ciReplay.cpp revision 5014:1b6395189726
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 // validation of comp_level 373 bool is_valid_comp_level(int comp_level) { 374 const int msg_len = 256; 375 char* msg = NULL; 376 if (!is_compile(comp_level)) { 377 msg = NEW_RESOURCE_ARRAY(char, msg_len); 378 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level); 379 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) { 380 msg = NEW_RESOURCE_ARRAY(char, msg_len); 381 switch (comp_level) { 382 case CompLevel_simple: 383 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level); 384 break; 385 case CompLevel_full_optimization: 386 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level); 387 break; 388 default: 389 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level); 390 } 391 } 392 if (msg != NULL) { 393 report_error(msg); 394 return false; 395 } 396 return true; 397 } 398 399 // compile <klass> <name> <signature> <entry_bci> <comp_level> 400 void process_compile(TRAPS) { 401 Method* method = parse_method(CHECK); 402 if (had_error()) return; 403 int entry_bci = parse_int("entry_bci"); 404 const char* comp_level_label = "comp_level"; 405 int comp_level = parse_int(comp_level_label); 406 // old version w/o comp_level 407 if (had_error() && (error_message() == comp_level_label)) { 408 comp_level = CompLevel_full_optimization; 409 } 410 if (!is_valid_comp_level(comp_level)) { 411 return; 412 } 413 Klass* k = method->method_holder(); 414 ((InstanceKlass*)k)->initialize(THREAD); 415 if (HAS_PENDING_EXCEPTION) { 416 oop throwable = PENDING_EXCEPTION; 417 java_lang_Throwable::print(throwable, tty); 418 tty->cr(); 419 if (ReplayIgnoreInitErrors) { 420 CLEAR_PENDING_EXCEPTION; 421 ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized); 422 } else { 423 return; 424 } 425 } 426 // Make sure the existence of a prior compile doesn't stop this one 427 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code(); 428 if (nm != NULL) { 429 nm->make_not_entrant(); 430 } 431 replay_state = this; 432 CompileBroker::compile_method(method, entry_bci, comp_level, 433 methodHandle(), 0, "replay", THREAD); 434 replay_state = NULL; 435 reset(); 436 } 437 438 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 439 // 440 // 441 void process_ciMethod(TRAPS) { 442 Method* method = parse_method(CHECK); 443 if (had_error()) return; 444 ciMethodRecord* rec = new_ciMethod(method); 445 rec->invocation_counter = parse_int("invocation_counter"); 446 rec->backedge_counter = parse_int("backedge_counter"); 447 rec->interpreter_invocation_count = parse_int("interpreter_invocation_count"); 448 rec->interpreter_throwout_count = parse_int("interpreter_throwout_count"); 449 rec->instructions_size = parse_int("instructions_size"); 450 } 451 452 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> 453 void process_ciMethodData(TRAPS) { 454 Method* method = parse_method(CHECK); 455 if (had_error()) return; 456 /* jsut copied from Method, to build interpret data*/ 457 if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) { 458 return; 459 } 460 // methodOopDesc::build_interpreter_method_data(method, CHECK); 461 { 462 // Grab a lock here to prevent multiple 463 // MethodData*s from being created. 464 MutexLocker ml(MethodData_lock, THREAD); 465 if (method->method_data() == NULL) { 466 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 467 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK); 468 method->set_method_data(method_data); 469 } 470 } 471 472 // collect and record all the needed information for later 473 ciMethodDataRecord* rec = new_ciMethodData(method); 474 rec->state = parse_int("state"); 475 rec->current_mileage = parse_int("current_mileage"); 476 477 rec->orig_data = parse_data("orig", rec->orig_data_length); 478 if (rec->orig_data == NULL) { 479 return; 480 } 481 rec->data = parse_intptr_data("data", rec->data_length); 482 if (rec->data == NULL) { 483 return; 484 } 485 if (!parse_tag_and_count("oops", rec->oops_length)) { 486 return; 487 } 488 rec->oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->oops_length); 489 rec->oops_offsets = NEW_RESOURCE_ARRAY(int, rec->oops_length); 490 for (int i = 0; i < rec->oops_length; i++) { 491 int offset = parse_int("offset"); 492 if (had_error()) { 493 return; 494 } 495 Klass* k = parse_klass(CHECK); 496 rec->oops_offsets[i] = offset; 497 KlassHandle *kh = NEW_C_HEAP_OBJ(KlassHandle, mtCompiler); 498 ::new ((void*)kh) KlassHandle(THREAD, k); 499 rec->oops_handles[i] = (jobject)kh; 500 } 501 } 502 503 // instanceKlass <name> 504 // 505 // Loads and initializes the klass 'name'. This can be used to 506 // create particular class loading environments 507 void process_instanceKlass(TRAPS) { 508 // just load the referenced class 509 Klass* k = parse_klass(CHECK); 510 } 511 512 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ... 513 // 514 // Load the klass 'name' and link or initialize it. Verify that the 515 // constant pool is the same length as 'length' and make sure the 516 // constant pool tags are in the same state. 517 void process_ciInstanceKlass(TRAPS) { 518 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 519 int is_linked = parse_int("is_linked"); 520 int is_initialized = parse_int("is_initialized"); 521 int length = parse_int("length"); 522 if (is_initialized) { 523 k->initialize(THREAD); 524 if (HAS_PENDING_EXCEPTION) { 525 oop throwable = PENDING_EXCEPTION; 526 java_lang_Throwable::print(throwable, tty); 527 tty->cr(); 528 if (ReplayIgnoreInitErrors) { 529 CLEAR_PENDING_EXCEPTION; 530 k->set_init_state(InstanceKlass::fully_initialized); 531 } else { 532 return; 533 } 534 } 535 } else if (is_linked) { 536 k->link_class(CHECK); 537 } 538 ConstantPool* cp = k->constants(); 539 if (length != cp->length()) { 540 report_error("constant pool length mismatch: wrong class files?"); 541 return; 542 } 543 544 int parsed_two_word = 0; 545 for (int i = 1; i < length; i++) { 546 int tag = parse_int("tag"); 547 if (had_error()) { 548 return; 549 } 550 switch (cp->tag_at(i).value()) { 551 case JVM_CONSTANT_UnresolvedClass: { 552 if (tag == JVM_CONSTANT_Class) { 553 tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i); 554 Klass* k = cp->klass_at(i, CHECK); 555 } 556 break; 557 } 558 case JVM_CONSTANT_Long: 559 case JVM_CONSTANT_Double: 560 parsed_two_word = i + 1; 561 562 case JVM_CONSTANT_ClassIndex: 563 case JVM_CONSTANT_StringIndex: 564 case JVM_CONSTANT_String: 565 case JVM_CONSTANT_UnresolvedClassInError: 566 case JVM_CONSTANT_Fieldref: 567 case JVM_CONSTANT_Methodref: 568 case JVM_CONSTANT_InterfaceMethodref: 569 case JVM_CONSTANT_NameAndType: 570 case JVM_CONSTANT_Utf8: 571 case JVM_CONSTANT_Integer: 572 case JVM_CONSTANT_Float: 573 if (tag != cp->tag_at(i).value()) { 574 report_error("tag mismatch: wrong class files?"); 575 return; 576 } 577 break; 578 579 case JVM_CONSTANT_Class: 580 if (tag == JVM_CONSTANT_Class) { 581 } else if (tag == JVM_CONSTANT_UnresolvedClass) { 582 tty->print_cr("Warning: entry was unresolved in the replay data"); 583 } else { 584 report_error("Unexpected tag"); 585 return; 586 } 587 break; 588 589 case 0: 590 if (parsed_two_word == i) continue; 591 592 default: 593 fatal(err_msg_res("Unexpected tag: %d", cp->tag_at(i).value())); 594 break; 595 } 596 597 } 598 } 599 600 // Initialize a class and fill in the value for a static field. 601 // This is useful when the compile was dependent on the value of 602 // static fields but it's impossible to properly rerun the static 603 // initiailizer. 604 void process_staticfield(TRAPS) { 605 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 606 607 if (ReplaySuppressInitializers == 0 || 608 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) { 609 return; 610 } 611 612 assert(k->is_initialized(), "must be"); 613 614 const char* field_name = parse_escaped_string();; 615 const char* field_signature = parse_string(); 616 fieldDescriptor fd; 617 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK); 618 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 619 if (!k->find_local_field(name, sig, &fd) || 620 !fd.is_static() || 621 fd.has_initial_value()) { 622 report_error(field_name); 623 return; 624 } 625 626 oop java_mirror = k->java_mirror(); 627 if (field_signature[0] == '[') { 628 int length = parse_int("array length"); 629 oop value = NULL; 630 631 if (field_signature[1] == '[') { 632 // multi dimensional array 633 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 634 int rank = 0; 635 while (field_signature[rank] == '[') { 636 rank++; 637 } 638 int* dims = NEW_RESOURCE_ARRAY(int, rank); 639 dims[0] = length; 640 for (int i = 1; i < rank; i++) { 641 dims[i] = 1; // These aren't relevant to the compiler 642 } 643 value = kelem->multi_allocate(rank, dims, CHECK); 644 } else { 645 if (strcmp(field_signature, "[B") == 0) { 646 value = oopFactory::new_byteArray(length, CHECK); 647 } else if (strcmp(field_signature, "[Z") == 0) { 648 value = oopFactory::new_boolArray(length, CHECK); 649 } else if (strcmp(field_signature, "[C") == 0) { 650 value = oopFactory::new_charArray(length, CHECK); 651 } else if (strcmp(field_signature, "[S") == 0) { 652 value = oopFactory::new_shortArray(length, CHECK); 653 } else if (strcmp(field_signature, "[F") == 0) { 654 value = oopFactory::new_singleArray(length, CHECK); 655 } else if (strcmp(field_signature, "[D") == 0) { 656 value = oopFactory::new_doubleArray(length, CHECK); 657 } else if (strcmp(field_signature, "[I") == 0) { 658 value = oopFactory::new_intArray(length, CHECK); 659 } else if (strcmp(field_signature, "[J") == 0) { 660 value = oopFactory::new_longArray(length, CHECK); 661 } else if (field_signature[0] == '[' && field_signature[1] == 'L') { 662 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK); 663 value = oopFactory::new_objArray(kelem(), length, CHECK); 664 } else { 665 report_error("unhandled array staticfield"); 666 } 667 } 668 java_mirror->obj_field_put(fd.offset(), value); 669 } else { 670 const char* string_value = parse_escaped_string(); 671 if (strcmp(field_signature, "I") == 0) { 672 int value = atoi(string_value); 673 java_mirror->int_field_put(fd.offset(), value); 674 } else if (strcmp(field_signature, "B") == 0) { 675 int value = atoi(string_value); 676 java_mirror->byte_field_put(fd.offset(), value); 677 } else if (strcmp(field_signature, "C") == 0) { 678 int value = atoi(string_value); 679 java_mirror->char_field_put(fd.offset(), value); 680 } else if (strcmp(field_signature, "S") == 0) { 681 int value = atoi(string_value); 682 java_mirror->short_field_put(fd.offset(), value); 683 } else if (strcmp(field_signature, "Z") == 0) { 684 int value = atol(string_value); 685 java_mirror->bool_field_put(fd.offset(), value); 686 } else if (strcmp(field_signature, "J") == 0) { 687 jlong value; 688 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) { 689 fprintf(stderr, "Error parsing long: %s\n", string_value); 690 return; 691 } 692 java_mirror->long_field_put(fd.offset(), value); 693 } else if (strcmp(field_signature, "F") == 0) { 694 float value = atof(string_value); 695 java_mirror->float_field_put(fd.offset(), value); 696 } else if (strcmp(field_signature, "D") == 0) { 697 double value = atof(string_value); 698 java_mirror->double_field_put(fd.offset(), value); 699 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 700 Handle value = java_lang_String::create_from_str(string_value, CHECK); 701 java_mirror->obj_field_put(fd.offset(), value()); 702 } else if (field_signature[0] == 'L') { 703 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 704 KlassHandle kelem = resolve_klass(field_signature, CHECK); 705 oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK); 706 java_mirror->obj_field_put(fd.offset(), value); 707 } else { 708 report_error("unhandled staticfield"); 709 } 710 } 711 } 712 713#if INCLUDE_JVMTI 714 void process_JvmtiExport(TRAPS) { 715 const char* field = parse_string(); 716 bool value = parse_int("JvmtiExport flag") != 0; 717 if (strcmp(field, "can_access_local_variables") == 0) { 718 JvmtiExport::set_can_access_local_variables(value); 719 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 720 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 721 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 722 JvmtiExport::set_can_post_on_exceptions(value); 723 } else { 724 report_error("Unrecognized JvmtiExport directive"); 725 } 726 } 727#endif // INCLUDE_JVMTI 728 729 // Create and initialize a record for a ciMethod 730 ciMethodRecord* new_ciMethod(Method* method) { 731 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 732 rec->klass = method->method_holder()->name()->as_utf8(); 733 rec->method = method->name()->as_utf8(); 734 rec->signature = method->signature()->as_utf8(); 735 ci_method_records.append(rec); 736 return rec; 737 } 738 739 // Lookup data for a ciMethod 740 ciMethodRecord* find_ciMethodRecord(Method* method) { 741 const char* klass_name = method->method_holder()->name()->as_utf8(); 742 const char* method_name = method->name()->as_utf8(); 743 const char* signature = method->signature()->as_utf8(); 744 for (int i = 0; i < ci_method_records.length(); i++) { 745 ciMethodRecord* rec = ci_method_records.at(i); 746 if (strcmp(rec->klass, klass_name) == 0 && 747 strcmp(rec->method, method_name) == 0 && 748 strcmp(rec->signature, signature) == 0) { 749 return rec; 750 } 751 } 752 return NULL; 753 } 754 755 // Create and initialize a record for a ciMethodData 756 ciMethodDataRecord* new_ciMethodData(Method* method) { 757 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 758 rec->klass = method->method_holder()->name()->as_utf8(); 759 rec->method = method->name()->as_utf8(); 760 rec->signature = method->signature()->as_utf8(); 761 ci_method_data_records.append(rec); 762 return rec; 763 } 764 765 // Lookup data for a ciMethodData 766 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 767 const char* klass_name = method->method_holder()->name()->as_utf8(); 768 const char* method_name = method->name()->as_utf8(); 769 const char* signature = method->signature()->as_utf8(); 770 for (int i = 0; i < ci_method_data_records.length(); i++) { 771 ciMethodDataRecord* rec = ci_method_data_records.at(i); 772 if (strcmp(rec->klass, klass_name) == 0 && 773 strcmp(rec->method, method_name) == 0 && 774 strcmp(rec->signature, signature) == 0) { 775 return rec; 776 } 777 } 778 return NULL; 779 } 780 781 const char* error_message() { 782 return _error_message; 783 } 784 785 void reset() { 786 _error_message = NULL; 787 ci_method_records.clear(); 788 ci_method_data_records.clear(); 789 } 790 791 // Take an ascii string contain \u#### escapes and convert it to utf8 792 // in place. 793 static void unescape_string(char* value) { 794 char* from = value; 795 char* to = value; 796 while (*from != '\0') { 797 if (*from != '\\') { 798 *from++ = *to++; 799 } else { 800 switch (from[1]) { 801 case 'u': { 802 from += 2; 803 jchar value=0; 804 for (int i=0; i<4; i++) { 805 char c = *from++; 806 switch (c) { 807 case '0': case '1': case '2': case '3': case '4': 808 case '5': case '6': case '7': case '8': case '9': 809 value = (value << 4) + c - '0'; 810 break; 811 case 'a': case 'b': case 'c': 812 case 'd': case 'e': case 'f': 813 value = (value << 4) + 10 + c - 'a'; 814 break; 815 case 'A': case 'B': case 'C': 816 case 'D': case 'E': case 'F': 817 value = (value << 4) + 10 + c - 'A'; 818 break; 819 default: 820 ShouldNotReachHere(); 821 } 822 } 823 UNICODE::convert_to_utf8(&value, 1, to); 824 to++; 825 break; 826 } 827 case 't': *to++ = '\t'; from += 2; break; 828 case 'n': *to++ = '\n'; from += 2; break; 829 case 'r': *to++ = '\r'; from += 2; break; 830 case 'f': *to++ = '\f'; from += 2; break; 831 default: 832 ShouldNotReachHere(); 833 } 834 } 835 } 836 *from = *to; 837 } 838}; 839 840void ciReplay::replay(TRAPS) { 841 int exit_code = replay_impl(THREAD); 842 843 Threads::destroy_vm(); 844 845 vm_exit(exit_code); 846} 847 848int ciReplay::replay_impl(TRAPS) { 849 HandleMark hm; 850 ResourceMark rm; 851 // Make sure we don't run with background compilation 852 BackgroundCompilation = false; 853 854 if (ReplaySuppressInitializers > 2) { 855 // ReplaySuppressInitializers > 2 means that we want to allow 856 // normal VM bootstrap but once we get into the replay itself 857 // don't allow any intializers to be run. 858 ReplaySuppressInitializers = 1; 859 } 860 861 if (FLAG_IS_DEFAULT(ReplayDataFile)) { 862 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt)."); 863 return 1; 864 } 865 866 // Load and parse the replay data 867 CompileReplay rp(ReplayDataFile, THREAD); 868 int exit_code = 0; 869 if (rp.can_replay()) { 870 rp.process(THREAD); 871 } else { 872 exit_code = 1; 873 return exit_code; 874 } 875 876 if (HAS_PENDING_EXCEPTION) { 877 oop throwable = PENDING_EXCEPTION; 878 CLEAR_PENDING_EXCEPTION; 879 java_lang_Throwable::print(throwable, tty); 880 tty->cr(); 881 java_lang_Throwable::print_stack_trace(throwable, tty); 882 tty->cr(); 883 exit_code = 2; 884 } 885 886 if (rp.had_error()) { 887 tty->print_cr("Failed on %s", rp.error_message()); 888 exit_code = 1; 889 } 890 return exit_code; 891} 892 893 894void ciReplay::initialize(ciMethodData* m) { 895 if (replay_state == NULL) { 896 return; 897 } 898 899 ASSERT_IN_VM; 900 ResourceMark rm; 901 902 Method* method = m->get_MethodData()->method(); 903 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 904 if (rec == NULL) { 905 // This indicates some mismatch with the original environment and 906 // the replay environment though it's not always enough to 907 // interfere with reproducing a bug 908 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 909 method->print_name(tty); 910 tty->cr(); 911 } else { 912 m->_state = rec->state; 913 m->_current_mileage = rec->current_mileage; 914 if (rec->data_length != 0) { 915 assert(m->_data_size == rec->data_length * (int)sizeof(rec->data[0]), "must agree"); 916 917 // Write the correct ciObjects back into the profile data 918 ciEnv* env = ciEnv::current(); 919 for (int i = 0; i < rec->oops_length; i++) { 920 KlassHandle *h = (KlassHandle *)rec->oops_handles[i]; 921 *(ciMetadata**)(rec->data + rec->oops_offsets[i]) = 922 env->get_metadata((*h)()); 923 } 924 // Copy the updated profile data into place as intptr_ts 925#ifdef _LP64 926 Copy::conjoint_jlongs_atomic((jlong *)rec->data, (jlong *)m->_data, rec->data_length); 927#else 928 Copy::conjoint_jints_atomic((jint *)rec->data, (jint *)m->_data, rec->data_length); 929#endif 930 } 931 932 // copy in the original header 933 Copy::conjoint_jbytes(rec->orig_data, (char*)&m->_orig, rec->orig_data_length); 934 } 935} 936 937 938bool ciReplay::should_not_inline(ciMethod* method) { 939 if (replay_state == NULL) { 940 return false; 941 } 942 943 VM_ENTRY_MARK; 944 // ciMethod without a record shouldn't be inlined. 945 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 946} 947 948 949void ciReplay::initialize(ciMethod* m) { 950 if (replay_state == NULL) { 951 return; 952 } 953 954 ASSERT_IN_VM; 955 ResourceMark rm; 956 957 Method* method = m->get_Method(); 958 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 959 if (rec == NULL) { 960 // This indicates some mismatch with the original environment and 961 // the replay environment though it's not always enough to 962 // interfere with reproducing a bug 963 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 964 method->print_name(tty); 965 tty->cr(); 966 } else { 967 EXCEPTION_CONTEXT; 968 MethodCounters* mcs = method->method_counters(); 969 // m->_instructions_size = rec->instructions_size; 970 m->_instructions_size = -1; 971 m->_interpreter_invocation_count = rec->interpreter_invocation_count; 972 m->_interpreter_throwout_count = rec->interpreter_throwout_count; 973 if (mcs == NULL) { 974 mcs = Method::build_method_counters(method, CHECK_AND_CLEAR); 975 } 976 mcs->invocation_counter()->_counter = rec->invocation_counter; 977 mcs->backedge_counter()->_counter = rec->backedge_counter; 978 } 979} 980 981bool ciReplay::is_loaded(Method* method) { 982 if (replay_state == NULL) { 983 return true; 984 } 985 986 ASSERT_IN_VM; 987 ResourceMark rm; 988 989 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 990 return rec != NULL; 991} 992#endif // PRODUCT 993