Mercurial > hg > graal-compiler
comparison src/share/vm/utilities/debug.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | ba764ed4b6f2 |
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1 /* | |
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_debug.cpp.incl" | |
27 | |
28 #ifndef ASSERT | |
29 # ifdef _DEBUG | |
30 // NOTE: don't turn the lines below into a comment -- if you're getting | |
31 // a compile error here, change the settings to define ASSERT | |
32 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
33 functions that do not slow down the system too much and thus can be left in optimized code. | |
34 On the other hand, the code should not be included in a production version. | |
35 # endif // _DEBUG | |
36 #endif // ASSERT | |
37 | |
38 | |
39 #ifdef _DEBUG | |
40 # ifndef ASSERT | |
41 configuration error: ASSERT must be defined in debug version | |
42 # endif // ASSERT | |
43 #endif // _DEBUG | |
44 | |
45 | |
46 #ifdef PRODUCT | |
47 # if -defined _DEBUG || -defined ASSERT | |
48 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
49 # endif | |
50 #endif // PRODUCT | |
51 | |
52 | |
53 void warning(const char* format, ...) { | |
54 // In case error happens before init or during shutdown | |
55 if (tty == NULL) ostream_init(); | |
56 | |
57 tty->print("%s warning: ", VM_Version::vm_name()); | |
58 va_list ap; | |
59 va_start(ap, format); | |
60 tty->vprint_cr(format, ap); | |
61 va_end(ap); | |
62 if (BreakAtWarning) BREAKPOINT; | |
63 } | |
64 | |
65 #ifndef PRODUCT | |
66 | |
67 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
68 | |
69 static const char* last_file_name = NULL; | |
70 static int last_line_no = -1; | |
71 | |
72 // assert/guarantee/... may happen very early during VM initialization. | |
73 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
74 // example, don't use tty. | |
75 bool assert_is_suppressed(const char* file_name, int line_no) { | |
76 // The following 1-element cache requires that passed-in | |
77 // file names are always only constant literals. | |
78 if (file_name == last_file_name && line_no == last_line_no) return true; | |
79 | |
80 int file_name_len = (int)strlen(file_name); | |
81 char separator = os::file_separator()[0]; | |
82 const char* base_name = strrchr(file_name, separator); | |
83 if (base_name == NULL) | |
84 base_name = file_name; | |
85 | |
86 // scan the SuppressErrorAt option | |
87 const char* cp = SuppressErrorAt; | |
88 for (;;) { | |
89 const char* sfile; | |
90 int sfile_len; | |
91 int sline; | |
92 bool noisy; | |
93 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
94 if ((*cp) == '\0') break; | |
95 sfile = cp; | |
96 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
97 sfile_len = cp - sfile; | |
98 if ((*cp) == ':') cp++; | |
99 sline = 0; | |
100 while ((*cp) != '\0' && isdigit(*cp)) { | |
101 sline *= 10; | |
102 sline += (*cp) - '0'; | |
103 cp++; | |
104 } | |
105 // "file:line!" means the assert suppression is not silent | |
106 noisy = ((*cp) == '!'); | |
107 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
108 // match the line | |
109 if (sline != 0) { | |
110 if (sline != line_no) continue; | |
111 } | |
112 // match the file | |
113 if (sfile_len > 0) { | |
114 const char* look = file_name; | |
115 const char* look_max = file_name + file_name_len - sfile_len; | |
116 const char* foundp; | |
117 bool match = false; | |
118 while (!match | |
119 && (foundp = strchr(look, sfile[0])) != NULL | |
120 && foundp <= look_max) { | |
121 match = true; | |
122 for (int i = 1; i < sfile_len; i++) { | |
123 if (sfile[i] != foundp[i]) { | |
124 match = false; | |
125 break; | |
126 } | |
127 } | |
128 look = foundp + 1; | |
129 } | |
130 if (!match) continue; | |
131 } | |
132 // got a match! | |
133 if (noisy) { | |
134 fdStream out(defaultStream::output_fd()); | |
135 out.print_raw("[error suppressed at "); | |
136 out.print_raw(base_name); | |
137 char buf[16]; | |
138 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
139 out.print_raw_cr(buf); | |
140 } else { | |
141 // update 1-element cache for fast silent matches | |
142 last_file_name = file_name; | |
143 last_line_no = line_no; | |
144 } | |
145 return true; | |
146 } | |
147 | |
148 if (!is_error_reported()) { | |
149 // print a friendly hint: | |
150 fdStream out(defaultStream::output_fd()); | |
151 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
152 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
153 out.print_raw (base_name); | |
154 char buf[16]; | |
155 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
156 out.print_raw_cr(buf); | |
157 } | |
158 return false; | |
159 } | |
160 | |
161 #undef is_token_break | |
162 | |
163 #else | |
164 | |
165 // Place-holder for non-existent suppression check: | |
166 #define assert_is_suppressed(file_name, line_no) (false) | |
167 | |
168 #endif //PRODUCT | |
169 | |
170 void report_assertion_failure(const char* file_name, int line_no, const char* message) { | |
171 if (Debugging || assert_is_suppressed(file_name, line_no)) return; | |
172 VMError err(ThreadLocalStorage::get_thread_slow(), message, file_name, line_no); | |
173 err.report_and_die(); | |
174 } | |
175 | |
176 void report_fatal(const char* file_name, int line_no, const char* message) { | |
177 if (Debugging || assert_is_suppressed(file_name, line_no)) return; | |
178 VMError err(ThreadLocalStorage::get_thread_slow(), message, file_name, line_no); | |
179 err.report_and_die(); | |
180 } | |
181 | |
182 void report_fatal_vararg(const char* file_name, int line_no, const char* format, ...) { | |
183 char buffer[256]; | |
184 va_list ap; | |
185 va_start(ap, format); | |
186 jio_vsnprintf(buffer, sizeof(buffer), format, ap); | |
187 va_end(ap); | |
188 report_fatal(file_name, line_no, buffer); | |
189 } | |
190 | |
191 | |
192 // Used by report_vm_out_of_memory to detect recursion. | |
193 static jint _exiting_out_of_mem = 0; | |
194 | |
195 // Just passing the flow to VMError to handle error | |
196 void report_vm_out_of_memory(const char* file_name, int line_no, size_t size, const char* message) { | |
197 if (Debugging || assert_is_suppressed(file_name, line_no)) return; | |
198 | |
199 // We try to gather additional information for the first out of memory | |
200 // error only; gathering additional data might cause an allocation and a | |
201 // recursive out_of_memory condition. | |
202 | |
203 const jint exiting = 1; | |
204 // If we succeed in changing the value, we're the first one in. | |
205 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
206 | |
207 if (first_time_here) { | |
208 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
209 VMError(thread, size, message, file_name, line_no).report_and_die(); | |
210 } | |
211 vm_abort(); | |
212 } | |
213 | |
214 void report_vm_out_of_memory_vararg(const char* file_name, int line_no, size_t size, const char* format, ...) { | |
215 char buffer[256]; | |
216 va_list ap; | |
217 va_start(ap, format); | |
218 jio_vsnprintf(buffer, sizeof(buffer), format, ap); | |
219 va_end(ap); | |
220 report_vm_out_of_memory(file_name, line_no, size, buffer); | |
221 } | |
222 | |
223 void report_should_not_call(const char* file_name, int line_no) { | |
224 if (Debugging || assert_is_suppressed(file_name, line_no)) return; | |
225 VMError err(ThreadLocalStorage::get_thread_slow(), "ShouldNotCall()", file_name, line_no); | |
226 err.report_and_die(); | |
227 } | |
228 | |
229 | |
230 void report_should_not_reach_here(const char* file_name, int line_no) { | |
231 if (Debugging || assert_is_suppressed(file_name, line_no)) return; | |
232 VMError err(ThreadLocalStorage::get_thread_slow(), "ShouldNotReachHere()", file_name, line_no); | |
233 err.report_and_die(); | |
234 } | |
235 | |
236 | |
237 void report_unimplemented(const char* file_name, int line_no) { | |
238 if (Debugging || assert_is_suppressed(file_name, line_no)) return; | |
239 VMError err(ThreadLocalStorage::get_thread_slow(), "Unimplemented()", file_name, line_no); | |
240 err.report_and_die(); | |
241 } | |
242 | |
243 | |
244 void report_untested(const char* file_name, int line_no, const char* msg) { | |
245 #ifndef PRODUCT | |
246 warning("Untested: %s in %s: %d\n", msg, file_name, line_no); | |
247 #endif // PRODUCT | |
248 } | |
249 | |
250 void report_java_out_of_memory(const char* message) { | |
251 static jint out_of_memory_reported = 0; | |
252 | |
253 // A number of threads may attempt to report OutOfMemoryError at around the | |
254 // same time. To avoid dumping the heap or executing the data collection | |
255 // commands multiple times we just do it once when the first threads reports | |
256 // the error. | |
257 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
258 // create heap dump before OnOutOfMemoryError commands are executed | |
259 if (HeapDumpOnOutOfMemoryError) { | |
260 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
261 HeapDumper::dump_heap(); | |
262 } | |
263 | |
264 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
265 VMError err(message); | |
266 err.report_java_out_of_memory(); | |
267 } | |
268 } | |
269 } | |
270 | |
271 | |
272 extern "C" void ps(); | |
273 | |
274 static bool error_reported = false; | |
275 | |
276 // call this when the VM is dying--it might loosen some asserts | |
277 void set_error_reported() { | |
278 error_reported = true; | |
279 } | |
280 | |
281 bool is_error_reported() { | |
282 return error_reported; | |
283 } | |
284 | |
285 // ------ helper functions for debugging go here ------------ | |
286 | |
287 #ifndef PRODUCT | |
288 // All debug entries should be wrapped with a stack allocated | |
289 // Command object. It makes sure a resource mark is set and | |
290 // flushes the logfile to prevent file sharing problems. | |
291 | |
292 class Command : public StackObj { | |
293 private: | |
294 ResourceMark rm; | |
295 ResetNoHandleMark rnhm; | |
296 HandleMark hm; | |
297 bool debug_save; | |
298 public: | |
299 static int level; | |
300 Command(const char* str) { | |
301 debug_save = Debugging; | |
302 Debugging = true; | |
303 if (level++ > 0) return; | |
304 tty->cr(); | |
305 tty->print_cr("\"Executing %s\"", str); | |
306 } | |
307 | |
308 ~Command() { tty->flush(); Debugging = debug_save; level--; } | |
309 }; | |
310 | |
311 int Command::level = 0; | |
312 | |
313 extern "C" void blob(CodeBlob* cb) { | |
314 Command c("blob"); | |
315 cb->print(); | |
316 } | |
317 | |
318 | |
319 extern "C" void dump_vtable(address p) { | |
320 Command c("dump_vtable"); | |
321 klassOop k = (klassOop)p; | |
322 instanceKlass::cast(k)->vtable()->print(); | |
323 } | |
324 | |
325 | |
326 extern "C" void nm(intptr_t p) { | |
327 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
328 Command c("nm"); | |
329 CodeBlob* cb = CodeCache::find_blob((address)p); | |
330 if (cb == NULL) { | |
331 tty->print_cr("NULL"); | |
332 } else { | |
333 cb->print(); | |
334 } | |
335 } | |
336 | |
337 | |
338 extern "C" void disnm(intptr_t p) { | |
339 Command c("disnm"); | |
340 CodeBlob* cb = CodeCache::find_blob((address) p); | |
341 cb->print(); | |
342 Disassembler::decode(cb); | |
343 } | |
344 | |
345 | |
346 extern "C" void printnm(intptr_t p) { | |
347 char buffer[256]; | |
348 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
349 Command c(buffer); | |
350 CodeBlob* cb = CodeCache::find_blob((address) p); | |
351 if (cb->is_nmethod()) { | |
352 nmethod* nm = (nmethod*)cb; | |
353 nm->print_nmethod(true); | |
354 } | |
355 } | |
356 | |
357 | |
358 extern "C" void universe() { | |
359 Command c("universe"); | |
360 Universe::print(); | |
361 } | |
362 | |
363 | |
364 extern "C" void verify() { | |
365 // try to run a verify on the entire system | |
366 // note: this may not be safe if we're not at a safepoint; for debugging, | |
367 // this manipulates the safepoint settings to avoid assertion failures | |
368 Command c("universe verify"); | |
369 bool safe = SafepointSynchronize::is_at_safepoint(); | |
370 if (!safe) { | |
371 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
372 SafepointSynchronize::set_is_at_safepoint(); | |
373 } | |
374 // Ensure Eden top is correct before verification | |
375 Universe::heap()->prepare_for_verify(); | |
376 Universe::verify(true); | |
377 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
378 } | |
379 | |
380 | |
381 extern "C" void pp(void* p) { | |
382 Command c("pp"); | |
383 FlagSetting fl(PrintVMMessages, true); | |
384 if (Universe::heap()->is_in(p)) { | |
385 oop obj = oop(p); | |
386 obj->print(); | |
387 } else { | |
388 tty->print("%#p", p); | |
389 } | |
390 } | |
391 | |
392 | |
393 // pv: print vm-printable object | |
394 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
395 extern "C" void findpc(intptr_t x); | |
396 | |
397 extern "C" void ps() { // print stack | |
398 Command c("ps"); | |
399 | |
400 | |
401 // Prints the stack of the current Java thread | |
402 JavaThread* p = JavaThread::active(); | |
403 tty->print(" for thread: "); | |
404 p->print(); | |
405 tty->cr(); | |
406 | |
407 if (p->has_last_Java_frame()) { | |
408 // If the last_Java_fp is set we are in C land and | |
409 // can call the standard stack_trace function. | |
410 p->trace_stack(); | |
411 } else { | |
412 frame f = os::current_frame(); | |
413 RegisterMap reg_map(p); | |
414 f = f.sender(®_map); | |
415 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
416 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
417 pd_ps(f); | |
418 } | |
419 | |
420 } | |
421 | |
422 | |
423 extern "C" void psf() { // print stack frames | |
424 { | |
425 Command c("psf"); | |
426 JavaThread* p = JavaThread::active(); | |
427 tty->print(" for thread: "); | |
428 p->print(); | |
429 tty->cr(); | |
430 if (p->has_last_Java_frame()) { | |
431 p->trace_frames(); | |
432 } | |
433 } | |
434 } | |
435 | |
436 | |
437 extern "C" void threads() { | |
438 Command c("threads"); | |
439 Threads::print(false, true); | |
440 } | |
441 | |
442 | |
443 extern "C" void psd() { | |
444 Command c("psd"); | |
445 SystemDictionary::print(); | |
446 } | |
447 | |
448 | |
449 extern "C" void safepoints() { | |
450 Command c("safepoints"); | |
451 SafepointSynchronize::print_state(); | |
452 } | |
453 | |
454 | |
455 extern "C" void pss() { // print all stacks | |
456 Command c("pss"); | |
457 Threads::print(true, true); | |
458 } | |
459 | |
460 | |
461 extern "C" void debug() { // to set things up for compiler debugging | |
462 Command c("debug"); | |
463 WizardMode = true; | |
464 PrintVMMessages = PrintCompilation = true; | |
465 PrintInlining = PrintAssembly = true; | |
466 tty->flush(); | |
467 } | |
468 | |
469 | |
470 extern "C" void ndebug() { // undo debug() | |
471 Command c("ndebug"); | |
472 PrintCompilation = false; | |
473 PrintInlining = PrintAssembly = false; | |
474 tty->flush(); | |
475 } | |
476 | |
477 | |
478 extern "C" void flush() { | |
479 Command c("flush"); | |
480 tty->flush(); | |
481 } | |
482 | |
483 | |
484 extern "C" void events() { | |
485 Command c("events"); | |
486 Events::print_last(tty, 50); | |
487 } | |
488 | |
489 | |
490 extern "C" void nevents(int n) { | |
491 Command c("events"); | |
492 Events::print_last(tty, n); | |
493 } | |
494 | |
495 | |
496 // Given a heap address that was valid before the most recent GC, if | |
497 // the oop that used to contain it is still live, prints the new | |
498 // location of the oop and the address. Useful for tracking down | |
499 // certain kinds of naked oop and oop map bugs. | |
500 extern "C" void pnl(intptr_t old_heap_addr) { | |
501 // Print New Location of old heap address | |
502 Command c("pnl"); | |
503 #ifndef VALIDATE_MARK_SWEEP | |
504 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
505 #else | |
506 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
507 #endif | |
508 } | |
509 | |
510 | |
511 extern "C" methodOop findm(intptr_t pc) { | |
512 Command c("findm"); | |
513 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
514 return (nm == NULL) ? (methodOop)NULL : nm->method(); | |
515 } | |
516 | |
517 | |
518 extern "C" nmethod* findnm(intptr_t addr) { | |
519 Command c("findnm"); | |
520 return CodeCache::find_nmethod((address)addr); | |
521 } | |
522 | |
523 static address same_page(address x, address y) { | |
524 intptr_t page_bits = -os::vm_page_size(); | |
525 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
526 return x; | |
527 } else if (x > y) { | |
528 return (address)(intptr_t(y) | ~page_bits) + 1; | |
529 } else { | |
530 return (address)(intptr_t(y) & page_bits); | |
531 } | |
532 } | |
533 | |
534 | |
535 static void find(intptr_t x, bool print_pc) { | |
536 address addr = (address)x; | |
537 | |
538 CodeBlob* b = CodeCache::find_blob_unsafe(addr); | |
539 if (b != NULL) { | |
540 if (b->is_buffer_blob()) { | |
541 // the interpreter is generated into a buffer blob | |
542 InterpreterCodelet* i = Interpreter::codelet_containing(addr); | |
543 if (i != NULL) { | |
544 i->print(); | |
545 return; | |
546 } | |
547 if (Interpreter::contains(addr)) { | |
548 tty->print_cr(INTPTR_FORMAT " is pointing into interpreter code (not bytecode specific)", addr); | |
549 return; | |
550 } | |
551 // | |
552 if (AdapterHandlerLibrary::contains(b)) { | |
553 AdapterHandlerLibrary::print_handler(b); | |
554 } | |
555 // the stubroutines are generated into a buffer blob | |
556 StubCodeDesc* d = StubCodeDesc::desc_for(addr); | |
557 if (d != NULL) { | |
558 d->print(); | |
559 if (print_pc) tty->cr(); | |
560 return; | |
561 } | |
562 if (StubRoutines::contains(addr)) { | |
563 tty->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", addr); | |
564 return; | |
565 } | |
566 // the InlineCacheBuffer is using stubs generated into a buffer blob | |
567 if (InlineCacheBuffer::contains(addr)) { | |
568 tty->print_cr(INTPTR_FORMAT "is pointing into InlineCacheBuffer", addr); | |
569 return; | |
570 } | |
571 VtableStub* v = VtableStubs::stub_containing(addr); | |
572 if (v != NULL) { | |
573 v->print(); | |
574 return; | |
575 } | |
576 } | |
577 if (print_pc && b->is_nmethod()) { | |
578 ResourceMark rm; | |
579 tty->print("%#p: Compiled ", addr); | |
580 ((nmethod*)b)->method()->print_value_on(tty); | |
581 tty->print(" = (CodeBlob*)" INTPTR_FORMAT, b); | |
582 tty->cr(); | |
583 return; | |
584 } | |
585 if ( b->is_nmethod()) { | |
586 if (b->is_zombie()) { | |
587 tty->print_cr(INTPTR_FORMAT " is zombie nmethod", b); | |
588 } else if (b->is_not_entrant()) { | |
589 tty->print_cr(INTPTR_FORMAT " is non-entrant nmethod", b); | |
590 } | |
591 } | |
592 b->print(); | |
593 return; | |
594 } | |
595 | |
596 if (Universe::heap()->is_in_reserved(addr)) { | |
597 HeapWord* p = Universe::heap()->block_start(addr); | |
598 bool print = false; | |
599 // If we couldn't find it it just may mean that heap wasn't parseable | |
600 // See if we were just given an oop directly | |
601 if (p != NULL && Universe::heap()->block_is_obj(p)) { | |
602 print = true; | |
603 } else if (p == NULL && ((oopDesc*)addr)->is_oop()) { | |
604 p = (HeapWord*) addr; | |
605 print = true; | |
606 } | |
607 if (print) { | |
608 oop(p)->print(); | |
609 if (p != (HeapWord*)x && oop(p)->is_constMethod() && | |
610 constMethodOop(p)->contains(addr)) { | |
611 Thread *thread = Thread::current(); | |
612 HandleMark hm(thread); | |
613 methodHandle mh (thread, constMethodOop(p)->method()); | |
614 if (!mh->is_native()) { | |
615 tty->print_cr("bci_from(%p) = %d; print_codes():", | |
616 addr, mh->bci_from(address(x))); | |
617 mh->print_codes(); | |
618 } | |
619 } | |
620 return; | |
621 } | |
622 } | |
623 if (JNIHandles::is_global_handle((jobject) addr)) { | |
624 tty->print_cr(INTPTR_FORMAT "is a global jni handle", addr); | |
625 return; | |
626 } | |
627 if (JNIHandles::is_weak_global_handle((jobject) addr)) { | |
628 tty->print_cr(INTPTR_FORMAT "is a weak global jni handle", addr); | |
629 return; | |
630 } | |
631 if (JNIHandleBlock::any_contains((jobject) addr)) { | |
632 tty->print_cr(INTPTR_FORMAT "is a local jni handle", addr); | |
633 return; | |
634 } | |
635 | |
636 for(JavaThread *thread = Threads::first(); thread; thread = thread->next()) { | |
637 // Check for priviledge stack | |
638 if (thread->privileged_stack_top() != NULL && thread->privileged_stack_top()->contains(addr)) { | |
639 tty->print_cr(INTPTR_FORMAT "is pointing into the priviledge stack for thread: " INTPTR_FORMAT, addr, thread); | |
640 return; | |
641 } | |
642 // If the addr is a java thread print information about that. | |
643 if (addr == (address)thread) { | |
644 thread->print(); | |
645 return; | |
646 } | |
647 } | |
648 | |
649 // Try an OS specific find | |
650 if (os::find(addr)) { | |
651 return; | |
652 } | |
653 | |
654 if (print_pc) { | |
655 tty->print_cr(INTPTR_FORMAT ": probably in C++ code; check debugger", addr); | |
656 Disassembler::decode(same_page(addr-40,addr),same_page(addr+40,addr)); | |
657 return; | |
658 } | |
659 | |
660 tty->print_cr(INTPTR_FORMAT "is pointing to unknown location", addr); | |
661 } | |
662 | |
663 | |
664 class LookForRefInGenClosure : public OopsInGenClosure { | |
665 public: | |
666 oop target; | |
667 void do_oop(oop* o) { | |
668 if (o != NULL && *o == target) { | |
669 tty->print_cr("0x%08x", o); | |
670 } | |
671 } | |
672 }; | |
673 | |
674 | |
675 class LookForRefInObjectClosure : public ObjectClosure { | |
676 private: | |
677 LookForRefInGenClosure look_in_object; | |
678 public: | |
679 LookForRefInObjectClosure(oop target) { look_in_object.target = target; } | |
680 void do_object(oop obj) { | |
681 obj->oop_iterate(&look_in_object); | |
682 } | |
683 }; | |
684 | |
685 | |
686 static void findref(intptr_t x) { | |
687 GenCollectedHeap *gch = GenCollectedHeap::heap(); | |
688 LookForRefInGenClosure lookFor; | |
689 lookFor.target = (oop) x; | |
690 LookForRefInObjectClosure look_in_object((oop) x); | |
691 | |
692 tty->print_cr("Searching heap:"); | |
693 gch->object_iterate(&look_in_object); | |
694 | |
695 tty->print_cr("Searching strong roots:"); | |
696 Universe::oops_do(&lookFor, false); | |
697 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles | |
698 Threads::oops_do(&lookFor); | |
699 ObjectSynchronizer::oops_do(&lookFor); | |
700 //FlatProfiler::oops_do(&lookFor); | |
701 SystemDictionary::oops_do(&lookFor); | |
702 | |
703 tty->print_cr("Done."); | |
704 } | |
705 | |
706 class FindClassObjectClosure: public ObjectClosure { | |
707 private: | |
708 const char* _target; | |
709 public: | |
710 FindClassObjectClosure(const char name[]) { _target = name; } | |
711 | |
712 virtual void do_object(oop obj) { | |
713 if (obj->is_klass()) { | |
714 Klass* k = klassOop(obj)->klass_part(); | |
715 if (k->name() != NULL) { | |
716 ResourceMark rm; | |
717 const char* ext = k->external_name(); | |
718 if ( strcmp(_target, ext) == 0 ) { | |
719 tty->print_cr("Found " INTPTR_FORMAT, obj); | |
720 obj->print(); | |
721 } | |
722 } | |
723 } | |
724 } | |
725 }; | |
726 | |
727 // | |
728 extern "C" void findclass(const char name[]) { | |
729 Command c("findclass"); | |
730 if (name != NULL) { | |
731 tty->print_cr("Finding class %s -> ", name); | |
732 FindClassObjectClosure srch(name); | |
733 Universe::heap()->permanent_object_iterate(&srch); | |
734 } | |
735 } | |
736 | |
737 // Another interface that isn't ambiguous in dbx. | |
738 // Can we someday rename the other find to hsfind? | |
739 extern "C" void hsfind(intptr_t x) { | |
740 Command c("hsfind"); | |
741 find(x, false); | |
742 } | |
743 | |
744 | |
745 extern "C" void hsfindref(intptr_t x) { | |
746 Command c("hsfindref"); | |
747 findref(x); | |
748 } | |
749 | |
750 extern "C" void find(intptr_t x) { | |
751 Command c("find"); | |
752 find(x, false); | |
753 } | |
754 | |
755 | |
756 extern "C" void findpc(intptr_t x) { | |
757 Command c("findpc"); | |
758 find(x, true); | |
759 } | |
760 | |
761 | |
762 // int versions of all methods to avoid having to type type casts in the debugger | |
763 | |
764 void pp(intptr_t p) { pp((void*)p); } | |
765 void pp(oop p) { pp((void*)p); } | |
766 | |
767 void help() { | |
768 Command c("help"); | |
769 tty->print_cr("basic"); | |
770 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
771 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
772 tty->print_cr(" ps() - print current thread stack"); | |
773 tty->print_cr(" pss() - print all thread stacks"); | |
774 tty->print_cr(" pm(int pc) - print methodOop given compiled PC"); | |
775 tty->print_cr(" findm(intptr_t pc) - finds methodOop"); | |
776 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); | |
777 | |
778 tty->print_cr("misc."); | |
779 tty->print_cr(" flush() - flushes the log file"); | |
780 tty->print_cr(" events() - dump last 50 events"); | |
781 | |
782 | |
783 tty->print_cr("compiler debugging"); | |
784 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
785 tty->print_cr(" ndebug() - undo debug"); | |
786 } | |
787 | |
788 #if 0 | |
789 | |
790 // BobV's command parser for debugging on windows when nothing else works. | |
791 | |
792 enum CommandID { | |
793 CMDID_HELP, | |
794 CMDID_QUIT, | |
795 CMDID_HSFIND, | |
796 CMDID_PSS, | |
797 CMDID_PS, | |
798 CMDID_PSF, | |
799 CMDID_FINDM, | |
800 CMDID_FINDNM, | |
801 CMDID_PP, | |
802 CMDID_BPT, | |
803 CMDID_EXIT, | |
804 CMDID_VERIFY, | |
805 CMDID_THREADS, | |
806 CMDID_ILLEGAL = 99 | |
807 }; | |
808 | |
809 struct CommandParser { | |
810 char *name; | |
811 CommandID code; | |
812 char *description; | |
813 }; | |
814 | |
815 struct CommandParser CommandList[] = { | |
816 (char *)"help", CMDID_HELP, " Dump this list", | |
817 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
818 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
819 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
820 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
821 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
822 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC", | |
823 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", | |
824 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
825 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
826 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
827 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
828 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
829 (char *)0, CMDID_ILLEGAL | |
830 }; | |
831 | |
832 | |
833 // get_debug_command() | |
834 // | |
835 // Read a command from standard input. | |
836 // This is useful when you have a debugger | |
837 // which doesn't support calling into functions. | |
838 // | |
839 void get_debug_command() | |
840 { | |
841 ssize_t count; | |
842 int i,j; | |
843 bool gotcommand; | |
844 intptr_t addr; | |
845 char buffer[256]; | |
846 nmethod *nm; | |
847 methodOop m; | |
848 | |
849 tty->print_cr("You have entered the diagnostic command interpreter"); | |
850 tty->print("The supported commands are:\n"); | |
851 for ( i=0; ; i++ ) { | |
852 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
853 break; | |
854 tty->print_cr(" %s \n", CommandList[i].name ); | |
855 } | |
856 | |
857 while ( 1 ) { | |
858 gotcommand = false; | |
859 tty->print("Please enter a command: "); | |
860 count = scanf("%s", buffer) ; | |
861 if ( count >=0 ) { | |
862 for ( i=0; ; i++ ) { | |
863 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
864 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
865 break; | |
866 } | |
867 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
868 gotcommand = true; | |
869 switch ( CommandList[i].code ) { | |
870 case CMDID_PS: | |
871 ps(); | |
872 break; | |
873 case CMDID_PSS: | |
874 pss(); | |
875 break; | |
876 case CMDID_PSF: | |
877 psf(); | |
878 break; | |
879 case CMDID_FINDM: | |
880 tty->print("Please enter the hex addr to pass to findm: "); | |
881 scanf("%I64X", &addr); | |
882 m = (methodOop)findm(addr); | |
883 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); | |
884 break; | |
885 case CMDID_FINDNM: | |
886 tty->print("Please enter the hex addr to pass to findnm: "); | |
887 scanf("%I64X", &addr); | |
888 nm = (nmethod*)findnm(addr); | |
889 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
890 break; | |
891 case CMDID_PP: | |
892 tty->print("Please enter the hex addr to pass to pp: "); | |
893 scanf("%I64X", &addr); | |
894 pp((void*)addr); | |
895 break; | |
896 case CMDID_EXIT: | |
897 exit(0); | |
898 case CMDID_HELP: | |
899 tty->print("Here are the supported commands: "); | |
900 for ( j=0; ; j++ ) { | |
901 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
902 break; | |
903 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
904 CommandList[j].description ); | |
905 } | |
906 break; | |
907 case CMDID_QUIT: | |
908 return; | |
909 break; | |
910 case CMDID_BPT: | |
911 BREAKPOINT; | |
912 break; | |
913 case CMDID_VERIFY: | |
914 verify();; | |
915 break; | |
916 case CMDID_THREADS: | |
917 threads();; | |
918 break; | |
919 case CMDID_HSFIND: | |
920 tty->print("Please enter the hex addr to pass to hsfind: "); | |
921 scanf("%I64X", &addr); | |
922 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
923 hsfind(addr); | |
924 break; | |
925 default: | |
926 case CMDID_ILLEGAL: | |
927 break; | |
928 } | |
929 } | |
930 } | |
931 } | |
932 } | |
933 } | |
934 #endif | |
935 | |
936 #endif // PRODUCT |