ciReplay.cpp revision 4592:e12c9b3740db
1/* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24#include "precompiled.hpp" 25#include "ci/ciMethodData.hpp" 26#include "ci/ciReplay.hpp" 27#include "ci/ciUtilities.hpp" 28#include "compiler/compileBroker.hpp" 29#include "memory/allocation.inline.hpp" 30#include "memory/oopFactory.hpp" 31#include "memory/resourceArea.hpp" 32#include "utilities/copy.hpp" 33#include "utilities/macros.hpp" 34 35#ifndef PRODUCT 36 37// ciReplay 38 39typedef struct _ciMethodDataRecord { 40 const char* klass; 41 const char* method; 42 const char* signature; 43 int state; 44 int current_mileage; 45 intptr_t* data; 46 int data_length; 47 char* orig_data; 48 int orig_data_length; 49 int oops_length; 50 jobject* oops_handles; 51 int* oops_offsets; 52} ciMethodDataRecord; 53 54typedef struct _ciMethodRecord { 55 const char* klass; 56 const char* method; 57 const char* signature; 58 int instructions_size; 59 int interpreter_invocation_count; 60 int interpreter_throwout_count; 61 int invocation_counter; 62 int backedge_counter; 63} ciMethodRecord; 64 65class CompileReplay; 66static CompileReplay* replay_state; 67 68class CompileReplay : public StackObj { 69 private: 70 FILE* stream; 71 Thread* thread; 72 Handle protection_domain; 73 Handle loader; 74 75 GrowableArray<ciMethodRecord*> ci_method_records; 76 GrowableArray<ciMethodDataRecord*> ci_method_data_records; 77 78 const char* _error_message; 79 80 char* bufptr; 81 char* buffer; 82 int buffer_length; 83 int buffer_end; 84 int line_no; 85 86 public: 87 CompileReplay(const char* filename, TRAPS) { 88 thread = THREAD; 89 loader = Handle(thread, SystemDictionary::java_system_loader()); 90 stream = fopen(filename, "rt"); 91 if (stream == NULL) { 92 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename); 93 } 94 buffer_length = 32; 95 buffer = NEW_RESOURCE_ARRAY(char, buffer_length); 96 _error_message = NULL; 97 98 test(); 99 } 100 101 ~CompileReplay() { 102 if (stream != NULL) fclose(stream); 103 } 104 105 void test() { 106 strcpy(buffer, "1 2 foo 4 bar 0x9 \"this is it\""); 107 bufptr = buffer; 108 assert(parse_int("test") == 1, "what"); 109 assert(parse_int("test") == 2, "what"); 110 assert(strcmp(parse_string(), "foo") == 0, "what"); 111 assert(parse_int("test") == 4, "what"); 112 assert(strcmp(parse_string(), "bar") == 0, "what"); 113 assert(parse_intptr_t("test") == 9, "what"); 114 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what"); 115 } 116 117 bool had_error() { 118 return _error_message != NULL || thread->has_pending_exception(); 119 } 120 121 bool can_replay() { 122 return !(stream == NULL || had_error()); 123 } 124 125 void report_error(const char* msg) { 126 _error_message = msg; 127 // Restore the buffer contents for error reporting 128 for (int i = 0; i < buffer_end; i++) { 129 if (buffer[i] == '\0') buffer[i] = ' '; 130 } 131 } 132 133 int parse_int(const char* label) { 134 if (had_error()) { 135 return 0; 136 } 137 138 int v = 0; 139 int read; 140 if (sscanf(bufptr, "%i%n", &v, &read) != 1) { 141 report_error(label); 142 } else { 143 bufptr += read; 144 } 145 return v; 146 } 147 148 intptr_t parse_intptr_t(const char* label) { 149 if (had_error()) { 150 return 0; 151 } 152 153 intptr_t v = 0; 154 int read; 155 if (sscanf(bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) { 156 report_error(label); 157 } else { 158 bufptr += read; 159 } 160 return v; 161 } 162 163 void skip_ws() { 164 // Skip any leading whitespace 165 while (*bufptr == ' ' || *bufptr == '\t') { 166 bufptr++; 167 } 168 } 169 170 171 char* scan_and_terminate(char delim) { 172 char* str = bufptr; 173 while (*bufptr != delim && *bufptr != '\0') { 174 bufptr++; 175 } 176 if (*bufptr != '\0') { 177 *bufptr++ = '\0'; 178 } 179 if (bufptr == str) { 180 // nothing here 181 return NULL; 182 } 183 return str; 184 } 185 186 char* parse_string() { 187 if (had_error()) return NULL; 188 189 skip_ws(); 190 return scan_and_terminate(' '); 191 } 192 193 char* parse_quoted_string() { 194 if (had_error()) return NULL; 195 196 skip_ws(); 197 198 if (*bufptr == '"') { 199 bufptr++; 200 return scan_and_terminate('"'); 201 } else { 202 return scan_and_terminate(' '); 203 } 204 } 205 206 const char* parse_escaped_string() { 207 char* result = parse_quoted_string(); 208 if (result != NULL) { 209 unescape_string(result); 210 } 211 return result; 212 } 213 214 // Look for the tag 'tag' followed by an 215 bool parse_tag_and_count(const char* tag, int& length) { 216 const char* t = parse_string(); 217 if (t == NULL) { 218 return false; 219 } 220 221 if (strcmp(tag, t) != 0) { 222 report_error(tag); 223 return false; 224 } 225 length = parse_int("parse_tag_and_count"); 226 return !had_error(); 227 } 228 229 // Parse a sequence of raw data encoded as bytes and return the 230 // resulting data. 231 char* parse_data(const char* tag, int& length) { 232 if (!parse_tag_and_count(tag, length)) { 233 return NULL; 234 } 235 236 char * result = NEW_RESOURCE_ARRAY(char, length); 237 for (int i = 0; i < length; i++) { 238 int val = parse_int("data"); 239 result[i] = val; 240 } 241 return result; 242 } 243 244 // Parse a standard chunk of data emitted as: 245 // 'tag' <length> # # ... 246 // Where each # is an intptr_t item 247 intptr_t* parse_intptr_data(const char* tag, int& length) { 248 if (!parse_tag_and_count(tag, length)) { 249 return NULL; 250 } 251 252 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length); 253 for (int i = 0; i < length; i++) { 254 skip_ws(); 255 intptr_t val = parse_intptr_t("data"); 256 result[i] = val; 257 } 258 return result; 259 } 260 261 // Parse a possibly quoted version of a symbol into a symbolOop 262 Symbol* parse_symbol(TRAPS) { 263 const char* str = parse_escaped_string(); 264 if (str != NULL) { 265 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL); 266 return sym; 267 } 268 return NULL; 269 } 270 271 // Parse a valid klass name and look it up 272 Klass* parse_klass(TRAPS) { 273 const char* str = parse_escaped_string(); 274 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL); 275 if (klass_name != NULL) { 276 Klass* k = SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, THREAD); 277 if (HAS_PENDING_EXCEPTION) { 278 oop throwable = PENDING_EXCEPTION; 279 java_lang_Throwable::print(throwable, tty); 280 tty->cr(); 281 report_error(str); 282 return NULL; 283 } 284 return k; 285 } 286 return NULL; 287 } 288 289 // Lookup a klass 290 Klass* resolve_klass(const char* klass, TRAPS) { 291 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL); 292 return SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, CHECK_NULL); 293 } 294 295 // Parse the standard tuple of <klass> <name> <signature> 296 Method* parse_method(TRAPS) { 297 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL); 298 Symbol* method_name = parse_symbol(CHECK_NULL); 299 Symbol* method_signature = parse_symbol(CHECK_NULL); 300 Method* m = k->find_method(method_name, method_signature); 301 if (m == NULL) { 302 report_error("can't find method"); 303 } 304 return m; 305 } 306 307 // Process each line of the replay file executing each command until 308 // the file ends. 309 void process(TRAPS) { 310 line_no = 1; 311 int pos = 0; 312 int c = getc(stream); 313 while(c != EOF) { 314 if (pos + 1 >= buffer_length) { 315 int newl = buffer_length * 2; 316 char* newb = NEW_RESOURCE_ARRAY(char, newl); 317 memcpy(newb, buffer, pos); 318 buffer = newb; 319 buffer_length = newl; 320 } 321 if (c == '\n') { 322 // null terminate it, reset the pointer and process the line 323 buffer[pos] = '\0'; 324 buffer_end = pos++; 325 bufptr = buffer; 326 process_command(CHECK); 327 if (had_error()) { 328 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 329 tty->print_cr("%s", buffer); 330 return; 331 } 332 pos = 0; 333 buffer_end = 0; 334 line_no++; 335 } else if (c == '\r') { 336 // skip LF 337 } else { 338 buffer[pos++] = c; 339 } 340 c = getc(stream); 341 } 342 } 343 344 void process_command(TRAPS) { 345 char* cmd = parse_string(); 346 if (cmd == NULL) { 347 return; 348 } 349 if (strcmp("#", cmd) == 0) { 350 // ignore 351 } else if (strcmp("compile", cmd) == 0) { 352 process_compile(CHECK); 353 } else if (strcmp("ciMethod", cmd) == 0) { 354 process_ciMethod(CHECK); 355 } else if (strcmp("ciMethodData", cmd) == 0) { 356 process_ciMethodData(CHECK); 357 } else if (strcmp("staticfield", cmd) == 0) { 358 process_staticfield(CHECK); 359 } else if (strcmp("ciInstanceKlass", cmd) == 0) { 360 process_ciInstanceKlass(CHECK); 361 } else if (strcmp("instanceKlass", cmd) == 0) { 362 process_instanceKlass(CHECK); 363#if INCLUDE_JVMTI 364 } else if (strcmp("JvmtiExport", cmd) == 0) { 365 process_JvmtiExport(CHECK); 366#endif // INCLUDE_JVMTI 367 } else { 368 report_error("unknown command"); 369 } 370 } 371 372 // compile <klass> <name> <signature> <entry_bci> 373 void process_compile(TRAPS) { 374 // methodHandle method; 375 Method* method = parse_method(CHECK); 376 int entry_bci = parse_int("entry_bci"); 377 Klass* k = method->method_holder(); 378 ((InstanceKlass*)k)->initialize(THREAD); 379 if (HAS_PENDING_EXCEPTION) { 380 oop throwable = PENDING_EXCEPTION; 381 java_lang_Throwable::print(throwable, tty); 382 tty->cr(); 383 if (ReplayIgnoreInitErrors) { 384 CLEAR_PENDING_EXCEPTION; 385 ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized); 386 } else { 387 return; 388 } 389 } 390 // Make sure the existence of a prior compile doesn't stop this one 391 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, CompLevel_full_optimization, true) : method->code(); 392 if (nm != NULL) { 393 nm->make_not_entrant(); 394 } 395 replay_state = this; 396 CompileBroker::compile_method(method, entry_bci, CompLevel_full_optimization, 397 methodHandle(), 0, "replay", THREAD); 398 replay_state = NULL; 399 reset(); 400 } 401 402 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 403 // 404 // 405 void process_ciMethod(TRAPS) { 406 Method* method = parse_method(CHECK); 407 ciMethodRecord* rec = new_ciMethod(method); 408 rec->invocation_counter = parse_int("invocation_counter"); 409 rec->backedge_counter = parse_int("backedge_counter"); 410 rec->interpreter_invocation_count = parse_int("interpreter_invocation_count"); 411 rec->interpreter_throwout_count = parse_int("interpreter_throwout_count"); 412 rec->instructions_size = parse_int("instructions_size"); 413 } 414 415 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> 416 void process_ciMethodData(TRAPS) { 417 Method* method = parse_method(CHECK); 418 /* jsut copied from Method, to build interpret data*/ 419 if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) { 420 return; 421 } 422 // methodOopDesc::build_interpreter_method_data(method, CHECK); 423 { 424 // Grab a lock here to prevent multiple 425 // MethodData*s from being created. 426 MutexLocker ml(MethodData_lock, THREAD); 427 if (method->method_data() == NULL) { 428 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 429 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK); 430 method->set_method_data(method_data); 431 } 432 } 433 434 // collect and record all the needed information for later 435 ciMethodDataRecord* rec = new_ciMethodData(method); 436 rec->state = parse_int("state"); 437 rec->current_mileage = parse_int("current_mileage"); 438 439 rec->orig_data = parse_data("orig", rec->orig_data_length); 440 if (rec->orig_data == NULL) { 441 return; 442 } 443 rec->data = parse_intptr_data("data", rec->data_length); 444 if (rec->data == NULL) { 445 return; 446 } 447 if (!parse_tag_and_count("oops", rec->oops_length)) { 448 return; 449 } 450 rec->oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->oops_length); 451 rec->oops_offsets = NEW_RESOURCE_ARRAY(int, rec->oops_length); 452 for (int i = 0; i < rec->oops_length; i++) { 453 int offset = parse_int("offset"); 454 if (had_error()) { 455 return; 456 } 457 Klass* k = parse_klass(CHECK); 458 rec->oops_offsets[i] = offset; 459 rec->oops_handles[i] = (jobject)(new KlassHandle(THREAD, k)); 460 } 461 } 462 463 // instanceKlass <name> 464 // 465 // Loads and initializes the klass 'name'. This can be used to 466 // create particular class loading environments 467 void process_instanceKlass(TRAPS) { 468 // just load the referenced class 469 Klass* k = parse_klass(CHECK); 470 } 471 472 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ... 473 // 474 // Load the klass 'name' and link or initialize it. Verify that the 475 // constant pool is the same length as 'length' and make sure the 476 // constant pool tags are in the same state. 477 void process_ciInstanceKlass(TRAPS) { 478 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 479 int is_linked = parse_int("is_linked"); 480 int is_initialized = parse_int("is_initialized"); 481 int length = parse_int("length"); 482 if (is_initialized) { 483 k->initialize(THREAD); 484 if (HAS_PENDING_EXCEPTION) { 485 oop throwable = PENDING_EXCEPTION; 486 java_lang_Throwable::print(throwable, tty); 487 tty->cr(); 488 if (ReplayIgnoreInitErrors) { 489 CLEAR_PENDING_EXCEPTION; 490 k->set_init_state(InstanceKlass::fully_initialized); 491 } else { 492 return; 493 } 494 } 495 } else if (is_linked) { 496 k->link_class(CHECK); 497 } 498 ConstantPool* cp = k->constants(); 499 if (length != cp->length()) { 500 report_error("constant pool length mismatch: wrong class files?"); 501 return; 502 } 503 504 int parsed_two_word = 0; 505 for (int i = 1; i < length; i++) { 506 int tag = parse_int("tag"); 507 if (had_error()) { 508 return; 509 } 510 switch (cp->tag_at(i).value()) { 511 case JVM_CONSTANT_UnresolvedClass: { 512 if (tag == JVM_CONSTANT_Class) { 513 tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i); 514 Klass* k = cp->klass_at(i, CHECK); 515 } 516 break; 517 } 518 case JVM_CONSTANT_Long: 519 case JVM_CONSTANT_Double: 520 parsed_two_word = i + 1; 521 522 case JVM_CONSTANT_ClassIndex: 523 case JVM_CONSTANT_StringIndex: 524 case JVM_CONSTANT_String: 525 case JVM_CONSTANT_UnresolvedClassInError: 526 case JVM_CONSTANT_Fieldref: 527 case JVM_CONSTANT_Methodref: 528 case JVM_CONSTANT_InterfaceMethodref: 529 case JVM_CONSTANT_NameAndType: 530 case JVM_CONSTANT_Utf8: 531 case JVM_CONSTANT_Integer: 532 case JVM_CONSTANT_Float: 533 if (tag != cp->tag_at(i).value()) { 534 report_error("tag mismatch: wrong class files?"); 535 return; 536 } 537 break; 538 539 case JVM_CONSTANT_Class: 540 if (tag == JVM_CONSTANT_Class) { 541 } else if (tag == JVM_CONSTANT_UnresolvedClass) { 542 tty->print_cr("Warning: entry was unresolved in the replay data"); 543 } else { 544 report_error("Unexpected tag"); 545 return; 546 } 547 break; 548 549 case 0: 550 if (parsed_two_word == i) continue; 551 552 default: 553 fatal(err_msg_res("Unexpected tag: %d", cp->tag_at(i).value())); 554 break; 555 } 556 557 } 558 } 559 560 // Initialize a class and fill in the value for a static field. 561 // This is useful when the compile was dependent on the value of 562 // static fields but it's impossible to properly rerun the static 563 // initiailizer. 564 void process_staticfield(TRAPS) { 565 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 566 567 if (ReplaySuppressInitializers == 0 || 568 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) { 569 return; 570 } 571 572 assert(k->is_initialized(), "must be"); 573 574 const char* field_name = parse_escaped_string();; 575 const char* field_signature = parse_string(); 576 fieldDescriptor fd; 577 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK); 578 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 579 if (!k->find_local_field(name, sig, &fd) || 580 !fd.is_static() || 581 fd.has_initial_value()) { 582 report_error(field_name); 583 return; 584 } 585 586 oop java_mirror = k->java_mirror(); 587 if (field_signature[0] == '[') { 588 int length = parse_int("array length"); 589 oop value = NULL; 590 591 if (field_signature[1] == '[') { 592 // multi dimensional array 593 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 594 int rank = 0; 595 while (field_signature[rank] == '[') { 596 rank++; 597 } 598 int* dims = NEW_RESOURCE_ARRAY(int, rank); 599 dims[0] = length; 600 for (int i = 1; i < rank; i++) { 601 dims[i] = 1; // These aren't relevant to the compiler 602 } 603 value = kelem->multi_allocate(rank, dims, CHECK); 604 } else { 605 if (strcmp(field_signature, "[B") == 0) { 606 value = oopFactory::new_byteArray(length, CHECK); 607 } else if (strcmp(field_signature, "[Z") == 0) { 608 value = oopFactory::new_boolArray(length, CHECK); 609 } else if (strcmp(field_signature, "[C") == 0) { 610 value = oopFactory::new_charArray(length, CHECK); 611 } else if (strcmp(field_signature, "[S") == 0) { 612 value = oopFactory::new_shortArray(length, CHECK); 613 } else if (strcmp(field_signature, "[F") == 0) { 614 value = oopFactory::new_singleArray(length, CHECK); 615 } else if (strcmp(field_signature, "[D") == 0) { 616 value = oopFactory::new_doubleArray(length, CHECK); 617 } else if (strcmp(field_signature, "[I") == 0) { 618 value = oopFactory::new_intArray(length, CHECK); 619 } else if (strcmp(field_signature, "[J") == 0) { 620 value = oopFactory::new_longArray(length, CHECK); 621 } else if (field_signature[0] == '[' && field_signature[1] == 'L') { 622 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK); 623 value = oopFactory::new_objArray(kelem(), length, CHECK); 624 } else { 625 report_error("unhandled array staticfield"); 626 } 627 } 628 java_mirror->obj_field_put(fd.offset(), value); 629 } else { 630 const char* string_value = parse_escaped_string(); 631 if (strcmp(field_signature, "I") == 0) { 632 int value = atoi(string_value); 633 java_mirror->int_field_put(fd.offset(), value); 634 } else if (strcmp(field_signature, "B") == 0) { 635 int value = atoi(string_value); 636 java_mirror->byte_field_put(fd.offset(), value); 637 } else if (strcmp(field_signature, "C") == 0) { 638 int value = atoi(string_value); 639 java_mirror->char_field_put(fd.offset(), value); 640 } else if (strcmp(field_signature, "S") == 0) { 641 int value = atoi(string_value); 642 java_mirror->short_field_put(fd.offset(), value); 643 } else if (strcmp(field_signature, "Z") == 0) { 644 int value = atol(string_value); 645 java_mirror->bool_field_put(fd.offset(), value); 646 } else if (strcmp(field_signature, "J") == 0) { 647 jlong value; 648 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) { 649 fprintf(stderr, "Error parsing long: %s\n", string_value); 650 return; 651 } 652 java_mirror->long_field_put(fd.offset(), value); 653 } else if (strcmp(field_signature, "F") == 0) { 654 float value = atof(string_value); 655 java_mirror->float_field_put(fd.offset(), value); 656 } else if (strcmp(field_signature, "D") == 0) { 657 double value = atof(string_value); 658 java_mirror->double_field_put(fd.offset(), value); 659 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 660 Handle value = java_lang_String::create_from_str(string_value, CHECK); 661 java_mirror->obj_field_put(fd.offset(), value()); 662 } else if (field_signature[0] == 'L') { 663 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 664 KlassHandle kelem = resolve_klass(field_signature, CHECK); 665 oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK); 666 java_mirror->obj_field_put(fd.offset(), value); 667 } else { 668 report_error("unhandled staticfield"); 669 } 670 } 671 } 672 673#if INCLUDE_JVMTI 674 void process_JvmtiExport(TRAPS) { 675 const char* field = parse_string(); 676 bool value = parse_int("JvmtiExport flag") != 0; 677 if (strcmp(field, "can_access_local_variables") == 0) { 678 JvmtiExport::set_can_access_local_variables(value); 679 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 680 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 681 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 682 JvmtiExport::set_can_post_on_exceptions(value); 683 } else { 684 report_error("Unrecognized JvmtiExport directive"); 685 } 686 } 687#endif // INCLUDE_JVMTI 688 689 // Create and initialize a record for a ciMethod 690 ciMethodRecord* new_ciMethod(Method* method) { 691 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 692 rec->klass = method->method_holder()->name()->as_utf8(); 693 rec->method = method->name()->as_utf8(); 694 rec->signature = method->signature()->as_utf8(); 695 ci_method_records.append(rec); 696 return rec; 697 } 698 699 // Lookup data for a ciMethod 700 ciMethodRecord* find_ciMethodRecord(Method* method) { 701 const char* klass_name = method->method_holder()->name()->as_utf8(); 702 const char* method_name = method->name()->as_utf8(); 703 const char* signature = method->signature()->as_utf8(); 704 for (int i = 0; i < ci_method_records.length(); i++) { 705 ciMethodRecord* rec = ci_method_records.at(i); 706 if (strcmp(rec->klass, klass_name) == 0 && 707 strcmp(rec->method, method_name) == 0 && 708 strcmp(rec->signature, signature) == 0) { 709 return rec; 710 } 711 } 712 return NULL; 713 } 714 715 // Create and initialize a record for a ciMethodData 716 ciMethodDataRecord* new_ciMethodData(Method* method) { 717 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 718 rec->klass = method->method_holder()->name()->as_utf8(); 719 rec->method = method->name()->as_utf8(); 720 rec->signature = method->signature()->as_utf8(); 721 ci_method_data_records.append(rec); 722 return rec; 723 } 724 725 // Lookup data for a ciMethodData 726 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 727 const char* klass_name = method->method_holder()->name()->as_utf8(); 728 const char* method_name = method->name()->as_utf8(); 729 const char* signature = method->signature()->as_utf8(); 730 for (int i = 0; i < ci_method_data_records.length(); i++) { 731 ciMethodDataRecord* rec = ci_method_data_records.at(i); 732 if (strcmp(rec->klass, klass_name) == 0 && 733 strcmp(rec->method, method_name) == 0 && 734 strcmp(rec->signature, signature) == 0) { 735 return rec; 736 } 737 } 738 return NULL; 739 } 740 741 const char* error_message() { 742 return _error_message; 743 } 744 745 void reset() { 746 _error_message = NULL; 747 ci_method_records.clear(); 748 ci_method_data_records.clear(); 749 } 750 751 // Take an ascii string contain \u#### escapes and convert it to utf8 752 // in place. 753 static void unescape_string(char* value) { 754 char* from = value; 755 char* to = value; 756 while (*from != '\0') { 757 if (*from != '\\') { 758 *from++ = *to++; 759 } else { 760 switch (from[1]) { 761 case 'u': { 762 from += 2; 763 jchar value=0; 764 for (int i=0; i<4; i++) { 765 char c = *from++; 766 switch (c) { 767 case '0': case '1': case '2': case '3': case '4': 768 case '5': case '6': case '7': case '8': case '9': 769 value = (value << 4) + c - '0'; 770 break; 771 case 'a': case 'b': case 'c': 772 case 'd': case 'e': case 'f': 773 value = (value << 4) + 10 + c - 'a'; 774 break; 775 case 'A': case 'B': case 'C': 776 case 'D': case 'E': case 'F': 777 value = (value << 4) + 10 + c - 'A'; 778 break; 779 default: 780 ShouldNotReachHere(); 781 } 782 } 783 UNICODE::convert_to_utf8(&value, 1, to); 784 to++; 785 break; 786 } 787 case 't': *to++ = '\t'; from += 2; break; 788 case 'n': *to++ = '\n'; from += 2; break; 789 case 'r': *to++ = '\r'; from += 2; break; 790 case 'f': *to++ = '\f'; from += 2; break; 791 default: 792 ShouldNotReachHere(); 793 } 794 } 795 } 796 *from = *to; 797 } 798}; 799 800void ciReplay::replay(TRAPS) { 801 int exit_code = replay_impl(THREAD); 802 803 Threads::destroy_vm(); 804 805 vm_exit(exit_code); 806} 807 808int ciReplay::replay_impl(TRAPS) { 809 HandleMark hm; 810 ResourceMark rm; 811 // Make sure we don't run with background compilation 812 BackgroundCompilation = false; 813 814 if (ReplaySuppressInitializers > 2) { 815 // ReplaySuppressInitializers > 2 means that we want to allow 816 // normal VM bootstrap but once we get into the replay itself 817 // don't allow any intializers to be run. 818 ReplaySuppressInitializers = 1; 819 } 820 821 if (FLAG_IS_DEFAULT(ReplayDataFile)) { 822 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt)."); 823 return 1; 824 } 825 826 // Load and parse the replay data 827 CompileReplay rp(ReplayDataFile, THREAD); 828 int exit_code = 0; 829 if (rp.can_replay()) { 830 rp.process(THREAD); 831 } else { 832 exit_code = 1; 833 return exit_code; 834 } 835 836 if (HAS_PENDING_EXCEPTION) { 837 oop throwable = PENDING_EXCEPTION; 838 CLEAR_PENDING_EXCEPTION; 839 java_lang_Throwable::print(throwable, tty); 840 tty->cr(); 841 java_lang_Throwable::print_stack_trace(throwable, tty); 842 tty->cr(); 843 exit_code = 2; 844 } 845 846 if (rp.had_error()) { 847 tty->print_cr("Failed on %s", rp.error_message()); 848 exit_code = 1; 849 } 850 return exit_code; 851} 852 853 854void ciReplay::initialize(ciMethodData* m) { 855 if (replay_state == NULL) { 856 return; 857 } 858 859 ASSERT_IN_VM; 860 ResourceMark rm; 861 862 Method* method = m->get_MethodData()->method(); 863 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 864 if (rec == NULL) { 865 // This indicates some mismatch with the original environment and 866 // the replay environment though it's not always enough to 867 // interfere with reproducing a bug 868 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 869 method->print_name(tty); 870 tty->cr(); 871 } else { 872 m->_state = rec->state; 873 m->_current_mileage = rec->current_mileage; 874 if (rec->data_length != 0) { 875 assert(m->_data_size == rec->data_length * (int)sizeof(rec->data[0]), "must agree"); 876 877 // Write the correct ciObjects back into the profile data 878 ciEnv* env = ciEnv::current(); 879 for (int i = 0; i < rec->oops_length; i++) { 880 KlassHandle *h = (KlassHandle *)rec->oops_handles[i]; 881 *(ciMetadata**)(rec->data + rec->oops_offsets[i]) = 882 env->get_metadata((*h)()); 883 } 884 // Copy the updated profile data into place as intptr_ts 885#ifdef _LP64 886 Copy::conjoint_jlongs_atomic((jlong *)rec->data, (jlong *)m->_data, rec->data_length); 887#else 888 Copy::conjoint_jints_atomic((jint *)rec->data, (jint *)m->_data, rec->data_length); 889#endif 890 } 891 892 // copy in the original header 893 Copy::conjoint_jbytes(rec->orig_data, (char*)&m->_orig, rec->orig_data_length); 894 } 895} 896 897 898bool ciReplay::should_not_inline(ciMethod* method) { 899 if (replay_state == NULL) { 900 return false; 901 } 902 903 VM_ENTRY_MARK; 904 // ciMethod without a record shouldn't be inlined. 905 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 906} 907 908 909void ciReplay::initialize(ciMethod* m) { 910 if (replay_state == NULL) { 911 return; 912 } 913 914 ASSERT_IN_VM; 915 ResourceMark rm; 916 917 Method* method = m->get_Method(); 918 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 919 if (rec == NULL) { 920 // This indicates some mismatch with the original environment and 921 // the replay environment though it's not always enough to 922 // interfere with reproducing a bug 923 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 924 method->print_name(tty); 925 tty->cr(); 926 } else { 927 EXCEPTION_CONTEXT; 928 MethodCounters* mcs = method->method_counters(); 929 // m->_instructions_size = rec->instructions_size; 930 m->_instructions_size = -1; 931 m->_interpreter_invocation_count = rec->interpreter_invocation_count; 932 m->_interpreter_throwout_count = rec->interpreter_throwout_count; 933 if (mcs == NULL) { 934 mcs = Method::build_method_counters(method, CHECK_AND_CLEAR); 935 } 936 mcs->invocation_counter()->_counter = rec->invocation_counter; 937 mcs->backedge_counter()->_counter = rec->backedge_counter; 938 } 939} 940 941bool ciReplay::is_loaded(Method* method) { 942 if (replay_state == NULL) { 943 return true; 944 } 945 946 ASSERT_IN_VM; 947 ResourceMark rm; 948 949 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 950 return rec != NULL; 951} 952#endif // PRODUCT 953