1 /* 2 * Copyright (c) 2013, 2022, 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 "jvm.h" 27 #include "ci/ciMethodData.hpp" 28 #include "ci/ciReplay.hpp" 29 #include "ci/ciSymbol.hpp" 30 #include "ci/ciKlass.hpp" 31 #include "ci/ciUtilities.inline.hpp" 32 #include "classfile/javaClasses.hpp" 33 #include "classfile/symbolTable.hpp" 34 #include "classfile/systemDictionary.hpp" 35 #include "compiler/compilationPolicy.hpp" 36 #include "compiler/compileBroker.hpp" 37 #include "interpreter/linkResolver.hpp" 38 #include "memory/allocation.inline.hpp" 39 #include "memory/oopFactory.hpp" 40 #include "memory/resourceArea.hpp" 41 #include "oops/constantPool.hpp" 42 #include "oops/cpCache.inline.hpp" 43 #include "oops/fieldStreams.inline.hpp" 44 #include "oops/klass.inline.hpp" 45 #include "oops/method.inline.hpp" 46 #include "oops/oop.inline.hpp" 47 #include "prims/jvmtiExport.hpp" 48 #include "prims/methodHandles.hpp" 49 #include "runtime/fieldDescriptor.inline.hpp" 50 #include "runtime/globals_extension.hpp" 51 #include "runtime/handles.inline.hpp" 52 #include "runtime/jniHandles.inline.hpp" 53 #include "runtime/java.hpp" 54 #include "utilities/copy.hpp" 55 #include "utilities/macros.hpp" 56 #include "utilities/utf8.hpp" 57 58 #ifndef PRODUCT 59 60 // ciReplay 61 62 typedef struct _ciMethodDataRecord { 63 const char* _klass_name; 64 const char* _method_name; 65 const char* _signature; 66 67 int _state; 68 int _invocation_counter; 69 70 intptr_t* _data; 71 char* _orig_data; 72 Klass** _classes; 73 Method** _methods; 74 int* _classes_offsets; 75 int* _methods_offsets; 76 int _data_length; 77 int _orig_data_length; 78 int _classes_length; 79 int _methods_length; 80 } ciMethodDataRecord; 81 82 typedef struct _ciMethodRecord { 83 const char* _klass_name; 84 const char* _method_name; 85 const char* _signature; 86 87 int _instructions_size; 88 int _interpreter_invocation_count; 89 int _interpreter_throwout_count; 90 int _invocation_counter; 91 int _backedge_counter; 92 } ciMethodRecord; 93 94 typedef struct _ciInstanceKlassRecord { 95 const InstanceKlass* _klass; 96 jobject _java_mirror; // Global handle to java mirror to prevent unloading 97 } ciInstanceKlassRecord; 98 99 typedef struct _ciInlineRecord { 100 const char* _klass_name; 101 const char* _method_name; 102 const char* _signature; 103 104 int _inline_depth; 105 int _inline_bci; 106 bool _inline_late; 107 } ciInlineRecord; 108 109 class CompileReplay; 110 static CompileReplay* replay_state; 111 112 class CompileReplay : public StackObj { 113 private: 114 FILE* _stream; 115 Thread* _thread; 116 Handle _protection_domain; 117 bool _protection_domain_initialized; 118 Handle _loader; 119 int _version; 120 121 GrowableArray<ciMethodRecord*> _ci_method_records; 122 GrowableArray<ciMethodDataRecord*> _ci_method_data_records; 123 GrowableArray<ciInstanceKlassRecord*> _ci_instance_klass_records; 124 125 // Use pointer because we may need to return inline records 126 // without destroying them. 127 GrowableArray<ciInlineRecord*>* _ci_inline_records; 128 129 const char* _error_message; 130 131 char* _bufptr; 132 char* _buffer; 133 int _buffer_length; 134 135 // "compile" data 136 ciKlass* _iklass; 137 Method* _imethod; 138 int _entry_bci; 139 int _comp_level; 140 141 public: 142 CompileReplay(const char* filename, TRAPS) { 143 _thread = THREAD; 144 _loader = Handle(_thread, SystemDictionary::java_system_loader()); 145 _protection_domain = Handle(); 146 _protection_domain_initialized = false; 147 148 _stream = os::fopen(filename, "rt"); 149 if (_stream == NULL) { 150 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename); 151 } 152 153 _ci_inline_records = NULL; 154 _error_message = NULL; 155 156 _buffer_length = 32; 157 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length); 158 _bufptr = _buffer; 159 160 _imethod = NULL; 161 _iklass = NULL; 162 _entry_bci = 0; 163 _comp_level = 0; 164 _version = 0; 165 166 test(); 167 } 168 169 ~CompileReplay() { 170 if (_stream != NULL) fclose(_stream); 171 } 172 173 void test() { 174 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\""); 175 _bufptr = _buffer; 176 assert(parse_int("test") == 1, "what"); 177 assert(parse_int("test") == 2, "what"); 178 assert(strcmp(parse_string(), "foo") == 0, "what"); 179 assert(parse_int("test") == 4, "what"); 180 assert(strcmp(parse_string(), "bar") == 0, "what"); 181 assert(parse_intptr_t("test") == 9, "what"); 182 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what"); 183 } 184 185 bool had_error() { 186 return _error_message != NULL || _thread->has_pending_exception(); 187 } 188 189 bool can_replay() { 190 return !(_stream == NULL || had_error()); 191 } 192 193 void report_error(const char* msg) { 194 _error_message = msg; 195 } 196 197 int parse_int(const char* label) { 198 if (had_error()) { 199 return 0; 200 } 201 202 int v = 0; 203 int read; 204 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) { 205 report_error(label); 206 } else { 207 _bufptr += read; 208 } 209 return v; 210 } 211 212 intptr_t parse_intptr_t(const char* label) { 213 if (had_error()) { 214 return 0; 215 } 216 217 intptr_t v = 0; 218 int read; 219 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) { 220 report_error(label); 221 } else { 222 _bufptr += read; 223 } 224 return v; 225 } 226 227 void skip_ws() { 228 // Skip any leading whitespace 229 while (*_bufptr == ' ' || *_bufptr == '\t') { 230 _bufptr++; 231 } 232 } 233 234 // Ignore the rest of the line 235 void skip_remaining() { 236 _bufptr = &_bufptr[strlen(_bufptr)]; // skip ahead to terminator 237 } 238 239 char* scan_and_terminate(char delim) { 240 char* str = _bufptr; 241 while (*_bufptr != delim && *_bufptr != '\0') { 242 _bufptr++; 243 } 244 if (*_bufptr != '\0') { 245 *_bufptr++ = '\0'; 246 } 247 if (_bufptr == str) { 248 // nothing here 249 return NULL; 250 } 251 return str; 252 } 253 254 char* parse_string() { 255 if (had_error()) return NULL; 256 257 skip_ws(); 258 return scan_and_terminate(' '); 259 } 260 261 char* parse_quoted_string() { 262 if (had_error()) return NULL; 263 264 skip_ws(); 265 266 if (*_bufptr == '"') { 267 _bufptr++; 268 return scan_and_terminate('"'); 269 } else { 270 return scan_and_terminate(' '); 271 } 272 } 273 274 char* parse_escaped_string() { 275 char* result = parse_quoted_string(); 276 if (result != NULL) { 277 unescape_string(result); 278 } 279 return result; 280 } 281 282 // Look for the tag 'tag' followed by an 283 bool parse_tag_and_count(const char* tag, int& length) { 284 const char* t = parse_string(); 285 if (t == NULL) { 286 return false; 287 } 288 289 if (strcmp(tag, t) != 0) { 290 report_error(tag); 291 return false; 292 } 293 length = parse_int("parse_tag_and_count"); 294 return !had_error(); 295 } 296 297 // Parse a sequence of raw data encoded as bytes and return the 298 // resulting data. 299 char* parse_data(const char* tag, int& length) { 300 int read_size = 0; 301 if (!parse_tag_and_count(tag, read_size)) { 302 return NULL; 303 } 304 305 int actual_size = sizeof(MethodData::CompilerCounters); 306 char *result = NEW_RESOURCE_ARRAY(char, actual_size); 307 int i = 0; 308 if (read_size != actual_size) { 309 tty->print_cr("Warning: ciMethodData parsing sees MethodData size %i in file, current is %i", read_size, 310 actual_size); 311 // Replay serializes the entire MethodData, but the data is at the end. 312 // If the MethodData instance size has changed, we can pad or truncate in the beginning 313 int padding = actual_size - read_size; 314 if (padding > 0) { 315 // pad missing data with zeros 316 tty->print_cr("- Padding MethodData"); 317 for (; i < padding; i++) { 318 result[i] = 0; 319 } 320 } else if (padding < 0) { 321 // drop some data 322 tty->print_cr("- Truncating MethodData"); 323 for (int j = 0; j < -padding; j++) { 324 int val = parse_int("data"); 325 // discard val 326 } 327 } 328 } 329 330 assert(i < actual_size, "At least some data must remain to be copied"); 331 for (; i < actual_size; i++) { 332 int val = parse_int("data"); 333 result[i] = val; 334 } 335 length = actual_size; 336 return result; 337 } 338 339 // Parse a standard chunk of data emitted as: 340 // 'tag' <length> # # ... 341 // Where each # is an intptr_t item 342 intptr_t* parse_intptr_data(const char* tag, int& length) { 343 if (!parse_tag_and_count(tag, length)) { 344 return NULL; 345 } 346 347 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length); 348 for (int i = 0; i < length; i++) { 349 skip_ws(); 350 intptr_t val = parse_intptr_t("data"); 351 result[i] = val; 352 } 353 return result; 354 } 355 356 // Parse a possibly quoted version of a symbol into a symbolOop 357 Symbol* parse_symbol() { 358 const char* str = parse_escaped_string(); 359 if (str != NULL) { 360 Symbol* sym = SymbolTable::new_symbol(str); 361 return sym; 362 } 363 return NULL; 364 } 365 366 bool parse_terminator() { 367 char* terminator = parse_string(); 368 if (terminator != NULL && strcmp(terminator, ";") == 0) { 369 return true; 370 } 371 return false; 372 } 373 374 // Parse a special hidden klass location syntax 375 // syntax: @bci <klass> <name> <signature> <bci> <location>* ; 376 // syntax: @cpi <klass> <cpi> <location>* ; 377 Klass* parse_cp_ref(TRAPS) { 378 JavaThread* thread = THREAD; 379 oop obj = NULL; 380 char* ref = parse_string(); 381 if (strcmp(ref, "bci") == 0) { 382 Method* m = parse_method(CHECK_NULL); 383 if (m == NULL) { 384 return NULL; 385 } 386 387 InstanceKlass* ik = m->method_holder(); 388 const constantPoolHandle cp(Thread::current(), ik->constants()); 389 390 // invokedynamic or invokehandle 391 392 methodHandle caller(Thread::current(), m); 393 int bci = parse_int("bci"); 394 if (m->validate_bci(bci) != bci) { 395 report_error("bad bci"); 396 return NULL; 397 } 398 399 ik->link_class(CHECK_NULL); 400 401 Bytecode_invoke bytecode(caller, bci); 402 int index = bytecode.index(); 403 404 ConstantPoolCacheEntry* cp_cache_entry = NULL; 405 CallInfo callInfo; 406 Bytecodes::Code bc = bytecode.invoke_code(); 407 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL); 408 if (bytecode.is_invokedynamic()) { 409 cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index); 410 cp_cache_entry->set_dynamic_call(cp, callInfo); 411 } else if (bytecode.is_invokehandle()) { 412 #ifdef ASSERT 413 Klass* holder = cp->klass_ref_at(index, CHECK_NULL); 414 Symbol* name = cp->name_ref_at(index); 415 assert(MethodHandles::is_signature_polymorphic_name(holder, name), ""); 416 #endif 417 cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index)); 418 cp_cache_entry->set_method_handle(cp, callInfo); 419 } else { 420 report_error("no dynamic invoke found"); 421 return NULL; 422 } 423 char* dyno_ref = parse_string(); 424 if (strcmp(dyno_ref, "<appendix>") == 0) { 425 obj = cp_cache_entry->appendix_if_resolved(cp); 426 } else if (strcmp(dyno_ref, "<adapter>") == 0) { 427 if (!parse_terminator()) { 428 report_error("no dynamic invoke found"); 429 return NULL; 430 } 431 Method* adapter = cp_cache_entry->f1_as_method(); 432 if (adapter == NULL) { 433 report_error("no adapter found"); 434 return NULL; 435 } 436 return adapter->method_holder(); 437 } else if (strcmp(dyno_ref, "<bsm>") == 0) { 438 int pool_index = cp_cache_entry->constant_pool_index(); 439 BootstrapInfo bootstrap_specifier(cp, pool_index, index); 440 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL); 441 } else { 442 report_error("unrecognized token"); 443 return NULL; 444 } 445 } else { 446 // constant pool ref (MethodHandle) 447 if (strcmp(ref, "cpi") != 0) { 448 report_error("unexpected token"); 449 return NULL; 450 } 451 452 Klass* k = parse_klass(CHECK_NULL); 453 if (k == NULL) { 454 return NULL; 455 } 456 InstanceKlass* ik = InstanceKlass::cast(k); 457 const constantPoolHandle cp(Thread::current(), ik->constants()); 458 459 int cpi = parse_int("cpi"); 460 461 if (cpi >= cp->length()) { 462 report_error("bad cpi"); 463 return NULL; 464 } 465 if (!cp->tag_at(cpi).is_method_handle()) { 466 report_error("no method handle found at cpi"); 467 return NULL; 468 } 469 ik->link_class(CHECK_NULL); 470 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL); 471 } 472 if (obj == NULL) { 473 report_error("null cp object found"); 474 return NULL; 475 } 476 Klass* k = NULL; 477 skip_ws(); 478 // loop: read fields 479 char* field = NULL; 480 do { 481 field = parse_string(); 482 if (field == NULL) { 483 report_error("no field found"); 484 return NULL; 485 } 486 if (strcmp(field, ";") == 0) { 487 break; 488 } 489 // raw Method* 490 if (strcmp(field, "<vmtarget>") == 0) { 491 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); 492 k = (vmtarget == NULL) ? NULL : vmtarget->method_holder(); 493 if (k == NULL) { 494 report_error("null vmtarget found"); 495 return NULL; 496 } 497 if (!parse_terminator()) { 498 report_error("missing terminator"); 499 return NULL; 500 } 501 return k; 502 } 503 obj = ciReplay::obj_field(obj, field); 504 // array 505 if (obj != NULL && obj->is_objArray()) { 506 objArrayOop arr = (objArrayOop)obj; 507 int index = parse_int("index"); 508 if (index >= arr->length()) { 509 report_error("bad array index"); 510 return NULL; 511 } 512 obj = arr->obj_at(index); 513 } 514 } while (obj != NULL); 515 if (obj == NULL) { 516 report_error("null field found"); 517 return NULL; 518 } 519 k = obj->klass(); 520 return k; 521 } 522 523 // Parse a valid klass name and look it up 524 // syntax: <name> 525 // syntax: <constant pool ref> 526 Klass* parse_klass(TRAPS) { 527 skip_ws(); 528 // check for constant pool object reference (for a dynamic/hidden class) 529 bool cp_ref = (*_bufptr == '@'); 530 if (cp_ref) { 531 ++_bufptr; 532 Klass* k = parse_cp_ref(CHECK_NULL); 533 if (k != NULL && !k->is_hidden()) { 534 report_error("expected hidden class"); 535 return NULL; 536 } 537 return k; 538 } 539 char* str = parse_escaped_string(); 540 Symbol* klass_name = SymbolTable::new_symbol(str); 541 if (klass_name != NULL) { 542 Klass* k = NULL; 543 if (_iklass != NULL) { 544 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding(); 545 } else { 546 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 547 } 548 if (HAS_PENDING_EXCEPTION) { 549 oop throwable = PENDING_EXCEPTION; 550 java_lang_Throwable::print(throwable, tty); 551 tty->cr(); 552 report_error(str); 553 if (ReplayIgnoreInitErrors) { 554 CLEAR_PENDING_EXCEPTION; 555 _error_message = NULL; 556 } 557 return NULL; 558 } 559 return k; 560 } 561 return NULL; 562 } 563 564 // Lookup a klass 565 Klass* resolve_klass(const char* klass, TRAPS) { 566 Symbol* klass_name = SymbolTable::new_symbol(klass); 567 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 568 } 569 570 // Parse the standard tuple of <klass> <name> <signature> 571 Method* parse_method(TRAPS) { 572 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL); 573 if (k == NULL) { 574 report_error("Can't find holder klass"); 575 return NULL; 576 } 577 Symbol* method_name = parse_symbol(); 578 Symbol* method_signature = parse_symbol(); 579 Method* m = k->find_method(method_name, method_signature); 580 if (m == NULL) { 581 report_error("Can't find method"); 582 } 583 return m; 584 } 585 586 int get_line(int c) { 587 int buffer_pos = 0; 588 while(c != EOF) { 589 if (buffer_pos + 1 >= _buffer_length) { 590 int new_length = _buffer_length * 2; 591 // Next call will throw error in case of OOM. 592 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length); 593 _buffer_length = new_length; 594 } 595 if (c == '\n') { 596 c = getc(_stream); // get next char 597 break; 598 } else if (c == '\r') { 599 // skip LF 600 } else { 601 _buffer[buffer_pos++] = c; 602 } 603 c = getc(_stream); 604 } 605 // null terminate it, reset the pointer 606 _buffer[buffer_pos] = '\0'; // NL or EOF 607 _bufptr = _buffer; 608 return c; 609 } 610 611 // Process each line of the replay file executing each command until 612 // the file ends. 613 void process(TRAPS) { 614 int line_no = 1; 615 int c = getc(_stream); 616 while(c != EOF) { 617 c = get_line(c); 618 process_command(THREAD); 619 if (had_error()) { 620 int pos = _bufptr - _buffer + 1; 621 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message); 622 if (ReplayIgnoreInitErrors) { 623 CLEAR_PENDING_EXCEPTION; 624 _error_message = NULL; 625 } else { 626 return; 627 } 628 } 629 line_no++; 630 } 631 } 632 633 void process_command(TRAPS) { 634 char* cmd = parse_string(); 635 if (cmd == NULL) { 636 return; 637 } 638 if (strcmp("#", cmd) == 0) { 639 // comment line, print or ignore 640 if (Verbose) { 641 tty->print_cr("# %s", _bufptr); 642 } 643 skip_remaining(); 644 } else if (strcmp("version", cmd) == 0) { 645 _version = parse_int("version"); 646 if (_version < 0 || _version > REPLAY_VERSION) { 647 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION); 648 } 649 } else if (strcmp("compile", cmd) == 0) { 650 process_compile(CHECK); 651 } else if (strcmp("ciMethod", cmd) == 0) { 652 process_ciMethod(CHECK); 653 } else if (strcmp("ciMethodData", cmd) == 0) { 654 process_ciMethodData(CHECK); 655 } else if (strcmp("staticfield", cmd) == 0) { 656 process_staticfield(CHECK); 657 } else if (strcmp("ciInstanceKlass", cmd) == 0) { 658 process_ciInstanceKlass(CHECK); 659 } else if (strcmp("instanceKlass", cmd) == 0) { 660 process_instanceKlass(CHECK); 661 #if INCLUDE_JVMTI 662 } else if (strcmp("JvmtiExport", cmd) == 0) { 663 process_JvmtiExport(CHECK); 664 #endif // INCLUDE_JVMTI 665 } else { 666 report_error("unknown command"); 667 } 668 if (!had_error() && *_bufptr != '\0') { 669 report_error("line not properly terminated"); 670 } 671 } 672 673 // validation of comp_level 674 bool is_valid_comp_level(int comp_level) { 675 const int msg_len = 256; 676 char* msg = NULL; 677 if (!is_compile(comp_level)) { 678 msg = NEW_RESOURCE_ARRAY(char, msg_len); 679 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level); 680 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) { 681 msg = NEW_RESOURCE_ARRAY(char, msg_len); 682 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level); 683 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) { 684 msg = NEW_RESOURCE_ARRAY(char, msg_len); 685 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level); 686 } 687 if (msg != NULL) { 688 report_error(msg); 689 return false; 690 } 691 return true; 692 } 693 694 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)* 695 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) { 696 _imethod = m; 697 _iklass = imethod->holder(); 698 _entry_bci = entry_bci; 699 _comp_level = comp_level; 700 int line_no = 1; 701 int c = getc(_stream); 702 while(c != EOF) { 703 c = get_line(c); 704 // Expecting only lines with "compile" command in inline replay file. 705 char* cmd = parse_string(); 706 if (cmd == NULL || strcmp("compile", cmd) != 0) { 707 return NULL; 708 } 709 process_compile(CHECK_NULL); 710 if (had_error()) { 711 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 712 tty->print_cr("%s", _buffer); 713 return NULL; 714 } 715 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) { 716 // Found inlining record for the requested method. 717 return _ci_inline_records; 718 } 719 line_no++; 720 } 721 return NULL; 722 } 723 724 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)* 725 void process_compile(TRAPS) { 726 Method* method = parse_method(CHECK); 727 if (had_error()) return; 728 int entry_bci = parse_int("entry_bci"); 729 const char* comp_level_label = "comp_level"; 730 int comp_level = parse_int(comp_level_label); 731 // old version w/o comp_level 732 if (had_error() && (error_message() == comp_level_label)) { 733 // use highest available tier 734 comp_level = CompilationPolicy::highest_compile_level(); 735 } 736 if (!is_valid_comp_level(comp_level)) { 737 return; 738 } 739 if (_imethod != NULL) { 740 // Replay Inlining 741 if (entry_bci != _entry_bci || comp_level != _comp_level) { 742 return; 743 } 744 const char* iklass_name = _imethod->method_holder()->name()->as_utf8(); 745 const char* imethod_name = _imethod->name()->as_utf8(); 746 const char* isignature = _imethod->signature()->as_utf8(); 747 const char* klass_name = method->method_holder()->name()->as_utf8(); 748 const char* method_name = method->name()->as_utf8(); 749 const char* signature = method->signature()->as_utf8(); 750 if (strcmp(iklass_name, klass_name) != 0 || 751 strcmp(imethod_name, method_name) != 0 || 752 strcmp(isignature, signature) != 0) { 753 return; 754 } 755 } 756 int inline_count = 0; 757 if (parse_tag_and_count("inline", inline_count)) { 758 // Record inlining data 759 _ci_inline_records = new GrowableArray<ciInlineRecord*>(); 760 for (int i = 0; i < inline_count; i++) { 761 int depth = parse_int("inline_depth"); 762 int bci = parse_int("inline_bci"); 763 if (had_error()) { 764 break; 765 } 766 int inline_late = 0; 767 if (_version >= 2) { 768 inline_late = parse_int("inline_late"); 769 if (had_error()) { 770 break; 771 } 772 } 773 774 Method* inl_method = parse_method(CHECK); 775 if (had_error()) { 776 break; 777 } 778 new_ciInlineRecord(inl_method, bci, depth, inline_late); 779 } 780 } 781 if (_imethod != NULL) { 782 return; // Replay Inlining 783 } 784 InstanceKlass* ik = method->method_holder(); 785 ik->initialize(THREAD); 786 if (HAS_PENDING_EXCEPTION) { 787 oop throwable = PENDING_EXCEPTION; 788 java_lang_Throwable::print(throwable, tty); 789 tty->cr(); 790 if (ReplayIgnoreInitErrors) { 791 CLEAR_PENDING_EXCEPTION; 792 ik->set_init_state(InstanceKlass::fully_initialized); 793 } else { 794 return; 795 } 796 } 797 // Make sure the existence of a prior compile doesn't stop this one 798 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code(); 799 if (nm != NULL) { 800 nm->make_not_entrant(); 801 } 802 replay_state = this; 803 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level, 804 methodHandle(), 0, CompileTask::Reason_Replay, THREAD); 805 replay_state = NULL; 806 reset(); 807 } 808 809 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 810 void process_ciMethod(TRAPS) { 811 Method* method = parse_method(CHECK); 812 if (had_error()) return; 813 ciMethodRecord* rec = new_ciMethod(method); 814 rec->_invocation_counter = parse_int("invocation_counter"); 815 rec->_backedge_counter = parse_int("backedge_counter"); 816 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count"); 817 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count"); 818 rec->_instructions_size = parse_int("instructions_size"); 819 } 820 821 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)* 822 void process_ciMethodData(TRAPS) { 823 Method* method = parse_method(CHECK); 824 if (had_error()) return; 825 /* just copied from Method, to build interpret data*/ 826 827 // To be properly initialized, some profiling in the MDO needs the 828 // method to be rewritten (number of arguments at a call for 829 // instance) 830 method->method_holder()->link_class(CHECK); 831 // Method::build_interpreter_method_data(method, CHECK); 832 { 833 // Grab a lock here to prevent multiple 834 // MethodData*s from being created. 835 MutexLocker ml(THREAD, MethodData_lock); 836 if (method->method_data() == NULL) { 837 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 838 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK); 839 method->set_method_data(method_data); 840 } 841 } 842 843 // collect and record all the needed information for later 844 ciMethodDataRecord* rec = new_ciMethodData(method); 845 rec->_state = parse_int("state"); 846 if (_version < 1) { 847 parse_int("current_mileage"); 848 } else { 849 rec->_invocation_counter = parse_int("invocation_counter"); 850 } 851 852 rec->_orig_data = parse_data("orig", rec->_orig_data_length); 853 if (rec->_orig_data == NULL) { 854 return; 855 } 856 rec->_data = parse_intptr_data("data", rec->_data_length); 857 if (rec->_data == NULL) { 858 return; 859 } 860 if (!parse_tag_and_count("oops", rec->_classes_length)) { 861 return; 862 } 863 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length); 864 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length); 865 for (int i = 0; i < rec->_classes_length; i++) { 866 int offset = parse_int("offset"); 867 if (had_error()) { 868 return; 869 } 870 Klass* k = parse_klass(CHECK); 871 rec->_classes_offsets[i] = offset; 872 rec->_classes[i] = k; 873 } 874 875 if (!parse_tag_and_count("methods", rec->_methods_length)) { 876 return; 877 } 878 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length); 879 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length); 880 for (int i = 0; i < rec->_methods_length; i++) { 881 int offset = parse_int("offset"); 882 if (had_error()) { 883 return; 884 } 885 Method* m = parse_method(CHECK); 886 rec->_methods_offsets[i] = offset; 887 rec->_methods[i] = m; 888 } 889 } 890 891 // instanceKlass <name> 892 // instanceKlass <constant pool ref> # <original hidden class name> 893 // 894 // Loads and initializes the klass 'name'. This can be used to 895 // create particular class loading environments 896 void process_instanceKlass(TRAPS) { 897 // just load the referenced class 898 Klass* k = parse_klass(CHECK); 899 900 if (_version >= 1) { 901 if (!_protection_domain_initialized && k != NULL) { 902 assert(_protection_domain() == NULL, "must be uninitialized"); 903 // The first entry is the holder class of the method for which a replay compilation is requested. 904 // Use the same protection domain to load all subsequent classes in order to resolve all classes 905 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file. 906 _protection_domain = Handle(_thread, k->protection_domain()); 907 } 908 909 _protection_domain_initialized = true; 910 } 911 912 if (k == NULL) { 913 return; 914 } 915 const char* comment = parse_string(); 916 bool is_comment = comment != NULL && strcmp(comment, "#") == 0; 917 if (k->is_hidden() != is_comment) { 918 report_error("hidden class with comment expected"); 919 return; 920 } 921 // comment, print or ignore 922 if (is_comment) { 923 if (Verbose) { 924 const char* hidden = parse_string(); 925 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden); 926 } 927 skip_remaining(); 928 } 929 } 930 931 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag* 932 // 933 // Load the klass 'name' and link or initialize it. Verify that the 934 // constant pool is the same length as 'length' and make sure the 935 // constant pool tags are in the same state. 936 void process_ciInstanceKlass(TRAPS) { 937 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK); 938 if (k == NULL) { 939 skip_remaining(); 940 return; 941 } 942 int is_linked = parse_int("is_linked"); 943 int is_initialized = parse_int("is_initialized"); 944 int length = parse_int("length"); 945 if (is_initialized) { 946 k->initialize(THREAD); 947 if (HAS_PENDING_EXCEPTION) { 948 oop throwable = PENDING_EXCEPTION; 949 java_lang_Throwable::print(throwable, tty); 950 tty->cr(); 951 if (ReplayIgnoreInitErrors) { 952 CLEAR_PENDING_EXCEPTION; 953 k->set_init_state(InstanceKlass::fully_initialized); 954 } else { 955 return; 956 } 957 } 958 } else if (is_linked) { 959 k->link_class(CHECK); 960 } 961 new_ciInstanceKlass(k); 962 ConstantPool* cp = k->constants(); 963 if (length != cp->length()) { 964 report_error("constant pool length mismatch: wrong class files?"); 965 return; 966 } 967 968 int parsed_two_word = 0; 969 for (int i = 1; i < length; i++) { 970 int tag = parse_int("tag"); 971 if (had_error()) { 972 return; 973 } 974 switch (cp->tag_at(i).value()) { 975 case JVM_CONSTANT_UnresolvedClass: { 976 if (tag == JVM_CONSTANT_Class) { 977 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i); 978 Klass* k = cp->klass_at(i, CHECK); 979 } 980 break; 981 } 982 case JVM_CONSTANT_Long: 983 case JVM_CONSTANT_Double: 984 parsed_two_word = i + 1; 985 986 case JVM_CONSTANT_ClassIndex: 987 case JVM_CONSTANT_StringIndex: 988 case JVM_CONSTANT_String: 989 case JVM_CONSTANT_UnresolvedClassInError: 990 case JVM_CONSTANT_Fieldref: 991 case JVM_CONSTANT_Methodref: 992 case JVM_CONSTANT_InterfaceMethodref: 993 case JVM_CONSTANT_NameAndType: 994 case JVM_CONSTANT_Utf8: 995 case JVM_CONSTANT_Integer: 996 case JVM_CONSTANT_Float: 997 case JVM_CONSTANT_MethodHandle: 998 case JVM_CONSTANT_MethodType: 999 case JVM_CONSTANT_Dynamic: 1000 case JVM_CONSTANT_InvokeDynamic: 1001 if (tag != cp->tag_at(i).value()) { 1002 report_error("tag mismatch: wrong class files?"); 1003 return; 1004 } 1005 break; 1006 1007 case JVM_CONSTANT_Class: 1008 if (tag == JVM_CONSTANT_UnresolvedClass) { 1009 Klass* k = cp->klass_at(i, CHECK); 1010 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8()); 1011 } else if (tag != JVM_CONSTANT_Class) { 1012 report_error("Unexpected tag"); 1013 return; 1014 } 1015 break; 1016 1017 case 0: 1018 if (parsed_two_word == i) continue; 1019 1020 default: 1021 fatal("Unexpected tag: %d", cp->tag_at(i).value()); 1022 break; 1023 } 1024 1025 } 1026 } 1027 1028 // staticfield <klass> <name> <signature> <value> 1029 // 1030 // Initialize a class and fill in the value for a static field. 1031 // This is useful when the compile was dependent on the value of 1032 // static fields but it's impossible to properly rerun the static 1033 // initializer. 1034 void process_staticfield(TRAPS) { 1035 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 1036 1037 if (k == NULL || ReplaySuppressInitializers == 0 || 1038 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) { 1039 skip_remaining(); 1040 return; 1041 } 1042 1043 assert(k->is_initialized(), "must be"); 1044 1045 const char* field_name = parse_escaped_string(); 1046 const char* field_signature = parse_string(); 1047 fieldDescriptor fd; 1048 Symbol* name = SymbolTable::new_symbol(field_name); 1049 Symbol* sig = SymbolTable::new_symbol(field_signature); 1050 if (!k->find_local_field(name, sig, &fd) || 1051 !fd.is_static() || 1052 fd.has_initial_value()) { 1053 report_error(field_name); 1054 return; 1055 } 1056 1057 oop java_mirror = k->java_mirror(); 1058 if (field_signature[0] == JVM_SIGNATURE_ARRAY) { 1059 int length = parse_int("array length"); 1060 oop value = NULL; 1061 1062 if (field_signature[1] == JVM_SIGNATURE_ARRAY) { 1063 // multi dimensional array 1064 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 1065 if (kelem == NULL) { 1066 return; 1067 } 1068 int rank = 0; 1069 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) { 1070 rank++; 1071 } 1072 jint* dims = NEW_RESOURCE_ARRAY(jint, rank); 1073 dims[0] = length; 1074 for (int i = 1; i < rank; i++) { 1075 dims[i] = 1; // These aren't relevant to the compiler 1076 } 1077 value = kelem->multi_allocate(rank, dims, CHECK); 1078 } else { 1079 if (strcmp(field_signature, "[B") == 0) { 1080 value = oopFactory::new_byteArray(length, CHECK); 1081 } else if (strcmp(field_signature, "[Z") == 0) { 1082 value = oopFactory::new_boolArray(length, CHECK); 1083 } else if (strcmp(field_signature, "[C") == 0) { 1084 value = oopFactory::new_charArray(length, CHECK); 1085 } else if (strcmp(field_signature, "[S") == 0) { 1086 value = oopFactory::new_shortArray(length, CHECK); 1087 } else if (strcmp(field_signature, "[F") == 0) { 1088 value = oopFactory::new_floatArray(length, CHECK); 1089 } else if (strcmp(field_signature, "[D") == 0) { 1090 value = oopFactory::new_doubleArray(length, CHECK); 1091 } else if (strcmp(field_signature, "[I") == 0) { 1092 value = oopFactory::new_intArray(length, CHECK); 1093 } else if (strcmp(field_signature, "[J") == 0) { 1094 value = oopFactory::new_longArray(length, CHECK); 1095 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY && 1096 field_signature[1] == JVM_SIGNATURE_CLASS) { 1097 Klass* kelem = resolve_klass(field_signature + 1, CHECK); 1098 value = oopFactory::new_objArray(kelem, length, CHECK); 1099 } else { 1100 report_error("unhandled array staticfield"); 1101 } 1102 } 1103 java_mirror->obj_field_put(fd.offset(), value); 1104 } else { 1105 const char* string_value = parse_escaped_string(); 1106 if (strcmp(field_signature, "I") == 0) { 1107 int value = atoi(string_value); 1108 java_mirror->int_field_put(fd.offset(), value); 1109 } else if (strcmp(field_signature, "B") == 0) { 1110 int value = atoi(string_value); 1111 java_mirror->byte_field_put(fd.offset(), value); 1112 } else if (strcmp(field_signature, "C") == 0) { 1113 int value = atoi(string_value); 1114 java_mirror->char_field_put(fd.offset(), value); 1115 } else if (strcmp(field_signature, "S") == 0) { 1116 int value = atoi(string_value); 1117 java_mirror->short_field_put(fd.offset(), value); 1118 } else if (strcmp(field_signature, "Z") == 0) { 1119 int value = atoi(string_value); 1120 java_mirror->bool_field_put(fd.offset(), value); 1121 } else if (strcmp(field_signature, "J") == 0) { 1122 jlong value; 1123 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) { 1124 fprintf(stderr, "Error parsing long: %s\n", string_value); 1125 return; 1126 } 1127 java_mirror->long_field_put(fd.offset(), value); 1128 } else if (strcmp(field_signature, "F") == 0) { 1129 float value = atof(string_value); 1130 java_mirror->float_field_put(fd.offset(), value); 1131 } else if (strcmp(field_signature, "D") == 0) { 1132 double value = atof(string_value); 1133 java_mirror->double_field_put(fd.offset(), value); 1134 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 1135 Handle value = java_lang_String::create_from_str(string_value, CHECK); 1136 java_mirror->obj_field_put(fd.offset(), value()); 1137 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) { 1138 Klass* k = resolve_klass(string_value, CHECK); 1139 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK); 1140 java_mirror->obj_field_put(fd.offset(), value); 1141 } else { 1142 report_error("unhandled staticfield"); 1143 } 1144 } 1145 } 1146 1147 #if INCLUDE_JVMTI 1148 // JvmtiExport <field> <value> 1149 void process_JvmtiExport(TRAPS) { 1150 const char* field = parse_string(); 1151 bool value = parse_int("JvmtiExport flag") != 0; 1152 if (strcmp(field, "can_access_local_variables") == 0) { 1153 JvmtiExport::set_can_access_local_variables(value); 1154 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 1155 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 1156 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 1157 JvmtiExport::set_can_post_on_exceptions(value); 1158 } else { 1159 report_error("Unrecognized JvmtiExport directive"); 1160 } 1161 } 1162 #endif // INCLUDE_JVMTI 1163 1164 // Create and initialize a record for a ciMethod 1165 ciMethodRecord* new_ciMethod(Method* method) { 1166 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 1167 rec->_klass_name = method->method_holder()->name()->as_utf8(); 1168 rec->_method_name = method->name()->as_utf8(); 1169 rec->_signature = method->signature()->as_utf8(); 1170 _ci_method_records.append(rec); 1171 return rec; 1172 } 1173 1174 // Lookup data for a ciMethod 1175 ciMethodRecord* find_ciMethodRecord(Method* method) { 1176 const char* klass_name = method->method_holder()->name()->as_utf8(); 1177 const char* method_name = method->name()->as_utf8(); 1178 const char* signature = method->signature()->as_utf8(); 1179 for (int i = 0; i < _ci_method_records.length(); i++) { 1180 ciMethodRecord* rec = _ci_method_records.at(i); 1181 if (strcmp(rec->_klass_name, klass_name) == 0 && 1182 strcmp(rec->_method_name, method_name) == 0 && 1183 strcmp(rec->_signature, signature) == 0) { 1184 return rec; 1185 } 1186 } 1187 return NULL; 1188 } 1189 1190 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time. 1191 void new_ciInstanceKlass(const InstanceKlass* klass) { 1192 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord); 1193 rec->_klass = klass; 1194 oop java_mirror = klass->java_mirror(); 1195 Handle h_java_mirror(_thread, java_mirror); 1196 rec->_java_mirror = JNIHandles::make_global(h_java_mirror); 1197 _ci_instance_klass_records.append(rec); 1198 } 1199 1200 // Check if a ciInstanceKlass was present at replay dump time for a klass. 1201 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) { 1202 for (int i = 0; i < _ci_instance_klass_records.length(); i++) { 1203 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i); 1204 if (klass == rec->_klass) { 1205 // ciInstanceKlass for this klass was resolved. 1206 return rec; 1207 } 1208 } 1209 return NULL; 1210 } 1211 1212 // Create and initialize a record for a ciMethodData 1213 ciMethodDataRecord* new_ciMethodData(Method* method) { 1214 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 1215 rec->_klass_name = method->method_holder()->name()->as_utf8(); 1216 rec->_method_name = method->name()->as_utf8(); 1217 rec->_signature = method->signature()->as_utf8(); 1218 _ci_method_data_records.append(rec); 1219 return rec; 1220 } 1221 1222 // Lookup data for a ciMethodData 1223 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 1224 const char* klass_name = method->method_holder()->name()->as_utf8(); 1225 const char* method_name = method->name()->as_utf8(); 1226 const char* signature = method->signature()->as_utf8(); 1227 for (int i = 0; i < _ci_method_data_records.length(); i++) { 1228 ciMethodDataRecord* rec = _ci_method_data_records.at(i); 1229 if (strcmp(rec->_klass_name, klass_name) == 0 && 1230 strcmp(rec->_method_name, method_name) == 0 && 1231 strcmp(rec->_signature, signature) == 0) { 1232 return rec; 1233 } 1234 } 1235 return NULL; 1236 } 1237 1238 // Create and initialize a record for a ciInlineRecord 1239 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) { 1240 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord); 1241 rec->_klass_name = method->method_holder()->name()->as_utf8(); 1242 rec->_method_name = method->name()->as_utf8(); 1243 rec->_signature = method->signature()->as_utf8(); 1244 rec->_inline_bci = bci; 1245 rec->_inline_depth = depth; 1246 rec->_inline_late = inline_late; 1247 _ci_inline_records->append(rec); 1248 return rec; 1249 } 1250 1251 // Lookup inlining data for a ciMethod 1252 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) { 1253 if (_ci_inline_records != NULL) { 1254 return find_ciInlineRecord(_ci_inline_records, method, bci, depth); 1255 } 1256 return NULL; 1257 } 1258 1259 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records, 1260 Method* method, int bci, int depth) { 1261 if (records != NULL) { 1262 const char* klass_name = method->method_holder()->name()->as_utf8(); 1263 const char* method_name = method->name()->as_utf8(); 1264 const char* signature = method->signature()->as_utf8(); 1265 for (int i = 0; i < records->length(); i++) { 1266 ciInlineRecord* rec = records->at(i); 1267 if ((rec->_inline_bci == bci) && 1268 (rec->_inline_depth == depth) && 1269 (strcmp(rec->_klass_name, klass_name) == 0) && 1270 (strcmp(rec->_method_name, method_name) == 0) && 1271 (strcmp(rec->_signature, signature) == 0)) { 1272 return rec; 1273 } 1274 } 1275 } 1276 return NULL; 1277 } 1278 1279 const char* error_message() { 1280 return _error_message; 1281 } 1282 1283 void reset() { 1284 _error_message = NULL; 1285 _ci_method_records.clear(); 1286 _ci_method_data_records.clear(); 1287 } 1288 1289 // Take an ascii string contain \u#### escapes and convert it to utf8 1290 // in place. 1291 static void unescape_string(char* value) { 1292 char* from = value; 1293 char* to = value; 1294 while (*from != '\0') { 1295 if (*from != '\\') { 1296 *from++ = *to++; 1297 } else { 1298 switch (from[1]) { 1299 case 'u': { 1300 from += 2; 1301 jchar value=0; 1302 for (int i=0; i<4; i++) { 1303 char c = *from++; 1304 switch (c) { 1305 case '0': case '1': case '2': case '3': case '4': 1306 case '5': case '6': case '7': case '8': case '9': 1307 value = (value << 4) + c - '0'; 1308 break; 1309 case 'a': case 'b': case 'c': 1310 case 'd': case 'e': case 'f': 1311 value = (value << 4) + 10 + c - 'a'; 1312 break; 1313 case 'A': case 'B': case 'C': 1314 case 'D': case 'E': case 'F': 1315 value = (value << 4) + 10 + c - 'A'; 1316 break; 1317 default: 1318 ShouldNotReachHere(); 1319 } 1320 } 1321 UNICODE::convert_to_utf8(&value, 1, to); 1322 to++; 1323 break; 1324 } 1325 case 't': *to++ = '\t'; from += 2; break; 1326 case 'n': *to++ = '\n'; from += 2; break; 1327 case 'r': *to++ = '\r'; from += 2; break; 1328 case 'f': *to++ = '\f'; from += 2; break; 1329 default: 1330 ShouldNotReachHere(); 1331 } 1332 } 1333 } 1334 *from = *to; 1335 } 1336 }; 1337 1338 void ciReplay::replay(TRAPS) { 1339 int exit_code = replay_impl(THREAD); 1340 1341 Threads::destroy_vm(); 1342 1343 vm_exit(exit_code); 1344 } 1345 1346 bool ciReplay::no_replay_state() { 1347 return replay_state == NULL; 1348 } 1349 1350 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) { 1351 if (FLAG_IS_DEFAULT(InlineDataFile)) { 1352 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt)."); 1353 return NULL; 1354 } 1355 1356 VM_ENTRY_MARK; 1357 // Load and parse the replay data 1358 CompileReplay rp(InlineDataFile, THREAD); 1359 if (!rp.can_replay()) { 1360 tty->print_cr("ciReplay: !rp.can_replay()"); 1361 return NULL; 1362 } 1363 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD); 1364 if (HAS_PENDING_EXCEPTION) { 1365 Handle throwable(THREAD, PENDING_EXCEPTION); 1366 CLEAR_PENDING_EXCEPTION; 1367 java_lang_Throwable::print_stack_trace(throwable, tty); 1368 tty->cr(); 1369 return NULL; 1370 } 1371 1372 if (rp.had_error()) { 1373 tty->print_cr("ciReplay: Failed on %s", rp.error_message()); 1374 return NULL; 1375 } 1376 return data; 1377 } 1378 1379 int ciReplay::replay_impl(TRAPS) { 1380 HandleMark hm(THREAD); 1381 ResourceMark rm(THREAD); 1382 1383 if (ReplaySuppressInitializers > 2) { 1384 // ReplaySuppressInitializers > 2 means that we want to allow 1385 // normal VM bootstrap but once we get into the replay itself 1386 // don't allow any intializers to be run. 1387 ReplaySuppressInitializers = 1; 1388 } 1389 1390 if (FLAG_IS_DEFAULT(ReplayDataFile)) { 1391 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt)."); 1392 return 1; 1393 } 1394 1395 // Load and parse the replay data 1396 CompileReplay rp(ReplayDataFile, THREAD); 1397 int exit_code = 0; 1398 if (rp.can_replay()) { 1399 rp.process(THREAD); 1400 } else { 1401 exit_code = 1; 1402 return exit_code; 1403 } 1404 1405 if (HAS_PENDING_EXCEPTION) { 1406 Handle throwable(THREAD, PENDING_EXCEPTION); 1407 CLEAR_PENDING_EXCEPTION; 1408 java_lang_Throwable::print_stack_trace(throwable, tty); 1409 tty->cr(); 1410 exit_code = 2; 1411 } 1412 1413 if (rp.had_error()) { 1414 tty->print_cr("Failed on %s", rp.error_message()); 1415 exit_code = 1; 1416 } 1417 return exit_code; 1418 } 1419 1420 void ciReplay::initialize(ciMethodData* m) { 1421 if (no_replay_state()) { 1422 return; 1423 } 1424 1425 ASSERT_IN_VM; 1426 ResourceMark rm; 1427 1428 Method* method = m->get_MethodData()->method(); 1429 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 1430 if (rec == NULL) { 1431 // This indicates some mismatch with the original environment and 1432 // the replay environment though it's not always enough to 1433 // interfere with reproducing a bug 1434 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 1435 method->print_name(tty); 1436 tty->cr(); 1437 } else { 1438 m->_state = rec->_state; 1439 m->_invocation_counter = rec->_invocation_counter; 1440 if (rec->_data_length != 0) { 1441 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) || 1442 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree"); 1443 1444 // Write the correct ciObjects back into the profile data 1445 ciEnv* env = ciEnv::current(); 1446 for (int i = 0; i < rec->_classes_length; i++) { 1447 Klass *k = rec->_classes[i]; 1448 // In case this class pointer is is tagged, preserve the tag bits 1449 intptr_t status = 0; 1450 if (k != NULL) { 1451 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]); 1452 } 1453 rec->_data[rec->_classes_offsets[i]] = status; 1454 } 1455 for (int i = 0; i < rec->_methods_length; i++) { 1456 Method *m = rec->_methods[i]; 1457 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) = 1458 env->get_metadata(m); 1459 } 1460 // Copy the updated profile data into place as intptr_ts 1461 #ifdef _LP64 1462 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length); 1463 #else 1464 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length); 1465 #endif 1466 } 1467 1468 // copy in the original header 1469 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length); 1470 } 1471 } 1472 1473 1474 bool ciReplay::should_not_inline(ciMethod* method) { 1475 if (no_replay_state()) { 1476 return false; 1477 } 1478 VM_ENTRY_MARK; 1479 // ciMethod without a record shouldn't be inlined. 1480 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 1481 } 1482 1483 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) { 1484 if (data != NULL) { 1485 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1486 VM_ENTRY_MARK; 1487 // Inline record are ordered by bci and depth. 1488 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth); 1489 if (record == NULL) { 1490 return false; 1491 } 1492 should_delay = record->_inline_late; 1493 return true; 1494 } else if (replay_state != NULL) { 1495 VM_ENTRY_MARK; 1496 // Inline record are ordered by bci and depth. 1497 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth); 1498 if (record == NULL) { 1499 return false; 1500 } 1501 should_delay = record->_inline_late; 1502 return true; 1503 } 1504 return false; 1505 } 1506 1507 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) { 1508 if (data != NULL) { 1509 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1510 VM_ENTRY_MARK; 1511 // Inline record are ordered by bci and depth. 1512 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL; 1513 } else if (replay_state != NULL) { 1514 VM_ENTRY_MARK; 1515 // Inline record are ordered by bci and depth. 1516 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL; 1517 } 1518 return false; 1519 } 1520 1521 void ciReplay::initialize(ciMethod* m) { 1522 if (no_replay_state()) { 1523 return; 1524 } 1525 1526 ASSERT_IN_VM; 1527 ResourceMark rm; 1528 1529 Method* method = m->get_Method(); 1530 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1531 if (rec == NULL) { 1532 // This indicates some mismatch with the original environment and 1533 // the replay environment though it's not always enough to 1534 // interfere with reproducing a bug 1535 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 1536 method->print_name(tty); 1537 tty->cr(); 1538 } else { 1539 EXCEPTION_CONTEXT; 1540 // m->_instructions_size = rec->_instructions_size; 1541 m->_instructions_size = -1; 1542 m->_interpreter_invocation_count = rec->_interpreter_invocation_count; 1543 m->_interpreter_throwout_count = rec->_interpreter_throwout_count; 1544 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR); 1545 guarantee(mcs != NULL, "method counters allocation failed"); 1546 mcs->invocation_counter()->_counter = rec->_invocation_counter; 1547 mcs->backedge_counter()->_counter = rec->_backedge_counter; 1548 } 1549 } 1550 1551 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) { 1552 assert(!no_replay_state(), "must have replay state"); 1553 1554 ASSERT_IN_VM; 1555 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik); 1556 assert(rec != NULL, "ciInstanceKlass must be whitelisted"); 1557 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror)); 1558 } 1559 1560 bool ciReplay::is_loaded(Method* method) { 1561 if (no_replay_state()) { 1562 return true; 1563 } 1564 1565 ASSERT_IN_VM; 1566 ResourceMark rm; 1567 1568 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1569 return rec != NULL; 1570 } 1571 1572 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) { 1573 if (no_replay_state()) { 1574 return false; 1575 } 1576 1577 // Check if klass is found on whitelist. 1578 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass); 1579 return rec == NULL; 1580 } 1581 #endif // PRODUCT 1582 1583 oop ciReplay::obj_field(oop obj, Symbol* name) { 1584 InstanceKlass* ik = InstanceKlass::cast(obj->klass()); 1585 1586 do { 1587 if (!ik->has_nonstatic_fields()) { 1588 ik = ik->java_super(); 1589 continue; 1590 } 1591 1592 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) { 1593 if (fs.access_flags().is_static()) { 1594 continue; 1595 } 1596 if (fs.name() == name) { 1597 int offset = fs.offset(); 1598 #ifdef ASSERT 1599 fieldDescriptor fd = fs.field_descriptor(); 1600 assert(fd.offset() == ik->field_offset(fd.index()), "!"); 1601 #endif 1602 oop f = obj->obj_field(offset); 1603 return f; 1604 } 1605 } 1606 1607 ik = ik->java_super(); 1608 } while (ik != NULL); 1609 return NULL; 1610 } 1611 1612 oop ciReplay::obj_field(oop obj, const char *name) { 1613 Symbol* fname = SymbolTable::probe(name, (int)strlen(name)); 1614 if (fname == NULL) { 1615 return NULL; 1616 } 1617 return obj_field(obj, fname); 1618 }