1 /* 2 * Copyright (c) 1999, 2017, 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/resourceArea.hpp" 47 #include "memory/universe.inline.hpp" 48 #include "oops/methodData.hpp" 49 #include "oops/objArrayKlass.hpp" 50 #include "oops/objArrayOop.inline.hpp" 51 #include "oops/oop.inline.hpp" 52 #include "prims/jvmtiExport.hpp" 53 #include "runtime/init.hpp" 54 #include "runtime/reflection.hpp" 55 #include "runtime/sharedRuntime.hpp" 56 #include "runtime/thread.inline.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 #if INCLUDE_TRACE 66 #include "trace/tracing.hpp" 67 #endif 68 69 // ciEnv 70 // 71 // This class is the top level broker for requests from the compiler 72 // to the VM. 73 74 ciObject* ciEnv::_null_object_instance; 75 76 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; 77 WK_KLASSES_DO(WK_KLASS_DEFN) 78 #undef WK_KLASS_DEFN 79 80 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; 81 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; 82 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; 83 84 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; 85 jobject ciEnv::_ArrayStoreException_handle = NULL; 86 jobject ciEnv::_ClassCastException_handle = NULL; 87 88 #ifndef PRODUCT 89 static bool firstEnv = true; 90 #endif /* PRODUCT */ 91 92 // ------------------------------------------------------------------ 93 // ciEnv::ciEnv 94 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) 95 : _ciEnv_arena(mtCompiler) { 96 VM_ENTRY_MARK; 97 98 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 99 thread->set_env(this); 100 assert(ciEnv::current() == this, "sanity"); 101 102 _oop_recorder = NULL; 103 _debug_info = NULL; 104 _dependencies = NULL; 105 _failure_reason = NULL; 106 _inc_decompile_count_on_failure = true; 107 _compilable = MethodCompilable; 108 _break_at_compile = false; 109 _compiler_data = NULL; 110 #ifndef PRODUCT 111 assert(!firstEnv, "not initialized properly"); 112 #endif /* !PRODUCT */ 113 114 _system_dictionary_modification_counter = system_dictionary_modification_counter; 115 _num_inlined_bytecodes = 0; 116 assert(task == NULL || thread->task() == task, "sanity"); 117 _task = task; 118 _log = NULL; 119 120 // Temporary buffer for creating symbols and such. 121 _name_buffer = NULL; 122 _name_buffer_len = 0; 123 124 _arena = &_ciEnv_arena; 125 _factory = new (_arena) ciObjectFactory(_arena, 128); 126 127 // Preload commonly referenced system ciObjects. 128 129 // During VM initialization, these instances have not yet been created. 130 // Assertions ensure that these instances are not accessed before 131 // their initialization. 132 133 assert(Universe::is_fully_initialized(), "should be complete"); 134 135 oop o = Universe::null_ptr_exception_instance(); 136 assert(o != NULL, "should have been initialized"); 137 _NullPointerException_instance = get_object(o)->as_instance(); 138 o = Universe::arithmetic_exception_instance(); 139 assert(o != NULL, "should have been initialized"); 140 _ArithmeticException_instance = get_object(o)->as_instance(); 141 142 _ArrayIndexOutOfBoundsException_instance = NULL; 143 _ArrayStoreException_instance = NULL; 144 _ClassCastException_instance = NULL; 145 _the_null_string = NULL; 146 _the_min_jint_string = NULL; 147 148 _jvmti_can_hotswap_or_post_breakpoint = false; 149 _jvmti_can_access_local_variables = false; 150 _jvmti_can_post_on_exceptions = false; 151 _jvmti_can_pop_frame = false; 152 } 153 154 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) { 155 ASSERT_IN_VM; 156 157 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 158 CompilerThread* current_thread = CompilerThread::current(); 159 assert(current_thread->env() == NULL, "must be"); 160 current_thread->set_env(this); 161 assert(ciEnv::current() == this, "sanity"); 162 163 _oop_recorder = NULL; 164 _debug_info = NULL; 165 _dependencies = NULL; 166 _failure_reason = NULL; 167 _inc_decompile_count_on_failure = true; 168 _compilable = MethodCompilable_never; 169 _break_at_compile = false; 170 _compiler_data = NULL; 171 #ifndef PRODUCT 172 assert(firstEnv, "must be first"); 173 firstEnv = false; 174 #endif /* !PRODUCT */ 175 176 _system_dictionary_modification_counter = 0; 177 _num_inlined_bytecodes = 0; 178 _task = NULL; 179 _log = NULL; 180 181 // Temporary buffer for creating symbols and such. 182 _name_buffer = NULL; 183 _name_buffer_len = 0; 184 185 _arena = arena; 186 _factory = new (_arena) ciObjectFactory(_arena, 128); 187 188 // Preload commonly referenced system ciObjects. 189 190 // During VM initialization, these instances have not yet been created. 191 // Assertions ensure that these instances are not accessed before 192 // their initialization. 193 194 assert(Universe::is_fully_initialized(), "must be"); 195 196 _NullPointerException_instance = NULL; 197 _ArithmeticException_instance = NULL; 198 _ArrayIndexOutOfBoundsException_instance = NULL; 199 _ArrayStoreException_instance = NULL; 200 _ClassCastException_instance = NULL; 201 _the_null_string = NULL; 202 _the_min_jint_string = NULL; 203 204 _jvmti_can_hotswap_or_post_breakpoint = false; 205 _jvmti_can_access_local_variables = false; 206 _jvmti_can_post_on_exceptions = false; 207 _jvmti_can_pop_frame = false; 208 } 209 210 ciEnv::~ciEnv() { 211 GUARDED_VM_ENTRY( 212 CompilerThread* current_thread = CompilerThread::current(); 213 _factory->remove_symbols(); 214 // Need safepoint to clear the env on the thread. RedefineClasses might 215 // be reading it. 216 current_thread->set_env(NULL); 217 ) 218 } 219 220 // ------------------------------------------------------------------ 221 // Cache Jvmti state 222 void ciEnv::cache_jvmti_state() { 223 VM_ENTRY_MARK; 224 // Get Jvmti capabilities under lock to get consistant values. 225 MutexLocker mu(JvmtiThreadState_lock); 226 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); 227 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); 228 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); 229 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame(); 230 } 231 232 bool ciEnv::should_retain_local_variables() const { 233 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame; 234 } 235 236 bool ciEnv::jvmti_state_changed() const { 237 if (!_jvmti_can_access_local_variables && 238 JvmtiExport::can_access_local_variables()) { 239 return true; 240 } 241 if (!_jvmti_can_hotswap_or_post_breakpoint && 242 JvmtiExport::can_hotswap_or_post_breakpoint()) { 243 return true; 244 } 245 if (!_jvmti_can_post_on_exceptions && 246 JvmtiExport::can_post_on_exceptions()) { 247 return true; 248 } 249 if (!_jvmti_can_pop_frame && 250 JvmtiExport::can_pop_frame()) { 251 return true; 252 } 253 return false; 254 } 255 256 // ------------------------------------------------------------------ 257 // Cache DTrace flags 258 void ciEnv::cache_dtrace_flags() { 259 // Need lock? 260 _dtrace_extended_probes = ExtendedDTraceProbes; 261 if (_dtrace_extended_probes) { 262 _dtrace_monitor_probes = true; 263 _dtrace_method_probes = true; 264 _dtrace_alloc_probes = true; 265 } else { 266 _dtrace_monitor_probes = DTraceMonitorProbes; 267 _dtrace_method_probes = DTraceMethodProbes; 268 _dtrace_alloc_probes = DTraceAllocProbes; 269 } 270 } 271 272 // ------------------------------------------------------------------ 273 // helper for lazy exception creation 274 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { 275 VM_ENTRY_MARK; 276 if (handle == NULL) { 277 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. 278 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); 279 jobject objh = NULL; 280 if (!HAS_PENDING_EXCEPTION && k != NULL) { 281 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); 282 if (!HAS_PENDING_EXCEPTION) 283 objh = JNIHandles::make_global(Handle(THREAD, obj)); 284 } 285 if (HAS_PENDING_EXCEPTION) { 286 CLEAR_PENDING_EXCEPTION; 287 } else { 288 handle = objh; 289 } 290 } 291 oop obj = JNIHandles::resolve(handle); 292 return obj == NULL? NULL: get_object(obj)->as_instance(); 293 } 294 295 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { 296 if (_ArrayIndexOutOfBoundsException_instance == NULL) { 297 _ArrayIndexOutOfBoundsException_instance 298 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, 299 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 300 } 301 return _ArrayIndexOutOfBoundsException_instance; 302 } 303 ciInstance* ciEnv::ArrayStoreException_instance() { 304 if (_ArrayStoreException_instance == NULL) { 305 _ArrayStoreException_instance 306 = get_or_create_exception(_ArrayStoreException_handle, 307 vmSymbols::java_lang_ArrayStoreException()); 308 } 309 return _ArrayStoreException_instance; 310 } 311 ciInstance* ciEnv::ClassCastException_instance() { 312 if (_ClassCastException_instance == NULL) { 313 _ClassCastException_instance 314 = get_or_create_exception(_ClassCastException_handle, 315 vmSymbols::java_lang_ClassCastException()); 316 } 317 return _ClassCastException_instance; 318 } 319 320 ciInstance* ciEnv::the_null_string() { 321 if (_the_null_string == NULL) { 322 VM_ENTRY_MARK; 323 _the_null_string = get_object(Universe::the_null_string())->as_instance(); 324 } 325 return _the_null_string; 326 } 327 328 ciInstance* ciEnv::the_min_jint_string() { 329 if (_the_min_jint_string == NULL) { 330 VM_ENTRY_MARK; 331 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); 332 } 333 return _the_min_jint_string; 334 } 335 336 // ------------------------------------------------------------------ 337 // ciEnv::get_method_from_handle 338 ciMethod* ciEnv::get_method_from_handle(Method* method) { 339 VM_ENTRY_MARK; 340 return get_metadata(method)->as_method(); 341 } 342 343 // ------------------------------------------------------------------ 344 // ciEnv::array_element_offset_in_bytes 345 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { 346 VM_ENTRY_MARK; 347 objArrayOop a = (objArrayOop)a_h->get_oop(); 348 assert(a->is_objArray(), ""); 349 int length = a->length(); 350 oop o = o_h->get_oop(); 351 for (int i = 0; i < length; i++) { 352 if (a->obj_at(i) == o) return i; 353 } 354 return -1; 355 } 356 357 358 // ------------------------------------------------------------------ 359 // ciEnv::check_klass_accessiblity 360 // 361 // Note: the logic of this method should mirror the logic of 362 // ConstantPool::verify_constant_pool_resolve. 363 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, 364 Klass* resolved_klass) { 365 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { 366 return true; 367 } 368 if (accessing_klass->is_obj_array_klass()) { 369 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); 370 } 371 if (!accessing_klass->is_instance_klass()) { 372 return true; 373 } 374 375 if (resolved_klass->is_objArray_klass()) { 376 // Find the element klass, if this is an array. 377 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); 378 } 379 if (resolved_klass->is_instance_klass()) { 380 return (Reflection::verify_class_access(accessing_klass->get_Klass(), 381 InstanceKlass::cast(resolved_klass), 382 true) == Reflection::ACCESS_OK); 383 } 384 return true; 385 } 386 387 // ------------------------------------------------------------------ 388 // ciEnv::get_klass_by_name_impl 389 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, 390 const constantPoolHandle& cpool, 391 ciSymbol* name, 392 bool require_local) { 393 ASSERT_IN_VM; 394 EXCEPTION_CONTEXT; 395 396 // Now we need to check the SystemDictionary 397 Symbol* sym = name->get_symbol(); 398 if (sym->byte_at(0) == 'L' && 399 sym->byte_at(sym->utf8_length()-1) == ';') { 400 // This is a name from a signature. Strip off the trimmings. 401 // Call recursive to keep scope of strippedsym. 402 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, 403 sym->utf8_length()-2, 404 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); 405 ciSymbol* strippedname = get_symbol(strippedsym); 406 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); 407 } 408 409 // Check for prior unloaded klass. The SystemDictionary's answers 410 // can vary over time but the compiler needs consistency. 411 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); 412 if (unloaded_klass != NULL) { 413 if (require_local) return NULL; 414 return unloaded_klass; 415 } 416 417 Handle loader(THREAD, (oop)NULL); 418 Handle domain(THREAD, (oop)NULL); 419 if (accessing_klass != NULL) { 420 loader = Handle(THREAD, accessing_klass->loader()); 421 domain = Handle(THREAD, accessing_klass->protection_domain()); 422 } 423 424 // setup up the proper type to return on OOM 425 ciKlass* fail_type; 426 if (sym->byte_at(0) == '[') { 427 fail_type = _unloaded_ciobjarrayklass; 428 } else { 429 fail_type = _unloaded_ciinstance_klass; 430 } 431 Klass* found_klass; 432 { 433 ttyUnlocker ttyul; // release tty lock to avoid ordering problems 434 MutexLocker ml(Compile_lock); 435 Klass* kls; 436 if (!require_local) { 437 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, 438 KILL_COMPILE_ON_FATAL_(fail_type)); 439 } else { 440 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, 441 KILL_COMPILE_ON_FATAL_(fail_type)); 442 } 443 found_klass = kls; 444 } 445 446 // If we fail to find an array klass, look again for its element type. 447 // The element type may be available either locally or via constraints. 448 // In either case, if we can find the element type in the system dictionary, 449 // we must build an array type around it. The CI requires array klasses 450 // to be loaded if their element klasses are loaded, except when memory 451 // is exhausted. 452 if (sym->byte_at(0) == '[' && 453 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { 454 // We have an unloaded array. 455 // Build it on the fly if the element class exists. 456 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, 457 sym->utf8_length()-1, 458 KILL_COMPILE_ON_FATAL_(fail_type)); 459 460 // Get element ciKlass recursively. 461 ciKlass* elem_klass = 462 get_klass_by_name_impl(accessing_klass, 463 cpool, 464 get_symbol(elem_sym), 465 require_local); 466 if (elem_klass != NULL && elem_klass->is_loaded()) { 467 // Now make an array for it 468 return ciObjArrayKlass::make_impl(elem_klass); 469 } 470 } 471 472 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) { 473 // Look inside the constant pool for pre-resolved class entries. 474 for (int i = cpool->length() - 1; i >= 1; i--) { 475 if (cpool->tag_at(i).is_klass()) { 476 Klass* kls = cpool->resolved_klass_at(i); 477 if (kls->name() == sym) { 478 found_klass = kls; 479 break; 480 } 481 } 482 } 483 } 484 485 if (found_klass != NULL) { 486 // Found it. Build a CI handle. 487 return get_klass(found_klass); 488 } 489 490 if (require_local) return NULL; 491 492 // Not yet loaded into the VM, or not governed by loader constraints. 493 // Make a CI representative for it. 494 return get_unloaded_klass(accessing_klass, name); 495 } 496 497 // ------------------------------------------------------------------ 498 // ciEnv::get_klass_by_name 499 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, 500 ciSymbol* klass_name, 501 bool require_local) { 502 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, 503 constantPoolHandle(), 504 klass_name, 505 require_local);) 506 } 507 508 // ------------------------------------------------------------------ 509 // ciEnv::get_klass_by_index_impl 510 // 511 // Implementation of get_klass_by_index. 512 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool, 513 int index, 514 bool& is_accessible, 515 ciInstanceKlass* accessor) { 516 EXCEPTION_CONTEXT; 517 Klass* klass = NULL; 518 Symbol* klass_name = NULL; 519 520 if (cpool->tag_at(index).is_symbol()) { 521 klass_name = cpool->symbol_at(index); 522 } else { 523 // Check if it's resolved if it's not a symbol constant pool entry. 524 klass = ConstantPool::klass_at_if_loaded(cpool, index); 525 // Try to look it up by name. 526 if (klass == NULL) { 527 klass_name = cpool->klass_name_at(index); 528 } 529 } 530 531 if (klass == NULL) { 532 // Not found in constant pool. Use the name to do the lookup. 533 ciKlass* k = get_klass_by_name_impl(accessor, 534 cpool, 535 get_symbol(klass_name), 536 false); 537 // Calculate accessibility the hard way. 538 if (!k->is_loaded()) { 539 is_accessible = false; 540 } else if (k->loader() != accessor->loader() && 541 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { 542 // Loaded only remotely. Not linked yet. 543 is_accessible = false; 544 } else { 545 // Linked locally, and we must also check public/private, etc. 546 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); 547 } 548 return k; 549 } 550 551 // Check for prior unloaded klass. The SystemDictionary's answers 552 // can vary over time but the compiler needs consistency. 553 ciSymbol* name = get_symbol(klass->name()); 554 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); 555 if (unloaded_klass != NULL) { 556 is_accessible = false; 557 return unloaded_klass; 558 } 559 560 // It is known to be accessible, since it was found in the constant pool. 561 is_accessible = true; 562 return get_klass(klass); 563 } 564 565 // ------------------------------------------------------------------ 566 // ciEnv::get_klass_by_index 567 // 568 // Get a klass from the constant pool. 569 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool, 570 int index, 571 bool& is_accessible, 572 ciInstanceKlass* accessor) { 573 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) 574 } 575 576 // ------------------------------------------------------------------ 577 // ciEnv::get_constant_by_index_impl 578 // 579 // Implementation of get_constant_by_index(). 580 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool, 581 int pool_index, int cache_index, 582 ciInstanceKlass* accessor) { 583 bool ignore_will_link; 584 EXCEPTION_CONTEXT; 585 int index = pool_index; 586 if (cache_index >= 0) { 587 assert(index < 0, "only one kind of index at a time"); 588 oop obj = cpool->resolved_references()->obj_at(cache_index); 589 if (obj != NULL) { 590 ciObject* ciobj = get_object(obj); 591 if (ciobj->is_array()) { 592 return ciConstant(T_ARRAY, ciobj); 593 } else { 594 assert(ciobj->is_instance(), "should be an instance"); 595 return ciConstant(T_OBJECT, ciobj); 596 } 597 } 598 index = cpool->object_to_cp_index(cache_index); 599 } 600 constantTag tag = cpool->tag_at(index); 601 if (tag.is_int()) { 602 return ciConstant(T_INT, (jint)cpool->int_at(index)); 603 } else if (tag.is_long()) { 604 return ciConstant((jlong)cpool->long_at(index)); 605 } else if (tag.is_float()) { 606 return ciConstant((jfloat)cpool->float_at(index)); 607 } else if (tag.is_double()) { 608 return ciConstant((jdouble)cpool->double_at(index)); 609 } else if (tag.is_string()) { 610 oop string = NULL; 611 assert(cache_index >= 0, "should have a cache index"); 612 if (cpool->is_pseudo_string_at(index)) { 613 string = cpool->pseudo_string_at(index, cache_index); 614 } else { 615 string = cpool->string_at(index, cache_index, THREAD); 616 if (HAS_PENDING_EXCEPTION) { 617 CLEAR_PENDING_EXCEPTION; 618 record_out_of_memory_failure(); 619 return ciConstant(); 620 } 621 } 622 ciObject* constant = get_object(string); 623 if (constant->is_array()) { 624 return ciConstant(T_ARRAY, constant); 625 } else { 626 assert (constant->is_instance(), "must be an instance, or not? "); 627 return ciConstant(T_OBJECT, constant); 628 } 629 } else if (tag.is_klass() || tag.is_unresolved_klass()) { 630 // 4881222: allow ldc to take a class type 631 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); 632 if (HAS_PENDING_EXCEPTION) { 633 CLEAR_PENDING_EXCEPTION; 634 record_out_of_memory_failure(); 635 return ciConstant(); 636 } 637 assert (klass->is_instance_klass() || klass->is_array_klass(), 638 "must be an instance or array klass "); 639 return ciConstant(T_OBJECT, klass->java_mirror()); 640 } else if (tag.is_method_type()) { 641 // must execute Java code to link this CP entry into cache[i].f1 642 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); 643 ciObject* ciobj = get_unloaded_method_type_constant(signature); 644 return ciConstant(T_OBJECT, ciobj); 645 } else if (tag.is_method_handle()) { 646 // must execute Java code to link this CP entry into cache[i].f1 647 int ref_kind = cpool->method_handle_ref_kind_at(index); 648 int callee_index = cpool->method_handle_klass_index_at(index); 649 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); 650 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); 651 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); 652 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); 653 return ciConstant(T_OBJECT, ciobj); 654 } else { 655 ShouldNotReachHere(); 656 return ciConstant(); 657 } 658 } 659 660 // ------------------------------------------------------------------ 661 // ciEnv::get_constant_by_index 662 // 663 // Pull a constant out of the constant pool. How appropriate. 664 // 665 // Implementation note: this query is currently in no way cached. 666 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool, 667 int pool_index, int cache_index, 668 ciInstanceKlass* accessor) { 669 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) 670 } 671 672 // ------------------------------------------------------------------ 673 // ciEnv::get_field_by_index_impl 674 // 675 // Implementation of get_field_by_index. 676 // 677 // Implementation note: the results of field lookups are cached 678 // in the accessor klass. 679 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, 680 int index) { 681 ciConstantPoolCache* cache = accessor->field_cache(); 682 if (cache == NULL) { 683 ciField* field = new (arena()) ciField(accessor, index); 684 return field; 685 } else { 686 ciField* field = (ciField*)cache->get(index); 687 if (field == NULL) { 688 field = new (arena()) ciField(accessor, index); 689 cache->insert(index, field); 690 } 691 return field; 692 } 693 } 694 695 // ------------------------------------------------------------------ 696 // ciEnv::get_field_by_index 697 // 698 // Get a field by index from a klass's constant pool. 699 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, 700 int index) { 701 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) 702 } 703 704 // ------------------------------------------------------------------ 705 // ciEnv::lookup_method 706 // 707 // Perform an appropriate method lookup based on accessor, holder, 708 // name, signature, and bytecode. 709 Method* ciEnv::lookup_method(ciInstanceKlass* accessor, 710 ciKlass* holder, 711 Symbol* name, 712 Symbol* sig, 713 Bytecodes::Code bc, 714 constantTag tag) { 715 // Accessibility checks are performed in ciEnv::get_method_by_index_impl. 716 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible"); 717 718 InstanceKlass* accessor_klass = accessor->get_instanceKlass(); 719 Klass* holder_klass = holder->get_Klass(); 720 methodHandle dest_method; 721 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag); 722 switch (bc) { 723 case Bytecodes::_invokestatic: 724 dest_method = 725 LinkResolver::resolve_static_call_or_null(link_info); 726 break; 727 case Bytecodes::_invokespecial: 728 dest_method = 729 LinkResolver::resolve_special_call_or_null(link_info); 730 break; 731 case Bytecodes::_invokeinterface: 732 dest_method = 733 LinkResolver::linktime_resolve_interface_method_or_null(link_info); 734 break; 735 case Bytecodes::_invokevirtual: 736 dest_method = 737 LinkResolver::linktime_resolve_virtual_method_or_null(link_info); 738 break; 739 default: ShouldNotReachHere(); 740 } 741 742 return dest_method(); 743 } 744 745 746 // ------------------------------------------------------------------ 747 // ciEnv::get_method_by_index_impl 748 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool, 749 int index, Bytecodes::Code bc, 750 ciInstanceKlass* accessor) { 751 if (bc == Bytecodes::_invokedynamic) { 752 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); 753 bool is_resolved = !cpce->is_f1_null(); 754 // FIXME: code generation could allow for null (unlinked) call site 755 // The call site could be made patchable as follows: 756 // Load the appendix argument from the constant pool. 757 // Test the appendix argument and jump to a known deopt routine if it is null. 758 // Jump through a patchable call site, which is initially a deopt routine. 759 // Patch the call site to the nmethod entry point of the static compiled lambda form. 760 // As with other two-component call sites, both values must be independently verified. 761 762 if (is_resolved) { 763 // Get the invoker Method* from the constant pool. 764 // (The appendix argument, if any, will be noted in the method's signature.) 765 Method* adapter = cpce->f1_as_method(); 766 return get_method(adapter); 767 } 768 769 // Fake a method that is equivalent to a declared method. 770 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); 771 ciSymbol* name = ciSymbol::invokeBasic_name(); 772 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); 773 return get_unloaded_method(holder, name, signature, accessor); 774 } else { 775 const int holder_index = cpool->klass_ref_index_at(index); 776 bool holder_is_accessible; 777 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); 778 779 // Get the method's name and signature. 780 Symbol* name_sym = cpool->name_ref_at(index); 781 Symbol* sig_sym = cpool->signature_ref_at(index); 782 783 if (cpool->has_preresolution() 784 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) && 785 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { 786 // Short-circuit lookups for JSR 292-related call sites. 787 // That is, do not rely only on name-based lookups, because they may fail 788 // if the names are not resolvable in the boot class loader (7056328). 789 switch (bc) { 790 case Bytecodes::_invokevirtual: 791 case Bytecodes::_invokeinterface: 792 case Bytecodes::_invokespecial: 793 case Bytecodes::_invokestatic: 794 { 795 Method* m = ConstantPool::method_at_if_loaded(cpool, index); 796 if (m != NULL) { 797 return get_method(m); 798 } 799 } 800 break; 801 } 802 } 803 804 if (holder_is_accessible) { // Our declared holder is loaded. 805 constantTag tag = cpool->tag_ref_at(index); 806 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?"); 807 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag); 808 if (m != NULL && 809 (bc == Bytecodes::_invokestatic 810 ? m->method_holder()->is_not_initialized() 811 : !m->method_holder()->is_loaded())) { 812 m = NULL; 813 } 814 #ifdef ASSERT 815 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { 816 m = NULL; 817 } 818 #endif 819 if (m != NULL) { 820 // We found the method. 821 return get_method(m); 822 } 823 } 824 825 // Either the declared holder was not loaded, or the method could 826 // not be found. Create a dummy ciMethod to represent the failed 827 // lookup. 828 ciSymbol* name = get_symbol(name_sym); 829 ciSymbol* signature = get_symbol(sig_sym); 830 return get_unloaded_method(holder, name, signature, accessor); 831 } 832 } 833 834 835 // ------------------------------------------------------------------ 836 // ciEnv::get_instance_klass_for_declared_method_holder 837 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { 838 // For the case of <array>.clone(), the method holder can be a ciArrayKlass 839 // instead of a ciInstanceKlass. For that case simply pretend that the 840 // declared holder is Object.clone since that's where the call will bottom out. 841 // A more correct fix would trickle out through many interfaces in CI, 842 // requiring ciInstanceKlass* to become ciKlass* and many more places would 843 // require checks to make sure the expected type was found. Given that this 844 // only occurs for clone() the more extensive fix seems like overkill so 845 // instead we simply smear the array type into Object. 846 guarantee(method_holder != NULL, "no method holder"); 847 if (method_holder->is_instance_klass()) { 848 return method_holder->as_instance_klass(); 849 } else if (method_holder->is_array_klass()) { 850 return current()->Object_klass(); 851 } else { 852 ShouldNotReachHere(); 853 } 854 return NULL; 855 } 856 857 858 // ------------------------------------------------------------------ 859 // ciEnv::get_method_by_index 860 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool, 861 int index, Bytecodes::Code bc, 862 ciInstanceKlass* accessor) { 863 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) 864 } 865 866 867 // ------------------------------------------------------------------ 868 // ciEnv::name_buffer 869 char *ciEnv::name_buffer(int req_len) { 870 if (_name_buffer_len < req_len) { 871 if (_name_buffer == NULL) { 872 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); 873 _name_buffer_len = req_len; 874 } else { 875 _name_buffer = 876 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); 877 _name_buffer_len = req_len; 878 } 879 } 880 return _name_buffer; 881 } 882 883 // ------------------------------------------------------------------ 884 // ciEnv::is_in_vm 885 bool ciEnv::is_in_vm() { 886 return JavaThread::current()->thread_state() == _thread_in_vm; 887 } 888 889 bool ciEnv::system_dictionary_modification_counter_changed() { 890 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); 891 } 892 893 // ------------------------------------------------------------------ 894 // ciEnv::validate_compile_task_dependencies 895 // 896 // Check for changes during compilation (e.g. class loads, evolution, 897 // breakpoints, call site invalidation). 898 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { 899 if (failing()) return; // no need for further checks 900 901 // First, check non-klass dependencies as we might return early and 902 // not check klass dependencies if the system dictionary 903 // modification counter hasn't changed (see below). 904 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 905 if (deps.is_klass_type()) continue; // skip klass dependencies 906 Klass* witness = deps.check_dependency(); 907 if (witness != NULL) { 908 if (deps.type() == Dependencies::call_site_target_value) { 909 _inc_decompile_count_on_failure = false; 910 record_failure("call site target change"); 911 } else { 912 record_failure("invalid non-klass dependency"); 913 } 914 return; 915 } 916 } 917 918 // Klass dependencies must be checked when the system dictionary 919 // changes. If logging is enabled all violated dependences will be 920 // recorded in the log. In debug mode check dependencies even if 921 // the system dictionary hasn't changed to verify that no invalid 922 // dependencies were inserted. Any violated dependences in this 923 // case are dumped to the tty. 924 bool counter_changed = system_dictionary_modification_counter_changed(); 925 926 bool verify_deps = trueInDebug; 927 if (!counter_changed && !verify_deps) return; 928 929 int klass_violations = 0; 930 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 931 if (!deps.is_klass_type()) continue; // skip non-klass dependencies 932 Klass* witness = deps.check_dependency(); 933 if (witness != NULL) { 934 klass_violations++; 935 if (!counter_changed) { 936 // Dependence failed but counter didn't change. Log a message 937 // describing what failed and allow the assert at the end to 938 // trigger. 939 deps.print_dependency(witness); 940 } else if (xtty == NULL) { 941 // If we're not logging then a single violation is sufficient, 942 // otherwise we want to log all the dependences which were 943 // violated. 944 break; 945 } 946 } 947 } 948 949 if (klass_violations != 0) { 950 #ifdef ASSERT 951 if (!counter_changed && !PrintCompilation) { 952 // Print out the compile task that failed 953 _task->print_tty(); 954 } 955 #endif 956 assert(counter_changed, "failed dependencies, but counter didn't change"); 957 record_failure("concurrent class loading"); 958 } 959 } 960 961 // ------------------------------------------------------------------ 962 // ciEnv::register_method 963 void ciEnv::register_method(ciMethod* target, 964 int entry_bci, 965 CodeOffsets* offsets, 966 int orig_pc_offset, 967 CodeBuffer* code_buffer, 968 int frame_words, 969 OopMapSet* oop_map_set, 970 ExceptionHandlerTable* handler_table, 971 ImplicitExceptionTable* inc_table, 972 AbstractCompiler* compiler, 973 bool has_unsafe_access, 974 bool has_wide_vectors, 975 RTMState rtm_state) { 976 VM_ENTRY_MARK; 977 nmethod* nm = NULL; 978 { 979 // To prevent compile queue updates. 980 MutexLocker locker(MethodCompileQueue_lock, THREAD); 981 982 // Prevent SystemDictionary::add_to_hierarchy from running 983 // and invalidating our dependencies until we install this method. 984 // No safepoints are allowed. Otherwise, class redefinition can occur in between. 985 MutexLocker ml(Compile_lock); 986 NoSafepointVerifier nsv; 987 988 // Change in Jvmti state may invalidate compilation. 989 if (!failing() && jvmti_state_changed()) { 990 record_failure("Jvmti state change invalidated dependencies"); 991 } 992 993 // Change in DTrace flags may invalidate compilation. 994 if (!failing() && 995 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || 996 (!dtrace_method_probes() && DTraceMethodProbes) || 997 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { 998 record_failure("DTrace flags change invalidated dependencies"); 999 } 1000 1001 if (!failing()) { 1002 if (log() != NULL) { 1003 // Log the dependencies which this compilation declares. 1004 dependencies()->log_all_dependencies(); 1005 } 1006 1007 // Encode the dependencies now, so we can check them right away. 1008 dependencies()->encode_content_bytes(); 1009 1010 // Check for {class loads, evolution, breakpoints, ...} during compilation 1011 validate_compile_task_dependencies(target); 1012 } 1013 1014 methodHandle method(THREAD, target->get_Method()); 1015 1016 #if INCLUDE_RTM_OPT 1017 if (!failing() && (rtm_state != NoRTM) && 1018 (method()->method_data() != NULL) && 1019 (method()->method_data()->rtm_state() != rtm_state)) { 1020 // Preemptive decompile if rtm state was changed. 1021 record_failure("RTM state change invalidated rtm code"); 1022 } 1023 #endif 1024 1025 if (failing()) { 1026 // While not a true deoptimization, it is a preemptive decompile. 1027 MethodData* mdo = method()->method_data(); 1028 if (mdo != NULL && _inc_decompile_count_on_failure) { 1029 mdo->inc_decompile_count(); 1030 } 1031 1032 // All buffers in the CodeBuffer are allocated in the CodeCache. 1033 // If the code buffer is created on each compile attempt 1034 // as in C2, then it must be freed. 1035 code_buffer->free_blob(); 1036 return; 1037 } 1038 1039 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); 1040 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); 1041 1042 nm = nmethod::new_nmethod(method, 1043 compile_id(), 1044 entry_bci, 1045 offsets, 1046 orig_pc_offset, 1047 debug_info(), dependencies(), code_buffer, 1048 frame_words, oop_map_set, 1049 handler_table, inc_table, 1050 compiler, task()->comp_level()); 1051 1052 // Free codeBlobs 1053 code_buffer->free_blob(); 1054 1055 if (nm != NULL) { 1056 nm->set_has_unsafe_access(has_unsafe_access); 1057 nm->set_has_wide_vectors(has_wide_vectors); 1058 #if INCLUDE_RTM_OPT 1059 nm->set_rtm_state(rtm_state); 1060 #endif 1061 1062 // Record successful registration. 1063 // (Put nm into the task handle *before* publishing to the Java heap.) 1064 if (task() != NULL) { 1065 task()->set_code(nm); 1066 } 1067 1068 if (entry_bci == InvocationEntryBci) { 1069 if (TieredCompilation) { 1070 // If there is an old version we're done with it 1071 CompiledMethod* old = method->code(); 1072 if (TraceMethodReplacement && old != NULL) { 1073 ResourceMark rm; 1074 char *method_name = method->name_and_sig_as_C_string(); 1075 tty->print_cr("Replacing method %s", method_name); 1076 } 1077 if (old != NULL) { 1078 old->make_not_used(); 1079 } 1080 } 1081 if (TraceNMethodInstalls) { 1082 ResourceMark rm; 1083 char *method_name = method->name_and_sig_as_C_string(); 1084 ttyLocker ttyl; 1085 tty->print_cr("Installing method (%d) %s ", 1086 task()->comp_level(), 1087 method_name); 1088 } 1089 // Allow the code to be executed 1090 method->set_code(method, nm); 1091 } else { 1092 if (TraceNMethodInstalls) { 1093 ResourceMark rm; 1094 char *method_name = method->name_and_sig_as_C_string(); 1095 ttyLocker ttyl; 1096 tty->print_cr("Installing osr method (%d) %s @ %d", 1097 task()->comp_level(), 1098 method_name, 1099 entry_bci); 1100 } 1101 method->method_holder()->add_osr_nmethod(nm); 1102 } 1103 } 1104 } // safepoints are allowed again 1105 1106 if (nm != NULL) { 1107 // JVMTI -- compiled method notification (must be done outside lock) 1108 nm->post_compiled_method_load_event(); 1109 } else { 1110 // The CodeCache is full. 1111 record_failure("code cache is full"); 1112 } 1113 } 1114 1115 1116 // ------------------------------------------------------------------ 1117 // ciEnv::find_system_klass 1118 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { 1119 VM_ENTRY_MARK; 1120 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); 1121 } 1122 1123 // ------------------------------------------------------------------ 1124 // ciEnv::comp_level 1125 int ciEnv::comp_level() { 1126 if (task() == NULL) return CompLevel_highest_tier; 1127 return task()->comp_level(); 1128 } 1129 1130 // ------------------------------------------------------------------ 1131 // ciEnv::compile_id 1132 uint ciEnv::compile_id() { 1133 if (task() == NULL) return 0; 1134 return task()->compile_id(); 1135 } 1136 1137 // ------------------------------------------------------------------ 1138 // ciEnv::notice_inlined_method() 1139 void ciEnv::notice_inlined_method(ciMethod* method) { 1140 _num_inlined_bytecodes += method->code_size_for_inlining(); 1141 } 1142 1143 // ------------------------------------------------------------------ 1144 // ciEnv::num_inlined_bytecodes() 1145 int ciEnv::num_inlined_bytecodes() const { 1146 return _num_inlined_bytecodes; 1147 } 1148 1149 // ------------------------------------------------------------------ 1150 // ciEnv::record_failure() 1151 void ciEnv::record_failure(const char* reason) { 1152 if (_failure_reason == NULL) { 1153 // Record the first failure reason. 1154 _failure_reason = reason; 1155 } 1156 } 1157 1158 void ciEnv::report_failure(const char* reason) { 1159 #if INCLUDE_TRACE 1160 EventCompilationFailure event; 1161 if (event.should_commit()) { 1162 event.set_compileId(compile_id()); 1163 event.set_failureMessage(reason); 1164 event.commit(); 1165 } 1166 #endif 1167 } 1168 1169 // ------------------------------------------------------------------ 1170 // ciEnv::record_method_not_compilable() 1171 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { 1172 int new_compilable = 1173 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; 1174 1175 // Only note transitions to a worse state 1176 if (new_compilable > _compilable) { 1177 if (log() != NULL) { 1178 if (all_tiers) { 1179 log()->elem("method_not_compilable"); 1180 } else { 1181 log()->elem("method_not_compilable_at_tier level='%d'", 1182 current()->task()->comp_level()); 1183 } 1184 } 1185 _compilable = new_compilable; 1186 1187 // Reset failure reason; this one is more important. 1188 _failure_reason = NULL; 1189 record_failure(reason); 1190 } 1191 } 1192 1193 // ------------------------------------------------------------------ 1194 // ciEnv::record_out_of_memory_failure() 1195 void ciEnv::record_out_of_memory_failure() { 1196 // If memory is low, we stop compiling methods. 1197 record_method_not_compilable("out of memory"); 1198 } 1199 1200 ciInstance* ciEnv::unloaded_ciinstance() { 1201 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) 1202 } 1203 1204 // ------------------------------------------------------------------ 1205 // ciEnv::dump_replay_data* 1206 1207 // Don't change thread state and acquire any locks. 1208 // Safe to call from VM error reporter. 1209 1210 void ciEnv::dump_compile_data(outputStream* out) { 1211 CompileTask* task = this->task(); 1212 Method* method = task->method(); 1213 int entry_bci = task->osr_bci(); 1214 int comp_level = task->comp_level(); 1215 out->print("compile %s %s %s %d %d", 1216 method->klass_name()->as_quoted_ascii(), 1217 method->name()->as_quoted_ascii(), 1218 method->signature()->as_quoted_ascii(), 1219 entry_bci, comp_level); 1220 if (compiler_data() != NULL) { 1221 if (is_c2_compile(comp_level)) { // C2 or Shark 1222 #ifdef COMPILER2 1223 // Dump C2 inlining data. 1224 ((Compile*)compiler_data())->dump_inline_data(out); 1225 #endif 1226 } else if (is_c1_compile(comp_level)) { // C1 1227 #ifdef COMPILER1 1228 // Dump C1 inlining data. 1229 ((Compilation*)compiler_data())->dump_inline_data(out); 1230 #endif 1231 } 1232 } 1233 out->cr(); 1234 } 1235 1236 void ciEnv::dump_replay_data_unsafe(outputStream* out) { 1237 ResourceMark rm; 1238 #if INCLUDE_JVMTI 1239 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); 1240 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); 1241 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); 1242 #endif // INCLUDE_JVMTI 1243 1244 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); 1245 out->print_cr("# %d ciObject found", objects->length()); 1246 for (int i = 0; i < objects->length(); i++) { 1247 objects->at(i)->dump_replay_data(out); 1248 } 1249 dump_compile_data(out); 1250 out->flush(); 1251 } 1252 1253 void ciEnv::dump_replay_data(outputStream* out) { 1254 GUARDED_VM_ENTRY( 1255 MutexLocker ml(Compile_lock); 1256 dump_replay_data_unsafe(out); 1257 ) 1258 } 1259 1260 void ciEnv::dump_replay_data(int compile_id) { 1261 static char buffer[O_BUFLEN]; 1262 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id); 1263 if (ret > 0) { 1264 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1265 if (fd != -1) { 1266 FILE* replay_data_file = os::open(fd, "w"); 1267 if (replay_data_file != NULL) { 1268 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1269 dump_replay_data(&replay_data_stream); 1270 tty->print_cr("# Compiler replay data is saved as: %s", buffer); 1271 } else { 1272 tty->print_cr("# Can't open file to dump replay data."); 1273 } 1274 } 1275 } 1276 } 1277 1278 void ciEnv::dump_inline_data(int compile_id) { 1279 static char buffer[O_BUFLEN]; 1280 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id); 1281 if (ret > 0) { 1282 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1283 if (fd != -1) { 1284 FILE* inline_data_file = os::open(fd, "w"); 1285 if (inline_data_file != NULL) { 1286 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); 1287 GUARDED_VM_ENTRY( 1288 MutexLocker ml(Compile_lock); 1289 dump_compile_data(&replay_data_stream); 1290 ) 1291 replay_data_stream.flush(); 1292 tty->print("# Compiler inline data is saved as: "); 1293 tty->print_cr("%s", buffer); 1294 } else { 1295 tty->print_cr("# Can't open file to dump inline data."); 1296 } 1297 } 1298 } 1299 }