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 "ci/ciMethodData.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "ci/ciSymbol.hpp"
29 #include "ci/ciKlass.hpp"
30 #include "ci/ciUtilities.inline.hpp"
31 #include "classfile/javaClasses.hpp"
32 #include "classfile/symbolTable.hpp"
33 #include "classfile/systemDictionary.hpp"
34 #include "compiler/compilationPolicy.hpp"
35 #include "compiler/compileBroker.hpp"
36 #include "compiler/compilerDefinitions.inline.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "jvm.h"
39 #include "memory/allocation.inline.hpp"
40 #include "memory/oopFactory.hpp"
41 #include "memory/resourceArea.hpp"
42 #include "oops/constantPool.hpp"
43 #include "oops/cpCache.inline.hpp"
44 #include "oops/fieldStreams.inline.hpp"
45 #include "oops/inlineKlass.inline.hpp"
46 #include "oops/klass.inline.hpp"
47 #include "oops/method.inline.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "prims/jvmtiExport.hpp"
50 #include "prims/methodHandles.hpp"
51 #include "runtime/fieldDescriptor.inline.hpp"
52 #include "runtime/globals_extension.hpp"
53 #include "runtime/handles.inline.hpp"
54 #include "runtime/java.hpp"
55 #include "runtime/jniHandles.inline.hpp"
56 #include "runtime/threads.hpp"
57 #include "utilities/copy.hpp"
58 #include "utilities/macros.hpp"
59 #include "utilities/utf8.hpp"
60
61 // ciReplay
62
63 typedef struct _ciMethodDataRecord {
64 const char* _klass_name;
65 const char* _method_name;
66 const char* _signature;
67
68 int _state;
69 int _invocation_counter;
70
71 intptr_t* _data;
72 char* _orig_data;
73 Klass** _classes;
74 Method** _methods;
75 int* _classes_offsets;
76 int* _methods_offsets;
77 int _data_length;
78 int _orig_data_length;
79 int _classes_length;
80 int _methods_length;
81 } ciMethodDataRecord;
82
83 typedef struct _ciMethodRecord {
84 const char* _klass_name;
85 const char* _method_name;
86 const char* _signature;
87
88 int _instructions_size;
89 int _interpreter_invocation_count;
90 int _interpreter_throwout_count;
91 int _invocation_counter;
92 int _backedge_counter;
93 } ciMethodRecord;
94
95 typedef struct _ciInstanceKlassRecord {
96 const InstanceKlass* _klass;
97 jobject _java_mirror; // Global handle to java mirror to prevent unloading
98 } ciInstanceKlassRecord;
99
100 typedef struct _ciInlineRecord {
101 const char* _klass_name;
102 const char* _method_name;
103 const char* _signature;
104
105 int _inline_depth;
106 int _inline_bci;
107 bool _inline_late;
108 } ciInlineRecord;
109
110 class CompileReplay;
111 static CompileReplay* replay_state;
112
113 class CompileReplay : public StackObj {
114 private:
115 FILE* _stream;
116 Thread* _thread;
117 Handle _protection_domain;
118 bool _protection_domain_initialized;
119 Handle _loader;
120 int _version;
121
122 GrowableArray<ciMethodRecord*> _ci_method_records;
123 GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
124 GrowableArray<ciInstanceKlassRecord*> _ci_instance_klass_records;
125
126 // Use pointer because we may need to return inline records
127 // without destroying them.
128 GrowableArray<ciInlineRecord*>* _ci_inline_records;
129
130 const char* _error_message;
131
132 char* _bufptr;
133 char* _buffer;
134 int _buffer_length;
135
136 // "compile" data
137 ciKlass* _iklass;
138 Method* _imethod;
139 int _entry_bci;
140 int _comp_level;
141
142 public:
143 CompileReplay(const char* filename, TRAPS) {
144 _thread = THREAD;
145 _loader = Handle(_thread, SystemDictionary::java_system_loader());
146 _protection_domain = Handle();
147 _protection_domain_initialized = false;
148
149 _stream = os::fopen(filename, "rt");
150 if (_stream == NULL) {
151 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
152 }
153
154 _ci_inline_records = NULL;
155 _error_message = NULL;
156
157 _buffer_length = 32;
158 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
159 _bufptr = _buffer;
160
161 _imethod = NULL;
162 _iklass = NULL;
163 _entry_bci = 0;
164 _comp_level = 0;
165 _version = 0;
166
167 test();
168 }
169
170 ~CompileReplay() {
171 if (_stream != NULL) fclose(_stream);
172 }
173
174 void test() {
175 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
176 _bufptr = _buffer;
177 assert(parse_int("test") == 1, "what");
178 assert(parse_int("test") == 2, "what");
179 assert(strcmp(parse_string(), "foo") == 0, "what");
180 assert(parse_int("test") == 4, "what");
181 assert(strcmp(parse_string(), "bar") == 0, "what");
182 assert(parse_intptr_t("test") == 9, "what");
183 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
184 }
185
186 bool had_error() {
187 return _error_message != NULL || _thread->has_pending_exception();
188 }
189
190 bool can_replay() {
191 return !(_stream == NULL || had_error());
192 }
193
194 void report_error(const char* msg) {
195 _error_message = msg;
196 }
197
198 int parse_int(const char* label) {
199 if (had_error()) {
200 return 0;
201 }
202
203 int v = 0;
204 int read;
205 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
206 report_error(label);
207 } else {
208 _bufptr += read;
209 }
210 return v;
211 }
212
213 intptr_t parse_intptr_t(const char* label) {
214 if (had_error()) {
215 return 0;
216 }
217
218 intptr_t v = 0;
219 int read;
220 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
221 report_error(label);
222 } else {
223 _bufptr += read;
224 }
225 return v;
226 }
227
228 void skip_ws() {
229 // Skip any leading whitespace
230 while (*_bufptr == ' ' || *_bufptr == '\t') {
231 _bufptr++;
232 }
233 }
234
235 // Ignore the rest of the line
236 void skip_remaining() {
237 _bufptr = &_bufptr[strlen(_bufptr)]; // skip ahead to terminator
238 }
239
240 char* scan_and_terminate(char delim) {
241 char* str = _bufptr;
242 while (*_bufptr != delim && *_bufptr != '\0') {
243 _bufptr++;
244 }
245 if (*_bufptr != '\0') {
246 *_bufptr++ = '\0';
247 }
248 if (_bufptr == str) {
249 // nothing here
250 return NULL;
251 }
252 return str;
253 }
254
255 char* parse_string() {
256 if (had_error()) return NULL;
257
258 skip_ws();
259 return scan_and_terminate(' ');
260 }
261
262 char* parse_quoted_string() {
263 if (had_error()) return NULL;
264
265 skip_ws();
266
267 if (*_bufptr == '"') {
268 _bufptr++;
269 return scan_and_terminate('"');
270 } else {
271 return scan_and_terminate(' ');
272 }
273 }
274
275 char* parse_escaped_string() {
276 char* result = parse_quoted_string();
277 if (result != NULL) {
278 unescape_string(result);
279 }
280 return result;
281 }
282
283 // Look for the tag 'tag' followed by an
284 bool parse_tag_and_count(const char* tag, int& length) {
285 const char* t = parse_string();
286 if (t == NULL) {
287 return false;
288 }
289
290 if (strcmp(tag, t) != 0) {
291 report_error(tag);
292 return false;
293 }
294 length = parse_int("parse_tag_and_count");
295 return !had_error();
296 }
297
298 // Parse a sequence of raw data encoded as bytes and return the
299 // resulting data.
300 char* parse_data(const char* tag, int& length) {
301 int read_size = 0;
302 if (!parse_tag_and_count(tag, read_size)) {
303 return NULL;
304 }
305
306 int actual_size = sizeof(MethodData::CompilerCounters);
307 char *result = NEW_RESOURCE_ARRAY(char, actual_size);
308 int i = 0;
309 if (read_size != actual_size) {
310 tty->print_cr("Warning: ciMethodData parsing sees MethodData size %i in file, current is %i", read_size,
311 actual_size);
312 // Replay serializes the entire MethodData, but the data is at the end.
313 // If the MethodData instance size has changed, we can pad or truncate in the beginning
314 int padding = actual_size - read_size;
315 if (padding > 0) {
316 // pad missing data with zeros
317 tty->print_cr("- Padding MethodData");
318 for (; i < padding; i++) {
319 result[i] = 0;
320 }
321 } else if (padding < 0) {
322 // drop some data
323 tty->print_cr("- Truncating MethodData");
324 for (int j = 0; j < -padding; j++) {
325 int val = parse_int("data");
326 // discard val
327 }
328 }
329 }
330
331 assert(i < actual_size, "At least some data must remain to be copied");
332 for (; i < actual_size; i++) {
333 int val = parse_int("data");
334 result[i] = val;
335 }
336 length = actual_size;
337 return result;
338 }
339
340 // Parse a standard chunk of data emitted as:
341 // 'tag' <length> # # ...
342 // Where each # is an intptr_t item
343 intptr_t* parse_intptr_data(const char* tag, int& length) {
344 if (!parse_tag_and_count(tag, length)) {
345 return NULL;
346 }
347
348 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
349 for (int i = 0; i < length; i++) {
350 skip_ws();
351 intptr_t val = parse_intptr_t("data");
352 result[i] = val;
353 }
354 return result;
355 }
356
357 // Parse a possibly quoted version of a symbol into a symbolOop
358 Symbol* parse_symbol() {
359 const char* str = parse_escaped_string();
360 if (str != NULL) {
361 Symbol* sym = SymbolTable::new_symbol(str);
362 return sym;
363 }
364 return NULL;
365 }
366
367 bool parse_terminator() {
368 char* terminator = parse_string();
369 if (terminator != NULL && strcmp(terminator, ";") == 0) {
370 return true;
371 }
372 return false;
373 }
374
375 // Parse a special hidden klass location syntax
376 // syntax: @bci <klass> <name> <signature> <bci> <location>* ;
377 // syntax: @cpi <klass> <cpi> <location>* ;
378 Klass* parse_cp_ref(TRAPS) {
379 JavaThread* thread = THREAD;
380 oop obj = NULL;
381 char* ref = parse_string();
382 if (strcmp(ref, "bci") == 0) {
383 Method* m = parse_method(CHECK_NULL);
384 if (m == NULL) {
385 return NULL;
386 }
387
388 InstanceKlass* ik = m->method_holder();
389 const constantPoolHandle cp(Thread::current(), ik->constants());
390
391 // invokedynamic or invokehandle
392
393 methodHandle caller(Thread::current(), m);
394 int bci = parse_int("bci");
395 if (m->validate_bci(bci) != bci) {
396 report_error("bad bci");
397 return NULL;
398 }
399
400 ik->link_class(CHECK_NULL);
401
402 Bytecode_invoke bytecode = Bytecode_invoke_check(caller, bci);
403 if (!Bytecodes::is_defined(bytecode.code()) || !bytecode.is_valid()) {
404 report_error("no invoke found at bci");
405 return NULL;
406 }
407 bytecode.verify();
408 int index = bytecode.index();
409
410 ConstantPoolCacheEntry* cp_cache_entry = NULL;
411 CallInfo callInfo;
412 Bytecodes::Code bc = bytecode.invoke_code();
413 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
414 if (bytecode.is_invokedynamic()) {
415 cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index);
416 cp_cache_entry->set_dynamic_call(cp, callInfo);
417 } else if (bytecode.is_invokehandle()) {
418 #ifdef ASSERT
419 Klass* holder = cp->klass_ref_at(index, CHECK_NULL);
420 Symbol* name = cp->name_ref_at(index);
421 assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
422 #endif
423 cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
424 cp_cache_entry->set_method_handle(cp, callInfo);
425 } else {
426 report_error("no dynamic invoke found");
427 return NULL;
428 }
429 char* dyno_ref = parse_string();
430 if (strcmp(dyno_ref, "<appendix>") == 0) {
431 obj = cp_cache_entry->appendix_if_resolved(cp);
432 } else if (strcmp(dyno_ref, "<adapter>") == 0) {
433 if (!parse_terminator()) {
434 report_error("no dynamic invoke found");
435 return NULL;
436 }
437 Method* adapter = cp_cache_entry->f1_as_method();
438 if (adapter == NULL) {
439 report_error("no adapter found");
440 return NULL;
441 }
442 return adapter->method_holder();
443 } else if (strcmp(dyno_ref, "<bsm>") == 0) {
444 int pool_index = cp_cache_entry->constant_pool_index();
445 BootstrapInfo bootstrap_specifier(cp, pool_index, index);
446 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL);
447 } else {
448 report_error("unrecognized token");
449 return NULL;
450 }
451 } else {
452 // constant pool ref (MethodHandle)
453 if (strcmp(ref, "cpi") != 0) {
454 report_error("unexpected token");
455 return NULL;
456 }
457
458 Klass* k = parse_klass(CHECK_NULL);
459 if (k == NULL) {
460 return NULL;
461 }
462 InstanceKlass* ik = InstanceKlass::cast(k);
463 const constantPoolHandle cp(Thread::current(), ik->constants());
464
465 int cpi = parse_int("cpi");
466
467 if (cpi >= cp->length()) {
468 report_error("bad cpi");
469 return NULL;
470 }
471 if (!cp->tag_at(cpi).is_method_handle()) {
472 report_error("no method handle found at cpi");
473 return NULL;
474 }
475 ik->link_class(CHECK_NULL);
476 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL);
477 }
478 if (obj == NULL) {
479 report_error("null cp object found");
480 return NULL;
481 }
482 Klass* k = NULL;
483 skip_ws();
484 // loop: read fields
485 char* field = NULL;
486 do {
487 field = parse_string();
488 if (field == NULL) {
489 report_error("no field found");
490 return NULL;
491 }
492 if (strcmp(field, ";") == 0) {
493 break;
494 }
495 // raw Method*
496 if (strcmp(field, "<vmtarget>") == 0) {
497 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
498 k = (vmtarget == NULL) ? NULL : vmtarget->method_holder();
499 if (k == NULL) {
500 report_error("null vmtarget found");
501 return NULL;
502 }
503 if (!parse_terminator()) {
504 report_error("missing terminator");
505 return NULL;
506 }
507 return k;
508 }
509 obj = ciReplay::obj_field(obj, field);
510 // array
511 if (obj != NULL && obj->is_objArray()) {
512 objArrayOop arr = (objArrayOop)obj;
513 int index = parse_int("index");
514 if (index >= arr->length()) {
515 report_error("bad array index");
516 return NULL;
517 }
518 obj = arr->obj_at(index);
519 }
520 } while (obj != NULL);
521 if (obj == NULL) {
522 report_error("null field found");
523 return NULL;
524 }
525 k = obj->klass();
526 return k;
527 }
528
529 // Parse a valid klass name and look it up
530 // syntax: <name>
531 // syntax: <constant pool ref>
532 Klass* parse_klass(TRAPS) {
533 skip_ws();
534 // check for constant pool object reference (for a dynamic/hidden class)
535 bool cp_ref = (*_bufptr == '@');
536 if (cp_ref) {
537 ++_bufptr;
538 Klass* k = parse_cp_ref(CHECK_NULL);
539 if (k != NULL && !k->is_hidden()) {
540 report_error("expected hidden class");
541 return NULL;
542 }
543 return k;
544 }
545 char* str = parse_escaped_string();
546 Symbol* klass_name = SymbolTable::new_symbol(str);
547 if (klass_name != NULL) {
548 Klass* k = NULL;
549 if (_iklass != NULL) {
550 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
551 } else {
552 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
553 }
554 if (HAS_PENDING_EXCEPTION) {
555 oop throwable = PENDING_EXCEPTION;
556 java_lang_Throwable::print(throwable, tty);
557 tty->cr();
558 report_error(str);
559 if (ReplayIgnoreInitErrors) {
560 CLEAR_PENDING_EXCEPTION;
561 _error_message = NULL;
562 }
563 return NULL;
564 }
565 return k;
566 }
567 return NULL;
568 }
569
570 // Lookup a klass
571 Klass* resolve_klass(const char* klass, TRAPS) {
572 Symbol* klass_name = SymbolTable::new_symbol(klass);
573 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
574 }
575
576 // Parse the standard tuple of <klass> <name> <signature>
577 Method* parse_method(TRAPS) {
578 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
579 if (k == NULL) {
580 report_error("Can't find holder klass");
581 return NULL;
582 }
583 Symbol* method_name = parse_symbol();
584 Symbol* method_signature = parse_symbol();
585 Method* m = k->find_method(method_name, method_signature);
586 if (m == NULL) {
587 report_error("Can't find method");
588 }
589 return m;
590 }
591
592 int get_line(int c) {
593 int buffer_pos = 0;
594 while(c != EOF) {
595 if (buffer_pos + 1 >= _buffer_length) {
596 int new_length = _buffer_length * 2;
597 // Next call will throw error in case of OOM.
598 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
599 _buffer_length = new_length;
600 }
601 if (c == '\n') {
602 c = getc(_stream); // get next char
603 break;
604 } else if (c == '\r') {
605 // skip LF
606 } else {
607 _buffer[buffer_pos++] = c;
608 }
609 c = getc(_stream);
610 }
611 // null terminate it, reset the pointer
612 _buffer[buffer_pos] = '\0'; // NL or EOF
613 _bufptr = _buffer;
614 return c;
615 }
616
617 // Process each line of the replay file executing each command until
618 // the file ends.
619 void process(TRAPS) {
620 int line_no = 1;
621 int c = getc(_stream);
622 while(c != EOF) {
623 c = get_line(c);
624 process_command(THREAD);
625 if (had_error()) {
626 int pos = _bufptr - _buffer + 1;
627 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
628 if (ReplayIgnoreInitErrors) {
629 CLEAR_PENDING_EXCEPTION;
630 _error_message = NULL;
631 } else {
632 return;
633 }
634 }
635 line_no++;
636 }
637 reset();
638 }
639
640 void process_command(TRAPS) {
641 char* cmd = parse_string();
642 if (cmd == NULL) {
643 return;
644 }
645 if (strcmp("#", cmd) == 0) {
646 // comment line, print or ignore
647 if (Verbose) {
648 tty->print_cr("# %s", _bufptr);
649 }
650 skip_remaining();
651 } else if (strcmp("version", cmd) == 0) {
652 _version = parse_int("version");
653 if (_version < 0 || _version > REPLAY_VERSION) {
654 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
655 }
656 } else if (strcmp("compile", cmd) == 0) {
657 process_compile(CHECK);
658 } else if (strcmp("ciMethod", cmd) == 0) {
659 process_ciMethod(CHECK);
660 } else if (strcmp("ciMethodData", cmd) == 0) {
661 process_ciMethodData(CHECK);
662 } else if (strcmp("staticfield", cmd) == 0) {
663 process_staticfield(CHECK);
664 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
665 process_ciInstanceKlass(CHECK);
666 } else if (strcmp("instanceKlass", cmd) == 0) {
667 process_instanceKlass(CHECK);
668 #if INCLUDE_JVMTI
669 } else if (strcmp("JvmtiExport", cmd) == 0) {
670 process_JvmtiExport(CHECK);
671 #endif // INCLUDE_JVMTI
672 } else {
673 report_error("unknown command");
674 }
675 if (!had_error() && *_bufptr != '\0') {
676 report_error("line not properly terminated");
677 }
678 }
679
680 // validation of comp_level
681 bool is_valid_comp_level(int comp_level) {
682 const int msg_len = 256;
683 char* msg = NULL;
684 if (!is_compile(comp_level)) {
685 msg = NEW_RESOURCE_ARRAY(char, msg_len);
686 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
687 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
688 msg = NEW_RESOURCE_ARRAY(char, msg_len);
689 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
690 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
691 msg = NEW_RESOURCE_ARRAY(char, msg_len);
692 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
693 }
694 if (msg != NULL) {
695 report_error(msg);
696 return false;
697 }
698 return true;
699 }
700
701 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
702 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
703 _imethod = m;
704 _iklass = imethod->holder();
705 _entry_bci = entry_bci;
706 _comp_level = comp_level;
707 int line_no = 1;
708 int c = getc(_stream);
709 while(c != EOF) {
710 c = get_line(c);
711 // Expecting only lines with "compile" command in inline replay file.
712 char* cmd = parse_string();
713 if (cmd == NULL || strcmp("compile", cmd) != 0) {
714 return NULL;
715 }
716 process_compile(CHECK_NULL);
717 if (had_error()) {
718 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
719 tty->print_cr("%s", _buffer);
720 return NULL;
721 }
722 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
723 // Found inlining record for the requested method.
724 return _ci_inline_records;
725 }
726 line_no++;
727 }
728 return NULL;
729 }
730
731 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
732 void process_compile(TRAPS) {
733 Method* method = parse_method(CHECK);
734 if (had_error()) return;
735 int entry_bci = parse_int("entry_bci");
736 int comp_level = parse_int("comp_level");
737 if (!is_valid_comp_level(comp_level)) {
738 return;
739 }
740 if (_imethod != NULL) {
741 // Replay Inlining
742 if (entry_bci != _entry_bci || comp_level != _comp_level) {
743 return;
744 }
745 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
746 const char* imethod_name = _imethod->name()->as_utf8();
747 const char* isignature = _imethod->signature()->as_utf8();
748 const char* klass_name = method->method_holder()->name()->as_utf8();
749 const char* method_name = method->name()->as_utf8();
750 const char* signature = method->signature()->as_utf8();
751 if (strcmp(iklass_name, klass_name) != 0 ||
752 strcmp(imethod_name, method_name) != 0 ||
753 strcmp(isignature, signature) != 0) {
754 return;
755 }
756 }
757 int inline_count = 0;
758 if (parse_tag_and_count("inline", inline_count)) {
759 // Record inlining data
760 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
761 for (int i = 0; i < inline_count; i++) {
762 int depth = parse_int("inline_depth");
763 int bci = parse_int("inline_bci");
764 if (had_error()) {
765 break;
766 }
767 int inline_late = 0;
768 if (_version >= 2) {
769 inline_late = parse_int("inline_late");
770 if (had_error()) {
771 break;
772 }
773 }
774
775 Method* inl_method = parse_method(CHECK);
776 if (had_error()) {
777 break;
778 }
779 new_ciInlineRecord(inl_method, bci, depth, inline_late);
780 }
781 }
782 if (_imethod != NULL) {
783 return; // Replay Inlining
784 }
785 InstanceKlass* ik = method->method_holder();
786 ik->initialize(THREAD);
787 if (HAS_PENDING_EXCEPTION) {
788 oop throwable = PENDING_EXCEPTION;
789 java_lang_Throwable::print(throwable, tty);
790 tty->cr();
791 if (ReplayIgnoreInitErrors) {
792 CLEAR_PENDING_EXCEPTION;
793 ik->set_init_state(InstanceKlass::fully_initialized);
794 } else {
795 return;
796 }
797 }
798 // Make sure the existence of a prior compile doesn't stop this one
799 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
800 if (nm != NULL) {
801 nm->make_not_entrant();
802 }
803 replay_state = this;
804 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
805 methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
806 replay_state = NULL;
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 instance)
829 method->method_holder()->link_class(CHECK);
830 assert(method->method_data() == NULL, "Should only be initialized once");
831 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
832 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK);
833 method->set_method_data(method_data);
834
835 // collect and record all the needed information for later
836 ciMethodDataRecord* rec = new_ciMethodData(method);
837 rec->_state = parse_int("state");
838 if (_version < 1) {
839 parse_int("current_mileage");
840 } else {
841 rec->_invocation_counter = parse_int("invocation_counter");
842 }
843
844 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
845 if (rec->_orig_data == NULL) {
846 return;
847 }
848 rec->_data = parse_intptr_data("data", rec->_data_length);
849 if (rec->_data == NULL) {
850 return;
851 }
852 if (!parse_tag_and_count("oops", rec->_classes_length)) {
853 return;
854 }
855 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
856 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
857 for (int i = 0; i < rec->_classes_length; i++) {
858 int offset = parse_int("offset");
859 if (had_error()) {
860 return;
861 }
862 Klass* k = parse_klass(CHECK);
863 rec->_classes_offsets[i] = offset;
864 rec->_classes[i] = k;
865 }
866
867 if (!parse_tag_and_count("methods", rec->_methods_length)) {
868 return;
869 }
870 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
871 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
872 for (int i = 0; i < rec->_methods_length; i++) {
873 int offset = parse_int("offset");
874 if (had_error()) {
875 return;
876 }
877 Method* m = parse_method(CHECK);
878 rec->_methods_offsets[i] = offset;
879 rec->_methods[i] = m;
880 }
881 }
882
883 // instanceKlass <name>
884 // instanceKlass <constant pool ref> # <original hidden class name>
885 //
886 // Loads and initializes the klass 'name'. This can be used to
887 // create particular class loading environments
888 void process_instanceKlass(TRAPS) {
889 // just load the referenced class
890 Klass* k = parse_klass(CHECK);
891
892 if (_version >= 1) {
893 if (!_protection_domain_initialized && k != NULL) {
894 assert(_protection_domain() == NULL, "must be uninitialized");
895 // The first entry is the holder class of the method for which a replay compilation is requested.
896 // Use the same protection domain to load all subsequent classes in order to resolve all classes
897 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
898 _protection_domain = Handle(_thread, k->protection_domain());
899 }
900
901 _protection_domain_initialized = true;
902 }
903
904 if (k == NULL) {
905 return;
906 }
907 const char* comment = parse_string();
908 bool is_comment = comment != NULL && strcmp(comment, "#") == 0;
909 if (k->is_hidden() != is_comment) {
910 report_error("hidden class with comment expected");
911 return;
912 }
913 // comment, print or ignore
914 if (is_comment) {
915 if (Verbose) {
916 const char* hidden = parse_string();
917 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
918 }
919 skip_remaining();
920 }
921 }
922
923 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
924 //
925 // Load the klass 'name' and link or initialize it. Verify that the
926 // constant pool is the same length as 'length' and make sure the
927 // constant pool tags are in the same state.
928 void process_ciInstanceKlass(TRAPS) {
929 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
930 if (k == NULL) {
931 skip_remaining();
932 return;
933 }
934 int is_linked = parse_int("is_linked");
935 int is_initialized = parse_int("is_initialized");
936 int length = parse_int("length");
937 if (is_initialized) {
938 k->initialize(THREAD);
939 if (HAS_PENDING_EXCEPTION) {
940 oop throwable = PENDING_EXCEPTION;
941 java_lang_Throwable::print(throwable, tty);
942 tty->cr();
943 if (ReplayIgnoreInitErrors) {
944 CLEAR_PENDING_EXCEPTION;
945 k->set_init_state(InstanceKlass::fully_initialized);
946 } else {
947 return;
948 }
949 }
950 } else if (is_linked) {
951 k->link_class(CHECK);
952 }
953 new_ciInstanceKlass(k);
954 ConstantPool* cp = k->constants();
955 if (length != cp->length()) {
956 report_error("constant pool length mismatch: wrong class files?");
957 return;
958 }
959
960 int parsed_two_word = 0;
961 for (int i = 1; i < length; i++) {
962 int tag = parse_int("tag");
963 if (had_error()) {
964 return;
965 }
966 switch (cp->tag_at(i).value()) {
967 case JVM_CONSTANT_UnresolvedClass: {
968 if (tag == JVM_CONSTANT_Class) {
969 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
970 Klass* k = cp->klass_at(i, CHECK);
971 }
972 break;
973 }
974
975 case JVM_CONSTANT_Long:
976 case JVM_CONSTANT_Double:
977 parsed_two_word = i + 1;
978
979 case JVM_CONSTANT_ClassIndex:
980 case JVM_CONSTANT_StringIndex:
981 case JVM_CONSTANT_String:
982 case JVM_CONSTANT_UnresolvedClassInError:
983 case JVM_CONSTANT_Fieldref:
984 case JVM_CONSTANT_Methodref:
985 case JVM_CONSTANT_InterfaceMethodref:
986 case JVM_CONSTANT_NameAndType:
987 case JVM_CONSTANT_Utf8:
988 case JVM_CONSTANT_Integer:
989 case JVM_CONSTANT_Float:
990 case JVM_CONSTANT_MethodHandle:
991 case JVM_CONSTANT_MethodType:
992 case JVM_CONSTANT_Dynamic:
993 case JVM_CONSTANT_InvokeDynamic:
994 if (tag != cp->tag_at(i).value()) {
995 report_error("tag mismatch: wrong class files?");
996 return;
997 }
998 break;
999
1000 case JVM_CONSTANT_Class:
1001 if (tag == JVM_CONSTANT_UnresolvedClass) {
1002 Klass* k = cp->klass_at(i, CHECK);
1003 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
1004 } else if (tag != JVM_CONSTANT_Class) {
1005 report_error("Unexpected tag");
1006 return;
1007 }
1008 break;
1009
1010 case 0:
1011 if (parsed_two_word == i) continue;
1012
1013 default:
1014 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1015 break;
1016 }
1017
1018 }
1019 }
1020
1021 class InlineTypeFieldInitializer : public FieldClosure {
1022 oop _vt;
1023 CompileReplay* _replay;
1024 public:
1025 InlineTypeFieldInitializer(oop vt, CompileReplay* replay)
1026 : _vt(vt), _replay(replay) {}
1027
1028 void do_field(fieldDescriptor* fd) {
1029 BasicType bt = fd->field_type();
1030 const char* string_value = bt != T_PRIMITIVE_OBJECT ? _replay->parse_escaped_string() : NULL;
1031 switch (bt) {
1032 case T_BYTE: {
1033 int value = atoi(string_value);
1034 _vt->byte_field_put(fd->offset(), value);
1035 break;
1036 }
1037 case T_BOOLEAN: {
1038 int value = atoi(string_value);
1039 _vt->bool_field_put(fd->offset(), value);
1040 break;
1041 }
1042 case T_SHORT: {
1043 int value = atoi(string_value);
1044 _vt->short_field_put(fd->offset(), value);
1045 break;
1046 }
1047 case T_CHAR: {
1048 int value = atoi(string_value);
1049 _vt->char_field_put(fd->offset(), value);
1050 break;
1051 }
1052 case T_INT: {
1053 int value = atoi(string_value);
1054 _vt->int_field_put(fd->offset(), value);
1055 break;
1056 }
1057 case T_LONG: {
1058 jlong value;
1059 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1060 fprintf(stderr, "Error parsing long: %s\n", string_value);
1061 break;
1062 }
1063 _vt->long_field_put(fd->offset(), value);
1064 break;
1065 }
1066 case T_FLOAT: {
1067 float value = atof(string_value);
1068 _vt->float_field_put(fd->offset(), value);
1069 break;
1070 }
1071 case T_DOUBLE: {
1072 double value = atof(string_value);
1073 _vt->double_field_put(fd->offset(), value);
1074 break;
1075 }
1076 case T_ARRAY:
1077 case T_OBJECT: {
1078 JavaThread* THREAD = JavaThread::current();
1079 bool res = _replay->process_staticfield_reference(string_value, _vt, fd, THREAD);
1080 assert(res, "should succeed for arrays & objects");
1081 break;
1082 }
1083 case T_PRIMITIVE_OBJECT: {
1084 InlineKlass* vk = InlineKlass::cast(fd->field_holder()->get_inline_type_field_klass(fd->index()));
1085 if (fd->is_inlined()) {
1086 int field_offset = fd->offset() - vk->first_field_offset();
1087 oop obj = cast_to_oop(cast_from_oop<address>(_vt) + field_offset);
1088 InlineTypeFieldInitializer init_fields(obj, _replay);
1089 vk->do_nonstatic_fields(&init_fields);
1090 } else {
1091 oop value = vk->allocate_instance(JavaThread::current());
1092 _vt->obj_field_put(fd->offset(), value);
1093 }
1094 break;
1095 }
1096 default: {
1097 fatal("Unhandled type: %s", type2name(bt));
1098 }
1099 }
1100 }
1101 };
1102
1103 bool process_staticfield_reference(const char* field_signature, oop java_mirror, fieldDescriptor* fd, TRAPS) {
1104 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1105 int length = parse_int("array length");
1106 oop value = NULL;
1107
1108 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1109 // multi dimensional array
1110 Klass* k = resolve_klass(field_signature, CHECK_(true));
1111 ArrayKlass* kelem = (ArrayKlass *)k;
1112 int rank = 0;
1113 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1114 rank++;
1115 }
1116 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1117 dims[0] = length;
1118 for (int i = 1; i < rank; i++) {
1119 dims[i] = 1; // These aren't relevant to the compiler
1120 }
1121 value = kelem->multi_allocate(rank, dims, CHECK_(true));
1122 } else {
1123 if (strcmp(field_signature, "[B") == 0) {
1124 value = oopFactory::new_byteArray(length, CHECK_(true));
1125 } else if (strcmp(field_signature, "[Z") == 0) {
1126 value = oopFactory::new_boolArray(length, CHECK_(true));
1127 } else if (strcmp(field_signature, "[C") == 0) {
1128 value = oopFactory::new_charArray(length, CHECK_(true));
1129 } else if (strcmp(field_signature, "[S") == 0) {
1130 value = oopFactory::new_shortArray(length, CHECK_(true));
1131 } else if (strcmp(field_signature, "[F") == 0) {
1132 value = oopFactory::new_floatArray(length, CHECK_(true));
1133 } else if (strcmp(field_signature, "[D") == 0) {
1134 value = oopFactory::new_doubleArray(length, CHECK_(true));
1135 } else if (strcmp(field_signature, "[I") == 0) {
1136 value = oopFactory::new_intArray(length, CHECK_(true));
1137 } else if (strcmp(field_signature, "[J") == 0) {
1138 value = oopFactory::new_longArray(length, CHECK_(true));
1139 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1140 field_signature[1] == JVM_SIGNATURE_CLASS) {
1141 Klass* kelem = resolve_klass(field_signature + 1, CHECK_(true));
1142 value = oopFactory::new_objArray(kelem, length, CHECK_(true));
1143 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1144 field_signature[1] == JVM_SIGNATURE_PRIMITIVE_OBJECT) {
1145 Klass* kelem = resolve_klass(field_signature + 1, CHECK_(true));
1146 value = oopFactory::new_valueArray(kelem, length, CHECK_(true));
1147 } else {
1148 report_error("unhandled array staticfield");
1149 }
1150 }
1151 java_mirror->obj_field_put(fd->offset(), value);
1152 return true;
1153 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1154 const char* string_value = parse_escaped_string();
1155 Handle value = java_lang_String::create_from_str(string_value, CHECK_(true));
1156 java_mirror->obj_field_put(fd->offset(), value());
1157 return true;
1158 } else if (field_signature[0] == 'L') {
1159 const char* instance = parse_escaped_string();
1160 Klass* k = resolve_klass(instance, CHECK_(true));
1161 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK_(true));
1162 java_mirror->obj_field_put(fd->offset(), value);
1163 return true;
1164 }
1165 return false;
1166 }
1167
1168 // Initialize a class and fill in the value for a static field.
1169 // This is useful when the compile was dependent on the value of
1170 // static fields but it's impossible to properly rerun the static
1171 // initializer.
1172 void process_staticfield(TRAPS) {
1173 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1174
1175 if (k == NULL || ReplaySuppressInitializers == 0 ||
1176 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) {
1177 skip_remaining();
1178 return;
1179 }
1180
1181 assert(k->is_initialized(), "must be");
1182
1183 const char* field_name = parse_escaped_string();
1184 const char* field_signature = parse_string();
1185 fieldDescriptor fd;
1186 Symbol* name = SymbolTable::new_symbol(field_name);
1187 Symbol* sig = SymbolTable::new_symbol(field_signature);
1188 if (!k->find_local_field(name, sig, &fd) ||
1189 !fd.is_static() ||
1190 fd.has_initial_value()) {
1191 report_error(field_name);
1192 return;
1193 }
1194
1195 oop java_mirror = k->java_mirror();
1196 if (strcmp(field_signature, "I") == 0) {
1197 const char* string_value = parse_escaped_string();
1198 int value = atoi(string_value);
1199 java_mirror->int_field_put(fd.offset(), value);
1200 } else if (strcmp(field_signature, "B") == 0) {
1201 const char* string_value = parse_escaped_string();
1202 int value = atoi(string_value);
1203 java_mirror->byte_field_put(fd.offset(), value);
1204 } else if (strcmp(field_signature, "C") == 0) {
1205 const char* string_value = parse_escaped_string();
1206 int value = atoi(string_value);
1207 java_mirror->char_field_put(fd.offset(), value);
1208 } else if (strcmp(field_signature, "S") == 0) {
1209 const char* string_value = parse_escaped_string();
1210 int value = atoi(string_value);
1211 java_mirror->short_field_put(fd.offset(), value);
1212 } else if (strcmp(field_signature, "Z") == 0) {
1213 const char* string_value = parse_escaped_string();
1214 int value = atoi(string_value);
1215 java_mirror->bool_field_put(fd.offset(), value);
1216 } else if (strcmp(field_signature, "J") == 0) {
1217 const char* string_value = parse_escaped_string();
1218 jlong value;
1219 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1220 fprintf(stderr, "Error parsing long: %s\n", string_value);
1221 return;
1222 }
1223 java_mirror->long_field_put(fd.offset(), value);
1224 } else if (strcmp(field_signature, "F") == 0) {
1225 const char* string_value = parse_escaped_string();
1226 float value = atof(string_value);
1227 java_mirror->float_field_put(fd.offset(), value);
1228 } else if (strcmp(field_signature, "D") == 0) {
1229 const char* string_value = parse_escaped_string();
1230 double value = atof(string_value);
1231 java_mirror->double_field_put(fd.offset(), value);
1232 } else if (field_signature[0] == JVM_SIGNATURE_PRIMITIVE_OBJECT) {
1233 Klass* kelem = resolve_klass(field_signature, CHECK);
1234 InlineKlass* vk = InlineKlass::cast(kelem);
1235 oop value = vk->allocate_instance(CHECK);
1236 InlineTypeFieldInitializer init_fields(value, this);
1237 vk->do_nonstatic_fields(&init_fields);
1238 java_mirror->obj_field_put(fd.offset(), value);
1239 } else {
1240 bool res = process_staticfield_reference(field_signature, java_mirror, &fd, CHECK);
1241 if (!res) {
1242 report_error("unhandled staticfield");
1243 }
1244 }
1245 }
1246
1247 #if INCLUDE_JVMTI
1248 // JvmtiExport <field> <value>
1249 void process_JvmtiExport(TRAPS) {
1250 const char* field = parse_string();
1251 bool value = parse_int("JvmtiExport flag") != 0;
1252 if (strcmp(field, "can_access_local_variables") == 0) {
1253 JvmtiExport::set_can_access_local_variables(value);
1254 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1255 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1256 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1257 JvmtiExport::set_can_post_on_exceptions(value);
1258 } else {
1259 report_error("Unrecognized JvmtiExport directive");
1260 }
1261 }
1262 #endif // INCLUDE_JVMTI
1263
1264 // Create and initialize a record for a ciMethod
1265 ciMethodRecord* new_ciMethod(Method* method) {
1266 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1267 rec->_klass_name = method->method_holder()->name()->as_utf8();
1268 rec->_method_name = method->name()->as_utf8();
1269 rec->_signature = method->signature()->as_utf8();
1270 _ci_method_records.append(rec);
1271 return rec;
1272 }
1273
1274 // Lookup data for a ciMethod
1275 ciMethodRecord* find_ciMethodRecord(Method* method) {
1276 const char* klass_name = method->method_holder()->name()->as_utf8();
1277 const char* method_name = method->name()->as_utf8();
1278 const char* signature = method->signature()->as_utf8();
1279 for (int i = 0; i < _ci_method_records.length(); i++) {
1280 ciMethodRecord* rec = _ci_method_records.at(i);
1281 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1282 strcmp(rec->_method_name, method_name) == 0 &&
1283 strcmp(rec->_signature, signature) == 0) {
1284 return rec;
1285 }
1286 }
1287 return NULL;
1288 }
1289
1290 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1291 void new_ciInstanceKlass(const InstanceKlass* klass) {
1292 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1293 rec->_klass = klass;
1294 oop java_mirror = klass->java_mirror();
1295 Handle h_java_mirror(_thread, java_mirror);
1296 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1297 _ci_instance_klass_records.append(rec);
1298 }
1299
1300 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1301 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1302 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1303 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1304 if (klass == rec->_klass) {
1305 // ciInstanceKlass for this klass was resolved.
1306 return rec;
1307 }
1308 }
1309 return NULL;
1310 }
1311
1312 // Create and initialize a record for a ciMethodData
1313 ciMethodDataRecord* new_ciMethodData(Method* method) {
1314 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1315 rec->_klass_name = method->method_holder()->name()->as_utf8();
1316 rec->_method_name = method->name()->as_utf8();
1317 rec->_signature = method->signature()->as_utf8();
1318 _ci_method_data_records.append(rec);
1319 return rec;
1320 }
1321
1322 // Lookup data for a ciMethodData
1323 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1324 const char* klass_name = method->method_holder()->name()->as_utf8();
1325 const char* method_name = method->name()->as_utf8();
1326 const char* signature = method->signature()->as_utf8();
1327 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1328 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1329 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1330 strcmp(rec->_method_name, method_name) == 0 &&
1331 strcmp(rec->_signature, signature) == 0) {
1332 return rec;
1333 }
1334 }
1335 return NULL;
1336 }
1337
1338 // Create and initialize a record for a ciInlineRecord
1339 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1340 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1341 rec->_klass_name = method->method_holder()->name()->as_utf8();
1342 rec->_method_name = method->name()->as_utf8();
1343 rec->_signature = method->signature()->as_utf8();
1344 rec->_inline_bci = bci;
1345 rec->_inline_depth = depth;
1346 rec->_inline_late = inline_late;
1347 _ci_inline_records->append(rec);
1348 return rec;
1349 }
1350
1351 // Lookup inlining data for a ciMethod
1352 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1353 if (_ci_inline_records != NULL) {
1354 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1355 }
1356 return NULL;
1357 }
1358
1359 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1360 Method* method, int bci, int depth) {
1361 if (records != NULL) {
1362 const char* klass_name = method->method_holder()->name()->as_utf8();
1363 const char* method_name = method->name()->as_utf8();
1364 const char* signature = method->signature()->as_utf8();
1365 for (int i = 0; i < records->length(); i++) {
1366 ciInlineRecord* rec = records->at(i);
1367 if ((rec->_inline_bci == bci) &&
1368 (rec->_inline_depth == depth) &&
1369 (strcmp(rec->_klass_name, klass_name) == 0) &&
1370 (strcmp(rec->_method_name, method_name) == 0) &&
1371 (strcmp(rec->_signature, signature) == 0)) {
1372 return rec;
1373 }
1374 }
1375 }
1376 return NULL;
1377 }
1378
1379 const char* error_message() {
1380 return _error_message;
1381 }
1382
1383 void reset() {
1384 _error_message = NULL;
1385 _ci_method_records.clear();
1386 _ci_method_data_records.clear();
1387 }
1388
1389 // Take an ascii string contain \u#### escapes and convert it to utf8
1390 // in place.
1391 static void unescape_string(char* value) {
1392 char* from = value;
1393 char* to = value;
1394 while (*from != '\0') {
1395 if (*from != '\\') {
1396 *from++ = *to++;
1397 } else {
1398 switch (from[1]) {
1399 case 'u': {
1400 from += 2;
1401 jchar value=0;
1402 for (int i=0; i<4; i++) {
1403 char c = *from++;
1404 switch (c) {
1405 case '0': case '1': case '2': case '3': case '4':
1406 case '5': case '6': case '7': case '8': case '9':
1407 value = (value << 4) + c - '0';
1408 break;
1409 case 'a': case 'b': case 'c':
1410 case 'd': case 'e': case 'f':
1411 value = (value << 4) + 10 + c - 'a';
1412 break;
1413 case 'A': case 'B': case 'C':
1414 case 'D': case 'E': case 'F':
1415 value = (value << 4) + 10 + c - 'A';
1416 break;
1417 default:
1418 ShouldNotReachHere();
1419 }
1420 }
1421 UNICODE::convert_to_utf8(&value, 1, to);
1422 to++;
1423 break;
1424 }
1425 case 't': *to++ = '\t'; from += 2; break;
1426 case 'n': *to++ = '\n'; from += 2; break;
1427 case 'r': *to++ = '\r'; from += 2; break;
1428 case 'f': *to++ = '\f'; from += 2; break;
1429 default:
1430 ShouldNotReachHere();
1431 }
1432 }
1433 }
1434 *from = *to;
1435 }
1436 };
1437
1438 void ciReplay::replay(TRAPS) {
1439 int exit_code = replay_impl(THREAD);
1440
1441 Threads::destroy_vm();
1442
1443 vm_exit(exit_code);
1444 }
1445
1446 bool ciReplay::no_replay_state() {
1447 return replay_state == NULL;
1448 }
1449
1450 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1451 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1452 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1453 return NULL;
1454 }
1455
1456 VM_ENTRY_MARK;
1457 // Load and parse the replay data
1458 CompileReplay rp(InlineDataFile, THREAD);
1459 if (!rp.can_replay()) {
1460 tty->print_cr("ciReplay: !rp.can_replay()");
1461 return NULL;
1462 }
1463 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1464 if (HAS_PENDING_EXCEPTION) {
1465 Handle throwable(THREAD, PENDING_EXCEPTION);
1466 CLEAR_PENDING_EXCEPTION;
1467 java_lang_Throwable::print_stack_trace(throwable, tty);
1468 tty->cr();
1469 return NULL;
1470 }
1471
1472 if (rp.had_error()) {
1473 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1474 return NULL;
1475 }
1476 return data;
1477 }
1478
1479 int ciReplay::replay_impl(TRAPS) {
1480 HandleMark hm(THREAD);
1481 ResourceMark rm(THREAD);
1482
1483 if (ReplaySuppressInitializers > 2) {
1484 // ReplaySuppressInitializers > 2 means that we want to allow
1485 // normal VM bootstrap but once we get into the replay itself
1486 // don't allow any initializers to be run.
1487 ReplaySuppressInitializers = 1;
1488 }
1489
1490 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1491 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1492 return 1;
1493 }
1494
1495 // Load and parse the replay data
1496 CompileReplay rp(ReplayDataFile, THREAD);
1497 int exit_code = 0;
1498 if (rp.can_replay()) {
1499 rp.process(THREAD);
1500 } else {
1501 exit_code = 1;
1502 return exit_code;
1503 }
1504
1505 if (HAS_PENDING_EXCEPTION) {
1506 Handle throwable(THREAD, PENDING_EXCEPTION);
1507 CLEAR_PENDING_EXCEPTION;
1508 java_lang_Throwable::print_stack_trace(throwable, tty);
1509 tty->cr();
1510 exit_code = 2;
1511 }
1512
1513 if (rp.had_error()) {
1514 tty->print_cr("Failed on %s", rp.error_message());
1515 exit_code = 1;
1516 }
1517 return exit_code;
1518 }
1519
1520 void ciReplay::initialize(ciMethodData* m) {
1521 if (no_replay_state()) {
1522 return;
1523 }
1524
1525 ASSERT_IN_VM;
1526 ResourceMark rm;
1527
1528 Method* method = m->get_MethodData()->method();
1529 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1530 if (rec == NULL) {
1531 // This indicates some mismatch with the original environment and
1532 // the replay environment though it's not always enough to
1533 // interfere with reproducing a bug
1534 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1535 method->print_name(tty);
1536 tty->cr();
1537 } else {
1538 m->_state = rec->_state;
1539 m->_invocation_counter = rec->_invocation_counter;
1540 if (rec->_data_length != 0) {
1541 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1542 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1543
1544 // Write the correct ciObjects back into the profile data
1545 ciEnv* env = ciEnv::current();
1546 for (int i = 0; i < rec->_classes_length; i++) {
1547 Klass *k = rec->_classes[i];
1548 // In case this class pointer is is tagged, preserve the tag bits
1549 intptr_t status = 0;
1550 if (k != NULL) {
1551 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1552 }
1553 rec->_data[rec->_classes_offsets[i]] = status;
1554 }
1555 for (int i = 0; i < rec->_methods_length; i++) {
1556 Method *m = rec->_methods[i];
1557 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1558 env->get_metadata(m);
1559 }
1560 // Copy the updated profile data into place as intptr_ts
1561 #ifdef _LP64
1562 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1563 #else
1564 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1565 #endif
1566 }
1567
1568 // copy in the original header
1569 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1570 }
1571 }
1572
1573
1574 bool ciReplay::should_not_inline(ciMethod* method) {
1575 if (no_replay_state()) {
1576 return false;
1577 }
1578 VM_ENTRY_MARK;
1579 // ciMethod without a record shouldn't be inlined.
1580 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1581 }
1582
1583 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1584 if (data != NULL) {
1585 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1586 VM_ENTRY_MARK;
1587 // Inline record are ordered by bci and depth.
1588 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1589 if (record == NULL) {
1590 return false;
1591 }
1592 should_delay = record->_inline_late;
1593 return true;
1594 } else if (replay_state != NULL) {
1595 VM_ENTRY_MARK;
1596 // Inline record are ordered by bci and depth.
1597 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1598 if (record == NULL) {
1599 return false;
1600 }
1601 should_delay = record->_inline_late;
1602 return true;
1603 }
1604 return false;
1605 }
1606
1607 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1608 if (data != NULL) {
1609 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1610 VM_ENTRY_MARK;
1611 // Inline record are ordered by bci and depth.
1612 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1613 } else if (replay_state != NULL) {
1614 VM_ENTRY_MARK;
1615 // Inline record are ordered by bci and depth.
1616 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1617 }
1618 return false;
1619 }
1620
1621 void ciReplay::initialize(ciMethod* m) {
1622 if (no_replay_state()) {
1623 return;
1624 }
1625
1626 ASSERT_IN_VM;
1627 ResourceMark rm;
1628
1629 Method* method = m->get_Method();
1630 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1631 if (rec == NULL) {
1632 // This indicates some mismatch with the original environment and
1633 // the replay environment though it's not always enough to
1634 // interfere with reproducing a bug
1635 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1636 method->print_name(tty);
1637 tty->cr();
1638 } else {
1639 EXCEPTION_CONTEXT;
1640 // m->_instructions_size = rec->_instructions_size;
1641 m->_instructions_size = -1;
1642 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1643 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1644 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1645 guarantee(mcs != NULL, "method counters allocation failed");
1646 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1647 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1648 }
1649 }
1650
1651 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1652 assert(!no_replay_state(), "must have replay state");
1653
1654 ASSERT_IN_VM;
1655 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1656 assert(rec != NULL, "ciInstanceKlass must be whitelisted");
1657 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1658 }
1659
1660 bool ciReplay::is_loaded(Method* method) {
1661 if (no_replay_state()) {
1662 return true;
1663 }
1664
1665 ASSERT_IN_VM;
1666 ResourceMark rm;
1667
1668 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1669 return rec != NULL;
1670 }
1671
1672 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1673 if (no_replay_state()) {
1674 return false;
1675 }
1676
1677 // Check if klass is found on whitelist.
1678 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1679 return rec == NULL;
1680 }
1681
1682 oop ciReplay::obj_field(oop obj, Symbol* name) {
1683 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1684
1685 do {
1686 if (!ik->has_nonstatic_fields()) {
1687 ik = ik->java_super();
1688 continue;
1689 }
1690
1691 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1692 if (fs.access_flags().is_static()) {
1693 continue;
1694 }
1695 if (fs.name() == name) {
1696 int offset = fs.offset();
1697 #ifdef ASSERT
1698 fieldDescriptor fd = fs.field_descriptor();
1699 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1700 #endif
1701 oop f = obj->obj_field(offset);
1702 return f;
1703 }
1704 }
1705
1706 ik = ik->java_super();
1707 } while (ik != NULL);
1708 return NULL;
1709 }
1710
1711 oop ciReplay::obj_field(oop obj, const char *name) {
1712 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1713 if (fname == NULL) {
1714 return NULL;
1715 }
1716 return obj_field(obj, fname);
1717 }