Tue, 16 Oct 2018 10:40:23 -0400
8064811: Use THEAD instead of CHECK_NULL in return statements
Summary: Backport from JDK9
Reviewed-by: dholmes, coffeys
1 /*
2 * Copyright (c) 2013, 2018, 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 */
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 "utilities/copy.hpp"
36 #include "utilities/macros.hpp"
38 #ifndef PRODUCT
40 // ciReplay
42 typedef struct _ciMethodDataRecord {
43 const char* _klass_name;
44 const char* _method_name;
45 const char* _signature;
47 int _state;
48 int _current_mileage;
50 intptr_t* _data;
51 char* _orig_data;
52 jobject* _oops_handles;
53 int* _oops_offsets;
54 int _data_length;
55 int _orig_data_length;
56 int _oops_length;
57 } ciMethodDataRecord;
59 typedef struct _ciMethodRecord {
60 const char* _klass_name;
61 const char* _method_name;
62 const char* _signature;
64 int _instructions_size;
65 int _interpreter_invocation_count;
66 int _interpreter_throwout_count;
67 int _invocation_counter;
68 int _backedge_counter;
69 } ciMethodRecord;
71 typedef struct _ciInlineRecord {
72 const char* _klass_name;
73 const char* _method_name;
74 const char* _signature;
76 int _inline_depth;
77 int _inline_bci;
78 } ciInlineRecord;
80 class CompileReplay;
81 static CompileReplay* replay_state;
83 class CompileReplay : public StackObj {
84 private:
85 FILE* _stream;
86 Thread* _thread;
87 Handle _protection_domain;
88 Handle _loader;
90 GrowableArray<ciMethodRecord*> _ci_method_records;
91 GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
93 // Use pointer because we may need to return inline records
94 // without destroying them.
95 GrowableArray<ciInlineRecord*>* _ci_inline_records;
97 const char* _error_message;
99 char* _bufptr;
100 char* _buffer;
101 int _buffer_length;
102 int _buffer_pos;
104 // "compile" data
105 ciKlass* _iklass;
106 Method* _imethod;
107 int _entry_bci;
108 int _comp_level;
110 public:
111 CompileReplay(const char* filename, TRAPS) {
112 _thread = THREAD;
113 _loader = Handle(_thread, SystemDictionary::java_system_loader());
114 _protection_domain = Handle();
116 _stream = fopen(filename, "rt");
117 if (_stream == NULL) {
118 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
119 }
121 _ci_inline_records = NULL;
122 _error_message = NULL;
124 _buffer_length = 32;
125 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
126 _bufptr = _buffer;
127 _buffer_pos = 0;
129 _imethod = NULL;
130 _iklass = NULL;
131 _entry_bci = 0;
132 _comp_level = 0;
134 test();
135 }
137 ~CompileReplay() {
138 if (_stream != NULL) fclose(_stream);
139 }
141 void test() {
142 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
143 _bufptr = _buffer;
144 assert(parse_int("test") == 1, "what");
145 assert(parse_int("test") == 2, "what");
146 assert(strcmp(parse_string(), "foo") == 0, "what");
147 assert(parse_int("test") == 4, "what");
148 assert(strcmp(parse_string(), "bar") == 0, "what");
149 assert(parse_intptr_t("test") == 9, "what");
150 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
151 }
153 bool had_error() {
154 return _error_message != NULL || _thread->has_pending_exception();
155 }
157 bool can_replay() {
158 return !(_stream == NULL || had_error());
159 }
161 void report_error(const char* msg) {
162 _error_message = msg;
163 // Restore the _buffer contents for error reporting
164 for (int i = 0; i < _buffer_pos; i++) {
165 if (_buffer[i] == '\0') _buffer[i] = ' ';
166 }
167 }
169 int parse_int(const char* label) {
170 if (had_error()) {
171 return 0;
172 }
174 int v = 0;
175 int read;
176 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
177 report_error(label);
178 } else {
179 _bufptr += read;
180 }
181 return v;
182 }
184 intptr_t parse_intptr_t(const char* label) {
185 if (had_error()) {
186 return 0;
187 }
189 intptr_t v = 0;
190 int read;
191 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
192 report_error(label);
193 } else {
194 _bufptr += read;
195 }
196 return v;
197 }
199 void skip_ws() {
200 // Skip any leading whitespace
201 while (*_bufptr == ' ' || *_bufptr == '\t') {
202 _bufptr++;
203 }
204 }
207 char* scan_and_terminate(char delim) {
208 char* str = _bufptr;
209 while (*_bufptr != delim && *_bufptr != '\0') {
210 _bufptr++;
211 }
212 if (*_bufptr != '\0') {
213 *_bufptr++ = '\0';
214 }
215 if (_bufptr == str) {
216 // nothing here
217 return NULL;
218 }
219 return str;
220 }
222 char* parse_string() {
223 if (had_error()) return NULL;
225 skip_ws();
226 return scan_and_terminate(' ');
227 }
229 char* parse_quoted_string() {
230 if (had_error()) return NULL;
232 skip_ws();
234 if (*_bufptr == '"') {
235 _bufptr++;
236 return scan_and_terminate('"');
237 } else {
238 return scan_and_terminate(' ');
239 }
240 }
242 const char* parse_escaped_string() {
243 char* result = parse_quoted_string();
244 if (result != NULL) {
245 unescape_string(result);
246 }
247 return result;
248 }
250 // Look for the tag 'tag' followed by an
251 bool parse_tag_and_count(const char* tag, int& length) {
252 const char* t = parse_string();
253 if (t == NULL) {
254 return false;
255 }
257 if (strcmp(tag, t) != 0) {
258 report_error(tag);
259 return false;
260 }
261 length = parse_int("parse_tag_and_count");
262 return !had_error();
263 }
265 // Parse a sequence of raw data encoded as bytes and return the
266 // resulting data.
267 char* parse_data(const char* tag, int& length) {
268 if (!parse_tag_and_count(tag, length)) {
269 return NULL;
270 }
272 char * result = NEW_RESOURCE_ARRAY(char, length);
273 for (int i = 0; i < length; i++) {
274 int val = parse_int("data");
275 result[i] = val;
276 }
277 return result;
278 }
280 // Parse a standard chunk of data emitted as:
281 // 'tag' <length> # # ...
282 // Where each # is an intptr_t item
283 intptr_t* parse_intptr_data(const char* tag, int& length) {
284 if (!parse_tag_and_count(tag, length)) {
285 return NULL;
286 }
288 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
289 for (int i = 0; i < length; i++) {
290 skip_ws();
291 intptr_t val = parse_intptr_t("data");
292 result[i] = val;
293 }
294 return result;
295 }
297 // Parse a possibly quoted version of a symbol into a symbolOop
298 Symbol* parse_symbol(TRAPS) {
299 const char* str = parse_escaped_string();
300 if (str != NULL) {
301 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
302 return sym;
303 }
304 return NULL;
305 }
307 // Parse a valid klass name and look it up
308 Klass* parse_klass(TRAPS) {
309 const char* str = parse_escaped_string();
310 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
311 if (klass_name != NULL) {
312 Klass* k = NULL;
313 if (_iklass != NULL) {
314 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
315 } else {
316 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
317 }
318 if (HAS_PENDING_EXCEPTION) {
319 oop throwable = PENDING_EXCEPTION;
320 java_lang_Throwable::print(throwable, tty);
321 tty->cr();
322 report_error(str);
323 return NULL;
324 }
325 return k;
326 }
327 return NULL;
328 }
330 // Lookup a klass
331 Klass* resolve_klass(const char* klass, TRAPS) {
332 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);
333 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
334 }
336 // Parse the standard tuple of <klass> <name> <signature>
337 Method* parse_method(TRAPS) {
338 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
339 Symbol* method_name = parse_symbol(CHECK_NULL);
340 Symbol* method_signature = parse_symbol(CHECK_NULL);
341 Method* m = k->find_method(method_name, method_signature);
342 if (m == NULL) {
343 report_error("Can't find method");
344 }
345 return m;
346 }
348 int get_line(int c) {
349 while(c != EOF) {
350 if (_buffer_pos + 1 >= _buffer_length) {
351 int new_length = _buffer_length * 2;
352 // Next call will throw error in case of OOM.
353 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
354 _buffer_length = new_length;
355 }
356 if (c == '\n') {
357 c = getc(_stream); // get next char
358 break;
359 } else if (c == '\r') {
360 // skip LF
361 } else {
362 _buffer[_buffer_pos++] = c;
363 }
364 c = getc(_stream);
365 }
366 // null terminate it, reset the pointer
367 _buffer[_buffer_pos] = '\0'; // NL or EOF
368 _buffer_pos = 0;
369 _bufptr = _buffer;
370 return c;
371 }
373 // Process each line of the replay file executing each command until
374 // the file ends.
375 void process(TRAPS) {
376 int line_no = 1;
377 int c = getc(_stream);
378 while(c != EOF) {
379 c = get_line(c);
380 process_command(THREAD);
381 if (had_error()) {
382 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
383 if (ReplayIgnoreInitErrors) {
384 CLEAR_PENDING_EXCEPTION;
385 _error_message = NULL;
386 } else {
387 return;
388 }
389 }
390 line_no++;
391 }
392 }
394 void process_command(TRAPS) {
395 char* cmd = parse_string();
396 if (cmd == NULL) {
397 return;
398 }
399 if (strcmp("#", cmd) == 0) {
400 // ignore
401 } else if (strcmp("compile", cmd) == 0) {
402 process_compile(CHECK);
403 } else if (strcmp("ciMethod", cmd) == 0) {
404 process_ciMethod(CHECK);
405 } else if (strcmp("ciMethodData", cmd) == 0) {
406 process_ciMethodData(CHECK);
407 } else if (strcmp("staticfield", cmd) == 0) {
408 process_staticfield(CHECK);
409 } else if (strcmp("ciInstanceKlass", cmd) == 0) {
410 process_ciInstanceKlass(CHECK);
411 } else if (strcmp("instanceKlass", cmd) == 0) {
412 process_instanceKlass(CHECK);
413 #if INCLUDE_JVMTI
414 } else if (strcmp("JvmtiExport", cmd) == 0) {
415 process_JvmtiExport(CHECK);
416 #endif // INCLUDE_JVMTI
417 } else {
418 report_error("unknown command");
419 }
420 }
422 // validation of comp_level
423 bool is_valid_comp_level(int comp_level) {
424 const int msg_len = 256;
425 char* msg = NULL;
426 if (!is_compile(comp_level)) {
427 msg = NEW_RESOURCE_ARRAY(char, msg_len);
428 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
429 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) {
430 msg = NEW_RESOURCE_ARRAY(char, msg_len);
431 switch (comp_level) {
432 case CompLevel_simple:
433 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level);
434 break;
435 case CompLevel_full_optimization:
436 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level);
437 break;
438 default:
439 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level);
440 }
441 }
442 if (msg != NULL) {
443 report_error(msg);
444 return false;
445 }
446 return true;
447 }
449 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ...
450 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
451 _imethod = m;
452 _iklass = imethod->holder();
453 _entry_bci = entry_bci;
454 _comp_level = comp_level;
455 int line_no = 1;
456 int c = getc(_stream);
457 while(c != EOF) {
458 c = get_line(c);
459 // Expecting only lines with "compile" command in inline replay file.
460 char* cmd = parse_string();
461 if (cmd == NULL || strcmp("compile", cmd) != 0) {
462 return NULL;
463 }
464 process_compile(CHECK_NULL);
465 if (had_error()) {
466 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
467 tty->print_cr("%s", _buffer);
468 return NULL;
469 }
470 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
471 // Found inlining record for the requested method.
472 return _ci_inline_records;
473 }
474 line_no++;
475 }
476 return NULL;
477 }
479 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ...
480 void process_compile(TRAPS) {
481 Method* method = parse_method(CHECK);
482 if (had_error()) return;
483 int entry_bci = parse_int("entry_bci");
484 const char* comp_level_label = "comp_level";
485 int comp_level = parse_int(comp_level_label);
486 // old version w/o comp_level
487 if (had_error() && (error_message() == comp_level_label)) {
488 comp_level = CompLevel_full_optimization;
489 }
490 if (!is_valid_comp_level(comp_level)) {
491 return;
492 }
493 if (_imethod != NULL) {
494 // Replay Inlining
495 if (entry_bci != _entry_bci || comp_level != _comp_level) {
496 return;
497 }
498 const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
499 const char* imethod_name = _imethod->name()->as_utf8();
500 const char* isignature = _imethod->signature()->as_utf8();
501 const char* klass_name = method->method_holder()->name()->as_utf8();
502 const char* method_name = method->name()->as_utf8();
503 const char* signature = method->signature()->as_utf8();
504 if (strcmp(iklass_name, klass_name) != 0 ||
505 strcmp(imethod_name, method_name) != 0 ||
506 strcmp(isignature, signature) != 0) {
507 return;
508 }
509 }
510 int inline_count = 0;
511 if (parse_tag_and_count("inline", inline_count)) {
512 // Record inlining data
513 _ci_inline_records = new GrowableArray<ciInlineRecord*>();
514 for (int i = 0; i < inline_count; i++) {
515 int depth = parse_int("inline_depth");
516 int bci = parse_int("inline_bci");
517 if (had_error()) {
518 break;
519 }
520 Method* inl_method = parse_method(CHECK);
521 if (had_error()) {
522 break;
523 }
524 new_ciInlineRecord(inl_method, bci, depth);
525 }
526 }
527 if (_imethod != NULL) {
528 return; // Replay Inlining
529 }
530 Klass* k = method->method_holder();
531 ((InstanceKlass*)k)->initialize(THREAD);
532 if (HAS_PENDING_EXCEPTION) {
533 oop throwable = PENDING_EXCEPTION;
534 java_lang_Throwable::print(throwable, tty);
535 tty->cr();
536 if (ReplayIgnoreInitErrors) {
537 CLEAR_PENDING_EXCEPTION;
538 ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized);
539 } else {
540 return;
541 }
542 }
543 // Make sure the existence of a prior compile doesn't stop this one
544 nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
545 if (nm != NULL) {
546 nm->make_not_entrant();
547 }
548 replay_state = this;
549 CompileBroker::compile_method(method, entry_bci, comp_level,
550 methodHandle(), 0, "replay", THREAD);
551 replay_state = NULL;
552 reset();
553 }
555 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
556 //
557 //
558 void process_ciMethod(TRAPS) {
559 Method* method = parse_method(CHECK);
560 if (had_error()) return;
561 ciMethodRecord* rec = new_ciMethod(method);
562 rec->_invocation_counter = parse_int("invocation_counter");
563 rec->_backedge_counter = parse_int("backedge_counter");
564 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
565 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
566 rec->_instructions_size = parse_int("instructions_size");
567 }
569 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length>
570 void process_ciMethodData(TRAPS) {
571 Method* method = parse_method(CHECK);
572 if (had_error()) return;
573 /* just copied from Method, to build interpret data*/
574 if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) {
575 return;
576 }
577 // To be properly initialized, some profiling in the MDO needs the
578 // method to be rewritten (number of arguments at a call for
579 // instance)
580 method->method_holder()->link_class(CHECK);
581 // methodOopDesc::build_interpreter_method_data(method, CHECK);
582 {
583 // Grab a lock here to prevent multiple
584 // MethodData*s from being created.
585 MutexLocker ml(MethodData_lock, THREAD);
586 if (method->method_data() == NULL) {
587 ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
588 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
589 method->set_method_data(method_data);
590 }
591 }
593 // collect and record all the needed information for later
594 ciMethodDataRecord* rec = new_ciMethodData(method);
595 rec->_state = parse_int("state");
596 rec->_current_mileage = parse_int("current_mileage");
598 rec->_orig_data = parse_data("orig", rec->_orig_data_length);
599 if (rec->_orig_data == NULL) {
600 return;
601 }
602 rec->_data = parse_intptr_data("data", rec->_data_length);
603 if (rec->_data == NULL) {
604 return;
605 }
606 if (!parse_tag_and_count("oops", rec->_oops_length)) {
607 return;
608 }
609 rec->_oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->_oops_length);
610 rec->_oops_offsets = NEW_RESOURCE_ARRAY(int, rec->_oops_length);
611 for (int i = 0; i < rec->_oops_length; i++) {
612 int offset = parse_int("offset");
613 if (had_error()) {
614 return;
615 }
616 Klass* k = parse_klass(CHECK);
617 rec->_oops_offsets[i] = offset;
618 KlassHandle *kh = NEW_C_HEAP_OBJ(KlassHandle, mtCompiler);
619 ::new ((void*)kh) KlassHandle(THREAD, k);
620 rec->_oops_handles[i] = (jobject)kh;
621 }
622 }
624 // instanceKlass <name>
625 //
626 // Loads and initializes the klass 'name'. This can be used to
627 // create particular class loading environments
628 void process_instanceKlass(TRAPS) {
629 // just load the referenced class
630 Klass* k = parse_klass(CHECK);
631 }
633 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
634 //
635 // Load the klass 'name' and link or initialize it. Verify that the
636 // constant pool is the same length as 'length' and make sure the
637 // constant pool tags are in the same state.
638 void process_ciInstanceKlass(TRAPS) {
639 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
640 int is_linked = parse_int("is_linked");
641 int is_initialized = parse_int("is_initialized");
642 int length = parse_int("length");
643 if (is_initialized) {
644 k->initialize(THREAD);
645 if (HAS_PENDING_EXCEPTION) {
646 oop throwable = PENDING_EXCEPTION;
647 java_lang_Throwable::print(throwable, tty);
648 tty->cr();
649 if (ReplayIgnoreInitErrors) {
650 CLEAR_PENDING_EXCEPTION;
651 k->set_init_state(InstanceKlass::fully_initialized);
652 } else {
653 return;
654 }
655 }
656 } else if (is_linked) {
657 k->link_class(CHECK);
658 }
659 ConstantPool* cp = k->constants();
660 if (length != cp->length()) {
661 report_error("constant pool length mismatch: wrong class files?");
662 return;
663 }
665 int parsed_two_word = 0;
666 for (int i = 1; i < length; i++) {
667 int tag = parse_int("tag");
668 if (had_error()) {
669 return;
670 }
671 switch (cp->tag_at(i).value()) {
672 case JVM_CONSTANT_UnresolvedClass: {
673 if (tag == JVM_CONSTANT_Class) {
674 tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i);
675 Klass* k = cp->klass_at(i, CHECK);
676 }
677 break;
678 }
679 case JVM_CONSTANT_Long:
680 case JVM_CONSTANT_Double:
681 parsed_two_word = i + 1;
683 case JVM_CONSTANT_ClassIndex:
684 case JVM_CONSTANT_StringIndex:
685 case JVM_CONSTANT_String:
686 case JVM_CONSTANT_UnresolvedClassInError:
687 case JVM_CONSTANT_Fieldref:
688 case JVM_CONSTANT_Methodref:
689 case JVM_CONSTANT_InterfaceMethodref:
690 case JVM_CONSTANT_NameAndType:
691 case JVM_CONSTANT_Utf8:
692 case JVM_CONSTANT_Integer:
693 case JVM_CONSTANT_Float:
694 case JVM_CONSTANT_MethodHandle:
695 case JVM_CONSTANT_MethodType:
696 case JVM_CONSTANT_InvokeDynamic:
697 if (tag != cp->tag_at(i).value()) {
698 report_error("tag mismatch: wrong class files?");
699 return;
700 }
701 break;
703 case JVM_CONSTANT_Class:
704 if (tag == JVM_CONSTANT_Class) {
705 } else if (tag == JVM_CONSTANT_UnresolvedClass) {
706 tty->print_cr("Warning: entry was unresolved in the replay data");
707 } else {
708 report_error("Unexpected tag");
709 return;
710 }
711 break;
713 case 0:
714 if (parsed_two_word == i) continue;
716 default:
717 fatal(err_msg_res("Unexpected tag: %d", cp->tag_at(i).value()));
718 break;
719 }
721 }
722 }
724 // Initialize a class and fill in the value for a static field.
725 // This is useful when the compile was dependent on the value of
726 // static fields but it's impossible to properly rerun the static
727 // initiailizer.
728 void process_staticfield(TRAPS) {
729 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
731 if (ReplaySuppressInitializers == 0 ||
732 ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
733 return;
734 }
736 assert(k->is_initialized(), "must be");
738 const char* field_name = parse_escaped_string();;
739 const char* field_signature = parse_string();
740 fieldDescriptor fd;
741 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
742 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
743 if (!k->find_local_field(name, sig, &fd) ||
744 !fd.is_static() ||
745 fd.has_initial_value()) {
746 report_error(field_name);
747 return;
748 }
750 oop java_mirror = k->java_mirror();
751 if (field_signature[0] == '[') {
752 int length = parse_int("array length");
753 oop value = NULL;
755 if (field_signature[1] == '[') {
756 // multi dimensional array
757 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
758 int rank = 0;
759 while (field_signature[rank] == '[') {
760 rank++;
761 }
762 int* dims = NEW_RESOURCE_ARRAY(int, rank);
763 dims[0] = length;
764 for (int i = 1; i < rank; i++) {
765 dims[i] = 1; // These aren't relevant to the compiler
766 }
767 value = kelem->multi_allocate(rank, dims, CHECK);
768 } else {
769 if (strcmp(field_signature, "[B") == 0) {
770 value = oopFactory::new_byteArray(length, CHECK);
771 } else if (strcmp(field_signature, "[Z") == 0) {
772 value = oopFactory::new_boolArray(length, CHECK);
773 } else if (strcmp(field_signature, "[C") == 0) {
774 value = oopFactory::new_charArray(length, CHECK);
775 } else if (strcmp(field_signature, "[S") == 0) {
776 value = oopFactory::new_shortArray(length, CHECK);
777 } else if (strcmp(field_signature, "[F") == 0) {
778 value = oopFactory::new_singleArray(length, CHECK);
779 } else if (strcmp(field_signature, "[D") == 0) {
780 value = oopFactory::new_doubleArray(length, CHECK);
781 } else if (strcmp(field_signature, "[I") == 0) {
782 value = oopFactory::new_intArray(length, CHECK);
783 } else if (strcmp(field_signature, "[J") == 0) {
784 value = oopFactory::new_longArray(length, CHECK);
785 } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
786 KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
787 value = oopFactory::new_objArray(kelem(), length, CHECK);
788 } else {
789 report_error("unhandled array staticfield");
790 }
791 }
792 java_mirror->obj_field_put(fd.offset(), value);
793 } else {
794 const char* string_value = parse_escaped_string();
795 if (strcmp(field_signature, "I") == 0) {
796 int value = atoi(string_value);
797 java_mirror->int_field_put(fd.offset(), value);
798 } else if (strcmp(field_signature, "B") == 0) {
799 int value = atoi(string_value);
800 java_mirror->byte_field_put(fd.offset(), value);
801 } else if (strcmp(field_signature, "C") == 0) {
802 int value = atoi(string_value);
803 java_mirror->char_field_put(fd.offset(), value);
804 } else if (strcmp(field_signature, "S") == 0) {
805 int value = atoi(string_value);
806 java_mirror->short_field_put(fd.offset(), value);
807 } else if (strcmp(field_signature, "Z") == 0) {
808 int value = atol(string_value);
809 java_mirror->bool_field_put(fd.offset(), value);
810 } else if (strcmp(field_signature, "J") == 0) {
811 jlong value;
812 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
813 fprintf(stderr, "Error parsing long: %s\n", string_value);
814 return;
815 }
816 java_mirror->long_field_put(fd.offset(), value);
817 } else if (strcmp(field_signature, "F") == 0) {
818 float value = atof(string_value);
819 java_mirror->float_field_put(fd.offset(), value);
820 } else if (strcmp(field_signature, "D") == 0) {
821 double value = atof(string_value);
822 java_mirror->double_field_put(fd.offset(), value);
823 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
824 Handle value = java_lang_String::create_from_str(string_value, CHECK);
825 java_mirror->obj_field_put(fd.offset(), value());
826 } else if (field_signature[0] == 'L') {
827 Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
828 KlassHandle kelem = resolve_klass(field_signature, CHECK);
829 oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK);
830 java_mirror->obj_field_put(fd.offset(), value);
831 } else {
832 report_error("unhandled staticfield");
833 }
834 }
835 }
837 #if INCLUDE_JVMTI
838 void process_JvmtiExport(TRAPS) {
839 const char* field = parse_string();
840 bool value = parse_int("JvmtiExport flag") != 0;
841 if (strcmp(field, "can_access_local_variables") == 0) {
842 JvmtiExport::set_can_access_local_variables(value);
843 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
844 JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
845 } else if (strcmp(field, "can_post_on_exceptions") == 0) {
846 JvmtiExport::set_can_post_on_exceptions(value);
847 } else {
848 report_error("Unrecognized JvmtiExport directive");
849 }
850 }
851 #endif // INCLUDE_JVMTI
853 // Create and initialize a record for a ciMethod
854 ciMethodRecord* new_ciMethod(Method* method) {
855 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
856 rec->_klass_name = method->method_holder()->name()->as_utf8();
857 rec->_method_name = method->name()->as_utf8();
858 rec->_signature = method->signature()->as_utf8();
859 _ci_method_records.append(rec);
860 return rec;
861 }
863 // Lookup data for a ciMethod
864 ciMethodRecord* find_ciMethodRecord(Method* method) {
865 const char* klass_name = method->method_holder()->name()->as_utf8();
866 const char* method_name = method->name()->as_utf8();
867 const char* signature = method->signature()->as_utf8();
868 for (int i = 0; i < _ci_method_records.length(); i++) {
869 ciMethodRecord* rec = _ci_method_records.at(i);
870 if (strcmp(rec->_klass_name, klass_name) == 0 &&
871 strcmp(rec->_method_name, method_name) == 0 &&
872 strcmp(rec->_signature, signature) == 0) {
873 return rec;
874 }
875 }
876 return NULL;
877 }
879 // Create and initialize a record for a ciMethodData
880 ciMethodDataRecord* new_ciMethodData(Method* method) {
881 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
882 rec->_klass_name = method->method_holder()->name()->as_utf8();
883 rec->_method_name = method->name()->as_utf8();
884 rec->_signature = method->signature()->as_utf8();
885 _ci_method_data_records.append(rec);
886 return rec;
887 }
889 // Lookup data for a ciMethodData
890 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
891 const char* klass_name = method->method_holder()->name()->as_utf8();
892 const char* method_name = method->name()->as_utf8();
893 const char* signature = method->signature()->as_utf8();
894 for (int i = 0; i < _ci_method_data_records.length(); i++) {
895 ciMethodDataRecord* rec = _ci_method_data_records.at(i);
896 if (strcmp(rec->_klass_name, klass_name) == 0 &&
897 strcmp(rec->_method_name, method_name) == 0 &&
898 strcmp(rec->_signature, signature) == 0) {
899 return rec;
900 }
901 }
902 return NULL;
903 }
905 // Create and initialize a record for a ciInlineRecord
906 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) {
907 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
908 rec->_klass_name = method->method_holder()->name()->as_utf8();
909 rec->_method_name = method->name()->as_utf8();
910 rec->_signature = method->signature()->as_utf8();
911 rec->_inline_bci = bci;
912 rec->_inline_depth = depth;
913 _ci_inline_records->append(rec);
914 return rec;
915 }
917 // Lookup inlining data for a ciMethod
918 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
919 if (_ci_inline_records != NULL) {
920 return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
921 }
922 return NULL;
923 }
925 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
926 Method* method, int bci, int depth) {
927 if (records != NULL) {
928 const char* klass_name = method->method_holder()->name()->as_utf8();
929 const char* method_name = method->name()->as_utf8();
930 const char* signature = method->signature()->as_utf8();
931 for (int i = 0; i < records->length(); i++) {
932 ciInlineRecord* rec = records->at(i);
933 if ((rec->_inline_bci == bci) &&
934 (rec->_inline_depth == depth) &&
935 (strcmp(rec->_klass_name, klass_name) == 0) &&
936 (strcmp(rec->_method_name, method_name) == 0) &&
937 (strcmp(rec->_signature, signature) == 0)) {
938 return rec;
939 }
940 }
941 }
942 return NULL;
943 }
945 const char* error_message() {
946 return _error_message;
947 }
949 void reset() {
950 _error_message = NULL;
951 _ci_method_records.clear();
952 _ci_method_data_records.clear();
953 }
955 // Take an ascii string contain \u#### escapes and convert it to utf8
956 // in place.
957 static void unescape_string(char* value) {
958 char* from = value;
959 char* to = value;
960 while (*from != '\0') {
961 if (*from != '\\') {
962 *from++ = *to++;
963 } else {
964 switch (from[1]) {
965 case 'u': {
966 from += 2;
967 jchar value=0;
968 for (int i=0; i<4; i++) {
969 char c = *from++;
970 switch (c) {
971 case '0': case '1': case '2': case '3': case '4':
972 case '5': case '6': case '7': case '8': case '9':
973 value = (value << 4) + c - '0';
974 break;
975 case 'a': case 'b': case 'c':
976 case 'd': case 'e': case 'f':
977 value = (value << 4) + 10 + c - 'a';
978 break;
979 case 'A': case 'B': case 'C':
980 case 'D': case 'E': case 'F':
981 value = (value << 4) + 10 + c - 'A';
982 break;
983 default:
984 ShouldNotReachHere();
985 }
986 }
987 UNICODE::convert_to_utf8(&value, 1, to);
988 to++;
989 break;
990 }
991 case 't': *to++ = '\t'; from += 2; break;
992 case 'n': *to++ = '\n'; from += 2; break;
993 case 'r': *to++ = '\r'; from += 2; break;
994 case 'f': *to++ = '\f'; from += 2; break;
995 default:
996 ShouldNotReachHere();
997 }
998 }
999 }
1000 *from = *to;
1001 }
1002 };
1004 void ciReplay::replay(TRAPS) {
1005 int exit_code = replay_impl(THREAD);
1007 Threads::destroy_vm();
1009 vm_exit(exit_code);
1010 }
1012 void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
1013 if (FLAG_IS_DEFAULT(InlineDataFile)) {
1014 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
1015 return NULL;
1016 }
1018 VM_ENTRY_MARK;
1019 // Load and parse the replay data
1020 CompileReplay rp(InlineDataFile, THREAD);
1021 if (!rp.can_replay()) {
1022 tty->print_cr("ciReplay: !rp.can_replay()");
1023 return NULL;
1024 }
1025 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
1026 if (HAS_PENDING_EXCEPTION) {
1027 oop throwable = PENDING_EXCEPTION;
1028 CLEAR_PENDING_EXCEPTION;
1029 java_lang_Throwable::print(throwable, tty);
1030 tty->cr();
1031 java_lang_Throwable::print_stack_trace(throwable, tty);
1032 tty->cr();
1033 return NULL;
1034 }
1036 if (rp.had_error()) {
1037 tty->print_cr("ciReplay: Failed on %s", rp.error_message());
1038 return NULL;
1039 }
1040 return data;
1041 }
1043 int ciReplay::replay_impl(TRAPS) {
1044 HandleMark hm;
1045 ResourceMark rm;
1046 // Make sure we don't run with background compilation
1047 BackgroundCompilation = false;
1049 if (ReplaySuppressInitializers > 2) {
1050 // ReplaySuppressInitializers > 2 means that we want to allow
1051 // normal VM bootstrap but once we get into the replay itself
1052 // don't allow any intializers to be run.
1053 ReplaySuppressInitializers = 1;
1054 }
1056 if (FLAG_IS_DEFAULT(ReplayDataFile)) {
1057 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
1058 return 1;
1059 }
1061 // Load and parse the replay data
1062 CompileReplay rp(ReplayDataFile, THREAD);
1063 int exit_code = 0;
1064 if (rp.can_replay()) {
1065 rp.process(THREAD);
1066 } else {
1067 exit_code = 1;
1068 return exit_code;
1069 }
1071 if (HAS_PENDING_EXCEPTION) {
1072 oop throwable = PENDING_EXCEPTION;
1073 CLEAR_PENDING_EXCEPTION;
1074 java_lang_Throwable::print(throwable, tty);
1075 tty->cr();
1076 java_lang_Throwable::print_stack_trace(throwable, tty);
1077 tty->cr();
1078 exit_code = 2;
1079 }
1081 if (rp.had_error()) {
1082 tty->print_cr("Failed on %s", rp.error_message());
1083 exit_code = 1;
1084 }
1085 return exit_code;
1086 }
1088 void ciReplay::initialize(ciMethodData* m) {
1089 if (replay_state == NULL) {
1090 return;
1091 }
1093 ASSERT_IN_VM;
1094 ResourceMark rm;
1096 Method* method = m->get_MethodData()->method();
1097 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
1098 if (rec == NULL) {
1099 // This indicates some mismatch with the original environment and
1100 // the replay environment though it's not always enough to
1101 // interfere with reproducing a bug
1102 tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
1103 method->print_name(tty);
1104 tty->cr();
1105 } else {
1106 m->_state = rec->_state;
1107 m->_current_mileage = rec->_current_mileage;
1108 if (rec->_data_length != 0) {
1109 assert(m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
1111 // Write the correct ciObjects back into the profile data
1112 ciEnv* env = ciEnv::current();
1113 for (int i = 0; i < rec->_oops_length; i++) {
1114 KlassHandle *h = (KlassHandle *)rec->_oops_handles[i];
1115 *(ciMetadata**)(rec->_data + rec->_oops_offsets[i]) =
1116 env->get_metadata((*h)());
1117 }
1118 // Copy the updated profile data into place as intptr_ts
1119 #ifdef _LP64
1120 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
1121 #else
1122 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
1123 #endif
1124 }
1126 // copy in the original header
1127 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
1128 }
1129 }
1132 bool ciReplay::should_not_inline(ciMethod* method) {
1133 if (replay_state == NULL) {
1134 return false;
1135 }
1136 VM_ENTRY_MARK;
1137 // ciMethod without a record shouldn't be inlined.
1138 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
1139 }
1141 bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1142 if (data != NULL) {
1143 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1144 VM_ENTRY_MARK;
1145 // Inline record are ordered by bci and depth.
1146 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL;
1147 } else if (replay_state != NULL) {
1148 VM_ENTRY_MARK;
1149 // Inline record are ordered by bci and depth.
1150 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL;
1151 }
1152 return false;
1153 }
1155 bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
1156 if (data != NULL) {
1157 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
1158 VM_ENTRY_MARK;
1159 // Inline record are ordered by bci and depth.
1160 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
1161 } else if (replay_state != NULL) {
1162 VM_ENTRY_MARK;
1163 // Inline record are ordered by bci and depth.
1164 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
1165 }
1166 return false;
1167 }
1169 void ciReplay::initialize(ciMethod* m) {
1170 if (replay_state == NULL) {
1171 return;
1172 }
1174 ASSERT_IN_VM;
1175 ResourceMark rm;
1177 Method* method = m->get_Method();
1178 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1179 if (rec == NULL) {
1180 // This indicates some mismatch with the original environment and
1181 // the replay environment though it's not always enough to
1182 // interfere with reproducing a bug
1183 tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
1184 method->print_name(tty);
1185 tty->cr();
1186 } else {
1187 EXCEPTION_CONTEXT;
1188 // m->_instructions_size = rec->_instructions_size;
1189 m->_instructions_size = -1;
1190 m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
1191 m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
1192 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
1193 guarantee(mcs != NULL, "method counters allocation failed");
1194 mcs->invocation_counter()->_counter = rec->_invocation_counter;
1195 mcs->backedge_counter()->_counter = rec->_backedge_counter;
1196 }
1197 }
1199 bool ciReplay::is_loaded(Method* method) {
1200 if (replay_state == NULL) {
1201 return true;
1202 }
1204 ASSERT_IN_VM;
1205 ResourceMark rm;
1207 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
1208 return rec != NULL;
1209 }
1210 #endif // PRODUCT