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 "ci/ciMethodData.hpp" 27 #include "ci/ciReplay.hpp" 28 #include "ci/ciSymbol.hpp" 29 #include "ci/ciKlass.hpp" 30 #include "ci/ciUtilities.inline.hpp" 31 #include "classfile/javaClasses.hpp" 32 #include "classfile/symbolTable.hpp" 33 #include "classfile/systemDictionary.hpp" 34 #include "compiler/compilationPolicy.hpp" 35 #include "compiler/compileBroker.hpp" 36 #include "compiler/compilerDefinitions.inline.hpp" 37 #include "interpreter/linkResolver.hpp" 38 #include "jvm.h" 39 #include "memory/allocation.inline.hpp" 40 #include "memory/oopFactory.hpp" 41 #include "memory/resourceArea.hpp" 42 #include "oops/constantPool.hpp" 43 #include "oops/cpCache.inline.hpp" 44 #include "oops/fieldStreams.inline.hpp" 45 #include "oops/klass.inline.hpp" 46 #include "oops/method.inline.hpp" 47 #include "oops/oop.inline.hpp" 48 #include "prims/jvmtiExport.hpp" 49 #include "prims/methodHandles.hpp" 50 #include "runtime/fieldDescriptor.inline.hpp" 51 #include "runtime/globals_extension.hpp" 52 #include "runtime/handles.inline.hpp" 53 #include "runtime/java.hpp" 54 #include "runtime/jniHandles.inline.hpp" 55 #include "runtime/threads.hpp" 56 #include "utilities/copy.hpp" 57 #include "utilities/macros.hpp" 58 #include "utilities/utf8.hpp" 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 = Bytecode_invoke_check(caller, bci); 402 if (!Bytecodes::is_defined(bytecode.code()) || !bytecode.is_valid()) { 403 report_error("no invoke found at bci"); 404 return NULL; 405 } 406 bytecode.verify(); 407 int index = bytecode.index(); 408 409 ConstantPoolCacheEntry* cp_cache_entry = NULL; 410 CallInfo callInfo; 411 Bytecodes::Code bc = bytecode.invoke_code(); 412 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL); 413 if (bytecode.is_invokedynamic()) { 414 cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index); 415 cp_cache_entry->set_dynamic_call(cp, callInfo); 416 } else if (bytecode.is_invokehandle()) { 417 #ifdef ASSERT 418 Klass* holder = cp->klass_ref_at(index, CHECK_NULL); 419 Symbol* name = cp->name_ref_at(index); 420 assert(MethodHandles::is_signature_polymorphic_name(holder, name), ""); 421 #endif 422 cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index)); 423 cp_cache_entry->set_method_handle(cp, callInfo); 424 } else { 425 report_error("no dynamic invoke found"); 426 return NULL; 427 } 428 char* dyno_ref = parse_string(); 429 if (strcmp(dyno_ref, "<appendix>") == 0) { 430 obj = cp_cache_entry->appendix_if_resolved(cp); 431 } else if (strcmp(dyno_ref, "<adapter>") == 0) { 432 if (!parse_terminator()) { 433 report_error("no dynamic invoke found"); 434 return NULL; 435 } 436 Method* adapter = cp_cache_entry->f1_as_method(); 437 if (adapter == NULL) { 438 report_error("no adapter found"); 439 return NULL; 440 } 441 return adapter->method_holder(); 442 } else if (strcmp(dyno_ref, "<bsm>") == 0) { 443 int pool_index = cp_cache_entry->constant_pool_index(); 444 BootstrapInfo bootstrap_specifier(cp, pool_index, index); 445 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL); 446 } else { 447 report_error("unrecognized token"); 448 return NULL; 449 } 450 } else { 451 // constant pool ref (MethodHandle) 452 if (strcmp(ref, "cpi") != 0) { 453 report_error("unexpected token"); 454 return NULL; 455 } 456 457 Klass* k = parse_klass(CHECK_NULL); 458 if (k == NULL) { 459 return NULL; 460 } 461 InstanceKlass* ik = InstanceKlass::cast(k); 462 const constantPoolHandle cp(Thread::current(), ik->constants()); 463 464 int cpi = parse_int("cpi"); 465 466 if (cpi >= cp->length()) { 467 report_error("bad cpi"); 468 return NULL; 469 } 470 if (!cp->tag_at(cpi).is_method_handle()) { 471 report_error("no method handle found at cpi"); 472 return NULL; 473 } 474 ik->link_class(CHECK_NULL); 475 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL); 476 } 477 if (obj == NULL) { 478 report_error("null cp object found"); 479 return NULL; 480 } 481 Klass* k = NULL; 482 skip_ws(); 483 // loop: read fields 484 char* field = NULL; 485 do { 486 field = parse_string(); 487 if (field == NULL) { 488 report_error("no field found"); 489 return NULL; 490 } 491 if (strcmp(field, ";") == 0) { 492 break; 493 } 494 // raw Method* 495 if (strcmp(field, "<vmtarget>") == 0) { 496 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); 497 k = (vmtarget == NULL) ? NULL : vmtarget->method_holder(); 498 if (k == NULL) { 499 report_error("null vmtarget found"); 500 return NULL; 501 } 502 if (!parse_terminator()) { 503 report_error("missing terminator"); 504 return NULL; 505 } 506 return k; 507 } 508 obj = ciReplay::obj_field(obj, field); 509 // array 510 if (obj != NULL && obj->is_objArray()) { 511 objArrayOop arr = (objArrayOop)obj; 512 int index = parse_int("index"); 513 if (index >= arr->length()) { 514 report_error("bad array index"); 515 return NULL; 516 } 517 obj = arr->obj_at(index); 518 } 519 } while (obj != NULL); 520 if (obj == NULL) { 521 report_error("null field found"); 522 return NULL; 523 } 524 k = obj->klass(); 525 return k; 526 } 527 528 // Parse a valid klass name and look it up 529 // syntax: <name> 530 // syntax: <constant pool ref> 531 Klass* parse_klass(TRAPS) { 532 skip_ws(); 533 // check for constant pool object reference (for a dynamic/hidden class) 534 bool cp_ref = (*_bufptr == '@'); 535 if (cp_ref) { 536 ++_bufptr; 537 Klass* k = parse_cp_ref(CHECK_NULL); 538 if (k != NULL && !k->is_hidden()) { 539 report_error("expected hidden class"); 540 return NULL; 541 } 542 return k; 543 } 544 char* str = parse_escaped_string(); 545 Symbol* klass_name = SymbolTable::new_symbol(str); 546 if (klass_name != NULL) { 547 Klass* k = NULL; 548 if (_iklass != NULL) { 549 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding(); 550 } else { 551 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 552 } 553 if (HAS_PENDING_EXCEPTION) { 554 oop throwable = PENDING_EXCEPTION; 555 java_lang_Throwable::print(throwable, tty); 556 tty->cr(); 557 report_error(str); 558 if (ReplayIgnoreInitErrors) { 559 CLEAR_PENDING_EXCEPTION; 560 _error_message = NULL; 561 } 562 return NULL; 563 } 564 return k; 565 } 566 return NULL; 567 } 568 569 // Lookup a klass 570 Klass* resolve_klass(const char* klass, TRAPS) { 571 Symbol* klass_name = SymbolTable::new_symbol(klass); 572 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 573 } 574 575 // Parse the standard tuple of <klass> <name> <signature> 576 Method* parse_method(TRAPS) { 577 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL); 578 if (k == NULL) { 579 report_error("Can't find holder klass"); 580 return NULL; 581 } 582 Symbol* method_name = parse_symbol(); 583 Symbol* method_signature = parse_symbol(); 584 Method* m = k->find_method(method_name, method_signature); 585 if (m == NULL) { 586 report_error("Can't find method"); 587 } 588 return m; 589 } 590 591 int get_line(int c) { 592 int buffer_pos = 0; 593 while(c != EOF) { 594 if (buffer_pos + 1 >= _buffer_length) { 595 int new_length = _buffer_length * 2; 596 // Next call will throw error in case of OOM. 597 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length); 598 _buffer_length = new_length; 599 } 600 if (c == '\n') { 601 c = getc(_stream); // get next char 602 break; 603 } else if (c == '\r') { 604 // skip LF 605 } else { 606 _buffer[buffer_pos++] = c; 607 } 608 c = getc(_stream); 609 } 610 // null terminate it, reset the pointer 611 _buffer[buffer_pos] = '\0'; // NL or EOF 612 _bufptr = _buffer; 613 return c; 614 } 615 616 // Process each line of the replay file executing each command until 617 // the file ends. 618 void process(TRAPS) { 619 int line_no = 1; 620 int c = getc(_stream); 621 while(c != EOF) { 622 c = get_line(c); 623 process_command(THREAD); 624 if (had_error()) { 625 int pos = _bufptr - _buffer + 1; 626 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message); 627 if (ReplayIgnoreInitErrors) { 628 CLEAR_PENDING_EXCEPTION; 629 _error_message = NULL; 630 } else { 631 return; 632 } 633 } 634 line_no++; 635 } 636 reset(); 637 } 638 639 void process_command(TRAPS) { 640 char* cmd = parse_string(); 641 if (cmd == NULL) { 642 return; 643 } 644 if (strcmp("#", cmd) == 0) { 645 // comment line, print or ignore 646 if (Verbose) { 647 tty->print_cr("# %s", _bufptr); 648 } 649 skip_remaining(); 650 } else if (strcmp("version", cmd) == 0) { 651 _version = parse_int("version"); 652 if (_version < 0 || _version > REPLAY_VERSION) { 653 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION); 654 } 655 } else if (strcmp("compile", cmd) == 0) { 656 process_compile(CHECK); 657 } else if (strcmp("ciMethod", cmd) == 0) { 658 process_ciMethod(CHECK); 659 } else if (strcmp("ciMethodData", cmd) == 0) { 660 process_ciMethodData(CHECK); 661 } else if (strcmp("staticfield", cmd) == 0) { 662 process_staticfield(CHECK); 663 } else if (strcmp("ciInstanceKlass", cmd) == 0) { 664 process_ciInstanceKlass(CHECK); 665 } else if (strcmp("instanceKlass", cmd) == 0) { 666 process_instanceKlass(CHECK); 667 #if INCLUDE_JVMTI 668 } else if (strcmp("JvmtiExport", cmd) == 0) { 669 process_JvmtiExport(CHECK); 670 #endif // INCLUDE_JVMTI 671 } else { 672 report_error("unknown command"); 673 } 674 if (!had_error() && *_bufptr != '\0') { 675 report_error("line not properly terminated"); 676 } 677 } 678 679 // validation of comp_level 680 bool is_valid_comp_level(int comp_level) { 681 const int msg_len = 256; 682 char* msg = NULL; 683 if (!is_compile(comp_level)) { 684 msg = NEW_RESOURCE_ARRAY(char, msg_len); 685 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level); 686 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) { 687 msg = NEW_RESOURCE_ARRAY(char, msg_len); 688 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level); 689 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) { 690 msg = NEW_RESOURCE_ARRAY(char, msg_len); 691 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level); 692 } 693 if (msg != NULL) { 694 report_error(msg); 695 return false; 696 } 697 return true; 698 } 699 700 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)* 701 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) { 702 _imethod = m; 703 _iklass = imethod->holder(); 704 _entry_bci = entry_bci; 705 _comp_level = comp_level; 706 int line_no = 1; 707 int c = getc(_stream); 708 while(c != EOF) { 709 c = get_line(c); 710 // Expecting only lines with "compile" command in inline replay file. 711 char* cmd = parse_string(); 712 if (cmd == NULL || strcmp("compile", cmd) != 0) { 713 return NULL; 714 } 715 process_compile(CHECK_NULL); 716 if (had_error()) { 717 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 718 tty->print_cr("%s", _buffer); 719 return NULL; 720 } 721 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) { 722 // Found inlining record for the requested method. 723 return _ci_inline_records; 724 } 725 line_no++; 726 } 727 return NULL; 728 } 729 730 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)* 731 void process_compile(TRAPS) { 732 Method* method = parse_method(CHECK); 733 if (had_error()) return; 734 int entry_bci = parse_int("entry_bci"); 735 int comp_level = parse_int("comp_level"); 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 } 807 808 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 809 void process_ciMethod(TRAPS) { 810 Method* method = parse_method(CHECK); 811 if (had_error()) return; 812 ciMethodRecord* rec = new_ciMethod(method); 813 rec->_invocation_counter = parse_int("invocation_counter"); 814 rec->_backedge_counter = parse_int("backedge_counter"); 815 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count"); 816 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count"); 817 rec->_instructions_size = parse_int("instructions_size"); 818 } 819 820 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)* 821 void process_ciMethodData(TRAPS) { 822 Method* method = parse_method(CHECK); 823 if (had_error()) return; 824 /* just copied from Method, to build interpret data*/ 825 826 // To be properly initialized, some profiling in the MDO needs the 827 // method to be rewritten (number of arguments at a call for instance) 828 method->method_holder()->link_class(CHECK); 829 assert(method->method_data() == NULL, "Should only be initialized once"); 830 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 831 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK); 832 method->set_method_data(method_data); 833 834 // collect and record all the needed information for later 835 ciMethodDataRecord* rec = new_ciMethodData(method); 836 rec->_state = parse_int("state"); 837 if (_version < 1) { 838 parse_int("current_mileage"); 839 } else { 840 rec->_invocation_counter = parse_int("invocation_counter"); 841 } 842 843 rec->_orig_data = parse_data("orig", rec->_orig_data_length); 844 if (rec->_orig_data == NULL) { 845 return; 846 } 847 rec->_data = parse_intptr_data("data", rec->_data_length); 848 if (rec->_data == NULL) { 849 return; 850 } 851 if (!parse_tag_and_count("oops", rec->_classes_length)) { 852 return; 853 } 854 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length); 855 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length); 856 for (int i = 0; i < rec->_classes_length; i++) { 857 int offset = parse_int("offset"); 858 if (had_error()) { 859 return; 860 } 861 Klass* k = parse_klass(CHECK); 862 rec->_classes_offsets[i] = offset; 863 rec->_classes[i] = k; 864 } 865 866 if (!parse_tag_and_count("methods", rec->_methods_length)) { 867 return; 868 } 869 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length); 870 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length); 871 for (int i = 0; i < rec->_methods_length; i++) { 872 int offset = parse_int("offset"); 873 if (had_error()) { 874 return; 875 } 876 Method* m = parse_method(CHECK); 877 rec->_methods_offsets[i] = offset; 878 rec->_methods[i] = m; 879 } 880 } 881 882 // instanceKlass <name> 883 // instanceKlass <constant pool ref> # <original hidden class name> 884 // 885 // Loads and initializes the klass 'name'. This can be used to 886 // create particular class loading environments 887 void process_instanceKlass(TRAPS) { 888 // just load the referenced class 889 Klass* k = parse_klass(CHECK); 890 891 if (_version >= 1) { 892 if (!_protection_domain_initialized && k != NULL) { 893 assert(_protection_domain() == NULL, "must be uninitialized"); 894 // The first entry is the holder class of the method for which a replay compilation is requested. 895 // Use the same protection domain to load all subsequent classes in order to resolve all classes 896 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file. 897 _protection_domain = Handle(_thread, k->protection_domain()); 898 } 899 900 _protection_domain_initialized = true; 901 } 902 903 if (k == NULL) { 904 return; 905 } 906 const char* comment = parse_string(); 907 bool is_comment = comment != NULL && strcmp(comment, "#") == 0; 908 if (k->is_hidden() != is_comment) { 909 report_error("hidden class with comment expected"); 910 return; 911 } 912 // comment, print or ignore 913 if (is_comment) { 914 if (Verbose) { 915 const char* hidden = parse_string(); 916 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden); 917 } 918 skip_remaining(); 919 } 920 } 921 922 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag* 923 // 924 // Load the klass 'name' and link or initialize it. Verify that the 925 // constant pool is the same length as 'length' and make sure the 926 // constant pool tags are in the same state. 927 void process_ciInstanceKlass(TRAPS) { 928 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK); 929 if (k == NULL) { 930 skip_remaining(); 931 return; 932 } 933 int is_linked = parse_int("is_linked"); 934 int is_initialized = parse_int("is_initialized"); 935 int length = parse_int("length"); 936 if (is_initialized) { 937 k->initialize(THREAD); 938 if (HAS_PENDING_EXCEPTION) { 939 oop throwable = PENDING_EXCEPTION; 940 java_lang_Throwable::print(throwable, tty); 941 tty->cr(); 942 if (ReplayIgnoreInitErrors) { 943 CLEAR_PENDING_EXCEPTION; 944 k->set_init_state(InstanceKlass::fully_initialized); 945 } else { 946 return; 947 } 948 } 949 } else if (is_linked) { 950 k->link_class(CHECK); 951 } 952 new_ciInstanceKlass(k); 953 ConstantPool* cp = k->constants(); 954 if (length != cp->length()) { 955 report_error("constant pool length mismatch: wrong class files?"); 956 return; 957 } 958 959 int parsed_two_word = 0; 960 for (int i = 1; i < length; i++) { 961 int tag = parse_int("tag"); 962 if (had_error()) { 963 return; 964 } 965 switch (cp->tag_at(i).value()) { 966 case JVM_CONSTANT_UnresolvedClass: { 967 if (tag == JVM_CONSTANT_Class) { 968 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i); 969 Klass* k = cp->klass_at(i, CHECK); 970 } 971 break; 972 } 973 case JVM_CONSTANT_Long: 974 case JVM_CONSTANT_Double: 975 parsed_two_word = i + 1; 976 977 case JVM_CONSTANT_ClassIndex: 978 case JVM_CONSTANT_StringIndex: 979 case JVM_CONSTANT_String: 980 case JVM_CONSTANT_UnresolvedClassInError: 981 case JVM_CONSTANT_Fieldref: 982 case JVM_CONSTANT_Methodref: 983 case JVM_CONSTANT_InterfaceMethodref: 984 case JVM_CONSTANT_NameAndType: 985 case JVM_CONSTANT_Utf8: 986 case JVM_CONSTANT_Integer: 987 case JVM_CONSTANT_Float: 988 case JVM_CONSTANT_MethodHandle: 989 case JVM_CONSTANT_MethodType: 990 case JVM_CONSTANT_Dynamic: 991 case JVM_CONSTANT_InvokeDynamic: 992 if (tag != cp->tag_at(i).value()) { 993 report_error("tag mismatch: wrong class files?"); 994 return; 995 } 996 break; 997 998 case JVM_CONSTANT_Class: 999 if (tag == JVM_CONSTANT_UnresolvedClass) { 1000 Klass* k = cp->klass_at(i, CHECK); 1001 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8()); 1002 } else if (tag != JVM_CONSTANT_Class) { 1003 report_error("Unexpected tag"); 1004 return; 1005 } 1006 break; 1007 1008 case 0: 1009 if (parsed_two_word == i) continue; 1010 1011 default: 1012 fatal("Unexpected tag: %d", cp->tag_at(i).value()); 1013 break; 1014 } 1015 1016 } 1017 } 1018 1019 // staticfield <klass> <name> <signature> <value> 1020 // 1021 // Initialize a class and fill in the value for a static field. 1022 // This is useful when the compile was dependent on the value of 1023 // static fields but it's impossible to properly rerun the static 1024 // initializer. 1025 void process_staticfield(TRAPS) { 1026 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 1027 1028 if (k == NULL || ReplaySuppressInitializers == 0 || 1029 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) { 1030 skip_remaining(); 1031 return; 1032 } 1033 1034 assert(k->is_initialized(), "must be"); 1035 1036 const char* field_name = parse_escaped_string(); 1037 const char* field_signature = parse_string(); 1038 fieldDescriptor fd; 1039 Symbol* name = SymbolTable::new_symbol(field_name); 1040 Symbol* sig = SymbolTable::new_symbol(field_signature); 1041 if (!k->find_local_field(name, sig, &fd) || 1042 !fd.is_static() || 1043 fd.has_initial_value()) { 1044 report_error(field_name); 1045 return; 1046 } 1047 1048 oop java_mirror = k->java_mirror(); 1049 if (field_signature[0] == JVM_SIGNATURE_ARRAY) { 1050 int length = parse_int("array length"); 1051 oop value = NULL; 1052 1053 if (field_signature[1] == JVM_SIGNATURE_ARRAY) { 1054 // multi dimensional array 1055 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 1056 if (kelem == NULL) { 1057 return; 1058 } 1059 int rank = 0; 1060 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) { 1061 rank++; 1062 } 1063 jint* dims = NEW_RESOURCE_ARRAY(jint, rank); 1064 dims[0] = length; 1065 for (int i = 1; i < rank; i++) { 1066 dims[i] = 1; // These aren't relevant to the compiler 1067 } 1068 value = kelem->multi_allocate(rank, dims, CHECK); 1069 } else { 1070 if (strcmp(field_signature, "[B") == 0) { 1071 value = oopFactory::new_byteArray(length, CHECK); 1072 } else if (strcmp(field_signature, "[Z") == 0) { 1073 value = oopFactory::new_boolArray(length, CHECK); 1074 } else if (strcmp(field_signature, "[C") == 0) { 1075 value = oopFactory::new_charArray(length, CHECK); 1076 } else if (strcmp(field_signature, "[S") == 0) { 1077 value = oopFactory::new_shortArray(length, CHECK); 1078 } else if (strcmp(field_signature, "[F") == 0) { 1079 value = oopFactory::new_floatArray(length, CHECK); 1080 } else if (strcmp(field_signature, "[D") == 0) { 1081 value = oopFactory::new_doubleArray(length, CHECK); 1082 } else if (strcmp(field_signature, "[I") == 0) { 1083 value = oopFactory::new_intArray(length, CHECK); 1084 } else if (strcmp(field_signature, "[J") == 0) { 1085 value = oopFactory::new_longArray(length, CHECK); 1086 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY && 1087 field_signature[1] == JVM_SIGNATURE_CLASS) { 1088 Klass* kelem = resolve_klass(field_signature + 1, CHECK); 1089 value = oopFactory::new_objArray(kelem, length, CHECK); 1090 } else { 1091 report_error("unhandled array staticfield"); 1092 } 1093 } 1094 java_mirror->obj_field_put(fd.offset(), value); 1095 } else { 1096 const char* string_value = parse_escaped_string(); 1097 if (strcmp(field_signature, "I") == 0) { 1098 int value = atoi(string_value); 1099 java_mirror->int_field_put(fd.offset(), value); 1100 } else if (strcmp(field_signature, "B") == 0) { 1101 int value = atoi(string_value); 1102 java_mirror->byte_field_put(fd.offset(), value); 1103 } else if (strcmp(field_signature, "C") == 0) { 1104 int value = atoi(string_value); 1105 java_mirror->char_field_put(fd.offset(), value); 1106 } else if (strcmp(field_signature, "S") == 0) { 1107 int value = atoi(string_value); 1108 java_mirror->short_field_put(fd.offset(), value); 1109 } else if (strcmp(field_signature, "Z") == 0) { 1110 int value = atoi(string_value); 1111 java_mirror->bool_field_put(fd.offset(), value); 1112 } else if (strcmp(field_signature, "J") == 0) { 1113 jlong value; 1114 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) { 1115 fprintf(stderr, "Error parsing long: %s\n", string_value); 1116 return; 1117 } 1118 java_mirror->long_field_put(fd.offset(), value); 1119 } else if (strcmp(field_signature, "F") == 0) { 1120 float value = atof(string_value); 1121 java_mirror->float_field_put(fd.offset(), value); 1122 } else if (strcmp(field_signature, "D") == 0) { 1123 double value = atof(string_value); 1124 java_mirror->double_field_put(fd.offset(), value); 1125 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 1126 Handle value = java_lang_String::create_from_str(string_value, CHECK); 1127 java_mirror->obj_field_put(fd.offset(), value()); 1128 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) { 1129 Klass* k = resolve_klass(string_value, CHECK); 1130 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK); 1131 java_mirror->obj_field_put(fd.offset(), value); 1132 } else { 1133 report_error("unhandled staticfield"); 1134 } 1135 } 1136 } 1137 1138 #if INCLUDE_JVMTI 1139 // JvmtiExport <field> <value> 1140 void process_JvmtiExport(TRAPS) { 1141 const char* field = parse_string(); 1142 bool value = parse_int("JvmtiExport flag") != 0; 1143 if (strcmp(field, "can_access_local_variables") == 0) { 1144 JvmtiExport::set_can_access_local_variables(value); 1145 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 1146 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 1147 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 1148 JvmtiExport::set_can_post_on_exceptions(value); 1149 } else { 1150 report_error("Unrecognized JvmtiExport directive"); 1151 } 1152 } 1153 #endif // INCLUDE_JVMTI 1154 1155 // Create and initialize a record for a ciMethod 1156 ciMethodRecord* new_ciMethod(Method* method) { 1157 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 1158 rec->_klass_name = method->method_holder()->name()->as_utf8(); 1159 rec->_method_name = method->name()->as_utf8(); 1160 rec->_signature = method->signature()->as_utf8(); 1161 _ci_method_records.append(rec); 1162 return rec; 1163 } 1164 1165 // Lookup data for a ciMethod 1166 ciMethodRecord* find_ciMethodRecord(Method* method) { 1167 const char* klass_name = method->method_holder()->name()->as_utf8(); 1168 const char* method_name = method->name()->as_utf8(); 1169 const char* signature = method->signature()->as_utf8(); 1170 for (int i = 0; i < _ci_method_records.length(); i++) { 1171 ciMethodRecord* rec = _ci_method_records.at(i); 1172 if (strcmp(rec->_klass_name, klass_name) == 0 && 1173 strcmp(rec->_method_name, method_name) == 0 && 1174 strcmp(rec->_signature, signature) == 0) { 1175 return rec; 1176 } 1177 } 1178 return NULL; 1179 } 1180 1181 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time. 1182 void new_ciInstanceKlass(const InstanceKlass* klass) { 1183 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord); 1184 rec->_klass = klass; 1185 oop java_mirror = klass->java_mirror(); 1186 Handle h_java_mirror(_thread, java_mirror); 1187 rec->_java_mirror = JNIHandles::make_global(h_java_mirror); 1188 _ci_instance_klass_records.append(rec); 1189 } 1190 1191 // Check if a ciInstanceKlass was present at replay dump time for a klass. 1192 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) { 1193 for (int i = 0; i < _ci_instance_klass_records.length(); i++) { 1194 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i); 1195 if (klass == rec->_klass) { 1196 // ciInstanceKlass for this klass was resolved. 1197 return rec; 1198 } 1199 } 1200 return NULL; 1201 } 1202 1203 // Create and initialize a record for a ciMethodData 1204 ciMethodDataRecord* new_ciMethodData(Method* method) { 1205 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 1206 rec->_klass_name = method->method_holder()->name()->as_utf8(); 1207 rec->_method_name = method->name()->as_utf8(); 1208 rec->_signature = method->signature()->as_utf8(); 1209 _ci_method_data_records.append(rec); 1210 return rec; 1211 } 1212 1213 // Lookup data for a ciMethodData 1214 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 1215 const char* klass_name = method->method_holder()->name()->as_utf8(); 1216 const char* method_name = method->name()->as_utf8(); 1217 const char* signature = method->signature()->as_utf8(); 1218 for (int i = 0; i < _ci_method_data_records.length(); i++) { 1219 ciMethodDataRecord* rec = _ci_method_data_records.at(i); 1220 if (strcmp(rec->_klass_name, klass_name) == 0 && 1221 strcmp(rec->_method_name, method_name) == 0 && 1222 strcmp(rec->_signature, signature) == 0) { 1223 return rec; 1224 } 1225 } 1226 return NULL; 1227 } 1228 1229 // Create and initialize a record for a ciInlineRecord 1230 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) { 1231 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord); 1232 rec->_klass_name = method->method_holder()->name()->as_utf8(); 1233 rec->_method_name = method->name()->as_utf8(); 1234 rec->_signature = method->signature()->as_utf8(); 1235 rec->_inline_bci = bci; 1236 rec->_inline_depth = depth; 1237 rec->_inline_late = inline_late; 1238 _ci_inline_records->append(rec); 1239 return rec; 1240 } 1241 1242 // Lookup inlining data for a ciMethod 1243 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) { 1244 if (_ci_inline_records != NULL) { 1245 return find_ciInlineRecord(_ci_inline_records, method, bci, depth); 1246 } 1247 return NULL; 1248 } 1249 1250 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records, 1251 Method* method, int bci, int depth) { 1252 if (records != NULL) { 1253 const char* klass_name = method->method_holder()->name()->as_utf8(); 1254 const char* method_name = method->name()->as_utf8(); 1255 const char* signature = method->signature()->as_utf8(); 1256 for (int i = 0; i < records->length(); i++) { 1257 ciInlineRecord* rec = records->at(i); 1258 if ((rec->_inline_bci == bci) && 1259 (rec->_inline_depth == depth) && 1260 (strcmp(rec->_klass_name, klass_name) == 0) && 1261 (strcmp(rec->_method_name, method_name) == 0) && 1262 (strcmp(rec->_signature, signature) == 0)) { 1263 return rec; 1264 } 1265 } 1266 } 1267 return NULL; 1268 } 1269 1270 const char* error_message() { 1271 return _error_message; 1272 } 1273 1274 void reset() { 1275 _error_message = NULL; 1276 _ci_method_records.clear(); 1277 _ci_method_data_records.clear(); 1278 } 1279 1280 // Take an ascii string contain \u#### escapes and convert it to utf8 1281 // in place. 1282 static void unescape_string(char* value) { 1283 char* from = value; 1284 char* to = value; 1285 while (*from != '\0') { 1286 if (*from != '\\') { 1287 *from++ = *to++; 1288 } else { 1289 switch (from[1]) { 1290 case 'u': { 1291 from += 2; 1292 jchar value=0; 1293 for (int i=0; i<4; i++) { 1294 char c = *from++; 1295 switch (c) { 1296 case '0': case '1': case '2': case '3': case '4': 1297 case '5': case '6': case '7': case '8': case '9': 1298 value = (value << 4) + c - '0'; 1299 break; 1300 case 'a': case 'b': case 'c': 1301 case 'd': case 'e': case 'f': 1302 value = (value << 4) + 10 + c - 'a'; 1303 break; 1304 case 'A': case 'B': case 'C': 1305 case 'D': case 'E': case 'F': 1306 value = (value << 4) + 10 + c - 'A'; 1307 break; 1308 default: 1309 ShouldNotReachHere(); 1310 } 1311 } 1312 UNICODE::convert_to_utf8(&value, 1, to); 1313 to++; 1314 break; 1315 } 1316 case 't': *to++ = '\t'; from += 2; break; 1317 case 'n': *to++ = '\n'; from += 2; break; 1318 case 'r': *to++ = '\r'; from += 2; break; 1319 case 'f': *to++ = '\f'; from += 2; break; 1320 default: 1321 ShouldNotReachHere(); 1322 } 1323 } 1324 } 1325 *from = *to; 1326 } 1327 }; 1328 1329 void ciReplay::replay(TRAPS) { 1330 int exit_code = replay_impl(THREAD); 1331 1332 Threads::destroy_vm(); 1333 1334 vm_exit(exit_code); 1335 } 1336 1337 bool ciReplay::no_replay_state() { 1338 return replay_state == NULL; 1339 } 1340 1341 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) { 1342 if (FLAG_IS_DEFAULT(InlineDataFile)) { 1343 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt)."); 1344 return NULL; 1345 } 1346 1347 VM_ENTRY_MARK; 1348 // Load and parse the replay data 1349 CompileReplay rp(InlineDataFile, THREAD); 1350 if (!rp.can_replay()) { 1351 tty->print_cr("ciReplay: !rp.can_replay()"); 1352 return NULL; 1353 } 1354 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD); 1355 if (HAS_PENDING_EXCEPTION) { 1356 Handle throwable(THREAD, PENDING_EXCEPTION); 1357 CLEAR_PENDING_EXCEPTION; 1358 java_lang_Throwable::print_stack_trace(throwable, tty); 1359 tty->cr(); 1360 return NULL; 1361 } 1362 1363 if (rp.had_error()) { 1364 tty->print_cr("ciReplay: Failed on %s", rp.error_message()); 1365 return NULL; 1366 } 1367 return data; 1368 } 1369 1370 int ciReplay::replay_impl(TRAPS) { 1371 HandleMark hm(THREAD); 1372 ResourceMark rm(THREAD); 1373 1374 if (ReplaySuppressInitializers > 2) { 1375 // ReplaySuppressInitializers > 2 means that we want to allow 1376 // normal VM bootstrap but once we get into the replay itself 1377 // don't allow any initializers to be run. 1378 ReplaySuppressInitializers = 1; 1379 } 1380 1381 if (FLAG_IS_DEFAULT(ReplayDataFile)) { 1382 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt)."); 1383 return 1; 1384 } 1385 1386 // Load and parse the replay data 1387 CompileReplay rp(ReplayDataFile, THREAD); 1388 int exit_code = 0; 1389 if (rp.can_replay()) { 1390 rp.process(THREAD); 1391 } else { 1392 exit_code = 1; 1393 return exit_code; 1394 } 1395 1396 if (HAS_PENDING_EXCEPTION) { 1397 Handle throwable(THREAD, PENDING_EXCEPTION); 1398 CLEAR_PENDING_EXCEPTION; 1399 java_lang_Throwable::print_stack_trace(throwable, tty); 1400 tty->cr(); 1401 exit_code = 2; 1402 } 1403 1404 if (rp.had_error()) { 1405 tty->print_cr("Failed on %s", rp.error_message()); 1406 exit_code = 1; 1407 } 1408 return exit_code; 1409 } 1410 1411 void ciReplay::initialize(ciMethodData* m) { 1412 if (no_replay_state()) { 1413 return; 1414 } 1415 1416 ASSERT_IN_VM; 1417 ResourceMark rm; 1418 1419 Method* method = m->get_MethodData()->method(); 1420 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 1421 if (rec == NULL) { 1422 // This indicates some mismatch with the original environment and 1423 // the replay environment though it's not always enough to 1424 // interfere with reproducing a bug 1425 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 1426 method->print_name(tty); 1427 tty->cr(); 1428 } else { 1429 m->_state = rec->_state; 1430 m->_invocation_counter = rec->_invocation_counter; 1431 if (rec->_data_length != 0) { 1432 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) || 1433 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree"); 1434 1435 // Write the correct ciObjects back into the profile data 1436 ciEnv* env = ciEnv::current(); 1437 for (int i = 0; i < rec->_classes_length; i++) { 1438 Klass *k = rec->_classes[i]; 1439 // In case this class pointer is is tagged, preserve the tag bits 1440 intptr_t status = 0; 1441 if (k != NULL) { 1442 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]); 1443 } 1444 rec->_data[rec->_classes_offsets[i]] = status; 1445 } 1446 for (int i = 0; i < rec->_methods_length; i++) { 1447 Method *m = rec->_methods[i]; 1448 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) = 1449 env->get_metadata(m); 1450 } 1451 // Copy the updated profile data into place as intptr_ts 1452 #ifdef _LP64 1453 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length); 1454 #else 1455 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length); 1456 #endif 1457 } 1458 1459 // copy in the original header 1460 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length); 1461 } 1462 } 1463 1464 1465 bool ciReplay::should_not_inline(ciMethod* method) { 1466 if (no_replay_state()) { 1467 return false; 1468 } 1469 VM_ENTRY_MARK; 1470 // ciMethod without a record shouldn't be inlined. 1471 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 1472 } 1473 1474 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) { 1475 if (data != NULL) { 1476 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1477 VM_ENTRY_MARK; 1478 // Inline record are ordered by bci and depth. 1479 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth); 1480 if (record == NULL) { 1481 return false; 1482 } 1483 should_delay = record->_inline_late; 1484 return true; 1485 } else if (replay_state != NULL) { 1486 VM_ENTRY_MARK; 1487 // Inline record are ordered by bci and depth. 1488 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth); 1489 if (record == NULL) { 1490 return false; 1491 } 1492 should_delay = record->_inline_late; 1493 return true; 1494 } 1495 return false; 1496 } 1497 1498 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) { 1499 if (data != NULL) { 1500 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1501 VM_ENTRY_MARK; 1502 // Inline record are ordered by bci and depth. 1503 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL; 1504 } else if (replay_state != NULL) { 1505 VM_ENTRY_MARK; 1506 // Inline record are ordered by bci and depth. 1507 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL; 1508 } 1509 return false; 1510 } 1511 1512 void ciReplay::initialize(ciMethod* m) { 1513 if (no_replay_state()) { 1514 return; 1515 } 1516 1517 ASSERT_IN_VM; 1518 ResourceMark rm; 1519 1520 Method* method = m->get_Method(); 1521 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1522 if (rec == NULL) { 1523 // This indicates some mismatch with the original environment and 1524 // the replay environment though it's not always enough to 1525 // interfere with reproducing a bug 1526 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 1527 method->print_name(tty); 1528 tty->cr(); 1529 } else { 1530 EXCEPTION_CONTEXT; 1531 // m->_instructions_size = rec->_instructions_size; 1532 m->_instructions_size = -1; 1533 m->_interpreter_invocation_count = rec->_interpreter_invocation_count; 1534 m->_interpreter_throwout_count = rec->_interpreter_throwout_count; 1535 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR); 1536 guarantee(mcs != NULL, "method counters allocation failed"); 1537 mcs->invocation_counter()->_counter = rec->_invocation_counter; 1538 mcs->backedge_counter()->_counter = rec->_backedge_counter; 1539 } 1540 } 1541 1542 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) { 1543 assert(!no_replay_state(), "must have replay state"); 1544 1545 ASSERT_IN_VM; 1546 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik); 1547 assert(rec != NULL, "ciInstanceKlass must be whitelisted"); 1548 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror)); 1549 } 1550 1551 bool ciReplay::is_loaded(Method* method) { 1552 if (no_replay_state()) { 1553 return true; 1554 } 1555 1556 ASSERT_IN_VM; 1557 ResourceMark rm; 1558 1559 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1560 return rec != NULL; 1561 } 1562 1563 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) { 1564 if (no_replay_state()) { 1565 return false; 1566 } 1567 1568 // Check if klass is found on whitelist. 1569 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass); 1570 return rec == NULL; 1571 } 1572 1573 oop ciReplay::obj_field(oop obj, Symbol* name) { 1574 InstanceKlass* ik = InstanceKlass::cast(obj->klass()); 1575 1576 do { 1577 if (!ik->has_nonstatic_fields()) { 1578 ik = ik->java_super(); 1579 continue; 1580 } 1581 1582 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) { 1583 if (fs.access_flags().is_static()) { 1584 continue; 1585 } 1586 if (fs.name() == name) { 1587 int offset = fs.offset(); 1588 #ifdef ASSERT 1589 fieldDescriptor fd = fs.field_descriptor(); 1590 assert(fd.offset() == ik->field_offset(fd.index()), "!"); 1591 #endif 1592 oop f = obj->obj_field(offset); 1593 return f; 1594 } 1595 } 1596 1597 ik = ik->java_super(); 1598 } while (ik != NULL); 1599 return NULL; 1600 } 1601 1602 oop ciReplay::obj_field(oop obj, const char *name) { 1603 Symbol* fname = SymbolTable::probe(name, (int)strlen(name)); 1604 if (fname == NULL) { 1605 return NULL; 1606 } 1607 return obj_field(obj, fname); 1608 }