1 /* 2 * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #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/compilerOracle.hpp" 42 #include "gc_interface/collectedHeap.inline.hpp" 43 #include "interpreter/linkResolver.hpp" 44 #include "memory/allocation.inline.hpp" 45 #include "memory/oopFactory.hpp" 46 #include "memory/universe.inline.hpp" 47 #include "oops/methodData.hpp" 48 #include "oops/objArrayKlass.hpp" 49 #include "oops/oop.inline.hpp" 50 #include "oops/oop.inline2.hpp" 51 #include "prims/jvmtiExport.hpp" 52 #include "runtime/init.hpp" 53 #include "runtime/reflection.hpp" 54 #include "runtime/sharedRuntime.hpp" 55 #include "runtime/thread.inline.hpp" 56 #include "utilities/dtrace.hpp" 57 #include "utilities/macros.hpp" 58 #ifdef COMPILER1 59 #include "c1/c1_Runtime1.hpp" 60 #endif 61 #ifdef COMPILER2 62 #include "opto/runtime.hpp" 63 #endif 64 65 // ciEnv 66 // 67 // This class is the top level broker for requests from the compiler 68 // to the VM. 69 70 ciObject* ciEnv::_null_object_instance; 71 72 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; 73 WK_KLASSES_DO(WK_KLASS_DEFN) 74 #undef WK_KLASS_DEFN 75 76 ciSymbol* ciEnv::_unloaded_cisymbol = NULL; 77 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; 78 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; 79 80 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; 81 jobject ciEnv::_ArrayStoreException_handle = NULL; 82 jobject ciEnv::_ClassCastException_handle = NULL; 83 84 #ifndef PRODUCT 85 static bool firstEnv = true; 86 #endif /* PRODUCT */ 87 88 // ------------------------------------------------------------------ 89 // ciEnv::ciEnv 90 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) 91 : _ciEnv_arena(mtCompiler) { 92 VM_ENTRY_MARK; 93 94 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 95 thread->set_env(this); 96 assert(ciEnv::current() == this, "sanity"); 97 98 _oop_recorder = NULL; 99 _debug_info = NULL; 100 _dependencies = NULL; 101 _failure_reason = NULL; 102 _compilable = MethodCompilable; 103 _break_at_compile = false; 104 _compiler_data = NULL; 105 #ifndef PRODUCT 106 assert(!firstEnv, "not initialized properly"); 107 #endif /* !PRODUCT */ 108 109 _system_dictionary_modification_counter = system_dictionary_modification_counter; 110 _num_inlined_bytecodes = 0; 111 assert(task == NULL || thread->task() == task, "sanity"); 112 _task = task; 113 _log = NULL; 114 115 // Temporary buffer for creating symbols and such. 116 _name_buffer = NULL; 117 _name_buffer_len = 0; 118 119 _arena = &_ciEnv_arena; 120 _factory = new (_arena) ciObjectFactory(_arena, 128); 121 122 // Preload commonly referenced system ciObjects. 123 124 // During VM initialization, these instances have not yet been created. 125 // Assertions ensure that these instances are not accessed before 126 // their initialization. 127 128 assert(Universe::is_fully_initialized(), "should be complete"); 129 130 oop o = Universe::null_ptr_exception_instance(); 131 assert(o != NULL, "should have been initialized"); 132 _NullPointerException_instance = get_object(o)->as_instance(); 133 o = Universe::arithmetic_exception_instance(); 134 assert(o != NULL, "should have been initialized"); 135 _ArithmeticException_instance = get_object(o)->as_instance(); 136 137 _ArrayIndexOutOfBoundsException_instance = NULL; 138 _ArrayStoreException_instance = NULL; 139 _ClassCastException_instance = NULL; 140 _the_null_string = NULL; 141 _the_min_jint_string = NULL; 142 143 _jvmti_can_hotswap_or_post_breakpoint = false; 144 _jvmti_can_access_local_variables = false; 145 _jvmti_can_post_on_exceptions = false; 146 _jvmti_can_pop_frame = false; 147 } 148 149 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) { 150 ASSERT_IN_VM; 151 152 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. 153 CompilerThread* current_thread = CompilerThread::current(); 154 assert(current_thread->env() == NULL, "must be"); 155 current_thread->set_env(this); 156 assert(ciEnv::current() == this, "sanity"); 157 158 _oop_recorder = NULL; 159 _debug_info = NULL; 160 _dependencies = NULL; 161 _failure_reason = NULL; 162 _compilable = MethodCompilable_never; 163 _break_at_compile = false; 164 _compiler_data = NULL; 165 #ifndef PRODUCT 166 assert(firstEnv, "must be first"); 167 firstEnv = false; 168 #endif /* !PRODUCT */ 169 170 _system_dictionary_modification_counter = 0; 171 _num_inlined_bytecodes = 0; 172 _task = NULL; 173 _log = NULL; 174 175 // Temporary buffer for creating symbols and such. 176 _name_buffer = NULL; 177 _name_buffer_len = 0; 178 179 _arena = arena; 180 _factory = new (_arena) ciObjectFactory(_arena, 128); 181 182 // Preload commonly referenced system ciObjects. 183 184 // During VM initialization, these instances have not yet been created. 185 // Assertions ensure that these instances are not accessed before 186 // their initialization. 187 188 assert(Universe::is_fully_initialized(), "must be"); 189 190 _NullPointerException_instance = NULL; 191 _ArithmeticException_instance = NULL; 192 _ArrayIndexOutOfBoundsException_instance = NULL; 193 _ArrayStoreException_instance = NULL; 194 _ClassCastException_instance = NULL; 195 _the_null_string = NULL; 196 _the_min_jint_string = NULL; 197 198 _jvmti_can_hotswap_or_post_breakpoint = false; 199 _jvmti_can_access_local_variables = false; 200 _jvmti_can_post_on_exceptions = false; 201 _jvmti_can_pop_frame = false; 202 } 203 204 ciEnv::~ciEnv() { 205 CompilerThread* current_thread = CompilerThread::current(); 206 _factory->remove_symbols(); 207 // Need safepoint to clear the env on the thread. RedefineClasses might 208 // be reading it. 209 GUARDED_VM_ENTRY(current_thread->set_env(NULL);) 210 } 211 212 // ------------------------------------------------------------------ 213 // Cache Jvmti state 214 void ciEnv::cache_jvmti_state() { 215 VM_ENTRY_MARK; 216 // Get Jvmti capabilities under lock to get consistant values. 217 MutexLocker mu(JvmtiThreadState_lock); 218 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); 219 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); 220 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); 221 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame(); 222 } 223 224 bool ciEnv::should_retain_local_variables() const { 225 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame; 226 } 227 228 bool ciEnv::jvmti_state_changed() const { 229 if (!_jvmti_can_access_local_variables && 230 JvmtiExport::can_access_local_variables()) { 231 return true; 232 } 233 if (!_jvmti_can_hotswap_or_post_breakpoint && 234 JvmtiExport::can_hotswap_or_post_breakpoint()) { 235 return true; 236 } 237 if (!_jvmti_can_post_on_exceptions && 238 JvmtiExport::can_post_on_exceptions()) { 239 return true; 240 } 241 if (!_jvmti_can_pop_frame && 242 JvmtiExport::can_pop_frame()) { 243 return true; 244 } 245 return false; 246 } 247 248 // ------------------------------------------------------------------ 249 // Cache DTrace flags 250 void ciEnv::cache_dtrace_flags() { 251 // Need lock? 252 _dtrace_extended_probes = ExtendedDTraceProbes; 253 if (_dtrace_extended_probes) { 254 _dtrace_monitor_probes = true; 255 _dtrace_method_probes = true; 256 _dtrace_alloc_probes = true; 257 } else { 258 _dtrace_monitor_probes = DTraceMonitorProbes; 259 _dtrace_method_probes = DTraceMethodProbes; 260 _dtrace_alloc_probes = DTraceAllocProbes; 261 } 262 } 263 264 // ------------------------------------------------------------------ 265 // helper for lazy exception creation 266 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) { 267 VM_ENTRY_MARK; 268 if (handle == NULL) { 269 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. 270 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD); 271 jobject objh = NULL; 272 if (!HAS_PENDING_EXCEPTION && k != NULL) { 273 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD); 274 if (!HAS_PENDING_EXCEPTION) 275 objh = JNIHandles::make_global(obj); 276 } 277 if (HAS_PENDING_EXCEPTION) { 278 CLEAR_PENDING_EXCEPTION; 279 } else { 280 handle = objh; 281 } 282 } 283 oop obj = JNIHandles::resolve(handle); 284 return obj == NULL? NULL: get_object(obj)->as_instance(); 285 } 286 287 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { 288 if (_ArrayIndexOutOfBoundsException_instance == NULL) { 289 _ArrayIndexOutOfBoundsException_instance 290 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, 291 vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 292 } 293 return _ArrayIndexOutOfBoundsException_instance; 294 } 295 ciInstance* ciEnv::ArrayStoreException_instance() { 296 if (_ArrayStoreException_instance == NULL) { 297 _ArrayStoreException_instance 298 = get_or_create_exception(_ArrayStoreException_handle, 299 vmSymbols::java_lang_ArrayStoreException()); 300 } 301 return _ArrayStoreException_instance; 302 } 303 ciInstance* ciEnv::ClassCastException_instance() { 304 if (_ClassCastException_instance == NULL) { 305 _ClassCastException_instance 306 = get_or_create_exception(_ClassCastException_handle, 307 vmSymbols::java_lang_ClassCastException()); 308 } 309 return _ClassCastException_instance; 310 } 311 312 ciInstance* ciEnv::the_null_string() { 313 if (_the_null_string == NULL) { 314 VM_ENTRY_MARK; 315 _the_null_string = get_object(Universe::the_null_string())->as_instance(); 316 } 317 return _the_null_string; 318 } 319 320 ciInstance* ciEnv::the_min_jint_string() { 321 if (_the_min_jint_string == NULL) { 322 VM_ENTRY_MARK; 323 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); 324 } 325 return _the_min_jint_string; 326 } 327 328 // ------------------------------------------------------------------ 329 // ciEnv::get_method_from_handle 330 ciMethod* ciEnv::get_method_from_handle(Method* method) { 331 VM_ENTRY_MARK; 332 return get_metadata(method)->as_method(); 333 } 334 335 // ------------------------------------------------------------------ 336 // ciEnv::array_element_offset_in_bytes 337 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { 338 VM_ENTRY_MARK; 339 objArrayOop a = (objArrayOop)a_h->get_oop(); 340 assert(a->is_objArray(), ""); 341 int length = a->length(); 342 oop o = o_h->get_oop(); 343 for (int i = 0; i < length; i++) { 344 if (a->obj_at(i) == o) return i; 345 } 346 return -1; 347 } 348 349 350 // ------------------------------------------------------------------ 351 // ciEnv::check_klass_accessiblity 352 // 353 // Note: the logic of this method should mirror the logic of 354 // ConstantPool::verify_constant_pool_resolve. 355 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, 356 Klass* resolved_klass) { 357 if (accessing_klass == NULL || !accessing_klass->is_loaded()) { 358 return true; 359 } 360 if (accessing_klass->is_obj_array_klass()) { 361 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); 362 } 363 if (!accessing_klass->is_instance_klass()) { 364 return true; 365 } 366 367 if (resolved_klass->oop_is_objArray()) { 368 // Find the element klass, if this is an array. 369 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass(); 370 } 371 if (resolved_klass->oop_is_instance()) { 372 return Reflection::verify_class_access(accessing_klass->get_Klass(), 373 resolved_klass, 374 true); 375 } 376 return true; 377 } 378 379 // ------------------------------------------------------------------ 380 // ciEnv::get_klass_by_name_impl 381 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, 382 constantPoolHandle cpool, 383 ciSymbol* name, 384 bool require_local) { 385 ASSERT_IN_VM; 386 EXCEPTION_CONTEXT; 387 388 // Now we need to check the SystemDictionary 389 Symbol* sym = name->get_symbol(); 390 if (sym->byte_at(0) == 'L' && 391 sym->byte_at(sym->utf8_length()-1) == ';') { 392 // This is a name from a signature. Strip off the trimmings. 393 // Call recursive to keep scope of strippedsym. 394 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1, 395 sym->utf8_length()-2, 396 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); 397 ciSymbol* strippedname = get_symbol(strippedsym); 398 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local); 399 } 400 401 // Check for prior unloaded klass. The SystemDictionary's answers 402 // can vary over time but the compiler needs consistency. 403 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); 404 if (unloaded_klass != NULL) { 405 if (require_local) return NULL; 406 return unloaded_klass; 407 } 408 409 Handle loader(THREAD, (oop)NULL); 410 Handle domain(THREAD, (oop)NULL); 411 if (accessing_klass != NULL) { 412 loader = Handle(THREAD, accessing_klass->loader()); 413 domain = Handle(THREAD, accessing_klass->protection_domain()); 414 } 415 416 // setup up the proper type to return on OOM 417 ciKlass* fail_type; 418 if (sym->byte_at(0) == '[') { 419 fail_type = _unloaded_ciobjarrayklass; 420 } else { 421 fail_type = _unloaded_ciinstance_klass; 422 } 423 KlassHandle found_klass; 424 { 425 ttyUnlocker ttyul; // release tty lock to avoid ordering problems 426 MutexLocker ml(Compile_lock); 427 Klass* kls; 428 if (!require_local) { 429 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, 430 KILL_COMPILE_ON_FATAL_(fail_type)); 431 } else { 432 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, 433 KILL_COMPILE_ON_FATAL_(fail_type)); 434 } 435 found_klass = KlassHandle(THREAD, kls); 436 } 437 438 // If we fail to find an array klass, look again for its element type. 439 // The element type may be available either locally or via constraints. 440 // In either case, if we can find the element type in the system dictionary, 441 // we must build an array type around it. The CI requires array klasses 442 // to be loaded if their element klasses are loaded, except when memory 443 // is exhausted. 444 if (sym->byte_at(0) == '[' && 445 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { 446 // We have an unloaded array. 447 // Build it on the fly if the element class exists. 448 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1, 449 sym->utf8_length()-1, 450 KILL_COMPILE_ON_FATAL_(fail_type)); 451 452 // Get element ciKlass recursively. 453 ciKlass* elem_klass = 454 get_klass_by_name_impl(accessing_klass, 455 cpool, 456 get_symbol(elem_sym), 457 require_local); 458 if (elem_klass != NULL && elem_klass->is_loaded()) { 459 // Now make an array for it 460 return ciObjArrayKlass::make_impl(elem_klass); 461 } 462 } 463 464 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) { 465 // Look inside the constant pool for pre-resolved class entries. 466 for (int i = cpool->length() - 1; i >= 1; i--) { 467 if (cpool->tag_at(i).is_klass()) { 468 Klass* kls = cpool->resolved_klass_at(i); 469 if (kls->name() == sym) { 470 found_klass = KlassHandle(THREAD, kls); 471 break; 472 } 473 } 474 } 475 } 476 477 if (found_klass() != NULL) { 478 // Found it. Build a CI handle. 479 return get_klass(found_klass()); 480 } 481 482 if (require_local) return NULL; 483 484 // Not yet loaded into the VM, or not governed by loader constraints. 485 // Make a CI representative for it. 486 return get_unloaded_klass(accessing_klass, name); 487 } 488 489 // ------------------------------------------------------------------ 490 // ciEnv::get_klass_by_name 491 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, 492 ciSymbol* klass_name, 493 bool require_local) { 494 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, 495 constantPoolHandle(), 496 klass_name, 497 require_local);) 498 } 499 500 // ------------------------------------------------------------------ 501 // ciEnv::get_klass_by_index_impl 502 // 503 // Implementation of get_klass_by_index. 504 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, 505 int index, 506 bool& is_accessible, 507 ciInstanceKlass* accessor) { 508 EXCEPTION_CONTEXT; 509 KlassHandle klass; // = NULL; 510 Symbol* klass_name = NULL; 511 512 if (cpool->tag_at(index).is_symbol()) { 513 klass_name = cpool->symbol_at(index); 514 } else { 515 // Check if it's resolved if it's not a symbol constant pool entry. 516 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index)); 517 // Try to look it up by name. 518 if (klass.is_null()) { 519 klass_name = cpool->klass_name_at(index); 520 } 521 } 522 523 if (klass.is_null()) { 524 // Not found in constant pool. Use the name to do the lookup. 525 ciKlass* k = get_klass_by_name_impl(accessor, 526 cpool, 527 get_symbol(klass_name), 528 false); 529 // Calculate accessibility the hard way. 530 if (!k->is_loaded()) { 531 is_accessible = false; 532 } else if (k->loader() != accessor->loader() && 533 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) { 534 // Loaded only remotely. Not linked yet. 535 is_accessible = false; 536 } else { 537 // Linked locally, and we must also check public/private, etc. 538 is_accessible = check_klass_accessibility(accessor, k->get_Klass()); 539 } 540 return k; 541 } 542 543 // Check for prior unloaded klass. The SystemDictionary's answers 544 // can vary over time but the compiler needs consistency. 545 ciSymbol* name = get_symbol(klass()->name()); 546 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); 547 if (unloaded_klass != NULL) { 548 is_accessible = false; 549 return unloaded_klass; 550 } 551 552 // It is known to be accessible, since it was found in the constant pool. 553 is_accessible = true; 554 return get_klass(klass()); 555 } 556 557 // ------------------------------------------------------------------ 558 // ciEnv::get_klass_by_index 559 // 560 // Get a klass from the constant pool. 561 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, 562 int index, 563 bool& is_accessible, 564 ciInstanceKlass* accessor) { 565 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) 566 } 567 568 // ------------------------------------------------------------------ 569 // ciEnv::get_constant_by_index_impl 570 // 571 // Implementation of get_constant_by_index(). 572 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, 573 int pool_index, int cache_index, 574 ciInstanceKlass* accessor) { 575 bool ignore_will_link; 576 EXCEPTION_CONTEXT; 577 int index = pool_index; 578 if (cache_index >= 0) { 579 assert(index < 0, "only one kind of index at a time"); 580 oop obj = cpool->resolved_references()->obj_at(cache_index); 581 if (obj != NULL) { 582 ciObject* ciobj = get_object(obj); 583 return ciConstant(T_OBJECT, ciobj); 584 } 585 index = cpool->object_to_cp_index(cache_index); 586 } 587 constantTag tag = cpool->tag_at(index); 588 if (tag.is_int()) { 589 return ciConstant(T_INT, (jint)cpool->int_at(index)); 590 } else if (tag.is_long()) { 591 return ciConstant((jlong)cpool->long_at(index)); 592 } else if (tag.is_float()) { 593 return ciConstant((jfloat)cpool->float_at(index)); 594 } else if (tag.is_double()) { 595 return ciConstant((jdouble)cpool->double_at(index)); 596 } else if (tag.is_string()) { 597 oop string = NULL; 598 assert(cache_index >= 0, "should have a cache index"); 599 if (cpool->is_pseudo_string_at(index)) { 600 string = cpool->pseudo_string_at(index, cache_index); 601 } else { 602 string = cpool->string_at(index, cache_index, THREAD); 603 if (HAS_PENDING_EXCEPTION) { 604 CLEAR_PENDING_EXCEPTION; 605 record_out_of_memory_failure(); 606 return ciConstant(); 607 } 608 } 609 ciObject* constant = get_object(string); 610 assert (constant->is_instance(), "must be an instance, or not? "); 611 return ciConstant(T_OBJECT, constant); 612 } else if (tag.is_klass() || tag.is_unresolved_klass()) { 613 // 4881222: allow ldc to take a class type 614 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); 615 if (HAS_PENDING_EXCEPTION) { 616 CLEAR_PENDING_EXCEPTION; 617 record_out_of_memory_failure(); 618 return ciConstant(); 619 } 620 assert (klass->is_instance_klass() || klass->is_array_klass(), 621 "must be an instance or array klass "); 622 return ciConstant(T_OBJECT, klass->java_mirror()); 623 } else if (tag.is_method_type()) { 624 // must execute Java code to link this CP entry into cache[i].f1 625 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index)); 626 ciObject* ciobj = get_unloaded_method_type_constant(signature); 627 return ciConstant(T_OBJECT, ciobj); 628 } else if (tag.is_method_handle()) { 629 // must execute Java code to link this CP entry into cache[i].f1 630 int ref_kind = cpool->method_handle_ref_kind_at(index); 631 int callee_index = cpool->method_handle_klass_index_at(index); 632 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); 633 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index)); 634 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index)); 635 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); 636 return ciConstant(T_OBJECT, ciobj); 637 } else { 638 ShouldNotReachHere(); 639 return ciConstant(); 640 } 641 } 642 643 // ------------------------------------------------------------------ 644 // ciEnv::get_constant_by_index 645 // 646 // Pull a constant out of the constant pool. How appropriate. 647 // 648 // Implementation note: this query is currently in no way cached. 649 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, 650 int pool_index, int cache_index, 651 ciInstanceKlass* accessor) { 652 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) 653 } 654 655 // ------------------------------------------------------------------ 656 // ciEnv::get_field_by_index_impl 657 // 658 // Implementation of get_field_by_index. 659 // 660 // Implementation note: the results of field lookups are cached 661 // in the accessor klass. 662 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, 663 int index) { 664 ciConstantPoolCache* cache = accessor->field_cache(); 665 if (cache == NULL) { 666 ciField* field = new (arena()) ciField(accessor, index); 667 return field; 668 } else { 669 ciField* field = (ciField*)cache->get(index); 670 if (field == NULL) { 671 field = new (arena()) ciField(accessor, index); 672 cache->insert(index, field); 673 } 674 return field; 675 } 676 } 677 678 // ------------------------------------------------------------------ 679 // ciEnv::get_field_by_index 680 // 681 // Get a field by index from a klass's constant pool. 682 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, 683 int index) { 684 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) 685 } 686 687 // ------------------------------------------------------------------ 688 // ciEnv::lookup_method 689 // 690 // Perform an appropriate method lookup based on accessor, holder, 691 // name, signature, and bytecode. 692 Method* ciEnv::lookup_method(InstanceKlass* accessor, 693 InstanceKlass* holder, 694 Symbol* name, 695 Symbol* sig, 696 Bytecodes::Code bc) { 697 EXCEPTION_CONTEXT; 698 KlassHandle h_accessor(THREAD, accessor); 699 KlassHandle h_holder(THREAD, holder); 700 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); 701 methodHandle dest_method; 702 switch (bc) { 703 case Bytecodes::_invokestatic: 704 dest_method = 705 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor); 706 break; 707 case Bytecodes::_invokespecial: 708 dest_method = 709 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor); 710 break; 711 case Bytecodes::_invokeinterface: 712 dest_method = 713 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig, 714 h_accessor, true); 715 break; 716 case Bytecodes::_invokevirtual: 717 dest_method = 718 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig, 719 h_accessor, true); 720 break; 721 default: ShouldNotReachHere(); 722 } 723 724 return dest_method(); 725 } 726 727 728 // ------------------------------------------------------------------ 729 // ciEnv::get_method_by_index_impl 730 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, 731 int index, Bytecodes::Code bc, 732 ciInstanceKlass* accessor) { 733 if (bc == Bytecodes::_invokedynamic) { 734 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index); 735 bool is_resolved = !cpce->is_f1_null(); 736 // FIXME: code generation could allow for null (unlinked) call site 737 // The call site could be made patchable as follows: 738 // Load the appendix argument from the constant pool. 739 // Test the appendix argument and jump to a known deopt routine if it is null. 740 // Jump through a patchable call site, which is initially a deopt routine. 741 // Patch the call site to the nmethod entry point of the static compiled lambda form. 742 // As with other two-component call sites, both values must be independently verified. 743 744 if (is_resolved) { 745 // Get the invoker Method* from the constant pool. 746 // (The appendix argument, if any, will be noted in the method's signature.) 747 Method* adapter = cpce->f1_as_method(); 748 return get_method(adapter); 749 } 750 751 // Fake a method that is equivalent to a declared method. 752 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass()); 753 ciSymbol* name = ciSymbol::invokeBasic_name(); 754 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index)); 755 return get_unloaded_method(holder, name, signature, accessor); 756 } else { 757 const int holder_index = cpool->klass_ref_index_at(index); 758 bool holder_is_accessible; 759 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); 760 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); 761 762 // Get the method's name and signature. 763 Symbol* name_sym = cpool->name_ref_at(index); 764 Symbol* sig_sym = cpool->signature_ref_at(index); 765 766 if (cpool->has_preresolution() 767 || (holder == ciEnv::MethodHandle_klass() && 768 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) { 769 // Short-circuit lookups for JSR 292-related call sites. 770 // That is, do not rely only on name-based lookups, because they may fail 771 // if the names are not resolvable in the boot class loader (7056328). 772 switch (bc) { 773 case Bytecodes::_invokevirtual: 774 case Bytecodes::_invokeinterface: 775 case Bytecodes::_invokespecial: 776 case Bytecodes::_invokestatic: 777 { 778 Method* m = ConstantPool::method_at_if_loaded(cpool, index); 779 if (m != NULL) { 780 return get_method(m); 781 } 782 } 783 break; 784 } 785 } 786 787 if (holder_is_accessible) { // Our declared holder is loaded. 788 InstanceKlass* lookup = declared_holder->get_instanceKlass(); 789 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); 790 if (m != NULL && 791 (bc == Bytecodes::_invokestatic 792 ? m->method_holder()->is_not_initialized() 793 : !m->method_holder()->is_loaded())) { 794 m = NULL; 795 } 796 #ifdef ASSERT 797 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) { 798 m = NULL; 799 } 800 #endif 801 if (m != NULL) { 802 // We found the method. 803 return get_method(m); 804 } 805 } 806 807 // Either the declared holder was not loaded, or the method could 808 // not be found. Create a dummy ciMethod to represent the failed 809 // lookup. 810 ciSymbol* name = get_symbol(name_sym); 811 ciSymbol* signature = get_symbol(sig_sym); 812 return get_unloaded_method(declared_holder, name, signature, accessor); 813 } 814 } 815 816 817 // ------------------------------------------------------------------ 818 // ciEnv::get_instance_klass_for_declared_method_holder 819 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { 820 // For the case of <array>.clone(), the method holder can be a ciArrayKlass 821 // instead of a ciInstanceKlass. For that case simply pretend that the 822 // declared holder is Object.clone since that's where the call will bottom out. 823 // A more correct fix would trickle out through many interfaces in CI, 824 // requiring ciInstanceKlass* to become ciKlass* and many more places would 825 // require checks to make sure the expected type was found. Given that this 826 // only occurs for clone() the more extensive fix seems like overkill so 827 // instead we simply smear the array type into Object. 828 guarantee(method_holder != NULL, "no method holder"); 829 if (method_holder->is_instance_klass()) { 830 return method_holder->as_instance_klass(); 831 } else if (method_holder->is_array_klass()) { 832 return current()->Object_klass(); 833 } else { 834 ShouldNotReachHere(); 835 } 836 return NULL; 837 } 838 839 840 // ------------------------------------------------------------------ 841 // ciEnv::get_method_by_index 842 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, 843 int index, Bytecodes::Code bc, 844 ciInstanceKlass* accessor) { 845 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) 846 } 847 848 849 // ------------------------------------------------------------------ 850 // ciEnv::name_buffer 851 char *ciEnv::name_buffer(int req_len) { 852 if (_name_buffer_len < req_len) { 853 if (_name_buffer == NULL) { 854 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); 855 _name_buffer_len = req_len; 856 } else { 857 _name_buffer = 858 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); 859 _name_buffer_len = req_len; 860 } 861 } 862 return _name_buffer; 863 } 864 865 // ------------------------------------------------------------------ 866 // ciEnv::is_in_vm 867 bool ciEnv::is_in_vm() { 868 return JavaThread::current()->thread_state() == _thread_in_vm; 869 } 870 871 bool ciEnv::system_dictionary_modification_counter_changed() { 872 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); 873 } 874 875 // ------------------------------------------------------------------ 876 // ciEnv::validate_compile_task_dependencies 877 // 878 // Check for changes during compilation (e.g. class loads, evolution, 879 // breakpoints, call site invalidation). 880 void ciEnv::validate_compile_task_dependencies(ciMethod* target) { 881 if (failing()) return; // no need for further checks 882 883 // First, check non-klass dependencies as we might return early and 884 // not check klass dependencies if the system dictionary 885 // modification counter hasn't changed (see below). 886 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 887 if (deps.is_klass_type()) continue; // skip klass dependencies 888 Klass* witness = deps.check_dependency(); 889 if (witness != NULL) { 890 record_failure("invalid non-klass dependency"); 891 return; 892 } 893 } 894 895 // Klass dependencies must be checked when the system dictionary 896 // changes. If logging is enabled all violated dependences will be 897 // recorded in the log. In debug mode check dependencies even if 898 // the system dictionary hasn't changed to verify that no invalid 899 // dependencies were inserted. Any violated dependences in this 900 // case are dumped to the tty. 901 bool counter_changed = system_dictionary_modification_counter_changed(); 902 903 bool verify_deps = trueInDebug; 904 if (!counter_changed && !verify_deps) return; 905 906 int klass_violations = 0; 907 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { 908 if (!deps.is_klass_type()) continue; // skip non-klass dependencies 909 Klass* witness = deps.check_dependency(); 910 if (witness != NULL) { 911 klass_violations++; 912 if (!counter_changed) { 913 // Dependence failed but counter didn't change. Log a message 914 // describing what failed and allow the assert at the end to 915 // trigger. 916 deps.print_dependency(witness); 917 } else if (xtty == NULL) { 918 // If we're not logging then a single violation is sufficient, 919 // otherwise we want to log all the dependences which were 920 // violated. 921 break; 922 } 923 } 924 } 925 926 if (klass_violations != 0) { 927 #ifdef ASSERT 928 if (!counter_changed && !PrintCompilation) { 929 // Print out the compile task that failed 930 _task->print_line(); 931 } 932 #endif 933 assert(counter_changed, "failed dependencies, but counter didn't change"); 934 record_failure("concurrent class loading"); 935 } 936 } 937 938 // ------------------------------------------------------------------ 939 // ciEnv::register_method 940 void ciEnv::register_method(ciMethod* target, 941 int entry_bci, 942 CodeOffsets* offsets, 943 int orig_pc_offset, 944 CodeBuffer* code_buffer, 945 int frame_words, 946 OopMapSet* oop_map_set, 947 ExceptionHandlerTable* handler_table, 948 ImplicitExceptionTable* inc_table, 949 AbstractCompiler* compiler, 950 int comp_level, 951 bool has_unsafe_access, 952 bool has_wide_vectors, 953 RTMState rtm_state) { 954 VM_ENTRY_MARK; 955 nmethod* nm = NULL; 956 { 957 // To prevent compile queue updates. 958 MutexLocker locker(MethodCompileQueue_lock, THREAD); 959 960 // Prevent SystemDictionary::add_to_hierarchy from running 961 // and invalidating our dependencies until we install this method. 962 // No safepoints are allowed. Otherwise, class redefinition can occur in between. 963 MutexLocker ml(Compile_lock); 964 No_Safepoint_Verifier nsv; 965 966 // Change in Jvmti state may invalidate compilation. 967 if (!failing() && jvmti_state_changed()) { 968 record_failure("Jvmti state change invalidated dependencies"); 969 } 970 971 // Change in DTrace flags may invalidate compilation. 972 if (!failing() && 973 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) || 974 (!dtrace_method_probes() && DTraceMethodProbes) || 975 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { 976 record_failure("DTrace flags change invalidated dependencies"); 977 } 978 979 if (!failing()) { 980 if (log() != NULL) { 981 // Log the dependencies which this compilation declares. 982 dependencies()->log_all_dependencies(); 983 } 984 985 // Encode the dependencies now, so we can check them right away. 986 dependencies()->encode_content_bytes(); 987 988 // Check for {class loads, evolution, breakpoints, ...} during compilation 989 validate_compile_task_dependencies(target); 990 } 991 992 methodHandle method(THREAD, target->get_Method()); 993 994 #if INCLUDE_RTM_OPT 995 if (!failing() && (rtm_state != NoRTM) && 996 (method()->method_data() != NULL) && 997 (method()->method_data()->rtm_state() != rtm_state)) { 998 // Preemptive decompile if rtm state was changed. 999 record_failure("RTM state change invalidated rtm code"); 1000 } 1001 #endif 1002 1003 if (failing()) { 1004 // While not a true deoptimization, it is a preemptive decompile. 1005 MethodData* mdo = method()->method_data(); 1006 if (mdo != NULL) { 1007 mdo->inc_decompile_count(); 1008 } 1009 1010 // All buffers in the CodeBuffer are allocated in the CodeCache. 1011 // If the code buffer is created on each compile attempt 1012 // as in C2, then it must be freed. 1013 code_buffer->free_blob(); 1014 return; 1015 } 1016 1017 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); 1018 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); 1019 1020 nm = nmethod::new_nmethod(method, 1021 compile_id(), 1022 entry_bci, 1023 offsets, 1024 orig_pc_offset, 1025 debug_info(), dependencies(), code_buffer, 1026 frame_words, oop_map_set, 1027 handler_table, inc_table, 1028 compiler, comp_level); 1029 // Free codeBlobs 1030 code_buffer->free_blob(); 1031 1032 if (nm != NULL) { 1033 nm->set_has_unsafe_access(has_unsafe_access); 1034 nm->set_has_wide_vectors(has_wide_vectors); 1035 #if INCLUDE_RTM_OPT 1036 nm->set_rtm_state(rtm_state); 1037 #endif 1038 1039 // Record successful registration. 1040 // (Put nm into the task handle *before* publishing to the Java heap.) 1041 if (task() != NULL) { 1042 task()->set_code(nm); 1043 } 1044 1045 if (entry_bci == InvocationEntryBci) { 1046 if (TieredCompilation) { 1047 // If there is an old version we're done with it 1048 nmethod* old = method->code(); 1049 if (TraceMethodReplacement && old != NULL) { 1050 ResourceMark rm; 1051 char *method_name = method->name_and_sig_as_C_string(); 1052 tty->print_cr("Replacing method %s", method_name); 1053 } 1054 if (old != NULL) { 1055 old->make_not_entrant(); 1056 } 1057 } 1058 if (TraceNMethodInstalls) { 1059 ResourceMark rm; 1060 char *method_name = method->name_and_sig_as_C_string(); 1061 ttyLocker ttyl; 1062 tty->print_cr("Installing method (%d) %s ", 1063 comp_level, 1064 method_name); 1065 } 1066 // Allow the code to be executed 1067 method->set_code(method, nm); 1068 } else { 1069 if (TraceNMethodInstalls) { 1070 ResourceMark rm; 1071 char *method_name = method->name_and_sig_as_C_string(); 1072 ttyLocker ttyl; 1073 tty->print_cr("Installing osr method (%d) %s @ %d", 1074 comp_level, 1075 method_name, 1076 entry_bci); 1077 } 1078 method->method_holder()->add_osr_nmethod(nm); 1079 } 1080 } 1081 } // safepoints are allowed again 1082 1083 if (nm != NULL) { 1084 // JVMTI -- compiled method notification (must be done outside lock) 1085 nm->post_compiled_method_load_event(); 1086 } else { 1087 // The CodeCache is full. Print out warning and disable compilation. 1088 record_failure("code cache is full"); 1089 CompileBroker::handle_full_code_cache(CodeCache::get_code_blob_type(comp_level)); 1090 } 1091 } 1092 1093 1094 // ------------------------------------------------------------------ 1095 // ciEnv::find_system_klass 1096 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { 1097 VM_ENTRY_MARK; 1098 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false); 1099 } 1100 1101 // ------------------------------------------------------------------ 1102 // ciEnv::comp_level 1103 int ciEnv::comp_level() { 1104 if (task() == NULL) return CompLevel_highest_tier; 1105 return task()->comp_level(); 1106 } 1107 1108 // ------------------------------------------------------------------ 1109 // ciEnv::compile_id 1110 uint ciEnv::compile_id() { 1111 if (task() == NULL) return 0; 1112 return task()->compile_id(); 1113 } 1114 1115 // ------------------------------------------------------------------ 1116 // ciEnv::notice_inlined_method() 1117 void ciEnv::notice_inlined_method(ciMethod* method) { 1118 _num_inlined_bytecodes += method->code_size_for_inlining(); 1119 } 1120 1121 // ------------------------------------------------------------------ 1122 // ciEnv::num_inlined_bytecodes() 1123 int ciEnv::num_inlined_bytecodes() const { 1124 return _num_inlined_bytecodes; 1125 } 1126 1127 // ------------------------------------------------------------------ 1128 // ciEnv::record_failure() 1129 void ciEnv::record_failure(const char* reason) { 1130 if (_failure_reason == NULL) { 1131 // Record the first failure reason. 1132 _failure_reason = reason; 1133 } 1134 } 1135 1136 // ------------------------------------------------------------------ 1137 // ciEnv::record_method_not_compilable() 1138 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { 1139 int new_compilable = 1140 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; 1141 1142 // Only note transitions to a worse state 1143 if (new_compilable > _compilable) { 1144 if (log() != NULL) { 1145 if (all_tiers) { 1146 log()->elem("method_not_compilable"); 1147 } else { 1148 log()->elem("method_not_compilable_at_tier level='%d'", 1149 current()->task()->comp_level()); 1150 } 1151 } 1152 _compilable = new_compilable; 1153 1154 // Reset failure reason; this one is more important. 1155 _failure_reason = NULL; 1156 record_failure(reason); 1157 } 1158 } 1159 1160 // ------------------------------------------------------------------ 1161 // ciEnv::record_out_of_memory_failure() 1162 void ciEnv::record_out_of_memory_failure() { 1163 // If memory is low, we stop compiling methods. 1164 record_method_not_compilable("out of memory"); 1165 } 1166 1167 ciInstance* ciEnv::unloaded_ciinstance() { 1168 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) 1169 } 1170 1171 // ------------------------------------------------------------------ 1172 // ciEnv::dump_replay_data* 1173 1174 // Don't change thread state and acquire any locks. 1175 // Safe to call from VM error reporter. 1176 1177 void ciEnv::dump_compile_data(outputStream* out) { 1178 CompileTask* task = this->task(); 1179 Method* method = task->method(); 1180 int entry_bci = task->osr_bci(); 1181 int comp_level = task->comp_level(); 1182 out->print("compile %s %s %s %d %d", 1183 method->klass_name()->as_quoted_ascii(), 1184 method->name()->as_quoted_ascii(), 1185 method->signature()->as_quoted_ascii(), 1186 entry_bci, comp_level); 1187 if (compiler_data() != NULL) { 1188 if (is_c2_compile(comp_level)) { // C2 or Shark 1189 #ifdef COMPILER2 1190 // Dump C2 inlining data. 1191 ((Compile*)compiler_data())->dump_inline_data(out); 1192 #endif 1193 } else if (is_c1_compile(comp_level)) { // C1 1194 #ifdef COMPILER1 1195 // Dump C1 inlining data. 1196 ((Compilation*)compiler_data())->dump_inline_data(out); 1197 #endif 1198 } 1199 } 1200 out->cr(); 1201 } 1202 1203 void ciEnv::dump_replay_data_unsafe(outputStream* out) { 1204 ResourceMark rm; 1205 #if INCLUDE_JVMTI 1206 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); 1207 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); 1208 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); 1209 #endif // INCLUDE_JVMTI 1210 1211 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); 1212 out->print_cr("# %d ciObject found", objects->length()); 1213 for (int i = 0; i < objects->length(); i++) { 1214 objects->at(i)->dump_replay_data(out); 1215 } 1216 dump_compile_data(out); 1217 out->flush(); 1218 } 1219 1220 void ciEnv::dump_replay_data(outputStream* out) { 1221 GUARDED_VM_ENTRY( 1222 MutexLocker ml(Compile_lock); 1223 dump_replay_data_unsafe(out); 1224 ) 1225 } 1226 1227 void ciEnv::dump_replay_data(int compile_id) { 1228 static char buffer[O_BUFLEN]; 1229 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id); 1230 if (ret > 0) { 1231 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1232 if (fd != -1) { 1233 FILE* replay_data_file = os::open(fd, "w"); 1234 if (replay_data_file != NULL) { 1235 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1236 dump_replay_data(&replay_data_stream); 1237 tty->print_cr("# Compiler replay data is saved as: %s", buffer); 1238 } else { 1239 tty->print_cr("# Can't open file to dump replay data."); 1240 } 1241 } 1242 } 1243 } 1244 1245 void ciEnv::dump_inline_data(int compile_id) { 1246 static char buffer[O_BUFLEN]; 1247 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id); 1248 if (ret > 0) { 1249 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1250 if (fd != -1) { 1251 FILE* inline_data_file = os::open(fd, "w"); 1252 if (inline_data_file != NULL) { 1253 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); 1254 GUARDED_VM_ENTRY( 1255 MutexLocker ml(Compile_lock); 1256 dump_compile_data(&replay_data_stream); 1257 ) 1258 replay_data_stream.flush(); 1259 tty->print("# Compiler inline data is saved as: "); 1260 tty->print_cr("%s", buffer); 1261 } else { 1262 tty->print_cr("# Can't open file to dump inline data."); 1263 } 1264 } 1265 } 1266 }