1 /* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #include "precompiled.hpp"
25 #include "ci/ciMethodData.hpp"
26 #include "ci/ciReplay.hpp"
27 #include "ci/ciUtilities.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "memory/allocation.inline.hpp"
30 #include "memory/oopFactory.hpp"
31 #include "memory/resourceArea.hpp"
32 #include "utilities/copy.hpp"
33 #include "utilities/macros.hpp"
34
35 #ifndef PRODUCT
36
37 // ciReplay
38
39 typedef struct _ciMethodDataRecord {
40 const char* klass;
41 const char* method;
42 const char* signature;
43 int state;
44 int current_mileage;
45 intptr_t* data;
46 int data_length;
47 char* orig_data;
48 int orig_data_length;
49 int oops_length;
50 jobject* oops_handles;
51 int* oops_offsets;
52 } ciMethodDataRecord;
53
54 typedef struct _ciMethodRecord {
55 const char* klass;
56 const char* method;
57 const char* signature;
58 int instructions_size;
59 int interpreter_invocation_count;
60 int interpreter_throwout_count;
61 int invocation_counter;
62 int backedge_counter;
63 } ciMethodRecord;
64
65 class CompileReplay;
66 static CompileReplay* replay_state;
67
68 class CompileReplay : public StackObj {
69 private:
70 FILE* stream;
71 Thread* thread;
72 Handle protection_domain;
73 Handle loader;
74
75 GrowableArray<ciMethodRecord*> ci_method_records;
76 GrowableArray<ciMethodDataRecord*> ci_method_data_records;
77
78 const char* _error_message;
79
80 char* bufptr;
81 char* buffer;
82 int buffer_length;
83 int buffer_end;
84 int line_no;
85
86 public:
87 CompileReplay(const char* filename, TRAPS) {
88 thread = THREAD;
89 loader = Handle(thread, SystemDictionary::java_system_loader());
90 stream = fopen(filename, "rt");
91 if (stream == NULL) {
92 fprintf(stderr, "Can't open replay file %s\n", filename);
93 }
94 buffer_length = 32;
95 buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
96 _error_message = NULL;
97
98 test();
99 }
100
101 ~CompileReplay() {
102 if (stream != NULL) fclose(stream);
103 }
104
105 void test() {
106 strcpy(buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
107 bufptr = buffer;
108 assert(parse_int("test") == 1, "what");
109 assert(parse_int("test") == 2, "what");
110 assert(strcmp(parse_string(), "foo") == 0, "what");
111 assert(parse_int("test") == 4, "what");
112 assert(strcmp(parse_string(), "bar") == 0, "what");
113 assert(parse_intptr_t("test") == 9, "what");
114 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
115 }
116
117 bool had_error() {
118 return _error_message != NULL || thread->has_pending_exception();
119 }
120
121 bool can_replay() {
122 return !(stream == NULL || had_error());
123 }
124
125 void report_error(const char* msg) {
126 _error_message = msg;
127 // Restore the buffer contents for error reporting
128 for (int i = 0; i < buffer_end; i++) {
129 if (buffer[i] == '\0') buffer[i] = ' ';
130 }
131 }
132
133 int parse_int(const char* label) {
134 if (had_error()) {
135 return 0;
136 }
137
138 int v = 0;
139 int read;
140 if (sscanf(bufptr, "%i%n", &v, &read) != 1) {
141 report_error(label);
142 } else {
143 bufptr += read;
144 }
145 return v;
146 }
147
148 intptr_t parse_intptr_t(const char* label) {
149 if (had_error()) {
150 return 0;
151 }
152
153 intptr_t v = 0;
154 int read;
155 if (sscanf(bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
156 report_error(label);
157 } else {
158 bufptr += read;
159 }
160 return v;
161 }
162
163 void skip_ws() {
164 // Skip any leading whitespace
165 while (*bufptr == ' ' || *bufptr == '\t') {
166 bufptr++;
167 }
168 }
169
170
171 char* scan_and_terminate(char delim) {
172 char* str = bufptr;
173 while (*bufptr != delim && *bufptr != '\0') {
174 bufptr++;
175 }
176 if (*bufptr != '\0') {
177 *bufptr++ = '\0';
178 }
179 if (bufptr == str) {
180 // nothing here
181 return NULL;
182 }
183 return str;
184 }
185
186 char* parse_string() {
187 if (had_error()) return NULL;
188
189 skip_ws();
190 return scan_and_terminate(' ');
191 }
192
193 char* parse_quoted_string() {
194 if (had_error()) return NULL;
195
196 skip_ws();
197
198 if (*bufptr == '"') {
199 bufptr++;
200 return scan_and_terminate('"');
201 } else {
202 return scan_and_terminate(' ');
203 }
204 }
205
206 const char* parse_escaped_string() {
207 char* result = parse_quoted_string();
208 if (result != NULL) {
209 unescape_string(result);
210 }
211 return result;
212 }
213
214 // Look for the tag 'tag' followed by an
215 bool parse_tag_and_count(const char* tag, int& length) {
216 const char* t = parse_string();
217 if (t == NULL) {
218 return false;
219 }
220
221 if (strcmp(tag, t) != 0) {
222 report_error(tag);
223 return false;
224 }
225 length = parse_int("parse_tag_and_count");
226 return !had_error();
227 }
228
229 // Parse a sequence of raw data encoded as bytes and return the
230 // resulting data.
231 char* parse_data(const char* tag, int& length) {
232 if (!parse_tag_and_count(tag, length)) {
233 return NULL;
234 }
235
236 char * result = NEW_RESOURCE_ARRAY(char, length);
237 for (int i = 0; i < length; i++) {
238 int val = parse_int("data");
239 result[i] = val;
240 }
241 return result;
242 }
243
244 // Parse a standard chunk of data emitted as:
245 // 'tag' <length> # # ...
246 // Where each # is an intptr_t item
247 intptr_t* parse_intptr_data(const char* tag, int& length) {
248 if (!parse_tag_and_count(tag, length)) {
249 return NULL;
250 }
251
252 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
253 for (int i = 0; i < length; i++) {
254 skip_ws();
255 intptr_t val = parse_intptr_t("data");
256 result[i] = val;
257 }
258 return result;
259 }
260
261 // Parse a possibly quoted version of a symbol into a symbolOop
262 Symbol* parse_symbol(TRAPS) {
263 const char* str = parse_escaped_string();
264 if (str != NULL) {
265 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
266 return sym;
267 }
268 return NULL;
269 }
270
271 // Parse a valid klass name and look it up
272 Klass* parse_klass(TRAPS) {
273 const char* str = parse_escaped_string();
274 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
275 if (klass_name != NULL) {
276 Klass* k = SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, THREAD);
277 if (HAS_PENDING_EXCEPTION) {
278 oop throwable = PENDING_EXCEPTION;
279 java_lang_Throwable::print(throwable, tty);
280 tty->cr();
281 report_error(str);
282 return NULL;
283 }
284 return k;
285 }
286 return NULL;
287 }
288
289 // Lookup a klass
290 Klass* resolve_klass(const char* klass, TRAPS) {
291 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);
292 return SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, CHECK_NULL);
293 }
294
295 // Parse the standard tuple of <klass> <name> <signature>
296 Method* parse_method(TRAPS) {
297 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
298 Symbol* method_name = parse_symbol(CHECK_NULL);
299 Symbol* method_signature = parse_symbol(CHECK_NULL);
300 Method* m = k->find_method(method_name, method_signature);
301 if (m == NULL) {
302 report_error("can't find method");
303 }
304 return m;
305 }
306
307 // Process each line of the replay file executing each command until
308 // the file ends.
309 void process(TRAPS) {
310 line_no = 1;
311 int pos = 0;
312 int c = getc(stream);
313 while(c != EOF) {
314 if (pos + 1 >= buffer_length) {
315 int newl = buffer_length * 2;
316 char* newb = NEW_RESOURCE_ARRAY(char, newl);
317 memcpy(newb, buffer, pos);
318 buffer = newb;
319 buffer_length = newl;
320 }
321 if (c == '\n') {
322 // null terminate it, reset the pointer and process the line
323 buffer[pos] = '\0';
324 buffer_end = pos++;
325 bufptr = buffer;
326 process_command(CHECK);
327 if (had_error()) {
328 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
329 tty->print_cr("%s", buffer);
330 assert(false, "error");
331 return;
332 }
333 pos = 0;
334 buffer_end = 0;
335 line_no++;
336 } else if (c == '\r') {
337 // skip LF
338 } else {
339 buffer[pos++] = c;
340 }
341 c = getc(stream);
342 }
343 }
344
345 void process_command(TRAPS) {
346 char* cmd = parse_string();
347 if (cmd == NULL) {
348 return;
349 }
350 if (strcmp("#", cmd) == 0) {
351 // ignore
352 } else if (strcmp("compile", cmd) == 0) {
353 process_compile(CHECK);
354 } else if (strcmp("ciMethod", cmd) == 0) {
355 process_ciMethod(CHECK);
356 } else if (strcmp("ciMethodData", cmd) == 0) {
357 process_ciMethodData(CHECK);
358 } else if (strcmp("staticfield", cmd) == 0) {
359 process_staticfield(CHECK);
360 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
361 process_ciInstanceKlass(CHECK);
362 } else if (strcmp("instanceKlass", cmd) == 0) {
363 process_instanceKlass(CHECK);
364 #if INCLUDE_JVMTI
365 } else if (strcmp("JvmtiExport", cmd) == 0) {
366 process_JvmtiExport(CHECK);
367 #endif // INCLUDE_JVMTI
368 } else {
369 report_error("unknown command");
370 }
371 }
372
373 // validation of comp_level
374 bool is_valid_comp_level(int comp_level) {
375 const int msg_len = 256;
376 char* msg = NULL;
377 if (!is_compile(comp_level)) {
378 msg = NEW_RESOURCE_ARRAY(char, msg_len);
379 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
380 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) {
381 msg = NEW_RESOURCE_ARRAY(char, msg_len);
382 switch (comp_level) {
383 case CompLevel_simple:
384 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level);
385 break;
386 case CompLevel_full_optimization:
387 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level);
388 break;
389 default:
390 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level);
391 }
392 }
393 if (msg != NULL) {
394 report_error(msg);
395 return false;
396 }
397 return true;
398 }
399
400 // compile <klass> <name> <signature> <entry_bci> <comp_level>
401 void process_compile(TRAPS) {
402 // methodHandle method;
403 Method* method = parse_method(CHECK);
404 int entry_bci = parse_int("entry_bci");
405 const char* comp_level_label = "comp_level";
406 int comp_level = parse_int(comp_level_label);
407 // old version w/o comp_level
408 if (had_error() && (error_message() == comp_level_label)) {
409 comp_level = CompLevel_full_optimization;
410 }
411 if (!is_valid_comp_level(comp_level)) {
412 return;
413 }
414 Klass* k = method->method_holder();
415 ((InstanceKlass*)k)->initialize(THREAD);
416 if (HAS_PENDING_EXCEPTION) {
417 oop throwable = PENDING_EXCEPTION;
418 java_lang_Throwable::print(throwable, tty);
419 tty->cr();
420 if (ReplayIgnoreInitErrors) {
421 CLEAR_PENDING_EXCEPTION;
422 ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized);
423 } else {
424 return;
425 }
426 }
427 // Make sure the existence of a prior compile doesn't stop this one
428 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
429 if (nm != NULL) {
430 nm->make_not_entrant();
431 }
432 replay_state = this;
433 CompileBroker::compile_method(method, entry_bci, comp_level,
434 methodHandle(), 0, "replay", THREAD);
435 replay_state = NULL;
436 reset();
437 }
438
439 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
440 //
441 //
442 void process_ciMethod(TRAPS) {
443 Method* method = parse_method(CHECK);
444 ciMethodRecord* rec = new_ciMethod(method);
445 rec->invocation_counter = parse_int("invocation_counter");
446 rec->backedge_counter = parse_int("backedge_counter");
447 rec->interpreter_invocation_count = parse_int("interpreter_invocation_count");
448 rec->interpreter_throwout_count = parse_int("interpreter_throwout_count");
449 rec->instructions_size = parse_int("instructions_size");
450 }
451
452 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length>
453 void process_ciMethodData(TRAPS) {
454 Method* method = parse_method(CHECK);
455 /* jsut copied from Method, to build interpret data*/
456 if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) {
457 return;
458 }
459 // methodOopDesc::build_interpreter_method_data(method, CHECK);
460 {
461 // Grab a lock here to prevent multiple
462 // MethodData*s from being created.
463 MutexLocker ml(MethodData_lock, THREAD);
464 if (method->method_data() == NULL) {
465 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
466 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
467 method->set_method_data(method_data);
468 }
469 }
470
471 // collect and record all the needed information for later
472 ciMethodDataRecord* rec = new_ciMethodData(method);
473 rec->state = parse_int("state");
474 rec->current_mileage = parse_int("current_mileage");
475
476 rec->orig_data = parse_data("orig", rec->orig_data_length);
477 if (rec->orig_data == NULL) {
478 return;
479 }
480 rec->data = parse_intptr_data("data", rec->data_length);
481 if (rec->data == NULL) {
482 return;
483 }
484 if (!parse_tag_and_count("oops", rec->oops_length)) {
485 return;
486 }
487 rec->oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->oops_length);
488 rec->oops_offsets = NEW_RESOURCE_ARRAY(int, rec->oops_length);
489 for (int i = 0; i < rec->oops_length; i++) {
490 int offset = parse_int("offset");
491 if (had_error()) {
492 return;
493 }
494 Klass* k = parse_klass(CHECK);
495 rec->oops_offsets[i] = offset;
496 rec->oops_handles[i] = (jobject)(new KlassHandle(THREAD, k));
497 }
498 }
499
500 // instanceKlass <name>
501 //
502 // Loads and initializes the klass 'name'. This can be used to
503 // create particular class loading environments
504 void process_instanceKlass(TRAPS) {
505 // just load the referenced class
506 Klass* k = parse_klass(CHECK);
507 }
508
509 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
510 //
511 // Load the klass 'name' and link or initialize it. Verify that the
512 // constant pool is the same length as 'length' and make sure the
513 // constant pool tags are in the same state.
514 void process_ciInstanceKlass(TRAPS) {
515 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
516 int is_linked = parse_int("is_linked");
517 int is_initialized = parse_int("is_initialized");
518 int length = parse_int("length");
519 if (is_initialized) {
520 k->initialize(THREAD);
521 if (HAS_PENDING_EXCEPTION) {
522 oop throwable = PENDING_EXCEPTION;
523 java_lang_Throwable::print(throwable, tty);
524 tty->cr();
525 if (ReplayIgnoreInitErrors) {
526 CLEAR_PENDING_EXCEPTION;
527 k->set_init_state(InstanceKlass::fully_initialized);
528 } else {
529 return;
530 }
531 }
532 } else if (is_linked) {
533 k->link_class(CHECK);
534 }
535 ConstantPool* cp = k->constants();
536 if (length != cp->length()) {
537 report_error("constant pool length mismatch: wrong class files?");
538 return;
539 }
540
541 int parsed_two_word = 0;
542 for (int i = 1; i < length; i++) {
543 int tag = parse_int("tag");
544 if (had_error()) {
545 return;
546 }
547 switch (cp->tag_at(i).value()) {
548 case JVM_CONSTANT_UnresolvedClass: {
549 if (tag == JVM_CONSTANT_Class) {
550 tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i);
551 Klass* k = cp->klass_at(i, CHECK);
552 }
553 break;
554 }
555 case JVM_CONSTANT_Long:
556 case JVM_CONSTANT_Double:
557 parsed_two_word = i + 1;
558
559 case JVM_CONSTANT_ClassIndex:
560 case JVM_CONSTANT_StringIndex:
561 case JVM_CONSTANT_String:
562 case JVM_CONSTANT_UnresolvedClassInError:
563 case JVM_CONSTANT_Fieldref:
564 case JVM_CONSTANT_Methodref:
565 case JVM_CONSTANT_InterfaceMethodref:
566 case JVM_CONSTANT_NameAndType:
567 case JVM_CONSTANT_Utf8:
568 case JVM_CONSTANT_Integer:
569 case JVM_CONSTANT_Float:
570 if (tag != cp->tag_at(i).value()) {
571 report_error("tag mismatch: wrong class files?");
572 return;
573 }
574 break;
575
576 case JVM_CONSTANT_Class:
577 if (tag == JVM_CONSTANT_Class) {
578 } else if (tag == JVM_CONSTANT_UnresolvedClass) {
579 tty->print_cr("Warning: entry was unresolved in the replay data");
580 } else {
581 report_error("Unexpected tag");
582 return;
583 }
584 break;
585
586 case 0:
587 if (parsed_two_word == i) continue;
588
589 default:
590 ShouldNotReachHere();
591 break;
592 }
593
594 }
595 }
596
597 // Initialize a class and fill in the value for a static field.
598 // This is useful when the compile was dependent on the value of
599 // static fields but it's impossible to properly rerun the static
600 // initiailizer.
601 void process_staticfield(TRAPS) {
602 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
603
604 if (ReplaySuppressInitializers == 0 ||
605 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
606 return;
607 }
608
609 assert(k->is_initialized(), "must be");
610
611 const char* field_name = parse_escaped_string();;
612 const char* field_signature = parse_string();
613 fieldDescriptor fd;
614 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
615 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
616 if (!k->find_local_field(name, sig, &fd) ||
617 !fd.is_static() ||
618 fd.has_initial_value()) {
619 report_error(field_name);
620 return;
621 }
622
623 oop java_mirror = k->java_mirror();
624 if (field_signature[0] == '[') {
625 int length = parse_int("array length");
626 oop value = NULL;
627
628 if (field_signature[1] == '[') {
629 // multi dimensional array
630 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
631 int rank = 0;
632 while (field_signature[rank] == '[') {
633 rank++;
634 }
635 int* dims = NEW_RESOURCE_ARRAY(int, rank);
636 dims[0] = length;
637 for (int i = 1; i < rank; i++) {
638 dims[i] = 1; // These aren't relevant to the compiler
639 }
640 value = kelem->multi_allocate(rank, dims, CHECK);
641 } else {
642 if (strcmp(field_signature, "[B") == 0) {
643 value = oopFactory::new_byteArray(length, CHECK);
644 } else if (strcmp(field_signature, "[Z") == 0) {
645 value = oopFactory::new_boolArray(length, CHECK);
646 } else if (strcmp(field_signature, "[C") == 0) {
647 value = oopFactory::new_charArray(length, CHECK);
648 } else if (strcmp(field_signature, "[S") == 0) {
649 value = oopFactory::new_shortArray(length, CHECK);
650 } else if (strcmp(field_signature, "[F") == 0) {
651 value = oopFactory::new_singleArray(length, CHECK);
652 } else if (strcmp(field_signature, "[D") == 0) {
653 value = oopFactory::new_doubleArray(length, CHECK);
654 } else if (strcmp(field_signature, "[I") == 0) {
655 value = oopFactory::new_intArray(length, CHECK);
656 } else if (strcmp(field_signature, "[J") == 0) {
657 value = oopFactory::new_longArray(length, CHECK);
658 } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
659 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
660 value = oopFactory::new_objArray(kelem(), length, CHECK);
661 } else {
662 report_error("unhandled array staticfield");
663 }
664 }
665 java_mirror->obj_field_put(fd.offset(), value);
666 } else {
667 const char* string_value = parse_escaped_string();
668 if (strcmp(field_signature, "I") == 0) {
669 int value = atoi(string_value);
670 java_mirror->int_field_put(fd.offset(), value);
671 } else if (strcmp(field_signature, "B") == 0) {
672 int value = atoi(string_value);
673 java_mirror->byte_field_put(fd.offset(), value);
674 } else if (strcmp(field_signature, "C") == 0) {
675 int value = atoi(string_value);
676 java_mirror->char_field_put(fd.offset(), value);
677 } else if (strcmp(field_signature, "S") == 0) {
678 int value = atoi(string_value);
679 java_mirror->short_field_put(fd.offset(), value);
680 } else if (strcmp(field_signature, "Z") == 0) {
681 int value = atol(string_value);
682 java_mirror->bool_field_put(fd.offset(), value);
683 } else if (strcmp(field_signature, "J") == 0) {
684 jlong value;
685 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
686 fprintf(stderr, "Error parsing long: %s\n", string_value);
687 return;
688 }
689 java_mirror->long_field_put(fd.offset(), value);
690 } else if (strcmp(field_signature, "F") == 0) {
691 float value = atof(string_value);
692 java_mirror->float_field_put(fd.offset(), value);
693 } else if (strcmp(field_signature, "D") == 0) {
694 double value = atof(string_value);
695 java_mirror->double_field_put(fd.offset(), value);
696 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
697 Handle value = java_lang_String::create_from_str(string_value, CHECK);
698 java_mirror->obj_field_put(fd.offset(), value());
699 } else if (field_signature[0] == 'L') {
700 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
701 KlassHandle kelem = resolve_klass(field_signature, CHECK);
702 oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK);
703 java_mirror->obj_field_put(fd.offset(), value);
704 } else {
705 report_error("unhandled staticfield");
706 }
707 }
708 }
709
710 #if INCLUDE_JVMTI
711 void process_JvmtiExport(TRAPS) {
712 const char* field = parse_string();
713 bool value = parse_int("JvmtiExport flag") != 0;
714 if (strcmp(field, "can_access_local_variables") == 0) {
715 JvmtiExport::set_can_access_local_variables(value);
716 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
717 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
718 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
719 JvmtiExport::set_can_post_on_exceptions(value);
720 } else {
721 report_error("Unrecognized JvmtiExport directive");
722 }
723 }
724 #endif // INCLUDE_JVMTI
725
726 // Create and initialize a record for a ciMethod
727 ciMethodRecord* new_ciMethod(Method* method) {
728 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
729 rec->klass = method->method_holder()->name()->as_utf8();
730 rec->method = method->name()->as_utf8();
731 rec->signature = method->signature()->as_utf8();
732 ci_method_records.append(rec);
733 return rec;
734 }
735
736 // Lookup data for a ciMethod
737 ciMethodRecord* find_ciMethodRecord(Method* method) {
738 const char* klass_name = method->method_holder()->name()->as_utf8();
739 const char* method_name = method->name()->as_utf8();
740 const char* signature = method->signature()->as_utf8();
741 for (int i = 0; i < ci_method_records.length(); i++) {
742 ciMethodRecord* rec = ci_method_records.at(i);
743 if (strcmp(rec->klass, klass_name) == 0 &&
744 strcmp(rec->method, method_name) == 0 &&
745 strcmp(rec->signature, signature) == 0) {
746 return rec;
747 }
748 }
749 return NULL;
750 }
751
752 // Create and initialize a record for a ciMethodData
753 ciMethodDataRecord* new_ciMethodData(Method* method) {
754 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
755 rec->klass = method->method_holder()->name()->as_utf8();
756 rec->method = method->name()->as_utf8();
757 rec->signature = method->signature()->as_utf8();
758 ci_method_data_records.append(rec);
759 return rec;
760 }
761
762 // Lookup data for a ciMethodData
763 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
764 const char* klass_name = method->method_holder()->name()->as_utf8();
765 const char* method_name = method->name()->as_utf8();
766 const char* signature = method->signature()->as_utf8();
767 for (int i = 0; i < ci_method_data_records.length(); i++) {
768 ciMethodDataRecord* rec = ci_method_data_records.at(i);
769 if (strcmp(rec->klass, klass_name) == 0 &&
770 strcmp(rec->method, method_name) == 0 &&
771 strcmp(rec->signature, signature) == 0) {
772 return rec;
773 }
774 }
775 return NULL;
776 }
777
778 const char* error_message() {
779 return _error_message;
780 }
781
782 void reset() {
783 _error_message = NULL;
784 ci_method_records.clear();
785 ci_method_data_records.clear();
786 }
787
788 // Take an ascii string contain \u#### escapes and convert it to utf8
789 // in place.
790 static void unescape_string(char* value) {
791 char* from = value;
792 char* to = value;
793 while (*from != '\0') {
794 if (*from != '\\') {
795 *from++ = *to++;
796 } else {
797 switch (from[1]) {
798 case 'u': {
799 from += 2;
800 jchar value=0;
801 for (int i=0; i<4; i++) {
802 char c = *from++;
803 switch (c) {
804 case '0': case '1': case '2': case '3': case '4':
805 case '5': case '6': case '7': case '8': case '9':
806 value = (value << 4) + c - '0';
807 break;
808 case 'a': case 'b': case 'c':
809 case 'd': case 'e': case 'f':
810 value = (value << 4) + 10 + c - 'a';
811 break;
812 case 'A': case 'B': case 'C':
813 case 'D': case 'E': case 'F':
814 value = (value << 4) + 10 + c - 'A';
815 break;
816 default:
817 ShouldNotReachHere();
818 }
819 }
820 UNICODE::convert_to_utf8(&value, 1, to);
821 to++;
822 break;
823 }
824 case 't': *to++ = '\t'; from += 2; break;
825 case 'n': *to++ = '\n'; from += 2; break;
826 case 'r': *to++ = '\r'; from += 2; break;
827 case 'f': *to++ = '\f'; from += 2; break;
828 default:
829 ShouldNotReachHere();
830 }
831 }
832 }
833 *from = *to;
834 }
835 };
836
837 void ciReplay::replay(TRAPS) {
838 int exit_code = replay_impl(THREAD);
839
840 Threads::destroy_vm();
841
842 vm_exit(exit_code);
843 }
844
845 int ciReplay::replay_impl(TRAPS) {
846 HandleMark hm;
847 ResourceMark rm;
848 // Make sure we don't run with background compilation
849 BackgroundCompilation = false;
850
851 if (ReplaySuppressInitializers > 2) {
852 // ReplaySuppressInitializers > 2 means that we want to allow
853 // normal VM bootstrap but once we get into the replay itself
854 // don't allow any intializers to be run.
855 ReplaySuppressInitializers = 1;
856 }
857
858 // Load and parse the replay data
859 CompileReplay rp(ReplayDataFile, THREAD);
860 int exit_code = 0;
861 if (rp.can_replay()) {
862 rp.process(THREAD);
863 } else {
864 exit_code = 1;
865 return exit_code;
866 }
867
868 if (HAS_PENDING_EXCEPTION) {
869 oop throwable = PENDING_EXCEPTION;
870 CLEAR_PENDING_EXCEPTION;
871 java_lang_Throwable::print(throwable, tty);
872 tty->cr();
873 java_lang_Throwable::print_stack_trace(throwable, tty);
874 tty->cr();
875 exit_code = 2;
876 }
877
878 if (rp.had_error()) {
879 tty->print_cr("Failed on %s", rp.error_message());
880 exit_code = 1;
881 }
882 return exit_code;
883 }
884
885
886 void ciReplay::initialize(ciMethodData* m) {
887 if (replay_state == NULL) {
888 return;
889 }
890
891 ASSERT_IN_VM;
892 ResourceMark rm;
893
894 Method* method = m->get_MethodData()->method();
895 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
896 if (rec == NULL) {
897 // This indicates some mismatch with the original environment and
898 // the replay environment though it's not always enough to
899 // interfere with reproducing a bug
900 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
901 method->print_name(tty);
902 tty->cr();
903 } else {
904 m->_state = rec->state;
905 m->_current_mileage = rec->current_mileage;
906 if (rec->data_length != 0) {
907 assert(m->_data_size == rec->data_length * (int)sizeof(rec->data[0]), "must agree");
908
909 // Write the correct ciObjects back into the profile data
910 ciEnv* env = ciEnv::current();
911 for (int i = 0; i < rec->oops_length; i++) {
912 KlassHandle *h = (KlassHandle *)rec->oops_handles[i];
913 *(ciMetadata**)(rec->data + rec->oops_offsets[i]) =
914 env->get_metadata((*h)());
915 }
916 // Copy the updated profile data into place as intptr_ts
917 #ifdef _LP64
918 Copy::conjoint_jlongs_atomic((jlong *)rec->data, (jlong *)m->_data, rec->data_length);
919 #else
920 Copy::conjoint_jints_atomic((jint *)rec->data, (jint *)m->_data, rec->data_length);
921 #endif
922 }
923
924 // copy in the original header
925 Copy::conjoint_jbytes(rec->orig_data, (char*)&m->_orig, rec->orig_data_length);
926 }
927 }
928
929
930 bool ciReplay::should_not_inline(ciMethod* method) {
931 if (replay_state == NULL) {
932 return false;
933 }
934
935 VM_ENTRY_MARK;
936 // ciMethod without a record shouldn't be inlined.
937 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
938 }
939
940
941 void ciReplay::initialize(ciMethod* m) {
942 if (replay_state == NULL) {
943 return;
944 }
945
946 ASSERT_IN_VM;
947 ResourceMark rm;
948
949 Method* method = m->get_Method();
950 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
951 if (rec == NULL) {
952 // This indicates some mismatch with the original environment and
953 // the replay environment though it's not always enough to
954 // interfere with reproducing a bug
955 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
956 method->print_name(tty);
957 tty->cr();
958 } else {
959 // m->_instructions_size = rec->instructions_size;
960 m->_instructions_size = -1;
961 m->_interpreter_invocation_count = rec->interpreter_invocation_count;
962 m->_interpreter_throwout_count = rec->interpreter_throwout_count;
963 method->invocation_counter()->_counter = rec->invocation_counter;
964 method->backedge_counter()->_counter = rec->backedge_counter;
965 }
966 }
967
968 bool ciReplay::is_loaded(Method* method) {
969 if (replay_state == NULL) {
970 return true;
971 }
972
973 ASSERT_IN_VM;
974 ResourceMark rm;
975
976 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
977 return rec != NULL;
978 }
979 #endif // PRODUCT