1 /*
2 * Copyright (c) 2013, 2022, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "ci/ciMethodData.hpp"
28 #include "ci/ciReplay.hpp"
29 #include "ci/ciSymbol.hpp"
30 #include "ci/ciKlass.hpp"
31 #include "ci/ciUtilities.inline.hpp"
32 #include "classfile/javaClasses.hpp"
33 #include "classfile/symbolTable.hpp"
34 #include "classfile/systemDictionary.hpp"
35 #include "compiler/compilationPolicy.hpp"
36 #include "compiler/compileBroker.hpp"
37 #include "compiler/compilerDefinitions.inline.hpp"
38 #include "interpreter/linkResolver.hpp"
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
828 // instance)
829 method->method_holder()->link_class(CHECK);
830 // Method::build_profiling_method_data(method, CHECK);
831 {
832 // Grab a lock here to prevent multiple
833 // MethodData*s from being created.
834 MutexLocker ml(THREAD, MethodData_lock);
835 if (method->method_data() == NULL) {
836 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
837 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK);
838 method->set_method_data(method_data);
839 }
840 }
841
842 // collect and record all the needed information for later
843 ciMethodDataRecord* rec = new_ciMethodData(method);
844 rec->_state = parse_int("state");
845 if (_version < 1) {
846 parse_int("current_mileage");
847 } else {
848 rec->_invocation_counter = parse_int("invocation_counter");
849 }
850
851 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
852 if (rec->_orig_data == NULL) {
853 return;
854 }
855 rec->_data = parse_intptr_data("data", rec->_data_length);
856 if (rec->_data == NULL) {
857 return;
858 }
859 if (!parse_tag_and_count("oops", rec->_classes_length)) {
860 return;
861 }
862 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
863 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
864 for (int i = 0; i < rec->_classes_length; i++) {
865 int offset = parse_int("offset");
866 if (had_error()) {
867 return;
868 }
869 Klass* k = parse_klass(CHECK);
870 rec->_classes_offsets[i] = offset;
871 rec->_classes[i] = k;
872 }
873
874 if (!parse_tag_and_count("methods", rec->_methods_length)) {
875 return;
876 }
877 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
878 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
879 for (int i = 0; i < rec->_methods_length; i++) {
880 int offset = parse_int("offset");
881 if (had_error()) {
882 return;
883 }
884 Method* m = parse_method(CHECK);
885 rec->_methods_offsets[i] = offset;
886 rec->_methods[i] = m;
887 }
888 }
889
890 // instanceKlass <name>
891 // instanceKlass <constant pool ref> # <original hidden class name>
892 //
893 // Loads and initializes the klass 'name'. This can be used to
894 // create particular class loading environments
895 void process_instanceKlass(TRAPS) {
896 // just load the referenced class
897 Klass* k = parse_klass(CHECK);
898
899 if (_version >= 1) {
900 if (!_protection_domain_initialized && k != NULL) {
901 assert(_protection_domain() == NULL, "must be uninitialized");
902 // The first entry is the holder class of the method for which a replay compilation is requested.
903 // Use the same protection domain to load all subsequent classes in order to resolve all classes
904 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
905 _protection_domain = Handle(_thread, k->protection_domain());
906 }
907
908 _protection_domain_initialized = true;
909 }
910
911 if (k == NULL) {
912 return;
913 }
914 const char* comment = parse_string();
915 bool is_comment = comment != NULL && strcmp(comment, "#") == 0;
916 if (k->is_hidden() != is_comment) {
917 report_error("hidden class with comment expected");
918 return;
919 }
920 // comment, print or ignore
921 if (is_comment) {
922 if (Verbose) {
923 const char* hidden = parse_string();
924 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
925 }
926 skip_remaining();
927 }
928 }
929
930 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
931 //
932 // Load the klass 'name' and link or initialize it. Verify that the
933 // constant pool is the same length as 'length' and make sure the
934 // constant pool tags are in the same state.
935 void process_ciInstanceKlass(TRAPS) {
936 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
937 if (k == NULL) {
938 skip_remaining();
939 return;
940 }
941 int is_linked = parse_int("is_linked");
942 int is_initialized = parse_int("is_initialized");
943 int length = parse_int("length");
944 if (is_initialized) {
945 k->initialize(THREAD);
946 if (HAS_PENDING_EXCEPTION) {
947 oop throwable = PENDING_EXCEPTION;
948 java_lang_Throwable::print(throwable, tty);
949 tty->cr();
950 if (ReplayIgnoreInitErrors) {
951 CLEAR_PENDING_EXCEPTION;
952 k->set_init_state(InstanceKlass::fully_initialized);
953 } else {
954 return;
955 }
956 }
957 } else if (is_linked) {
958 k->link_class(CHECK);
959 }
960 new_ciInstanceKlass(k);
961 ConstantPool* cp = k->constants();
962 if (length != cp->length()) {
963 report_error("constant pool length mismatch: wrong class files?");
964 return;
965 }
966
967 int parsed_two_word = 0;
968 for (int i = 1; i < length; i++) {
969 int tag = parse_int("tag");
970 if (had_error()) {
971 return;
972 }
973 switch (cp->tag_at(i).value()) {
974 case JVM_CONSTANT_UnresolvedClass: {
975 if (tag == JVM_CONSTANT_Class) {
976 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
977 Klass* k = cp->klass_at(i, CHECK);
978 }
979 break;
980 }
981 case JVM_CONSTANT_Long:
982 case JVM_CONSTANT_Double:
983 parsed_two_word = i + 1;
984
985 case JVM_CONSTANT_ClassIndex:
986 case JVM_CONSTANT_StringIndex:
987 case JVM_CONSTANT_String:
988 case JVM_CONSTANT_UnresolvedClassInError:
989 case JVM_CONSTANT_Fieldref:
990 case JVM_CONSTANT_Methodref:
991 case JVM_CONSTANT_InterfaceMethodref:
992 case JVM_CONSTANT_NameAndType:
993 case JVM_CONSTANT_Utf8:
994 case JVM_CONSTANT_Integer:
995 case JVM_CONSTANT_Float:
996 case JVM_CONSTANT_MethodHandle:
997 case JVM_CONSTANT_MethodType:
998 case JVM_CONSTANT_Dynamic:
999 case JVM_CONSTANT_InvokeDynamic:
1000 if (tag != cp->tag_at(i).value()) {
1001 report_error("tag mismatch: wrong class files?");
1002 return;
1003 }
1004 break;
1005
1006 case JVM_CONSTANT_Class:
1007 if (tag == JVM_CONSTANT_UnresolvedClass) {
1008 Klass* k = cp->klass_at(i, CHECK);
1009 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
1010 } else if (tag != JVM_CONSTANT_Class) {
1011 report_error("Unexpected tag");
1012 return;
1013 }
1014 break;
1015
1016 case 0:
1017 if (parsed_two_word == i) continue;
1018
1019 default:
1020 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1021 break;
1022 }
1023
1024 }
1025 }
1026
1027 // staticfield <klass> <name> <signature> <value>
1028 //
1029 // Initialize a class and fill in the value for a static field.
1030 // This is useful when the compile was dependent on the value of
1031 // static fields but it's impossible to properly rerun the static
1032 // initializer.
1033 void process_staticfield(TRAPS) {
1034 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1035
1036 if (k == NULL || ReplaySuppressInitializers == 0 ||
1037 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) {
1038 skip_remaining();
1039 return;
1040 }
1041
1042 assert(k->is_initialized(), "must be");
1043
1044 const char* field_name = parse_escaped_string();
1045 const char* field_signature = parse_string();
1046 fieldDescriptor fd;
1047 Symbol* name = SymbolTable::new_symbol(field_name);
1048 Symbol* sig = SymbolTable::new_symbol(field_signature);
1049 if (!k->find_local_field(name, sig, &fd) ||
1050 !fd.is_static() ||
1051 fd.has_initial_value()) {
1052 report_error(field_name);
1053 return;
1054 }
1055
1056 oop java_mirror = k->java_mirror();
1057 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1058 int length = parse_int("array length");
1059 oop value = NULL;
1060
1061 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1062 // multi dimensional array
1063 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1064 if (kelem == NULL) {
1065 return;
1066 }
1067 int rank = 0;
1068 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1069 rank++;
1070 }
1071 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1072 dims[0] = length;
1073 for (int i = 1; i < rank; i++) {
1074 dims[i] = 1; // These aren't relevant to the compiler
1075 }
1076 value = kelem->multi_allocate(rank, dims, CHECK);
1077 } else {
1078 if (strcmp(field_signature, "[B") == 0) {
1079 value = oopFactory::new_byteArray(length, CHECK);
1080 } else if (strcmp(field_signature, "[Z") == 0) {
1081 value = oopFactory::new_boolArray(length, CHECK);
1082 } else if (strcmp(field_signature, "[C") == 0) {
1083 value = oopFactory::new_charArray(length, CHECK);
1084 } else if (strcmp(field_signature, "[S") == 0) {
1085 value = oopFactory::new_shortArray(length, CHECK);
1086 } else if (strcmp(field_signature, "[F") == 0) {
1087 value = oopFactory::new_floatArray(length, CHECK);
1088 } else if (strcmp(field_signature, "[D") == 0) {
1089 value = oopFactory::new_doubleArray(length, CHECK);
1090 } else if (strcmp(field_signature, "[I") == 0) {
1091 value = oopFactory::new_intArray(length, CHECK);
1092 } else if (strcmp(field_signature, "[J") == 0) {
1093 value = oopFactory::new_longArray(length, CHECK);
1094 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1095 field_signature[1] == JVM_SIGNATURE_CLASS) {
1096 Klass* kelem = resolve_klass(field_signature + 1, CHECK);
1097 value = oopFactory::new_objArray(kelem, length, CHECK);
1098 } else {
1099 report_error("unhandled array staticfield");
1100 }
1101 }
1102 java_mirror->obj_field_put(fd.offset(), value);
1103 } else {
1104 const char* string_value = parse_escaped_string();
1105 if (strcmp(field_signature, "I") == 0) {
1106 int value = atoi(string_value);
1107 java_mirror->int_field_put(fd.offset(), value);
1108 } else if (strcmp(field_signature, "B") == 0) {
1109 int value = atoi(string_value);
1110 java_mirror->byte_field_put(fd.offset(), value);
1111 } else if (strcmp(field_signature, "C") == 0) {
1112 int value = atoi(string_value);
1113 java_mirror->char_field_put(fd.offset(), value);
1114 } else if (strcmp(field_signature, "S") == 0) {
1115 int value = atoi(string_value);
1116 java_mirror->short_field_put(fd.offset(), value);
1117 } else if (strcmp(field_signature, "Z") == 0) {
1118 int value = atoi(string_value);
1119 java_mirror->bool_field_put(fd.offset(), value);
1120 } else if (strcmp(field_signature, "J") == 0) {
1121 jlong value;
1122 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1123 fprintf(stderr, "Error parsing long: %s\n", string_value);
1124 return;
1125 }
1126 java_mirror->long_field_put(fd.offset(), value);
1127 } else if (strcmp(field_signature, "F") == 0) {
1128 float value = atof(string_value);
1129 java_mirror->float_field_put(fd.offset(), value);
1130 } else if (strcmp(field_signature, "D") == 0) {
1131 double value = atof(string_value);
1132 java_mirror->double_field_put(fd.offset(), value);
1133 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1134 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1135 java_mirror->obj_field_put(fd.offset(), value());
1136 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1137 Klass* k = resolve_klass(string_value, CHECK);
1138 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1139 java_mirror->obj_field_put(fd.offset(), value);
1140 } else {
1141 report_error("unhandled staticfield");
1142 }
1143 }
1144 }
1145
1146 #if INCLUDE_JVMTI
1147 // JvmtiExport <field> <value>
1148 void process_JvmtiExport(TRAPS) {
1149 const char* field = parse_string();
1150 bool value = parse_int("JvmtiExport flag") != 0;
1151 if (strcmp(field, "can_access_local_variables") == 0) {
1152 JvmtiExport::set_can_access_local_variables(value);
1153 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1154 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1155 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1156 JvmtiExport::set_can_post_on_exceptions(value);
1157 } else {
1158 report_error("Unrecognized JvmtiExport directive");
1159 }
1160 }
1161 #endif // INCLUDE_JVMTI
1162
1163 // Create and initialize a record for a ciMethod
1164 ciMethodRecord* new_ciMethod(Method* method) {
1165 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1166 rec->_klass_name = method->method_holder()->name()->as_utf8();
1167 rec->_method_name = method->name()->as_utf8();
1168 rec->_signature = method->signature()->as_utf8();
1169 _ci_method_records.append(rec);
1170 return rec;
1171 }
1172
1173 // Lookup data for a ciMethod
1174 ciMethodRecord* find_ciMethodRecord(Method* method) {
1175 const char* klass_name = method->method_holder()->name()->as_utf8();
1176 const char* method_name = method->name()->as_utf8();
1177 const char* signature = method->signature()->as_utf8();
1178 for (int i = 0; i < _ci_method_records.length(); i++) {
1179 ciMethodRecord* rec = _ci_method_records.at(i);
1180 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1181 strcmp(rec->_method_name, method_name) == 0 &&
1182 strcmp(rec->_signature, signature) == 0) {
1183 return rec;
1184 }
1185 }
1186 return NULL;
1187 }
1188
1189 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1190 void new_ciInstanceKlass(const InstanceKlass* klass) {
1191 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1192 rec->_klass = klass;
1193 oop java_mirror = klass->java_mirror();
1194 Handle h_java_mirror(_thread, java_mirror);
1195 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1196 _ci_instance_klass_records.append(rec);
1197 }
1198
1199 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1200 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1201 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1202 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1203 if (klass == rec->_klass) {
1204 // ciInstanceKlass for this klass was resolved.
1205 return rec;
1206 }
1207 }
1208 return NULL;
1209 }
1210
1211 // Create and initialize a record for a ciMethodData
1212 ciMethodDataRecord* new_ciMethodData(Method* method) {
1213 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1214 rec->_klass_name = method->method_holder()->name()->as_utf8();
1215 rec->_method_name = method->name()->as_utf8();
1216 rec->_signature = method->signature()->as_utf8();
1217 _ci_method_data_records.append(rec);
1218 return rec;
1219 }
1220
1221 // Lookup data for a ciMethodData
1222 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1223 const char* klass_name = method->method_holder()->name()->as_utf8();
1224 const char* method_name = method->name()->as_utf8();
1225 const char* signature = method->signature()->as_utf8();
1226 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1227 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1228 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1229 strcmp(rec->_method_name, method_name) == 0 &&
1230 strcmp(rec->_signature, signature) == 0) {
1231 return rec;
1232 }
1233 }
1234 return NULL;
1235 }
1236
1237 // Create and initialize a record for a ciInlineRecord
1238 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1239 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1240 rec->_klass_name = method->method_holder()->name()->as_utf8();
1241 rec->_method_name = method->name()->as_utf8();
1242 rec->_signature = method->signature()->as_utf8();
1243 rec->_inline_bci = bci;
1244 rec->_inline_depth = depth;
1245 rec->_inline_late = inline_late;
1246 _ci_inline_records->append(rec);
1247 return rec;
1248 }
1249
1250 // Lookup inlining data for a ciMethod
1251 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1252 if (_ci_inline_records != NULL) {
1253 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1254 }
1255 return NULL;
1256 }
1257
1258 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1259 Method* method, int bci, int depth) {
1260 if (records != NULL) {
1261 const char* klass_name = method->method_holder()->name()->as_utf8();
1262 const char* method_name = method->name()->as_utf8();
1263 const char* signature = method->signature()->as_utf8();
1264 for (int i = 0; i < records->length(); i++) {
1265 ciInlineRecord* rec = records->at(i);
1266 if ((rec->_inline_bci == bci) &&
1267 (rec->_inline_depth == depth) &&
1268 (strcmp(rec->_klass_name, klass_name) == 0) &&
1269 (strcmp(rec->_method_name, method_name) == 0) &&
1270 (strcmp(rec->_signature, signature) == 0)) {
1271 return rec;
1272 }
1273 }
1274 }
1275 return NULL;
1276 }
1277
1278 const char* error_message() {
1279 return _error_message;
1280 }
1281
1282 void reset() {
1283 _error_message = NULL;
1284 _ci_method_records.clear();
1285 _ci_method_data_records.clear();
1286 }
1287
1288 // Take an ascii string contain \u#### escapes and convert it to utf8
1289 // in place.
1290 static void unescape_string(char* value) {
1291 char* from = value;
1292 char* to = value;
1293 while (*from != '\0') {
1294 if (*from != '\\') {
1295 *from++ = *to++;
1296 } else {
1297 switch (from[1]) {
1298 case 'u': {
1299 from += 2;
1300 jchar value=0;
1301 for (int i=0; i<4; i++) {
1302 char c = *from++;
1303 switch (c) {
1304 case '0': case '1': case '2': case '3': case '4':
1305 case '5': case '6': case '7': case '8': case '9':
1306 value = (value << 4) + c - '0';
1307 break;
1308 case 'a': case 'b': case 'c':
1309 case 'd': case 'e': case 'f':
1310 value = (value << 4) + 10 + c - 'a';
1311 break;
1312 case 'A': case 'B': case 'C':
1313 case 'D': case 'E': case 'F':
1314 value = (value << 4) + 10 + c - 'A';
1315 break;
1316 default:
1317 ShouldNotReachHere();
1318 }
1319 }
1320 UNICODE::convert_to_utf8(&value, 1, to);
1321 to++;
1322 break;
1323 }
1324 case 't': *to++ = '\t'; from += 2; break;
1325 case 'n': *to++ = '\n'; from += 2; break;
1326 case 'r': *to++ = '\r'; from += 2; break;
1327 case 'f': *to++ = '\f'; from += 2; break;
1328 default:
1329 ShouldNotReachHere();
1330 }
1331 }
1332 }
1333 *from = *to;
1334 }
1335 };
1336
1337 void ciReplay::replay(TRAPS) {
1338 int exit_code = replay_impl(THREAD);
1339
1340 Threads::destroy_vm();
1341
1342 vm_exit(exit_code);
1343 }
1344
1345 bool ciReplay::no_replay_state() {
1346 return replay_state == NULL;
1347 }
1348
1349 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1350 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1351 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1352 return NULL;
1353 }
1354
1355 VM_ENTRY_MARK;
1356 // Load and parse the replay data
1357 CompileReplay rp(InlineDataFile, THREAD);
1358 if (!rp.can_replay()) {
1359 tty->print_cr("ciReplay: !rp.can_replay()");
1360 return NULL;
1361 }
1362 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1363 if (HAS_PENDING_EXCEPTION) {
1364 Handle throwable(THREAD, PENDING_EXCEPTION);
1365 CLEAR_PENDING_EXCEPTION;
1366 java_lang_Throwable::print_stack_trace(throwable, tty);
1367 tty->cr();
1368 return NULL;
1369 }
1370
1371 if (rp.had_error()) {
1372 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1373 return NULL;
1374 }
1375 return data;
1376 }
1377
1378 int ciReplay::replay_impl(TRAPS) {
1379 HandleMark hm(THREAD);
1380 ResourceMark rm(THREAD);
1381
1382 if (ReplaySuppressInitializers > 2) {
1383 // ReplaySuppressInitializers > 2 means that we want to allow
1384 // normal VM bootstrap but once we get into the replay itself
1385 // don't allow any initializers to be run.
1386 ReplaySuppressInitializers = 1;
1387 }
1388
1389 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1390 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1391 return 1;
1392 }
1393
1394 // Load and parse the replay data
1395 CompileReplay rp(ReplayDataFile, THREAD);
1396 int exit_code = 0;
1397 if (rp.can_replay()) {
1398 rp.process(THREAD);
1399 } else {
1400 exit_code = 1;
1401 return exit_code;
1402 }
1403
1404 if (HAS_PENDING_EXCEPTION) {
1405 Handle throwable(THREAD, PENDING_EXCEPTION);
1406 CLEAR_PENDING_EXCEPTION;
1407 java_lang_Throwable::print_stack_trace(throwable, tty);
1408 tty->cr();
1409 exit_code = 2;
1410 }
1411
1412 if (rp.had_error()) {
1413 tty->print_cr("Failed on %s", rp.error_message());
1414 exit_code = 1;
1415 }
1416 return exit_code;
1417 }
1418
1419 void ciReplay::initialize(ciMethodData* m) {
1420 if (no_replay_state()) {
1421 return;
1422 }
1423
1424 ASSERT_IN_VM;
1425 ResourceMark rm;
1426
1427 Method* method = m->get_MethodData()->method();
1428 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1429 if (rec == NULL) {
1430 // This indicates some mismatch with the original environment and
1431 // the replay environment though it's not always enough to
1432 // interfere with reproducing a bug
1433 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1434 method->print_name(tty);
1435 tty->cr();
1436 } else {
1437 m->_state = rec->_state;
1438 m->_invocation_counter = rec->_invocation_counter;
1439 if (rec->_data_length != 0) {
1440 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1441 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1442
1443 // Write the correct ciObjects back into the profile data
1444 ciEnv* env = ciEnv::current();
1445 for (int i = 0; i < rec->_classes_length; i++) {
1446 Klass *k = rec->_classes[i];
1447 // In case this class pointer is is tagged, preserve the tag bits
1448 intptr_t status = 0;
1449 if (k != NULL) {
1450 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1451 }
1452 rec->_data[rec->_classes_offsets[i]] = status;
1453 }
1454 for (int i = 0; i < rec->_methods_length; i++) {
1455 Method *m = rec->_methods[i];
1456 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1457 env->get_metadata(m);
1458 }
1459 // Copy the updated profile data into place as intptr_ts
1460 #ifdef _LP64
1461 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1462 #else
1463 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1464 #endif
1465 }
1466
1467 // copy in the original header
1468 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1469 }
1470 }
1471
1472
1473 bool ciReplay::should_not_inline(ciMethod* method) {
1474 if (no_replay_state()) {
1475 return false;
1476 }
1477 VM_ENTRY_MARK;
1478 // ciMethod without a record shouldn't be inlined.
1479 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1480 }
1481
1482 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1483 if (data != NULL) {
1484 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1485 VM_ENTRY_MARK;
1486 // Inline record are ordered by bci and depth.
1487 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1488 if (record == NULL) {
1489 return false;
1490 }
1491 should_delay = record->_inline_late;
1492 return true;
1493 } else if (replay_state != NULL) {
1494 VM_ENTRY_MARK;
1495 // Inline record are ordered by bci and depth.
1496 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1497 if (record == NULL) {
1498 return false;
1499 }
1500 should_delay = record->_inline_late;
1501 return true;
1502 }
1503 return false;
1504 }
1505
1506 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1507 if (data != NULL) {
1508 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1509 VM_ENTRY_MARK;
1510 // Inline record are ordered by bci and depth.
1511 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1512 } else if (replay_state != NULL) {
1513 VM_ENTRY_MARK;
1514 // Inline record are ordered by bci and depth.
1515 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1516 }
1517 return false;
1518 }
1519
1520 void ciReplay::initialize(ciMethod* m) {
1521 if (no_replay_state()) {
1522 return;
1523 }
1524
1525 ASSERT_IN_VM;
1526 ResourceMark rm;
1527
1528 Method* method = m->get_Method();
1529 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1530 if (rec == NULL) {
1531 // This indicates some mismatch with the original environment and
1532 // the replay environment though it's not always enough to
1533 // interfere with reproducing a bug
1534 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1535 method->print_name(tty);
1536 tty->cr();
1537 } else {
1538 EXCEPTION_CONTEXT;
1539 // m->_instructions_size = rec->_instructions_size;
1540 m->_instructions_size = -1;
1541 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1542 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1543 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1544 guarantee(mcs != NULL, "method counters allocation failed");
1545 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1546 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1547 }
1548 }
1549
1550 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1551 assert(!no_replay_state(), "must have replay state");
1552
1553 ASSERT_IN_VM;
1554 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1555 assert(rec != NULL, "ciInstanceKlass must be whitelisted");
1556 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1557 }
1558
1559 bool ciReplay::is_loaded(Method* method) {
1560 if (no_replay_state()) {
1561 return true;
1562 }
1563
1564 ASSERT_IN_VM;
1565 ResourceMark rm;
1566
1567 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1568 return rec != NULL;
1569 }
1570
1571 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1572 if (no_replay_state()) {
1573 return false;
1574 }
1575
1576 // Check if klass is found on whitelist.
1577 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1578 return rec == NULL;
1579 }
1580
1581 oop ciReplay::obj_field(oop obj, Symbol* name) {
1582 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1583
1584 do {
1585 if (!ik->has_nonstatic_fields()) {
1586 ik = ik->java_super();
1587 continue;
1588 }
1589
1590 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1591 if (fs.access_flags().is_static()) {
1592 continue;
1593 }
1594 if (fs.name() == name) {
1595 int offset = fs.offset();
1596 #ifdef ASSERT
1597 fieldDescriptor fd = fs.field_descriptor();
1598 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1599 #endif
1600 oop f = obj->obj_field(offset);
1601 return f;
1602 }
1603 }
1604
1605 ik = ik->java_super();
1606 } while (ik != NULL);
1607 return NULL;
1608 }
1609
1610 oop ciReplay::obj_field(oop obj, const char *name) {
1611 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1612 if (fname == NULL) {
1613 return NULL;
1614 }
1615 return obj_field(obj, fname);
1616 }