1 /*
2 * Copyright (c) 2013, 2016, 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.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "memory/allocation.inline.hpp"
33 #include "memory/oopFactory.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "utilities/copy.hpp"
37 #include "utilities/macros.hpp"
38
39 #ifndef PRODUCT
40
41 // ciReplay
42
43 typedef struct _ciMethodDataRecord {
44 const char* _klass_name;
45 const char* _method_name;
46 const char* _signature;
47
48 int _state;
49 int _current_mileage;
50
51 intptr_t* _data;
52 char* _orig_data;
53 Klass** _classes;
54 Method** _methods;
55 int* _classes_offsets;
56 int* _methods_offsets;
57 int _data_length;
58 int _orig_data_length;
59 int _classes_length;
60 int _methods_length;
61 } ciMethodDataRecord;
62
63 typedef struct _ciMethodRecord {
64 const char* _klass_name;
65 const char* _method_name;
66 const char* _signature;
67
68 int _instructions_size;
69 int _interpreter_invocation_count;
70 int _interpreter_throwout_count;
71 int _invocation_counter;
72 int _backedge_counter;
73 } ciMethodRecord;
74
75 typedef struct _ciInlineRecord {
76 const char* _klass_name;
77 const char* _method_name;
78 const char* _signature;
79
80 int _inline_depth;
81 int _inline_bci;
82 } ciInlineRecord;
83
84 class CompileReplay;
85 static CompileReplay* replay_state;
86
87 class CompileReplay : public StackObj {
88 private:
89 FILE* _stream;
90 Thread* _thread;
91 Handle _protection_domain;
92 Handle _loader;
93
94 GrowableArray<ciMethodRecord*> _ci_method_records;
95 GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
96
97 // Use pointer because we may need to return inline records
98 // without destroying them.
99 GrowableArray<ciInlineRecord*>* _ci_inline_records;
100
101 const char* _error_message;
102
103 char* _bufptr;
104 char* _buffer;
105 int _buffer_length;
106 int _buffer_pos;
107
108 // "compile" data
109 ciKlass* _iklass;
110 Method* _imethod;
111 int _entry_bci;
112 int _comp_level;
113
114 public:
115 CompileReplay(const char* filename, TRAPS) {
116 _thread = THREAD;
117 _loader = Handle(_thread, SystemDictionary::java_system_loader());
118 _protection_domain = Handle();
119
120 _stream = fopen(filename, "rt");
121 if (_stream == NULL) {
122 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
123 }
124
125 _ci_inline_records = NULL;
126 _error_message = NULL;
127
128 _buffer_length = 32;
129 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
130 _bufptr = _buffer;
131 _buffer_pos = 0;
132
133 _imethod = NULL;
134 _iklass = NULL;
135 _entry_bci = 0;
136 _comp_level = 0;
137
138 test();
139 }
140
141 ~CompileReplay() {
142 if (_stream != NULL) fclose(_stream);
143 }
144
145 void test() {
146 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
147 _bufptr = _buffer;
148 assert(parse_int("test") == 1, "what");
149 assert(parse_int("test") == 2, "what");
150 assert(strcmp(parse_string(), "foo") == 0, "what");
151 assert(parse_int("test") == 4, "what");
152 assert(strcmp(parse_string(), "bar") == 0, "what");
153 assert(parse_intptr_t("test") == 9, "what");
154 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
155 }
156
157 bool had_error() {
158 return _error_message != NULL || _thread->has_pending_exception();
159 }
160
161 bool can_replay() {
162 return !(_stream == NULL || had_error());
163 }
164
165 void report_error(const char* msg) {
166 _error_message = msg;
167 // Restore the _buffer contents for error reporting
168 for (int i = 0; i < _buffer_pos; i++) {
169 if (_buffer[i] == '\0') _buffer[i] = ' ';
170 }
171 }
172
173 int parse_int(const char* label) {
174 if (had_error()) {
175 return 0;
176 }
177
178 int v = 0;
179 int read;
180 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
181 report_error(label);
182 } else {
183 _bufptr += read;
184 }
185 return v;
186 }
187
188 intptr_t parse_intptr_t(const char* label) {
189 if (had_error()) {
190 return 0;
191 }
192
193 intptr_t v = 0;
194 int read;
195 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
196 report_error(label);
197 } else {
198 _bufptr += read;
199 }
200 return v;
201 }
202
203 void skip_ws() {
204 // Skip any leading whitespace
205 while (*_bufptr == ' ' || *_bufptr == '\t') {
206 _bufptr++;
207 }
208 }
209
210
211 char* scan_and_terminate(char delim) {
212 char* str = _bufptr;
213 while (*_bufptr != delim && *_bufptr != '\0') {
214 _bufptr++;
215 }
216 if (*_bufptr != '\0') {
217 *_bufptr++ = '\0';
218 }
219 if (_bufptr == str) {
220 // nothing here
221 return NULL;
222 }
223 return str;
224 }
225
226 char* parse_string() {
227 if (had_error()) return NULL;
228
229 skip_ws();
230 return scan_and_terminate(' ');
231 }
232
233 char* parse_quoted_string() {
234 if (had_error()) return NULL;
235
236 skip_ws();
237
238 if (*_bufptr == '"') {
239 _bufptr++;
240 return scan_and_terminate('"');
241 } else {
242 return scan_and_terminate(' ');
243 }
244 }
245
246 const char* parse_escaped_string() {
247 char* result = parse_quoted_string();
248 if (result != NULL) {
249 unescape_string(result);
250 }
251 return result;
252 }
253
254 // Look for the tag 'tag' followed by an
255 bool parse_tag_and_count(const char* tag, int& length) {
256 const char* t = parse_string();
257 if (t == NULL) {
258 return false;
259 }
260
261 if (strcmp(tag, t) != 0) {
262 report_error(tag);
263 return false;
264 }
265 length = parse_int("parse_tag_and_count");
266 return !had_error();
267 }
268
269 // Parse a sequence of raw data encoded as bytes and return the
270 // resulting data.
271 char* parse_data(const char* tag, int& length) {
272 if (!parse_tag_and_count(tag, length)) {
273 return NULL;
274 }
275
276 char * result = NEW_RESOURCE_ARRAY(char, length);
277 for (int i = 0; i < length; i++) {
278 int val = parse_int("data");
279 result[i] = val;
280 }
281 return result;
282 }
283
284 // Parse a standard chunk of data emitted as:
285 // 'tag' <length> # # ...
286 // Where each # is an intptr_t item
287 intptr_t* parse_intptr_data(const char* tag, int& length) {
288 if (!parse_tag_and_count(tag, length)) {
289 return NULL;
290 }
291
292 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
293 for (int i = 0; i < length; i++) {
294 skip_ws();
295 intptr_t val = parse_intptr_t("data");
296 result[i] = val;
297 }
298 return result;
299 }
300
301 // Parse a possibly quoted version of a symbol into a symbolOop
302 Symbol* parse_symbol(TRAPS) {
303 const char* str = parse_escaped_string();
304 if (str != NULL) {
305 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
306 return sym;
307 }
308 return NULL;
309 }
310
311 // Parse a valid klass name and look it up
312 Klass* parse_klass(TRAPS) {
313 const char* str = parse_escaped_string();
314 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
315 if (klass_name != NULL) {
316 Klass* k = NULL;
317 if (_iklass != NULL) {
318 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
319 } else {
320 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
321 }
322 if (HAS_PENDING_EXCEPTION) {
323 oop throwable = PENDING_EXCEPTION;
324 java_lang_Throwable::print(throwable, tty);
325 tty->cr();
326 report_error(str);
327 return NULL;
328 }
329 return k;
330 }
331 return NULL;
332 }
333
334 // Lookup a klass
335 Klass* resolve_klass(const char* klass, TRAPS) {
336 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);
337 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
338 }
339
340 // Parse the standard tuple of <klass> <name> <signature>
341 Method* parse_method(TRAPS) {
342 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
343 Symbol* method_name = parse_symbol(CHECK_NULL);
344 Symbol* method_signature = parse_symbol(CHECK_NULL);
345 Method* m = k->find_method(method_name, method_signature);
346 if (m == NULL) {
347 report_error("Can't find method");
348 }
349 return m;
350 }
351
352 int get_line(int c) {
353 while(c != EOF) {
354 if (_buffer_pos + 1 >= _buffer_length) {
355 int new_length = _buffer_length * 2;
356 // Next call will throw error in case of OOM.
357 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
358 _buffer_length = new_length;
359 }
360 if (c == '\n') {
361 c = getc(_stream); // get next char
362 break;
363 } else if (c == '\r') {
364 // skip LF
365 } else {
366 _buffer[_buffer_pos++] = c;
367 }
368 c = getc(_stream);
369 }
370 // null terminate it, reset the pointer
371 _buffer[_buffer_pos] = '\0'; // NL or EOF
372 _buffer_pos = 0;
373 _bufptr = _buffer;
374 return c;
375 }
376
377 // Process each line of the replay file executing each command until
378 // the file ends.
379 void process(TRAPS) {
380 int line_no = 1;
381 int c = getc(_stream);
382 while(c != EOF) {
383 c = get_line(c);
384 process_command(THREAD);
385 if (had_error()) {
386 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
387 if (ReplayIgnoreInitErrors) {
388 CLEAR_PENDING_EXCEPTION;
389 _error_message = NULL;
390 } else {
391 return;
392 }
393 }
394 line_no++;
395 }
396 }
397
398 void process_command(TRAPS) {
399 char* cmd = parse_string();
400 if (cmd == NULL) {
401 return;
402 }
403 if (strcmp("#", cmd) == 0) {
404 // ignore
405 } else if (strcmp("compile", cmd) == 0) {
406 process_compile(CHECK);
407 } else if (strcmp("ciMethod", cmd) == 0) {
408 process_ciMethod(CHECK);
409 } else if (strcmp("ciMethodData", cmd) == 0) {
410 process_ciMethodData(CHECK);
411 } else if (strcmp("staticfield", cmd) == 0) {
412 process_staticfield(CHECK);
413 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
414 process_ciInstanceKlass(CHECK);
415 } else if (strcmp("instanceKlass", cmd) == 0) {
416 process_instanceKlass(CHECK);
417 #if INCLUDE_JVMTI
418 } else if (strcmp("JvmtiExport", cmd) == 0) {
419 process_JvmtiExport(CHECK);
420 #endif // INCLUDE_JVMTI
421 } else {
422 report_error("unknown command");
423 }
424 }
425
426 // validation of comp_level
427 bool is_valid_comp_level(int comp_level) {
428 const int msg_len = 256;
429 char* msg = NULL;
430 if (!is_compile(comp_level)) {
431 msg = NEW_RESOURCE_ARRAY(char, msg_len);
432 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
433 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) {
434 msg = NEW_RESOURCE_ARRAY(char, msg_len);
435 switch (comp_level) {
436 case CompLevel_simple:
437 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level);
438 break;
439 case CompLevel_full_optimization:
440 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level);
441 break;
442 default:
443 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level);
444 }
445 }
446 if (msg != NULL) {
447 report_error(msg);
448 return false;
449 }
450 return true;
451 }
452
453 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ...
454 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
455 _imethod = m;
456 _iklass = imethod->holder();
457 _entry_bci = entry_bci;
458 _comp_level = comp_level;
459 int line_no = 1;
460 int c = getc(_stream);
461 while(c != EOF) {
462 c = get_line(c);
463 // Expecting only lines with "compile" command in inline replay file.
464 char* cmd = parse_string();
465 if (cmd == NULL || strcmp("compile", cmd) != 0) {
466 return NULL;
467 }
468 process_compile(CHECK_NULL);
469 if (had_error()) {
470 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
471 tty->print_cr("%s", _buffer);
472 return NULL;
473 }
474 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
475 // Found inlining record for the requested method.
476 return _ci_inline_records;
477 }
478 line_no++;
479 }
480 return NULL;
481 }
482
483 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ...
484 void process_compile(TRAPS) {
485 Method* method = parse_method(CHECK);
486 if (had_error()) return;
487 int entry_bci = parse_int("entry_bci");
488 const char* comp_level_label = "comp_level";
489 int comp_level = parse_int(comp_level_label);
490 // old version w/o comp_level
491 if (had_error() && (error_message() == comp_level_label)) {
492 // use highest available tier
493 comp_level = TieredCompilation ? TieredStopAtLevel : CompLevel_highest_tier;
494 }
495 if (!is_valid_comp_level(comp_level)) {
496 return;
497 }
498 if (_imethod != NULL) {
499 // Replay Inlining
500 if (entry_bci != _entry_bci || comp_level != _comp_level) {
501 return;
502 }
503 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
504 const char* imethod_name = _imethod->name()->as_utf8();
505 const char* isignature = _imethod->signature()->as_utf8();
506 const char* klass_name = method->method_holder()->name()->as_utf8();
507 const char* method_name = method->name()->as_utf8();
508 const char* signature = method->signature()->as_utf8();
509 if (strcmp(iklass_name, klass_name) != 0 ||
510 strcmp(imethod_name, method_name) != 0 ||
511 strcmp(isignature, signature) != 0) {
512 return;
513 }
514 }
515 int inline_count = 0;
516 if (parse_tag_and_count("inline", inline_count)) {
517 // Record inlining data
518 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
519 for (int i = 0; i < inline_count; i++) {
520 int depth = parse_int("inline_depth");
521 int bci = parse_int("inline_bci");
522 if (had_error()) {
523 break;
524 }
525 Method* inl_method = parse_method(CHECK);
526 if (had_error()) {
527 break;
528 }
529 new_ciInlineRecord(inl_method, bci, depth);
530 }
531 }
532 if (_imethod != NULL) {
533 return; // Replay Inlining
534 }
535 InstanceKlass* ik = method->method_holder();
536 ik->initialize(THREAD);
537 if (HAS_PENDING_EXCEPTION) {
538 oop throwable = PENDING_EXCEPTION;
539 java_lang_Throwable::print(throwable, tty);
540 tty->cr();
541 if (ReplayIgnoreInitErrors) {
542 CLEAR_PENDING_EXCEPTION;
543 ik->set_init_state(InstanceKlass::fully_initialized);
544 } else {
545 return;
546 }
547 }
548 // Make sure the existence of a prior compile doesn't stop this one
549 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
550 if (nm != NULL) {
551 nm->make_not_entrant();
552 }
553 replay_state = this;
554 CompileBroker::compile_method(method, entry_bci, comp_level,
555 methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
556 replay_state = NULL;
557 reset();
558 }
559
560 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
561 //
562 //
563 void process_ciMethod(TRAPS) {
564 Method* method = parse_method(CHECK);
565 if (had_error()) return;
566 ciMethodRecord* rec = new_ciMethod(method);
567 rec->_invocation_counter = parse_int("invocation_counter");
568 rec->_backedge_counter = parse_int("backedge_counter");
569 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
570 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
571 rec->_instructions_size = parse_int("instructions_size");
572 }
573
574 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> # ... methods <length>
575 void process_ciMethodData(TRAPS) {
576 Method* method = parse_method(CHECK);
577 if (had_error()) return;
578 /* just copied from Method, to build interpret data*/
579
580 // To be properly initialized, some profiling in the MDO needs the
581 // method to be rewritten (number of arguments at a call for
582 // instance)
583 method->method_holder()->link_class(CHECK);
584 // methodOopDesc::build_interpreter_method_data(method, CHECK);
585 {
586 // Grab a lock here to prevent multiple
587 // MethodData*s from being created.
588 MutexLocker ml(MethodData_lock, THREAD);
589 if (method->method_data() == NULL) {
590 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
591 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
592 method->set_method_data(method_data);
593 }
594 }
595
596 // collect and record all the needed information for later
597 ciMethodDataRecord* rec = new_ciMethodData(method);
598 rec->_state = parse_int("state");
599 rec->_current_mileage = parse_int("current_mileage");
600
601 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
602 if (rec->_orig_data == NULL) {
603 return;
604 }
605 rec->_data = parse_intptr_data("data", rec->_data_length);
606 if (rec->_data == NULL) {
607 return;
608 }
609 if (!parse_tag_and_count("oops", rec->_classes_length)) {
610 return;
611 }
612 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
613 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
614 for (int i = 0; i < rec->_classes_length; i++) {
615 int offset = parse_int("offset");
616 if (had_error()) {
617 return;
618 }
619 Klass* k = parse_klass(CHECK);
620 rec->_classes_offsets[i] = offset;
621 rec->_classes[i] = k;
622 }
623
624 if (!parse_tag_and_count("methods", rec->_methods_length)) {
625 return;
626 }
627 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
628 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
629 for (int i = 0; i < rec->_methods_length; i++) {
630 int offset = parse_int("offset");
631 if (had_error()) {
632 return;
633 }
634 Method* m = parse_method(CHECK);
635 rec->_methods_offsets[i] = offset;
636 rec->_methods[i] = m;
637 }
638 }
639
640 // instanceKlass <name>
641 //
642 // Loads and initializes the klass 'name'. This can be used to
643 // create particular class loading environments
644 void process_instanceKlass(TRAPS) {
645 // just load the referenced class
646 Klass* k = parse_klass(CHECK);
647 }
648
649 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
650 //
651 // Load the klass 'name' and link or initialize it. Verify that the
652 // constant pool is the same length as 'length' and make sure the
653 // constant pool tags are in the same state.
654 void process_ciInstanceKlass(TRAPS) {
655 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
656 int is_linked = parse_int("is_linked");
657 int is_initialized = parse_int("is_initialized");
658 int length = parse_int("length");
659 if (is_initialized) {
660 k->initialize(THREAD);
661 if (HAS_PENDING_EXCEPTION) {
662 oop throwable = PENDING_EXCEPTION;
663 java_lang_Throwable::print(throwable, tty);
664 tty->cr();
665 if (ReplayIgnoreInitErrors) {
666 CLEAR_PENDING_EXCEPTION;
667 k->set_init_state(InstanceKlass::fully_initialized);
668 } else {
669 return;
670 }
671 }
672 } else if (is_linked) {
673 k->link_class(CHECK);
674 }
675 ConstantPool* cp = k->constants();
676 if (length != cp->length()) {
677 report_error("constant pool length mismatch: wrong class files?");
678 return;
679 }
680
681 int parsed_two_word = 0;
682 for (int i = 1; i < length; i++) {
683 int tag = parse_int("tag");
684 if (had_error()) {
685 return;
686 }
687 switch (cp->tag_at(i).value()) {
688 case JVM_CONSTANT_UnresolvedClass: {
689 if (tag == JVM_CONSTANT_Class) {
690 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
691 Klass* k = cp->klass_at(i, CHECK);
692 }
693 break;
694 }
695 case JVM_CONSTANT_Long:
696 case JVM_CONSTANT_Double:
697 parsed_two_word = i + 1;
698
699 case JVM_CONSTANT_ClassIndex:
700 case JVM_CONSTANT_StringIndex:
701 case JVM_CONSTANT_String:
702 case JVM_CONSTANT_UnresolvedClassInError:
703 case JVM_CONSTANT_Fieldref:
704 case JVM_CONSTANT_Methodref:
705 case JVM_CONSTANT_InterfaceMethodref:
706 case JVM_CONSTANT_NameAndType:
707 case JVM_CONSTANT_Utf8:
708 case JVM_CONSTANT_Integer:
709 case JVM_CONSTANT_Float:
710 case JVM_CONSTANT_MethodHandle:
711 case JVM_CONSTANT_MethodType:
712 case JVM_CONSTANT_InvokeDynamic:
713 if (tag != cp->tag_at(i).value()) {
714 report_error("tag mismatch: wrong class files?");
715 return;
716 }
717 break;
718
719 case JVM_CONSTANT_Class:
720 if (tag == JVM_CONSTANT_Class) {
721 } else if (tag == JVM_CONSTANT_UnresolvedClass) {
722 tty->print_cr("Warning: entry was unresolved in the replay data");
723 } else {
724 report_error("Unexpected tag");
725 return;
726 }
727 break;
728
729 case 0:
730 if (parsed_two_word == i) continue;
731
732 default:
733 fatal("Unexpected tag: %d", cp->tag_at(i).value());
734 break;
735 }
736
737 }
738 }
739
740 // Initialize a class and fill in the value for a static field.
741 // This is useful when the compile was dependent on the value of
742 // static fields but it's impossible to properly rerun the static
743 // initiailizer.
744 void process_staticfield(TRAPS) {
745 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
746
747 if (ReplaySuppressInitializers == 0 ||
748 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
749 return;
750 }
751
752 assert(k->is_initialized(), "must be");
753
754 const char* field_name = parse_escaped_string();;
755 const char* field_signature = parse_string();
756 fieldDescriptor fd;
757 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
758 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
759 if (!k->find_local_field(name, sig, &fd) ||
760 !fd.is_static() ||
761 fd.has_initial_value()) {
762 report_error(field_name);
763 return;
764 }
765
766 oop java_mirror = k->java_mirror();
767 if (field_signature[0] == '[') {
768 int length = parse_int("array length");
769 oop value = NULL;
770
771 if (field_signature[1] == '[') {
772 // multi dimensional array
773 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
774 int rank = 0;
775 while (field_signature[rank] == '[') {
776 rank++;
777 }
778 int* dims = NEW_RESOURCE_ARRAY(int, rank);
779 dims[0] = length;
780 for (int i = 1; i < rank; i++) {
781 dims[i] = 1; // These aren't relevant to the compiler
782 }
783 value = kelem->multi_allocate(rank, dims, CHECK);
784 } else {
785 if (strcmp(field_signature, "[B") == 0) {
786 value = oopFactory::new_byteArray(length, CHECK);
787 } else if (strcmp(field_signature, "[Z") == 0) {
788 value = oopFactory::new_boolArray(length, CHECK);
789 } else if (strcmp(field_signature, "[C") == 0) {
790 value = oopFactory::new_charArray(length, CHECK);
791 } else if (strcmp(field_signature, "[S") == 0) {
792 value = oopFactory::new_shortArray(length, CHECK);
793 } else if (strcmp(field_signature, "[F") == 0) {
794 value = oopFactory::new_singleArray(length, CHECK);
795 } else if (strcmp(field_signature, "[D") == 0) {
796 value = oopFactory::new_doubleArray(length, CHECK);
797 } else if (strcmp(field_signature, "[I") == 0) {
798 value = oopFactory::new_intArray(length, CHECK);
799 } else if (strcmp(field_signature, "[J") == 0) {
800 value = oopFactory::new_longArray(length, CHECK);
801 } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
802 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
803 value = oopFactory::new_objArray(kelem(), length, CHECK);
804 } else {
805 report_error("unhandled array staticfield");
806 }
807 }
808 java_mirror->obj_field_put(fd.offset(), value);
809 } else {
810 const char* string_value = parse_escaped_string();
811 if (strcmp(field_signature, "I") == 0) {
812 int value = atoi(string_value);
813 java_mirror->int_field_put(fd.offset(), value);
814 } else if (strcmp(field_signature, "B") == 0) {
815 int value = atoi(string_value);
816 java_mirror->byte_field_put(fd.offset(), value);
817 } else if (strcmp(field_signature, "C") == 0) {
818 int value = atoi(string_value);
819 java_mirror->char_field_put(fd.offset(), value);
820 } else if (strcmp(field_signature, "S") == 0) {
821 int value = atoi(string_value);
822 java_mirror->short_field_put(fd.offset(), value);
823 } else if (strcmp(field_signature, "Z") == 0) {
824 int value = atoi(string_value);
825 java_mirror->bool_field_put(fd.offset(), value);
826 } else if (strcmp(field_signature, "J") == 0) {
827 jlong value;
828 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
829 fprintf(stderr, "Error parsing long: %s\n", string_value);
830 return;
831 }
832 java_mirror->long_field_put(fd.offset(), value);
833 } else if (strcmp(field_signature, "F") == 0) {
834 float value = atof(string_value);
835 java_mirror->float_field_put(fd.offset(), value);
836 } else if (strcmp(field_signature, "D") == 0) {
837 double value = atof(string_value);
838 java_mirror->double_field_put(fd.offset(), value);
839 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
840 Handle value = java_lang_String::create_from_str(string_value, CHECK);
841 java_mirror->obj_field_put(fd.offset(), value());
842 } else if (field_signature[0] == 'L') {
843 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
844 KlassHandle kelem = resolve_klass(field_signature, CHECK);
845 oop value = InstanceKlass::cast(kelem())->allocate_instance(CHECK);
846 java_mirror->obj_field_put(fd.offset(), value);
847 } else {
848 report_error("unhandled staticfield");
849 }
850 }
851 }
852
853 #if INCLUDE_JVMTI
854 void process_JvmtiExport(TRAPS) {
855 const char* field = parse_string();
856 bool value = parse_int("JvmtiExport flag") != 0;
857 if (strcmp(field, "can_access_local_variables") == 0) {
858 JvmtiExport::set_can_access_local_variables(value);
859 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
860 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
861 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
862 JvmtiExport::set_can_post_on_exceptions(value);
863 } else {
864 report_error("Unrecognized JvmtiExport directive");
865 }
866 }
867 #endif // INCLUDE_JVMTI
868
869 // Create and initialize a record for a ciMethod
870 ciMethodRecord* new_ciMethod(Method* method) {
871 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
872 rec->_klass_name = method->method_holder()->name()->as_utf8();
873 rec->_method_name = method->name()->as_utf8();
874 rec->_signature = method->signature()->as_utf8();
875 _ci_method_records.append(rec);
876 return rec;
877 }
878
879 // Lookup data for a ciMethod
880 ciMethodRecord* find_ciMethodRecord(Method* method) {
881 const char* klass_name = method->method_holder()->name()->as_utf8();
882 const char* method_name = method->name()->as_utf8();
883 const char* signature = method->signature()->as_utf8();
884 for (int i = 0; i < _ci_method_records.length(); i++) {
885 ciMethodRecord* rec = _ci_method_records.at(i);
886 if (strcmp(rec->_klass_name, klass_name) == 0 &&
887 strcmp(rec->_method_name, method_name) == 0 &&
888 strcmp(rec->_signature, signature) == 0) {
889 return rec;
890 }
891 }
892 return NULL;
893 }
894
895 // Create and initialize a record for a ciMethodData
896 ciMethodDataRecord* new_ciMethodData(Method* method) {
897 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
898 rec->_klass_name = method->method_holder()->name()->as_utf8();
899 rec->_method_name = method->name()->as_utf8();
900 rec->_signature = method->signature()->as_utf8();
901 _ci_method_data_records.append(rec);
902 return rec;
903 }
904
905 // Lookup data for a ciMethodData
906 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
907 const char* klass_name = method->method_holder()->name()->as_utf8();
908 const char* method_name = method->name()->as_utf8();
909 const char* signature = method->signature()->as_utf8();
910 for (int i = 0; i < _ci_method_data_records.length(); i++) {
911 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
912 if (strcmp(rec->_klass_name, klass_name) == 0 &&
913 strcmp(rec->_method_name, method_name) == 0 &&
914 strcmp(rec->_signature, signature) == 0) {
915 return rec;
916 }
917 }
918 return NULL;
919 }
920
921 // Create and initialize a record for a ciInlineRecord
922 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) {
923 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
924 rec->_klass_name = method->method_holder()->name()->as_utf8();
925 rec->_method_name = method->name()->as_utf8();
926 rec->_signature = method->signature()->as_utf8();
927 rec->_inline_bci = bci;
928 rec->_inline_depth = depth;
929 _ci_inline_records->append(rec);
930 return rec;
931 }
932
933 // Lookup inlining data for a ciMethod
934 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
935 if (_ci_inline_records != NULL) {
936 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
937 }
938 return NULL;
939 }
940
941 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
942 Method* method, int bci, int depth) {
943 if (records != NULL) {
944 const char* klass_name = method->method_holder()->name()->as_utf8();
945 const char* method_name = method->name()->as_utf8();
946 const char* signature = method->signature()->as_utf8();
947 for (int i = 0; i < records->length(); i++) {
948 ciInlineRecord* rec = records->at(i);
949 if ((rec->_inline_bci == bci) &&
950 (rec->_inline_depth == depth) &&
951 (strcmp(rec->_klass_name, klass_name) == 0) &&
952 (strcmp(rec->_method_name, method_name) == 0) &&
953 (strcmp(rec->_signature, signature) == 0)) {
954 return rec;
955 }
956 }
957 }
958 return NULL;
959 }
960
961 const char* error_message() {
962 return _error_message;
963 }
964
965 void reset() {
966 _error_message = NULL;
967 _ci_method_records.clear();
968 _ci_method_data_records.clear();
969 }
970
971 // Take an ascii string contain \u#### escapes and convert it to utf8
972 // in place.
973 static void unescape_string(char* value) {
974 char* from = value;
975 char* to = value;
976 while (*from != '\0') {
977 if (*from != '\\') {
978 *from++ = *to++;
979 } else {
980 switch (from[1]) {
981 case 'u': {
982 from += 2;
983 jchar value=0;
984 for (int i=0; i<4; i++) {
985 char c = *from++;
986 switch (c) {
987 case '0': case '1': case '2': case '3': case '4':
988 case '5': case '6': case '7': case '8': case '9':
989 value = (value << 4) + c - '0';
990 break;
991 case 'a': case 'b': case 'c':
992 case 'd': case 'e': case 'f':
993 value = (value << 4) + 10 + c - 'a';
994 break;
995 case 'A': case 'B': case 'C':
996 case 'D': case 'E': case 'F':
997 value = (value << 4) + 10 + c - 'A';
998 break;
999 default:
1000 ShouldNotReachHere();
1001 }
1002 }
1003 UNICODE::convert_to_utf8(&value, 1, to);
1004 to++;
1005 break;
1006 }
1007 case 't': *to++ = '\t'; from += 2; break;
1008 case 'n': *to++ = '\n'; from += 2; break;
1009 case 'r': *to++ = '\r'; from += 2; break;
1010 case 'f': *to++ = '\f'; from += 2; break;
1011 default:
1012 ShouldNotReachHere();
1013 }
1014 }
1015 }
1016 *from = *to;
1017 }
1018 };
1019
1020 void ciReplay::replay(TRAPS) {
1021 int exit_code = replay_impl(THREAD);
1022
1023 Threads::destroy_vm();
1024
1025 vm_exit(exit_code);
1026 }
1027
1028 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1029 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1030 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1031 return NULL;
1032 }
1033
1034 VM_ENTRY_MARK;
1035 // Load and parse the replay data
1036 CompileReplay rp(InlineDataFile, THREAD);
1037 if (!rp.can_replay()) {
1038 tty->print_cr("ciReplay: !rp.can_replay()");
1039 return NULL;
1040 }
1041 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1042 if (HAS_PENDING_EXCEPTION) {
1043 Handle throwable(THREAD, PENDING_EXCEPTION);
1044 CLEAR_PENDING_EXCEPTION;
1045 java_lang_Throwable::print_stack_trace(throwable, tty);
1046 tty->cr();
1047 return NULL;
1048 }
1049
1050 if (rp.had_error()) {
1051 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1052 return NULL;
1053 }
1054 return data;
1055 }
1056
1057 int ciReplay::replay_impl(TRAPS) {
1058 HandleMark hm;
1059 ResourceMark rm;
1060
1061 if (ReplaySuppressInitializers > 2) {
1062 // ReplaySuppressInitializers > 2 means that we want to allow
1063 // normal VM bootstrap but once we get into the replay itself
1064 // don't allow any intializers to be run.
1065 ReplaySuppressInitializers = 1;
1066 }
1067
1068 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1069 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1070 return 1;
1071 }
1072
1073 // Load and parse the replay data
1074 CompileReplay rp(ReplayDataFile, THREAD);
1075 int exit_code = 0;
1076 if (rp.can_replay()) {
1077 rp.process(THREAD);
1078 } else {
1079 exit_code = 1;
1080 return exit_code;
1081 }
1082
1083 if (HAS_PENDING_EXCEPTION) {
1084 Handle throwable(THREAD, PENDING_EXCEPTION);
1085 CLEAR_PENDING_EXCEPTION;
1086 java_lang_Throwable::print_stack_trace(throwable, tty);
1087 tty->cr();
1088 exit_code = 2;
1089 }
1090
1091 if (rp.had_error()) {
1092 tty->print_cr("Failed on %s", rp.error_message());
1093 exit_code = 1;
1094 }
1095 return exit_code;
1096 }
1097
1098 void ciReplay::initialize(ciMethodData* m) {
1099 if (replay_state == NULL) {
1100 return;
1101 }
1102
1103 ASSERT_IN_VM;
1104 ResourceMark rm;
1105
1106 Method* method = m->get_MethodData()->method();
1107 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1108 if (rec == NULL) {
1109 // This indicates some mismatch with the original environment and
1110 // the replay environment though it's not always enough to
1111 // interfere with reproducing a bug
1112 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1113 method->print_name(tty);
1114 tty->cr();
1115 } else {
1116 m->_state = rec->_state;
1117 m->_current_mileage = rec->_current_mileage;
1118 if (rec->_data_length != 0) {
1119 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1120 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1121
1122 // Write the correct ciObjects back into the profile data
1123 ciEnv* env = ciEnv::current();
1124 for (int i = 0; i < rec->_classes_length; i++) {
1125 Klass *k = rec->_classes[i];
1126 // In case this class pointer is is tagged, preserve the tag
1127 // bits
1128 rec->_data[rec->_classes_offsets[i]] =
1129 ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1130 }
1131 for (int i = 0; i < rec->_methods_length; i++) {
1132 Method *m = rec->_methods[i];
1133 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1134 env->get_metadata(m);
1135 }
1136 // Copy the updated profile data into place as intptr_ts
1137 #ifdef _LP64
1138 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1139 #else
1140 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1141 #endif
1142 }
1143
1144 // copy in the original header
1145 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1146 }
1147 }
1148
1149
1150 bool ciReplay::should_not_inline(ciMethod* method) {
1151 if (replay_state == NULL) {
1152 return false;
1153 }
1154 VM_ENTRY_MARK;
1155 // ciMethod without a record shouldn't be inlined.
1156 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1157 }
1158
1159 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1160 if (data != NULL) {
1161 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1162 VM_ENTRY_MARK;
1163 // Inline record are ordered by bci and depth.
1164 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL;
1165 } else if (replay_state != NULL) {
1166 VM_ENTRY_MARK;
1167 // Inline record are ordered by bci and depth.
1168 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL;
1169 }
1170 return false;
1171 }
1172
1173 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1174 if (data != NULL) {
1175 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1176 VM_ENTRY_MARK;
1177 // Inline record are ordered by bci and depth.
1178 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1179 } else if (replay_state != NULL) {
1180 VM_ENTRY_MARK;
1181 // Inline record are ordered by bci and depth.
1182 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1183 }
1184 return false;
1185 }
1186
1187 void ciReplay::initialize(ciMethod* m) {
1188 if (replay_state == NULL) {
1189 return;
1190 }
1191
1192 ASSERT_IN_VM;
1193 ResourceMark rm;
1194
1195 Method* method = m->get_Method();
1196 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1197 if (rec == NULL) {
1198 // This indicates some mismatch with the original environment and
1199 // the replay environment though it's not always enough to
1200 // interfere with reproducing a bug
1201 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1202 method->print_name(tty);
1203 tty->cr();
1204 } else {
1205 EXCEPTION_CONTEXT;
1206 // m->_instructions_size = rec->_instructions_size;
1207 m->_instructions_size = -1;
1208 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1209 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1210 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1211 guarantee(mcs != NULL, "method counters allocation failed");
1212 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1213 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1214 }
1215 }
1216
1217 bool ciReplay::is_loaded(Method* method) {
1218 if (replay_state == NULL) {
1219 return true;
1220 }
1221
1222 ASSERT_IN_VM;
1223 ResourceMark rm;
1224
1225 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1226 return rec != NULL;
1227 }
1228 #endif // PRODUCT