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 comp_level = CompLevel_full_optimization;
493 }
494 if (!is_valid_comp_level(comp_level)) {
495 return;
496 }
497 if (_imethod != NULL) {
498 // Replay Inlining
499 if (entry_bci != _entry_bci || comp_level != _comp_level) {
500 return;
501 }
502 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
503 const char* imethod_name = _imethod->name()->as_utf8();
504 const char* isignature = _imethod->signature()->as_utf8();
505 const char* klass_name = method->method_holder()->name()->as_utf8();
506 const char* method_name = method->name()->as_utf8();
507 const char* signature = method->signature()->as_utf8();
508 if (strcmp(iklass_name, klass_name) != 0 ||
509 strcmp(imethod_name, method_name) != 0 ||
510 strcmp(isignature, signature) != 0) {
511 return;
512 }
513 }
514 int inline_count = 0;
515 if (parse_tag_and_count("inline", inline_count)) {
516 // Record inlining data
517 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
518 for (int i = 0; i < inline_count; i++) {
519 int depth = parse_int("inline_depth");
520 int bci = parse_int("inline_bci");
521 if (had_error()) {
522 break;
523 }
524 Method* inl_method = parse_method(CHECK);
525 if (had_error()) {
526 break;
527 }
528 new_ciInlineRecord(inl_method, bci, depth);
529 }
530 }
531 if (_imethod != NULL) {
532 return; // Replay Inlining
533 }
534 InstanceKlass* ik = method->method_holder();
535 ik->initialize(THREAD);
536 if (HAS_PENDING_EXCEPTION) {
537 oop throwable = PENDING_EXCEPTION;
538 java_lang_Throwable::print(throwable, tty);
539 tty->cr();
540 if (ReplayIgnoreInitErrors) {
541 CLEAR_PENDING_EXCEPTION;
542 ik->set_init_state(InstanceKlass::fully_initialized);
543 } else {
544 return;
545 }
546 }
547 // Make sure the existence of a prior compile doesn't stop this one
548 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
549 if (nm != NULL) {
550 nm->make_not_entrant();
551 }
552 replay_state = this;
553 CompileBroker::compile_method(method, entry_bci, comp_level,
554 methodHandle(), 0, "replay", THREAD);
555 replay_state = NULL;
556 reset();
557 }
558
559 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
560 //
561 //
562 void process_ciMethod(TRAPS) {
563 Method* method = parse_method(CHECK);
564 if (had_error()) return;
565 ciMethodRecord* rec = new_ciMethod(method);
566 rec->_invocation_counter = parse_int("invocation_counter");
567 rec->_backedge_counter = parse_int("backedge_counter");
568 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
569 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
570 rec->_instructions_size = parse_int("instructions_size");
571 }
572
573 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> # ... methods <length>
574 void process_ciMethodData(TRAPS) {
575 Method* method = parse_method(CHECK);
576 if (had_error()) return;
577 /* just copied from Method, to build interpret data*/
578
579 // To be properly initialized, some profiling in the MDO needs the
580 // method to be rewritten (number of arguments at a call for
581 // instance)
582 method->method_holder()->link_class(CHECK);
583 // methodOopDesc::build_interpreter_method_data(method, CHECK);
584 {
585 // Grab a lock here to prevent multiple
586 // MethodData*s from being created.
587 MutexLocker ml(MethodData_lock, THREAD);
588 if (method->method_data() == NULL) {
589 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
590 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
591 method->set_method_data(method_data);
592 }
593 }
594
595 // collect and record all the needed information for later
596 ciMethodDataRecord* rec = new_ciMethodData(method);
597 rec->_state = parse_int("state");
598 rec->_current_mileage = parse_int("current_mileage");
599
600 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
601 if (rec->_orig_data == NULL) {
602 return;
603 }
604 rec->_data = parse_intptr_data("data", rec->_data_length);
605 if (rec->_data == NULL) {
606 return;
607 }
608 if (!parse_tag_and_count("oops", rec->_classes_length)) {
609 return;
610 }
611 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
612 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
613 for (int i = 0; i < rec->_classes_length; i++) {
614 int offset = parse_int("offset");
615 if (had_error()) {
616 return;
617 }
618 Klass* k = parse_klass(CHECK);
619 rec->_classes_offsets[i] = offset;
620 rec->_classes[i] = k;
621 }
622
623 if (!parse_tag_and_count("methods", rec->_methods_length)) {
624 return;
625 }
626 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
627 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
628 for (int i = 0; i < rec->_methods_length; i++) {
629 int offset = parse_int("offset");
630 if (had_error()) {
631 return;
632 }
633 Method* m = parse_method(CHECK);
634 rec->_methods_offsets[i] = offset;
635 rec->_methods[i] = m;
636 }
637 }
638
639 // instanceKlass <name>
640 //
641 // Loads and initializes the klass 'name'. This can be used to
642 // create particular class loading environments
643 void process_instanceKlass(TRAPS) {
644 // just load the referenced class
645 Klass* k = parse_klass(CHECK);
646 }
647
648 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
649 //
650 // Load the klass 'name' and link or initialize it. Verify that the
651 // constant pool is the same length as 'length' and make sure the
652 // constant pool tags are in the same state.
653 void process_ciInstanceKlass(TRAPS) {
654 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
655 int is_linked = parse_int("is_linked");
656 int is_initialized = parse_int("is_initialized");
657 int length = parse_int("length");
658 if (is_initialized) {
659 k->initialize(THREAD);
660 if (HAS_PENDING_EXCEPTION) {
661 oop throwable = PENDING_EXCEPTION;
662 java_lang_Throwable::print(throwable, tty);
663 tty->cr();
664 if (ReplayIgnoreInitErrors) {
665 CLEAR_PENDING_EXCEPTION;
666 k->set_init_state(InstanceKlass::fully_initialized);
667 } else {
668 return;
669 }
670 }
671 } else if (is_linked) {
672 k->link_class(CHECK);
673 }
674 ConstantPool* cp = k->constants();
675 if (length != cp->length()) {
676 report_error("constant pool length mismatch: wrong class files?");
677 return;
678 }
679
680 int parsed_two_word = 0;
681 for (int i = 1; i < length; i++) {
682 int tag = parse_int("tag");
683 if (had_error()) {
684 return;
685 }
686 switch (cp->tag_at(i).value()) {
687 case JVM_CONSTANT_UnresolvedClass: {
688 if (tag == JVM_CONSTANT_Class) {
689 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
690 Klass* k = cp->klass_at(i, CHECK);
691 }
692 break;
693 }
694 case JVM_CONSTANT_Long:
695 case JVM_CONSTANT_Double:
696 parsed_two_word = i + 1;
697
698 case JVM_CONSTANT_ClassIndex:
699 case JVM_CONSTANT_StringIndex:
700 case JVM_CONSTANT_String:
701 case JVM_CONSTANT_UnresolvedClassInError:
702 case JVM_CONSTANT_Fieldref:
703 case JVM_CONSTANT_Methodref:
704 case JVM_CONSTANT_InterfaceMethodref:
705 case JVM_CONSTANT_NameAndType:
706 case JVM_CONSTANT_Utf8:
707 case JVM_CONSTANT_Integer:
708 case JVM_CONSTANT_Float:
709 case JVM_CONSTANT_MethodHandle:
710 case JVM_CONSTANT_MethodType:
711 case JVM_CONSTANT_InvokeDynamic:
712 if (tag != cp->tag_at(i).value()) {
713 report_error("tag mismatch: wrong class files?");
714 return;
715 }
716 break;
717
718 case JVM_CONSTANT_Class:
719 if (tag == JVM_CONSTANT_Class) {
720 } else if (tag == JVM_CONSTANT_UnresolvedClass) {
721 tty->print_cr("Warning: entry was unresolved in the replay data");
722 } else {
723 report_error("Unexpected tag");
724 return;
725 }
726 break;
727
728 case 0:
729 if (parsed_two_word == i) continue;
730
731 default:
732 fatal("Unexpected tag: %d", cp->tag_at(i).value());
733 break;
734 }
735
736 }
737 }
738
739 // Initialize a class and fill in the value for a static field.
740 // This is useful when the compile was dependent on the value of
741 // static fields but it's impossible to properly rerun the static
742 // initiailizer.
743 void process_staticfield(TRAPS) {
744 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
745
746 if (ReplaySuppressInitializers == 0 ||
747 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
748 return;
749 }
750
751 assert(k->is_initialized(), "must be");
752
753 const char* field_name = parse_escaped_string();;
754 const char* field_signature = parse_string();
755 fieldDescriptor fd;
756 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
757 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
758 if (!k->find_local_field(name, sig, &fd) ||
759 !fd.is_static() ||
760 fd.has_initial_value()) {
761 report_error(field_name);
762 return;
763 }
764
765 oop java_mirror = k->java_mirror();
766 if (field_signature[0] == '[') {
767 int length = parse_int("array length");
768 oop value = NULL;
769
770 if (field_signature[1] == '[') {
771 // multi dimensional array
772 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
773 int rank = 0;
774 while (field_signature[rank] == '[') {
775 rank++;
776 }
777 int* dims = NEW_RESOURCE_ARRAY(int, rank);
778 dims[0] = length;
779 for (int i = 1; i < rank; i++) {
780 dims[i] = 1; // These aren't relevant to the compiler
781 }
782 value = kelem->multi_allocate(rank, dims, CHECK);
783 } else {
784 if (strcmp(field_signature, "[B") == 0) {
785 value = oopFactory::new_byteArray(length, CHECK);
786 } else if (strcmp(field_signature, "[Z") == 0) {
787 value = oopFactory::new_boolArray(length, CHECK);
788 } else if (strcmp(field_signature, "[C") == 0) {
789 value = oopFactory::new_charArray(length, CHECK);
790 } else if (strcmp(field_signature, "[S") == 0) {
791 value = oopFactory::new_shortArray(length, CHECK);
792 } else if (strcmp(field_signature, "[F") == 0) {
793 value = oopFactory::new_singleArray(length, CHECK);
794 } else if (strcmp(field_signature, "[D") == 0) {
795 value = oopFactory::new_doubleArray(length, CHECK);
796 } else if (strcmp(field_signature, "[I") == 0) {
797 value = oopFactory::new_intArray(length, CHECK);
798 } else if (strcmp(field_signature, "[J") == 0) {
799 value = oopFactory::new_longArray(length, CHECK);
800 } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
801 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
802 value = oopFactory::new_objArray(kelem(), length, CHECK);
803 } else {
804 report_error("unhandled array staticfield");
805 }
806 }
807 java_mirror->obj_field_put(fd.offset(), value);
808 } else {
809 const char* string_value = parse_escaped_string();
810 if (strcmp(field_signature, "I") == 0) {
811 int value = atoi(string_value);
812 java_mirror->int_field_put(fd.offset(), value);
813 } else if (strcmp(field_signature, "B") == 0) {
814 int value = atoi(string_value);
815 java_mirror->byte_field_put(fd.offset(), value);
816 } else if (strcmp(field_signature, "C") == 0) {
817 int value = atoi(string_value);
818 java_mirror->char_field_put(fd.offset(), value);
819 } else if (strcmp(field_signature, "S") == 0) {
820 int value = atoi(string_value);
821 java_mirror->short_field_put(fd.offset(), value);
822 } else if (strcmp(field_signature, "Z") == 0) {
823 int value = atol(string_value);
824 java_mirror->bool_field_put(fd.offset(), value);
825 } else if (strcmp(field_signature, "J") == 0) {
826 jlong value;
827 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
828 fprintf(stderr, "Error parsing long: %s\n", string_value);
829 return;
830 }
831 java_mirror->long_field_put(fd.offset(), value);
832 } else if (strcmp(field_signature, "F") == 0) {
833 float value = atof(string_value);
834 java_mirror->float_field_put(fd.offset(), value);
835 } else if (strcmp(field_signature, "D") == 0) {
836 double value = atof(string_value);
837 java_mirror->double_field_put(fd.offset(), value);
838 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
839 Handle value = java_lang_String::create_from_str(string_value, CHECK);
840 java_mirror->obj_field_put(fd.offset(), value());
841 } else if (field_signature[0] == 'L') {
842 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
843 KlassHandle kelem = resolve_klass(field_signature, CHECK);
844 oop value = InstanceKlass::cast(kelem())->allocate_instance(CHECK);
845 java_mirror->obj_field_put(fd.offset(), value);
846 } else {
847 report_error("unhandled staticfield");
848 }
849 }
850 }
851
852 #if INCLUDE_JVMTI
853 void process_JvmtiExport(TRAPS) {
854 const char* field = parse_string();
855 bool value = parse_int("JvmtiExport flag") != 0;
856 if (strcmp(field, "can_access_local_variables") == 0) {
857 JvmtiExport::set_can_access_local_variables(value);
858 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
859 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
860 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
861 JvmtiExport::set_can_post_on_exceptions(value);
862 } else {
863 report_error("Unrecognized JvmtiExport directive");
864 }
865 }
866 #endif // INCLUDE_JVMTI
867
868 // Create and initialize a record for a ciMethod
869 ciMethodRecord* new_ciMethod(Method* method) {
870 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
871 rec->_klass_name = method->method_holder()->name()->as_utf8();
872 rec->_method_name = method->name()->as_utf8();
873 rec->_signature = method->signature()->as_utf8();
874 _ci_method_records.append(rec);
875 return rec;
876 }
877
878 // Lookup data for a ciMethod
879 ciMethodRecord* find_ciMethodRecord(Method* method) {
880 const char* klass_name = method->method_holder()->name()->as_utf8();
881 const char* method_name = method->name()->as_utf8();
882 const char* signature = method->signature()->as_utf8();
883 for (int i = 0; i < _ci_method_records.length(); i++) {
884 ciMethodRecord* rec = _ci_method_records.at(i);
885 if (strcmp(rec->_klass_name, klass_name) == 0 &&
886 strcmp(rec->_method_name, method_name) == 0 &&
887 strcmp(rec->_signature, signature) == 0) {
888 return rec;
889 }
890 }
891 return NULL;
892 }
893
894 // Create and initialize a record for a ciMethodData
895 ciMethodDataRecord* new_ciMethodData(Method* method) {
896 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
897 rec->_klass_name = method->method_holder()->name()->as_utf8();
898 rec->_method_name = method->name()->as_utf8();
899 rec->_signature = method->signature()->as_utf8();
900 _ci_method_data_records.append(rec);
901 return rec;
902 }
903
904 // Lookup data for a ciMethodData
905 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
906 const char* klass_name = method->method_holder()->name()->as_utf8();
907 const char* method_name = method->name()->as_utf8();
908 const char* signature = method->signature()->as_utf8();
909 for (int i = 0; i < _ci_method_data_records.length(); i++) {
910 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
911 if (strcmp(rec->_klass_name, klass_name) == 0 &&
912 strcmp(rec->_method_name, method_name) == 0 &&
913 strcmp(rec->_signature, signature) == 0) {
914 return rec;
915 }
916 }
917 return NULL;
918 }
919
920 // Create and initialize a record for a ciInlineRecord
921 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) {
922 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
923 rec->_klass_name = method->method_holder()->name()->as_utf8();
924 rec->_method_name = method->name()->as_utf8();
925 rec->_signature = method->signature()->as_utf8();
926 rec->_inline_bci = bci;
927 rec->_inline_depth = depth;
928 _ci_inline_records->append(rec);
929 return rec;
930 }
931
932 // Lookup inlining data for a ciMethod
933 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
934 if (_ci_inline_records != NULL) {
935 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
936 }
937 return NULL;
938 }
939
940 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
941 Method* method, int bci, int depth) {
942 if (records != NULL) {
943 const char* klass_name = method->method_holder()->name()->as_utf8();
944 const char* method_name = method->name()->as_utf8();
945 const char* signature = method->signature()->as_utf8();
946 for (int i = 0; i < records->length(); i++) {
947 ciInlineRecord* rec = records->at(i);
948 if ((rec->_inline_bci == bci) &&
949 (rec->_inline_depth == depth) &&
950 (strcmp(rec->_klass_name, klass_name) == 0) &&
951 (strcmp(rec->_method_name, method_name) == 0) &&
952 (strcmp(rec->_signature, signature) == 0)) {
953 return rec;
954 }
955 }
956 }
957 return NULL;
958 }
959
960 const char* error_message() {
961 return _error_message;
962 }
963
964 void reset() {
965 _error_message = NULL;
966 _ci_method_records.clear();
967 _ci_method_data_records.clear();
968 }
969
970 // Take an ascii string contain \u#### escapes and convert it to utf8
971 // in place.
972 static void unescape_string(char* value) {
973 char* from = value;
974 char* to = value;
975 while (*from != '\0') {
976 if (*from != '\\') {
977 *from++ = *to++;
978 } else {
979 switch (from[1]) {
980 case 'u': {
981 from += 2;
982 jchar value=0;
983 for (int i=0; i<4; i++) {
984 char c = *from++;
985 switch (c) {
986 case '0': case '1': case '2': case '3': case '4':
987 case '5': case '6': case '7': case '8': case '9':
988 value = (value << 4) + c - '0';
989 break;
990 case 'a': case 'b': case 'c':
991 case 'd': case 'e': case 'f':
992 value = (value << 4) + 10 + c - 'a';
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 default:
999 ShouldNotReachHere();
1000 }
1001 }
1002 UNICODE::convert_to_utf8(&value, 1, to);
1003 to++;
1004 break;
1005 }
1006 case 't': *to++ = '\t'; from += 2; break;
1007 case 'n': *to++ = '\n'; from += 2; break;
1008 case 'r': *to++ = '\r'; from += 2; break;
1009 case 'f': *to++ = '\f'; from += 2; break;
1010 default:
1011 ShouldNotReachHere();
1012 }
1013 }
1014 }
1015 *from = *to;
1016 }
1017 };
1018
1019 void ciReplay::replay(TRAPS) {
1020 int exit_code = replay_impl(THREAD);
1021
1022 Threads::destroy_vm();
1023
1024 vm_exit(exit_code);
1025 }
1026
1027 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1028 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1029 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1030 return NULL;
1031 }
1032
1033 VM_ENTRY_MARK;
1034 // Load and parse the replay data
1035 CompileReplay rp(InlineDataFile, THREAD);
1036 if (!rp.can_replay()) {
1037 tty->print_cr("ciReplay: !rp.can_replay()");
1038 return NULL;
1039 }
1040 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1041 if (HAS_PENDING_EXCEPTION) {
1042 Handle throwable(THREAD, PENDING_EXCEPTION);
1043 CLEAR_PENDING_EXCEPTION;
1044 java_lang_Throwable::print_stack_trace(throwable, tty);
1045 tty->cr();
1046 return NULL;
1047 }
1048
1049 if (rp.had_error()) {
1050 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1051 return NULL;
1052 }
1053 return data;
1054 }
1055
1056 int ciReplay::replay_impl(TRAPS) {
1057 HandleMark hm;
1058 ResourceMark rm;
1059 // Make sure we don't run with background compilation
1060 BackgroundCompilation = false;
1061
1062 if (ReplaySuppressInitializers > 2) {
1063 // ReplaySuppressInitializers > 2 means that we want to allow
1064 // normal VM bootstrap but once we get into the replay itself
1065 // don't allow any intializers to be run.
1066 ReplaySuppressInitializers = 1;
1067 }
1068
1069 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1070 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1071 return 1;
1072 }
1073
1074 // Load and parse the replay data
1075 CompileReplay rp(ReplayDataFile, THREAD);
1076 int exit_code = 0;
1077 if (rp.can_replay()) {
1078 rp.process(THREAD);
1079 } else {
1080 exit_code = 1;
1081 return exit_code;
1082 }
1083
1084 if (HAS_PENDING_EXCEPTION) {
1085 Handle throwable(THREAD, PENDING_EXCEPTION);
1086 CLEAR_PENDING_EXCEPTION;
1087 java_lang_Throwable::print_stack_trace(throwable, tty);
1088 tty->cr();
1089 exit_code = 2;
1090 }
1091
1092 if (rp.had_error()) {
1093 tty->print_cr("Failed on %s", rp.error_message());
1094 exit_code = 1;
1095 }
1096 return exit_code;
1097 }
1098
1099 void ciReplay::initialize(ciMethodData* m) {
1100 if (replay_state == NULL) {
1101 return;
1102 }
1103
1104 ASSERT_IN_VM;
1105 ResourceMark rm;
1106
1107 Method* method = m->get_MethodData()->method();
1108 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1109 if (rec == NULL) {
1110 // This indicates some mismatch with the original environment and
1111 // the replay environment though it's not always enough to
1112 // interfere with reproducing a bug
1113 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1114 method->print_name(tty);
1115 tty->cr();
1116 } else {
1117 m->_state = rec->_state;
1118 m->_current_mileage = rec->_current_mileage;
1119 if (rec->_data_length != 0) {
1120 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
1121 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1122
1123 // Write the correct ciObjects back into the profile data
1124 ciEnv* env = ciEnv::current();
1125 for (int i = 0; i < rec->_classes_length; i++) {
1126 Klass *k = rec->_classes[i];
1127 // In case this class pointer is is tagged, preserve the tag
1128 // bits
1129 rec->_data[rec->_classes_offsets[i]] =
1130 ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
1131 }
1132 for (int i = 0; i < rec->_methods_length; i++) {
1133 Method *m = rec->_methods[i];
1134 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
1135 env->get_metadata(m);
1136 }
1137 // Copy the updated profile data into place as intptr_ts
1138 #ifdef _LP64
1139 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1140 #else
1141 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1142 #endif
1143 }
1144
1145 // copy in the original header
1146 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1147 }
1148 }
1149
1150
1151 bool ciReplay::should_not_inline(ciMethod* method) {
1152 if (replay_state == NULL) {
1153 return false;
1154 }
1155 VM_ENTRY_MARK;
1156 // ciMethod without a record shouldn't be inlined.
1157 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1158 }
1159
1160 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1161 if (data != NULL) {
1162 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1163 VM_ENTRY_MARK;
1164 // Inline record are ordered by bci and depth.
1165 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL;
1166 } else if (replay_state != NULL) {
1167 VM_ENTRY_MARK;
1168 // Inline record are ordered by bci and depth.
1169 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL;
1170 }
1171 return false;
1172 }
1173
1174 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1175 if (data != NULL) {
1176 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1177 VM_ENTRY_MARK;
1178 // Inline record are ordered by bci and depth.
1179 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1180 } else if (replay_state != NULL) {
1181 VM_ENTRY_MARK;
1182 // Inline record are ordered by bci and depth.
1183 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1184 }
1185 return false;
1186 }
1187
1188 void ciReplay::initialize(ciMethod* m) {
1189 if (replay_state == NULL) {
1190 return;
1191 }
1192
1193 ASSERT_IN_VM;
1194 ResourceMark rm;
1195
1196 Method* method = m->get_Method();
1197 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1198 if (rec == NULL) {
1199 // This indicates some mismatch with the original environment and
1200 // the replay environment though it's not always enough to
1201 // interfere with reproducing a bug
1202 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1203 method->print_name(tty);
1204 tty->cr();
1205 } else {
1206 EXCEPTION_CONTEXT;
1207 // m->_instructions_size = rec->_instructions_size;
1208 m->_instructions_size = -1;
1209 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1210 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1211 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1212 guarantee(mcs != NULL, "method counters allocation failed");
1213 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1214 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1215 }
1216 }
1217
1218 bool ciReplay::is_loaded(Method* method) {
1219 if (replay_state == NULL) {
1220 return true;
1221 }
1222
1223 ASSERT_IN_VM;
1224 ResourceMark rm;
1225
1226 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1227 return rec != NULL;
1228 }
1229 #endif // PRODUCT