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 ConstantPoolCacheEntry* cp_cache_entry = nullptr;
411 CallInfo callInfo;
412 Bytecodes::Code bc = bytecode.invoke_code();
413 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
414
415 // ResolvedIndyEntry and ConstantPoolCacheEntry must currently coexist.
416 // To address this, the variables below contain the values that *might*
417 // be used to avoid multiple blocks of similar code. When CPCE is obsoleted
418 // these can be removed
419 oop appendix = nullptr;
420 Method* adapter_method = nullptr;
421 int pool_index = 0;
422
423 if (bytecode.is_invokedynamic()) {
424 index = cp->decode_invokedynamic_index(index);
425 cp->cache()->set_dynamic_call(callInfo, index);
426
427 appendix = cp->resolved_reference_from_indy(index);
428 adapter_method = cp->resolved_indy_entry_at(index)->method();
429 pool_index = cp->resolved_indy_entry_at(index)->constant_pool_index();
430 } else if (bytecode.is_invokehandle()) {
431 #ifdef ASSERT
432 Klass* holder = cp->klass_ref_at(index, bytecode.code(), CHECK_NULL);
433 Symbol* name = cp->name_ref_at(index, bytecode.code());
434 assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
435 #endif
436 cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
437 cp_cache_entry->set_method_handle(cp, callInfo);
438
439 appendix = cp_cache_entry->appendix_if_resolved(cp);
440 adapter_method = cp_cache_entry->f1_as_method();
441 pool_index = cp_cache_entry->constant_pool_index();
442 } else {
443 report_error("no dynamic invoke found");
444 return nullptr;
445 }
446 char* dyno_ref = parse_string();
447 if (strcmp(dyno_ref, "<appendix>") == 0) {
448 obj = appendix;
449 } else if (strcmp(dyno_ref, "<adapter>") == 0) {
450 if (!parse_terminator()) {
451 report_error("no dynamic invoke found");
452 return nullptr;
453 }
454 Method* adapter = adapter_method;
455 if (adapter == nullptr) {
456 report_error("no adapter found");
457 return nullptr;
458 }
459 return adapter->method_holder();
460 } else if (strcmp(dyno_ref, "<bsm>") == 0) {
461 BootstrapInfo bootstrap_specifier(cp, pool_index, index);
462 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL);
463 } else {
464 report_error("unrecognized token");
465 return nullptr;
466 }
467 } else {
468 // constant pool ref (MethodHandle)
469 if (strcmp(ref, "cpi") != 0) {
470 report_error("unexpected token");
471 return nullptr;
472 }
473
474 Klass* k = parse_klass(CHECK_NULL);
475 if (k == nullptr) {
476 return nullptr;
477 }
478 InstanceKlass* ik = InstanceKlass::cast(k);
479 const constantPoolHandle cp(Thread::current(), ik->constants());
480
481 int cpi = parse_int("cpi");
482
483 if (cpi >= cp->length()) {
484 report_error("bad cpi");
485 return nullptr;
486 }
487 if (!cp->tag_at(cpi).is_method_handle()) {
488 report_error("no method handle found at cpi");
489 return nullptr;
490 }
491 ik->link_class(CHECK_NULL);
492 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL);
493 }
494 if (obj == nullptr) {
495 report_error("null cp object found");
496 return nullptr;
497 }
498 Klass* k = nullptr;
499 skip_ws();
500 // loop: read fields
501 char* field = nullptr;
502 do {
503 field = parse_string();
504 if (field == nullptr) {
505 report_error("no field found");
506 return nullptr;
507 }
508 if (strcmp(field, ";") == 0) {
509 break;
510 }
511 // raw Method*
512 if (strcmp(field, "<vmtarget>") == 0) {
513 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
514 k = (vmtarget == nullptr) ? nullptr : vmtarget->method_holder();
515 if (k == nullptr) {
516 report_error("null vmtarget found");
517 return nullptr;
518 }
519 if (!parse_terminator()) {
520 report_error("missing terminator");
521 return nullptr;
522 }
523 return k;
524 }
525 obj = ciReplay::obj_field(obj, field);
526 // array
527 if (obj != nullptr && obj->is_objArray()) {
528 objArrayOop arr = (objArrayOop)obj;
529 int index = parse_int("index");
530 if (index >= arr->length()) {
531 report_error("bad array index");
532 return nullptr;
533 }
534 obj = arr->obj_at(index);
535 }
536 } while (obj != nullptr);
537 if (obj == nullptr) {
538 report_error("null field found");
539 return nullptr;
540 }
541 k = obj->klass();
542 return k;
543 }
544
545 // Parse a valid klass name and look it up
546 // syntax: <name>
547 // syntax: <constant pool ref>
548 Klass* parse_klass(TRAPS) {
549 skip_ws();
550 // check for constant pool object reference (for a dynamic/hidden class)
551 bool cp_ref = (*_bufptr == '@');
552 if (cp_ref) {
553 ++_bufptr;
554 Klass* k = parse_cp_ref(CHECK_NULL);
555 if (k != nullptr && !k->is_hidden()) {
556 report_error("expected hidden class");
557 return nullptr;
558 }
559 return k;
560 }
561 char* str = parse_escaped_string();
562 Symbol* klass_name = SymbolTable::new_symbol(str);
563 if (klass_name != nullptr) {
564 Klass* k = nullptr;
565 if (_iklass != nullptr) {
566 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
567 } else {
568 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
569 }
570 if (HAS_PENDING_EXCEPTION) {
571 oop throwable = PENDING_EXCEPTION;
572 java_lang_Throwable::print(throwable, tty);
573 tty->cr();
574 report_error(str);
575 if (ReplayIgnoreInitErrors) {
576 CLEAR_PENDING_EXCEPTION;
577 _error_message = nullptr;
578 }
579 return nullptr;
580 }
581 return k;
582 }
583 return nullptr;
584 }
585
586 // Lookup a klass
587 Klass* resolve_klass(const char* klass, TRAPS) {
588 Symbol* klass_name = SymbolTable::new_symbol(klass);
589 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
590 }
591
592 // Parse the standard tuple of <klass> <name> <signature>
593 Method* parse_method(TRAPS) {
594 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
595 if (k == nullptr) {
596 report_error("Can't find holder klass");
597 return nullptr;
598 }
599 Symbol* method_name = parse_symbol();
600 Symbol* method_signature = parse_symbol();
601 Method* m = k->find_method(method_name, method_signature);
602 if (m == nullptr) {
603 report_error("Can't find method");
604 }
605 return m;
606 }
607
608 int get_line(int c) {
609 int buffer_pos = 0;
610 while(c != EOF) {
611 if (buffer_pos + 1 >= _buffer_length) {
612 int new_length = _buffer_length * 2;
613 // Next call will throw error in case of OOM.
614 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
615 _buffer_length = new_length;
616 }
617 if (c == '\n') {
618 c = getc(_stream); // get next char
619 break;
620 } else if (c == '\r') {
621 // skip LF
622 } else {
623 _buffer[buffer_pos++] = c;
624 }
625 c = getc(_stream);
626 }
627 // null terminate it, reset the pointer
628 _buffer[buffer_pos] = '\0'; // NL or EOF
629 _bufptr = _buffer;
630 return c;
631 }
632
633 // Process each line of the replay file executing each command until
634 // the file ends.
635 void process(TRAPS) {
636 int line_no = 1;
637 int c = getc(_stream);
638 while(c != EOF) {
639 c = get_line(c);
640 process_command(false, THREAD);
641 if (had_error()) {
642 int pos = _bufptr - _buffer + 1;
643 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
644 if (ReplayIgnoreInitErrors) {
645 CLEAR_PENDING_EXCEPTION;
646 _error_message = nullptr;
647 } else {
648 return;
649 }
650 }
651 line_no++;
652 }
653 reset();
654 }
655
656 void process_command(bool is_replay_inline, TRAPS) {
657 char* cmd = parse_string();
658 if (cmd == nullptr) {
659 return;
660 }
661 if (strcmp("#", cmd) == 0) {
662 // comment line, print or ignore
663 if (Verbose) {
664 tty->print_cr("# %s", _bufptr);
665 }
666 skip_remaining();
667 } else if (strcmp("version", cmd) == 0) {
668 _version = parse_int("version");
669 if (_version < 0 || _version > REPLAY_VERSION) {
670 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
671 }
672 } else if (strcmp("compile", cmd) == 0) {
673 process_compile(CHECK);
674 } else if (!is_replay_inline) {
675 if (strcmp("ciMethod", cmd) == 0) {
676 process_ciMethod(CHECK);
677 } else if (strcmp("ciMethodData", cmd) == 0) {
678 process_ciMethodData(CHECK);
679 } else if (strcmp("staticfield", cmd) == 0) {
680 process_staticfield(CHECK);
681 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
682 process_ciInstanceKlass(CHECK);
683 } else if (strcmp("instanceKlass", cmd) == 0) {
684 process_instanceKlass(CHECK);
685 #if INCLUDE_JVMTI
686 } else if (strcmp("JvmtiExport", cmd) == 0) {
687 process_JvmtiExport(CHECK);
688 #endif // INCLUDE_JVMTI
689 } else {
690 report_error("unknown command");
691 }
692 } else {
693 report_error("unknown command");
694 }
695 if (!had_error() && *_bufptr != '\0') {
696 report_error("line not properly terminated");
697 }
698 }
699
700 // validation of comp_level
701 bool is_valid_comp_level(int comp_level) {
702 const int msg_len = 256;
703 char* msg = nullptr;
704 if (!is_compile(comp_level)) {
705 msg = NEW_RESOURCE_ARRAY(char, msg_len);
706 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
707 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
708 msg = NEW_RESOURCE_ARRAY(char, msg_len);
709 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
710 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
711 msg = NEW_RESOURCE_ARRAY(char, msg_len);
712 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
713 }
714 if (msg != nullptr) {
715 report_error(msg);
716 return false;
717 }
718 return true;
719 }
720
721 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
722 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
723 _imethod = m;
724 _iklass = imethod->holder();
725 _entry_bci = entry_bci;
726 _comp_level = comp_level;
727 int line_no = 1;
728 int c = getc(_stream);
729 while(c != EOF) {
730 c = get_line(c);
731 process_command(true, CHECK_NULL);
732 if (had_error()) {
733 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
734 tty->print_cr("%s", _buffer);
735 return nullptr;
736 }
737 if (_ci_inline_records != nullptr && _ci_inline_records->length() > 0) {
738 // Found inlining record for the requested method.
739 return _ci_inline_records;
740 }
741 line_no++;
742 }
743 return nullptr;
744 }
745
746 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
747 void process_compile(TRAPS) {
748 Method* method = parse_method(CHECK);
749 if (had_error()) return;
750 int entry_bci = parse_int("entry_bci");
751 int comp_level = parse_int("comp_level");
752 if (!is_valid_comp_level(comp_level)) {
753 return;
754 }
755 if (_imethod != nullptr) {
756 // Replay Inlining
757 if (entry_bci != _entry_bci || comp_level != _comp_level) {
758 return;
759 }
760 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
761 const char* imethod_name = _imethod->name()->as_utf8();
762 const char* isignature = _imethod->signature()->as_utf8();
763 const char* klass_name = method->method_holder()->name()->as_utf8();
764 const char* method_name = method->name()->as_utf8();
765 const char* signature = method->signature()->as_utf8();
766 if (strcmp(iklass_name, klass_name) != 0 ||
767 strcmp(imethod_name, method_name) != 0 ||
768 strcmp(isignature, signature) != 0) {
769 return;
770 }
771 }
772 int inline_count = 0;
773 if (parse_tag_and_count("inline", inline_count)) {
774 // Record inlining data
775 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
776 for (int i = 0; i < inline_count; i++) {
777 int depth = parse_int("inline_depth");
778 int bci = parse_int("inline_bci");
779 if (had_error()) {
780 break;
781 }
782 int inline_late = 0;
783 if (_version >= 2) {
784 inline_late = parse_int("inline_late");
785 if (had_error()) {
786 break;
787 }
788 }
789
790 Method* inl_method = parse_method(CHECK);
791 if (had_error()) {
792 break;
793 }
794 new_ciInlineRecord(inl_method, bci, depth, inline_late);
795 }
796 }
797 if (_imethod != nullptr) {
798 return; // Replay Inlining
799 }
800 InstanceKlass* ik = method->method_holder();
801 ik->initialize(THREAD);
802 if (HAS_PENDING_EXCEPTION) {
803 oop throwable = PENDING_EXCEPTION;
804 java_lang_Throwable::print(throwable, tty);
805 tty->cr();
806 if (ReplayIgnoreInitErrors) {
807 CLEAR_PENDING_EXCEPTION;
808 ik->set_init_state(InstanceKlass::fully_initialized);
809 } else {
810 return;
811 }
812 }
813 // Make sure the existence of a prior compile doesn't stop this one
814 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
815 if (nm != nullptr) {
816 nm->make_not_entrant();
817 }
818 replay_state = this;
819 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
820 methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
821 replay_state = nullptr;
822 }
823
824 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
825 void process_ciMethod(TRAPS) {
826 Method* method = parse_method(CHECK);
827 if (had_error()) return;
828 ciMethodRecord* rec = new_ciMethod(method);
829 rec->_invocation_counter = parse_int("invocation_counter");
830 rec->_backedge_counter = parse_int("backedge_counter");
831 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
832 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
833 rec->_instructions_size = parse_int("instructions_size");
834 }
835
836 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
837 void process_ciMethodData(TRAPS) {
838 Method* method = parse_method(CHECK);
839 if (had_error()) return;
840 /* just copied from Method, to build interpret data*/
841
842 // To be properly initialized, some profiling in the MDO needs the
843 // method to be rewritten (number of arguments at a call for instance)
844 method->method_holder()->link_class(CHECK);
845 assert(method->method_data() == nullptr, "Should only be initialized once");
846 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
847 MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK);
848 method->set_method_data(method_data);
849
850 // collect and record all the needed information for later
851 ciMethodDataRecord* rec = new_ciMethodData(method);
852 rec->_state = parse_int("state");
853 if (_version < 1) {
854 parse_int("current_mileage");
855 } else {
856 rec->_invocation_counter = parse_int("invocation_counter");
857 }
858
859 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
860 if (rec->_orig_data == nullptr) {
861 return;
862 }
863 rec->_data = parse_intptr_data("data", rec->_data_length);
864 if (rec->_data == nullptr) {
865 return;
866 }
867 if (!parse_tag_and_count("oops", rec->_classes_length)) {
868 return;
869 }
870 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
871 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
872 for (int i = 0; i < rec->_classes_length; i++) {
873 int offset = parse_int("offset");
874 if (had_error()) {
875 return;
876 }
877 Klass* k = parse_klass(CHECK);
878 rec->_classes_offsets[i] = offset;
879 rec->_classes[i] = k;
880 }
881
882 if (!parse_tag_and_count("methods", rec->_methods_length)) {
883 return;
884 }
885 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
886 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
887 for (int i = 0; i < rec->_methods_length; i++) {
888 int offset = parse_int("offset");
889 if (had_error()) {
890 return;
891 }
892 Method* m = parse_method(CHECK);
893 rec->_methods_offsets[i] = offset;
894 rec->_methods[i] = m;
895 }
896 }
897
898 // instanceKlass <name>
899 // instanceKlass <constant pool ref> # <original hidden class name>
900 //
901 // Loads and initializes the klass 'name'. This can be used to
902 // create particular class loading environments
903 void process_instanceKlass(TRAPS) {
904 // just load the referenced class
905 Klass* k = parse_klass(CHECK);
906
907 if (_version >= 1) {
908 if (!_protection_domain_initialized && k != nullptr) {
909 assert(_protection_domain() == nullptr, "must be uninitialized");
910 // The first entry is the holder class of the method for which a replay compilation is requested.
911 // Use the same protection domain to load all subsequent classes in order to resolve all classes
912 // in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
913 _protection_domain = Handle(_thread, k->protection_domain());
914 }
915
916 _protection_domain_initialized = true;
917 }
918
919 if (k == nullptr) {
920 return;
921 }
922 const char* comment = parse_string();
923 bool is_comment = comment != nullptr && strcmp(comment, "#") == 0;
924 if (k->is_hidden() != is_comment) {
925 report_error("hidden class with comment expected");
926 return;
927 }
928 // comment, print or ignore
929 if (is_comment) {
930 if (Verbose) {
931 const char* hidden = parse_string();
932 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
933 }
934 skip_remaining();
935 }
936 }
937
938 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
939 //
940 // Load the klass 'name' and link or initialize it. Verify that the
941 // constant pool is the same length as 'length' and make sure the
942 // constant pool tags are in the same state.
943 void process_ciInstanceKlass(TRAPS) {
944 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
945 if (k == nullptr) {
946 skip_remaining();
947 return;
948 }
949 int is_linked = parse_int("is_linked");
950 int is_initialized = parse_int("is_initialized");
951 int length = parse_int("length");
952 if (is_initialized) {
953 k->initialize(THREAD);
954 if (HAS_PENDING_EXCEPTION) {
955 oop throwable = PENDING_EXCEPTION;
956 java_lang_Throwable::print(throwable, tty);
957 tty->cr();
958 if (ReplayIgnoreInitErrors) {
959 CLEAR_PENDING_EXCEPTION;
960 k->set_init_state(InstanceKlass::fully_initialized);
961 } else {
962 return;
963 }
964 }
965 } else if (is_linked) {
966 k->link_class(CHECK);
967 }
968 new_ciInstanceKlass(k);
969 ConstantPool* cp = k->constants();
970 if (length != cp->length()) {
971 report_error("constant pool length mismatch: wrong class files?");
972 return;
973 }
974
975 int parsed_two_word = 0;
976 for (int i = 1; i < length; i++) {
977 int tag = parse_int("tag");
978 if (had_error()) {
979 return;
980 }
981 switch (cp->tag_at(i).value()) {
982 case JVM_CONSTANT_UnresolvedClass: {
983 if (tag == JVM_CONSTANT_Class) {
984 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
985 Klass* k = cp->klass_at(i, CHECK);
986 }
987 break;
988 }
989 case JVM_CONSTANT_Long:
990 case JVM_CONSTANT_Double:
991 parsed_two_word = i + 1;
992
993 case JVM_CONSTANT_ClassIndex:
994 case JVM_CONSTANT_StringIndex:
995 case JVM_CONSTANT_String:
996 case JVM_CONSTANT_UnresolvedClassInError:
997 case JVM_CONSTANT_Fieldref:
998 case JVM_CONSTANT_Methodref:
999 case JVM_CONSTANT_InterfaceMethodref:
1000 case JVM_CONSTANT_NameAndType:
1001 case JVM_CONSTANT_Utf8:
1002 case JVM_CONSTANT_Integer:
1003 case JVM_CONSTANT_Float:
1004 case JVM_CONSTANT_MethodHandle:
1005 case JVM_CONSTANT_MethodType:
1006 case JVM_CONSTANT_Dynamic:
1007 case JVM_CONSTANT_InvokeDynamic:
1008 if (tag != cp->tag_at(i).value()) {
1009 report_error("tag mismatch: wrong class files?");
1010 return;
1011 }
1012 break;
1013
1014 case JVM_CONSTANT_Class:
1015 if (tag == JVM_CONSTANT_UnresolvedClass) {
1016 Klass* k = cp->klass_at(i, CHECK);
1017 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
1018 } else if (tag != JVM_CONSTANT_Class) {
1019 report_error("Unexpected tag");
1020 return;
1021 }
1022 break;
1023
1024 case 0:
1025 if (parsed_two_word == i) continue;
1026
1027 default:
1028 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1029 break;
1030 }
1031
1032 }
1033 }
1034
1035 // staticfield <klass> <name> <signature> <value>
1036 //
1037 // Initialize a class and fill in the value for a static field.
1038 // This is useful when the compile was dependent on the value of
1039 // static fields but it's impossible to properly rerun the static
1040 // initializer.
1041 void process_staticfield(TRAPS) {
1042 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1043
1044 if (k == nullptr || ReplaySuppressInitializers == 0 ||
1045 (ReplaySuppressInitializers == 2 && k->class_loader() == nullptr)) {
1046 skip_remaining();
1047 return;
1048 }
1049
1050 assert(k->is_initialized(), "must be");
1051
1052 const char* field_name = parse_escaped_string();
1053 const char* field_signature = parse_string();
1054 fieldDescriptor fd;
1055 Symbol* name = SymbolTable::new_symbol(field_name);
1056 Symbol* sig = SymbolTable::new_symbol(field_signature);
1057 if (!k->find_local_field(name, sig, &fd) ||
1058 !fd.is_static() ||
1059 fd.has_initial_value()) {
1060 report_error(field_name);
1061 return;
1062 }
1063
1064 oop java_mirror = k->java_mirror();
1065 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1066 int length = parse_int("array length");
1067 oop value = nullptr;
1068
1069 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1070 // multi dimensional array
1071 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1072 if (kelem == nullptr) {
1073 return;
1074 }
1075 int rank = 0;
1076 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1077 rank++;
1078 }
1079 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1080 dims[0] = length;
1081 for (int i = 1; i < rank; i++) {
1082 dims[i] = 1; // These aren't relevant to the compiler
1083 }
1084 value = kelem->multi_allocate(rank, dims, CHECK);
1085 } else {
1086 if (strcmp(field_signature, "[B") == 0) {
1087 value = oopFactory::new_byteArray(length, CHECK);
1088 } else if (strcmp(field_signature, "[Z") == 0) {
1089 value = oopFactory::new_boolArray(length, CHECK);
1090 } else if (strcmp(field_signature, "[C") == 0) {
1091 value = oopFactory::new_charArray(length, CHECK);
1092 } else if (strcmp(field_signature, "[S") == 0) {
1093 value = oopFactory::new_shortArray(length, CHECK);
1094 } else if (strcmp(field_signature, "[F") == 0) {
1095 value = oopFactory::new_floatArray(length, CHECK);
1096 } else if (strcmp(field_signature, "[D") == 0) {
1097 value = oopFactory::new_doubleArray(length, CHECK);
1098 } else if (strcmp(field_signature, "[I") == 0) {
1099 value = oopFactory::new_intArray(length, CHECK);
1100 } else if (strcmp(field_signature, "[J") == 0) {
1101 value = oopFactory::new_longArray(length, CHECK);
1102 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1103 field_signature[1] == JVM_SIGNATURE_CLASS) {
1104 parse_klass(CHECK); // eat up the array class name
1105 Klass* kelem = resolve_klass(field_signature + 1, CHECK);
1106 value = oopFactory::new_objArray(kelem, length, CHECK);
1107 } else {
1108 report_error("unhandled array staticfield");
1109 }
1110 }
1111 java_mirror->obj_field_put(fd.offset(), value);
1112 } else {
1113 const char* string_value = parse_escaped_string();
1114 if (strcmp(field_signature, "I") == 0) {
1115 int value = atoi(string_value);
1116 java_mirror->int_field_put(fd.offset(), value);
1117 } else if (strcmp(field_signature, "B") == 0) {
1118 int value = atoi(string_value);
1119 java_mirror->byte_field_put(fd.offset(), value);
1120 } else if (strcmp(field_signature, "C") == 0) {
1121 int value = atoi(string_value);
1122 java_mirror->char_field_put(fd.offset(), value);
1123 } else if (strcmp(field_signature, "S") == 0) {
1124 int value = atoi(string_value);
1125 java_mirror->short_field_put(fd.offset(), value);
1126 } else if (strcmp(field_signature, "Z") == 0) {
1127 int value = atoi(string_value);
1128 java_mirror->bool_field_put(fd.offset(), value);
1129 } else if (strcmp(field_signature, "J") == 0) {
1130 jlong value;
1131 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1132 fprintf(stderr, "Error parsing long: %s\n", string_value);
1133 return;
1134 }
1135 java_mirror->long_field_put(fd.offset(), value);
1136 } else if (strcmp(field_signature, "F") == 0) {
1137 float value = atof(string_value);
1138 java_mirror->float_field_put(fd.offset(), value);
1139 } else if (strcmp(field_signature, "D") == 0) {
1140 double value = atof(string_value);
1141 java_mirror->double_field_put(fd.offset(), value);
1142 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1143 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1144 java_mirror->obj_field_put(fd.offset(), value());
1145 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1146 Klass* k = resolve_klass(string_value, CHECK);
1147 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1148 java_mirror->obj_field_put(fd.offset(), value);
1149 } else {
1150 report_error("unhandled staticfield");
1151 }
1152 }
1153 }
1154
1155 #if INCLUDE_JVMTI
1156 // JvmtiExport <field> <value>
1157 void process_JvmtiExport(TRAPS) {
1158 const char* field = parse_string();
1159 bool value = parse_int("JvmtiExport flag") != 0;
1160 if (strcmp(field, "can_access_local_variables") == 0) {
1161 JvmtiExport::set_can_access_local_variables(value);
1162 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1163 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1164 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1165 JvmtiExport::set_can_post_on_exceptions(value);
1166 } else {
1167 report_error("Unrecognized JvmtiExport directive");
1168 }
1169 }
1170 #endif // INCLUDE_JVMTI
1171
1172 // Create and initialize a record for a ciMethod
1173 ciMethodRecord* new_ciMethod(Method* method) {
1174 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1175 rec->_klass_name = method->method_holder()->name()->as_utf8();
1176 rec->_method_name = method->name()->as_utf8();
1177 rec->_signature = method->signature()->as_utf8();
1178 _ci_method_records.append(rec);
1179 return rec;
1180 }
1181
1182 // Lookup data for a ciMethod
1183 ciMethodRecord* find_ciMethodRecord(Method* method) {
1184 const char* klass_name = method->method_holder()->name()->as_utf8();
1185 const char* method_name = method->name()->as_utf8();
1186 const char* signature = method->signature()->as_utf8();
1187 for (int i = 0; i < _ci_method_records.length(); i++) {
1188 ciMethodRecord* rec = _ci_method_records.at(i);
1189 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1190 strcmp(rec->_method_name, method_name) == 0 &&
1191 strcmp(rec->_signature, signature) == 0) {
1192 return rec;
1193 }
1194 }
1195 return nullptr;
1196 }
1197
1198 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1199 void new_ciInstanceKlass(const InstanceKlass* klass) {
1200 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1201 rec->_klass = klass;
1202 oop java_mirror = klass->java_mirror();
1203 Handle h_java_mirror(_thread, java_mirror);
1204 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1205 _ci_instance_klass_records.append(rec);
1206 }
1207
1208 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1209 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1210 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1211 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1212 if (klass == rec->_klass) {
1213 // ciInstanceKlass for this klass was resolved.
1214 return rec;
1215 }
1216 }
1217 return nullptr;
1218 }
1219
1220 // Create and initialize a record for a ciMethodData
1221 ciMethodDataRecord* new_ciMethodData(Method* method) {
1222 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1223 rec->_klass_name = method->method_holder()->name()->as_utf8();
1224 rec->_method_name = method->name()->as_utf8();
1225 rec->_signature = method->signature()->as_utf8();
1226 _ci_method_data_records.append(rec);
1227 return rec;
1228 }
1229
1230 // Lookup data for a ciMethodData
1231 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1232 const char* klass_name = method->method_holder()->name()->as_utf8();
1233 const char* method_name = method->name()->as_utf8();
1234 const char* signature = method->signature()->as_utf8();
1235 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1236 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1237 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1238 strcmp(rec->_method_name, method_name) == 0 &&
1239 strcmp(rec->_signature, signature) == 0) {
1240 return rec;
1241 }
1242 }
1243 return nullptr;
1244 }
1245
1246 // Create and initialize a record for a ciInlineRecord
1247 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1248 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1249 rec->_klass_name = method->method_holder()->name()->as_utf8();
1250 rec->_method_name = method->name()->as_utf8();
1251 rec->_signature = method->signature()->as_utf8();
1252 rec->_inline_bci = bci;
1253 rec->_inline_depth = depth;
1254 rec->_inline_late = inline_late;
1255 _ci_inline_records->append(rec);
1256 return rec;
1257 }
1258
1259 // Lookup inlining data for a ciMethod
1260 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1261 if (_ci_inline_records != nullptr) {
1262 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1263 }
1264 return nullptr;
1265 }
1266
1267 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1268 Method* method, int bci, int depth) {
1269 if (records != nullptr) {
1270 const char* klass_name = method->method_holder()->name()->as_utf8();
1271 const char* method_name = method->name()->as_utf8();
1272 const char* signature = method->signature()->as_utf8();
1273 for (int i = 0; i < records->length(); i++) {
1274 ciInlineRecord* rec = records->at(i);
1275 if ((rec->_inline_bci == bci) &&
1276 (rec->_inline_depth == depth) &&
1277 (strcmp(rec->_klass_name, klass_name) == 0) &&
1278 (strcmp(rec->_method_name, method_name) == 0) &&
1279 (strcmp(rec->_signature, signature) == 0)) {
1280 return rec;
1281 }
1282 }
1283 }
1284 return nullptr;
1285 }
1286
1287 const char* error_message() {
1288 return _error_message;
1289 }
1290
1291 void reset() {
1292 _error_message = nullptr;
1293 _ci_method_records.clear();
1294 _ci_method_data_records.clear();
1295 }
1296
1297 // Take an ascii string contain \u#### escapes and convert it to utf8
1298 // in place.
1299 static void unescape_string(char* value) {
1300 char* from = value;
1301 char* to = value;
1302 while (*from != '\0') {
1303 if (*from != '\\') {
1304 *from++ = *to++;
1305 } else {
1306 switch (from[1]) {
1307 case 'u': {
1308 from += 2;
1309 jchar value=0;
1310 for (int i=0; i<4; i++) {
1311 char c = *from++;
1312 switch (c) {
1313 case '0': case '1': case '2': case '3': case '4':
1314 case '5': case '6': case '7': case '8': case '9':
1315 value = (value << 4) + c - '0';
1316 break;
1317 case 'a': case 'b': case 'c':
1318 case 'd': case 'e': case 'f':
1319 value = (value << 4) + 10 + c - 'a';
1320 break;
1321 case 'A': case 'B': case 'C':
1322 case 'D': case 'E': case 'F':
1323 value = (value << 4) + 10 + c - 'A';
1324 break;
1325 default:
1326 ShouldNotReachHere();
1327 }
1328 }
1329 UNICODE::convert_to_utf8(&value, 1, to);
1330 to++;
1331 break;
1332 }
1333 case 't': *to++ = '\t'; from += 2; break;
1334 case 'n': *to++ = '\n'; from += 2; break;
1335 case 'r': *to++ = '\r'; from += 2; break;
1336 case 'f': *to++ = '\f'; from += 2; break;
1337 default:
1338 ShouldNotReachHere();
1339 }
1340 }
1341 }
1342 *from = *to;
1343 }
1344 };
1345
1346 void ciReplay::replay(TRAPS) {
1347 int exit_code = replay_impl(THREAD);
1348
1349 Threads::destroy_vm();
1350
1351 vm_exit(exit_code);
1352 }
1353
1354 bool ciReplay::no_replay_state() {
1355 return replay_state == nullptr;
1356 }
1357
1358 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1359 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1360 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1361 return nullptr;
1362 }
1363
1364 VM_ENTRY_MARK;
1365 // Load and parse the replay data
1366 CompileReplay rp(InlineDataFile, THREAD);
1367 if (!rp.can_replay()) {
1368 tty->print_cr("ciReplay: !rp.can_replay()");
1369 return nullptr;
1370 }
1371 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1372 if (HAS_PENDING_EXCEPTION) {
1373 Handle throwable(THREAD, PENDING_EXCEPTION);
1374 CLEAR_PENDING_EXCEPTION;
1375 java_lang_Throwable::print_stack_trace(throwable, tty);
1376 tty->cr();
1377 return nullptr;
1378 }
1379
1380 if (rp.had_error()) {
1381 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1382 return nullptr;
1383 }
1384 return data;
1385 }
1386
1387 int ciReplay::replay_impl(TRAPS) {
1388 HandleMark hm(THREAD);
1389 ResourceMark rm(THREAD);
1390
1391 if (ReplaySuppressInitializers > 2) {
1392 // ReplaySuppressInitializers > 2 means that we want to allow
1393 // normal VM bootstrap but once we get into the replay itself
1394 // don't allow any initializers to be run.
1395 ReplaySuppressInitializers = 1;
1396 }
1397
1398 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1399 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1400 return 1;
1401 }
1402
1403 // Load and parse the replay data
1404 CompileReplay rp(ReplayDataFile, THREAD);
1405 int exit_code = 0;
1406 if (rp.can_replay()) {
1407 rp.process(THREAD);
1408 } else {
1409 exit_code = 1;
1410 return exit_code;
1411 }
1412
1413 if (HAS_PENDING_EXCEPTION) {
1414 Handle throwable(THREAD, PENDING_EXCEPTION);
1415 CLEAR_PENDING_EXCEPTION;
1416 java_lang_Throwable::print_stack_trace(throwable, tty);
1417 tty->cr();
1418 exit_code = 2;
1419 }
1420
1421 if (rp.had_error()) {
1422 tty->print_cr("Failed on %s", rp.error_message());
1423 exit_code = 1;
1424 }
1425 return exit_code;
1426 }
1427
1428 void ciReplay::initialize(ciMethodData* m) {
1429 if (no_replay_state()) {
1430 return;
1431 }
1432
1433 ASSERT_IN_VM;
1434 ResourceMark rm;
1435
1436 Method* method = m->get_MethodData()->method();
1437 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1438 if (rec == nullptr) {
1439 // This indicates some mismatch with the original environment and
1440 // the replay environment though it's not always enough to
1441 // interfere with reproducing a bug
1442 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1443 method->print_name(tty);
1444 tty->cr();
1445 } else {
1446 m->_state = rec->_state;
1447 m->_invocation_counter = rec->_invocation_counter;
1448 if (rec->_data_length != 0) {
1449 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1450 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1451
1452 // Write the correct ciObjects back into the profile data
1453 ciEnv* env = ciEnv::current();
1454 for (int i = 0; i < rec->_classes_length; i++) {
1455 Klass *k = rec->_classes[i];
1456 // In case this class pointer is is tagged, preserve the tag bits
1457 intptr_t status = 0;
1458 if (k != nullptr) {
1459 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1460 }
1461 rec->_data[rec->_classes_offsets[i]] = status;
1462 }
1463 for (int i = 0; i < rec->_methods_length; i++) {
1464 Method *m = rec->_methods[i];
1465 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1466 env->get_metadata(m);
1467 }
1468 // Copy the updated profile data into place as intptr_ts
1469 #ifdef _LP64
1470 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1471 #else
1472 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1473 #endif
1474 }
1475
1476 // copy in the original header
1477 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1478 }
1479 }
1480
1481
1482 bool ciReplay::should_not_inline(ciMethod* method) {
1483 if (no_replay_state()) {
1484 return false;
1485 }
1486 VM_ENTRY_MARK;
1487 // ciMethod without a record shouldn't be inlined.
1488 return replay_state->find_ciMethodRecord(method->get_Method()) == nullptr;
1489 }
1490
1491 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1492 if (data != nullptr) {
1493 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1494 VM_ENTRY_MARK;
1495 // Inline record are ordered by bci and depth.
1496 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1497 if (record == nullptr) {
1498 return false;
1499 }
1500 should_delay = record->_inline_late;
1501 return true;
1502 } else if (replay_state != nullptr) {
1503 VM_ENTRY_MARK;
1504 // Inline record are ordered by bci and depth.
1505 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1506 if (record == nullptr) {
1507 return false;
1508 }
1509 should_delay = record->_inline_late;
1510 return true;
1511 }
1512 return false;
1513 }
1514
1515 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1516 if (data != nullptr) {
1517 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1518 VM_ENTRY_MARK;
1519 // Inline record are ordered by bci and depth.
1520 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == nullptr;
1521 } else if (replay_state != nullptr) {
1522 VM_ENTRY_MARK;
1523 // Inline record are ordered by bci and depth.
1524 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == nullptr;
1525 }
1526 return false;
1527 }
1528
1529 void ciReplay::initialize(ciMethod* m) {
1530 if (no_replay_state()) {
1531 return;
1532 }
1533
1534 ASSERT_IN_VM;
1535 ResourceMark rm;
1536
1537 Method* method = m->get_Method();
1538 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1539 if (rec == nullptr) {
1540 // This indicates some mismatch with the original environment and
1541 // the replay environment though it's not always enough to
1542 // interfere with reproducing a bug
1543 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1544 method->print_name(tty);
1545 tty->cr();
1546 } else {
1547 EXCEPTION_CONTEXT;
1548 // m->_instructions_size = rec->_instructions_size;
1549 m->_inline_instructions_size = -1;
1550 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1551 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1552 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1553 guarantee(mcs != nullptr, "method counters allocation failed");
1554 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1555 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1556 }
1557 }
1558
1559 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1560 assert(!no_replay_state(), "must have replay state");
1561
1562 ASSERT_IN_VM;
1563 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1564 assert(rec != nullptr, "ciInstanceKlass must be whitelisted");
1565 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1566 }
1567
1568 bool ciReplay::is_loaded(Method* method) {
1569 if (no_replay_state()) {
1570 return true;
1571 }
1572
1573 ASSERT_IN_VM;
1574 ResourceMark rm;
1575
1576 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1577 return rec != nullptr;
1578 }
1579
1580 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1581 if (no_replay_state()) {
1582 return false;
1583 }
1584
1585 // Check if klass is found on whitelist.
1586 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1587 return rec == nullptr;
1588 }
1589
1590 oop ciReplay::obj_field(oop obj, Symbol* name) {
1591 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1592
1593 do {
1594 if (!ik->has_nonstatic_fields()) {
1595 ik = ik->java_super();
1596 continue;
1597 }
1598
1599 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1600 if (fs.access_flags().is_static()) {
1601 continue;
1602 }
1603 if (fs.name() == name) {
1604 int offset = fs.offset();
1605 #ifdef ASSERT
1606 fieldDescriptor fd = fs.field_descriptor();
1607 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1608 #endif
1609 oop f = obj->obj_field(offset);
1610 return f;
1611 }
1612 }
1613
1614 ik = ik->java_super();
1615 } while (ik != nullptr);
1616 return nullptr;
1617 }
1618
1619 oop ciReplay::obj_field(oop obj, const char *name) {
1620 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1621 if (fname == nullptr) {
1622 return nullptr;
1623 }
1624 return obj_field(obj, fname);
1625 }