1 /*
2 * Copyright (c) 2013, 2024, 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 ReallocMark _nesting; // Safety checks for arena reallocation
136
137 // "compile" data
138 ciKlass* _iklass;
139 Method* _imethod;
140 int _entry_bci;
141 int _comp_level;
142
143 public:
144 CompileReplay(const char* filename, TRAPS) {
145 _thread = THREAD;
146 _loader = Handle(_thread, SystemDictionary::java_system_loader());
147 _protection_domain = Handle();
148 _protection_domain_initialized = false;
149
150 _stream = os::fopen(filename, "rt");
151 if (_stream == nullptr) {
152 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
153 }
154
155 _ci_inline_records = nullptr;
156 _error_message = nullptr;
157
158 _buffer_length = 32;
159 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
160 _bufptr = _buffer;
161
162 _imethod = nullptr;
163 _iklass = nullptr;
164 _entry_bci = 0;
165 _comp_level = 0;
166 _version = 0;
167
168 test();
169 }
170
171 ~CompileReplay() {
172 if (_stream != nullptr) fclose(_stream);
173 }
174
175 void test() {
176 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
177 _bufptr = _buffer;
178 assert(parse_int("test") == 1, "what");
179 assert(parse_int("test") == 2, "what");
180 assert(strcmp(parse_string(), "foo") == 0, "what");
181 assert(parse_int("test") == 4, "what");
182 assert(strcmp(parse_string(), "bar") == 0, "what");
183 assert(parse_intptr_t("test") == 9, "what");
184 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
185 }
186
187 bool had_error() {
188 return _error_message != nullptr || _thread->has_pending_exception();
189 }
190
191 bool can_replay() {
192 return !(_stream == nullptr || had_error());
193 }
194
195 void report_error(const char* msg) {
196 _error_message = msg;
197 }
198
199 int parse_int(const char* label) {
200 if (had_error()) {
201 return 0;
202 }
203
204 int v = 0;
205 int read;
206 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
207 report_error(label);
208 } else {
209 _bufptr += read;
210 }
211 return v;
212 }
213
214 intptr_t parse_intptr_t(const char* label) {
215 if (had_error()) {
216 return 0;
217 }
218
219 intptr_t v = 0;
220 int read;
221 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
222 report_error(label);
223 } else {
224 _bufptr += read;
225 }
226 return v;
227 }
228
229 void skip_ws() {
230 // Skip any leading whitespace
231 while (*_bufptr == ' ' || *_bufptr == '\t') {
232 _bufptr++;
233 }
234 }
235
236 // Ignore the rest of the line
237 void skip_remaining() {
238 _bufptr = &_bufptr[strlen(_bufptr)]; // skip ahead to terminator
239 }
240
241 char* scan_and_terminate(char delim) {
242 char* str = _bufptr;
243 while (*_bufptr != delim && *_bufptr != '\0') {
244 _bufptr++;
245 }
246 if (*_bufptr != '\0') {
247 *_bufptr++ = '\0';
248 }
249 if (_bufptr == str) {
250 // nothing here
251 return nullptr;
252 }
253 return str;
254 }
255
256 char* parse_string() {
257 if (had_error()) return nullptr;
258
259 skip_ws();
260 return scan_and_terminate(' ');
261 }
262
263 char* parse_quoted_string() {
264 if (had_error()) return nullptr;
265
266 skip_ws();
267
268 if (*_bufptr == '"') {
269 _bufptr++;
270 return scan_and_terminate('"');
271 } else {
272 return scan_and_terminate(' ');
273 }
274 }
275
276 char* parse_escaped_string() {
277 char* result = parse_quoted_string();
278 if (result != nullptr) {
279 unescape_string(result);
280 }
281 return result;
282 }
283
284 // Look for the tag 'tag' followed by an
285 bool parse_tag_and_count(const char* tag, int& length) {
286 const char* t = parse_string();
287 if (t == nullptr) {
288 return false;
289 }
290
291 if (strcmp(tag, t) != 0) {
292 report_error(tag);
293 return false;
294 }
295 length = parse_int("parse_tag_and_count");
296 return !had_error();
297 }
298
299 // Parse a sequence of raw data encoded as bytes and return the
300 // resulting data.
301 char* parse_data(const char* tag, int& length) {
302 int read_size = 0;
303 if (!parse_tag_and_count(tag, read_size)) {
304 return nullptr;
305 }
306
307 int actual_size = sizeof(MethodData::CompilerCounters);
308 char *result = NEW_RESOURCE_ARRAY(char, actual_size);
309 int i = 0;
310 if (read_size != actual_size) {
311 tty->print_cr("Warning: ciMethodData parsing sees MethodData size %i in file, current is %i", read_size,
312 actual_size);
313 // Replay serializes the entire MethodData, but the data is at the end.
314 // If the MethodData instance size has changed, we can pad or truncate in the beginning
315 int padding = actual_size - read_size;
316 if (padding > 0) {
317 // pad missing data with zeros
318 tty->print_cr("- Padding MethodData");
319 for (; i < padding; i++) {
320 result[i] = 0;
321 }
322 } else if (padding < 0) {
323 // drop some data
324 tty->print_cr("- Truncating MethodData");
325 for (int j = 0; j < -padding; j++) {
326 int val = parse_int("data");
327 // discard val
328 }
329 }
330 }
331
332 assert(i < actual_size, "At least some data must remain to be copied");
333 for (; i < actual_size; i++) {
334 int val = parse_int("data");
335 result[i] = val;
336 }
337 length = actual_size;
338 return result;
339 }
340
341 // Parse a standard chunk of data emitted as:
342 // 'tag' <length> # # ...
343 // Where each # is an intptr_t item
344 intptr_t* parse_intptr_data(const char* tag, int& length) {
345 if (!parse_tag_and_count(tag, length)) {
346 return nullptr;
347 }
348
349 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
350 for (int i = 0; i < length; i++) {
351 skip_ws();
352 intptr_t val = parse_intptr_t("data");
353 result[i] = val;
354 }
355 return result;
356 }
357
358 // Parse a possibly quoted version of a symbol into a symbolOop
359 Symbol* parse_symbol() {
360 const char* str = parse_escaped_string();
361 if (str != nullptr) {
362 Symbol* sym = SymbolTable::new_symbol(str);
363 return sym;
364 }
365 return nullptr;
366 }
367
368 bool parse_terminator() {
369 char* terminator = parse_string();
370 if (terminator != nullptr && strcmp(terminator, ";") == 0) {
371 return true;
372 }
373 return false;
374 }
375
376 // Parse a special hidden klass location syntax
377 // syntax: @bci <klass> <name> <signature> <bci> <location>* ;
378 // syntax: @cpi <klass> <cpi> <location>* ;
379 Klass* parse_cp_ref(TRAPS) {
380 JavaThread* thread = THREAD;
381 oop obj = nullptr;
382 char* ref = parse_string();
383 if (strcmp(ref, "bci") == 0) {
384 Method* m = parse_method(CHECK_NULL);
385 if (m == nullptr) {
386 return nullptr;
387 }
388
389 InstanceKlass* ik = m->method_holder();
390 const constantPoolHandle cp(Thread::current(), ik->constants());
391
392 // invokedynamic or invokehandle
393
394 methodHandle caller(Thread::current(), m);
395 int bci = parse_int("bci");
396 if (m->validate_bci(bci) != bci) {
397 report_error("bad bci");
398 return nullptr;
399 }
400
401 ik->link_class(CHECK_NULL);
402
403 Bytecode_invoke bytecode = Bytecode_invoke_check(caller, bci);
404 if (!Bytecodes::is_defined(bytecode.code()) || !bytecode.is_valid()) {
405 report_error("no invoke found at bci");
406 return nullptr;
407 }
408 bytecode.verify();
409 int index = bytecode.index();
410
411 CallInfo callInfo;
412 Bytecodes::Code bc = bytecode.invoke_code();
413 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
414
415 oop appendix = nullptr;
416 Method* adapter_method = nullptr;
417 int pool_index = 0;
418
419 if (bytecode.is_invokedynamic()) {
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 _nesting.check(); // Check if a reallocation in the resource arena is safe
606 int new_length = _buffer_length * 2;
607 // Next call will throw error in case of OOM.
608 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
609 _buffer_length = new_length;
610 }
611 if (c == '\n') {
612 c = getc(_stream); // get next char
613 break;
614 } else if (c == '\r') {
615 // skip LF
616 } else {
617 _buffer[buffer_pos++] = c;
618 }
619 c = getc(_stream);
620 }
621 // null terminate it, reset the pointer
622 _buffer[buffer_pos] = '\0'; // NL or EOF
623 _bufptr = _buffer;
624 return c;
625 }
626
627 // Process each line of the replay file executing each command until
628 // the file ends.
629 void process(TRAPS) {
630 int line_no = 1;
631 int c = getc(_stream);
632 while(c != EOF) {
633 c = get_line(c);
634 process_command(false, THREAD);
635 if (had_error()) {
636 int pos = _bufptr - _buffer + 1;
637 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
638 if (ReplayIgnoreInitErrors) {
639 CLEAR_PENDING_EXCEPTION;
640 _error_message = nullptr;
641 } else {
642 return;
643 }
644 }
645 line_no++;
646 }
647 reset();
648 }
649
650 void process_command(bool is_replay_inline, TRAPS) {
651 char* cmd = parse_string();
652 if (cmd == nullptr) {
653 return;
654 }
655 if (strcmp("#", cmd) == 0) {
656 // comment line, print or ignore
657 if (Verbose) {
658 tty->print_cr("# %s", _bufptr);
659 }
660 skip_remaining();
661 } else if (strcmp("version", cmd) == 0) {
662 _version = parse_int("version");
663 if (_version < 0 || _version > REPLAY_VERSION) {
664 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
665 }
666 } else if (strcmp("compile", cmd) == 0) {
667 process_compile(CHECK);
668 } else if (!is_replay_inline) {
669 if (strcmp("ciMethod", cmd) == 0) {
670 process_ciMethod(CHECK);
671 } else if (strcmp("ciMethodData", cmd) == 0) {
672 process_ciMethodData(CHECK);
673 } else if (strcmp("staticfield", cmd) == 0) {
674 process_staticfield(CHECK);
675 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
676 process_ciInstanceKlass(CHECK);
677 } else if (strcmp("instanceKlass", cmd) == 0) {
678 process_instanceKlass(CHECK);
679 #if INCLUDE_JVMTI
680 } else if (strcmp("JvmtiExport", cmd) == 0) {
681 process_JvmtiExport(CHECK);
682 #endif // INCLUDE_JVMTI
683 } else {
684 report_error("unknown command");
685 }
686 } else {
687 report_error("unknown command");
688 }
689 if (!had_error() && *_bufptr != '\0') {
690 report_error("line not properly terminated");
691 }
692 }
693
694 // validation of comp_level
695 bool is_valid_comp_level(int comp_level) {
696 const int msg_len = 256;
697 char* msg = nullptr;
698 if (!is_compile(comp_level)) {
699 msg = NEW_RESOURCE_ARRAY(char, msg_len);
700 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
701 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
702 msg = NEW_RESOURCE_ARRAY(char, msg_len);
703 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
704 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
705 msg = NEW_RESOURCE_ARRAY(char, msg_len);
706 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
707 }
708 if (msg != nullptr) {
709 report_error(msg);
710 return false;
711 }
712 return true;
713 }
714
715 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
716 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
717 _imethod = m;
718 _iklass = imethod->holder();
719 _entry_bci = entry_bci;
720 _comp_level = comp_level;
721 int line_no = 1;
722 int c = getc(_stream);
723 while(c != EOF) {
724 c = get_line(c);
725 process_command(true, CHECK_NULL);
726 if (had_error()) {
727 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
728 tty->print_cr("%s", _buffer);
729 return nullptr;
730 }
731 if (_ci_inline_records != nullptr && _ci_inline_records->length() > 0) {
732 // Found inlining record for the requested method.
733 return _ci_inline_records;
734 }
735 line_no++;
736 }
737 return nullptr;
738 }
739
740 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
741 void process_compile(TRAPS) {
742 Method* method = parse_method(CHECK);
743 if (had_error()) return;
744 int entry_bci = parse_int("entry_bci");
745 int comp_level = parse_int("comp_level");
746 if (!is_valid_comp_level(comp_level)) {
747 return;
748 }
749 if (_imethod != nullptr) {
750 // Replay Inlining
751 if (entry_bci != _entry_bci || comp_level != _comp_level) {
752 return;
753 }
754 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
755 const char* imethod_name = _imethod->name()->as_utf8();
756 const char* isignature = _imethod->signature()->as_utf8();
757 const char* klass_name = method->method_holder()->name()->as_utf8();
758 const char* method_name = method->name()->as_utf8();
759 const char* signature = method->signature()->as_utf8();
760 if (strcmp(iklass_name, klass_name) != 0 ||
761 strcmp(imethod_name, method_name) != 0 ||
762 strcmp(isignature, signature) != 0) {
763 return;
764 }
765 }
766 int inline_count = 0;
767 if (parse_tag_and_count("inline", inline_count)) {
768 // Record inlining data
769 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
770 for (int i = 0; i < inline_count; i++) {
771 int depth = parse_int("inline_depth");
772 int bci = parse_int("inline_bci");
773 if (had_error()) {
774 break;
775 }
776 int inline_late = 0;
777 if (_version >= 2) {
778 inline_late = parse_int("inline_late");
779 if (had_error()) {
780 break;
781 }
782 }
783
784 Method* inl_method = parse_method(CHECK);
785 if (had_error()) {
786 break;
787 }
788 new_ciInlineRecord(inl_method, bci, depth, inline_late);
789 }
790 }
791 if (_imethod != nullptr) {
792 return; // Replay Inlining
793 }
794 InstanceKlass* ik = method->method_holder();
795 ik->initialize(THREAD);
796 if (HAS_PENDING_EXCEPTION) {
797 oop throwable = PENDING_EXCEPTION;
798 java_lang_Throwable::print(throwable, tty);
799 tty->cr();
800 if (ReplayIgnoreInitErrors) {
801 CLEAR_PENDING_EXCEPTION;
802 ik->set_init_state(InstanceKlass::fully_initialized);
803 } else {
804 return;
805 }
806 }
807 // Make sure the existence of a prior compile doesn't stop this one
808 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
809 if (nm != nullptr) {
810 nm->make_not_entrant();
811 }
812 replay_state = this;
813 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
814 methodHandle(), 0, true, CompileTask::Reason_Replay, THREAD);
815 replay_state = nullptr;
816 }
817
818 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
819 void process_ciMethod(TRAPS) {
820 Method* method = parse_method(CHECK);
821 if (had_error()) return;
822 ciMethodRecord* rec = new_ciMethod(method);
823 rec->_invocation_counter = parse_int("invocation_counter");
824 rec->_backedge_counter = parse_int("backedge_counter");
825 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
826 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
827 rec->_instructions_size = parse_int("instructions_size");
828 }
829
830 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
831 void process_ciMethodData(TRAPS) {
832 Method* method = parse_method(CHECK);
833 if (had_error()) return;
834 /* just copied from Method, to build interpret data*/
835
836 // To be properly initialized, some profiling in the MDO needs the
837 // method to be rewritten (number of arguments at a call for instance)
838 method->method_holder()->link_class(CHECK);
839 assert(method->method_data() == nullptr, "Should only be initialized once");
840 method->build_profiling_method_data(methodHandle(THREAD, method), CHECK);
841
842 // collect and record all the needed information for later
843 ciMethodDataRecord* rec = new_ciMethodData(method);
844 rec->_state = parse_int("state");
845 if (_version < 1) {
846 parse_int("current_mileage");
847 } else {
848 rec->_invocation_counter = parse_int("invocation_counter");
849 }
850
851 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
852 if (rec->_orig_data == nullptr) {
853 return;
854 }
855 rec->_data = parse_intptr_data("data", rec->_data_length);
856 if (rec->_data == nullptr) {
857 return;
858 }
859 if (!parse_tag_and_count("oops", rec->_classes_length)) {
860 return;
861 }
862 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
863 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
864 for (int i = 0; i < rec->_classes_length; i++) {
865 int offset = parse_int("offset");
866 if (had_error()) {
867 return;
868 }
869 Klass* k = parse_klass(CHECK);
870 rec->_classes_offsets[i] = offset;
871 rec->_classes[i] = k;
872 }
873
874 if (!parse_tag_and_count("methods", rec->_methods_length)) {
875 return;
876 }
877 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
878 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
879 for (int i = 0; i < rec->_methods_length; i++) {
880 int offset = parse_int("offset");
881 if (had_error()) {
882 return;
883 }
884 Method* m = parse_method(CHECK);
885 rec->_methods_offsets[i] = offset;
886 rec->_methods[i] = m;
887 }
888 }
889
890 // instanceKlass <name>
891 // instanceKlass <constant pool ref> # <original hidden class name>
892 //
893 // Loads and initializes the klass 'name'. This can be used to
894 // create particular class loading environments
895 void process_instanceKlass(TRAPS) {
896 // just load the referenced class
897 Klass* k = parse_klass(CHECK);
898
899 if (_version >= 1) {
900 if (!_protection_domain_initialized && k != nullptr) {
901 assert(_protection_domain() == nullptr, "must be uninitialized");
902 // The first entry is the holder class of the method for which a replay compilation is requested.
903 // Use the same protection domain to load all subsequent classes in order to resolve all classes
904 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
905 _protection_domain = Handle(_thread, k->protection_domain());
906 }
907
908 _protection_domain_initialized = true;
909 }
910
911 if (k == nullptr) {
912 return;
913 }
914 const char* comment = parse_string();
915 bool is_comment = comment != nullptr && strcmp(comment, "#") == 0;
916 if (k->is_hidden() != is_comment) {
917 report_error("hidden class with comment expected");
918 return;
919 }
920 // comment, print or ignore
921 if (is_comment) {
922 if (Verbose) {
923 const char* hidden = parse_string();
924 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
925 }
926 skip_remaining();
927 }
928 }
929
930 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
931 //
932 // Load the klass 'name' and link or initialize it. Verify that the
933 // constant pool is the same length as 'length' and make sure the
934 // constant pool tags are in the same state.
935 void process_ciInstanceKlass(TRAPS) {
936 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
937 if (k == nullptr) {
938 skip_remaining();
939 return;
940 }
941 int is_linked = parse_int("is_linked");
942 int is_initialized = parse_int("is_initialized");
943 int length = parse_int("length");
944 if (is_initialized) {
945 k->initialize(THREAD);
946 if (HAS_PENDING_EXCEPTION) {
947 oop throwable = PENDING_EXCEPTION;
948 java_lang_Throwable::print(throwable, tty);
949 tty->cr();
950 if (ReplayIgnoreInitErrors) {
951 CLEAR_PENDING_EXCEPTION;
952 k->set_init_state(InstanceKlass::fully_initialized);
953 } else {
954 return;
955 }
956 }
957 } else if (is_linked) {
958 k->link_class(CHECK);
959 }
960 new_ciInstanceKlass(k);
961 ConstantPool* cp = k->constants();
962 if (length != cp->length()) {
963 report_error("constant pool length mismatch: wrong class files?");
964 return;
965 }
966
967 int parsed_two_word = 0;
968 for (int i = 1; i < length; i++) {
969 int tag = parse_int("tag");
970 if (had_error()) {
971 return;
972 }
973 switch (cp->tag_at(i).value()) {
974 case JVM_CONSTANT_UnresolvedClass: {
975 if (tag == JVM_CONSTANT_Class) {
976 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
977 Klass* k = cp->klass_at(i, CHECK);
978 }
979 break;
980 }
981 case JVM_CONSTANT_Long:
982 case JVM_CONSTANT_Double:
983 parsed_two_word = i + 1;
984
985 case JVM_CONSTANT_ClassIndex:
986 case JVM_CONSTANT_StringIndex:
987 case JVM_CONSTANT_String:
988 case JVM_CONSTANT_UnresolvedClassInError:
989 case JVM_CONSTANT_Fieldref:
990 case JVM_CONSTANT_Methodref:
991 case JVM_CONSTANT_InterfaceMethodref:
992 case JVM_CONSTANT_NameAndType:
993 case JVM_CONSTANT_Utf8:
994 case JVM_CONSTANT_Integer:
995 case JVM_CONSTANT_Float:
996 case JVM_CONSTANT_MethodHandle:
997 case JVM_CONSTANT_MethodType:
998 case JVM_CONSTANT_Dynamic:
999 case JVM_CONSTANT_InvokeDynamic:
1000 if (tag != cp->tag_at(i).value()) {
1001 report_error("tag mismatch: wrong class files?");
1002 return;
1003 }
1004 break;
1005
1006 case JVM_CONSTANT_Class:
1007 if (tag == JVM_CONSTANT_UnresolvedClass) {
1008 Klass* k = cp->klass_at(i, CHECK);
1009 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
1010 } else if (tag != JVM_CONSTANT_Class) {
1011 report_error("Unexpected tag");
1012 return;
1013 }
1014 break;
1015
1016 case 0:
1017 if (parsed_two_word == i) continue;
1018
1019 default:
1020 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1021 break;
1022 }
1023
1024 }
1025 }
1026
1027 // staticfield <klass> <name> <signature> <value>
1028 //
1029 // Initialize a class and fill in the value for a static field.
1030 // This is useful when the compile was dependent on the value of
1031 // static fields but it's impossible to properly rerun the static
1032 // initializer.
1033 void process_staticfield(TRAPS) {
1034 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1035
1036 if (k == nullptr || ReplaySuppressInitializers == 0 ||
1037 (ReplaySuppressInitializers == 2 && k->class_loader() == nullptr)) {
1038 skip_remaining();
1039 return;
1040 }
1041
1042 assert(k->is_initialized(), "must be");
1043
1044 const char* field_name = parse_escaped_string();
1045 const char* field_signature = parse_string();
1046 fieldDescriptor fd;
1047 Symbol* name = SymbolTable::new_symbol(field_name);
1048 Symbol* sig = SymbolTable::new_symbol(field_signature);
1049 if (!k->find_local_field(name, sig, &fd) ||
1050 !fd.is_static() ||
1051 fd.has_initial_value()) {
1052 report_error(field_name);
1053 return;
1054 }
1055
1056 oop java_mirror = k->java_mirror();
1057 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1058 int length = parse_int("array length");
1059 oop value = nullptr;
1060
1061 if (length != -1) {
1062 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1063 // multi dimensional array
1064 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1065 if (kelem == nullptr) {
1066 return;
1067 }
1068 int rank = 0;
1069 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1070 rank++;
1071 }
1072 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1073 dims[0] = length;
1074 for (int i = 1; i < rank; i++) {
1075 dims[i] = 1; // These aren't relevant to the compiler
1076 }
1077 value = kelem->multi_allocate(rank, dims, CHECK);
1078 } else {
1079 if (strcmp(field_signature, "[B") == 0) {
1080 value = oopFactory::new_byteArray(length, CHECK);
1081 } else if (strcmp(field_signature, "[Z") == 0) {
1082 value = oopFactory::new_boolArray(length, CHECK);
1083 } else if (strcmp(field_signature, "[C") == 0) {
1084 value = oopFactory::new_charArray(length, CHECK);
1085 } else if (strcmp(field_signature, "[S") == 0) {
1086 value = oopFactory::new_shortArray(length, CHECK);
1087 } else if (strcmp(field_signature, "[F") == 0) {
1088 value = oopFactory::new_floatArray(length, CHECK);
1089 } else if (strcmp(field_signature, "[D") == 0) {
1090 value = oopFactory::new_doubleArray(length, CHECK);
1091 } else if (strcmp(field_signature, "[I") == 0) {
1092 value = oopFactory::new_intArray(length, CHECK);
1093 } else if (strcmp(field_signature, "[J") == 0) {
1094 value = oopFactory::new_longArray(length, CHECK);
1095 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1096 field_signature[1] == JVM_SIGNATURE_CLASS) {
1097 Klass* actual_array_klass = parse_klass(CHECK);
1098 Klass* kelem = ObjArrayKlass::cast(actual_array_klass)->element_klass();
1099 value = oopFactory::new_objArray(kelem, length, CHECK);
1100 } else {
1101 report_error("unhandled array staticfield");
1102 }
1103 }
1104 }
1105 java_mirror->obj_field_put(fd.offset(), value);
1106 } else {
1107 const char* string_value = parse_escaped_string();
1108 if (strcmp(field_signature, "I") == 0) {
1109 int value = atoi(string_value);
1110 java_mirror->int_field_put(fd.offset(), value);
1111 } else if (strcmp(field_signature, "B") == 0) {
1112 int value = atoi(string_value);
1113 java_mirror->byte_field_put(fd.offset(), value);
1114 } else if (strcmp(field_signature, "C") == 0) {
1115 int value = atoi(string_value);
1116 java_mirror->char_field_put(fd.offset(), value);
1117 } else if (strcmp(field_signature, "S") == 0) {
1118 int value = atoi(string_value);
1119 java_mirror->short_field_put(fd.offset(), value);
1120 } else if (strcmp(field_signature, "Z") == 0) {
1121 int value = atoi(string_value);
1122 java_mirror->bool_field_put(fd.offset(), value);
1123 } else if (strcmp(field_signature, "J") == 0) {
1124 jlong value;
1125 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1126 fprintf(stderr, "Error parsing long: %s\n", string_value);
1127 return;
1128 }
1129 java_mirror->long_field_put(fd.offset(), value);
1130 } else if (strcmp(field_signature, "F") == 0) {
1131 float value = atof(string_value);
1132 java_mirror->float_field_put(fd.offset(), value);
1133 } else if (strcmp(field_signature, "D") == 0) {
1134 double value = atof(string_value);
1135 java_mirror->double_field_put(fd.offset(), value);
1136 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1137 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1138 java_mirror->obj_field_put(fd.offset(), value());
1139 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1140 oop value = nullptr;
1141 if (string_value != nullptr) {
1142 Klass* k = resolve_klass(string_value, CHECK);
1143 value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1144 }
1145 java_mirror->obj_field_put(fd.offset(), value);
1146 } else {
1147 report_error("unhandled staticfield");
1148 }
1149 }
1150 }
1151
1152 #if INCLUDE_JVMTI
1153 // JvmtiExport <field> <value>
1154 void process_JvmtiExport(TRAPS) {
1155 const char* field = parse_string();
1156 bool value = parse_int("JvmtiExport flag") != 0;
1157 if (strcmp(field, "can_access_local_variables") == 0) {
1158 JvmtiExport::set_can_access_local_variables(value);
1159 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1160 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1161 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1162 JvmtiExport::set_can_post_on_exceptions(value);
1163 } else {
1164 report_error("Unrecognized JvmtiExport directive");
1165 }
1166 }
1167 #endif // INCLUDE_JVMTI
1168
1169 // Create and initialize a record for a ciMethod
1170 ciMethodRecord* new_ciMethod(Method* method) {
1171 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1172 rec->_klass_name = method->method_holder()->name()->as_utf8();
1173 rec->_method_name = method->name()->as_utf8();
1174 rec->_signature = method->signature()->as_utf8();
1175 _ci_method_records.append(rec);
1176 return rec;
1177 }
1178
1179 // Lookup data for a ciMethod
1180 ciMethodRecord* find_ciMethodRecord(Method* method) {
1181 const char* klass_name = method->method_holder()->name()->as_utf8();
1182 const char* method_name = method->name()->as_utf8();
1183 const char* signature = method->signature()->as_utf8();
1184 for (int i = 0; i < _ci_method_records.length(); i++) {
1185 ciMethodRecord* rec = _ci_method_records.at(i);
1186 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1187 strcmp(rec->_method_name, method_name) == 0 &&
1188 strcmp(rec->_signature, signature) == 0) {
1189 return rec;
1190 }
1191 }
1192 return nullptr;
1193 }
1194
1195 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1196 void new_ciInstanceKlass(const InstanceKlass* klass) {
1197 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1198 rec->_klass = klass;
1199 oop java_mirror = klass->java_mirror();
1200 Handle h_java_mirror(_thread, java_mirror);
1201 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1202 _ci_instance_klass_records.append(rec);
1203 }
1204
1205 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1206 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1207 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1208 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1209 if (klass == rec->_klass) {
1210 // ciInstanceKlass for this klass was resolved.
1211 return rec;
1212 }
1213 }
1214 return nullptr;
1215 }
1216
1217 // Create and initialize a record for a ciMethodData
1218 ciMethodDataRecord* new_ciMethodData(Method* method) {
1219 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1220 rec->_klass_name = method->method_holder()->name()->as_utf8();
1221 rec->_method_name = method->name()->as_utf8();
1222 rec->_signature = method->signature()->as_utf8();
1223 _ci_method_data_records.append(rec);
1224 return rec;
1225 }
1226
1227 // Lookup data for a ciMethodData
1228 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1229 const char* klass_name = method->method_holder()->name()->as_utf8();
1230 const char* method_name = method->name()->as_utf8();
1231 const char* signature = method->signature()->as_utf8();
1232 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1233 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1234 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1235 strcmp(rec->_method_name, method_name) == 0 &&
1236 strcmp(rec->_signature, signature) == 0) {
1237 return rec;
1238 }
1239 }
1240 return nullptr;
1241 }
1242
1243 // Create and initialize a record for a ciInlineRecord
1244 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1245 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1246 rec->_klass_name = method->method_holder()->name()->as_utf8();
1247 rec->_method_name = method->name()->as_utf8();
1248 rec->_signature = method->signature()->as_utf8();
1249 rec->_inline_bci = bci;
1250 rec->_inline_depth = depth;
1251 rec->_inline_late = inline_late;
1252 _ci_inline_records->append(rec);
1253 return rec;
1254 }
1255
1256 // Lookup inlining data for a ciMethod
1257 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1258 if (_ci_inline_records != nullptr) {
1259 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1260 }
1261 return nullptr;
1262 }
1263
1264 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1265 Method* method, int bci, int depth) {
1266 if (records != nullptr) {
1267 const char* klass_name = method->method_holder()->name()->as_utf8();
1268 const char* method_name = method->name()->as_utf8();
1269 const char* signature = method->signature()->as_utf8();
1270 for (int i = 0; i < records->length(); i++) {
1271 ciInlineRecord* rec = records->at(i);
1272 if ((rec->_inline_bci == bci) &&
1273 (rec->_inline_depth == depth) &&
1274 (strcmp(rec->_klass_name, klass_name) == 0) &&
1275 (strcmp(rec->_method_name, method_name) == 0) &&
1276 (strcmp(rec->_signature, signature) == 0)) {
1277 return rec;
1278 }
1279 }
1280 }
1281 return nullptr;
1282 }
1283
1284 const char* error_message() {
1285 return _error_message;
1286 }
1287
1288 void reset() {
1289 _error_message = nullptr;
1290 _ci_method_records.clear();
1291 _ci_method_data_records.clear();
1292 }
1293
1294 // Take an ascii string contain \u#### escapes and convert it to utf8
1295 // in place.
1296 static void unescape_string(char* value) {
1297 char* from = value;
1298 char* to = value;
1299 while (*from != '\0') {
1300 if (*from != '\\') {
1301 *from++ = *to++;
1302 } else {
1303 switch (from[1]) {
1304 case 'u': {
1305 from += 2;
1306 jchar value=0;
1307 for (int i=0; i<4; i++) {
1308 char c = *from++;
1309 switch (c) {
1310 case '0': case '1': case '2': case '3': case '4':
1311 case '5': case '6': case '7': case '8': case '9':
1312 value = (value << 4) + c - '0';
1313 break;
1314 case 'a': case 'b': case 'c':
1315 case 'd': case 'e': case 'f':
1316 value = (value << 4) + 10 + c - 'a';
1317 break;
1318 case 'A': case 'B': case 'C':
1319 case 'D': case 'E': case 'F':
1320 value = (value << 4) + 10 + c - 'A';
1321 break;
1322 default:
1323 ShouldNotReachHere();
1324 }
1325 }
1326 UNICODE::convert_to_utf8(&value, 1, to);
1327 to++;
1328 break;
1329 }
1330 case 't': *to++ = '\t'; from += 2; break;
1331 case 'n': *to++ = '\n'; from += 2; break;
1332 case 'r': *to++ = '\r'; from += 2; break;
1333 case 'f': *to++ = '\f'; from += 2; break;
1334 default:
1335 ShouldNotReachHere();
1336 }
1337 }
1338 }
1339 *from = *to;
1340 }
1341 };
1342
1343 void ciReplay::replay(TRAPS) {
1344 int exit_code = replay_impl(THREAD);
1345
1346 Threads::destroy_vm();
1347
1348 vm_exit(exit_code);
1349 }
1350
1351 bool ciReplay::no_replay_state() {
1352 return replay_state == nullptr;
1353 }
1354
1355 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1356 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1357 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1358 return nullptr;
1359 }
1360
1361 VM_ENTRY_MARK;
1362 // Load and parse the replay data
1363 CompileReplay rp(InlineDataFile, THREAD);
1364 if (!rp.can_replay()) {
1365 tty->print_cr("ciReplay: !rp.can_replay()");
1366 return nullptr;
1367 }
1368 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1369 if (HAS_PENDING_EXCEPTION) {
1370 Handle throwable(THREAD, PENDING_EXCEPTION);
1371 CLEAR_PENDING_EXCEPTION;
1372 java_lang_Throwable::print_stack_trace(throwable, tty);
1373 tty->cr();
1374 return nullptr;
1375 }
1376
1377 if (rp.had_error()) {
1378 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1379 return nullptr;
1380 }
1381 return data;
1382 }
1383
1384 int ciReplay::replay_impl(TRAPS) {
1385 HandleMark hm(THREAD);
1386 ResourceMark rm(THREAD);
1387
1388 if (ReplaySuppressInitializers > 2) {
1389 // ReplaySuppressInitializers > 2 means that we want to allow
1390 // normal VM bootstrap but once we get into the replay itself
1391 // don't allow any initializers to be run.
1392 ReplaySuppressInitializers = 1;
1393 }
1394
1395 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1396 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1397 return 1;
1398 }
1399
1400 // Load and parse the replay data
1401 CompileReplay rp(ReplayDataFile, THREAD);
1402 int exit_code = 0;
1403 if (rp.can_replay()) {
1404 rp.process(THREAD);
1405 } else {
1406 exit_code = 1;
1407 return exit_code;
1408 }
1409
1410 if (HAS_PENDING_EXCEPTION) {
1411 Handle throwable(THREAD, PENDING_EXCEPTION);
1412 CLEAR_PENDING_EXCEPTION;
1413 java_lang_Throwable::print_stack_trace(throwable, tty);
1414 tty->cr();
1415 exit_code = 2;
1416 }
1417
1418 if (rp.had_error()) {
1419 tty->print_cr("Failed on %s", rp.error_message());
1420 exit_code = 1;
1421 }
1422 return exit_code;
1423 }
1424
1425 void ciReplay::initialize(ciMethodData* m) {
1426 if (no_replay_state()) {
1427 return;
1428 }
1429
1430 ASSERT_IN_VM;
1431 ResourceMark rm;
1432
1433 Method* method = m->get_MethodData()->method();
1434 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1435 if (rec == nullptr) {
1436 // This indicates some mismatch with the original environment and
1437 // the replay environment though it's not always enough to
1438 // interfere with reproducing a bug
1439 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1440 method->print_name(tty);
1441 tty->cr();
1442 } else {
1443 m->_state = rec->_state;
1444 m->_invocation_counter = rec->_invocation_counter;
1445 if (rec->_data_length != 0) {
1446 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1447 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1448
1449 // Write the correct ciObjects back into the profile data
1450 ciEnv* env = ciEnv::current();
1451 for (int i = 0; i < rec->_classes_length; i++) {
1452 Klass *k = rec->_classes[i];
1453 // In case this class pointer is is tagged, preserve the tag bits
1454 intptr_t status = 0;
1455 if (k != nullptr) {
1456 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1457 }
1458 rec->_data[rec->_classes_offsets[i]] = status;
1459 }
1460 for (int i = 0; i < rec->_methods_length; i++) {
1461 Method *m = rec->_methods[i];
1462 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1463 env->get_metadata(m);
1464 }
1465 // Copy the updated profile data into place as intptr_ts
1466 #ifdef _LP64
1467 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1468 #else
1469 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1470 #endif
1471 }
1472
1473 // copy in the original header
1474 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1475 }
1476 }
1477
1478
1479 bool ciReplay::should_not_inline(ciMethod* method) {
1480 if (no_replay_state()) {
1481 return false;
1482 }
1483 VM_ENTRY_MARK;
1484 // ciMethod without a record shouldn't be inlined.
1485 return replay_state->find_ciMethodRecord(method->get_Method()) == nullptr;
1486 }
1487
1488 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1489 if (data != nullptr) {
1490 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1491 VM_ENTRY_MARK;
1492 // Inline record are ordered by bci and depth.
1493 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1494 if (record == nullptr) {
1495 return false;
1496 }
1497 should_delay = record->_inline_late;
1498 return true;
1499 } else if (replay_state != nullptr) {
1500 VM_ENTRY_MARK;
1501 // Inline record are ordered by bci and depth.
1502 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1503 if (record == nullptr) {
1504 return false;
1505 }
1506 should_delay = record->_inline_late;
1507 return true;
1508 }
1509 return false;
1510 }
1511
1512 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1513 if (data != nullptr) {
1514 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1515 VM_ENTRY_MARK;
1516 // Inline record are ordered by bci and depth.
1517 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == nullptr;
1518 } else if (replay_state != nullptr) {
1519 VM_ENTRY_MARK;
1520 // Inline record are ordered by bci and depth.
1521 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == nullptr;
1522 }
1523 return false;
1524 }
1525
1526 void ciReplay::initialize(ciMethod* m) {
1527 if (no_replay_state()) {
1528 return;
1529 }
1530
1531 ASSERT_IN_VM;
1532 ResourceMark rm;
1533
1534 Method* method = m->get_Method();
1535 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1536 if (rec == nullptr) {
1537 // This indicates some mismatch with the original environment and
1538 // the replay environment though it's not always enough to
1539 // interfere with reproducing a bug
1540 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1541 method->print_name(tty);
1542 tty->cr();
1543 } else {
1544 EXCEPTION_CONTEXT;
1545 // m->_instructions_size = rec->_instructions_size;
1546 m->_inline_instructions_size = -1;
1547 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1548 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1549 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1550 guarantee(mcs != nullptr, "method counters allocation failed");
1551 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1552 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1553 }
1554 }
1555
1556 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1557 assert(!no_replay_state(), "must have replay state");
1558
1559 ASSERT_IN_VM;
1560 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1561 assert(rec != nullptr, "ciInstanceKlass must be whitelisted");
1562 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1563 }
1564
1565 bool ciReplay::is_loaded(Method* method) {
1566 if (no_replay_state()) {
1567 return true;
1568 }
1569
1570 ASSERT_IN_VM;
1571 ResourceMark rm;
1572
1573 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1574 return rec != nullptr;
1575 }
1576
1577 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1578 if (no_replay_state()) {
1579 return false;
1580 }
1581
1582 // Check if klass is found on whitelist.
1583 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1584 return rec == nullptr;
1585 }
1586
1587 oop ciReplay::obj_field(oop obj, Symbol* name) {
1588 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1589
1590 do {
1591 if (!ik->has_nonstatic_fields()) {
1592 ik = ik->java_super();
1593 continue;
1594 }
1595
1596 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1597 if (fs.access_flags().is_static()) {
1598 continue;
1599 }
1600 if (fs.name() == name) {
1601 int offset = fs.offset();
1602 #ifdef ASSERT
1603 fieldDescriptor fd = fs.field_descriptor();
1604 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1605 #endif
1606 oop f = obj->obj_field(offset);
1607 return f;
1608 }
1609 }
1610
1611 ik = ik->java_super();
1612 } while (ik != nullptr);
1613 return nullptr;
1614 }
1615
1616 oop ciReplay::obj_field(oop obj, const char *name) {
1617 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1618 if (fname == nullptr) {
1619 return nullptr;
1620 }
1621 return obj_field(obj, fname);
1622 }