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 "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/jniHandles.inline.hpp"
53 #include "runtime/java.hpp"
54 #include "utilities/copy.hpp"
55 #include "utilities/macros.hpp"
56 #include "utilities/utf8.hpp"
57
58 #ifndef PRODUCT
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(caller, bci);
402 int index = bytecode.index();
403
404 ConstantPoolCacheEntry* cp_cache_entry = NULL;
405 CallInfo callInfo;
406 Bytecodes::Code bc = bytecode.invoke_code();
407 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
408 if (bytecode.is_invokedynamic()) {
409 cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index);
410 cp_cache_entry->set_dynamic_call(cp, callInfo);
411 } else if (bytecode.is_invokehandle()) {
412 #ifdef ASSERT
413 Klass* holder = cp->klass_ref_at(index, CHECK_NULL);
414 Symbol* name = cp->name_ref_at(index);
415 assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
416 #endif
417 cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
418 cp_cache_entry->set_method_handle(cp, callInfo);
419 } else {
420 report_error("no dynamic invoke found");
421 return NULL;
422 }
423 char* dyno_ref = parse_string();
424 if (strcmp(dyno_ref, "<appendix>") == 0) {
425 obj = cp_cache_entry->appendix_if_resolved(cp);
426 } else if (strcmp(dyno_ref, "<adapter>") == 0) {
427 if (!parse_terminator()) {
428 report_error("no dynamic invoke found");
429 return NULL;
430 }
431 Method* adapter = cp_cache_entry->f1_as_method();
432 if (adapter == NULL) {
433 report_error("no adapter found");
434 return NULL;
435 }
436 return adapter->method_holder();
437 } else if (strcmp(dyno_ref, "<bsm>") == 0) {
438 int pool_index = cp_cache_entry->constant_pool_index();
439 BootstrapInfo bootstrap_specifier(cp, pool_index, index);
440 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL);
441 } else {
442 report_error("unrecognized token");
443 return NULL;
444 }
445 } else {
446 // constant pool ref (MethodHandle)
447 if (strcmp(ref, "cpi") != 0) {
448 report_error("unexpected token");
449 return NULL;
450 }
451
452 Klass* k = parse_klass(CHECK_NULL);
453 if (k == NULL) {
454 return NULL;
455 }
456 InstanceKlass* ik = InstanceKlass::cast(k);
457 const constantPoolHandle cp(Thread::current(), ik->constants());
458
459 int cpi = parse_int("cpi");
460
461 if (cpi >= cp->length()) {
462 report_error("bad cpi");
463 return NULL;
464 }
465 if (!cp->tag_at(cpi).is_method_handle()) {
466 report_error("no method handle found at cpi");
467 return NULL;
468 }
469 ik->link_class(CHECK_NULL);
470 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL);
471 }
472 if (obj == NULL) {
473 report_error("null cp object found");
474 return NULL;
475 }
476 Klass* k = NULL;
477 skip_ws();
478 // loop: read fields
479 char* field = NULL;
480 do {
481 field = parse_string();
482 if (field == NULL) {
483 report_error("no field found");
484 return NULL;
485 }
486 if (strcmp(field, ";") == 0) {
487 break;
488 }
489 // raw Method*
490 if (strcmp(field, "<vmtarget>") == 0) {
491 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
492 k = (vmtarget == NULL) ? NULL : vmtarget->method_holder();
493 if (k == NULL) {
494 report_error("null vmtarget found");
495 return NULL;
496 }
497 if (!parse_terminator()) {
498 report_error("missing terminator");
499 return NULL;
500 }
501 return k;
502 }
503 obj = ciReplay::obj_field(obj, field);
504 // array
505 if (obj != NULL && obj->is_objArray()) {
506 objArrayOop arr = (objArrayOop)obj;
507 int index = parse_int("index");
508 if (index >= arr->length()) {
509 report_error("bad array index");
510 return NULL;
511 }
512 obj = arr->obj_at(index);
513 }
514 } while (obj != NULL);
515 if (obj == NULL) {
516 report_error("null field found");
517 return NULL;
518 }
519 k = obj->klass();
520 return k;
521 }
522
523 // Parse a valid klass name and look it up
524 // syntax: <name>
525 // syntax: <constant pool ref>
526 Klass* parse_klass(TRAPS) {
527 skip_ws();
528 // check for constant pool object reference (for a dynamic/hidden class)
529 bool cp_ref = (*_bufptr == '@');
530 if (cp_ref) {
531 ++_bufptr;
532 Klass* k = parse_cp_ref(CHECK_NULL);
533 if (k != NULL && !k->is_hidden()) {
534 report_error("expected hidden class");
535 return NULL;
536 }
537 return k;
538 }
539 char* str = parse_escaped_string();
540 Symbol* klass_name = SymbolTable::new_symbol(str);
541 if (klass_name != NULL) {
542 Klass* k = NULL;
543 if (_iklass != NULL) {
544 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
545 } else {
546 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
547 }
548 if (HAS_PENDING_EXCEPTION) {
549 oop throwable = PENDING_EXCEPTION;
550 java_lang_Throwable::print(throwable, tty);
551 tty->cr();
552 report_error(str);
553 if (ReplayIgnoreInitErrors) {
554 CLEAR_PENDING_EXCEPTION;
555 _error_message = NULL;
556 }
557 return NULL;
558 }
559 return k;
560 }
561 return NULL;
562 }
563
564 // Lookup a klass
565 Klass* resolve_klass(const char* klass, TRAPS) {
566 Symbol* klass_name = SymbolTable::new_symbol(klass);
567 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
568 }
569
570 // Parse the standard tuple of <klass> <name> <signature>
571 Method* parse_method(TRAPS) {
572 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
573 if (k == NULL) {
574 report_error("Can't find holder klass");
575 return NULL;
576 }
577 Symbol* method_name = parse_symbol();
578 Symbol* method_signature = parse_symbol();
579 Method* m = k->find_method(method_name, method_signature);
580 if (m == NULL) {
581 report_error("Can't find method");
582 }
583 return m;
584 }
585
586 int get_line(int c) {
587 int buffer_pos = 0;
588 while(c != EOF) {
589 if (buffer_pos + 1 >= _buffer_length) {
590 int new_length = _buffer_length * 2;
591 // Next call will throw error in case of OOM.
592 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
593 _buffer_length = new_length;
594 }
595 if (c == '\n') {
596 c = getc(_stream); // get next char
597 break;
598 } else if (c == '\r') {
599 // skip LF
600 } else {
601 _buffer[buffer_pos++] = c;
602 }
603 c = getc(_stream);
604 }
605 // null terminate it, reset the pointer
606 _buffer[buffer_pos] = '\0'; // NL or EOF
607 _bufptr = _buffer;
608 return c;
609 }
610
611 // Process each line of the replay file executing each command until
612 // the file ends.
613 void process(TRAPS) {
614 int line_no = 1;
615 int c = getc(_stream);
616 while(c != EOF) {
617 c = get_line(c);
618 process_command(THREAD);
619 if (had_error()) {
620 int pos = _bufptr - _buffer + 1;
621 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
622 if (ReplayIgnoreInitErrors) {
623 CLEAR_PENDING_EXCEPTION;
624 _error_message = NULL;
625 } else {
626 return;
627 }
628 }
629 line_no++;
630 }
631 }
632
633 void process_command(TRAPS) {
634 char* cmd = parse_string();
635 if (cmd == NULL) {
636 return;
637 }
638 if (strcmp("#", cmd) == 0) {
639 // comment line, print or ignore
640 if (Verbose) {
641 tty->print_cr("# %s", _bufptr);
642 }
643 skip_remaining();
644 } else if (strcmp("version", cmd) == 0) {
645 _version = parse_int("version");
646 if (_version < 0 || _version > REPLAY_VERSION) {
647 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
648 }
649 } else if (strcmp("compile", cmd) == 0) {
650 process_compile(CHECK);
651 } else if (strcmp("ciMethod", cmd) == 0) {
652 process_ciMethod(CHECK);
653 } else if (strcmp("ciMethodData", cmd) == 0) {
654 process_ciMethodData(CHECK);
655 } else if (strcmp("staticfield", cmd) == 0) {
656 process_staticfield(CHECK);
657 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
658 process_ciInstanceKlass(CHECK);
659 } else if (strcmp("instanceKlass", cmd) == 0) {
660 process_instanceKlass(CHECK);
661 #if INCLUDE_JVMTI
662 } else if (strcmp("JvmtiExport", cmd) == 0) {
663 process_JvmtiExport(CHECK);
664 #endif // INCLUDE_JVMTI
665 } else {
666 report_error("unknown command");
667 }
668 if (!had_error() && *_bufptr != '\0') {
669 report_error("line not properly terminated");
670 }
671 }
672
673 // validation of comp_level
674 bool is_valid_comp_level(int comp_level) {
675 const int msg_len = 256;
676 char* msg = NULL;
677 if (!is_compile(comp_level)) {
678 msg = NEW_RESOURCE_ARRAY(char, msg_len);
679 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
680 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
681 msg = NEW_RESOURCE_ARRAY(char, msg_len);
682 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
683 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
684 msg = NEW_RESOURCE_ARRAY(char, msg_len);
685 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
686 }
687 if (msg != NULL) {
688 report_error(msg);
689 return false;
690 }
691 return true;
692 }
693
694 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
695 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
696 _imethod = m;
697 _iklass = imethod->holder();
698 _entry_bci = entry_bci;
699 _comp_level = comp_level;
700 int line_no = 1;
701 int c = getc(_stream);
702 while(c != EOF) {
703 c = get_line(c);
704 // Expecting only lines with "compile" command in inline replay file.
705 char* cmd = parse_string();
706 if (cmd == NULL || strcmp("compile", cmd) != 0) {
707 return NULL;
708 }
709 process_compile(CHECK_NULL);
710 if (had_error()) {
711 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
712 tty->print_cr("%s", _buffer);
713 return NULL;
714 }
715 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
716 // Found inlining record for the requested method.
717 return _ci_inline_records;
718 }
719 line_no++;
720 }
721 return NULL;
722 }
723
724 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
725 void process_compile(TRAPS) {
726 Method* method = parse_method(CHECK);
727 if (had_error()) return;
728 int entry_bci = parse_int("entry_bci");
729 const char* comp_level_label = "comp_level";
730 int comp_level = parse_int(comp_level_label);
731 // old version w/o comp_level
732 if (had_error() && (error_message() == comp_level_label)) {
733 // use highest available tier
734 comp_level = CompilationPolicy::highest_compile_level();
735 }
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 reset();
807 }
808
809 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
810 void process_ciMethod(TRAPS) {
811 Method* method = parse_method(CHECK);
812 if (had_error()) return;
813 ciMethodRecord* rec = new_ciMethod(method);
814 rec->_invocation_counter = parse_int("invocation_counter");
815 rec->_backedge_counter = parse_int("backedge_counter");
816 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
817 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
818 rec->_instructions_size = parse_int("instructions_size");
819 }
820
821 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
822 void process_ciMethodData(TRAPS) {
823 Method* method = parse_method(CHECK);
824 if (had_error()) return;
825 /* just copied from Method, to build interpret data*/
826
827 // To be properly initialized, some profiling in the MDO needs the
828 // method to be rewritten (number of arguments at a call for
829 // instance)
830 method->method_holder()->link_class(CHECK);
831 // Method::build_interpreter_method_data(method, CHECK);
832 {
833 // Grab a lock here to prevent multiple
834 // MethodData*s from being created.
835 MutexLocker ml(THREAD, MethodData_lock);
836 if (method->method_data() == NULL) {
837 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
838 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK);
839 method->set_method_data(method_data);
840 }
841 }
842
843 // collect and record all the needed information for later
844 ciMethodDataRecord* rec = new_ciMethodData(method);
845 rec->_state = parse_int("state");
846 if (_version < 1) {
847 parse_int("current_mileage");
848 } else {
849 rec->_invocation_counter = parse_int("invocation_counter");
850 }
851
852 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
853 if (rec->_orig_data == NULL) {
854 return;
855 }
856 rec->_data = parse_intptr_data("data", rec->_data_length);
857 if (rec->_data == NULL) {
858 return;
859 }
860 if (!parse_tag_and_count("oops", rec->_classes_length)) {
861 return;
862 }
863 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
864 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
865 for (int i = 0; i < rec->_classes_length; i++) {
866 int offset = parse_int("offset");
867 if (had_error()) {
868 return;
869 }
870 Klass* k = parse_klass(CHECK);
871 rec->_classes_offsets[i] = offset;
872 rec->_classes[i] = k;
873 }
874
875 if (!parse_tag_and_count("methods", rec->_methods_length)) {
876 return;
877 }
878 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
879 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
880 for (int i = 0; i < rec->_methods_length; i++) {
881 int offset = parse_int("offset");
882 if (had_error()) {
883 return;
884 }
885 Method* m = parse_method(CHECK);
886 rec->_methods_offsets[i] = offset;
887 rec->_methods[i] = m;
888 }
889 }
890
891 // instanceKlass <name>
892 // instanceKlass <constant pool ref> # <original hidden class name>
893 //
894 // Loads and initializes the klass 'name'. This can be used to
895 // create particular class loading environments
896 void process_instanceKlass(TRAPS) {
897 // just load the referenced class
898 Klass* k = parse_klass(CHECK);
899
900 if (_version >= 1) {
901 if (!_protection_domain_initialized && k != NULL) {
902 assert(_protection_domain() == NULL, "must be uninitialized");
903 // The first entry is the holder class of the method for which a replay compilation is requested.
904 // Use the same protection domain to load all subsequent classes in order to resolve all classes
905 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
906 _protection_domain = Handle(_thread, k->protection_domain());
907 }
908
909 _protection_domain_initialized = true;
910 }
911
912 if (k == NULL) {
913 return;
914 }
915 const char* comment = parse_string();
916 bool is_comment = comment != NULL && strcmp(comment, "#") == 0;
917 if (k->is_hidden() != is_comment) {
918 report_error("hidden class with comment expected");
919 return;
920 }
921 // comment, print or ignore
922 if (is_comment) {
923 if (Verbose) {
924 const char* hidden = parse_string();
925 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
926 }
927 skip_remaining();
928 }
929 }
930
931 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
932 //
933 // Load the klass 'name' and link or initialize it. Verify that the
934 // constant pool is the same length as 'length' and make sure the
935 // constant pool tags are in the same state.
936 void process_ciInstanceKlass(TRAPS) {
937 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
938 if (k == NULL) {
939 skip_remaining();
940 return;
941 }
942 int is_linked = parse_int("is_linked");
943 int is_initialized = parse_int("is_initialized");
944 int length = parse_int("length");
945 if (is_initialized) {
946 k->initialize(THREAD);
947 if (HAS_PENDING_EXCEPTION) {
948 oop throwable = PENDING_EXCEPTION;
949 java_lang_Throwable::print(throwable, tty);
950 tty->cr();
951 if (ReplayIgnoreInitErrors) {
952 CLEAR_PENDING_EXCEPTION;
953 k->set_init_state(InstanceKlass::fully_initialized);
954 } else {
955 return;
956 }
957 }
958 } else if (is_linked) {
959 k->link_class(CHECK);
960 }
961 new_ciInstanceKlass(k);
962 ConstantPool* cp = k->constants();
963 if (length != cp->length()) {
964 report_error("constant pool length mismatch: wrong class files?");
965 return;
966 }
967
968 int parsed_two_word = 0;
969 for (int i = 1; i < length; i++) {
970 int tag = parse_int("tag");
971 if (had_error()) {
972 return;
973 }
974 switch (cp->tag_at(i).value()) {
975 case JVM_CONSTANT_UnresolvedClass: {
976 if (tag == JVM_CONSTANT_Class) {
977 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
978 Klass* k = cp->klass_at(i, CHECK);
979 }
980 break;
981 }
982 case JVM_CONSTANT_Long:
983 case JVM_CONSTANT_Double:
984 parsed_two_word = i + 1;
985
986 case JVM_CONSTANT_ClassIndex:
987 case JVM_CONSTANT_StringIndex:
988 case JVM_CONSTANT_String:
989 case JVM_CONSTANT_UnresolvedClassInError:
990 case JVM_CONSTANT_Fieldref:
991 case JVM_CONSTANT_Methodref:
992 case JVM_CONSTANT_InterfaceMethodref:
993 case JVM_CONSTANT_NameAndType:
994 case JVM_CONSTANT_Utf8:
995 case JVM_CONSTANT_Integer:
996 case JVM_CONSTANT_Float:
997 case JVM_CONSTANT_MethodHandle:
998 case JVM_CONSTANT_MethodType:
999 case JVM_CONSTANT_Dynamic:
1000 case JVM_CONSTANT_InvokeDynamic:
1001 if (tag != cp->tag_at(i).value()) {
1002 report_error("tag mismatch: wrong class files?");
1003 return;
1004 }
1005 break;
1006
1007 case JVM_CONSTANT_Class:
1008 if (tag == JVM_CONSTANT_UnresolvedClass) {
1009 Klass* k = cp->klass_at(i, CHECK);
1010 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
1011 } else if (tag != JVM_CONSTANT_Class) {
1012 report_error("Unexpected tag");
1013 return;
1014 }
1015 break;
1016
1017 case 0:
1018 if (parsed_two_word == i) continue;
1019
1020 default:
1021 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1022 break;
1023 }
1024
1025 }
1026 }
1027
1028 // staticfield <klass> <name> <signature> <value>
1029 //
1030 // Initialize a class and fill in the value for a static field.
1031 // This is useful when the compile was dependent on the value of
1032 // static fields but it's impossible to properly rerun the static
1033 // initializer.
1034 void process_staticfield(TRAPS) {
1035 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1036
1037 if (k == NULL || ReplaySuppressInitializers == 0 ||
1038 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) {
1039 skip_remaining();
1040 return;
1041 }
1042
1043 assert(k->is_initialized(), "must be");
1044
1045 const char* field_name = parse_escaped_string();
1046 const char* field_signature = parse_string();
1047 fieldDescriptor fd;
1048 Symbol* name = SymbolTable::new_symbol(field_name);
1049 Symbol* sig = SymbolTable::new_symbol(field_signature);
1050 if (!k->find_local_field(name, sig, &fd) ||
1051 !fd.is_static() ||
1052 fd.has_initial_value()) {
1053 report_error(field_name);
1054 return;
1055 }
1056
1057 oop java_mirror = k->java_mirror();
1058 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1059 int length = parse_int("array length");
1060 oop value = NULL;
1061
1062 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1063 // multi dimensional array
1064 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1065 if (kelem == NULL) {
1066 return;
1067 }
1068 int rank = 0;
1069 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1070 rank++;
1071 }
1072 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1073 dims[0] = length;
1074 for (int i = 1; i < rank; i++) {
1075 dims[i] = 1; // These aren't relevant to the compiler
1076 }
1077 value = kelem->multi_allocate(rank, dims, CHECK);
1078 } else {
1079 if (strcmp(field_signature, "[B") == 0) {
1080 value = oopFactory::new_byteArray(length, CHECK);
1081 } else if (strcmp(field_signature, "[Z") == 0) {
1082 value = oopFactory::new_boolArray(length, CHECK);
1083 } else if (strcmp(field_signature, "[C") == 0) {
1084 value = oopFactory::new_charArray(length, CHECK);
1085 } else if (strcmp(field_signature, "[S") == 0) {
1086 value = oopFactory::new_shortArray(length, CHECK);
1087 } else if (strcmp(field_signature, "[F") == 0) {
1088 value = oopFactory::new_floatArray(length, CHECK);
1089 } else if (strcmp(field_signature, "[D") == 0) {
1090 value = oopFactory::new_doubleArray(length, CHECK);
1091 } else if (strcmp(field_signature, "[I") == 0) {
1092 value = oopFactory::new_intArray(length, CHECK);
1093 } else if (strcmp(field_signature, "[J") == 0) {
1094 value = oopFactory::new_longArray(length, CHECK);
1095 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1096 field_signature[1] == JVM_SIGNATURE_CLASS) {
1097 Klass* kelem = resolve_klass(field_signature + 1, CHECK);
1098 value = oopFactory::new_objArray(kelem, length, CHECK);
1099 } else {
1100 report_error("unhandled array staticfield");
1101 }
1102 }
1103 java_mirror->obj_field_put(fd.offset(), value);
1104 } else {
1105 const char* string_value = parse_escaped_string();
1106 if (strcmp(field_signature, "I") == 0) {
1107 int value = atoi(string_value);
1108 java_mirror->int_field_put(fd.offset(), value);
1109 } else if (strcmp(field_signature, "B") == 0) {
1110 int value = atoi(string_value);
1111 java_mirror->byte_field_put(fd.offset(), value);
1112 } else if (strcmp(field_signature, "C") == 0) {
1113 int value = atoi(string_value);
1114 java_mirror->char_field_put(fd.offset(), value);
1115 } else if (strcmp(field_signature, "S") == 0) {
1116 int value = atoi(string_value);
1117 java_mirror->short_field_put(fd.offset(), value);
1118 } else if (strcmp(field_signature, "Z") == 0) {
1119 int value = atoi(string_value);
1120 java_mirror->bool_field_put(fd.offset(), value);
1121 } else if (strcmp(field_signature, "J") == 0) {
1122 jlong value;
1123 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1124 fprintf(stderr, "Error parsing long: %s\n", string_value);
1125 return;
1126 }
1127 java_mirror->long_field_put(fd.offset(), value);
1128 } else if (strcmp(field_signature, "F") == 0) {
1129 float value = atof(string_value);
1130 java_mirror->float_field_put(fd.offset(), value);
1131 } else if (strcmp(field_signature, "D") == 0) {
1132 double value = atof(string_value);
1133 java_mirror->double_field_put(fd.offset(), value);
1134 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1135 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1136 java_mirror->obj_field_put(fd.offset(), value());
1137 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1138 Klass* k = resolve_klass(string_value, CHECK);
1139 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1140 java_mirror->obj_field_put(fd.offset(), value);
1141 } else {
1142 report_error("unhandled staticfield");
1143 }
1144 }
1145 }
1146
1147 #if INCLUDE_JVMTI
1148 // JvmtiExport <field> <value>
1149 void process_JvmtiExport(TRAPS) {
1150 const char* field = parse_string();
1151 bool value = parse_int("JvmtiExport flag") != 0;
1152 if (strcmp(field, "can_access_local_variables") == 0) {
1153 JvmtiExport::set_can_access_local_variables(value);
1154 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1155 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1156 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1157 JvmtiExport::set_can_post_on_exceptions(value);
1158 } else {
1159 report_error("Unrecognized JvmtiExport directive");
1160 }
1161 }
1162 #endif // INCLUDE_JVMTI
1163
1164 // Create and initialize a record for a ciMethod
1165 ciMethodRecord* new_ciMethod(Method* method) {
1166 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1167 rec->_klass_name = method->method_holder()->name()->as_utf8();
1168 rec->_method_name = method->name()->as_utf8();
1169 rec->_signature = method->signature()->as_utf8();
1170 _ci_method_records.append(rec);
1171 return rec;
1172 }
1173
1174 // Lookup data for a ciMethod
1175 ciMethodRecord* find_ciMethodRecord(Method* method) {
1176 const char* klass_name = method->method_holder()->name()->as_utf8();
1177 const char* method_name = method->name()->as_utf8();
1178 const char* signature = method->signature()->as_utf8();
1179 for (int i = 0; i < _ci_method_records.length(); i++) {
1180 ciMethodRecord* rec = _ci_method_records.at(i);
1181 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1182 strcmp(rec->_method_name, method_name) == 0 &&
1183 strcmp(rec->_signature, signature) == 0) {
1184 return rec;
1185 }
1186 }
1187 return NULL;
1188 }
1189
1190 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1191 void new_ciInstanceKlass(const InstanceKlass* klass) {
1192 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1193 rec->_klass = klass;
1194 oop java_mirror = klass->java_mirror();
1195 Handle h_java_mirror(_thread, java_mirror);
1196 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1197 _ci_instance_klass_records.append(rec);
1198 }
1199
1200 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1201 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1202 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1203 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1204 if (klass == rec->_klass) {
1205 // ciInstanceKlass for this klass was resolved.
1206 return rec;
1207 }
1208 }
1209 return NULL;
1210 }
1211
1212 // Create and initialize a record for a ciMethodData
1213 ciMethodDataRecord* new_ciMethodData(Method* method) {
1214 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1215 rec->_klass_name = method->method_holder()->name()->as_utf8();
1216 rec->_method_name = method->name()->as_utf8();
1217 rec->_signature = method->signature()->as_utf8();
1218 _ci_method_data_records.append(rec);
1219 return rec;
1220 }
1221
1222 // Lookup data for a ciMethodData
1223 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1224 const char* klass_name = method->method_holder()->name()->as_utf8();
1225 const char* method_name = method->name()->as_utf8();
1226 const char* signature = method->signature()->as_utf8();
1227 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1228 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1229 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1230 strcmp(rec->_method_name, method_name) == 0 &&
1231 strcmp(rec->_signature, signature) == 0) {
1232 return rec;
1233 }
1234 }
1235 return NULL;
1236 }
1237
1238 // Create and initialize a record for a ciInlineRecord
1239 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1240 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1241 rec->_klass_name = method->method_holder()->name()->as_utf8();
1242 rec->_method_name = method->name()->as_utf8();
1243 rec->_signature = method->signature()->as_utf8();
1244 rec->_inline_bci = bci;
1245 rec->_inline_depth = depth;
1246 rec->_inline_late = inline_late;
1247 _ci_inline_records->append(rec);
1248 return rec;
1249 }
1250
1251 // Lookup inlining data for a ciMethod
1252 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1253 if (_ci_inline_records != NULL) {
1254 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1255 }
1256 return NULL;
1257 }
1258
1259 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1260 Method* method, int bci, int depth) {
1261 if (records != NULL) {
1262 const char* klass_name = method->method_holder()->name()->as_utf8();
1263 const char* method_name = method->name()->as_utf8();
1264 const char* signature = method->signature()->as_utf8();
1265 for (int i = 0; i < records->length(); i++) {
1266 ciInlineRecord* rec = records->at(i);
1267 if ((rec->_inline_bci == bci) &&
1268 (rec->_inline_depth == depth) &&
1269 (strcmp(rec->_klass_name, klass_name) == 0) &&
1270 (strcmp(rec->_method_name, method_name) == 0) &&
1271 (strcmp(rec->_signature, signature) == 0)) {
1272 return rec;
1273 }
1274 }
1275 }
1276 return NULL;
1277 }
1278
1279 const char* error_message() {
1280 return _error_message;
1281 }
1282
1283 void reset() {
1284 _error_message = NULL;
1285 _ci_method_records.clear();
1286 _ci_method_data_records.clear();
1287 }
1288
1289 // Take an ascii string contain \u#### escapes and convert it to utf8
1290 // in place.
1291 static void unescape_string(char* value) {
1292 char* from = value;
1293 char* to = value;
1294 while (*from != '\0') {
1295 if (*from != '\\') {
1296 *from++ = *to++;
1297 } else {
1298 switch (from[1]) {
1299 case 'u': {
1300 from += 2;
1301 jchar value=0;
1302 for (int i=0; i<4; i++) {
1303 char c = *from++;
1304 switch (c) {
1305 case '0': case '1': case '2': case '3': case '4':
1306 case '5': case '6': case '7': case '8': case '9':
1307 value = (value << 4) + c - '0';
1308 break;
1309 case 'a': case 'b': case 'c':
1310 case 'd': case 'e': case 'f':
1311 value = (value << 4) + 10 + c - 'a';
1312 break;
1313 case 'A': case 'B': case 'C':
1314 case 'D': case 'E': case 'F':
1315 value = (value << 4) + 10 + c - 'A';
1316 break;
1317 default:
1318 ShouldNotReachHere();
1319 }
1320 }
1321 UNICODE::convert_to_utf8(&value, 1, to);
1322 to++;
1323 break;
1324 }
1325 case 't': *to++ = '\t'; from += 2; break;
1326 case 'n': *to++ = '\n'; from += 2; break;
1327 case 'r': *to++ = '\r'; from += 2; break;
1328 case 'f': *to++ = '\f'; from += 2; break;
1329 default:
1330 ShouldNotReachHere();
1331 }
1332 }
1333 }
1334 *from = *to;
1335 }
1336 };
1337
1338 void ciReplay::replay(TRAPS) {
1339 int exit_code = replay_impl(THREAD);
1340
1341 Threads::destroy_vm();
1342
1343 vm_exit(exit_code);
1344 }
1345
1346 bool ciReplay::no_replay_state() {
1347 return replay_state == NULL;
1348 }
1349
1350 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1351 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1352 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1353 return NULL;
1354 }
1355
1356 VM_ENTRY_MARK;
1357 // Load and parse the replay data
1358 CompileReplay rp(InlineDataFile, THREAD);
1359 if (!rp.can_replay()) {
1360 tty->print_cr("ciReplay: !rp.can_replay()");
1361 return NULL;
1362 }
1363 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1364 if (HAS_PENDING_EXCEPTION) {
1365 Handle throwable(THREAD, PENDING_EXCEPTION);
1366 CLEAR_PENDING_EXCEPTION;
1367 java_lang_Throwable::print_stack_trace(throwable, tty);
1368 tty->cr();
1369 return NULL;
1370 }
1371
1372 if (rp.had_error()) {
1373 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1374 return NULL;
1375 }
1376 return data;
1377 }
1378
1379 int ciReplay::replay_impl(TRAPS) {
1380 HandleMark hm(THREAD);
1381 ResourceMark rm(THREAD);
1382
1383 if (ReplaySuppressInitializers > 2) {
1384 // ReplaySuppressInitializers > 2 means that we want to allow
1385 // normal VM bootstrap but once we get into the replay itself
1386 // don't allow any intializers to be run.
1387 ReplaySuppressInitializers = 1;
1388 }
1389
1390 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1391 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1392 return 1;
1393 }
1394
1395 // Load and parse the replay data
1396 CompileReplay rp(ReplayDataFile, THREAD);
1397 int exit_code = 0;
1398 if (rp.can_replay()) {
1399 rp.process(THREAD);
1400 } else {
1401 exit_code = 1;
1402 return exit_code;
1403 }
1404
1405 if (HAS_PENDING_EXCEPTION) {
1406 Handle throwable(THREAD, PENDING_EXCEPTION);
1407 CLEAR_PENDING_EXCEPTION;
1408 java_lang_Throwable::print_stack_trace(throwable, tty);
1409 tty->cr();
1410 exit_code = 2;
1411 }
1412
1413 if (rp.had_error()) {
1414 tty->print_cr("Failed on %s", rp.error_message());
1415 exit_code = 1;
1416 }
1417 return exit_code;
1418 }
1419
1420 void ciReplay::initialize(ciMethodData* m) {
1421 if (no_replay_state()) {
1422 return;
1423 }
1424
1425 ASSERT_IN_VM;
1426 ResourceMark rm;
1427
1428 Method* method = m->get_MethodData()->method();
1429 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1430 if (rec == NULL) {
1431 // This indicates some mismatch with the original environment and
1432 // the replay environment though it's not always enough to
1433 // interfere with reproducing a bug
1434 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1435 method->print_name(tty);
1436 tty->cr();
1437 } else {
1438 m->_state = rec->_state;
1439 m->_invocation_counter = rec->_invocation_counter;
1440 if (rec->_data_length != 0) {
1441 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1442 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1443
1444 // Write the correct ciObjects back into the profile data
1445 ciEnv* env = ciEnv::current();
1446 for (int i = 0; i < rec->_classes_length; i++) {
1447 Klass *k = rec->_classes[i];
1448 // In case this class pointer is is tagged, preserve the tag bits
1449 intptr_t status = 0;
1450 if (k != NULL) {
1451 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1452 }
1453 rec->_data[rec->_classes_offsets[i]] = status;
1454 }
1455 for (int i = 0; i < rec->_methods_length; i++) {
1456 Method *m = rec->_methods[i];
1457 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1458 env->get_metadata(m);
1459 }
1460 // Copy the updated profile data into place as intptr_ts
1461 #ifdef _LP64
1462 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1463 #else
1464 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1465 #endif
1466 }
1467
1468 // copy in the original header
1469 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1470 }
1471 }
1472
1473
1474 bool ciReplay::should_not_inline(ciMethod* method) {
1475 if (no_replay_state()) {
1476 return false;
1477 }
1478 VM_ENTRY_MARK;
1479 // ciMethod without a record shouldn't be inlined.
1480 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1481 }
1482
1483 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1484 if (data != NULL) {
1485 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1486 VM_ENTRY_MARK;
1487 // Inline record are ordered by bci and depth.
1488 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1489 if (record == NULL) {
1490 return false;
1491 }
1492 should_delay = record->_inline_late;
1493 return true;
1494 } else if (replay_state != NULL) {
1495 VM_ENTRY_MARK;
1496 // Inline record are ordered by bci and depth.
1497 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1498 if (record == NULL) {
1499 return false;
1500 }
1501 should_delay = record->_inline_late;
1502 return true;
1503 }
1504 return false;
1505 }
1506
1507 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1508 if (data != NULL) {
1509 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1510 VM_ENTRY_MARK;
1511 // Inline record are ordered by bci and depth.
1512 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1513 } else if (replay_state != NULL) {
1514 VM_ENTRY_MARK;
1515 // Inline record are ordered by bci and depth.
1516 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1517 }
1518 return false;
1519 }
1520
1521 void ciReplay::initialize(ciMethod* m) {
1522 if (no_replay_state()) {
1523 return;
1524 }
1525
1526 ASSERT_IN_VM;
1527 ResourceMark rm;
1528
1529 Method* method = m->get_Method();
1530 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1531 if (rec == NULL) {
1532 // This indicates some mismatch with the original environment and
1533 // the replay environment though it's not always enough to
1534 // interfere with reproducing a bug
1535 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1536 method->print_name(tty);
1537 tty->cr();
1538 } else {
1539 EXCEPTION_CONTEXT;
1540 // m->_instructions_size = rec->_instructions_size;
1541 m->_instructions_size = -1;
1542 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1543 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1544 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1545 guarantee(mcs != NULL, "method counters allocation failed");
1546 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1547 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1548 }
1549 }
1550
1551 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1552 assert(!no_replay_state(), "must have replay state");
1553
1554 ASSERT_IN_VM;
1555 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1556 assert(rec != NULL, "ciInstanceKlass must be whitelisted");
1557 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1558 }
1559
1560 bool ciReplay::is_loaded(Method* method) {
1561 if (no_replay_state()) {
1562 return true;
1563 }
1564
1565 ASSERT_IN_VM;
1566 ResourceMark rm;
1567
1568 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1569 return rec != NULL;
1570 }
1571
1572 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1573 if (no_replay_state()) {
1574 return false;
1575 }
1576
1577 // Check if klass is found on whitelist.
1578 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1579 return rec == NULL;
1580 }
1581 #endif // PRODUCT
1582
1583 oop ciReplay::obj_field(oop obj, Symbol* name) {
1584 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1585
1586 do {
1587 if (!ik->has_nonstatic_fields()) {
1588 ik = ik->java_super();
1589 continue;
1590 }
1591
1592 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1593 if (fs.access_flags().is_static()) {
1594 continue;
1595 }
1596 if (fs.name() == name) {
1597 int offset = fs.offset();
1598 #ifdef ASSERT
1599 fieldDescriptor fd = fs.field_descriptor();
1600 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1601 #endif
1602 oop f = obj->obj_field(offset);
1603 return f;
1604 }
1605 }
1606
1607 ik = ik->java_super();
1608 } while (ik != NULL);
1609 return NULL;
1610 }
1611
1612 oop ciReplay::obj_field(oop obj, const char *name) {
1613 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1614 if (fname == NULL) {
1615 return NULL;
1616 }
1617 return obj_field(obj, fname);
1618 }