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 _loader;
118 int _version;
119
120 GrowableArray<ciMethodRecord*> _ci_method_records;
121 GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
122 GrowableArray<ciInstanceKlassRecord*> _ci_instance_klass_records;
123
124 // Use pointer because we may need to return inline records
125 // without destroying them.
126 GrowableArray<ciInlineRecord*>* _ci_inline_records;
127
128 const char* _error_message;
129
130 char* _bufptr;
131 char* _buffer;
132 int _buffer_length;
133 ReallocMark _nesting; // Safety checks for arena reallocation
134
135 // "compile" data
136 ciKlass* _iklass;
137 Method* _imethod;
138 int _entry_bci;
139 int _comp_level;
140
141 public:
142 CompileReplay(const char* filename, TRAPS) {
143 _thread = THREAD;
144 _loader = Handle(_thread, SystemDictionary::java_system_loader());
145
146 _stream = os::fopen(filename, "rt");
147 if (_stream == nullptr) {
148 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
149 }
150
151 _ci_inline_records = nullptr;
152 _error_message = nullptr;
153
154 _buffer_length = 32;
155 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
156 _bufptr = _buffer;
157
158 _imethod = nullptr;
159 _iklass = nullptr;
160 _entry_bci = 0;
161 _comp_level = 0;
162 _version = 0;
163
164 test();
165 }
166
167 ~CompileReplay() {
168 if (_stream != nullptr) fclose(_stream);
169 }
170
171 void test() {
172 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
173 _bufptr = _buffer;
174 assert(parse_int("test") == 1, "what");
175 assert(parse_int("test") == 2, "what");
176 assert(strcmp(parse_string(), "foo") == 0, "what");
177 assert(parse_int("test") == 4, "what");
178 assert(strcmp(parse_string(), "bar") == 0, "what");
179 assert(parse_intptr_t("test") == 9, "what");
180 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
181 }
182
183 bool had_error() {
184 return _error_message != nullptr || _thread->has_pending_exception();
185 }
186
187 bool can_replay() {
188 return !(_stream == nullptr || had_error());
189 }
190
191 void report_error(const char* msg) {
192 _error_message = msg;
193 }
194
195 int parse_int(const char* label) {
196 if (had_error()) {
197 return 0;
198 }
199
200 int v = 0;
201 int read;
202 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
203 report_error(label);
204 } else {
205 _bufptr += read;
206 }
207 return v;
208 }
209
210 intptr_t parse_intptr_t(const char* label) {
211 if (had_error()) {
212 return 0;
213 }
214
215 intptr_t v = 0;
216 int read;
217 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
218 report_error(label);
219 } else {
220 _bufptr += read;
221 }
222 return v;
223 }
224
225 void skip_ws() {
226 // Skip any leading whitespace
227 while (*_bufptr == ' ' || *_bufptr == '\t') {
228 _bufptr++;
229 }
230 }
231
232 // Ignore the rest of the line
233 void skip_remaining() {
234 _bufptr = &_bufptr[strlen(_bufptr)]; // skip ahead to terminator
235 }
236
237 char* scan_and_terminate(char delim) {
238 char* str = _bufptr;
239 while (*_bufptr != delim && *_bufptr != '\0') {
240 _bufptr++;
241 }
242 if (*_bufptr != '\0') {
243 *_bufptr++ = '\0';
244 }
245 if (_bufptr == str) {
246 // nothing here
247 return nullptr;
248 }
249 return str;
250 }
251
252 char* parse_string() {
253 if (had_error()) return nullptr;
254
255 skip_ws();
256 return scan_and_terminate(' ');
257 }
258
259 char* parse_quoted_string() {
260 if (had_error()) return nullptr;
261
262 skip_ws();
263
264 if (*_bufptr == '"') {
265 _bufptr++;
266 return scan_and_terminate('"');
267 } else {
268 return scan_and_terminate(' ');
269 }
270 }
271
272 char* parse_escaped_string() {
273 char* result = parse_quoted_string();
274 if (result != nullptr) {
275 unescape_string(result);
276 }
277 return result;
278 }
279
280 // Look for the tag 'tag' followed by an
281 bool parse_tag_and_count(const char* tag, int& length) {
282 const char* t = parse_string();
283 if (t == nullptr) {
284 return false;
285 }
286
287 if (strcmp(tag, t) != 0) {
288 report_error(tag);
289 return false;
290 }
291 length = parse_int("parse_tag_and_count");
292 return !had_error();
293 }
294
295 // Parse a sequence of raw data encoded as bytes and return the
296 // resulting data.
297 char* parse_data(const char* tag, int& length) {
298 int read_size = 0;
299 if (!parse_tag_and_count(tag, read_size)) {
300 return nullptr;
301 }
302
303 int actual_size = sizeof(MethodData::CompilerCounters);
304 char *result = NEW_RESOURCE_ARRAY(char, actual_size);
305 int i = 0;
306 if (read_size != actual_size) {
307 tty->print_cr("Warning: ciMethodData parsing sees MethodData size %i in file, current is %i", read_size,
308 actual_size);
309 // Replay serializes the entire MethodData, but the data is at the end.
310 // If the MethodData instance size has changed, we can pad or truncate in the beginning
311 int padding = actual_size - read_size;
312 if (padding > 0) {
313 // pad missing data with zeros
314 tty->print_cr("- Padding MethodData");
315 for (; i < padding; i++) {
316 result[i] = 0;
317 }
318 } else if (padding < 0) {
319 // drop some data
320 tty->print_cr("- Truncating MethodData");
321 for (int j = 0; j < -padding; j++) {
322 int val = parse_int("data");
323 // discard val
324 }
325 }
326 }
327
328 assert(i < actual_size, "At least some data must remain to be copied");
329 for (; i < actual_size; i++) {
330 int val = parse_int("data");
331 result[i] = val;
332 }
333 length = actual_size;
334 return result;
335 }
336
337 // Parse a standard chunk of data emitted as:
338 // 'tag' <length> # # ...
339 // Where each # is an intptr_t item
340 intptr_t* parse_intptr_data(const char* tag, int& length) {
341 if (!parse_tag_and_count(tag, length)) {
342 return nullptr;
343 }
344
345 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
346 for (int i = 0; i < length; i++) {
347 skip_ws();
348 intptr_t val = parse_intptr_t("data");
349 result[i] = val;
350 }
351 return result;
352 }
353
354 // Parse a possibly quoted version of a symbol into a symbolOop
355 Symbol* parse_symbol() {
356 const char* str = parse_escaped_string();
357 if (str != nullptr) {
358 Symbol* sym = SymbolTable::new_symbol(str);
359 return sym;
360 }
361 return nullptr;
362 }
363
364 bool parse_terminator() {
365 char* terminator = parse_string();
366 if (terminator != nullptr && strcmp(terminator, ";") == 0) {
367 return true;
368 }
369 return false;
370 }
371
372 // Parse a special hidden klass location syntax
373 // syntax: @bci <klass> <name> <signature> <bci> <location>* ;
374 // syntax: @cpi <klass> <cpi> <location>* ;
375 Klass* parse_cp_ref(TRAPS) {
376 JavaThread* thread = THREAD;
377 oop obj = nullptr;
378 char* ref = parse_string();
379 if (strcmp(ref, "bci") == 0) {
380 Method* m = parse_method(CHECK_NULL);
381 if (m == nullptr) {
382 return nullptr;
383 }
384
385 InstanceKlass* ik = m->method_holder();
386 const constantPoolHandle cp(Thread::current(), ik->constants());
387
388 // invokedynamic or invokehandle
389
390 methodHandle caller(Thread::current(), m);
391 int bci = parse_int("bci");
392 if (m->validate_bci(bci) != bci) {
393 report_error("bad bci");
394 return nullptr;
395 }
396
397 ik->link_class(CHECK_NULL);
398
399 Bytecode_invoke bytecode = Bytecode_invoke_check(caller, bci);
400 if (!Bytecodes::is_defined(bytecode.code()) || !bytecode.is_valid()) {
401 report_error("no invoke found at bci");
402 return nullptr;
403 }
404 bytecode.verify();
405 int index = bytecode.index();
406
407 CallInfo callInfo;
408 Bytecodes::Code bc = bytecode.invoke_code();
409 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
410
411 oop appendix = nullptr;
412 Method* adapter_method = nullptr;
413 int pool_index = 0;
414
415 if (bytecode.is_invokedynamic()) {
416 cp->cache()->set_dynamic_call(callInfo, index);
417
418 appendix = cp->resolved_reference_from_indy(index);
419 adapter_method = cp->resolved_indy_entry_at(index)->method();
420 pool_index = cp->resolved_indy_entry_at(index)->constant_pool_index();
421 } else if (bytecode.is_invokehandle()) {
422 #ifdef ASSERT
423 Klass* holder = cp->klass_ref_at(index, bytecode.code(), CHECK_NULL);
424 Symbol* name = cp->name_ref_at(index, bytecode.code());
425 assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
426 #endif
427 ResolvedMethodEntry* method_entry = cp->cache()->set_method_handle(index, callInfo);
428 appendix = cp->cache()->appendix_if_resolved(method_entry);
429 adapter_method = method_entry->method();
430 pool_index = method_entry->constant_pool_index();
431 } else {
432 report_error("no dynamic invoke found");
433 return nullptr;
434 }
435 char* dyno_ref = parse_string();
436 if (strcmp(dyno_ref, "<appendix>") == 0) {
437 obj = appendix;
438 } else if (strcmp(dyno_ref, "<adapter>") == 0) {
439 if (!parse_terminator()) {
440 report_error("no dynamic invoke found");
441 return nullptr;
442 }
443 Method* adapter = adapter_method;
444 if (adapter == nullptr) {
445 report_error("no adapter found");
446 return nullptr;
447 }
448 return adapter->method_holder();
449 } else if (strcmp(dyno_ref, "<bsm>") == 0) {
450 BootstrapInfo bootstrap_specifier(cp, pool_index, index);
451 obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL);
452 } else {
453 report_error("unrecognized token");
454 return nullptr;
455 }
456 } else {
457 // constant pool ref (MethodHandle)
458 if (strcmp(ref, "cpi") != 0) {
459 report_error("unexpected token");
460 return nullptr;
461 }
462
463 Klass* k = parse_klass(CHECK_NULL);
464 if (k == nullptr) {
465 return nullptr;
466 }
467 InstanceKlass* ik = InstanceKlass::cast(k);
468 const constantPoolHandle cp(Thread::current(), ik->constants());
469
470 int cpi = parse_int("cpi");
471
472 if (cpi >= cp->length()) {
473 report_error("bad cpi");
474 return nullptr;
475 }
476 if (!cp->tag_at(cpi).is_method_handle()) {
477 report_error("no method handle found at cpi");
478 return nullptr;
479 }
480 ik->link_class(CHECK_NULL);
481 obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL);
482 }
483 if (obj == nullptr) {
484 report_error("null cp object found");
485 return nullptr;
486 }
487 Klass* k = nullptr;
488 skip_ws();
489 // loop: read fields
490 char* field = nullptr;
491 do {
492 field = parse_string();
493 if (field == nullptr) {
494 report_error("no field found");
495 return nullptr;
496 }
497 if (strcmp(field, ";") == 0) {
498 break;
499 }
500 // raw Method*
501 if (strcmp(field, "<vmtarget>") == 0) {
502 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
503 k = (vmtarget == nullptr) ? nullptr : vmtarget->method_holder();
504 if (k == nullptr) {
505 report_error("null vmtarget found");
506 return nullptr;
507 }
508 if (!parse_terminator()) {
509 report_error("missing terminator");
510 return nullptr;
511 }
512 return k;
513 }
514 obj = ciReplay::obj_field(obj, field);
515 // array
516 if (obj != nullptr && obj->is_objArray()) {
517 objArrayOop arr = (objArrayOop)obj;
518 int index = parse_int("index");
519 if (index >= arr->length()) {
520 report_error("bad array index");
521 return nullptr;
522 }
523 obj = arr->obj_at(index);
524 }
525 } while (obj != nullptr);
526 if (obj == nullptr) {
527 report_error("null field found");
528 return nullptr;
529 }
530 k = obj->klass();
531 return k;
532 }
533
534 // Parse a valid klass name and look it up
535 // syntax: <name>
536 // syntax: <constant pool ref>
537 Klass* parse_klass(TRAPS) {
538 skip_ws();
539 // check for constant pool object reference (for a dynamic/hidden class)
540 bool cp_ref = (*_bufptr == '@');
541 if (cp_ref) {
542 ++_bufptr;
543 Klass* k = parse_cp_ref(CHECK_NULL);
544 if (k != nullptr && !k->is_hidden()) {
545 report_error("expected hidden class");
546 return nullptr;
547 }
548 return k;
549 }
550 char* str = parse_escaped_string();
551 Symbol* klass_name = SymbolTable::new_symbol(str);
552 if (klass_name != nullptr) {
553 Klass* k = nullptr;
554 if (_iklass != nullptr) {
555 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
556 } else {
557 k = SystemDictionary::resolve_or_fail(klass_name, _loader, true, THREAD);
558 }
559 if (HAS_PENDING_EXCEPTION) {
560 oop throwable = PENDING_EXCEPTION;
561 java_lang_Throwable::print(throwable, tty);
562 tty->cr();
563 report_error(str);
564 if (ReplayIgnoreInitErrors) {
565 CLEAR_PENDING_EXCEPTION;
566 _error_message = nullptr;
567 }
568 return nullptr;
569 }
570 return k;
571 }
572 return nullptr;
573 }
574
575 // Lookup a klass
576 Klass* resolve_klass(const char* klass, TRAPS) {
577 Symbol* klass_name = SymbolTable::new_symbol(klass);
578 return SystemDictionary::resolve_or_fail(klass_name, _loader, true, THREAD);
579 }
580
581 // Parse the standard tuple of <klass> <name> <signature>
582 Method* parse_method(TRAPS) {
583 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
584 if (k == nullptr) {
585 report_error("Can't find holder klass");
586 return nullptr;
587 }
588 Symbol* method_name = parse_symbol();
589 Symbol* method_signature = parse_symbol();
590 Method* m = k->find_method(method_name, method_signature);
591 if (m == nullptr) {
592 report_error("Can't find method");
593 }
594 return m;
595 }
596
597 int get_line(int c) {
598 int buffer_pos = 0;
599 while(c != EOF) {
600 if (buffer_pos + 1 >= _buffer_length) {
601 _nesting.check(); // Check if a reallocation in the resource arena is safe
602 int new_length = _buffer_length * 2;
603 // Next call will throw error in case of OOM.
604 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
605 _buffer_length = new_length;
606 }
607 if (c == '\n') {
608 c = getc(_stream); // get next char
609 break;
610 } else if (c == '\r') {
611 // skip LF
612 } else {
613 _buffer[buffer_pos++] = c;
614 }
615 c = getc(_stream);
616 }
617 // null terminate it, reset the pointer
618 _buffer[buffer_pos] = '\0'; // NL or EOF
619 _bufptr = _buffer;
620 return c;
621 }
622
623 // Process each line of the replay file executing each command until
624 // the file ends.
625 void process(TRAPS) {
626 int line_no = 1;
627 int c = getc(_stream);
628 while(c != EOF) {
629 c = get_line(c);
630 process_command(false, THREAD);
631 if (had_error()) {
632 int pos = _bufptr - _buffer + 1;
633 tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
634 if (ReplayIgnoreInitErrors) {
635 CLEAR_PENDING_EXCEPTION;
636 _error_message = nullptr;
637 } else {
638 return;
639 }
640 }
641 line_no++;
642 }
643 reset();
644 }
645
646 void process_command(bool is_replay_inline, TRAPS) {
647 char* cmd = parse_string();
648 if (cmd == nullptr) {
649 return;
650 }
651 if (strcmp("#", cmd) == 0) {
652 // comment line, print or ignore
653 if (Verbose) {
654 tty->print_cr("# %s", _bufptr);
655 }
656 skip_remaining();
657 } else if (strcmp("version", cmd) == 0) {
658 _version = parse_int("version");
659 if (_version < 0 || _version > REPLAY_VERSION) {
660 tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
661 }
662 } else if (strcmp("compile", cmd) == 0) {
663 process_compile(CHECK);
664 } else if (!is_replay_inline) {
665 if (strcmp("ciMethod", cmd) == 0) {
666 process_ciMethod(CHECK);
667 } else if (strcmp("ciMethodData", cmd) == 0) {
668 process_ciMethodData(CHECK);
669 } else if (strcmp("staticfield", cmd) == 0) {
670 process_staticfield(CHECK);
671 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
672 process_ciInstanceKlass(CHECK);
673 } else if (strcmp("instanceKlass", cmd) == 0) {
674 process_instanceKlass(CHECK);
675 #if INCLUDE_JVMTI
676 } else if (strcmp("JvmtiExport", cmd) == 0) {
677 process_JvmtiExport(CHECK);
678 #endif // INCLUDE_JVMTI
679 } else {
680 report_error("unknown command");
681 }
682 } else {
683 report_error("unknown command");
684 }
685 if (!had_error() && *_bufptr != '\0') {
686 report_error("line not properly terminated");
687 }
688 }
689
690 // validation of comp_level
691 bool is_valid_comp_level(int comp_level) {
692 const int msg_len = 256;
693 char* msg = nullptr;
694 if (!is_compile(comp_level)) {
695 msg = NEW_RESOURCE_ARRAY(char, msg_len);
696 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
697 } else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
698 msg = NEW_RESOURCE_ARRAY(char, msg_len);
699 jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
700 } else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
701 msg = NEW_RESOURCE_ARRAY(char, msg_len);
702 jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
703 }
704 if (msg != nullptr) {
705 report_error(msg);
706 return false;
707 }
708 return true;
709 }
710
711 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
712 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
713 _imethod = m;
714 _iklass = imethod->holder();
715 _entry_bci = entry_bci;
716 _comp_level = comp_level;
717 int line_no = 1;
718 int c = getc(_stream);
719 while(c != EOF) {
720 c = get_line(c);
721 process_command(true, CHECK_NULL);
722 if (had_error()) {
723 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
724 tty->print_cr("%s", _buffer);
725 return nullptr;
726 }
727 if (_ci_inline_records != nullptr && _ci_inline_records->length() > 0) {
728 // Found inlining record for the requested method.
729 return _ci_inline_records;
730 }
731 line_no++;
732 }
733 return nullptr;
734 }
735
736 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
737 void process_compile(TRAPS) {
738 Method* method = parse_method(CHECK);
739 if (had_error()) return;
740 int entry_bci = parse_int("entry_bci");
741 int comp_level = parse_int("comp_level");
742 if (!is_valid_comp_level(comp_level)) {
743 return;
744 }
745 if (_imethod != nullptr) {
746 // Replay Inlining
747 if (entry_bci != _entry_bci || comp_level != _comp_level) {
748 return;
749 }
750 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
751 const char* imethod_name = _imethod->name()->as_utf8();
752 const char* isignature = _imethod->signature()->as_utf8();
753 const char* klass_name = method->method_holder()->name()->as_utf8();
754 const char* method_name = method->name()->as_utf8();
755 const char* signature = method->signature()->as_utf8();
756 if (strcmp(iklass_name, klass_name) != 0 ||
757 strcmp(imethod_name, method_name) != 0 ||
758 strcmp(isignature, signature) != 0) {
759 return;
760 }
761 }
762 int inline_count = 0;
763 if (parse_tag_and_count("inline", inline_count)) {
764 // Record inlining data
765 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
766 for (int i = 0; i < inline_count; i++) {
767 int depth = parse_int("inline_depth");
768 int bci = parse_int("inline_bci");
769 if (had_error()) {
770 break;
771 }
772 int inline_late = 0;
773 if (_version >= 2) {
774 inline_late = parse_int("inline_late");
775 if (had_error()) {
776 break;
777 }
778 }
779
780 Method* inl_method = parse_method(CHECK);
781 if (had_error()) {
782 break;
783 }
784 new_ciInlineRecord(inl_method, bci, depth, inline_late);
785 }
786 }
787 if (_imethod != nullptr) {
788 return; // Replay Inlining
789 }
790 InstanceKlass* ik = method->method_holder();
791 ik->initialize(THREAD);
792 if (HAS_PENDING_EXCEPTION) {
793 oop throwable = PENDING_EXCEPTION;
794 java_lang_Throwable::print(throwable, tty);
795 tty->cr();
796 if (ReplayIgnoreInitErrors) {
797 CLEAR_PENDING_EXCEPTION;
798 ik->set_init_state(InstanceKlass::fully_initialized);
799 } else {
800 return;
801 }
802 }
803 // Make sure the existence of a prior compile doesn't stop this one
804 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
805 if (nm != nullptr) {
806 nm->make_not_entrant();
807 }
808 replay_state = this;
809 CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
810 methodHandle(), 0, true, CompileTask::Reason_Replay, THREAD);
811 replay_state = nullptr;
812 }
813
814 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
815 void process_ciMethod(TRAPS) {
816 Method* method = parse_method(CHECK);
817 if (had_error()) return;
818 ciMethodRecord* rec = new_ciMethod(method);
819 rec->_invocation_counter = parse_int("invocation_counter");
820 rec->_backedge_counter = parse_int("backedge_counter");
821 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
822 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
823 rec->_instructions_size = parse_int("instructions_size");
824 }
825
826 // ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
827 void process_ciMethodData(TRAPS) {
828 Method* method = parse_method(CHECK);
829 if (had_error()) return;
830 /* just copied from Method, to build interpret data*/
831
832 // To be properly initialized, some profiling in the MDO needs the
833 // method to be rewritten (number of arguments at a call for instance)
834 method->method_holder()->link_class(CHECK);
835 assert(method->method_data() == nullptr, "Should only be initialized once");
836 method->build_profiling_method_data(methodHandle(THREAD, method), CHECK);
837
838 // collect and record all the needed information for later
839 ciMethodDataRecord* rec = new_ciMethodData(method);
840 rec->_state = parse_int("state");
841 if (_version < 1) {
842 parse_int("current_mileage");
843 } else {
844 rec->_invocation_counter = parse_int("invocation_counter");
845 }
846
847 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
848 if (rec->_orig_data == nullptr) {
849 return;
850 }
851 rec->_data = parse_intptr_data("data", rec->_data_length);
852 if (rec->_data == nullptr) {
853 return;
854 }
855 if (!parse_tag_and_count("oops", rec->_classes_length)) {
856 return;
857 }
858 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
859 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
860 for (int i = 0; i < rec->_classes_length; i++) {
861 int offset = parse_int("offset");
862 if (had_error()) {
863 return;
864 }
865 Klass* k = parse_klass(CHECK);
866 rec->_classes_offsets[i] = offset;
867 rec->_classes[i] = k;
868 }
869
870 if (!parse_tag_and_count("methods", rec->_methods_length)) {
871 return;
872 }
873 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
874 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
875 for (int i = 0; i < rec->_methods_length; i++) {
876 int offset = parse_int("offset");
877 if (had_error()) {
878 return;
879 }
880 Method* m = parse_method(CHECK);
881 rec->_methods_offsets[i] = offset;
882 rec->_methods[i] = m;
883 }
884 }
885
886 // instanceKlass <name>
887 // instanceKlass <constant pool ref> # <original hidden class name>
888 //
889 // Loads and initializes the klass 'name'. This can be used to
890 // create particular class loading environments
891 void process_instanceKlass(TRAPS) {
892 // just load the referenced class
893 Klass* k = parse_klass(CHECK);
894
895 if (k == nullptr) {
896 return;
897 }
898 const char* comment = parse_string();
899 bool is_comment = comment != nullptr && strcmp(comment, "#") == 0;
900 if (k->is_hidden() != is_comment) {
901 report_error("hidden class with comment expected");
902 return;
903 }
904 // comment, print or ignore
905 if (is_comment) {
906 if (Verbose) {
907 const char* hidden = parse_string();
908 tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
909 }
910 skip_remaining();
911 }
912 }
913
914 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
915 //
916 // Load the klass 'name' and link or initialize it. Verify that the
917 // constant pool is the same length as 'length' and make sure the
918 // constant pool tags are in the same state.
919 void process_ciInstanceKlass(TRAPS) {
920 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
921 if (k == nullptr) {
922 skip_remaining();
923 return;
924 }
925 int is_linked = parse_int("is_linked");
926 int is_initialized = parse_int("is_initialized");
927 int length = parse_int("length");
928 if (is_initialized) {
929 k->initialize(THREAD);
930 if (HAS_PENDING_EXCEPTION) {
931 oop throwable = PENDING_EXCEPTION;
932 java_lang_Throwable::print(throwable, tty);
933 tty->cr();
934 if (ReplayIgnoreInitErrors) {
935 CLEAR_PENDING_EXCEPTION;
936 k->set_init_state(InstanceKlass::fully_initialized);
937 } else {
938 return;
939 }
940 }
941 } else if (is_linked) {
942 k->link_class(CHECK);
943 }
944 new_ciInstanceKlass(k);
945 ConstantPool* cp = k->constants();
946 if (length != cp->length()) {
947 report_error("constant pool length mismatch: wrong class files?");
948 return;
949 }
950
951 int parsed_two_word = 0;
952 for (int i = 1; i < length; i++) {
953 int tag = parse_int("tag");
954 if (had_error()) {
955 return;
956 }
957 switch (cp->tag_at(i).value()) {
958 case JVM_CONSTANT_UnresolvedClass: {
959 if (tag == JVM_CONSTANT_Class) {
960 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
961 Klass* k = cp->klass_at(i, CHECK);
962 }
963 break;
964 }
965 case JVM_CONSTANT_Long:
966 case JVM_CONSTANT_Double:
967 parsed_two_word = i + 1;
968
969 case JVM_CONSTANT_ClassIndex:
970 case JVM_CONSTANT_StringIndex:
971 case JVM_CONSTANT_String:
972 case JVM_CONSTANT_UnresolvedClassInError:
973 case JVM_CONSTANT_Fieldref:
974 case JVM_CONSTANT_Methodref:
975 case JVM_CONSTANT_InterfaceMethodref:
976 case JVM_CONSTANT_NameAndType:
977 case JVM_CONSTANT_Utf8:
978 case JVM_CONSTANT_Integer:
979 case JVM_CONSTANT_Float:
980 case JVM_CONSTANT_MethodHandle:
981 case JVM_CONSTANT_MethodType:
982 case JVM_CONSTANT_Dynamic:
983 case JVM_CONSTANT_InvokeDynamic:
984 if (tag != cp->tag_at(i).value()) {
985 report_error("tag mismatch: wrong class files?");
986 return;
987 }
988 break;
989
990 case JVM_CONSTANT_Class:
991 if (tag == JVM_CONSTANT_UnresolvedClass) {
992 Klass* k = cp->klass_at(i, CHECK);
993 tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
994 } else if (tag != JVM_CONSTANT_Class) {
995 report_error("Unexpected tag");
996 return;
997 }
998 break;
999
1000 case 0:
1001 if (parsed_two_word == i) continue;
1002
1003 default:
1004 fatal("Unexpected tag: %d", cp->tag_at(i).value());
1005 break;
1006 }
1007
1008 }
1009 }
1010
1011 // staticfield <klass> <name> <signature> <value>
1012 //
1013 // Initialize a class and fill in the value for a static field.
1014 // This is useful when the compile was dependent on the value of
1015 // static fields but it's impossible to properly rerun the static
1016 // initializer.
1017 void process_staticfield(TRAPS) {
1018 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
1019
1020 if (k == nullptr || ReplaySuppressInitializers == 0 ||
1021 (ReplaySuppressInitializers == 2 && k->class_loader() == nullptr)) {
1022 skip_remaining();
1023 return;
1024 }
1025
1026 assert(k->is_initialized(), "must be");
1027
1028 const char* field_name = parse_escaped_string();
1029 const char* field_signature = parse_string();
1030 fieldDescriptor fd;
1031 Symbol* name = SymbolTable::new_symbol(field_name);
1032 Symbol* sig = SymbolTable::new_symbol(field_signature);
1033 if (!k->find_local_field(name, sig, &fd) ||
1034 !fd.is_static() ||
1035 fd.has_initial_value()) {
1036 report_error(field_name);
1037 return;
1038 }
1039
1040 oop java_mirror = k->java_mirror();
1041 if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
1042 int length = parse_int("array length");
1043 oop value = nullptr;
1044
1045 if (length != -1) {
1046 if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
1047 // multi dimensional array
1048 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
1049 if (kelem == nullptr) {
1050 return;
1051 }
1052 int rank = 0;
1053 while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
1054 rank++;
1055 }
1056 jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
1057 dims[0] = length;
1058 for (int i = 1; i < rank; i++) {
1059 dims[i] = 1; // These aren't relevant to the compiler
1060 }
1061 value = kelem->multi_allocate(rank, dims, CHECK);
1062 } else {
1063 if (strcmp(field_signature, "[B") == 0) {
1064 value = oopFactory::new_byteArray(length, CHECK);
1065 } else if (strcmp(field_signature, "[Z") == 0) {
1066 value = oopFactory::new_boolArray(length, CHECK);
1067 } else if (strcmp(field_signature, "[C") == 0) {
1068 value = oopFactory::new_charArray(length, CHECK);
1069 } else if (strcmp(field_signature, "[S") == 0) {
1070 value = oopFactory::new_shortArray(length, CHECK);
1071 } else if (strcmp(field_signature, "[F") == 0) {
1072 value = oopFactory::new_floatArray(length, CHECK);
1073 } else if (strcmp(field_signature, "[D") == 0) {
1074 value = oopFactory::new_doubleArray(length, CHECK);
1075 } else if (strcmp(field_signature, "[I") == 0) {
1076 value = oopFactory::new_intArray(length, CHECK);
1077 } else if (strcmp(field_signature, "[J") == 0) {
1078 value = oopFactory::new_longArray(length, CHECK);
1079 } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
1080 field_signature[1] == JVM_SIGNATURE_CLASS) {
1081 Klass* actual_array_klass = parse_klass(CHECK);
1082 Klass* kelem = ObjArrayKlass::cast(actual_array_klass)->element_klass();
1083 value = oopFactory::new_objArray(kelem, length, CHECK);
1084 } else {
1085 report_error("unhandled array staticfield");
1086 }
1087 }
1088 }
1089 java_mirror->obj_field_put(fd.offset(), value);
1090 } else {
1091 const char* string_value = parse_escaped_string();
1092 if (strcmp(field_signature, "I") == 0) {
1093 int value = atoi(string_value);
1094 java_mirror->int_field_put(fd.offset(), value);
1095 } else if (strcmp(field_signature, "B") == 0) {
1096 int value = atoi(string_value);
1097 java_mirror->byte_field_put(fd.offset(), value);
1098 } else if (strcmp(field_signature, "C") == 0) {
1099 int value = atoi(string_value);
1100 java_mirror->char_field_put(fd.offset(), value);
1101 } else if (strcmp(field_signature, "S") == 0) {
1102 int value = atoi(string_value);
1103 java_mirror->short_field_put(fd.offset(), value);
1104 } else if (strcmp(field_signature, "Z") == 0) {
1105 int value = atoi(string_value);
1106 java_mirror->bool_field_put(fd.offset(), value);
1107 } else if (strcmp(field_signature, "J") == 0) {
1108 jlong value;
1109 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
1110 fprintf(stderr, "Error parsing long: %s\n", string_value);
1111 return;
1112 }
1113 java_mirror->long_field_put(fd.offset(), value);
1114 } else if (strcmp(field_signature, "F") == 0) {
1115 float value = atof(string_value);
1116 java_mirror->float_field_put(fd.offset(), value);
1117 } else if (strcmp(field_signature, "D") == 0) {
1118 double value = atof(string_value);
1119 java_mirror->double_field_put(fd.offset(), value);
1120 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
1121 Handle value = java_lang_String::create_from_str(string_value, CHECK);
1122 java_mirror->obj_field_put(fd.offset(), value());
1123 } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
1124 oop value = nullptr;
1125 if (string_value != nullptr) {
1126 Klass* k = resolve_klass(string_value, CHECK);
1127 value = InstanceKlass::cast(k)->allocate_instance(CHECK);
1128 }
1129 java_mirror->obj_field_put(fd.offset(), value);
1130 } else {
1131 report_error("unhandled staticfield");
1132 }
1133 }
1134 }
1135
1136 #if INCLUDE_JVMTI
1137 // JvmtiExport <field> <value>
1138 void process_JvmtiExport(TRAPS) {
1139 const char* field = parse_string();
1140 bool value = parse_int("JvmtiExport flag") != 0;
1141 if (strcmp(field, "can_access_local_variables") == 0) {
1142 JvmtiExport::set_can_access_local_variables(value);
1143 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
1144 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
1145 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
1146 JvmtiExport::set_can_post_on_exceptions(value);
1147 } else {
1148 report_error("Unrecognized JvmtiExport directive");
1149 }
1150 }
1151 #endif // INCLUDE_JVMTI
1152
1153 // Create and initialize a record for a ciMethod
1154 ciMethodRecord* new_ciMethod(Method* method) {
1155 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
1156 rec->_klass_name = method->method_holder()->name()->as_utf8();
1157 rec->_method_name = method->name()->as_utf8();
1158 rec->_signature = method->signature()->as_utf8();
1159 _ci_method_records.append(rec);
1160 return rec;
1161 }
1162
1163 // Lookup data for a ciMethod
1164 ciMethodRecord* find_ciMethodRecord(Method* method) {
1165 const char* klass_name = method->method_holder()->name()->as_utf8();
1166 const char* method_name = method->name()->as_utf8();
1167 const char* signature = method->signature()->as_utf8();
1168 for (int i = 0; i < _ci_method_records.length(); i++) {
1169 ciMethodRecord* rec = _ci_method_records.at(i);
1170 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1171 strcmp(rec->_method_name, method_name) == 0 &&
1172 strcmp(rec->_signature, signature) == 0) {
1173 return rec;
1174 }
1175 }
1176 return nullptr;
1177 }
1178
1179 // Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
1180 void new_ciInstanceKlass(const InstanceKlass* klass) {
1181 ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
1182 rec->_klass = klass;
1183 oop java_mirror = klass->java_mirror();
1184 Handle h_java_mirror(_thread, java_mirror);
1185 rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
1186 _ci_instance_klass_records.append(rec);
1187 }
1188
1189 // Check if a ciInstanceKlass was present at replay dump time for a klass.
1190 ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
1191 for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
1192 ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
1193 if (klass == rec->_klass) {
1194 // ciInstanceKlass for this klass was resolved.
1195 return rec;
1196 }
1197 }
1198 return nullptr;
1199 }
1200
1201 // Create and initialize a record for a ciMethodData
1202 ciMethodDataRecord* new_ciMethodData(Method* method) {
1203 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
1204 rec->_klass_name = method->method_holder()->name()->as_utf8();
1205 rec->_method_name = method->name()->as_utf8();
1206 rec->_signature = method->signature()->as_utf8();
1207 _ci_method_data_records.append(rec);
1208 return rec;
1209 }
1210
1211 // Lookup data for a ciMethodData
1212 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
1213 const char* klass_name = method->method_holder()->name()->as_utf8();
1214 const char* method_name = method->name()->as_utf8();
1215 const char* signature = method->signature()->as_utf8();
1216 for (int i = 0; i < _ci_method_data_records.length(); i++) {
1217 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
1218 if (strcmp(rec->_klass_name, klass_name) == 0 &&
1219 strcmp(rec->_method_name, method_name) == 0 &&
1220 strcmp(rec->_signature, signature) == 0) {
1221 return rec;
1222 }
1223 }
1224 return nullptr;
1225 }
1226
1227 // Create and initialize a record for a ciInlineRecord
1228 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
1229 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
1230 rec->_klass_name = method->method_holder()->name()->as_utf8();
1231 rec->_method_name = method->name()->as_utf8();
1232 rec->_signature = method->signature()->as_utf8();
1233 rec->_inline_bci = bci;
1234 rec->_inline_depth = depth;
1235 rec->_inline_late = inline_late;
1236 _ci_inline_records->append(rec);
1237 return rec;
1238 }
1239
1240 // Lookup inlining data for a ciMethod
1241 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
1242 if (_ci_inline_records != nullptr) {
1243 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
1244 }
1245 return nullptr;
1246 }
1247
1248 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
1249 Method* method, int bci, int depth) {
1250 if (records != nullptr) {
1251 const char* klass_name = method->method_holder()->name()->as_utf8();
1252 const char* method_name = method->name()->as_utf8();
1253 const char* signature = method->signature()->as_utf8();
1254 for (int i = 0; i < records->length(); i++) {
1255 ciInlineRecord* rec = records->at(i);
1256 if ((rec->_inline_bci == bci) &&
1257 (rec->_inline_depth == depth) &&
1258 (strcmp(rec->_klass_name, klass_name) == 0) &&
1259 (strcmp(rec->_method_name, method_name) == 0) &&
1260 (strcmp(rec->_signature, signature) == 0)) {
1261 return rec;
1262 }
1263 }
1264 }
1265 return nullptr;
1266 }
1267
1268 const char* error_message() {
1269 return _error_message;
1270 }
1271
1272 void reset() {
1273 _error_message = nullptr;
1274 _ci_method_records.clear();
1275 _ci_method_data_records.clear();
1276 }
1277
1278 // Take an ascii string contain \u#### escapes and convert it to utf8
1279 // in place.
1280 static void unescape_string(char* value) {
1281 char* from = value;
1282 char* to = value;
1283 while (*from != '\0') {
1284 if (*from != '\\') {
1285 *from++ = *to++;
1286 } else {
1287 switch (from[1]) {
1288 case 'u': {
1289 from += 2;
1290 jchar value=0;
1291 for (int i=0; i<4; i++) {
1292 char c = *from++;
1293 switch (c) {
1294 case '0': case '1': case '2': case '3': case '4':
1295 case '5': case '6': case '7': case '8': case '9':
1296 value = (value << 4) + c - '0';
1297 break;
1298 case 'a': case 'b': case 'c':
1299 case 'd': case 'e': case 'f':
1300 value = (value << 4) + 10 + c - 'a';
1301 break;
1302 case 'A': case 'B': case 'C':
1303 case 'D': case 'E': case 'F':
1304 value = (value << 4) + 10 + c - 'A';
1305 break;
1306 default:
1307 ShouldNotReachHere();
1308 }
1309 }
1310 UNICODE::convert_to_utf8(&value, 1, to);
1311 to++;
1312 break;
1313 }
1314 case 't': *to++ = '\t'; from += 2; break;
1315 case 'n': *to++ = '\n'; from += 2; break;
1316 case 'r': *to++ = '\r'; from += 2; break;
1317 case 'f': *to++ = '\f'; from += 2; break;
1318 default:
1319 ShouldNotReachHere();
1320 }
1321 }
1322 }
1323 *from = *to;
1324 }
1325 };
1326
1327 void ciReplay::replay(TRAPS) {
1328 int exit_code = replay_impl(THREAD);
1329
1330 Threads::destroy_vm();
1331
1332 vm_exit(exit_code);
1333 }
1334
1335 bool ciReplay::no_replay_state() {
1336 return replay_state == nullptr;
1337 }
1338
1339 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1340 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1341 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1342 return nullptr;
1343 }
1344
1345 VM_ENTRY_MARK;
1346 // Load and parse the replay data
1347 CompileReplay rp(InlineDataFile, THREAD);
1348 if (!rp.can_replay()) {
1349 tty->print_cr("ciReplay: !rp.can_replay()");
1350 return nullptr;
1351 }
1352 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1353 if (HAS_PENDING_EXCEPTION) {
1354 Handle throwable(THREAD, PENDING_EXCEPTION);
1355 CLEAR_PENDING_EXCEPTION;
1356 java_lang_Throwable::print_stack_trace(throwable, tty);
1357 tty->cr();
1358 return nullptr;
1359 }
1360
1361 if (rp.had_error()) {
1362 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1363 return nullptr;
1364 }
1365 return data;
1366 }
1367
1368 int ciReplay::replay_impl(TRAPS) {
1369 HandleMark hm(THREAD);
1370 ResourceMark rm(THREAD);
1371
1372 if (ReplaySuppressInitializers > 2) {
1373 // ReplaySuppressInitializers > 2 means that we want to allow
1374 // normal VM bootstrap but once we get into the replay itself
1375 // don't allow any initializers to be run.
1376 ReplaySuppressInitializers = 1;
1377 }
1378
1379 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1380 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1381 return 1;
1382 }
1383
1384 // Load and parse the replay data
1385 CompileReplay rp(ReplayDataFile, THREAD);
1386 int exit_code = 0;
1387 if (rp.can_replay()) {
1388 rp.process(THREAD);
1389 } else {
1390 exit_code = 1;
1391 return exit_code;
1392 }
1393
1394 if (HAS_PENDING_EXCEPTION) {
1395 Handle throwable(THREAD, PENDING_EXCEPTION);
1396 CLEAR_PENDING_EXCEPTION;
1397 java_lang_Throwable::print_stack_trace(throwable, tty);
1398 tty->cr();
1399 exit_code = 2;
1400 }
1401
1402 if (rp.had_error()) {
1403 tty->print_cr("Failed on %s", rp.error_message());
1404 exit_code = 1;
1405 }
1406 return exit_code;
1407 }
1408
1409 void ciReplay::initialize(ciMethodData* m) {
1410 if (no_replay_state()) {
1411 return;
1412 }
1413
1414 ASSERT_IN_VM;
1415 ResourceMark rm;
1416
1417 Method* method = m->get_MethodData()->method();
1418 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1419 if (rec == nullptr) {
1420 // This indicates some mismatch with the original environment and
1421 // the replay environment though it's not always enough to
1422 // interfere with reproducing a bug
1423 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1424 method->print_name(tty);
1425 tty->cr();
1426 } else {
1427 m->_state = rec->_state;
1428 m->_invocation_counter = rec->_invocation_counter;
1429 if (rec->_data_length != 0) {
1430 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1431 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1432
1433 // Write the correct ciObjects back into the profile data
1434 ciEnv* env = ciEnv::current();
1435 for (int i = 0; i < rec->_classes_length; i++) {
1436 Klass *k = rec->_classes[i];
1437 // In case this class pointer is is tagged, preserve the tag bits
1438 intptr_t status = 0;
1439 if (k != nullptr) {
1440 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1441 }
1442 rec->_data[rec->_classes_offsets[i]] = status;
1443 }
1444 for (int i = 0; i < rec->_methods_length; i++) {
1445 Method *m = rec->_methods[i];
1446 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1447 env->get_metadata(m);
1448 }
1449 // Copy the updated profile data into place as intptr_ts
1450 #ifdef _LP64
1451 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1452 #else
1453 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1454 #endif
1455 }
1456
1457 // copy in the original header
1458 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1459 }
1460 }
1461
1462
1463 bool ciReplay::should_not_inline(ciMethod* method) {
1464 if (no_replay_state()) {
1465 return false;
1466 }
1467 VM_ENTRY_MARK;
1468 // ciMethod without a record shouldn't be inlined.
1469 return replay_state->find_ciMethodRecord(method->get_Method()) == nullptr;
1470 }
1471
1472 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
1473 if (data != nullptr) {
1474 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1475 VM_ENTRY_MARK;
1476 // Inline record are ordered by bci and depth.
1477 ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
1478 if (record == nullptr) {
1479 return false;
1480 }
1481 should_delay = record->_inline_late;
1482 return true;
1483 } else if (replay_state != nullptr) {
1484 VM_ENTRY_MARK;
1485 // Inline record are ordered by bci and depth.
1486 ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
1487 if (record == nullptr) {
1488 return false;
1489 }
1490 should_delay = record->_inline_late;
1491 return true;
1492 }
1493 return false;
1494 }
1495
1496 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1497 if (data != nullptr) {
1498 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1499 VM_ENTRY_MARK;
1500 // Inline record are ordered by bci and depth.
1501 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == nullptr;
1502 } else if (replay_state != nullptr) {
1503 VM_ENTRY_MARK;
1504 // Inline record are ordered by bci and depth.
1505 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == nullptr;
1506 }
1507 return false;
1508 }
1509
1510 void ciReplay::initialize(ciMethod* m) {
1511 if (no_replay_state()) {
1512 return;
1513 }
1514
1515 ASSERT_IN_VM;
1516 ResourceMark rm;
1517
1518 Method* method = m->get_Method();
1519 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1520 if (rec == nullptr) {
1521 // This indicates some mismatch with the original environment and
1522 // the replay environment though it's not always enough to
1523 // interfere with reproducing a bug
1524 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1525 method->print_name(tty);
1526 tty->cr();
1527 } else {
1528 EXCEPTION_CONTEXT;
1529 // m->_instructions_size = rec->_instructions_size;
1530 m->_inline_instructions_size = -1;
1531 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1532 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1533 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1534 guarantee(mcs != nullptr, "method counters allocation failed");
1535 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1536 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1537 }
1538 }
1539
1540 void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
1541 assert(!no_replay_state(), "must have replay state");
1542
1543 ASSERT_IN_VM;
1544 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
1545 assert(rec != nullptr, "ciInstanceKlass must be whitelisted");
1546 ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
1547 }
1548
1549 bool ciReplay::is_loaded(Method* method) {
1550 if (no_replay_state()) {
1551 return true;
1552 }
1553
1554 ASSERT_IN_VM;
1555 ResourceMark rm;
1556
1557 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1558 return rec != nullptr;
1559 }
1560
1561 bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
1562 if (no_replay_state()) {
1563 return false;
1564 }
1565
1566 // Check if klass is found on whitelist.
1567 ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
1568 return rec == nullptr;
1569 }
1570
1571 oop ciReplay::obj_field(oop obj, Symbol* name) {
1572 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
1573
1574 do {
1575 if (!ik->has_nonstatic_fields()) {
1576 ik = ik->java_super();
1577 continue;
1578 }
1579
1580 for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
1581 if (fs.access_flags().is_static()) {
1582 continue;
1583 }
1584 if (fs.name() == name) {
1585 int offset = fs.offset();
1586 #ifdef ASSERT
1587 fieldDescriptor fd = fs.field_descriptor();
1588 assert(fd.offset() == ik->field_offset(fd.index()), "!");
1589 #endif
1590 oop f = obj->obj_field(offset);
1591 return f;
1592 }
1593 }
1594
1595 ik = ik->java_super();
1596 } while (ik != nullptr);
1597 return nullptr;
1598 }
1599
1600 oop ciReplay::obj_field(oop obj, const char *name) {
1601 Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
1602 if (fname == nullptr) {
1603 return nullptr;
1604 }
1605 return obj_field(obj, fname);
1606 }