1/* 2 * Copyright (c) 1999, 2016, 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 "trace/tracing.hpp" 58#include "utilities/dtrace.hpp" 59#include "utilities/macros.hpp" 60#ifdef COMPILER1 61#include "c1/c1_Runtime1.hpp" 62#endif 63#ifdef COMPILER2 64#include "opto/runtime.hpp" 65#endif 66 67// ciEnv 68// 69// This class is the top level broker for requests from the compiler 70// to the VM. 71 72ciObject* ciEnv::_null_object_instance; 73 74#define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; 75WK_KLASSES_DO(WK_KLASS_DEFN) 76#undef WK_KLASS_DEFN 77 78ciSymbol* ciEnv::_unloaded_cisymbol = NULL; 79ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; 80ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; 81 82jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; 83jobject ciEnv::_ArrayStoreException_handle = NULL; 84jobject ciEnv::_ClassCastException_handle = NULL; 85 86#ifndef PRODUCT 87static bool firstEnv = true; 88#endif /* PRODUCT */ 89 90// ------------------------------------------------------------------ 91// ciEnv::ciEnv 92ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) 93 : _ciEnv_arena(mtCompiler) { 94 VM_ENTRY_MARK; 95 96 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 97 thread->set_env(this); 98 assert(ciEnv::current() == this, "sanity"); 99 100 _oop_recorder = NULL; 101 _debug_info = NULL; 102 _dependencies = NULL; 103 _failure_reason = NULL; 104 _inc_decompile_count_on_failure = true; 105 _compilable = MethodCompilable; 106 _break_at_compile = false; 107 _compiler_data = NULL; 108#ifndef PRODUCT 109 assert(!firstEnv, "not initialized properly"); 110#endif /* !PRODUCT */ 111 112 _system_dictionary_modification_counter = system_dictionary_modification_counter; 113 _num_inlined_bytecodes = 0; 114 assert(task == NULL || thread->task() == task, "sanity"); 115 _task = task; 116 _log = NULL; 117 118 // Temporary buffer for creating symbols and such. 119 _name_buffer = NULL; 120 _name_buffer_len = 0; 121 122 _arena = &_ciEnv_arena; 123 _factory = new (_arena) ciObjectFactory(_arena, 128); 124 125 // Preload commonly referenced system ciObjects. 126 127 // During VM initialization, these instances have not yet been created. 128 // Assertions ensure that these instances are not accessed before 129 // their initialization. 130 131 assert(Universe::is_fully_initialized(), "should be complete"); 132 133 oop o = Universe::null_ptr_exception_instance(); 134 assert(o != NULL, "should have been initialized"); 135 _NullPointerException_instance = get_object(o)->as_instance(); 136 o = Universe::arithmetic_exception_instance(); 137 assert(o != NULL, "should have been initialized"); 138 _ArithmeticException_instance = get_object(o)->as_instance(); 139 140 _ArrayIndexOutOfBoundsException_instance = NULL; 141 _ArrayStoreException_instance = NULL; 142 _ClassCastException_instance = NULL; 143 _the_null_string = NULL; 144 _the_min_jint_string = NULL; 145 146 _jvmti_can_hotswap_or_post_breakpoint = false; 147 _jvmti_can_access_local_variables = false; 148 _jvmti_can_post_on_exceptions = false; 149 _jvmti_can_pop_frame = false; 150} 151 152ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) { 153 ASSERT_IN_VM; 154 155 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 156 CompilerThread* current_thread = CompilerThread::current(); 157 assert(current_thread->env() == NULL, "must be"); 158 current_thread->set_env(this); 159 assert(ciEnv::current() == this, "sanity"); 160 161 _oop_recorder = NULL; 162 _debug_info = NULL; 163 _dependencies = NULL; 164 _failure_reason = NULL; 165 _inc_decompile_count_on_failure = true; 166 _compilable = MethodCompilable_never; 167 _break_at_compile = false; 168 _compiler_data = NULL; 169#ifndef PRODUCT 170 assert(firstEnv, "must be first"); 171 firstEnv = false; 172#endif /* !PRODUCT */ 173 174 _system_dictionary_modification_counter = 0; 175 _num_inlined_bytecodes = 0; 176 _task = NULL; 177 _log = NULL; 178 179 // Temporary buffer for creating symbols and such. 180 _name_buffer = NULL; 181 _name_buffer_len = 0; 182 183 _arena = arena; 184 _factory = new (_arena) ciObjectFactory(_arena, 128); 185 186 // Preload commonly referenced system ciObjects. 187 188 // During VM initialization, these instances have not yet been created. 189 // Assertions ensure that these instances are not accessed before 190 // their initialization. 191 192 assert(Universe::is_fully_initialized(), "must be"); 193 194 _NullPointerException_instance = NULL; 195 _ArithmeticException_instance = NULL; 196 _ArrayIndexOutOfBoundsException_instance = NULL; 197 _ArrayStoreException_instance = NULL; 198 _ClassCastException_instance = NULL; 199 _the_null_string = NULL; 200 _the_min_jint_string = NULL; 201 202 _jvmti_can_hotswap_or_post_breakpoint = false; 203 _jvmti_can_access_local_variables = false; 204 _jvmti_can_post_on_exceptions = false; 205 _jvmti_can_pop_frame = false; 206} 207 208ciEnv::~ciEnv() { 209 GUARDED_VM_ENTRY( 210 CompilerThread* current_thread = CompilerThread::current(); 211 _factory->remove_symbols(); 212 // Need safepoint to clear the env on the thread. RedefineClasses might 213 // be reading it. 214 current_thread->set_env(NULL); 215 ) 216} 217 218// ------------------------------------------------------------------ 219// Cache Jvmti state 220void ciEnv::cache_jvmti_state() { 221 VM_ENTRY_MARK; 222 // Get Jvmti capabilities under lock to get consistant values. 223 MutexLocker mu(JvmtiThreadState_lock); 224 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); 225 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); 226 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); 227 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame(); 228} 229 230bool ciEnv::should_retain_local_variables() const { 231 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame; 232} 233 234bool ciEnv::jvmti_state_changed() const { 235 if (!_jvmti_can_access_local_variables && 236 JvmtiExport::can_access_local_variables()) { 237 return true; 238 } 239 if (!_jvmti_can_hotswap_or_post_breakpoint && 240 JvmtiExport::can_hotswap_or_post_breakpoint()) { 241 return true; 242 } 243 if (!_jvmti_can_post_on_exceptions && 244 JvmtiExport::can_post_on_exceptions()) { 245 return true; 246 } 247 if (!_jvmti_can_pop_frame && 248 JvmtiExport::can_pop_frame()) { 249 return true; 250 } 251 return false; 252} 253 254// ------------------------------------------------------------------ 255// Cache DTrace flags 256void ciEnv::cache_dtrace_flags() { 257 // Need lock? 258 _dtrace_extended_probes = ExtendedDTraceProbes; 259 if (_dtrace_extended_probes) { 260 _dtrace_monitor_probes = true; 261 _dtrace_method_probes = true; 262 _dtrace_alloc_probes = true; 263 } else { 264 _dtrace_monitor_probes = DTraceMonitorProbes; 265 _dtrace_method_probes = DTraceMethodProbes; 266 _dtrace_alloc_probes = DTraceAllocProbes; 267 } 268} 269 270// ------------------------------------------------------------------ 271// helper for lazy exception creation 272ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { 273 VM_ENTRY_MARK; 274 if (handle == NULL) { 275 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. 276 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); 277 jobject objh = NULL; 278 if (!HAS_PENDING_EXCEPTION && k != NULL) { 279 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); 280 if (!HAS_PENDING_EXCEPTION) 281 objh = JNIHandles::make_global(obj); 282 } 283 if (HAS_PENDING_EXCEPTION) { 284 CLEAR_PENDING_EXCEPTION; 285 } else { 286 handle = objh; 287 } 288 } 289 oop obj = JNIHandles::resolve(handle); 290 return obj == NULL? NULL: get_object(obj)->as_instance(); 291} 292 293ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { 294 if (_ArrayIndexOutOfBoundsException_instance == NULL) { 295 _ArrayIndexOutOfBoundsException_instance 296 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, 297 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 298 } 299 return _ArrayIndexOutOfBoundsException_instance; 300} 301ciInstance* ciEnv::ArrayStoreException_instance() { 302 if (_ArrayStoreException_instance == NULL) { 303 _ArrayStoreException_instance 304 = get_or_create_exception(_ArrayStoreException_handle, 305 vmSymbols::java_lang_ArrayStoreException()); 306 } 307 return _ArrayStoreException_instance; 308} 309ciInstance* ciEnv::ClassCastException_instance() { 310 if (_ClassCastException_instance == NULL) { 311 _ClassCastException_instance 312 = get_or_create_exception(_ClassCastException_handle, 313 vmSymbols::java_lang_ClassCastException()); 314 } 315 return _ClassCastException_instance; 316} 317 318ciInstance* ciEnv::the_null_string() { 319 if (_the_null_string == NULL) { 320 VM_ENTRY_MARK; 321 _the_null_string = get_object(Universe::the_null_string())->as_instance(); 322 } 323 return _the_null_string; 324} 325 326ciInstance* ciEnv::the_min_jint_string() { 327 if (_the_min_jint_string == NULL) { 328 VM_ENTRY_MARK; 329 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); 330 } 331 return _the_min_jint_string; 332} 333 334// ------------------------------------------------------------------ 335// ciEnv::get_method_from_handle 336ciMethod* ciEnv::get_method_from_handle(Method* method) { 337 VM_ENTRY_MARK; 338 return get_metadata(method)->as_method(); 339} 340 341// ------------------------------------------------------------------ 342// ciEnv::array_element_offset_in_bytes 343int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { 344 VM_ENTRY_MARK; 345 objArrayOop a = (objArrayOop)a_h->get_oop(); 346 assert(a->is_objArray(), ""); 347 int length = a->length(); 348 oop o = o_h->get_oop(); 349 for (int i = 0; i < length; i++) { 350 if (a->obj_at(i) == o) return i; 351 } 352 return -1; 353} 354 355 356// ------------------------------------------------------------------ 357// ciEnv::check_klass_accessiblity 358// 359// Note: the logic of this method should mirror the logic of 360// ConstantPool::verify_constant_pool_resolve. 361bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, 362 Klass* resolved_klass) { 363 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { 364 return true; 365 } 366 if (accessing_klass->is_obj_array_klass()) { 367 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); 368 } 369 if (!accessing_klass->is_instance_klass()) { 370 return true; 371 } 372 373 if (resolved_klass->is_objArray_klass()) { 374 // Find the element klass, if this is an array. 375 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); 376 } 377 if (resolved_klass->is_instance_klass()) { 378 return (Reflection::verify_class_access(accessing_klass->get_Klass(), 379 resolved_klass, 380 true) == Reflection::ACCESS_OK); 381 } 382 return true; 383} 384 385// ------------------------------------------------------------------ 386// ciEnv::get_klass_by_name_impl 387ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, 388 const constantPoolHandle& cpool, 389 ciSymbol* name, 390 bool require_local) { 391 ASSERT_IN_VM; 392 EXCEPTION_CONTEXT; 393 394 // Now we need to check the SystemDictionary 395 Symbol* sym = name->get_symbol(); 396 if (sym->byte_at(0) == 'L' && 397 sym->byte_at(sym->utf8_length()-1) == ';') { 398 // This is a name from a signature. Strip off the trimmings. 399 // Call recursive to keep scope of strippedsym. 400 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, 401 sym->utf8_length()-2, 402 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); 403 ciSymbol* strippedname = get_symbol(strippedsym); 404 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); 405 } 406 407 // Check for prior unloaded klass. The SystemDictionary's answers 408 // can vary over time but the compiler needs consistency. 409 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); 410 if (unloaded_klass != NULL) { 411 if (require_local) return NULL; 412 return unloaded_klass; 413 } 414 415 Handle loader(THREAD, (oop)NULL); 416 Handle domain(THREAD, (oop)NULL); 417 if (accessing_klass != NULL) { 418 loader = Handle(THREAD, accessing_klass->loader()); 419 domain = Handle(THREAD, accessing_klass->protection_domain()); 420 } 421 422 // setup up the proper type to return on OOM 423 ciKlass* fail_type; 424 if (sym->byte_at(0) == '[') { 425 fail_type = _unloaded_ciobjarrayklass; 426 } else { 427 fail_type = _unloaded_ciinstance_klass; 428 } 429 KlassHandle found_klass; 430 { 431 ttyUnlocker ttyul; // release tty lock to avoid ordering problems 432 MutexLocker ml(Compile_lock); 433 Klass* kls; 434 if (!require_local) { 435 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, 436 KILL_COMPILE_ON_FATAL_(fail_type)); 437 } else { 438 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, 439 KILL_COMPILE_ON_FATAL_(fail_type)); 440 } 441 found_klass = KlassHandle(THREAD, kls); 442 } 443 444 // If we fail to find an array klass, look again for its element type. 445 // The element type may be available either locally or via constraints. 446 // In either case, if we can find the element type in the system dictionary, 447 // we must build an array type around it. The CI requires array klasses 448 // to be loaded if their element klasses are loaded, except when memory 449 // is exhausted. 450 if (sym->byte_at(0) == '[' && 451 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { 452 // We have an unloaded array. 453 // Build it on the fly if the element class exists. 454 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, 455 sym->utf8_length()-1, 456 KILL_COMPILE_ON_FATAL_(fail_type)); 457 458 // Get element ciKlass recursively. 459 ciKlass* elem_klass = 460 get_klass_by_name_impl(accessing_klass, 461 cpool, 462 get_symbol(elem_sym), 463 require_local); 464 if (elem_klass != NULL && elem_klass->is_loaded()) { 465 // Now make an array for it 466 return ciObjArrayKlass::make_impl(elem_klass); 467 } 468 } 469 470 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { 471 // Look inside the constant pool for pre-resolved class entries. 472 for (int i = cpool->length() - 1; i >= 1; i--) { 473 if (cpool->tag_at(i).is_klass()) { 474 Klass* kls = cpool->resolved_klass_at(i); 475 if (kls->name() == sym) { 476 found_klass = KlassHandle(THREAD, kls); 477 break; 478 } 479 } 480 } 481 } 482 483 if (found_klass() != NULL) { 484 // Found it. Build a CI handle. 485 return get_klass(found_klass()); 486 } 487 488 if (require_local) return NULL; 489 490 // Not yet loaded into the VM, or not governed by loader constraints. 491 // Make a CI representative for it. 492 return get_unloaded_klass(accessing_klass, name); 493} 494 495// ------------------------------------------------------------------ 496// ciEnv::get_klass_by_name 497ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, 498 ciSymbol* klass_name, 499 bool require_local) { 500 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, 501 constantPoolHandle(), 502 klass_name, 503 require_local);) 504} 505 506// ------------------------------------------------------------------ 507// ciEnv::get_klass_by_index_impl 508// 509// Implementation of get_klass_by_index. 510ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool, 511 int index, 512 bool& is_accessible, 513 ciInstanceKlass* accessor) { 514 EXCEPTION_CONTEXT; 515 KlassHandle klass; // = NULL; 516 Symbol* klass_name = NULL; 517 518 if (cpool->tag_at(index).is_symbol()) { 519 klass_name = cpool->symbol_at(index); 520 } else { 521 // Check if it's resolved if it's not a symbol constant pool entry. 522 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); 523 // Try to look it up by name. 524 if (klass.is_null()) { 525 klass_name = cpool->klass_name_at(index); 526 } 527 } 528 529 if (klass.is_null()) { 530 // Not found in constant pool. Use the name to do the lookup. 531 ciKlass* k = get_klass_by_name_impl(accessor, 532 cpool, 533 get_symbol(klass_name), 534 false); 535 // Calculate accessibility the hard way. 536 if (!k->is_loaded()) { 537 is_accessible = false; 538 } else if (k->loader() != accessor->loader() && 539 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { 540 // Loaded only remotely. Not linked yet. 541 is_accessible = false; 542 } else { 543 // Linked locally, and we must also check public/private, etc. 544 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); 545 } 546 return k; 547 } 548 549 // Check for prior unloaded klass. The SystemDictionary's answers 550 // can vary over time but the compiler needs consistency. 551 ciSymbol* name = get_symbol(klass()->name()); 552 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); 553 if (unloaded_klass != NULL) { 554 is_accessible = false; 555 return unloaded_klass; 556 } 557 558 // It is known to be accessible, since it was found in the constant pool. 559 is_accessible = true; 560 return get_klass(klass()); 561} 562 563// ------------------------------------------------------------------ 564// ciEnv::get_klass_by_index 565// 566// Get a klass from the constant pool. 567ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool, 568 int index, 569 bool& is_accessible, 570 ciInstanceKlass* accessor) { 571 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) 572} 573 574// ------------------------------------------------------------------ 575// ciEnv::get_constant_by_index_impl 576// 577// Implementation of get_constant_by_index(). 578ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool, 579 int pool_index, int cache_index, 580 ciInstanceKlass* accessor) { 581 bool ignore_will_link; 582 EXCEPTION_CONTEXT; 583 int index = pool_index; 584 if (cache_index >= 0) { 585 assert(index < 0, "only one kind of index at a time"); 586 oop obj = cpool->resolved_references()->obj_at(cache_index); 587 if (obj != NULL) { 588 ciObject* ciobj = get_object(obj); 589 if (ciobj->is_array()) { 590 return ciConstant(T_ARRAY, ciobj); 591 } else { 592 assert(ciobj->is_instance(), "should be an instance"); 593 return ciConstant(T_OBJECT, ciobj); 594 } 595 } 596 index = cpool->object_to_cp_index(cache_index); 597 } 598 constantTag tag = cpool->tag_at(index); 599 if (tag.is_int()) { 600 return ciConstant(T_INT, (jint)cpool->int_at(index)); 601 } else if (tag.is_long()) { 602 return ciConstant((jlong)cpool->long_at(index)); 603 } else if (tag.is_float()) { 604 return ciConstant((jfloat)cpool->float_at(index)); 605 } else if (tag.is_double()) { 606 return ciConstant((jdouble)cpool->double_at(index)); 607 } else if (tag.is_string()) { 608 oop string = NULL; 609 assert(cache_index >= 0, "should have a cache index"); 610 if (cpool->is_pseudo_string_at(index)) { 611 string = cpool->pseudo_string_at(index, cache_index); 612 } else { 613 string = cpool->string_at(index, cache_index, THREAD); 614 if (HAS_PENDING_EXCEPTION) { 615 CLEAR_PENDING_EXCEPTION; 616 record_out_of_memory_failure(); 617 return ciConstant(); 618 } 619 } 620 ciObject* constant = get_object(string); 621 if (constant->is_array()) { 622 return ciConstant(T_ARRAY, constant); 623 } else { 624 assert (constant->is_instance(), "must be an instance, or not? "); 625 return ciConstant(T_OBJECT, constant); 626 } 627 } else if (tag.is_klass() || tag.is_unresolved_klass()) { 628 // 4881222: allow ldc to take a class type 629 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); 630 if (HAS_PENDING_EXCEPTION) { 631 CLEAR_PENDING_EXCEPTION; 632 record_out_of_memory_failure(); 633 return ciConstant(); 634 } 635 assert (klass->is_instance_klass() || klass->is_array_klass(), 636 "must be an instance or array klass "); 637 return ciConstant(T_OBJECT, klass->java_mirror()); 638 } else if (tag.is_method_type()) { 639 // must execute Java code to link this CP entry into cache[i].f1 640 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); 641 ciObject* ciobj = get_unloaded_method_type_constant(signature); 642 return ciConstant(T_OBJECT, ciobj); 643 } else if (tag.is_method_handle()) { 644 // must execute Java code to link this CP entry into cache[i].f1 645 int ref_kind = cpool->method_handle_ref_kind_at(index); 646 int callee_index = cpool->method_handle_klass_index_at(index); 647 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); 648 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); 649 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); 650 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); 651 return ciConstant(T_OBJECT, ciobj); 652 } else { 653 ShouldNotReachHere(); 654 return ciConstant(); 655 } 656} 657 658// ------------------------------------------------------------------ 659// ciEnv::get_constant_by_index 660// 661// Pull a constant out of the constant pool. How appropriate. 662// 663// Implementation note: this query is currently in no way cached. 664ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool, 665 int pool_index, int cache_index, 666 ciInstanceKlass* accessor) { 667 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) 668} 669 670// ------------------------------------------------------------------ 671// ciEnv::get_field_by_index_impl 672// 673// Implementation of get_field_by_index. 674// 675// Implementation note: the results of field lookups are cached 676// in the accessor klass. 677ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, 678 int index) { 679 ciConstantPoolCache* cache = accessor->field_cache(); 680 if (cache == NULL) { 681 ciField* field = new (arena()) ciField(accessor, index); 682 return field; 683 } else { 684 ciField* field = (ciField*)cache->get(index); 685 if (field == NULL) { 686 field = new (arena()) ciField(accessor, index); 687 cache->insert(index, field); 688 } 689 return field; 690 } 691} 692 693// ------------------------------------------------------------------ 694// ciEnv::get_field_by_index 695// 696// Get a field by index from a klass's constant pool. 697ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, 698 int index) { 699 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) 700} 701 702// ------------------------------------------------------------------ 703// ciEnv::lookup_method 704// 705// Perform an appropriate method lookup based on accessor, holder, 706// name, signature, and bytecode. 707Method* ciEnv::lookup_method(ciInstanceKlass* accessor, 708 ciKlass* holder, 709 Symbol* name, 710 Symbol* sig, 711 Bytecodes::Code bc, 712 constantTag tag) { 713 // Accessibility checks are performed in ciEnv::get_method_by_index_impl. 714 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible"); 715 716 KlassHandle h_accessor(accessor->get_instanceKlass()); 717 KlassHandle h_holder(holder->get_Klass()); 718 methodHandle dest_method; 719 LinkInfo link_info(h_holder, name, sig, h_accessor, LinkInfo::needs_access_check, tag); 720 switch (bc) { 721 case Bytecodes::_invokestatic: 722 dest_method = 723 LinkResolver::resolve_static_call_or_null(link_info); 724 break; 725 case Bytecodes::_invokespecial: 726 dest_method = 727 LinkResolver::resolve_special_call_or_null(link_info); 728 break; 729 case Bytecodes::_invokeinterface: 730 dest_method = 731 LinkResolver::linktime_resolve_interface_method_or_null(link_info); 732 break; 733 case Bytecodes::_invokevirtual: 734 dest_method = 735 LinkResolver::linktime_resolve_virtual_method_or_null(link_info); 736 break; 737 default: ShouldNotReachHere(); 738 } 739 740 return dest_method(); 741} 742 743 744// ------------------------------------------------------------------ 745// ciEnv::get_method_by_index_impl 746ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool, 747 int index, Bytecodes::Code bc, 748 ciInstanceKlass* accessor) { 749 if (bc == Bytecodes::_invokedynamic) { 750 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); 751 bool is_resolved = !cpce->is_f1_null(); 752 // FIXME: code generation could allow for null (unlinked) call site 753 // The call site could be made patchable as follows: 754 // Load the appendix argument from the constant pool. 755 // Test the appendix argument and jump to a known deopt routine if it is null. 756 // Jump through a patchable call site, which is initially a deopt routine. 757 // Patch the call site to the nmethod entry point of the static compiled lambda form. 758 // As with other two-component call sites, both values must be independently verified. 759 760 if (is_resolved) { 761 // Get the invoker Method* from the constant pool. 762 // (The appendix argument, if any, will be noted in the method's signature.) 763 Method* adapter = cpce->f1_as_method(); 764 return get_method(adapter); 765 } 766 767 // Fake a method that is equivalent to a declared method. 768 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); 769 ciSymbol* name = ciSymbol::invokeBasic_name(); 770 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); 771 return get_unloaded_method(holder, name, signature, accessor); 772 } else { 773 const int holder_index = cpool->klass_ref_index_at(index); 774 bool holder_is_accessible; 775 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); 776 777 // Get the method's name and signature. 778 Symbol* name_sym = cpool->name_ref_at(index); 779 Symbol* sig_sym = cpool->signature_ref_at(index); 780 781 if (cpool->has_preresolution() 782 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) && 783 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { 784 // Short-circuit lookups for JSR 292-related call sites. 785 // That is, do not rely only on name-based lookups, because they may fail 786 // if the names are not resolvable in the boot class loader (7056328). 787 switch (bc) { 788 case Bytecodes::_invokevirtual: 789 case Bytecodes::_invokeinterface: 790 case Bytecodes::_invokespecial: 791 case Bytecodes::_invokestatic: 792 { 793 Method* m = ConstantPool::method_at_if_loaded(cpool, index); 794 if (m != NULL) { 795 return get_method(m); 796 } 797 } 798 break; 799 } 800 } 801 802 if (holder_is_accessible) { // Our declared holder is loaded. 803 constantTag tag = cpool->tag_ref_at(index); 804 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?"); 805 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag); 806 if (m != NULL && 807 (bc == Bytecodes::_invokestatic 808 ? m->method_holder()->is_not_initialized() 809 : !m->method_holder()->is_loaded())) { 810 m = NULL; 811 } 812#ifdef ASSERT 813 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { 814 m = NULL; 815 } 816#endif 817 if (m != NULL) { 818 // We found the method. 819 return get_method(m); 820 } 821 } 822 823 // Either the declared holder was not loaded, or the method could 824 // not be found. Create a dummy ciMethod to represent the failed 825 // lookup. 826 ciSymbol* name = get_symbol(name_sym); 827 ciSymbol* signature = get_symbol(sig_sym); 828 return get_unloaded_method(holder, name, signature, accessor); 829 } 830} 831 832 833// ------------------------------------------------------------------ 834// ciEnv::get_instance_klass_for_declared_method_holder 835ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { 836 // For the case of <array>.clone(), the method holder can be a ciArrayKlass 837 // instead of a ciInstanceKlass. For that case simply pretend that the 838 // declared holder is Object.clone since that's where the call will bottom out. 839 // A more correct fix would trickle out through many interfaces in CI, 840 // requiring ciInstanceKlass* to become ciKlass* and many more places would 841 // require checks to make sure the expected type was found. Given that this 842 // only occurs for clone() the more extensive fix seems like overkill so 843 // instead we simply smear the array type into Object. 844 guarantee(method_holder != NULL, "no method holder"); 845 if (method_holder->is_instance_klass()) { 846 return method_holder->as_instance_klass(); 847 } else if (method_holder->is_array_klass()) { 848 return current()->Object_klass(); 849 } else { 850 ShouldNotReachHere(); 851 } 852 return NULL; 853} 854 855 856// ------------------------------------------------------------------ 857// ciEnv::get_method_by_index 858ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool, 859 int index, Bytecodes::Code bc, 860 ciInstanceKlass* accessor) { 861 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) 862} 863 864 865// ------------------------------------------------------------------ 866// ciEnv::name_buffer 867char *ciEnv::name_buffer(int req_len) { 868 if (_name_buffer_len < req_len) { 869 if (_name_buffer == NULL) { 870 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); 871 _name_buffer_len = req_len; 872 } else { 873 _name_buffer = 874 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); 875 _name_buffer_len = req_len; 876 } 877 } 878 return _name_buffer; 879} 880 881// ------------------------------------------------------------------ 882// ciEnv::is_in_vm 883bool ciEnv::is_in_vm() { 884 return JavaThread::current()->thread_state() == _thread_in_vm; 885} 886 887bool ciEnv::system_dictionary_modification_counter_changed() { 888 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); 889} 890 891// ------------------------------------------------------------------ 892// ciEnv::validate_compile_task_dependencies 893// 894// Check for changes during compilation (e.g. class loads, evolution, 895// breakpoints, call site invalidation). 896void ciEnv::validate_compile_task_dependencies(ciMethod* target) { 897 if (failing()) return; // no need for further checks 898 899 // First, check non-klass dependencies as we might return early and 900 // not check klass dependencies if the system dictionary 901 // modification counter hasn't changed (see below). 902 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 903 if (deps.is_klass_type()) continue; // skip klass dependencies 904 Klass* witness = deps.check_dependency(); 905 if (witness != NULL) { 906 if (deps.type() == Dependencies::call_site_target_value) { 907 _inc_decompile_count_on_failure = false; 908 record_failure("call site target change"); 909 } else { 910 record_failure("invalid non-klass dependency"); 911 } 912 return; 913 } 914 } 915 916 // Klass dependencies must be checked when the system dictionary 917 // changes. If logging is enabled all violated dependences will be 918 // recorded in the log. In debug mode check dependencies even if 919 // the system dictionary hasn't changed to verify that no invalid 920 // dependencies were inserted. Any violated dependences in this 921 // case are dumped to the tty. 922 bool counter_changed = system_dictionary_modification_counter_changed(); 923 924 bool verify_deps = trueInDebug; 925 if (!counter_changed && !verify_deps) return; 926 927 int klass_violations = 0; 928 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 929 if (!deps.is_klass_type()) continue; // skip non-klass dependencies 930 Klass* witness = deps.check_dependency(); 931 if (witness != NULL) { 932 klass_violations++; 933 if (!counter_changed) { 934 // Dependence failed but counter didn't change. Log a message 935 // describing what failed and allow the assert at the end to 936 // trigger. 937 deps.print_dependency(witness); 938 } else if (xtty == NULL) { 939 // If we're not logging then a single violation is sufficient, 940 // otherwise we want to log all the dependences which were 941 // violated. 942 break; 943 } 944 } 945 } 946 947 if (klass_violations != 0) { 948#ifdef ASSERT 949 if (!counter_changed && !PrintCompilation) { 950 // Print out the compile task that failed 951 _task->print_tty(); 952 } 953#endif 954 assert(counter_changed, "failed dependencies, but counter didn't change"); 955 record_failure("concurrent class loading"); 956 } 957} 958 959// ------------------------------------------------------------------ 960// ciEnv::register_method 961void ciEnv::register_method(ciMethod* target, 962 int entry_bci, 963 CodeOffsets* offsets, 964 int orig_pc_offset, 965 CodeBuffer* code_buffer, 966 int frame_words, 967 OopMapSet* oop_map_set, 968 ExceptionHandlerTable* handler_table, 969 ImplicitExceptionTable* inc_table, 970 AbstractCompiler* compiler, 971 bool has_unsafe_access, 972 bool has_wide_vectors, 973 RTMState rtm_state) { 974 VM_ENTRY_MARK; 975 nmethod* nm = NULL; 976 { 977 // To prevent compile queue updates. 978 MutexLocker locker(MethodCompileQueue_lock, THREAD); 979 980 // Prevent SystemDictionary::add_to_hierarchy from running 981 // and invalidating our dependencies until we install this method. 982 // No safepoints are allowed. Otherwise, class redefinition can occur in between. 983 MutexLocker ml(Compile_lock); 984 NoSafepointVerifier nsv; 985 986 // Change in Jvmti state may invalidate compilation. 987 if (!failing() && jvmti_state_changed()) { 988 record_failure("Jvmti state change invalidated dependencies"); 989 } 990 991 // Change in DTrace flags may invalidate compilation. 992 if (!failing() && 993 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || 994 (!dtrace_method_probes() && DTraceMethodProbes) || 995 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { 996 record_failure("DTrace flags change invalidated dependencies"); 997 } 998 999 if (!failing()) { 1000 if (log() != NULL) { 1001 // Log the dependencies which this compilation declares. 1002 dependencies()->log_all_dependencies(); 1003 } 1004 1005 // Encode the dependencies now, so we can check them right away. 1006 dependencies()->encode_content_bytes(); 1007 1008 // Check for {class loads, evolution, breakpoints, ...} during compilation 1009 validate_compile_task_dependencies(target); 1010 } 1011 1012 methodHandle method(THREAD, target->get_Method()); 1013 1014#if INCLUDE_RTM_OPT 1015 if (!failing() && (rtm_state != NoRTM) && 1016 (method()->method_data() != NULL) && 1017 (method()->method_data()->rtm_state() != rtm_state)) { 1018 // Preemptive decompile if rtm state was changed. 1019 record_failure("RTM state change invalidated rtm code"); 1020 } 1021#endif 1022 1023 if (failing()) { 1024 // While not a true deoptimization, it is a preemptive decompile. 1025 MethodData* mdo = method()->method_data(); 1026 if (mdo != NULL && _inc_decompile_count_on_failure) { 1027 mdo->inc_decompile_count(); 1028 } 1029 1030 // All buffers in the CodeBuffer are allocated in the CodeCache. 1031 // If the code buffer is created on each compile attempt 1032 // as in C2, then it must be freed. 1033 code_buffer->free_blob(); 1034 return; 1035 } 1036 1037 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); 1038 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); 1039 1040 nm = nmethod::new_nmethod(method, 1041 compile_id(), 1042 entry_bci, 1043 offsets, 1044 orig_pc_offset, 1045 debug_info(), dependencies(), code_buffer, 1046 frame_words, oop_map_set, 1047 handler_table, inc_table, 1048 compiler, task()->comp_level()); 1049 1050 // Free codeBlobs 1051 code_buffer->free_blob(); 1052 1053 if (nm != NULL) { 1054 nm->set_has_unsafe_access(has_unsafe_access); 1055 nm->set_has_wide_vectors(has_wide_vectors); 1056#if INCLUDE_RTM_OPT 1057 nm->set_rtm_state(rtm_state); 1058#endif 1059 1060 // Record successful registration. 1061 // (Put nm into the task handle *before* publishing to the Java heap.) 1062 if (task() != NULL) { 1063 task()->set_code(nm); 1064 } 1065 1066 if (entry_bci == InvocationEntryBci) { 1067 if (TieredCompilation) { 1068 // If there is an old version we're done with it 1069 CompiledMethod* old = method->code(); 1070 if (TraceMethodReplacement && old != NULL) { 1071 ResourceMark rm; 1072 char *method_name = method->name_and_sig_as_C_string(); 1073 tty->print_cr("Replacing method %s", method_name); 1074 } 1075 if (old != NULL) { 1076 old->make_not_used(); 1077 } 1078 } 1079 if (TraceNMethodInstalls) { 1080 ResourceMark rm; 1081 char *method_name = method->name_and_sig_as_C_string(); 1082 ttyLocker ttyl; 1083 tty->print_cr("Installing method (%d) %s ", 1084 task()->comp_level(), 1085 method_name); 1086 } 1087 // Allow the code to be executed 1088 method->set_code(method, nm); 1089 } else { 1090 if (TraceNMethodInstalls) { 1091 ResourceMark rm; 1092 char *method_name = method->name_and_sig_as_C_string(); 1093 ttyLocker ttyl; 1094 tty->print_cr("Installing osr method (%d) %s @ %d", 1095 task()->comp_level(), 1096 method_name, 1097 entry_bci); 1098 } 1099 method->method_holder()->add_osr_nmethod(nm); 1100 } 1101 } 1102 } // safepoints are allowed again 1103 1104 if (nm != NULL) { 1105 // JVMTI -- compiled method notification (must be done outside lock) 1106 nm->post_compiled_method_load_event(); 1107 } else { 1108 // The CodeCache is full. 1109 record_failure("code cache is full"); 1110 } 1111} 1112 1113 1114// ------------------------------------------------------------------ 1115// ciEnv::find_system_klass 1116ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { 1117 VM_ENTRY_MARK; 1118 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); 1119} 1120 1121// ------------------------------------------------------------------ 1122// ciEnv::comp_level 1123int ciEnv::comp_level() { 1124 if (task() == NULL) return CompLevel_highest_tier; 1125 return task()->comp_level(); 1126} 1127 1128// ------------------------------------------------------------------ 1129// ciEnv::compile_id 1130uint ciEnv::compile_id() { 1131 if (task() == NULL) return 0; 1132 return task()->compile_id(); 1133} 1134 1135// ------------------------------------------------------------------ 1136// ciEnv::notice_inlined_method() 1137void ciEnv::notice_inlined_method(ciMethod* method) { 1138 _num_inlined_bytecodes += method->code_size_for_inlining(); 1139} 1140 1141// ------------------------------------------------------------------ 1142// ciEnv::num_inlined_bytecodes() 1143int ciEnv::num_inlined_bytecodes() const { 1144 return _num_inlined_bytecodes; 1145} 1146 1147// ------------------------------------------------------------------ 1148// ciEnv::record_failure() 1149void ciEnv::record_failure(const char* reason) { 1150 if (_failure_reason == NULL) { 1151 // Record the first failure reason. 1152 _failure_reason = reason; 1153 } 1154} 1155 1156void ciEnv::report_failure(const char* reason) { 1157 // Create and fire JFR event 1158 EventCompilationFailure event; 1159 if (event.should_commit()) { 1160 event.set_compileId(compile_id()); 1161 event.set_failureMessage(reason); 1162 event.commit(); 1163 } 1164} 1165 1166// ------------------------------------------------------------------ 1167// ciEnv::record_method_not_compilable() 1168void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { 1169 int new_compilable = 1170 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; 1171 1172 // Only note transitions to a worse state 1173 if (new_compilable > _compilable) { 1174 if (log() != NULL) { 1175 if (all_tiers) { 1176 log()->elem("method_not_compilable"); 1177 } else { 1178 log()->elem("method_not_compilable_at_tier level='%d'", 1179 current()->task()->comp_level()); 1180 } 1181 } 1182 _compilable = new_compilable; 1183 1184 // Reset failure reason; this one is more important. 1185 _failure_reason = NULL; 1186 record_failure(reason); 1187 } 1188} 1189 1190// ------------------------------------------------------------------ 1191// ciEnv::record_out_of_memory_failure() 1192void ciEnv::record_out_of_memory_failure() { 1193 // If memory is low, we stop compiling methods. 1194 record_method_not_compilable("out of memory"); 1195} 1196 1197ciInstance* ciEnv::unloaded_ciinstance() { 1198 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) 1199} 1200 1201// ------------------------------------------------------------------ 1202// ciEnv::dump_replay_data* 1203 1204// Don't change thread state and acquire any locks. 1205// Safe to call from VM error reporter. 1206 1207void ciEnv::dump_compile_data(outputStream* out) { 1208 CompileTask* task = this->task(); 1209 Method* method = task->method(); 1210 int entry_bci = task->osr_bci(); 1211 int comp_level = task->comp_level(); 1212 out->print("compile %s %s %s %d %d", 1213 method->klass_name()->as_quoted_ascii(), 1214 method->name()->as_quoted_ascii(), 1215 method->signature()->as_quoted_ascii(), 1216 entry_bci, comp_level); 1217 if (compiler_data() != NULL) { 1218 if (is_c2_compile(comp_level)) { // C2 or Shark 1219#ifdef COMPILER2 1220 // Dump C2 inlining data. 1221 ((Compile*)compiler_data())->dump_inline_data(out); 1222#endif 1223 } else if (is_c1_compile(comp_level)) { // C1 1224#ifdef COMPILER1 1225 // Dump C1 inlining data. 1226 ((Compilation*)compiler_data())->dump_inline_data(out); 1227#endif 1228 } 1229 } 1230 out->cr(); 1231} 1232 1233void ciEnv::dump_replay_data_unsafe(outputStream* out) { 1234 ResourceMark rm; 1235#if INCLUDE_JVMTI 1236 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); 1237 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); 1238 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); 1239#endif // INCLUDE_JVMTI 1240 1241 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); 1242 out->print_cr("# %d ciObject found", objects->length()); 1243 for (int i = 0; i < objects->length(); i++) { 1244 objects->at(i)->dump_replay_data(out); 1245 } 1246 dump_compile_data(out); 1247 out->flush(); 1248} 1249 1250void ciEnv::dump_replay_data(outputStream* out) { 1251 GUARDED_VM_ENTRY( 1252 MutexLocker ml(Compile_lock); 1253 dump_replay_data_unsafe(out); 1254 ) 1255} 1256 1257void ciEnv::dump_replay_data(int compile_id) { 1258 static char buffer[O_BUFLEN]; 1259 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id); 1260 if (ret > 0) { 1261 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1262 if (fd != -1) { 1263 FILE* replay_data_file = os::open(fd, "w"); 1264 if (replay_data_file != NULL) { 1265 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1266 dump_replay_data(&replay_data_stream); 1267 tty->print_cr("# Compiler replay data is saved as: %s", buffer); 1268 } else { 1269 tty->print_cr("# Can't open file to dump replay data."); 1270 } 1271 } 1272 } 1273} 1274 1275void ciEnv::dump_inline_data(int compile_id) { 1276 static char buffer[O_BUFLEN]; 1277 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id); 1278 if (ret > 0) { 1279 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1280 if (fd != -1) { 1281 FILE* inline_data_file = os::open(fd, "w"); 1282 if (inline_data_file != NULL) { 1283 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); 1284 GUARDED_VM_ENTRY( 1285 MutexLocker ml(Compile_lock); 1286 dump_compile_data(&replay_data_stream); 1287 ) 1288 replay_data_stream.flush(); 1289 tty->print("# Compiler inline data is saved as: "); 1290 tty->print_cr("%s", buffer); 1291 } else { 1292 tty->print_cr("# Can't open file to dump inline data."); 1293 } 1294 } 1295 } 1296} 1297