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 "gc/shared/referencePendingListLocker.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "utilities/copy.hpp"
38 #include "utilities/macros.hpp"
39
40 #ifndef PRODUCT
41
42 // ciReplay
43
44 typedef struct _ciMethodDataRecord {
45 const char* _klass_name;
46 const char* _method_name;
47 const char* _signature;
48
49 int _state;
50 int _current_mileage;
51
52 intptr_t* _data;
53 char* _orig_data;
54 Klass** _classes;
55 Method** _methods;
56 int* _classes_offsets;
57 int* _methods_offsets;
58 int _data_length;
59 int _orig_data_length;
60 int _classes_length;
61 int _methods_length;
62 } ciMethodDataRecord;
63
64 typedef struct _ciMethodRecord {
65 const char* _klass_name;
66 const char* _method_name;
67 const char* _signature;
68
69 int _instructions_size;
70 int _interpreter_invocation_count;
71 int _interpreter_throwout_count;
72 int _invocation_counter;
73 int _backedge_counter;
74 } ciMethodRecord;
75
76 typedef struct _ciInlineRecord {
77 const char* _klass_name;
78 const char* _method_name;
79 const char* _signature;
80
81 int _inline_depth;
82 int _inline_bci;
83 } ciInlineRecord;
84
85 class CompileReplay;
86 static CompileReplay* replay_state;
87
88 class CompileReplay : public StackObj {
89 private:
90 FILE* _stream;
91 Thread* _thread;
92 Handle _protection_domain;
93 Handle _loader;
94
95 GrowableArray<ciMethodRecord*> _ci_method_records;
96 GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
97
98 // Use pointer because we may need to return inline records
99 // without destroying them.
100 GrowableArray<ciInlineRecord*>* _ci_inline_records;
101
102 const char* _error_message;
103
104 char* _bufptr;
105 char* _buffer;
106 int _buffer_length;
107 int _buffer_pos;
108
109 // "compile" data
110 ciKlass* _iklass;
111 Method* _imethod;
112 int _entry_bci;
113 int _comp_level;
114
115 public:
116 CompileReplay(const char* filename, TRAPS) {
117 _thread = THREAD;
118 _loader = Handle(_thread, SystemDictionary::java_system_loader());
119 _protection_domain = Handle();
120
121 _stream = fopen(filename, "rt");
122 if (_stream == NULL) {
123 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
124 }
125
126 _ci_inline_records = NULL;
127 _error_message = NULL;
128
129 _buffer_length = 32;
130 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
131 _bufptr = _buffer;
132 _buffer_pos = 0;
133
134 _imethod = NULL;
135 _iklass = NULL;
136 _entry_bci = 0;
137 _comp_level = 0;
138
139 test();
140 }
141
142 ~CompileReplay() {
143 if (_stream != NULL) fclose(_stream);
144 }
145
146 void test() {
147 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
148 _bufptr = _buffer;
149 assert(parse_int("test") == 1, "what");
150 assert(parse_int("test") == 2, "what");
151 assert(strcmp(parse_string(), "foo") == 0, "what");
152 assert(parse_int("test") == 4, "what");
153 assert(strcmp(parse_string(), "bar") == 0, "what");
154 assert(parse_intptr_t("test") == 9, "what");
155 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
156 }
157
158 bool had_error() {
159 return _error_message != NULL || _thread->has_pending_exception();
160 }
161
162 bool can_replay() {
163 return !(_stream == NULL || had_error());
164 }
165
166 void report_error(const char* msg) {
167 _error_message = msg;
168 // Restore the _buffer contents for error reporting
169 for (int i = 0; i < _buffer_pos; i++) {
170 if (_buffer[i] == '\0') _buffer[i] = ' ';
171 }
172 }
173
174 int parse_int(const char* label) {
175 if (had_error()) {
176 return 0;
177 }
178
179 int v = 0;
180 int read;
181 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
182 report_error(label);
183 } else {
184 _bufptr += read;
185 }
186 return v;
187 }
188
189 intptr_t parse_intptr_t(const char* label) {
190 if (had_error()) {
191 return 0;
192 }
193
194 intptr_t v = 0;
195 int read;
196 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
197 report_error(label);
198 } else {
199 _bufptr += read;
200 }
201 return v;
202 }
203
204 void skip_ws() {
205 // Skip any leading whitespace
206 while (*_bufptr == ' ' || *_bufptr == '\t') {
207 _bufptr++;
208 }
209 }
210
211
212 char* scan_and_terminate(char delim) {
213 char* str = _bufptr;
214 while (*_bufptr != delim && *_bufptr != '\0') {
215 _bufptr++;
216 }
217 if (*_bufptr != '\0') {
218 *_bufptr++ = '\0';
219 }
220 if (_bufptr == str) {
221 // nothing here
222 return NULL;
223 }
224 return str;
225 }
226
227 char* parse_string() {
228 if (had_error()) return NULL;
229
230 skip_ws();
231 return scan_and_terminate(' ');
232 }
233
234 char* parse_quoted_string() {
235 if (had_error()) return NULL;
236
237 skip_ws();
238
239 if (*_bufptr == '"') {
240 _bufptr++;
241 return scan_and_terminate('"');
242 } else {
243 return scan_and_terminate(' ');
244 }
245 }
246
247 const char* parse_escaped_string() {
248 char* result = parse_quoted_string();
249 if (result != NULL) {
250 unescape_string(result);
251 }
252 return result;
253 }
254
255 // Look for the tag 'tag' followed by an
256 bool parse_tag_and_count(const char* tag, int& length) {
257 const char* t = parse_string();
258 if (t == NULL) {
259 return false;
260 }
261
262 if (strcmp(tag, t) != 0) {
263 report_error(tag);
264 return false;
265 }
266 length = parse_int("parse_tag_and_count");
267 return !had_error();
268 }
269
270 // Parse a sequence of raw data encoded as bytes and return the
271 // resulting data.
272 char* parse_data(const char* tag, int& length) {
273 if (!parse_tag_and_count(tag, length)) {
274 return NULL;
275 }
276
277 char * result = NEW_RESOURCE_ARRAY(char, length);
278 for (int i = 0; i < length; i++) {
279 int val = parse_int("data");
280 result[i] = val;
281 }
282 return result;
283 }
284
285 // Parse a standard chunk of data emitted as:
286 // 'tag' <length> # # ...
287 // Where each # is an intptr_t item
288 intptr_t* parse_intptr_data(const char* tag, int& length) {
289 if (!parse_tag_and_count(tag, length)) {
290 return NULL;
291 }
292
293 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
294 for (int i = 0; i < length; i++) {
295 skip_ws();
296 intptr_t val = parse_intptr_t("data");
297 result[i] = val;
298 }
299 return result;
300 }
301
302 // Parse a possibly quoted version of a symbol into a symbolOop
303 Symbol* parse_symbol(TRAPS) {
304 const char* str = parse_escaped_string();
305 if (str != NULL) {
306 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
307 return sym;
308 }
309 return NULL;
310 }
311
312 // Parse a valid klass name and look it up
313 Klass* parse_klass(TRAPS) {
314 const char* str = parse_escaped_string();
315 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
316 if (klass_name != NULL) {
317 Klass* k = NULL;
318 if (_iklass != NULL) {
319 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
320 } else {
321 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
322 }
323 if (HAS_PENDING_EXCEPTION) {
324 oop throwable = PENDING_EXCEPTION;
325 java_lang_Throwable::print(throwable, tty);
326 tty->cr();
327 report_error(str);
328 return NULL;
329 }
330 return k;
331 }
332 return NULL;
333 }
334
335 // Lookup a klass
336 Klass* resolve_klass(const char* klass, TRAPS) {
337 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);
338 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
339 }
340
341 // Parse the standard tuple of <klass> <name> <signature>
342 Method* parse_method(TRAPS) {
343 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
344 Symbol* method_name = parse_symbol(CHECK_NULL);
345 Symbol* method_signature = parse_symbol(CHECK_NULL);
346 Method* m = k->find_method(method_name, method_signature);
347 if (m == NULL) {
348 report_error("Can't find method");
349 }
350 return m;
351 }
352
353 int get_line(int c) {
354 while(c != EOF) {
355 if (_buffer_pos + 1 >= _buffer_length) {
356 int new_length = _buffer_length * 2;
357 // Next call will throw error in case of OOM.
358 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
359 _buffer_length = new_length;
360 }
361 if (c == '\n') {
362 c = getc(_stream); // get next char
363 break;
364 } else if (c == '\r') {
365 // skip LF
366 } else {
367 _buffer[_buffer_pos++] = c;
368 }
369 c = getc(_stream);
370 }
371 // null terminate it, reset the pointer
372 _buffer[_buffer_pos] = '\0'; // NL or EOF
373 _buffer_pos = 0;
374 _bufptr = _buffer;
375 return c;
376 }
377
378 // Process each line of the replay file executing each command until
379 // the file ends.
380 void process(TRAPS) {
381 int line_no = 1;
382 int c = getc(_stream);
383 while(c != EOF) {
384 c = get_line(c);
385 process_command(THREAD);
386 if (had_error()) {
387 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
388 if (ReplayIgnoreInitErrors) {
389 CLEAR_PENDING_EXCEPTION;
390 _error_message = NULL;
391 } else {
392 return;
393 }
394 }
395 line_no++;
396 }
397 }
398
399 void process_command(TRAPS) {
400 char* cmd = parse_string();
401 if (cmd == NULL) {
402 return;
403 }
404 if (strcmp("#", cmd) == 0) {
405 // ignore
406 } else if (strcmp("compile", cmd) == 0) {
407 process_compile(CHECK);
408 } else if (strcmp("ciMethod", cmd) == 0) {
409 process_ciMethod(CHECK);
410 } else if (strcmp("ciMethodData", cmd) == 0) {
411 process_ciMethodData(CHECK);
412 } else if (strcmp("staticfield", cmd) == 0) {
413 process_staticfield(CHECK);
414 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
415 process_ciInstanceKlass(CHECK);
416 } else if (strcmp("instanceKlass", cmd) == 0) {
417 process_instanceKlass(CHECK);
418 #if INCLUDE_JVMTI
419 } else if (strcmp("JvmtiExport", cmd) == 0) {
420 process_JvmtiExport(CHECK);
421 #endif // INCLUDE_JVMTI
422 } else {
423 report_error("unknown command");
424 }
425 }
426
427 // validation of comp_level
428 bool is_valid_comp_level(int comp_level) {
429 const int msg_len = 256;
430 char* msg = NULL;
431 if (!is_compile(comp_level)) {
432 msg = NEW_RESOURCE_ARRAY(char, msg_len);
433 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
434 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) {
435 msg = NEW_RESOURCE_ARRAY(char, msg_len);
436 switch (comp_level) {
437 case CompLevel_simple:
438 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level);
439 break;
440 case CompLevel_full_optimization:
441 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level);
442 break;
443 default:
444 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level);
445 }
446 }
447 if (msg != NULL) {
448 report_error(msg);
449 return false;
450 }
451 return true;
452 }
453
454 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ...
455 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
456 _imethod = m;
457 _iklass = imethod->holder();
458 _entry_bci = entry_bci;
459 _comp_level = comp_level;
460 int line_no = 1;
461 int c = getc(_stream);
462 while(c != EOF) {
463 c = get_line(c);
464 // Expecting only lines with "compile" command in inline replay file.
465 char* cmd = parse_string();
466 if (cmd == NULL || strcmp("compile", cmd) != 0) {
467 return NULL;
468 }
469 process_compile(CHECK_NULL);
470 if (had_error()) {
471 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
472 tty->print_cr("%s", _buffer);
473 return NULL;
474 }
475 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
476 // Found inlining record for the requested method.
477 return _ci_inline_records;
478 }
479 line_no++;
480 }
481 return NULL;
482 }
483
484 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ...
485 void process_compile(TRAPS) {
486 Method* method = parse_method(CHECK);
487 if (had_error()) return;
488 int entry_bci = parse_int("entry_bci");
489 const char* comp_level_label = "comp_level";
490 int comp_level = parse_int(comp_level_label);
491 // old version w/o comp_level
492 if (had_error() && (error_message() == comp_level_label)) {
493 // use highest available tier
494 comp_level = TieredCompilation ? TieredStopAtLevel : CompLevel_highest_tier;
495 }
496 if (!is_valid_comp_level(comp_level)) {
497 return;
498 }
499 if (_imethod != NULL) {
500 // Replay Inlining
501 if (entry_bci != _entry_bci || comp_level != _comp_level) {
502 return;
503 }
504 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
505 const char* imethod_name = _imethod->name()->as_utf8();
506 const char* isignature = _imethod->signature()->as_utf8();
507 const char* klass_name = method->method_holder()->name()->as_utf8();
508 const char* method_name = method->name()->as_utf8();
509 const char* signature = method->signature()->as_utf8();
510 if (strcmp(iklass_name, klass_name) != 0 ||
511 strcmp(imethod_name, method_name) != 0 ||
512 strcmp(isignature, signature) != 0) {
513 return;
514 }
515 }
516 int inline_count = 0;
517 if (parse_tag_and_count("inline", inline_count)) {
518 // Record inlining data
519 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
520 for (int i = 0; i < inline_count; i++) {
521 int depth = parse_int("inline_depth");
522 int bci = parse_int("inline_bci");
523 if (had_error()) {
524 break;
525 }
526 Method* inl_method = parse_method(CHECK);
527 if (had_error()) {
528 break;
529 }
530 new_ciInlineRecord(inl_method, bci, depth);
531 }
532 }
533 if (_imethod != NULL) {
534 return; // Replay Inlining
535 }
536 InstanceKlass* ik = method->method_holder();
537 ik->initialize(THREAD);
538 if (HAS_PENDING_EXCEPTION) {
539 oop throwable = PENDING_EXCEPTION;
540 java_lang_Throwable::print(throwable, tty);
541 tty->cr();
542 if (ReplayIgnoreInitErrors) {
543 CLEAR_PENDING_EXCEPTION;
544 ik->set_init_state(InstanceKlass::fully_initialized);
545 } else {
546 return;
547 }
548 }
549 // Make sure the existence of a prior compile doesn't stop this one
550 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
551 if (nm != NULL) {
552 nm->make_not_entrant();
553 }
554 replay_state = this;
555 CompileBroker::compile_method(method, entry_bci, comp_level,
556 methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
557 replay_state = NULL;
558 reset();
559 }
560
561 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
562 //
563 //
564 void process_ciMethod(TRAPS) {
565 Method* method = parse_method(CHECK);
566 if (had_error()) return;
567 ciMethodRecord* rec = new_ciMethod(method);
568 rec->_invocation_counter = parse_int("invocation_counter");
569 rec->_backedge_counter = parse_int("backedge_counter");
570 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
571 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
572 rec->_instructions_size = parse_int("instructions_size");
573 }
574
575 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> # ... methods <length>
576 void process_ciMethodData(TRAPS) {
577 Method* method = parse_method(CHECK);
578 if (had_error()) return;
579 /* just copied from Method, to build interpret data*/
580 if (ReferencePendingListLocker::is_locked_by_self()) {
581 return;
582 }
583 // To be properly initialized, some profiling in the MDO needs the
584 // method to be rewritten (number of arguments at a call for
585 // instance)
586 method->method_holder()->link_class(CHECK);
587 // methodOopDesc::build_interpreter_method_data(method, CHECK);
588 {
589 // Grab a lock here to prevent multiple
590 // MethodData*s from being created.
591 MutexLocker ml(MethodData_lock, THREAD);
592 if (method->method_data() == NULL) {
593 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
594 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
595 method->set_method_data(method_data);
596 }
597 }
598
599 // collect and record all the needed information for later
600 ciMethodDataRecord* rec = new_ciMethodData(method);
601 rec->_state = parse_int("state");
602 rec->_current_mileage = parse_int("current_mileage");
603
604 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
605 if (rec->_orig_data == NULL) {
606 return;
607 }
608 rec->_data = parse_intptr_data("data", rec->_data_length);
609 if (rec->_data == NULL) {
610 return;
611 }
612 if (!parse_tag_and_count("oops", rec->_classes_length)) {
613 return;
614 }
615 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
616 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
617 for (int i = 0; i < rec->_classes_length; i++) {
618 int offset = parse_int("offset");
619 if (had_error()) {
620 return;
621 }
622 Klass* k = parse_klass(CHECK);
623 rec->_classes_offsets[i] = offset;
624 rec->_classes[i] = k;
625 }
626
627 if (!parse_tag_and_count("methods", rec->_methods_length)) {
628 return;
629 }
630 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
631 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
632 for (int i = 0; i < rec->_methods_length; i++) {
633 int offset = parse_int("offset");
634 if (had_error()) {
635 return;
636 }
637 Method* m = parse_method(CHECK);
638 rec->_methods_offsets[i] = offset;
639 rec->_methods[i] = m;
640 }
641 }
642
643 // instanceKlass <name>
644 //
645 // Loads and initializes the klass 'name'. This can be used to
646 // create particular class loading environments
647 void process_instanceKlass(TRAPS) {
648 // just load the referenced class
649 Klass* k = parse_klass(CHECK);
650 }
651
652 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
653 //
654 // Load the klass 'name' and link or initialize it. Verify that the
655 // constant pool is the same length as 'length' and make sure the
656 // constant pool tags are in the same state.
657 void process_ciInstanceKlass(TRAPS) {
658 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
659 int is_linked = parse_int("is_linked");
660 int is_initialized = parse_int("is_initialized");
661 int length = parse_int("length");
662 if (is_initialized) {
663 k->initialize(THREAD);
664 if (HAS_PENDING_EXCEPTION) {
665 oop throwable = PENDING_EXCEPTION;
666 java_lang_Throwable::print(throwable, tty);
667 tty->cr();
668 if (ReplayIgnoreInitErrors) {
669 CLEAR_PENDING_EXCEPTION;
670 k->set_init_state(InstanceKlass::fully_initialized);
671 } else {
672 return;
673 }
674 }
675 } else if (is_linked) {
676 k->link_class(CHECK);
677 }
678 ConstantPool* cp = k->constants();
679 if (length != cp->length()) {
680 report_error("constant pool length mismatch: wrong class files?");
681 return;
682 }
683
684 int parsed_two_word = 0;
685 for (int i = 1; i < length; i++) {
686 int tag = parse_int("tag");
687 if (had_error()) {
688 return;
689 }
690 switch (cp->tag_at(i).value()) {
691 case JVM_CONSTANT_UnresolvedClass: {
692 if (tag == JVM_CONSTANT_Class) {
693 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
694 Klass* k = cp->klass_at(i, CHECK);
695 }
696 break;
697 }
698 case JVM_CONSTANT_Long:
699 case JVM_CONSTANT_Double:
700 parsed_two_word = i + 1;
701
702 case JVM_CONSTANT_ClassIndex:
703 case JVM_CONSTANT_StringIndex:
704 case JVM_CONSTANT_String:
705 case JVM_CONSTANT_UnresolvedClassInError:
706 case JVM_CONSTANT_Fieldref:
707 case JVM_CONSTANT_Methodref:
708 case JVM_CONSTANT_InterfaceMethodref:
709 case JVM_CONSTANT_NameAndType:
710 case JVM_CONSTANT_Utf8:
711 case JVM_CONSTANT_Integer:
712 case JVM_CONSTANT_Float:
713 case JVM_CONSTANT_MethodHandle:
714 case JVM_CONSTANT_MethodType:
715 case JVM_CONSTANT_InvokeDynamic:
716 if (tag != cp->tag_at(i).value()) {
717 report_error("tag mismatch: wrong class files?");
718 return;
719 }
720 break;
721
722 case JVM_CONSTANT_Class:
723 if (tag == JVM_CONSTANT_Class) {
724 } else if (tag == JVM_CONSTANT_UnresolvedClass) {
725 tty->print_cr("Warning: entry was unresolved in the replay data");
726 } else {
727 report_error("Unexpected tag");
728 return;
729 }
730 break;
731
732 case 0:
733 if (parsed_two_word == i) continue;
734
735 default:
736 fatal("Unexpected tag: %d", cp->tag_at(i).value());
737 break;
738 }
739
740 }
741 }
742
743 // Initialize a class and fill in the value for a static field.
744 // This is useful when the compile was dependent on the value of
745 // static fields but it's impossible to properly rerun the static
746 // initiailizer.
747 void process_staticfield(TRAPS) {
748 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
749
750 if (ReplaySuppressInitializers == 0 ||
751 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
752 return;
753 }
754
755 assert(k->is_initialized(), "must be");
756
757 const char* field_name = parse_escaped_string();;
758 const char* field_signature = parse_string();
759 fieldDescriptor fd;
760 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
761 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
762 if (!k->find_local_field(name, sig, &fd) ||
763 !fd.is_static() ||
764 fd.has_initial_value()) {
765 report_error(field_name);
766 return;
767 }
768
769 oop java_mirror = k->java_mirror();
770 if (field_signature[0] == '[') {
771 int length = parse_int("array length");
772 oop value = NULL;
773
774 if (field_signature[1] == '[') {
775 // multi dimensional array
776 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
777 int rank = 0;
778 while (field_signature[rank] == '[') {
779 rank++;
780 }
781 int* dims = NEW_RESOURCE_ARRAY(int, rank);
782 dims[0] = length;
783 for (int i = 1; i < rank; i++) {
784 dims[i] = 1; // These aren't relevant to the compiler
785 }
786 value = kelem->multi_allocate(rank, dims, CHECK);
787 } else {
788 if (strcmp(field_signature, "[B") == 0) {
789 value = oopFactory::new_byteArray(length, CHECK);
790 } else if (strcmp(field_signature, "[Z") == 0) {
791 value = oopFactory::new_boolArray(length, CHECK);
792 } else if (strcmp(field_signature, "[C") == 0) {
793 value = oopFactory::new_charArray(length, CHECK);
794 } else if (strcmp(field_signature, "[S") == 0) {
795 value = oopFactory::new_shortArray(length, CHECK);
796 } else if (strcmp(field_signature, "[F") == 0) {
797 value = oopFactory::new_singleArray(length, CHECK);
798 } else if (strcmp(field_signature, "[D") == 0) {
799 value = oopFactory::new_doubleArray(length, CHECK);
800 } else if (strcmp(field_signature, "[I") == 0) {
801 value = oopFactory::new_intArray(length, CHECK);
802 } else if (strcmp(field_signature, "[J") == 0) {
803 value = oopFactory::new_longArray(length, CHECK);
804 } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
805 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
806 value = oopFactory::new_objArray(kelem(), length, CHECK);
807 } else {
808 report_error("unhandled array staticfield");
809 }
810 }
811 java_mirror->obj_field_put(fd.offset(), value);
812 } else {
813 const char* string_value = parse_escaped_string();
814 if (strcmp(field_signature, "I") == 0) {
815 int value = atoi(string_value);
816 java_mirror->int_field_put(fd.offset(), value);
817 } else if (strcmp(field_signature, "B") == 0) {
818 int value = atoi(string_value);
819 java_mirror->byte_field_put(fd.offset(), value);
820 } else if (strcmp(field_signature, "C") == 0) {
821 int value = atoi(string_value);
822 java_mirror->char_field_put(fd.offset(), value);
823 } else if (strcmp(field_signature, "S") == 0) {
824 int value = atoi(string_value);
825 java_mirror->short_field_put(fd.offset(), value);
826 } else if (strcmp(field_signature, "Z") == 0) {
827 int value = atoi(string_value);
828 java_mirror->bool_field_put(fd.offset(), value);
829 } else if (strcmp(field_signature, "J") == 0) {
830 jlong value;
831 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
832 fprintf(stderr, "Error parsing long: %s\n", string_value);
833 return;
834 }
835 java_mirror->long_field_put(fd.offset(), value);
836 } else if (strcmp(field_signature, "F") == 0) {
837 float value = atof(string_value);
838 java_mirror->float_field_put(fd.offset(), value);
839 } else if (strcmp(field_signature, "D") == 0) {
840 double value = atof(string_value);
841 java_mirror->double_field_put(fd.offset(), value);
842 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
843 Handle value = java_lang_String::create_from_str(string_value, CHECK);
844 java_mirror->obj_field_put(fd.offset(), value());
845 } else if (field_signature[0] == 'L') {
846 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
847 KlassHandle kelem = resolve_klass(field_signature, CHECK);
848 oop value = InstanceKlass::cast(kelem())->allocate_instance(CHECK);
849 java_mirror->obj_field_put(fd.offset(), value);
850 } else {
851 report_error("unhandled staticfield");
852 }
853 }
854 }
855
856 #if INCLUDE_JVMTI
857 void process_JvmtiExport(TRAPS) {
858 const char* field = parse_string();
859 bool value = parse_int("JvmtiExport flag") != 0;
860 if (strcmp(field, "can_access_local_variables") == 0) {
861 JvmtiExport::set_can_access_local_variables(value);
862 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
863 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
864 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
865 JvmtiExport::set_can_post_on_exceptions(value);
866 } else {
867 report_error("Unrecognized JvmtiExport directive");
868 }
869 }
870 #endif // INCLUDE_JVMTI
871
872 // Create and initialize a record for a ciMethod
873 ciMethodRecord* new_ciMethod(Method* method) {
874 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
875 rec->_klass_name = method->method_holder()->name()->as_utf8();
876 rec->_method_name = method->name()->as_utf8();
877 rec->_signature = method->signature()->as_utf8();
878 _ci_method_records.append(rec);
879 return rec;
880 }
881
882 // Lookup data for a ciMethod
883 ciMethodRecord* find_ciMethodRecord(Method* method) {
884 const char* klass_name = method->method_holder()->name()->as_utf8();
885 const char* method_name = method->name()->as_utf8();
886 const char* signature = method->signature()->as_utf8();
887 for (int i = 0; i < _ci_method_records.length(); i++) {
888 ciMethodRecord* rec = _ci_method_records.at(i);
889 if (strcmp(rec->_klass_name, klass_name) == 0 &&
890 strcmp(rec->_method_name, method_name) == 0 &&
891 strcmp(rec->_signature, signature) == 0) {
892 return rec;
893 }
894 }
895 return NULL;
896 }
897
898 // Create and initialize a record for a ciMethodData
899 ciMethodDataRecord* new_ciMethodData(Method* method) {
900 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
901 rec->_klass_name = method->method_holder()->name()->as_utf8();
902 rec->_method_name = method->name()->as_utf8();
903 rec->_signature = method->signature()->as_utf8();
904 _ci_method_data_records.append(rec);
905 return rec;
906 }
907
908 // Lookup data for a ciMethodData
909 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
910 const char* klass_name = method->method_holder()->name()->as_utf8();
911 const char* method_name = method->name()->as_utf8();
912 const char* signature = method->signature()->as_utf8();
913 for (int i = 0; i < _ci_method_data_records.length(); i++) {
914 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
915 if (strcmp(rec->_klass_name, klass_name) == 0 &&
916 strcmp(rec->_method_name, method_name) == 0 &&
917 strcmp(rec->_signature, signature) == 0) {
918 return rec;
919 }
920 }
921 return NULL;
922 }
923
924 // Create and initialize a record for a ciInlineRecord
925 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) {
926 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
927 rec->_klass_name = method->method_holder()->name()->as_utf8();
928 rec->_method_name = method->name()->as_utf8();
929 rec->_signature = method->signature()->as_utf8();
930 rec->_inline_bci = bci;
931 rec->_inline_depth = depth;
932 _ci_inline_records->append(rec);
933 return rec;
934 }
935
936 // Lookup inlining data for a ciMethod
937 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
938 if (_ci_inline_records != NULL) {
939 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
940 }
941 return NULL;
942 }
943
944 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
945 Method* method, int bci, int depth) {
946 if (records != NULL) {
947 const char* klass_name = method->method_holder()->name()->as_utf8();
948 const char* method_name = method->name()->as_utf8();
949 const char* signature = method->signature()->as_utf8();
950 for (int i = 0; i < records->length(); i++) {
951 ciInlineRecord* rec = records->at(i);
952 if ((rec->_inline_bci == bci) &&
953 (rec->_inline_depth == depth) &&
954 (strcmp(rec->_klass_name, klass_name) == 0) &&
955 (strcmp(rec->_method_name, method_name) == 0) &&
956 (strcmp(rec->_signature, signature) == 0)) {
957 return rec;
958 }
959 }
960 }
961 return NULL;
962 }
963
964 const char* error_message() {
965 return _error_message;
966 }
967
968 void reset() {
969 _error_message = NULL;
970 _ci_method_records.clear();
971 _ci_method_data_records.clear();
972 }
973
974 // Take an ascii string contain \u#### escapes and convert it to utf8
975 // in place.
976 static void unescape_string(char* value) {
977 char* from = value;
978 char* to = value;
979 while (*from != '\0') {
980 if (*from != '\\') {
981 *from++ = *to++;
982 } else {
983 switch (from[1]) {
984 case 'u': {
985 from += 2;
986 jchar value=0;
987 for (int i=0; i<4; i++) {
988 char c = *from++;
989 switch (c) {
990 case '0': case '1': case '2': case '3': case '4':
991 case '5': case '6': case '7': case '8': case '9':
992 value = (value << 4) + c - '0';
993 break;
994 case 'a': case 'b': case 'c':
995 case 'd': case 'e': case 'f':
996 value = (value << 4) + 10 + c - 'a';
997 break;
998 case 'A': case 'B': case 'C':
999 case 'D': case 'E': case 'F':
1000 value = (value << 4) + 10 + c - 'A';
1001 break;
1002 default:
1003 ShouldNotReachHere();
1004 }
1005 }
1006 UNICODE::convert_to_utf8(&value, 1, to);
1007 to++;
1008 break;
1009 }
1010 case 't': *to++ = '\t'; from += 2; break;
1011 case 'n': *to++ = '\n'; from += 2; break;
1012 case 'r': *to++ = '\r'; from += 2; break;
1013 case 'f': *to++ = '\f'; from += 2; break;
1014 default:
1015 ShouldNotReachHere();
1016 }
1017 }
1018 }
1019 *from = *to;
1020 }
1021 };
1022
1023 void ciReplay::replay(TRAPS) {
1024 int exit_code = replay_impl(THREAD);
1025
1026 Threads::destroy_vm();
1027
1028 vm_exit(exit_code);
1029 }
1030
1031 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1032 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1033 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1034 return NULL;
1035 }
1036
1037 VM_ENTRY_MARK;
1038 // Load and parse the replay data
1039 CompileReplay rp(InlineDataFile, THREAD);
1040 if (!rp.can_replay()) {
1041 tty->print_cr("ciReplay: !rp.can_replay()");
1042 return NULL;
1043 }
1044 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1045 if (HAS_PENDING_EXCEPTION) {
1046 Handle throwable(THREAD, PENDING_EXCEPTION);
1047 CLEAR_PENDING_EXCEPTION;
1048 java_lang_Throwable::print_stack_trace(throwable, tty);
1049 tty->cr();
1050 return NULL;
1051 }
1052
1053 if (rp.had_error()) {
1054 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1055 return NULL;
1056 }
1057 return data;
1058 }
1059
1060 int ciReplay::replay_impl(TRAPS) {
1061 HandleMark hm;
1062 ResourceMark rm;
1063
1064 if (ReplaySuppressInitializers > 2) {
1065 // ReplaySuppressInitializers > 2 means that we want to allow
1066 // normal VM bootstrap but once we get into the replay itself
1067 // don't allow any intializers to be run.
1068 ReplaySuppressInitializers = 1;
1069 }
1070
1071 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1072 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1073 return 1;
1074 }
1075
1076 // Load and parse the replay data
1077 CompileReplay rp(ReplayDataFile, THREAD);
1078 int exit_code = 0;
1079 if (rp.can_replay()) {
1080 rp.process(THREAD);
1081 } else {
1082 exit_code = 1;
1083 return exit_code;
1084 }
1085
1086 if (HAS_PENDING_EXCEPTION) {
1087 Handle throwable(THREAD, PENDING_EXCEPTION);
1088 CLEAR_PENDING_EXCEPTION;
1089 java_lang_Throwable::print_stack_trace(throwable, tty);
1090 tty->cr();
1091 exit_code = 2;
1092 }
1093
1094 if (rp.had_error()) {
1095 tty->print_cr("Failed on %s", rp.error_message());
1096 exit_code = 1;
1097 }
1098 return exit_code;
1099 }
1100
1101 void ciReplay::initialize(ciMethodData* m) {
1102 if (replay_state == NULL) {
1103 return;
1104 }
1105
1106 ASSERT_IN_VM;
1107 ResourceMark rm;
1108
1109 Method* method = m->get_MethodData()->method();
1110 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1111 if (rec == NULL) {
1112 // This indicates some mismatch with the original environment and
1113 // the replay environment though it's not always enough to
1114 // interfere with reproducing a bug
1115 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1116 method->print_name(tty);
1117 tty->cr();
1118 } else {
1119 m->_state = rec->_state;
1120 m->_current_mileage = rec->_current_mileage;
1121 if (rec->_data_length != 0) {
1122 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1123 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1124
1125 // Write the correct ciObjects back into the profile data
1126 ciEnv* env = ciEnv::current();
1127 for (int i = 0; i < rec->_classes_length; i++) {
1128 Klass *k = rec->_classes[i];
1129 // In case this class pointer is is tagged, preserve the tag
1130 // bits
1131 rec->_data[rec->_classes_offsets[i]] =
1132 ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1133 }
1134 for (int i = 0; i < rec->_methods_length; i++) {
1135 Method *m = rec->_methods[i];
1136 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1137 env->get_metadata(m);
1138 }
1139 // Copy the updated profile data into place as intptr_ts
1140 #ifdef _LP64
1141 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1142 #else
1143 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1144 #endif
1145 }
1146
1147 // copy in the original header
1148 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1149 }
1150 }
1151
1152
1153 bool ciReplay::should_not_inline(ciMethod* method) {
1154 if (replay_state == NULL) {
1155 return false;
1156 }
1157 VM_ENTRY_MARK;
1158 // ciMethod without a record shouldn't be inlined.
1159 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1160 }
1161
1162 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1163 if (data != NULL) {
1164 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1165 VM_ENTRY_MARK;
1166 // Inline record are ordered by bci and depth.
1167 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL;
1168 } else if (replay_state != NULL) {
1169 VM_ENTRY_MARK;
1170 // Inline record are ordered by bci and depth.
1171 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL;
1172 }
1173 return false;
1174 }
1175
1176 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1177 if (data != NULL) {
1178 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1179 VM_ENTRY_MARK;
1180 // Inline record are ordered by bci and depth.
1181 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1182 } else if (replay_state != NULL) {
1183 VM_ENTRY_MARK;
1184 // Inline record are ordered by bci and depth.
1185 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1186 }
1187 return false;
1188 }
1189
1190 void ciReplay::initialize(ciMethod* m) {
1191 if (replay_state == NULL) {
1192 return;
1193 }
1194
1195 ASSERT_IN_VM;
1196 ResourceMark rm;
1197
1198 Method* method = m->get_Method();
1199 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1200 if (rec == NULL) {
1201 // This indicates some mismatch with the original environment and
1202 // the replay environment though it's not always enough to
1203 // interfere with reproducing a bug
1204 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1205 method->print_name(tty);
1206 tty->cr();
1207 } else {
1208 EXCEPTION_CONTEXT;
1209 // m->_instructions_size = rec->_instructions_size;
1210 m->_instructions_size = -1;
1211 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1212 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1213 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1214 guarantee(mcs != NULL, "method counters allocation failed");
1215 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1216 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1217 }
1218 }
1219
1220 bool ciReplay::is_loaded(Method* method) {
1221 if (replay_state == NULL) {
1222 return true;
1223 }
1224
1225 ASSERT_IN_VM;
1226 ResourceMark rm;
1227
1228 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1229 return rec != NULL;
1230 }
1231 #endif // PRODUCT