ciReplay.cpp revision 4107:db9981fd3124
1/* Copyright (c) 2012, 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, "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 assert(false, "error"); 331 return; 332 } 333 pos = 0; 334 buffer_end = 0; 335 line_no++; 336 } else if (c == '\r') { 337 // skip LF 338 } else { 339 buffer[pos++] = c; 340 } 341 c = getc(stream); 342 } 343 } 344 345 void process_command(TRAPS) { 346 char* cmd = parse_string(); 347 if (cmd == NULL) { 348 return; 349 } 350 if (strcmp("#", cmd) == 0) { 351 // ignore 352 } else if (strcmp("compile", cmd) == 0) { 353 process_compile(CHECK); 354 } else if (strcmp("ciMethod", cmd) == 0) { 355 process_ciMethod(CHECK); 356 } else if (strcmp("ciMethodData", cmd) == 0) { 357 process_ciMethodData(CHECK); 358 } else if (strcmp("staticfield", cmd) == 0) { 359 process_staticfield(CHECK); 360 } else if (strcmp("ciInstanceKlass", cmd) == 0) { 361 process_ciInstanceKlass(CHECK); 362 } else if (strcmp("instanceKlass", cmd) == 0) { 363 process_instanceKlass(CHECK); 364#if INCLUDE_JVMTI 365 } else if (strcmp("JvmtiExport", cmd) == 0) { 366 process_JvmtiExport(CHECK); 367#endif // INCLUDE_JVMTI 368 } else { 369 report_error("unknown command"); 370 } 371 } 372 373 // compile <klass> <name> <signature> <entry_bci> 374 void process_compile(TRAPS) { 375 // methodHandle method; 376 Method* method = parse_method(CHECK); 377 int entry_bci = parse_int("entry_bci"); 378 Klass* k = method->method_holder(); 379 ((InstanceKlass*)k)->initialize(THREAD); 380 if (HAS_PENDING_EXCEPTION) { 381 oop throwable = PENDING_EXCEPTION; 382 java_lang_Throwable::print(throwable, tty); 383 tty->cr(); 384 if (ReplayIgnoreInitErrors) { 385 CLEAR_PENDING_EXCEPTION; 386 ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized); 387 } else { 388 return; 389 } 390 } 391 // Make sure the existence of a prior compile doesn't stop this one 392 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, CompLevel_full_optimization, true) : method->code(); 393 if (nm != NULL) { 394 nm->make_not_entrant(); 395 } 396 replay_state = this; 397 CompileBroker::compile_method(method, entry_bci, CompLevel_full_optimization, 398 methodHandle(), 0, "replay", THREAD); 399 replay_state = NULL; 400 reset(); 401 } 402 403 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 404 // 405 // 406 void process_ciMethod(TRAPS) { 407 Method* method = parse_method(CHECK); 408 ciMethodRecord* rec = new_ciMethod(method); 409 rec->invocation_counter = parse_int("invocation_counter"); 410 rec->backedge_counter = parse_int("backedge_counter"); 411 rec->interpreter_invocation_count = parse_int("interpreter_invocation_count"); 412 rec->interpreter_throwout_count = parse_int("interpreter_throwout_count"); 413 rec->instructions_size = parse_int("instructions_size"); 414 } 415 416 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> 417 void process_ciMethodData(TRAPS) { 418 Method* method = parse_method(CHECK); 419 /* jsut copied from Method, to build interpret data*/ 420 if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) { 421 return; 422 } 423 // methodOopDesc::build_interpreter_method_data(method, CHECK); 424 { 425 // Grab a lock here to prevent multiple 426 // MethodData*s from being created. 427 MutexLocker ml(MethodData_lock, THREAD); 428 if (method->method_data() == NULL) { 429 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 430 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK); 431 method->set_method_data(method_data); 432 } 433 } 434 435 // collect and record all the needed information for later 436 ciMethodDataRecord* rec = new_ciMethodData(method); 437 rec->state = parse_int("state"); 438 rec->current_mileage = parse_int("current_mileage"); 439 440 rec->orig_data = parse_data("orig", rec->orig_data_length); 441 if (rec->orig_data == NULL) { 442 return; 443 } 444 rec->data = parse_intptr_data("data", rec->data_length); 445 if (rec->data == NULL) { 446 return; 447 } 448 if (!parse_tag_and_count("oops", rec->oops_length)) { 449 return; 450 } 451 rec->oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->oops_length); 452 rec->oops_offsets = NEW_RESOURCE_ARRAY(int, rec->oops_length); 453 for (int i = 0; i < rec->oops_length; i++) { 454 int offset = parse_int("offset"); 455 if (had_error()) { 456 return; 457 } 458 Klass* k = parse_klass(CHECK); 459 rec->oops_offsets[i] = offset; 460 rec->oops_handles[i] = (jobject)(new KlassHandle(THREAD, k)); 461 } 462 } 463 464 // instanceKlass <name> 465 // 466 // Loads and initializes the klass 'name'. This can be used to 467 // create particular class loading environments 468 void process_instanceKlass(TRAPS) { 469 // just load the referenced class 470 Klass* k = parse_klass(CHECK); 471 } 472 473 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ... 474 // 475 // Load the klass 'name' and link or initialize it. Verify that the 476 // constant pool is the same length as 'length' and make sure the 477 // constant pool tags are in the same state. 478 void process_ciInstanceKlass(TRAPS) { 479 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 480 int is_linked = parse_int("is_linked"); 481 int is_initialized = parse_int("is_initialized"); 482 int length = parse_int("length"); 483 if (is_initialized) { 484 k->initialize(THREAD); 485 if (HAS_PENDING_EXCEPTION) { 486 oop throwable = PENDING_EXCEPTION; 487 java_lang_Throwable::print(throwable, tty); 488 tty->cr(); 489 if (ReplayIgnoreInitErrors) { 490 CLEAR_PENDING_EXCEPTION; 491 k->set_init_state(InstanceKlass::fully_initialized); 492 } else { 493 return; 494 } 495 } 496 } else if (is_linked) { 497 k->link_class(CHECK); 498 } 499 ConstantPool* cp = k->constants(); 500 if (length != cp->length()) { 501 report_error("constant pool length mismatch: wrong class files?"); 502 return; 503 } 504 505 int parsed_two_word = 0; 506 for (int i = 1; i < length; i++) { 507 int tag = parse_int("tag"); 508 if (had_error()) { 509 return; 510 } 511 switch (cp->tag_at(i).value()) { 512 case JVM_CONSTANT_UnresolvedClass: { 513 if (tag == JVM_CONSTANT_Class) { 514 tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i); 515 Klass* k = cp->klass_at(i, CHECK); 516 } 517 break; 518 } 519 case JVM_CONSTANT_Long: 520 case JVM_CONSTANT_Double: 521 parsed_two_word = i + 1; 522 523 case JVM_CONSTANT_ClassIndex: 524 case JVM_CONSTANT_StringIndex: 525 case JVM_CONSTANT_String: 526 case JVM_CONSTANT_UnresolvedClassInError: 527 case JVM_CONSTANT_Fieldref: 528 case JVM_CONSTANT_Methodref: 529 case JVM_CONSTANT_InterfaceMethodref: 530 case JVM_CONSTANT_NameAndType: 531 case JVM_CONSTANT_Utf8: 532 case JVM_CONSTANT_Integer: 533 case JVM_CONSTANT_Float: 534 if (tag != cp->tag_at(i).value()) { 535 report_error("tag mismatch: wrong class files?"); 536 return; 537 } 538 break; 539 540 case JVM_CONSTANT_Class: 541 if (tag == JVM_CONSTANT_Class) { 542 } else if (tag == JVM_CONSTANT_UnresolvedClass) { 543 tty->print_cr("Warning: entry was unresolved in the replay data"); 544 } else { 545 report_error("Unexpected tag"); 546 return; 547 } 548 break; 549 550 case 0: 551 if (parsed_two_word == i) continue; 552 553 default: 554 ShouldNotReachHere(); 555 break; 556 } 557 558 } 559 } 560 561 // Initialize a class and fill in the value for a static field. 562 // This is useful when the compile was dependent on the value of 563 // static fields but it's impossible to properly rerun the static 564 // initiailizer. 565 void process_staticfield(TRAPS) { 566 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 567 568 if (ReplaySuppressInitializers == 0 || 569 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) { 570 return; 571 } 572 573 assert(k->is_initialized(), "must be"); 574 575 const char* field_name = parse_escaped_string();; 576 const char* field_signature = parse_string(); 577 fieldDescriptor fd; 578 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK); 579 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 580 if (!k->find_local_field(name, sig, &fd) || 581 !fd.is_static() || 582 fd.has_initial_value()) { 583 report_error(field_name); 584 return; 585 } 586 587 oop java_mirror = k->java_mirror(); 588 if (field_signature[0] == '[') { 589 int length = parse_int("array length"); 590 oop value = NULL; 591 592 if (field_signature[1] == '[') { 593 // multi dimensional array 594 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 595 int rank = 0; 596 while (field_signature[rank] == '[') { 597 rank++; 598 } 599 int* dims = NEW_RESOURCE_ARRAY(int, rank); 600 dims[0] = length; 601 for (int i = 1; i < rank; i++) { 602 dims[i] = 1; // These aren't relevant to the compiler 603 } 604 value = kelem->multi_allocate(rank, dims, CHECK); 605 } else { 606 if (strcmp(field_signature, "[B") == 0) { 607 value = oopFactory::new_byteArray(length, CHECK); 608 } else if (strcmp(field_signature, "[Z") == 0) { 609 value = oopFactory::new_boolArray(length, CHECK); 610 } else if (strcmp(field_signature, "[C") == 0) { 611 value = oopFactory::new_charArray(length, CHECK); 612 } else if (strcmp(field_signature, "[S") == 0) { 613 value = oopFactory::new_shortArray(length, CHECK); 614 } else if (strcmp(field_signature, "[F") == 0) { 615 value = oopFactory::new_singleArray(length, CHECK); 616 } else if (strcmp(field_signature, "[D") == 0) { 617 value = oopFactory::new_doubleArray(length, CHECK); 618 } else if (strcmp(field_signature, "[I") == 0) { 619 value = oopFactory::new_intArray(length, CHECK); 620 } else if (strcmp(field_signature, "[J") == 0) { 621 value = oopFactory::new_longArray(length, CHECK); 622 } else if (field_signature[0] == '[' && field_signature[1] == 'L') { 623 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK); 624 value = oopFactory::new_objArray(kelem(), length, CHECK); 625 } else { 626 report_error("unhandled array staticfield"); 627 } 628 } 629 java_mirror->obj_field_put(fd.offset(), value); 630 } else { 631 const char* string_value = parse_escaped_string(); 632 if (strcmp(field_signature, "I") == 0) { 633 int value = atoi(string_value); 634 java_mirror->int_field_put(fd.offset(), value); 635 } else if (strcmp(field_signature, "B") == 0) { 636 int value = atoi(string_value); 637 java_mirror->byte_field_put(fd.offset(), value); 638 } else if (strcmp(field_signature, "C") == 0) { 639 int value = atoi(string_value); 640 java_mirror->char_field_put(fd.offset(), value); 641 } else if (strcmp(field_signature, "S") == 0) { 642 int value = atoi(string_value); 643 java_mirror->short_field_put(fd.offset(), value); 644 } else if (strcmp(field_signature, "Z") == 0) { 645 int value = atol(string_value); 646 java_mirror->bool_field_put(fd.offset(), value); 647 } else if (strcmp(field_signature, "J") == 0) { 648 jlong value; 649 if (sscanf(string_value, INT64_FORMAT, &value) != 1) { 650 fprintf(stderr, "Error parsing long: %s\n", string_value); 651 return; 652 } 653 java_mirror->long_field_put(fd.offset(), value); 654 } else if (strcmp(field_signature, "F") == 0) { 655 float value = atof(string_value); 656 java_mirror->float_field_put(fd.offset(), value); 657 } else if (strcmp(field_signature, "D") == 0) { 658 double value = atof(string_value); 659 java_mirror->double_field_put(fd.offset(), value); 660 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 661 Handle value = java_lang_String::create_from_str(string_value, CHECK); 662 java_mirror->obj_field_put(fd.offset(), value()); 663 } else if (field_signature[0] == 'L') { 664 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 665 KlassHandle kelem = resolve_klass(field_signature, CHECK); 666 oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK); 667 java_mirror->obj_field_put(fd.offset(), value); 668 } else { 669 report_error("unhandled staticfield"); 670 } 671 } 672 } 673 674#if INCLUDE_JVMTI 675 void process_JvmtiExport(TRAPS) { 676 const char* field = parse_string(); 677 bool value = parse_int("JvmtiExport flag") != 0; 678 if (strcmp(field, "can_access_local_variables") == 0) { 679 JvmtiExport::set_can_access_local_variables(value); 680 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 681 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 682 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 683 JvmtiExport::set_can_post_on_exceptions(value); 684 } else { 685 report_error("Unrecognized JvmtiExport directive"); 686 } 687 } 688#endif // INCLUDE_JVMTI 689 690 // Create and initialize a record for a ciMethod 691 ciMethodRecord* new_ciMethod(Method* method) { 692 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 693 rec->klass = method->method_holder()->name()->as_utf8(); 694 rec->method = method->name()->as_utf8(); 695 rec->signature = method->signature()->as_utf8(); 696 ci_method_records.append(rec); 697 return rec; 698 } 699 700 // Lookup data for a ciMethod 701 ciMethodRecord* find_ciMethodRecord(Method* method) { 702 const char* klass_name = method->method_holder()->name()->as_utf8(); 703 const char* method_name = method->name()->as_utf8(); 704 const char* signature = method->signature()->as_utf8(); 705 for (int i = 0; i < ci_method_records.length(); i++) { 706 ciMethodRecord* rec = ci_method_records.at(i); 707 if (strcmp(rec->klass, klass_name) == 0 && 708 strcmp(rec->method, method_name) == 0 && 709 strcmp(rec->signature, signature) == 0) { 710 return rec; 711 } 712 } 713 return NULL; 714 } 715 716 // Create and initialize a record for a ciMethodData 717 ciMethodDataRecord* new_ciMethodData(Method* method) { 718 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 719 rec->klass = method->method_holder()->name()->as_utf8(); 720 rec->method = method->name()->as_utf8(); 721 rec->signature = method->signature()->as_utf8(); 722 ci_method_data_records.append(rec); 723 return rec; 724 } 725 726 // Lookup data for a ciMethodData 727 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 728 const char* klass_name = method->method_holder()->name()->as_utf8(); 729 const char* method_name = method->name()->as_utf8(); 730 const char* signature = method->signature()->as_utf8(); 731 for (int i = 0; i < ci_method_data_records.length(); i++) { 732 ciMethodDataRecord* rec = ci_method_data_records.at(i); 733 if (strcmp(rec->klass, klass_name) == 0 && 734 strcmp(rec->method, method_name) == 0 && 735 strcmp(rec->signature, signature) == 0) { 736 return rec; 737 } 738 } 739 return NULL; 740 } 741 742 const char* error_message() { 743 return _error_message; 744 } 745 746 void reset() { 747 _error_message = NULL; 748 ci_method_records.clear(); 749 ci_method_data_records.clear(); 750 } 751 752 // Take an ascii string contain \u#### escapes and convert it to utf8 753 // in place. 754 static void unescape_string(char* value) { 755 char* from = value; 756 char* to = value; 757 while (*from != '\0') { 758 if (*from != '\\') { 759 *from++ = *to++; 760 } else { 761 switch (from[1]) { 762 case 'u': { 763 from += 2; 764 jchar value=0; 765 for (int i=0; i<4; i++) { 766 char c = *from++; 767 switch (c) { 768 case '0': case '1': case '2': case '3': case '4': 769 case '5': case '6': case '7': case '8': case '9': 770 value = (value << 4) + c - '0'; 771 break; 772 case 'a': case 'b': case 'c': 773 case 'd': case 'e': case 'f': 774 value = (value << 4) + 10 + c - 'a'; 775 break; 776 case 'A': case 'B': case 'C': 777 case 'D': case 'E': case 'F': 778 value = (value << 4) + 10 + c - 'A'; 779 break; 780 default: 781 ShouldNotReachHere(); 782 } 783 } 784 UNICODE::convert_to_utf8(&value, 1, to); 785 to++; 786 break; 787 } 788 case 't': *to++ = '\t'; from += 2; break; 789 case 'n': *to++ = '\n'; from += 2; break; 790 case 'r': *to++ = '\r'; from += 2; break; 791 case 'f': *to++ = '\f'; from += 2; break; 792 default: 793 ShouldNotReachHere(); 794 } 795 } 796 } 797 *from = *to; 798 } 799}; 800 801void ciReplay::replay(TRAPS) { 802 int exit_code = replay_impl(THREAD); 803 804 Threads::destroy_vm(); 805 806 vm_exit(exit_code); 807} 808 809int ciReplay::replay_impl(TRAPS) { 810 HandleMark hm; 811 ResourceMark rm; 812 // Make sure we don't run with background compilation 813 BackgroundCompilation = false; 814 815 if (ReplaySuppressInitializers > 2) { 816 // ReplaySuppressInitializers > 2 means that we want to allow 817 // normal VM bootstrap but once we get into the replay itself 818 // don't allow any intializers to be run. 819 ReplaySuppressInitializers = 1; 820 } 821 822 // Load and parse the replay data 823 CompileReplay rp(ReplayDataFile, THREAD); 824 int exit_code = 0; 825 if (rp.can_replay()) { 826 rp.process(THREAD); 827 } else { 828 exit_code = 1; 829 return exit_code; 830 } 831 832 if (HAS_PENDING_EXCEPTION) { 833 oop throwable = PENDING_EXCEPTION; 834 CLEAR_PENDING_EXCEPTION; 835 java_lang_Throwable::print(throwable, tty); 836 tty->cr(); 837 java_lang_Throwable::print_stack_trace(throwable, tty); 838 tty->cr(); 839 exit_code = 2; 840 } 841 842 if (rp.had_error()) { 843 tty->print_cr("Failed on %s", rp.error_message()); 844 exit_code = 1; 845 } 846 return exit_code; 847} 848 849 850void ciReplay::initialize(ciMethodData* m) { 851 if (replay_state == NULL) { 852 return; 853 } 854 855 ASSERT_IN_VM; 856 ResourceMark rm; 857 858 Method* method = m->get_MethodData()->method(); 859 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 860 if (rec == NULL) { 861 // This indicates some mismatch with the original environment and 862 // the replay environment though it's not always enough to 863 // interfere with reproducing a bug 864 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 865 method->print_name(tty); 866 tty->cr(); 867 } else { 868 m->_state = rec->state; 869 m->_current_mileage = rec->current_mileage; 870 if (rec->data_length != 0) { 871 assert(m->_data_size == rec->data_length * (int)sizeof(rec->data[0]), "must agree"); 872 873 // Write the correct ciObjects back into the profile data 874 ciEnv* env = ciEnv::current(); 875 for (int i = 0; i < rec->oops_length; i++) { 876 KlassHandle *h = (KlassHandle *)rec->oops_handles[i]; 877 *(ciMetadata**)(rec->data + rec->oops_offsets[i]) = 878 env->get_metadata((*h)()); 879 } 880 // Copy the updated profile data into place as intptr_ts 881#ifdef _LP64 882 Copy::conjoint_jlongs_atomic((jlong *)rec->data, (jlong *)m->_data, rec->data_length); 883#else 884 Copy::conjoint_jints_atomic((jint *)rec->data, (jint *)m->_data, rec->data_length); 885#endif 886 } 887 888 // copy in the original header 889 Copy::conjoint_jbytes(rec->orig_data, (char*)&m->_orig, rec->orig_data_length); 890 } 891} 892 893 894bool ciReplay::should_not_inline(ciMethod* method) { 895 if (replay_state == NULL) { 896 return false; 897 } 898 899 VM_ENTRY_MARK; 900 // ciMethod without a record shouldn't be inlined. 901 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 902} 903 904 905void ciReplay::initialize(ciMethod* m) { 906 if (replay_state == NULL) { 907 return; 908 } 909 910 ASSERT_IN_VM; 911 ResourceMark rm; 912 913 Method* method = m->get_Method(); 914 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 915 if (rec == NULL) { 916 // This indicates some mismatch with the original environment and 917 // the replay environment though it's not always enough to 918 // interfere with reproducing a bug 919 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 920 method->print_name(tty); 921 tty->cr(); 922 } else { 923 // m->_instructions_size = rec->instructions_size; 924 m->_instructions_size = -1; 925 m->_interpreter_invocation_count = rec->interpreter_invocation_count; 926 m->_interpreter_throwout_count = rec->interpreter_throwout_count; 927 method->invocation_counter()->_counter = rec->invocation_counter; 928 method->backedge_counter()->_counter = rec->backedge_counter; 929 } 930} 931 932bool ciReplay::is_loaded(Method* method) { 933 if (replay_state == NULL) { 934 return true; 935 } 936 937 ASSERT_IN_VM; 938 ResourceMark rm; 939 940 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 941 return rec != NULL; 942} 943#endif // PRODUCT 944