstantPool::method_at_if_loaded(cpool, index); 793 if (m != NULL) { 794 return get_method(m); 795 } 796 } 797 break; 798 } 799 } 800 801 if (holder_is_accessible) { // Our declared holder is loaded. 802 InstanceKlass* lookup = declared_holder->get_instanceKlass(); 803 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); 804 if (m != NULL && 805 (bc == Bytecodes::_invokestatic 806 ? m->method_holder()->is_not_initialized() 807 : !m->method_holder()->is_loaded())) { 808 m = NULL; 809 } 810 #ifdef ASSERT 811 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { 812 m = NULL; 813 } 814 #endif 815 if (m != NULL) { 816 // We found the method. 817 return get_method(m); 818 } 819 } 820 821 // Either the declared holder was not loaded, or the method could 822 // not be found. Create a dummy ciMethod to represent the failed 823 // lookup. 824 ciSymbol* name = get_symbol(name_sym); 825 ciSymbol* signature = get_symbol(sig_sym); 826 return get_unloaded_method(declared_holder, name, signature, accessor); 827 } 828 } 829 830 831 // ------------------------------------------------------------------ 832 // ciEnv::get_instance_klass_for_declared_method_holder 833 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { 834 // For the case of <array>.clone(), the method holder can be a ciArrayKlass 835 // instead of a ciInstanceKlass. For that case simply pretend that the 836 // declared holder is Object.clone since that's where the call will bottom out. 837 // A more correct fix would trickle out through many interfaces in CI, 838 // requiring ciInstanceKlass* to become ciKlass* and many more places would 839 // require checks to make sure the expected type was found. Given that this 840 // only occurs for clone() the more extensive fix seems like overkill so 841 // instead we simply smear the array type into Object. 842 guarantee(method_holder != NULL, "no method holder"); 843 if (method_holder->is_instance_klass()) { 844 return method_holder->as_instance_klass(); 845 } else if (method_holder->is_array_klass()) { 846 return current()->Object_klass(); 847 } else { 848 ShouldNotReachHere(); 849 } 850 return NULL; 851 } 852 853 854 // ------------------------------------------------------------------ 855 // ciEnv::get_method_by_index 856 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool, 857 int index, Bytecodes::Code bc, 858 ciInstanceKlass* accessor) { 859 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) 860 } 861 862 863 // ------------------------------------------------------------------ 864 // ciEnv::name_buffer 865 char *ciEnv::name_buffer(int req_len) { 866 if (_name_buffer_len < req_len) { 867 if (_name_buffer == NULL) { 868 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); 869 _name_buffer_len = req_len; 870 } else { 871 _name_buffer = 872 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); 873 _name_buffer_len = req_len; 874 } 875 } 876 return _name_buffer; 877 } 878 879 // ------------------------------------------------------------------ 880 // ciEnv::is_in_vm 881 bool ciEnv::is_in_vm() { 882 return JavaThread::current()->thread_state() == _thread_in_vm; 883 } 884 885 bool ciEnv::system_dictionary_modification_counter_changed() { 886 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); 887 } 888 889 // ------------------------------------------------------------------ 890 // ciEnv::validate_compile_task_dependencies 891 // 892 // Check for changes during compilation (e.g. class loads, evolution, 893 // breakpoints, call site invalidation). 894 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { 895 if (failing()) return; // no need for further checks 896 897 // First, check non-klass dependencies as we might return early and 898 // not check klass dependencies if the system dictionary 899 // modification counter hasn't changed (see below). 900 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 901 if (deps.is_klass_type()) continue; // skip klass dependencies 902 Klass* witness = deps.check_dependency(); 903 if (witness != NULL) { 904 record_failure("invalid non-klass dependency"); 905 return; 906 } 907 } 908 909 // Klass dependencies must be checked when the system dictionary 910 // changes. If logging is enabled all violated dependences will be 911 // recorded in the log. In debug mode check dependencies even if 912 // the system dictionary hasn't changed to verify that no invalid 913 // dependencies were inserted. Any violated dependences in this 914 // case are dumped to the tty. 915 bool counter_changed = system_dictionary_modification_counter_changed(); 916 917 bool verify_deps = trueInDebug; 918 if (!counter_changed && !verify_deps) return; 919 920 int klass_violations = 0; 921 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 922 if (!deps.is_klass_type()) continue; // skip non-klass dependencies 923 Klass* witness = deps.check_dependency(); 924 if (witness != NULL) { 925 klass_violations++; 926 if (!counter_changed) { 927 // Dependence failed but counter didn't change. Log a message 928 // describing what failed and allow the assert at the end to 929 // trigger. 930 deps.print_dependency(witness); 931 } else if (xtty == NULL) { 932 // If we're not logging then a single violation is sufficient, 933 // otherwise we want to log all the dependences which were 934 // violated. 935 break; 936 } 937 } 938 } 939 940 if (klass_violations != 0) { 941 #ifdef ASSERT 942 if (!counter_changed && !PrintCompilation) { 943 // Print out the compile task that failed 944 _task->print_tty(); 945 } 946 #endif 947 assert(counter_changed, "failed dependencies, but counter didn't change"); 948 record_failure("concurrent class loading"); 949 } 950 } 951 952 // ------------------------------------------------------------------ 953 // ciEnv::register_method 954 void ciEnv::register_method(ciMethod* target, 955 int entry_bci, 956 CodeOffsets* offsets, 957 int orig_pc_offset, 958 CodeBuffer* code_buffer, 959 int frame_words, 960 OopMapSet* oop_map_set, 961 ExceptionHandlerTable* handler_table, 962 ImplicitExceptionTable* inc_table, 963 AbstractCompiler* compiler, 964 bool has_unsafe_access, 965 bool has_wide_vectors, 966 RTMState rtm_state) { 967 VM_ENTRY_MARK; 968 nmethod* nm = NULL; 969 { 970 // To prevent compile queue updates. 971 MutexLocker locker(MethodCompileQueue_lock, THREAD); 972 973 // Prevent SystemDictionary::add_to_hierarchy from running 974 // and invalidating our dependencies until we install this method. 975 // No safepoints are allowed. Otherwise, class redefinition can occur in between. 976 MutexLocker ml(Compile_lock); 977 NoSafepointVerifier nsv; 978 979 // Change in Jvmti state may invalidate compilation. 980 if (!failing() && jvmti_state_changed()) { 981 record_failure("Jvmti state change invalidated dependencies"); 982 } 983 984 // Change in DTrace flags may invalidate compilation. 985 if (!failing() && 986 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || 987 (!dtrace_method_probes() && DTraceMethodProbes) || 988 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { 989 record_failure("DTrace flags change invalidated dependencies"); 990 } 991 992 if (!failing()) { 993 if (log() != NULL) { 994 // Log the dependencies which this compilation declares. 995 dependencies()->log_all_dependencies(); 996 } 997 998 // Encode the dependencies now, so we can check them right away. 999 dependencies()->encode_content_bytes(); 1000 1001 // Check for {class loads, evolution, breakpoints, ...} during compilation 1002 validate_compile_task_dependencies(target); 1003 } 1004 1005 methodHandle method(THREAD, target->get_Method()); 1006 1007 #if INCLUDE_RTM_OPT 1008 if (!failing() && (rtm_state != NoRTM) && 1009 (method()->method_data() != NULL) && 1010 (method()->method_data()->rtm_state() != rtm_state)) { 1011 // Preemptive decompile if rtm state was changed. 1012 record_failure("RTM state change invalidated rtm code"); 1013 } 1014 #endif 1015 1016 if (failing()) { 1017 // While not a true deoptimization, it is a preemptive decompile. 1018 MethodData* mdo = method()->method_data(); 1019 if (mdo != NULL) { 1020 mdo->inc_decompile_count(); 1021 } 1022 1023 // All buffers in the CodeBuffer are allocated in the CodeCache. 1024 // If the code buffer is created on each compile attempt 1025 // as in C2, then it must be freed. 1026 code_buffer->free_blob(); 1027 return; 1028 } 1029 1030 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); 1031 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); 1032 1033 nm = nmethod::new_nmethod(method, 1034 compile_id(), 1035 entry_bci, 1036 offsets, 1037 orig_pc_offset, 1038 debug_info(), dependencies(), code_buffer, 1039 frame_words, oop_map_set, 1040 handler_table, inc_table, 1041 compiler, task()->comp_level()); 1042 1043 // Free codeBlobs 1044 code_buffer->free_blob(); 1045 1046 if (nm != NULL) { 1047 nm->set_has_unsafe_access(has_unsafe_access); 1048 nm->set_has_wide_vectors(has_wide_vectors); 1049 #if INCLUDE_RTM_OPT 1050 nm->set_rtm_state(rtm_state); 1051 #endif 1052 1053 // Record successful registration. 1054 // (Put nm into the task handle *before* publishing to the Java heap.) 1055 if (task() != NULL) { 1056 task()->set_code(nm); 1057 } 1058 1059 if (entry_bci == InvocationEntryBci) { 1060 if (TieredCompilation) { 1061 // If there is an old version we're done with it 1062 nmethod* old = method->code(); 1063 if (TraceMethodReplacement && old != NULL) { 1064 ResourceMark rm; 1065 char *method_name = method->name_and_sig_as_C_string(); 1066 tty->print_cr("Replacing method %s", method_name); 1067 } 1068 if (old != NULL) { 1069 old->make_not_entrant(); 1070 } 1071 } 1072 if (TraceNMethodInstalls) { 1073 ResourceMark rm; 1074 char *method_name = method->name_and_sig_as_C_string(); 1075 ttyLocker ttyl; 1076 tty->print_cr("Installing method (%d) %s ", 1077 task()->comp_level(), 1078 method_name); 1079 } 1080 // Allow the code to be executed 1081 method->set_code(method, nm); 1082 } else { 1083 if (TraceNMethodInstalls) { 1084 ResourceMark rm; 1085 char *method_name = method->name_and_sig_as_C_string(); 1086 ttyLocker ttyl; 1087 tty->print_cr("Installing osr method (%d) %s @ %d", 1088 task()->comp_level(), 1089 method_name, 1090 entry_bci); 1091 } 1092 method->method_holder()->add_osr_nmethod(nm); 1093 } 1094 } 1095 } // safepoints are allowed again 1096 1097 if (nm != NULL) { 1098 // JVMTI -- compiled method notification (must be done outside lock) 1099 nm->post_compiled_method_load_event(); 1100 } else { 1101 // The CodeCache is full. 1102 record_failure("code cache is full"); 1103 } 1104 } 1105 1106 1107 // ------------------------------------------------------------------ 1108 // ciEnv::find_system_klass 1109 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { 1110 VM_ENTRY_MARK; 1111 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); 1112 } 1113 1114 // ------------------------------------------------------------------ 1115 // ciEnv::comp_level 1116 int ciEnv::comp_level() { 1117 if (task() == NULL) return CompLevel_highest_tier; 1118 return task()->comp_level(); 1119 } 1120 1121 // ------------------------------------------------------------------ 1122 // ciEnv::compile_id 1123 uint ciEnv::compile_id() { 1124 if (task() == NULL) return 0; 1125 return task()->compile_id(); 1126 } 1127 1128 // ------------------------------------------------------------------ 1129 // ciEnv::notice_inlined_method() 1130 void ciEnv::notice_inlined_method(ciMethod* method) { 1131 _num_inlined_bytecodes += method->code_size_for_inlining(); 1132 } 1133 1134 // ------------------------------------------------------------------ 1135 // ciEnv::num_inlined_bytecodes() 1136 int ciEnv::num_inlined_bytecodes() const { 1137 return _num_inlined_bytecodes; 1138 } 1139 1140 // ------------------------------------------------------------------ 1141 // ciEnv::record_failure() 1142 void ciEnv::record_failure(const char* reason) { 1143 if (_failure_reason == NULL) { 1144 // Record the first failure reason. 1145 _failure_reason = reason; 1146 } 1147 } 1148 1149 void ciEnv::report_failure(const char* reason) { 1150 // Create and fire JFR event 1151 EventCompilerFailure event; 1152 if (event.should_commit()) { 1153 event.set_compileID(compile_id()); 1154 event.set_failure(reason); 1155 event.commit(); 1156 } 1157 } 1158 1159 // ------------------------------------------------------------------ 1160 // ciEnv::record_method_not_compilable() 1161 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { 1162 int new_compilable = 1163 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; 1164 1165 // Only note transitions to a worse state 1166 if (new_compilable > _compilable) { 1167 if (log() != NULL) { 1168 if (all_tiers) { 1169 log()->elem("method_not_compilable"); 1170 } else { 1171 log()->elem("method_not_compilable_at_tier level='%d'", 1172 current()->task()->comp_level()); 1173 } 1174 } 1175 _compilable = new_compilable; 1176 1177 // Reset failure reason; this one is more important. 1178 _failure_reason = NULL; 1179 record_failure(reason); 1180 } 1181 } 1182 1183 // ------------------------------------------------------------------ 1184 // ciEnv::record_out_of_memory_failure() 1185 void ciEnv::record_out_of_memory_failure() { 1186 // If memory is low, we stop compiling methods. 1187 record_method_not_compilable("out of memory"); 1188 } 1189 1190 ciInstance* ciEnv::unloaded_ciinstance() { 1191 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) 1192 } 1193 1194 // ------------------------------------------------------------------ 1195 // ciEnv::dump_replay_data* 1196 1197 // Don't change thread state and acquire any locks. 1198 // Safe to call from VM error reporter. 1199 1200 void ciEnv::dump_compile_data(outputStream* out) { 1201 CompileTask* task = this->task(); 1202 Method* method = task->method(); 1203 int entry_bci = task->osr_bci(); 1204 int comp_level = task->comp_level(); 1205 out->print("compile %s %s %s %d %d", 1206 method->klass_name()->as_quoted_ascii(), 1207 method->name()->as_quoted_ascii(), 1208 method->signature()->as_quoted_ascii(), 1209 entry_bci, comp_level); 1210 if (compiler_data() != NULL) { 1211 if (is_c2_compile(comp_level)) { // C2 or Shark 1212 #ifdef COMPILER2 1213 // Dump C2 inlining data. 1214 ((Compile*)compiler_data())->dump_inline_data(out); 1215 #endif 1216 } else if (is_c1_compile(comp_level)) { // C1 1217 #ifdef COMPILER1 1218 // Dump C1 inlining data. 1219 ((Compilation*)compiler_data())->dump_inline_data(out); 1220 #endif 1221 } 1222 } 1223 out->cr(); 1224 } 1225 1226 void ciEnv::dump_replay_data_unsafe(outputStream* out) { 1227 ResourceMark rm; 1228 #if INCLUDE_JVMTI 1229 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); 1230 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); 1231 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); 1232 #endif // INCLUDE_JVMTI 1233 1234 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); 1235 out->print_cr("# %d ciObject found", objects->length()); 1236 for (int i = 0; i < objects->length(); i++) { 1237 objects->at(i)->dump_replay_data(out); 1238 } 1239 dump_compile_data(out); 1240 out->flush(); 1241 } 1242 1243 void ciEnv::dump_replay_data(outputStream* out) { 1244 GUARDED_VM_ENTRY( 1245 MutexLocker ml(Compile_lock); 1246 dump_replay_data_unsafe(out); 1247 ) 1248 } 1249 1250 void ciEnv::dump_replay_data(int compile_id) { 1251 static char buffer[O_BUFLEN]; 1252 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id); 1253 if (ret > 0) { 1254 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1255 if (fd != -1) { 1256 FILE* replay_data_file = os::open(fd, "w"); 1257 if (replay_data_file != NULL) { 1258 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1259 dump_replay_data(&replay_data_stream); 1260 tty->print_cr("# Compiler replay data is saved as: %s", buffer); 1261 } else { 1262 tty->print_cr("# Can't open file to dump replay data."); 1263 } 1264 } 1265 } 1266 } 1267 1268 void ciEnv::dump_inline_data(int compile_id) { 1269 static char buffer[O_BUFLEN]; 1270 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id); 1271 if (ret > 0) { 1272 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1273 if (fd != -1) { 1274 FILE* inline_data_file = os::open(fd, "w"); 1275 if (inline_data_file != NULL) { 1276 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); 1277 GUARDED_VM_ENTRY( 1278 MutexLocker ml(Compile_lock); 1279 dump_compile_data(&replay_data_stream); 1280 ) 1281 replay_data_stream.flush(); 1282 tty->print("# Compiler inline data is saved as: "); 1283 tty->print_cr("%s", buffer); 1284 } else { 1285 tty->print_cr("# Can't open file to dump inline data."); 1286 } 1287 } 1288 } 1289 }