1 /*
2 * Copyright (c) 2013, 2021, 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 "interpreter/linkResolver.hpp"
38 #include "memory/allocation.inline.hpp"
39 #include "memory/oopFactory.hpp"
40 #include "memory/resourceArea.hpp"
41 #include "oops/constantPool.hpp"
42 #include "oops/cpCache.inline.hpp"
43 #include "oops/fieldStreams.inline.hpp"
44 #include "oops/klass.inline.hpp"
45 #include "oops/method.inline.hpp"
46 #include "oops/oop.inline.hpp"
47 #include "prims/jvmtiExport.hpp"
48 #include "prims/methodHandles.hpp"
49 #include "runtime/fieldDescriptor.inline.hpp"
50 #include "runtime/globals_extension.hpp"
51 #include "runtime/handles.inline.hpp"
52 #include "runtime/java.hpp"
53 #include "utilities/copy.hpp"
54 #include "utilities/macros.hpp"
55 #include "utilities/utf8.hpp"
56
57 #ifndef PRODUCT
58
59 // ciReplay
60
61 typedef struct _ciMethodDataRecord {
62 const char* _klass_name;
63 const char* _method_name;
64 const char* _signature;
65
66 int _state;
67 int _current_mileage;
68
69 intptr_t* _data;
70 char* _orig_data;
71 Klass** _classes;
72 Method** _methods;
73 int* _classes_offsets;
74 int* _methods_offsets;
75 int _data_length;
76 int _orig_data_length;
77 int _classes_length;
78 int _methods_length;
79 } ciMethodDataRecord;
80
81 typedef struct _ciMethodRecord {
82 const char* _klass_name;
83 const char* _method_name;
84 const char* _signature;
85
86 int _instructions_size;
87 int _interpreter_invocation_count;
88 int _interpreter_throwout_count;
89 int _invocation_counter;
90 int _backedge_counter;
91 } ciMethodRecord;
92
93 typedef struct _ciInlineRecord {
94 const char* _klass_name;
95 const char* _method_name;
96 const char* _signature;
97
98 int _inline_depth;
99 int _inline_bci;
100 } ciInlineRecord;
101
102 class CompileReplay;
103 static CompileReplay* replay_state;
104
105 class CompileReplay : public StackObj {
106 private:
107 FILE* _stream;
108 Thread* _thread;
109 Handle _protection_domain;
110 Handle _loader;
111
112 GrowableArray<ciMethodRecord*> _ci_method_records;
113 GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
114
115 // Use pointer because we may need to return inline records
116 // without destroying them.
117 GrowableArray<ciInlineRecord*>* _ci_inline_records;
118
119 const char* _error_message;
120
121 char* _bufptr;
122 char* _buffer;
123 int _buffer_length;
124 int _buffer_pos;
125
126 // "compile" data
127 ciKlass* _iklass;
128 Method* _imethod;
129 int _entry_bci;
130 int _comp_level;
131
132 public:
133 CompileReplay(const char* filename, TRAPS) {
134 _thread = THREAD;
135 _loader = Handle(_thread, SystemDictionary::java_system_loader());
136 _protection_domain = Handle();
137
138 _stream = fopen(filename, "rt");
139 if (_stream == NULL) {
140 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
141 }
142
143 _ci_inline_records = NULL;
144 _error_message = NULL;
145
146 _buffer_length = 32;
147 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
148 _bufptr = _buffer;
149 _buffer_pos = 0;
150
151 _imethod = NULL;
152 _iklass = NULL;
153 _entry_bci = 0;
154 _comp_level = 0;
155
156 test();
157 }
158
159 ~CompileReplay() {
160 if (_stream != NULL) fclose(_stream);
161 }
162
163 void test() {
164 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
165 _bufptr = _buffer;
166 assert(parse_int("test") == 1, "what");
167 assert(parse_int("test") == 2, "what");
168 assert(strcmp(parse_string(), "foo") == 0, "what");
169 assert(parse_int("test") == 4, "what");
170 assert(strcmp(parse_string(), "bar") == 0, "what");
171 assert(parse_intptr_t("test") == 9, "what");
172 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
173 }
174
175 bool had_error() {
176 return _error_message != NULL || _thread->has_pending_exception();
177 }
178
179 bool can_replay() {
180 return !(_stream == NULL || had_error());
181 }
182
183 void report_error(const char* msg) {
184 _error_message = msg;
185 // Restore the _buffer contents for error reporting
186 for (int i = 0; i < _buffer_pos; i++) {
187 if (_buffer[i] == '\0') _buffer[i] = ' ';
188 }
189 }
190
191 int parse_int(const char* label) {
192 if (had_error()) {
193 return 0;
194 }
195
196 int v = 0;
197 int read;
198 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
199 report_error(label);
200 } else {
201 _bufptr += read;
202 }
203 return v;
204 }
205
206 intptr_t parse_intptr_t(const char* label) {
207 if (had_error()) {
208 return 0;
209 }
210
211 intptr_t v = 0;
212 int read;
213 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
214 report_error(label);
215 } else {
216 _bufptr += read;
217 }
218 return v;
219 }
220
221 void skip_ws() {
222 // Skip any leading whitespace
223 while (*_bufptr == ' ' || *_bufptr == '\t') {
224 _bufptr++;
225 }
226 }
227
228
229 char* scan_and_terminate(char delim) {
230 char* str = _bufptr;
231 while (*_bufptr != delim && *_bufptr != '\0') {
232 _bufptr++;
233 }
234 if (*_bufptr != '\0') {
235 *_bufptr++ = '\0';
236 }
237 if (_bufptr == str) {
238 // nothing here
239 return NULL;
240 }
241 return str;
242 }
243
244 char* parse_string() {
245 if (had_error()) return NULL;
246
247 skip_ws();
248 return scan_and_terminate(' ');
249 }
250
251 char* parse_quoted_string() {
252 if (had_error()) return NULL;
253
254 skip_ws();
255
256 if (*_bufptr == '"') {
257 _bufptr++;
258 return scan_and_terminate('"');
259 } else {
260 return scan_and_terminate(' ');
261 }
262 }
263
264 char* parse_escaped_string() {
265 char* result = parse_quoted_string();
266 if (result != NULL) {
267 unescape_string(result);
268 }
269 return result;
270 }
271
272 // Look for the tag 'tag' followed by an
273 bool parse_tag_and_count(const char* tag, int& length) {
274 const char* t = parse_string();
275 if (t == NULL) {
276 return false;
277 }
278
279 if (strcmp(tag, t) != 0) {
280 report_error(tag);
281 return false;
282 }
283 length = parse_int("parse_tag_and_count");
284 return !had_error();
285 }
286
287 // Parse a sequence of raw data encoded as bytes and return the
288 // resulting data.
289 char* parse_data(const char* tag, int& length) {
290 int read_size = 0;
291 if (!parse_tag_and_count(tag, read_size)) {
292 return NULL;
293 }
294
295 int actual_size = sizeof(MethodData::CompilerCounters);
296 char *result = NEW_RESOURCE_ARRAY(char, actual_size);
297 int i = 0;
298 if (read_size != actual_size) {
299 tty->print_cr("Warning: ciMethodData parsing sees MethodData size %i in file, current is %i", read_size,
300 actual_size);
301 // Replay serializes the entire MethodData, but the data is at the end.
302 // If the MethodData instance size has changed, we can pad or truncate in the beginning
303 int padding = actual_size - read_size;
304 if (padding > 0) {
305 // pad missing data with zeros
306 tty->print_cr("- Padding MethodData");
307 for (; i < padding; i++) {
308 result[i] = 0;
309 }
310 } else if (padding < 0) {
311 // drop some data
312 tty->print_cr("- Truncating MethodData");
313 for (int j = 0; j < -padding; j++) {
314 int val = parse_int("data");
315 // discard val
316 }
317 }
318 }
319
320 assert(i < actual_size, "At least some data must remain to be copied");
321 for (; i < actual_size; i++) {
322 int val = parse_int("data");
323 result[i] = val;
324 }
325 length = actual_size;
326 return result;
327 }
328
329 // Parse a standard chunk of data emitted as:
330 // 'tag' <length> # # ...
331 // Where each # is an intptr_t item
332 intptr_t* parse_intptr_data(const char* tag, int& length) {
333 if (!parse_tag_and_count(tag, length)) {
334 return NULL;
335 }
336
337 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
338 for (int i = 0; i < length; i++) {
339 skip_ws();
340 intptr_t val = parse_intptr_t("data");
341 result[i] = val;
342 }
343 return result;
344 }
345
346 // Parse a possibly quoted version of a symbol into a symbolOop
347 Symbol* parse_symbol() {
348 const char* str = parse_escaped_string();
349 if (str != NULL) {
350 Symbol* sym = SymbolTable::new_symbol(str);
351 return sym;
352 }
353 return NULL;
354 }
355
356 bool parse_terminator() {
357 char* terminator = parse_string();
358 if (terminator != NULL && strcmp(terminator, ";") == 0) {
359 return true;
360 }
361 return false;
362 }
363
364 // Parse a special hidden klass location syntax
365 // syntax: @bci <klass> <name> <signature> <bci> <location>* ;
366 // syntax: @cpi <klass> <cpi> <location>* ;
367 Klass* parse_cp_ref(TRAPS) {
368 JavaThread* thread = THREAD;
369 oop obj = NULL;
370 char* ref = parse_string();
371 if (strcmp(ref, "bci") == 0) {
372 Method* m = parse_method(CHECK_NULL);
373 if (m == NULL) {
374 return NULL;
375 }
376
377 InstanceKlass* ik = m->method_holder();
378 const constantPoolHandle cp(Thread::current(), ik->constants());
379
380 // invokedynamic or invokehandle
381
382 methodHandle caller(Thread::current(), m);
383 int bci = parse_int("bci");
384 if (m->validate_bci(bci) != bci) {
385 report_error("bad bci");
386 return NULL;
387 }
388
389 ik->link_class(CHECK_NULL);
390
391 Bytecode_invoke bytecode(caller, bci);
392 int index = bytecode.index();
393
394 ConstantPoolCacheEntry* cp_cache_entry = NULL;
395 CallInfo callInfo;
396 Bytecodes::Code bc = bytecode.invoke_code();
397 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
398 if (bytecode.is_invokedynamic()) {
399 cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index);
400 cp_cache_entry->set_dynamic_call(cp, callInfo);
401 } else if (bytecode.is_invokehandle()) {
402 #ifdef ASSERT
403 Klass* holder = cp->klass_ref_at(index, CHECK_NULL);
404 Symbol* name = cp->name_ref_at(index);
405 assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
406 #endif
407 cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
408 cp_cache_entry->set_method_handle(cp, callInfo);
409 } else {
410 report_error("no dynamic invoke found");
411 return NULL;
412 }
413 char* dyno_ref = parse_string();
414 if (strcmp(dyno_ref, "<appendix>") == 0) {
415 obj = cp_cache_entry->appendix_if_resolved(cp);
416 } else if (strcmp(dyno_ref, "<adapter>") == 0) {
417 if (!parse_terminator()) {
418 report_error("no dynamic invoke found");
419 return NULL;
420 }
421 Method* adapter = cp_cache_entry->f1_as_method();
422 if (adapter == NULL) {
423 report_error("no adapter found");
424 return NULL;
425 }
426 return adapter->method_holder();
427 } else if (strcmp(dyno_ref, "<bsm>") == 0) {
428 int pool_index = cp_cache_entry->constant_pool_index();
429 BootstrapInfo bootstrap_specifier(cp, pool_index, index);
430 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
431 } else {
432 report_error("unrecognized token");
433 return NULL;
434 }
435 } else {
436 // constant pool ref (MethodHandle)
437 if (strcmp(ref, "cpi") != 0) {
438 report_error("unexpected token");
439 return NULL;
440 }
441
442 Klass* k = parse_klass(CHECK_NULL);
443 if (k == NULL) {
444 return NULL;
445 }
446 InstanceKlass* ik = InstanceKlass::cast(k);
447 const constantPoolHandle cp(Thread::current(), ik->constants());
448
449 int cpi = parse_int("cpi");
450
451 if (cpi >= cp->length()) {
452 report_error("bad cpi");
453 return NULL;
454 }
455 if (!cp->tag_at(cpi).is_method_handle()) {
456 report_error("no method handle found at cpi");
457 return NULL;
458 }
459 {
460 bool found_it;
461 obj = cp->find_cached_constant_at(cpi, found_it, thread);
462 }
463 }
464 Klass* k = NULL;
465 if (obj != NULL) {
466 skip_ws();
467 // loop: read fields
468 char* field = NULL;
469 do {
470 field = parse_string();
471 if (field == NULL) {
472 report_error("no field found");
473 return NULL;
474 }
475 if (strcmp(field, ";") == 0) {
476 break;
477 }
478 // raw Method*
479 if (strcmp(field, "<vmtarget>") == 0) {
480 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
481 k = (vmtarget == NULL) ? NULL : vmtarget->method_holder();
482 if (k == NULL) {
483 report_error("null vmtarget found");
484 return NULL;
485 }
486 if (!parse_terminator()) {
487 report_error("missing terminator");
488 return NULL;
489 }
490 return k;
491 }
492 obj = ciReplay::obj_field(obj, field);
493 // array
494 if (obj != NULL && obj->is_objArray()) {
495 objArrayOop arr = (objArrayOop)obj;
496 int index = parse_int("index");
497 if (index >= arr->length()) {
498 report_error("bad array index");
499 return NULL;
500 }
501 obj = arr->obj_at(index);
502 }
503 } while (obj != NULL);
504 if (obj == NULL) {
505 report_error("null field found");
506 return NULL;
507 }
508 k = obj->klass();
509 }
510 return k;
511 }
512
513 // Parse a valid klass name and look it up
514 // syntax: <name>
515 // syntax: <constant pool ref>
516 Klass* parse_klass(TRAPS) {
517 skip_ws();
518 // check for constant pool object reference (for a dynamic/hidden class)
519 bool cp_ref = (*_bufptr == '@');
520 if (cp_ref) {
521 ++_bufptr;
522 Klass* k = parse_cp_ref(CHECK_NULL);
523 if (k != NULL && !k->is_hidden()) {
524 report_error("expected hidden class");
525 return NULL;
526 }
527 return k;
528 }
529 char* str = parse_escaped_string();
530 Symbol* klass_name = SymbolTable::new_symbol(str);
531 if (klass_name != NULL) {
532 Klass* k = NULL;
533 if (_iklass != NULL) {
534 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
535 } else {
536 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
537 }
538 if (HAS_PENDING_EXCEPTION) {
539 oop throwable = PENDING_EXCEPTION;
540 java_lang_Throwable::print(throwable, tty);
541 tty->cr();
542 report_error(str);
543 if (ReplayIgnoreInitErrors) {
544 CLEAR_PENDING_EXCEPTION;
545 _error_message = NULL;
546 }
547 return NULL;
548 }
549 return k;
550 }
551 return NULL;
552 }
553
554 // Lookup a klass
555 Klass* resolve_klass(const char* klass, TRAPS) {
556 Symbol* klass_name = SymbolTable::new_symbol(klass);
557 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
558 }
559
560 // Parse the standard tuple of <klass> <name> <signature>
561 Method* parse_method(TRAPS) {
562 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
563 if (k == NULL) {
564 report_error("Can't find holder klass");
565 return NULL;
566 }
567 Symbol* method_name = parse_symbol();
568 Symbol* method_signature = parse_symbol();
569 Method* m = k->find_method(method_name, method_signature);
570 if (m == NULL) {
571 report_error("Can't find method");
572 }
573 return m;
574 }
575
576 int get_line(int c) {
577 while(c != EOF) {
578 if (_buffer_pos + 1 >= _buffer_length) {
579 int new_length = _buffer_length * 2;
580 // Next call will throw error in case of OOM.
581 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
582 _buffer_length = new_length;
583 }
584 if (c == '\n') {
585 c = getc(_stream); // get next char
586 break;
587 } else if (c == '\r') {
588 // skip LF
589 } else {
590 _buffer[_buffer_pos++] = c;
591 }
592 c = getc(_stream);
593 }
594 // null terminate it, reset the pointer
595 _buffer[_buffer_pos] = '\0'; // NL or EOF
596 _buffer_pos = 0;
597 _bufptr = _buffer;
598 return c;
599 }
600
601 // Process each line of the replay file executing each command until
602 // the file ends.
603 void process(TRAPS) {
604 int line_no = 1;
605 int c = getc(_stream);
606 while(c != EOF) {
607 c = get_line(c);
608 process_command(THREAD);
609 if (had_error()) {
610 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
611 if (ReplayIgnoreInitErrors) {
612 CLEAR_PENDING_EXCEPTION;
613 _error_message = NULL;
614 } else {
615 return;
616 }
617 }
618 line_no++;
619 }
620 }
621
622 void process_command(TRAPS) {
623 char* cmd = parse_string();
624 if (cmd == NULL) {
625 return;
626 }
627 if (strcmp("#", cmd) == 0) {
628 // ignore
629 } else if (strcmp("compile", cmd) == 0) {
630 process_compile(CHECK);
631 } else if (strcmp("ciMethod", cmd) == 0) {
632 process_ciMethod(CHECK);
633 } else if (strcmp("ciMethodData", cmd) == 0) {
634 process_ciMethodData(CHECK);
635 } else if (strcmp("staticfield", cmd) == 0) {
636 process_staticfield(CHECK);
637 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
638 process_ciInstanceKlass(CHECK);
639 } else if (strcmp("instanceKlass", cmd) == 0) {
640 process_instanceKlass(CHECK);
641 #if INCLUDE_JVMTI
642 } else if (strcmp("JvmtiExport", cmd) == 0) {
643 process_JvmtiExport(CHECK);
644 #endif // INCLUDE_JVMTI
645 } else {
646 report_error("unknown command");
647 }
648 }
649
650 // validation of comp_level
651 bool is_valid_comp_level(int comp_level) {
652 const int msg_len = 256;
653 char* msg = NULL;
654 if (!is_compile(comp_level)) {
655 msg = NEW_RESOURCE_ARRAY(char, msg_len);
656 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
657 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
658 msg = NEW_RESOURCE_ARRAY(char, msg_len);
659 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
660 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
661 msg = NEW_RESOURCE_ARRAY(char, msg_len);
662 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
663 }
664 if (msg != NULL) {
665 report_error(msg);
666 return false;
667 }
668 return true;
669 }
670
671 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
672 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
673 _imethod = m;
674 _iklass = imethod->holder();
675 _entry_bci = entry_bci;
676 _comp_level = comp_level;
677 int line_no = 1;
678 int c = getc(_stream);
679 while(c != EOF) {
680 c = get_line(c);
681 // Expecting only lines with "compile" command in inline replay file.
682 char* cmd = parse_string();
683 if (cmd == NULL || strcmp("compile", cmd) != 0) {
684 return NULL;
685 }
686 process_compile(CHECK_NULL);
687 if (had_error()) {
688 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
689 tty->print_cr("%s", _buffer);
690 return NULL;
691 }
692 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
693 // Found inlining record for the requested method.
694 return _ci_inline_records;
695 }
696 line_no++;
697 }
698 return NULL;
699 }
700
701 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
702 void process_compile(TRAPS) {
703 Method* method = parse_method(CHECK);
704 if (had_error()) return;
705 int entry_bci = parse_int("entry_bci");
706 const char* comp_level_label = "comp_level";
707 int comp_level = parse_int(comp_level_label);
708 // old version w/o comp_level
709 if (had_error() && (error_message() == comp_level_label)) {
710 // use highest available tier
711 comp_level = CompilationPolicy::highest_compile_level();
712 }
713 if (!is_valid_comp_level(comp_level)) {
714 return;
715 }
716 if (_imethod != NULL) {
717 // Replay Inlining
718 if (entry_bci != _entry_bci || comp_level != _comp_level) {
719 return;
720 }
721 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
722 const char* imethod_name = _imethod->name()->as_utf8();
723 const char* isignature = _imethod->signature()->as_utf8();
724 const char* klass_name = method->method_holder()->name()->as_utf8();
725 const char* method_name = method->name()->as_utf8();
726 const char* signature = method->signature()->as_utf8();
727 if (strcmp(iklass_name, klass_name) != 0 ||
728 strcmp(imethod_name, method_name) != 0 ||
729 strcmp(isignature, signature) != 0) {
730 return;
731 }
732 }
733 int inline_count = 0;
734 if (parse_tag_and_count("inline", inline_count)) {
735 // Record inlining data
736 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
737 for (int i = 0; i < inline_count; i++) {
738 int depth = parse_int("inline_depth");
739 int bci = parse_int("inline_bci");
740 if (had_error()) {
741 break;
742 }
743 Method* inl_method = parse_method(CHECK);
744 if (had_error()) {
745 break;
746 }
747 new_ciInlineRecord(inl_method, bci, depth);
748 }
749 }
750 if (_imethod != NULL) {
751 return; // Replay Inlining
752 }
753 InstanceKlass* ik = method->method_holder();
754 ik->initialize(THREAD);
755 if (HAS_PENDING_EXCEPTION) {
756 oop throwable = PENDING_EXCEPTION;
757 java_lang_Throwable::print(throwable, tty);
758 tty->cr();
759 if (ReplayIgnoreInitErrors) {
760 CLEAR_PENDING_EXCEPTION;
761 ik->set_init_state(InstanceKlass::fully_initialized);
762 } else {
763 return;
764 }
765 }
766 // Make sure the existence of a prior compile doesn't stop this one
767 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
768 if (nm != NULL) {
769 nm->make_not_entrant();
770 }
771 replay_state = this;
772 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
773 methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
774 replay_state = NULL;
775 reset();
776 }
777
778 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
779 void process_ciMethod(TRAPS) {
780 Method* method = parse_method(CHECK);
781 if (had_error()) return;
782 ciMethodRecord* rec = new_ciMethod(method);
783 rec->_invocation_counter = parse_int("invocation_counter");
784 rec->_backedge_counter = parse_int("backedge_counter");
785 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
786 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
787 rec->_instructions_size = parse_int("instructions_size");
788 }
789
790 // ciMethodData <klass> <name> <signature> <state> <current_mileage> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
791 void process_ciMethodData(TRAPS) {
792 Method* method = parse_method(CHECK);
793 if (had_error()) return;
794 /* just copied from Method, to build interpret data*/
795
796 // To be properly initialized, some profiling in the MDO needs the
797 // method to be rewritten (number of arguments at a call for
798 // instance)
799 method->method_holder()->link_class(CHECK);
800 // Method::build_interpreter_method_data(method, CHECK);
801 {
802 // Grab a lock here to prevent multiple
803 // MethodData*s from being created.
804 MutexLocker ml(THREAD, MethodData_lock);
805 if (method->method_data() == NULL) {
806 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
807 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK);
808 method->set_method_data(method_data);
809 }
810 }
811
812 // collect and record all the needed information for later
813 ciMethodDataRecord* rec = new_ciMethodData(method);
814 rec->_state = parse_int("state");
815 rec->_current_mileage = parse_int("current_mileage");
816
817 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
818 if (rec->_orig_data == NULL) {
819 return;
820 }
821 rec->_data = parse_intptr_data("data", rec->_data_length);
822 if (rec->_data == NULL) {
823 return;
824 }
825 if (!parse_tag_and_count("oops", rec->_classes_length)) {
826 return;
827 }
828 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
829 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
830 for (int i = 0; i < rec->_classes_length; i++) {
831 int offset = parse_int("offset");
832 if (had_error()) {
833 return;
834 }
835 Klass* k = parse_klass(CHECK);
836 rec->_classes_offsets[i] = offset;
837 rec->_classes[i] = k;
838 }
839
840 if (!parse_tag_and_count("methods", rec->_methods_length)) {
841 return;
842 }
843 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
844 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
845 for (int i = 0; i < rec->_methods_length; i++) {
846 int offset = parse_int("offset");
847 if (had_error()) {
848 return;
849 }
850 Method* m = parse_method(CHECK);
851 rec->_methods_offsets[i] = offset;
852 rec->_methods[i] = m;
853 }
854 }
855
856 // instanceKlass <name>
857 // instanceKlass <constant pool ref> # <original hidden class name>
858 //
859 // Loads and initializes the klass 'name'. This can be used to
860 // create particular class loading environments
861 void process_instanceKlass(TRAPS) {
862 // just load the referenced class
863 Klass* k = parse_klass(CHECK);
864 if (k == NULL) {
865 return;
866 }
867 const char* comment = parse_string();
868 bool is_comment = comment != NULL && strcmp(comment, "#") == 0;
869 if (k->is_hidden() != is_comment) {
870 report_error("hidden class with comment expected");
871 return;
872 }
873 if (is_comment && Verbose) {
874 const char* hidden = parse_string();
875 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
876 }
877 }
878
879 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
880 //
881 // Load the klass 'name' and link or initialize it. Verify that the
882 // constant pool is the same length as 'length' and make sure the
883 // constant pool tags are in the same state.
884 void process_ciInstanceKlass(TRAPS) {
885 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
886 if (k == NULL) {
887 return;
888 }
889 int is_linked = parse_int("is_linked");
890 int is_initialized = parse_int("is_initialized");
891 int length = parse_int("length");
892 if (is_initialized) {
893 k->initialize(THREAD);
894 if (HAS_PENDING_EXCEPTION) {
895 oop throwable = PENDING_EXCEPTION;
896 java_lang_Throwable::print(throwable, tty);
897 tty->cr();
898 if (ReplayIgnoreInitErrors) {
899 CLEAR_PENDING_EXCEPTION;
900 k->set_init_state(InstanceKlass::fully_initialized);
901 } else {
902 return;
903 }
904 }
905 } else if (is_linked) {
906 k->link_class(CHECK);
907 }
908 ConstantPool* cp = k->constants();
909 if (length != cp->length()) {
910 report_error("constant pool length mismatch: wrong class files?");
911 return;
912 }
913
914 int parsed_two_word = 0;
915 for (int i = 1; i < length; i++) {
916 int tag = parse_int("tag");
917 if (had_error()) {
918 return;
919 }
920 switch (cp->tag_at(i).value()) {
921 case JVM_CONSTANT_UnresolvedClass: {
922 if (tag == JVM_CONSTANT_Class) {
923 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
924 Klass* k = cp->klass_at(i, CHECK);
925 }
926 break;
927 }
928 case JVM_CONSTANT_Long:
929 case JVM_CONSTANT_Double:
930 parsed_two_word = i + 1;
931
932 case JVM_CONSTANT_ClassIndex:
933 case JVM_CONSTANT_StringIndex:
934 case JVM_CONSTANT_String:
935 case JVM_CONSTANT_UnresolvedClassInError:
936 case JVM_CONSTANT_Fieldref:
937 case JVM_CONSTANT_Methodref:
938 case JVM_CONSTANT_InterfaceMethodref:
939 case JVM_CONSTANT_NameAndType:
940 case JVM_CONSTANT_Utf8:
941 case JVM_CONSTANT_Integer:
942 case JVM_CONSTANT_Float:
943 case JVM_CONSTANT_MethodHandle:
944 case JVM_CONSTANT_MethodType:
945 case JVM_CONSTANT_Dynamic:
946 case JVM_CONSTANT_InvokeDynamic:
947 if (tag != cp->tag_at(i).value()) {
948 report_error("tag mismatch: wrong class files?");
949 return;
950 }
951 break;
952
953 case JVM_CONSTANT_Class:
954 if (tag == JVM_CONSTANT_Class) {
955 } else if (tag == JVM_CONSTANT_UnresolvedClass) {
956 tty->print_cr("Warning: entry was unresolved in the replay data");
957 } else {
958 report_error("Unexpected tag");
959 return;
960 }
961 break;
962
963 case 0:
964 if (parsed_two_word == i) continue;
965
966 default:
967 fatal("Unexpected tag: %d", cp->tag_at(i).value());
968 break;
969 }
970
971 }
972 }
973
974 // staticfield <klass> <name> <signature> <value>
975 //
976 // Initialize a class and fill in the value for a static field.
977 // This is useful when the compile was dependent on the value of
978 // static fields but it's impossible to properly rerun the static
979 // initializer.
980 void process_staticfield(TRAPS) {
981 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
982
983 if (k == NULL || ReplaySuppressInitializers == 0 ||
984 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) {
985 return;
986 }
987
988 assert(k->is_initialized(), "must be");
989
990 const char* field_name = parse_escaped_string();
991 const char* field_signature = parse_string();
992 fieldDescriptor fd;
993 Symbol* name = SymbolTable::new_symbol(field_name);
994 Symbol* sig = SymbolTable::new_symbol(field_signature);
995 if (!k->find_local_field(name, sig, &fd) ||
996 !fd.is_static() ||
997 fd.has_initial_value()) {
998 report_error(field_name);
999 return;
1000 }
1001
1002 oop java_mirror = k->java_mirror();
1003 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1004 int length = parse_int("array length");
1005 oop value = NULL;
1006
1007 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1008 // multi dimensional array
1009 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1010 if (kelem == NULL) {
1011 return;
1012 }
1013 int rank = 0;
1014 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1015 rank++;
1016 }
1017 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1018 dims[0] = length;
1019 for (int i = 1; i < rank; i++) {
1020 dims[i] = 1; // These aren't relevant to the compiler
1021 }
1022 value = kelem->multi_allocate(rank, dims, CHECK);
1023 } else {
1024 if (strcmp(field_signature, "[B") == 0) {
1025 value = oopFactory::new_byteArray(length, CHECK);
1026 } else if (strcmp(field_signature, "[Z") == 0) {
1027 value = oopFactory::new_boolArray(length, CHECK);
1028 } else if (strcmp(field_signature, "[C") == 0) {
1029 value = oopFactory::new_charArray(length, CHECK);
1030 } else if (strcmp(field_signature, "[S") == 0) {
1031 value = oopFactory::new_shortArray(length, CHECK);
1032 } else if (strcmp(field_signature, "[F") == 0) {
1033 value = oopFactory::new_floatArray(length, CHECK);
1034 } else if (strcmp(field_signature, "[D") == 0) {
1035 value = oopFactory::new_doubleArray(length, CHECK);
1036 } else if (strcmp(field_signature, "[I") == 0) {
1037 value = oopFactory::new_intArray(length, CHECK);
1038 } else if (strcmp(field_signature, "[J") == 0) {
1039 value = oopFactory::new_longArray(length, CHECK);
1040 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1041 field_signature[1] == JVM_SIGNATURE_CLASS) {
1042 Klass* kelem = resolve_klass(field_signature + 1, CHECK);
1043 value = oopFactory::new_objArray(kelem, length, CHECK);
1044 } else {
1045 report_error("unhandled array staticfield");
1046 }
1047 }
1048 java_mirror->obj_field_put(fd.offset(), value);
1049 } else {
1050 const char* string_value = parse_escaped_string();
1051 if (strcmp(field_signature, "I") == 0) {
1052 int value = atoi(string_value);
1053 java_mirror->int_field_put(fd.offset(), value);
1054 } else if (strcmp(field_signature, "B") == 0) {
1055 int value = atoi(string_value);
1056 java_mirror->byte_field_put(fd.offset(), value);
1057 } else if (strcmp(field_signature, "C") == 0) {
1058 int value = atoi(string_value);
1059 java_mirror->char_field_put(fd.offset(), value);
1060 } else if (strcmp(field_signature, "S") == 0) {
1061 int value = atoi(string_value);
1062 java_mirror->short_field_put(fd.offset(), value);
1063 } else if (strcmp(field_signature, "Z") == 0) {
1064 int value = atoi(string_value);
1065 java_mirror->bool_field_put(fd.offset(), value);
1066 } else if (strcmp(field_signature, "J") == 0) {
1067 jlong value;
1068 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1069 fprintf(stderr, "Error parsing long: %s\n", string_value);
1070 return;
1071 }
1072 java_mirror->long_field_put(fd.offset(), value);
1073 } else if (strcmp(field_signature, "F") == 0) {
1074 float value = atof(string_value);
1075 java_mirror->float_field_put(fd.offset(), value);
1076 } else if (strcmp(field_signature, "D") == 0) {
1077 double value = atof(string_value);
1078 java_mirror->double_field_put(fd.offset(), value);
1079 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1080 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1081 java_mirror->obj_field_put(fd.offset(), value());
1082 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1083 Klass* k = resolve_klass(string_value, CHECK);
1084 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1085 java_mirror->obj_field_put(fd.offset(), value);
1086 } else {
1087 report_error("unhandled staticfield");
1088 }
1089 }
1090 }
1091
1092 #if INCLUDE_JVMTI
1093 // JvmtiExport <field> <value>
1094 void process_JvmtiExport(TRAPS) {
1095 const char* field = parse_string();
1096 bool value = parse_int("JvmtiExport flag") != 0;
1097 if (strcmp(field, "can_access_local_variables") == 0) {
1098 JvmtiExport::set_can_access_local_variables(value);
1099 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1100 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1101 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1102 JvmtiExport::set_can_post_on_exceptions(value);
1103 } else {
1104 report_error("Unrecognized JvmtiExport directive");
1105 }
1106 }
1107 #endif // INCLUDE_JVMTI
1108
1109 // Create and initialize a record for a ciMethod
1110 ciMethodRecord* new_ciMethod(Method* method) {
1111 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1112 rec->_klass_name = method->method_holder()->name()->as_utf8();
1113 rec->_method_name = method->name()->as_utf8();
1114 rec->_signature = method->signature()->as_utf8();
1115 _ci_method_records.append(rec);
1116 return rec;
1117 }
1118
1119 // Lookup data for a ciMethod
1120 ciMethodRecord* find_ciMethodRecord(Method* method) {
1121 const char* klass_name = method->method_holder()->name()->as_utf8();
1122 const char* method_name = method->name()->as_utf8();
1123 const char* signature = method->signature()->as_utf8();
1124 for (int i = 0; i < _ci_method_records.length(); i++) {
1125 ciMethodRecord* rec = _ci_method_records.at(i);
1126 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1127 strcmp(rec->_method_name, method_name) == 0 &&
1128 strcmp(rec->_signature, signature) == 0) {
1129 return rec;
1130 }
1131 }
1132 return NULL;
1133 }
1134
1135 // Create and initialize a record for a ciMethodData
1136 ciMethodDataRecord* new_ciMethodData(Method* method) {
1137 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1138 rec->_klass_name = method->method_holder()->name()->as_utf8();
1139 rec->_method_name = method->name()->as_utf8();
1140 rec->_signature = method->signature()->as_utf8();
1141 _ci_method_data_records.append(rec);
1142 return rec;
1143 }
1144
1145 // Lookup data for a ciMethodData
1146 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1147 const char* klass_name = method->method_holder()->name()->as_utf8();
1148 const char* method_name = method->name()->as_utf8();
1149 const char* signature = method->signature()->as_utf8();
1150 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1151 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1152 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1153 strcmp(rec->_method_name, method_name) == 0 &&
1154 strcmp(rec->_signature, signature) == 0) {
1155 return rec;
1156 }
1157 }
1158 return NULL;
1159 }
1160
1161 // Create and initialize a record for a ciInlineRecord
1162 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) {
1163 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1164 rec->_klass_name = method->method_holder()->name()->as_utf8();
1165 rec->_method_name = method->name()->as_utf8();
1166 rec->_signature = method->signature()->as_utf8();
1167 rec->_inline_bci = bci;
1168 rec->_inline_depth = depth;
1169 _ci_inline_records->append(rec);
1170 return rec;
1171 }
1172
1173 // Lookup inlining data for a ciMethod
1174 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1175 if (_ci_inline_records != NULL) {
1176 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1177 }
1178 return NULL;
1179 }
1180
1181 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1182 Method* method, int bci, int depth) {
1183 if (records != NULL) {
1184 const char* klass_name = method->method_holder()->name()->as_utf8();
1185 const char* method_name = method->name()->as_utf8();
1186 const char* signature = method->signature()->as_utf8();
1187 for (int i = 0; i < records->length(); i++) {
1188 ciInlineRecord* rec = records->at(i);
1189 if ((rec->_inline_bci == bci) &&
1190 (rec->_inline_depth == depth) &&
1191 (strcmp(rec->_klass_name, klass_name) == 0) &&
1192 (strcmp(rec->_method_name, method_name) == 0) &&
1193 (strcmp(rec->_signature, signature) == 0)) {
1194 return rec;
1195 }
1196 }
1197 }
1198 return NULL;
1199 }
1200
1201 const char* error_message() {
1202 return _error_message;
1203 }
1204
1205 void reset() {
1206 _error_message = NULL;
1207 _ci_method_records.clear();
1208 _ci_method_data_records.clear();
1209 }
1210
1211 // Take an ascii string contain \u#### escapes and convert it to utf8
1212 // in place.
1213 static void unescape_string(char* value) {
1214 char* from = value;
1215 char* to = value;
1216 while (*from != '\0') {
1217 if (*from != '\\') {
1218 *from++ = *to++;
1219 } else {
1220 switch (from[1]) {
1221 case 'u': {
1222 from += 2;
1223 jchar value=0;
1224 for (int i=0; i<4; i++) {
1225 char c = *from++;
1226 switch (c) {
1227 case '0': case '1': case '2': case '3': case '4':
1228 case '5': case '6': case '7': case '8': case '9':
1229 value = (value << 4) + c - '0';
1230 break;
1231 case 'a': case 'b': case 'c':
1232 case 'd': case 'e': case 'f':
1233 value = (value << 4) + 10 + c - 'a';
1234 break;
1235 case 'A': case 'B': case 'C':
1236 case 'D': case 'E': case 'F':
1237 value = (value << 4) + 10 + c - 'A';
1238 break;
1239 default:
1240 ShouldNotReachHere();
1241 }
1242 }
1243 UNICODE::convert_to_utf8(&value, 1, to);
1244 to++;
1245 break;
1246 }
1247 case 't': *to++ = '\t'; from += 2; break;
1248 case 'n': *to++ = '\n'; from += 2; break;
1249 case 'r': *to++ = '\r'; from += 2; break;
1250 case 'f': *to++ = '\f'; from += 2; break;
1251 default:
1252 ShouldNotReachHere();
1253 }
1254 }
1255 }
1256 *from = *to;
1257 }
1258 };
1259
1260 void ciReplay::replay(TRAPS) {
1261 int exit_code = replay_impl(THREAD);
1262
1263 Threads::destroy_vm();
1264
1265 vm_exit(exit_code);
1266 }
1267
1268 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1269 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1270 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1271 return NULL;
1272 }
1273
1274 VM_ENTRY_MARK;
1275 // Load and parse the replay data
1276 CompileReplay rp(InlineDataFile, THREAD);
1277 if (!rp.can_replay()) {
1278 tty->print_cr("ciReplay: !rp.can_replay()");
1279 return NULL;
1280 }
1281 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1282 if (HAS_PENDING_EXCEPTION) {
1283 Handle throwable(THREAD, PENDING_EXCEPTION);
1284 CLEAR_PENDING_EXCEPTION;
1285 java_lang_Throwable::print_stack_trace(throwable, tty);
1286 tty->cr();
1287 return NULL;
1288 }
1289
1290 if (rp.had_error()) {
1291 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1292 return NULL;
1293 }
1294 return data;
1295 }
1296
1297 int ciReplay::replay_impl(TRAPS) {
1298 HandleMark hm(THREAD);
1299 ResourceMark rm(THREAD);
1300
1301 if (ReplaySuppressInitializers > 2) {
1302 // ReplaySuppressInitializers > 2 means that we want to allow
1303 // normal VM bootstrap but once we get into the replay itself
1304 // don't allow any intializers to be run.
1305 ReplaySuppressInitializers = 1;
1306 }
1307
1308 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1309 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1310 return 1;
1311 }
1312
1313 // Load and parse the replay data
1314 CompileReplay rp(ReplayDataFile, THREAD);
1315 int exit_code = 0;
1316 if (rp.can_replay()) {
1317 rp.process(THREAD);
1318 } else {
1319 exit_code = 1;
1320 return exit_code;
1321 }
1322
1323 if (HAS_PENDING_EXCEPTION) {
1324 Handle throwable(THREAD, PENDING_EXCEPTION);
1325 CLEAR_PENDING_EXCEPTION;
1326 java_lang_Throwable::print_stack_trace(throwable, tty);
1327 tty->cr();
1328 exit_code = 2;
1329 }
1330
1331 if (rp.had_error()) {
1332 tty->print_cr("Failed on %s", rp.error_message());
1333 exit_code = 1;
1334 }
1335 return exit_code;
1336 }
1337
1338 void ciReplay::initialize(ciMethodData* m) {
1339 if (replay_state == NULL) {
1340 return;
1341 }
1342
1343 ASSERT_IN_VM;
1344 ResourceMark rm;
1345
1346 Method* method = m->get_MethodData()->method();
1347 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1348 if (rec == NULL) {
1349 // This indicates some mismatch with the original environment and
1350 // the replay environment though it's not always enough to
1351 // interfere with reproducing a bug
1352 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1353 method->print_name(tty);
1354 tty->cr();
1355 } else {
1356 m->_state = rec->_state;
1357 m->_current_mileage = rec->_current_mileage;
1358 if (rec->_data_length != 0) {
1359 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1360 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1361
1362 // Write the correct ciObjects back into the profile data
1363 ciEnv* env = ciEnv::current();
1364 for (int i = 0; i < rec->_classes_length; i++) {
1365 Klass *k = rec->_classes[i];
1366 // In case this class pointer is is tagged, preserve the tag bits
1367 intptr_t status = 0;
1368 if (k != NULL) {
1369 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1370 }
1371 rec->_data[rec->_classes_offsets[i]] = status;
1372 }
1373 for (int i = 0; i < rec->_methods_length; i++) {
1374 Method *m = rec->_methods[i];
1375 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1376 env->get_metadata(m);
1377 }
1378 // Copy the updated profile data into place as intptr_ts
1379 #ifdef _LP64
1380 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1381 #else
1382 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1383 #endif
1384 }
1385
1386 // copy in the original header
1387 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1388 }
1389 }
1390
1391
1392 bool ciReplay::should_not_inline(ciMethod* method) {
1393 if (replay_state == NULL) {
1394 return false;
1395 }
1396 VM_ENTRY_MARK;
1397 // ciMethod without a record shouldn't be inlined.
1398 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1399 }
1400
1401 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1402 if (data != NULL) {
1403 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1404 VM_ENTRY_MARK;
1405 // Inline record are ordered by bci and depth.
1406 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL;
1407 } else if (replay_state != NULL) {
1408 VM_ENTRY_MARK;
1409 // Inline record are ordered by bci and depth.
1410 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL;
1411 }
1412 return false;
1413 }
1414
1415 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1416 if (data != NULL) {
1417 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1418 VM_ENTRY_MARK;
1419 // Inline record are ordered by bci and depth.
1420 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1421 } else if (replay_state != NULL) {
1422 VM_ENTRY_MARK;
1423 // Inline record are ordered by bci and depth.
1424 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1425 }
1426 return false;
1427 }
1428
1429 void ciReplay::initialize(ciMethod* m) {
1430 if (replay_state == NULL) {
1431 return;
1432 }
1433
1434 ASSERT_IN_VM;
1435 ResourceMark rm;
1436
1437 Method* method = m->get_Method();
1438 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1439 if (rec == NULL) {
1440 // This indicates some mismatch with the original environment and
1441 // the replay environment though it's not always enough to
1442 // interfere with reproducing a bug
1443 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1444 method->print_name(tty);
1445 tty->cr();
1446 } else {
1447 EXCEPTION_CONTEXT;
1448 // m->_instructions_size = rec->_instructions_size;
1449 m->_instructions_size = -1;
1450 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1451 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1452 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1453 guarantee(mcs != NULL, "method counters allocation failed");
1454 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1455 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1456 }
1457 }
1458
1459 bool ciReplay::is_loaded(Method* method) {
1460 if (replay_state == NULL) {
1461 return true;
1462 }
1463
1464 ASSERT_IN_VM;
1465 ResourceMark rm;
1466
1467 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1468 return rec != NULL;
1469 }
1470 #endif // PRODUCT
1471
1472 oop ciReplay::obj_field(oop obj, Symbol* name) {
1473 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1474
1475 do {
1476 if (!ik->has_nonstatic_fields()) {
1477 ik = ik->java_super();
1478 continue;
1479 }
1480
1481 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1482 if (fs.access_flags().is_static()) {
1483 continue;
1484 }
1485 if (fs.name() == name) {
1486 int offset = fs.offset();
1487 #ifdef ASSERT
1488 fieldDescriptor fd = fs.field_descriptor();
1489 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1490 #endif
1491 oop f = obj->obj_field(offset);
1492 return f;
1493 }
1494 }
1495
1496 ik = ik->java_super();
1497 } while (ik != NULL);
1498 return NULL;
1499 }
1500
1501 oop ciReplay::obj_field(oop obj, const char *name) {
1502 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1503 if (fname == NULL) {
1504 return NULL;
1505 }
1506 return obj_field(obj, fname);
1507 }