1 /*
2 * Copyright (c) 2013, 2023, 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.inline.hpp"
43 #include "oops/cpCache.inline.hpp"
44 #include "oops/fieldStreams.inline.hpp"
45 #include "oops/klass.inline.hpp"
46 #include "oops/method.inline.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "oops/resolvedIndyEntry.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 == nullptr) {
151 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
152 }
153
154 _ci_inline_records = nullptr;
155 _error_message = nullptr;
156
157 _buffer_length = 32;
158 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
159 _bufptr = _buffer;
160
161 _imethod = nullptr;
162 _iklass = nullptr;
163 _entry_bci = 0;
164 _comp_level = 0;
165 _version = 0;
166
167 test();
168 }
169
170 ~CompileReplay() {
171 if (_stream != nullptr) 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 != nullptr || _thread->has_pending_exception();
188 }
189
190 bool can_replay() {
191 return !(_stream == nullptr || 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 nullptr;
251 }
252 return str;
253 }
254
255 char* parse_string() {
256 if (had_error()) return nullptr;
257
258 skip_ws();
259 return scan_and_terminate(' ');
260 }
261
262 char* parse_quoted_string() {
263 if (had_error()) return nullptr;
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 != nullptr) {
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 == nullptr) {
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 nullptr;
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 nullptr;
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 != nullptr) {
361 Symbol* sym = SymbolTable::new_symbol(str);
362 return sym;
363 }
364 return nullptr;
365 }
366
367 bool parse_terminator() {
368 char* terminator = parse_string();
369 if (terminator != nullptr && 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 = nullptr;
381 char* ref = parse_string();
382 if (strcmp(ref, "bci") == 0) {
383 Method* m = parse_method(CHECK_NULL);
384 if (m == nullptr) {
385 return nullptr;
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 nullptr;
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 nullptr;
406 }
407 bytecode.verify();
408 int index = bytecode.index();
409
410 CallInfo callInfo;
411 Bytecodes::Code bc = bytecode.invoke_code();
412 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
413
414 oop appendix = nullptr;
415 Method* adapter_method = nullptr;
416 int pool_index = 0;
417
418 if (bytecode.is_invokedynamic()) {
419 index = cp->decode_invokedynamic_index(index);
420 cp->cache()->set_dynamic_call(callInfo, index);
421
422 appendix = cp->resolved_reference_from_indy(index);
423 adapter_method = cp->resolved_indy_entry_at(index)->method();
424 pool_index = cp->resolved_indy_entry_at(index)->constant_pool_index();
425 } else if (bytecode.is_invokehandle()) {
426 #ifdef ASSERT
427 Klass* holder = cp->klass_ref_at(index, bytecode.code(), CHECK_NULL);
428 Symbol* name = cp->name_ref_at(index, bytecode.code());
429 assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
430 #endif
431 ResolvedMethodEntry* method_entry = cp->cache()->set_method_handle(index, callInfo);
432 appendix = cp->cache()->appendix_if_resolved(method_entry);
433 adapter_method = method_entry->method();
434 pool_index = method_entry->constant_pool_index();
435 } else {
436 report_error("no dynamic invoke found");
437 return nullptr;
438 }
439 char* dyno_ref = parse_string();
440 if (strcmp(dyno_ref, "<appendix>") == 0) {
441 obj = appendix;
442 } else if (strcmp(dyno_ref, "<adapter>") == 0) {
443 if (!parse_terminator()) {
444 report_error("no dynamic invoke found");
445 return nullptr;
446 }
447 Method* adapter = adapter_method;
448 if (adapter == nullptr) {
449 report_error("no adapter found");
450 return nullptr;
451 }
452 return adapter->method_holder();
453 } else if (strcmp(dyno_ref, "<bsm>") == 0) {
454 BootstrapInfo bootstrap_specifier(cp, pool_index, index);
455 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL);
456 } else {
457 report_error("unrecognized token");
458 return nullptr;
459 }
460 } else {
461 // constant pool ref (MethodHandle)
462 if (strcmp(ref, "cpi") != 0) {
463 report_error("unexpected token");
464 return nullptr;
465 }
466
467 Klass* k = parse_klass(CHECK_NULL);
468 if (k == nullptr) {
469 return nullptr;
470 }
471 InstanceKlass* ik = InstanceKlass::cast(k);
472 const constantPoolHandle cp(Thread::current(), ik->constants());
473
474 int cpi = parse_int("cpi");
475
476 if (cpi >= cp->length()) {
477 report_error("bad cpi");
478 return nullptr;
479 }
480 if (!cp->tag_at(cpi).is_method_handle()) {
481 report_error("no method handle found at cpi");
482 return nullptr;
483 }
484 ik->link_class(CHECK_NULL);
485 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL);
486 }
487 if (obj == nullptr) {
488 report_error("null cp object found");
489 return nullptr;
490 }
491 Klass* k = nullptr;
492 skip_ws();
493 // loop: read fields
494 char* field = nullptr;
495 do {
496 field = parse_string();
497 if (field == nullptr) {
498 report_error("no field found");
499 return nullptr;
500 }
501 if (strcmp(field, ";") == 0) {
502 break;
503 }
504 // raw Method*
505 if (strcmp(field, "<vmtarget>") == 0) {
506 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
507 k = (vmtarget == nullptr) ? nullptr : vmtarget->method_holder();
508 if (k == nullptr) {
509 report_error("null vmtarget found");
510 return nullptr;
511 }
512 if (!parse_terminator()) {
513 report_error("missing terminator");
514 return nullptr;
515 }
516 return k;
517 }
518 obj = ciReplay::obj_field(obj, field);
519 // array
520 if (obj != nullptr && obj->is_objArray()) {
521 objArrayOop arr = (objArrayOop)obj;
522 int index = parse_int("index");
523 if (index >= arr->length()) {
524 report_error("bad array index");
525 return nullptr;
526 }
527 obj = arr->obj_at(index);
528 }
529 } while (obj != nullptr);
530 if (obj == nullptr) {
531 report_error("null field found");
532 return nullptr;
533 }
534 k = obj->klass();
535 return k;
536 }
537
538 // Parse a valid klass name and look it up
539 // syntax: <name>
540 // syntax: <constant pool ref>
541 Klass* parse_klass(TRAPS) {
542 skip_ws();
543 // check for constant pool object reference (for a dynamic/hidden class)
544 bool cp_ref = (*_bufptr == '@');
545 if (cp_ref) {
546 ++_bufptr;
547 Klass* k = parse_cp_ref(CHECK_NULL);
548 if (k != nullptr && !k->is_hidden()) {
549 report_error("expected hidden class");
550 return nullptr;
551 }
552 return k;
553 }
554 char* str = parse_escaped_string();
555 Symbol* klass_name = SymbolTable::new_symbol(str);
556 if (klass_name != nullptr) {
557 Klass* k = nullptr;
558 if (_iklass != nullptr) {
559 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
560 } else {
561 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
562 }
563 if (HAS_PENDING_EXCEPTION) {
564 oop throwable = PENDING_EXCEPTION;
565 java_lang_Throwable::print(throwable, tty);
566 tty->cr();
567 report_error(str);
568 if (ReplayIgnoreInitErrors) {
569 CLEAR_PENDING_EXCEPTION;
570 _error_message = nullptr;
571 }
572 return nullptr;
573 }
574 return k;
575 }
576 return nullptr;
577 }
578
579 // Lookup a klass
580 Klass* resolve_klass(const char* klass, TRAPS) {
581 Symbol* klass_name = SymbolTable::new_symbol(klass);
582 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
583 }
584
585 // Parse the standard tuple of <klass> <name> <signature>
586 Method* parse_method(TRAPS) {
587 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
588 if (k == nullptr) {
589 report_error("Can't find holder klass");
590 return nullptr;
591 }
592 Symbol* method_name = parse_symbol();
593 Symbol* method_signature = parse_symbol();
594 Method* m = k->find_method(method_name, method_signature);
595 if (m == nullptr) {
596 report_error("Can't find method");
597 }
598 return m;
599 }
600
601 int get_line(int c) {
602 int buffer_pos = 0;
603 while(c != EOF) {
604 if (buffer_pos + 1 >= _buffer_length) {
605 int new_length = _buffer_length * 2;
606 // Next call will throw error in case of OOM.
607 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
608 _buffer_length = new_length;
609 }
610 if (c == '\n') {
611 c = getc(_stream); // get next char
612 break;
613 } else if (c == '\r') {
614 // skip LF
615 } else {
616 _buffer[buffer_pos++] = c;
617 }
618 c = getc(_stream);
619 }
620 // null terminate it, reset the pointer
621 _buffer[buffer_pos] = '\0'; // NL or EOF
622 _bufptr = _buffer;
623 return c;
624 }
625
626 // Process each line of the replay file executing each command until
627 // the file ends.
628 void process(TRAPS) {
629 int line_no = 1;
630 int c = getc(_stream);
631 while(c != EOF) {
632 c = get_line(c);
633 process_command(false, THREAD);
634 if (had_error()) {
635 int pos = _bufptr - _buffer + 1;
636 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
637 if (ReplayIgnoreInitErrors) {
638 CLEAR_PENDING_EXCEPTION;
639 _error_message = nullptr;
640 } else {
641 return;
642 }
643 }
644 line_no++;
645 }
646 reset();
647 }
648
649 void process_command(bool is_replay_inline, TRAPS) {
650 char* cmd = parse_string();
651 if (cmd == nullptr) {
652 return;
653 }
654 if (strcmp("#", cmd) == 0) {
655 // comment line, print or ignore
656 if (Verbose) {
657 tty->print_cr("# %s", _bufptr);
658 }
659 skip_remaining();
660 } else if (strcmp("version", cmd) == 0) {
661 _version = parse_int("version");
662 if (_version < 0 || _version > REPLAY_VERSION) {
663 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
664 }
665 } else if (strcmp("compile", cmd) == 0) {
666 process_compile(CHECK);
667 } else if (!is_replay_inline) {
668 if (strcmp("ciMethod", cmd) == 0) {
669 process_ciMethod(CHECK);
670 } else if (strcmp("ciMethodData", cmd) == 0) {
671 process_ciMethodData(CHECK);
672 } else if (strcmp("staticfield", cmd) == 0) {
673 process_staticfield(CHECK);
674 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
675 process_ciInstanceKlass(CHECK);
676 } else if (strcmp("instanceKlass", cmd) == 0) {
677 process_instanceKlass(CHECK);
678 #if INCLUDE_JVMTI
679 } else if (strcmp("JvmtiExport", cmd) == 0) {
680 process_JvmtiExport(CHECK);
681 #endif // INCLUDE_JVMTI
682 } else {
683 report_error("unknown command");
684 }
685 } else {
686 report_error("unknown command");
687 }
688 if (!had_error() && *_bufptr != '\0') {
689 report_error("line not properly terminated");
690 }
691 }
692
693 // validation of comp_level
694 bool is_valid_comp_level(int comp_level) {
695 const int msg_len = 256;
696 char* msg = nullptr;
697 if (!is_compile(comp_level)) {
698 msg = NEW_RESOURCE_ARRAY(char, msg_len);
699 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
700 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
701 msg = NEW_RESOURCE_ARRAY(char, msg_len);
702 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
703 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
704 msg = NEW_RESOURCE_ARRAY(char, msg_len);
705 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
706 }
707 if (msg != nullptr) {
708 report_error(msg);
709 return false;
710 }
711 return true;
712 }
713
714 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
715 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
716 _imethod = m;
717 _iklass = imethod->holder();
718 _entry_bci = entry_bci;
719 _comp_level = comp_level;
720 int line_no = 1;
721 int c = getc(_stream);
722 while(c != EOF) {
723 c = get_line(c);
724 process_command(true, CHECK_NULL);
725 if (had_error()) {
726 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
727 tty->print_cr("%s", _buffer);
728 return nullptr;
729 }
730 if (_ci_inline_records != nullptr && _ci_inline_records->length() > 0) {
731 // Found inlining record for the requested method.
732 return _ci_inline_records;
733 }
734 line_no++;
735 }
736 return nullptr;
737 }
738
739 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
740 void process_compile(TRAPS) {
741 Method* method = parse_method(CHECK);
742 if (had_error()) return;
743 int entry_bci = parse_int("entry_bci");
744 int comp_level = parse_int("comp_level");
745 if (!is_valid_comp_level(comp_level)) {
746 return;
747 }
748 if (_imethod != nullptr) {
749 // Replay Inlining
750 if (entry_bci != _entry_bci || comp_level != _comp_level) {
751 return;
752 }
753 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
754 const char* imethod_name = _imethod->name()->as_utf8();
755 const char* isignature = _imethod->signature()->as_utf8();
756 const char* klass_name = method->method_holder()->name()->as_utf8();
757 const char* method_name = method->name()->as_utf8();
758 const char* signature = method->signature()->as_utf8();
759 if (strcmp(iklass_name, klass_name) != 0 ||
760 strcmp(imethod_name, method_name) != 0 ||
761 strcmp(isignature, signature) != 0) {
762 return;
763 }
764 }
765 int inline_count = 0;
766 if (parse_tag_and_count("inline", inline_count)) {
767 // Record inlining data
768 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
769 for (int i = 0; i < inline_count; i++) {
770 int depth = parse_int("inline_depth");
771 int bci = parse_int("inline_bci");
772 if (had_error()) {
773 break;
774 }
775 int inline_late = 0;
776 if (_version >= 2) {
777 inline_late = parse_int("inline_late");
778 if (had_error()) {
779 break;
780 }
781 }
782
783 Method* inl_method = parse_method(CHECK);
784 if (had_error()) {
785 break;
786 }
787 new_ciInlineRecord(inl_method, bci, depth, inline_late);
788 }
789 }
790 if (_imethod != nullptr) {
791 return; // Replay Inlining
792 }
793 InstanceKlass* ik = method->method_holder();
794 ik->initialize(THREAD);
795 if (HAS_PENDING_EXCEPTION) {
796 oop throwable = PENDING_EXCEPTION;
797 java_lang_Throwable::print(throwable, tty);
798 tty->cr();
799 if (ReplayIgnoreInitErrors) {
800 CLEAR_PENDING_EXCEPTION;
801 ik->set_init_state(InstanceKlass::fully_initialized);
802 } else {
803 return;
804 }
805 }
806 // Make sure the existence of a prior compile doesn't stop this one
807 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
808 if (nm != nullptr) {
809 nm->make_not_entrant();
810 }
811 replay_state = this;
812 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
813 methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
814 replay_state = nullptr;
815 }
816
817 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
818 void process_ciMethod(TRAPS) {
819 Method* method = parse_method(CHECK);
820 if (had_error()) return;
821 ciMethodRecord* rec = new_ciMethod(method);
822 rec->_invocation_counter = parse_int("invocation_counter");
823 rec->_backedge_counter = parse_int("backedge_counter");
824 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
825 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
826 rec->_instructions_size = parse_int("instructions_size");
827 }
828
829 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
830 void process_ciMethodData(TRAPS) {
831 Method* method = parse_method(CHECK);
832 if (had_error()) return;
833 /* just copied from Method, to build interpret data*/
834
835 // To be properly initialized, some profiling in the MDO needs the
836 // method to be rewritten (number of arguments at a call for instance)
837 method->method_holder()->link_class(CHECK);
838 assert(method->method_data() == nullptr, "Should only be initialized once");
839 method->build_profiling_method_data(methodHandle(THREAD, method), CHECK);
840
841 // collect and record all the needed information for later
842 ciMethodDataRecord* rec = new_ciMethodData(method);
843 rec->_state = parse_int("state");
844 if (_version < 1) {
845 parse_int("current_mileage");
846 } else {
847 rec->_invocation_counter = parse_int("invocation_counter");
848 }
849
850 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
851 if (rec->_orig_data == nullptr) {
852 return;
853 }
854 rec->_data = parse_intptr_data("data", rec->_data_length);
855 if (rec->_data == nullptr) {
856 return;
857 }
858 if (!parse_tag_and_count("oops", rec->_classes_length)) {
859 return;
860 }
861 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
862 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
863 for (int i = 0; i < rec->_classes_length; i++) {
864 int offset = parse_int("offset");
865 if (had_error()) {
866 return;
867 }
868 Klass* k = parse_klass(CHECK);
869 rec->_classes_offsets[i] = offset;
870 rec->_classes[i] = k;
871 }
872
873 if (!parse_tag_and_count("methods", rec->_methods_length)) {
874 return;
875 }
876 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
877 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
878 for (int i = 0; i < rec->_methods_length; i++) {
879 int offset = parse_int("offset");
880 if (had_error()) {
881 return;
882 }
883 Method* m = parse_method(CHECK);
884 rec->_methods_offsets[i] = offset;
885 rec->_methods[i] = m;
886 }
887 }
888
889 // instanceKlass <name>
890 // instanceKlass <constant pool ref> # <original hidden class name>
891 //
892 // Loads and initializes the klass 'name'. This can be used to
893 // create particular class loading environments
894 void process_instanceKlass(TRAPS) {
895 // just load the referenced class
896 Klass* k = parse_klass(CHECK);
897
898 if (_version >= 1) {
899 if (!_protection_domain_initialized && k != nullptr) {
900 assert(_protection_domain() == nullptr, "must be uninitialized");
901 // The first entry is the holder class of the method for which a replay compilation is requested.
902 // Use the same protection domain to load all subsequent classes in order to resolve all classes
903 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
904 _protection_domain = Handle(_thread, k->protection_domain());
905 }
906
907 _protection_domain_initialized = true;
908 }
909
910 if (k == nullptr) {
911 return;
912 }
913 const char* comment = parse_string();
914 bool is_comment = comment != nullptr && strcmp(comment, "#") == 0;
915 if (k->is_hidden() != is_comment) {
916 report_error("hidden class with comment expected");
917 return;
918 }
919 // comment, print or ignore
920 if (is_comment) {
921 if (Verbose) {
922 const char* hidden = parse_string();
923 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
924 }
925 skip_remaining();
926 }
927 }
928
929 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
930 //
931 // Load the klass 'name' and link or initialize it. Verify that the
932 // constant pool is the same length as 'length' and make sure the
933 // constant pool tags are in the same state.
934 void process_ciInstanceKlass(TRAPS) {
935 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
936 if (k == nullptr) {
937 skip_remaining();
938 return;
939 }
940 int is_linked = parse_int("is_linked");
941 int is_initialized = parse_int("is_initialized");
942 int length = parse_int("length");
943 if (is_initialized) {
944 k->initialize(THREAD);
945 if (HAS_PENDING_EXCEPTION) {
946 oop throwable = PENDING_EXCEPTION;
947 java_lang_Throwable::print(throwable, tty);
948 tty->cr();
949 if (ReplayIgnoreInitErrors) {
950 CLEAR_PENDING_EXCEPTION;
951 k->set_init_state(InstanceKlass::fully_initialized);
952 } else {
953 return;
954 }
955 }
956 } else if (is_linked) {
957 k->link_class(CHECK);
958 }
959 new_ciInstanceKlass(k);
960 ConstantPool* cp = k->constants();
961 if (length != cp->length()) {
962 report_error("constant pool length mismatch: wrong class files?");
963 return;
964 }
965
966 int parsed_two_word = 0;
967 for (int i = 1; i < length; i++) {
968 int tag = parse_int("tag");
969 if (had_error()) {
970 return;
971 }
972 switch (cp->tag_at(i).value()) {
973 case JVM_CONSTANT_UnresolvedClass: {
974 if (tag == JVM_CONSTANT_Class) {
975 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
976 Klass* k = cp->klass_at(i, CHECK);
977 }
978 break;
979 }
980 case JVM_CONSTANT_Long:
981 case JVM_CONSTANT_Double:
982 parsed_two_word = i + 1;
983
984 case JVM_CONSTANT_ClassIndex:
985 case JVM_CONSTANT_StringIndex:
986 case JVM_CONSTANT_String:
987 case JVM_CONSTANT_UnresolvedClassInError:
988 case JVM_CONSTANT_Fieldref:
989 case JVM_CONSTANT_Methodref:
990 case JVM_CONSTANT_InterfaceMethodref:
991 case JVM_CONSTANT_NameAndType:
992 case JVM_CONSTANT_Utf8:
993 case JVM_CONSTANT_Integer:
994 case JVM_CONSTANT_Float:
995 case JVM_CONSTANT_MethodHandle:
996 case JVM_CONSTANT_MethodType:
997 case JVM_CONSTANT_Dynamic:
998 case JVM_CONSTANT_InvokeDynamic:
999 if (tag != cp->tag_at(i).value()) {
1000 report_error("tag mismatch: wrong class files?");
1001 return;
1002 }
1003 break;
1004
1005 case JVM_CONSTANT_Class:
1006 if (tag == JVM_CONSTANT_UnresolvedClass) {
1007 Klass* k = cp->klass_at(i, CHECK);
1008 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
1009 } else if (tag != JVM_CONSTANT_Class) {
1010 report_error("Unexpected tag");
1011 return;
1012 }
1013 break;
1014
1015 case 0:
1016 if (parsed_two_word == i) continue;
1017
1018 default:
1019 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1020 break;
1021 }
1022
1023 }
1024 }
1025
1026 // staticfield <klass> <name> <signature> <value>
1027 //
1028 // Initialize a class and fill in the value for a static field.
1029 // This is useful when the compile was dependent on the value of
1030 // static fields but it's impossible to properly rerun the static
1031 // initializer.
1032 void process_staticfield(TRAPS) {
1033 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1034
1035 if (k == nullptr || ReplaySuppressInitializers == 0 ||
1036 (ReplaySuppressInitializers == 2 && k->class_loader() == nullptr)) {
1037 skip_remaining();
1038 return;
1039 }
1040
1041 assert(k->is_initialized(), "must be");
1042
1043 const char* field_name = parse_escaped_string();
1044 const char* field_signature = parse_string();
1045 fieldDescriptor fd;
1046 Symbol* name = SymbolTable::new_symbol(field_name);
1047 Symbol* sig = SymbolTable::new_symbol(field_signature);
1048 if (!k->find_local_field(name, sig, &fd) ||
1049 !fd.is_static() ||
1050 fd.has_initial_value()) {
1051 report_error(field_name);
1052 return;
1053 }
1054
1055 oop java_mirror = k->java_mirror();
1056 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1057 int length = parse_int("array length");
1058 oop value = nullptr;
1059
1060 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1061 // multi dimensional array
1062 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1063 if (kelem == nullptr) {
1064 return;
1065 }
1066 int rank = 0;
1067 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1068 rank++;
1069 }
1070 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1071 dims[0] = length;
1072 for (int i = 1; i < rank; i++) {
1073 dims[i] = 1; // These aren't relevant to the compiler
1074 }
1075 value = kelem->multi_allocate(rank, dims, CHECK);
1076 } else {
1077 if (strcmp(field_signature, "[B") == 0) {
1078 value = oopFactory::new_byteArray(length, CHECK);
1079 } else if (strcmp(field_signature, "[Z") == 0) {
1080 value = oopFactory::new_boolArray(length, CHECK);
1081 } else if (strcmp(field_signature, "[C") == 0) {
1082 value = oopFactory::new_charArray(length, CHECK);
1083 } else if (strcmp(field_signature, "[S") == 0) {
1084 value = oopFactory::new_shortArray(length, CHECK);
1085 } else if (strcmp(field_signature, "[F") == 0) {
1086 value = oopFactory::new_floatArray(length, CHECK);
1087 } else if (strcmp(field_signature, "[D") == 0) {
1088 value = oopFactory::new_doubleArray(length, CHECK);
1089 } else if (strcmp(field_signature, "[I") == 0) {
1090 value = oopFactory::new_intArray(length, CHECK);
1091 } else if (strcmp(field_signature, "[J") == 0) {
1092 value = oopFactory::new_longArray(length, CHECK);
1093 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1094 field_signature[1] == JVM_SIGNATURE_CLASS) {
1095 parse_klass(CHECK); // eat up the array class name
1096 Klass* kelem = resolve_klass(field_signature + 1, CHECK);
1097 value = oopFactory::new_objArray(kelem, length, CHECK);
1098 } else {
1099 report_error("unhandled array staticfield");
1100 }
1101 }
1102 java_mirror->obj_field_put(fd.offset(), value);
1103 } else {
1104 const char* string_value = parse_escaped_string();
1105 if (strcmp(field_signature, "I") == 0) {
1106 int value = atoi(string_value);
1107 java_mirror->int_field_put(fd.offset(), value);
1108 } else if (strcmp(field_signature, "B") == 0) {
1109 int value = atoi(string_value);
1110 java_mirror->byte_field_put(fd.offset(), value);
1111 } else if (strcmp(field_signature, "C") == 0) {
1112 int value = atoi(string_value);
1113 java_mirror->char_field_put(fd.offset(), value);
1114 } else if (strcmp(field_signature, "S") == 0) {
1115 int value = atoi(string_value);
1116 java_mirror->short_field_put(fd.offset(), value);
1117 } else if (strcmp(field_signature, "Z") == 0) {
1118 int value = atoi(string_value);
1119 java_mirror->bool_field_put(fd.offset(), value);
1120 } else if (strcmp(field_signature, "J") == 0) {
1121 jlong value;
1122 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1123 fprintf(stderr, "Error parsing long: %s\n", string_value);
1124 return;
1125 }
1126 java_mirror->long_field_put(fd.offset(), value);
1127 } else if (strcmp(field_signature, "F") == 0) {
1128 float value = atof(string_value);
1129 java_mirror->float_field_put(fd.offset(), value);
1130 } else if (strcmp(field_signature, "D") == 0) {
1131 double value = atof(string_value);
1132 java_mirror->double_field_put(fd.offset(), value);
1133 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1134 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1135 java_mirror->obj_field_put(fd.offset(), value());
1136 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1137 Klass* k = resolve_klass(string_value, CHECK);
1138 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1139 java_mirror->obj_field_put(fd.offset(), value);
1140 } else {
1141 report_error("unhandled staticfield");
1142 }
1143 }
1144 }
1145
1146 #if INCLUDE_JVMTI
1147 // JvmtiExport <field> <value>
1148 void process_JvmtiExport(TRAPS) {
1149 const char* field = parse_string();
1150 bool value = parse_int("JvmtiExport flag") != 0;
1151 if (strcmp(field, "can_access_local_variables") == 0) {
1152 JvmtiExport::set_can_access_local_variables(value);
1153 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1154 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1155 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1156 JvmtiExport::set_can_post_on_exceptions(value);
1157 } else {
1158 report_error("Unrecognized JvmtiExport directive");
1159 }
1160 }
1161 #endif // INCLUDE_JVMTI
1162
1163 // Create and initialize a record for a ciMethod
1164 ciMethodRecord* new_ciMethod(Method* method) {
1165 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1166 rec->_klass_name = method->method_holder()->name()->as_utf8();
1167 rec->_method_name = method->name()->as_utf8();
1168 rec->_signature = method->signature()->as_utf8();
1169 _ci_method_records.append(rec);
1170 return rec;
1171 }
1172
1173 // Lookup data for a ciMethod
1174 ciMethodRecord* find_ciMethodRecord(Method* method) {
1175 const char* klass_name = method->method_holder()->name()->as_utf8();
1176 const char* method_name = method->name()->as_utf8();
1177 const char* signature = method->signature()->as_utf8();
1178 for (int i = 0; i < _ci_method_records.length(); i++) {
1179 ciMethodRecord* rec = _ci_method_records.at(i);
1180 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1181 strcmp(rec->_method_name, method_name) == 0 &&
1182 strcmp(rec->_signature, signature) == 0) {
1183 return rec;
1184 }
1185 }
1186 return nullptr;
1187 }
1188
1189 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1190 void new_ciInstanceKlass(const InstanceKlass* klass) {
1191 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1192 rec->_klass = klass;
1193 oop java_mirror = klass->java_mirror();
1194 Handle h_java_mirror(_thread, java_mirror);
1195 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1196 _ci_instance_klass_records.append(rec);
1197 }
1198
1199 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1200 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1201 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1202 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1203 if (klass == rec->_klass) {
1204 // ciInstanceKlass for this klass was resolved.
1205 return rec;
1206 }
1207 }
1208 return nullptr;
1209 }
1210
1211 // Create and initialize a record for a ciMethodData
1212 ciMethodDataRecord* new_ciMethodData(Method* method) {
1213 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1214 rec->_klass_name = method->method_holder()->name()->as_utf8();
1215 rec->_method_name = method->name()->as_utf8();
1216 rec->_signature = method->signature()->as_utf8();
1217 _ci_method_data_records.append(rec);
1218 return rec;
1219 }
1220
1221 // Lookup data for a ciMethodData
1222 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1223 const char* klass_name = method->method_holder()->name()->as_utf8();
1224 const char* method_name = method->name()->as_utf8();
1225 const char* signature = method->signature()->as_utf8();
1226 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1227 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1228 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1229 strcmp(rec->_method_name, method_name) == 0 &&
1230 strcmp(rec->_signature, signature) == 0) {
1231 return rec;
1232 }
1233 }
1234 return nullptr;
1235 }
1236
1237 // Create and initialize a record for a ciInlineRecord
1238 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1239 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1240 rec->_klass_name = method->method_holder()->name()->as_utf8();
1241 rec->_method_name = method->name()->as_utf8();
1242 rec->_signature = method->signature()->as_utf8();
1243 rec->_inline_bci = bci;
1244 rec->_inline_depth = depth;
1245 rec->_inline_late = inline_late;
1246 _ci_inline_records->append(rec);
1247 return rec;
1248 }
1249
1250 // Lookup inlining data for a ciMethod
1251 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1252 if (_ci_inline_records != nullptr) {
1253 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1254 }
1255 return nullptr;
1256 }
1257
1258 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1259 Method* method, int bci, int depth) {
1260 if (records != nullptr) {
1261 const char* klass_name = method->method_holder()->name()->as_utf8();
1262 const char* method_name = method->name()->as_utf8();
1263 const char* signature = method->signature()->as_utf8();
1264 for (int i = 0; i < records->length(); i++) {
1265 ciInlineRecord* rec = records->at(i);
1266 if ((rec->_inline_bci == bci) &&
1267 (rec->_inline_depth == depth) &&
1268 (strcmp(rec->_klass_name, klass_name) == 0) &&
1269 (strcmp(rec->_method_name, method_name) == 0) &&
1270 (strcmp(rec->_signature, signature) == 0)) {
1271 return rec;
1272 }
1273 }
1274 }
1275 return nullptr;
1276 }
1277
1278 const char* error_message() {
1279 return _error_message;
1280 }
1281
1282 void reset() {
1283 _error_message = nullptr;
1284 _ci_method_records.clear();
1285 _ci_method_data_records.clear();
1286 }
1287
1288 // Take an ascii string contain \u#### escapes and convert it to utf8
1289 // in place.
1290 static void unescape_string(char* value) {
1291 char* from = value;
1292 char* to = value;
1293 while (*from != '\0') {
1294 if (*from != '\\') {
1295 *from++ = *to++;
1296 } else {
1297 switch (from[1]) {
1298 case 'u': {
1299 from += 2;
1300 jchar value=0;
1301 for (int i=0; i<4; i++) {
1302 char c = *from++;
1303 switch (c) {
1304 case '0': case '1': case '2': case '3': case '4':
1305 case '5': case '6': case '7': case '8': case '9':
1306 value = (value << 4) + c - '0';
1307 break;
1308 case 'a': case 'b': case 'c':
1309 case 'd': case 'e': case 'f':
1310 value = (value << 4) + 10 + c - 'a';
1311 break;
1312 case 'A': case 'B': case 'C':
1313 case 'D': case 'E': case 'F':
1314 value = (value << 4) + 10 + c - 'A';
1315 break;
1316 default:
1317 ShouldNotReachHere();
1318 }
1319 }
1320 UNICODE::convert_to_utf8(&value, 1, to);
1321 to++;
1322 break;
1323 }
1324 case 't': *to++ = '\t'; from += 2; break;
1325 case 'n': *to++ = '\n'; from += 2; break;
1326 case 'r': *to++ = '\r'; from += 2; break;
1327 case 'f': *to++ = '\f'; from += 2; break;
1328 default:
1329 ShouldNotReachHere();
1330 }
1331 }
1332 }
1333 *from = *to;
1334 }
1335 };
1336
1337 void ciReplay::replay(TRAPS) {
1338 int exit_code = replay_impl(THREAD);
1339
1340 Threads::destroy_vm();
1341
1342 vm_exit(exit_code);
1343 }
1344
1345 bool ciReplay::no_replay_state() {
1346 return replay_state == nullptr;
1347 }
1348
1349 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1350 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1351 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1352 return nullptr;
1353 }
1354
1355 VM_ENTRY_MARK;
1356 // Load and parse the replay data
1357 CompileReplay rp(InlineDataFile, THREAD);
1358 if (!rp.can_replay()) {
1359 tty->print_cr("ciReplay: !rp.can_replay()");
1360 return nullptr;
1361 }
1362 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1363 if (HAS_PENDING_EXCEPTION) {
1364 Handle throwable(THREAD, PENDING_EXCEPTION);
1365 CLEAR_PENDING_EXCEPTION;
1366 java_lang_Throwable::print_stack_trace(throwable, tty);
1367 tty->cr();
1368 return nullptr;
1369 }
1370
1371 if (rp.had_error()) {
1372 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1373 return nullptr;
1374 }
1375 return data;
1376 }
1377
1378 int ciReplay::replay_impl(TRAPS) {
1379 HandleMark hm(THREAD);
1380 ResourceMark rm(THREAD);
1381
1382 if (ReplaySuppressInitializers > 2) {
1383 // ReplaySuppressInitializers > 2 means that we want to allow
1384 // normal VM bootstrap but once we get into the replay itself
1385 // don't allow any initializers to be run.
1386 ReplaySuppressInitializers = 1;
1387 }
1388
1389 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1390 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1391 return 1;
1392 }
1393
1394 // Load and parse the replay data
1395 CompileReplay rp(ReplayDataFile, THREAD);
1396 int exit_code = 0;
1397 if (rp.can_replay()) {
1398 rp.process(THREAD);
1399 } else {
1400 exit_code = 1;
1401 return exit_code;
1402 }
1403
1404 if (HAS_PENDING_EXCEPTION) {
1405 Handle throwable(THREAD, PENDING_EXCEPTION);
1406 CLEAR_PENDING_EXCEPTION;
1407 java_lang_Throwable::print_stack_trace(throwable, tty);
1408 tty->cr();
1409 exit_code = 2;
1410 }
1411
1412 if (rp.had_error()) {
1413 tty->print_cr("Failed on %s", rp.error_message());
1414 exit_code = 1;
1415 }
1416 return exit_code;
1417 }
1418
1419 void ciReplay::initialize(ciMethodData* m) {
1420 if (no_replay_state()) {
1421 return;
1422 }
1423
1424 ASSERT_IN_VM;
1425 ResourceMark rm;
1426
1427 Method* method = m->get_MethodData()->method();
1428 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1429 if (rec == nullptr) {
1430 // This indicates some mismatch with the original environment and
1431 // the replay environment though it's not always enough to
1432 // interfere with reproducing a bug
1433 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1434 method->print_name(tty);
1435 tty->cr();
1436 } else {
1437 m->_state = rec->_state;
1438 m->_invocation_counter = rec->_invocation_counter;
1439 if (rec->_data_length != 0) {
1440 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1441 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1442
1443 // Write the correct ciObjects back into the profile data
1444 ciEnv* env = ciEnv::current();
1445 for (int i = 0; i < rec->_classes_length; i++) {
1446 Klass *k = rec->_classes[i];
1447 // In case this class pointer is is tagged, preserve the tag bits
1448 intptr_t status = 0;
1449 if (k != nullptr) {
1450 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1451 }
1452 rec->_data[rec->_classes_offsets[i]] = status;
1453 }
1454 for (int i = 0; i < rec->_methods_length; i++) {
1455 Method *m = rec->_methods[i];
1456 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1457 env->get_metadata(m);
1458 }
1459 // Copy the updated profile data into place as intptr_ts
1460 #ifdef _LP64
1461 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1462 #else
1463 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1464 #endif
1465 }
1466
1467 // copy in the original header
1468 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1469 }
1470 }
1471
1472
1473 bool ciReplay::should_not_inline(ciMethod* method) {
1474 if (no_replay_state()) {
1475 return false;
1476 }
1477 VM_ENTRY_MARK;
1478 // ciMethod without a record shouldn't be inlined.
1479 return replay_state->find_ciMethodRecord(method->get_Method()) == nullptr;
1480 }
1481
1482 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1483 if (data != nullptr) {
1484 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1485 VM_ENTRY_MARK;
1486 // Inline record are ordered by bci and depth.
1487 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1488 if (record == nullptr) {
1489 return false;
1490 }
1491 should_delay = record->_inline_late;
1492 return true;
1493 } else if (replay_state != nullptr) {
1494 VM_ENTRY_MARK;
1495 // Inline record are ordered by bci and depth.
1496 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1497 if (record == nullptr) {
1498 return false;
1499 }
1500 should_delay = record->_inline_late;
1501 return true;
1502 }
1503 return false;
1504 }
1505
1506 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1507 if (data != nullptr) {
1508 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1509 VM_ENTRY_MARK;
1510 // Inline record are ordered by bci and depth.
1511 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == nullptr;
1512 } else if (replay_state != nullptr) {
1513 VM_ENTRY_MARK;
1514 // Inline record are ordered by bci and depth.
1515 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == nullptr;
1516 }
1517 return false;
1518 }
1519
1520 void ciReplay::initialize(ciMethod* m) {
1521 if (no_replay_state()) {
1522 return;
1523 }
1524
1525 ASSERT_IN_VM;
1526 ResourceMark rm;
1527
1528 Method* method = m->get_Method();
1529 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1530 if (rec == nullptr) {
1531 // This indicates some mismatch with the original environment and
1532 // the replay environment though it's not always enough to
1533 // interfere with reproducing a bug
1534 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1535 method->print_name(tty);
1536 tty->cr();
1537 } else {
1538 EXCEPTION_CONTEXT;
1539 // m->_instructions_size = rec->_instructions_size;
1540 m->_inline_instructions_size = -1;
1541 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1542 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1543 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1544 guarantee(mcs != nullptr, "method counters allocation failed");
1545 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1546 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1547 }
1548 }
1549
1550 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1551 assert(!no_replay_state(), "must have replay state");
1552
1553 ASSERT_IN_VM;
1554 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1555 assert(rec != nullptr, "ciInstanceKlass must be whitelisted");
1556 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1557 }
1558
1559 bool ciReplay::is_loaded(Method* method) {
1560 if (no_replay_state()) {
1561 return true;
1562 }
1563
1564 ASSERT_IN_VM;
1565 ResourceMark rm;
1566
1567 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1568 return rec != nullptr;
1569 }
1570
1571 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1572 if (no_replay_state()) {
1573 return false;
1574 }
1575
1576 // Check if klass is found on whitelist.
1577 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1578 return rec == nullptr;
1579 }
1580
1581 oop ciReplay::obj_field(oop obj, Symbol* name) {
1582 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1583
1584 do {
1585 if (!ik->has_nonstatic_fields()) {
1586 ik = ik->java_super();
1587 continue;
1588 }
1589
1590 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1591 if (fs.access_flags().is_static()) {
1592 continue;
1593 }
1594 if (fs.name() == name) {
1595 int offset = fs.offset();
1596 #ifdef ASSERT
1597 fieldDescriptor fd = fs.field_descriptor();
1598 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1599 #endif
1600 oop f = obj->obj_field(offset);
1601 return f;
1602 }
1603 }
1604
1605 ik = ik->java_super();
1606 } while (ik != nullptr);
1607 return nullptr;
1608 }
1609
1610 oop ciReplay::obj_field(oop obj, const char *name) {
1611 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1612 if (fname == nullptr) {
1613 return nullptr;
1614 }
1615 return obj_field(obj, fname);
1616 }