Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 1891:9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
Summary: Turn CDS off if compressed oops is on
Reviewed-by: ysr, kvn, jcoomes, phh
author | iveresov |
---|---|
date | Tue, 02 Nov 2010 16:02:46 -0700 |
parents | c77b5c592eab |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 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, ...) { | |
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54 if (PrintWarnings) { |
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55 // In case error happens before init or during shutdown |
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56 if (tty == NULL) ostream_init(); |
0 | 57 |
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58 tty->print("%s warning: ", VM_Version::vm_name()); |
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59 va_list ap; |
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60 va_start(ap, format); |
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61 tty->vprint_cr(format, ap); |
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62 va_end(ap); |
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63 } |
0 | 64 if (BreakAtWarning) BREAKPOINT; |
65 } | |
66 | |
67 #ifndef PRODUCT | |
68 | |
69 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
70 | |
71 static const char* last_file_name = NULL; | |
72 static int last_line_no = -1; | |
73 | |
74 // assert/guarantee/... may happen very early during VM initialization. | |
75 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
76 // example, don't use tty. | |
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77 bool error_is_suppressed(const char* file_name, int line_no) { |
0 | 78 // The following 1-element cache requires that passed-in |
79 // file names are always only constant literals. | |
80 if (file_name == last_file_name && line_no == last_line_no) return true; | |
81 | |
82 int file_name_len = (int)strlen(file_name); | |
83 char separator = os::file_separator()[0]; | |
84 const char* base_name = strrchr(file_name, separator); | |
85 if (base_name == NULL) | |
86 base_name = file_name; | |
87 | |
88 // scan the SuppressErrorAt option | |
89 const char* cp = SuppressErrorAt; | |
90 for (;;) { | |
91 const char* sfile; | |
92 int sfile_len; | |
93 int sline; | |
94 bool noisy; | |
95 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
96 if ((*cp) == '\0') break; | |
97 sfile = cp; | |
98 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
99 sfile_len = cp - sfile; | |
100 if ((*cp) == ':') cp++; | |
101 sline = 0; | |
102 while ((*cp) != '\0' && isdigit(*cp)) { | |
103 sline *= 10; | |
104 sline += (*cp) - '0'; | |
105 cp++; | |
106 } | |
107 // "file:line!" means the assert suppression is not silent | |
108 noisy = ((*cp) == '!'); | |
109 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
110 // match the line | |
111 if (sline != 0) { | |
112 if (sline != line_no) continue; | |
113 } | |
114 // match the file | |
115 if (sfile_len > 0) { | |
116 const char* look = file_name; | |
117 const char* look_max = file_name + file_name_len - sfile_len; | |
118 const char* foundp; | |
119 bool match = false; | |
120 while (!match | |
121 && (foundp = strchr(look, sfile[0])) != NULL | |
122 && foundp <= look_max) { | |
123 match = true; | |
124 for (int i = 1; i < sfile_len; i++) { | |
125 if (sfile[i] != foundp[i]) { | |
126 match = false; | |
127 break; | |
128 } | |
129 } | |
130 look = foundp + 1; | |
131 } | |
132 if (!match) continue; | |
133 } | |
134 // got a match! | |
135 if (noisy) { | |
136 fdStream out(defaultStream::output_fd()); | |
137 out.print_raw("[error suppressed at "); | |
138 out.print_raw(base_name); | |
139 char buf[16]; | |
140 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
141 out.print_raw_cr(buf); | |
142 } else { | |
143 // update 1-element cache for fast silent matches | |
144 last_file_name = file_name; | |
145 last_line_no = line_no; | |
146 } | |
147 return true; | |
148 } | |
149 | |
150 if (!is_error_reported()) { | |
151 // print a friendly hint: | |
152 fdStream out(defaultStream::output_fd()); | |
153 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
154 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
155 out.print_raw (base_name); | |
156 char buf[16]; | |
157 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
158 out.print_raw_cr(buf); | |
159 } | |
160 return false; | |
161 } | |
162 | |
163 #undef is_token_break | |
164 | |
165 #else | |
166 | |
167 // Place-holder for non-existent suppression check: | |
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168 #define error_is_suppressed(file_name, line_no) (false) |
0 | 169 |
170 #endif //PRODUCT | |
171 | |
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172 void report_vm_error(const char* file, int line, const char* error_msg, |
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173 const char* detail_msg) |
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174 { |
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175 if (Debugging || error_is_suppressed(file, line)) return; |
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176 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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177 VMError err(thread, file, line, error_msg, detail_msg); |
0 | 178 err.report_and_die(); |
179 } | |
180 | |
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181 void report_fatal(const char* file, int line, const char* message) |
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182 { |
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183 report_vm_error(file, line, "fatal error", message); |
0 | 184 } |
185 | |
186 // Used by report_vm_out_of_memory to detect recursion. | |
187 static jint _exiting_out_of_mem = 0; | |
188 | |
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189 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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190 const char* message) { |
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191 if (Debugging || error_is_suppressed(file, line)) return; |
0 | 192 |
193 // We try to gather additional information for the first out of memory | |
194 // error only; gathering additional data might cause an allocation and a | |
195 // recursive out_of_memory condition. | |
196 | |
197 const jint exiting = 1; | |
198 // If we succeed in changing the value, we're the first one in. | |
199 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
200 | |
201 if (first_time_here) { | |
202 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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203 VMError(thread, file, line, size, message).report_and_die(); |
0 | 204 } |
227
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205 |
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206 // Dump core and abort |
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207 vm_abort(true); |
0 | 208 } |
209 | |
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210 void report_should_not_call(const char* file, int line) { |
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211 report_vm_error(file, line, "ShouldNotCall()"); |
0 | 212 } |
213 | |
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214 void report_should_not_reach_here(const char* file, int line) { |
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215 report_vm_error(file, line, "ShouldNotReachHere()"); |
0 | 216 } |
217 | |
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218 void report_unimplemented(const char* file, int line) { |
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219 report_vm_error(file, line, "Unimplemented()"); |
0 | 220 } |
221 | |
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222 void report_untested(const char* file, int line, const char* message) { |
0 | 223 #ifndef PRODUCT |
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224 warning("Untested: %s in %s: %d\n", message, file, line); |
0 | 225 #endif // PRODUCT |
226 } | |
227 | |
228 void report_java_out_of_memory(const char* message) { | |
229 static jint out_of_memory_reported = 0; | |
230 | |
231 // A number of threads may attempt to report OutOfMemoryError at around the | |
232 // same time. To avoid dumping the heap or executing the data collection | |
233 // commands multiple times we just do it once when the first threads reports | |
234 // the error. | |
235 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
236 // create heap dump before OnOutOfMemoryError commands are executed | |
237 if (HeapDumpOnOutOfMemoryError) { | |
238 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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239 HeapDumper::dump_heap_from_oome(); |
0 | 240 } |
241 | |
242 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
243 VMError err(message); | |
244 err.report_java_out_of_memory(); | |
245 } | |
246 } | |
247 } | |
248 | |
249 | |
250 extern "C" void ps(); | |
251 | |
252 static bool error_reported = false; | |
253 | |
254 // call this when the VM is dying--it might loosen some asserts | |
255 void set_error_reported() { | |
256 error_reported = true; | |
257 } | |
258 | |
259 bool is_error_reported() { | |
260 return error_reported; | |
261 } | |
262 | |
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263 #ifndef PRODUCT |
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264 #include <signal.h> |
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265 |
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266 void test_error_handler(size_t test_num) |
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267 { |
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268 if (test_num == 0) return; |
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269 |
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270 // If asserts are disabled, use the corresponding guarantee instead. |
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271 size_t n = test_num; |
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272 NOT_DEBUG(if (n <= 2) n += 2); |
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273 |
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274 const char* const str = "hello"; |
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275 const size_t num = (size_t)os::vm_page_size(); |
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276 |
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277 const char* const eol = os::line_separator(); |
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278 const char* const msg = "this message should be truncated during formatting"; |
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279 |
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280 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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281 switch (n) { |
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282 case 1: assert(str == NULL, "expected null"); |
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283 case 2: assert(num == 1023 && *str == 'X', |
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284 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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285 case 3: guarantee(str == NULL, "expected null"); |
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286 case 4: guarantee(num == 1023 && *str == 'X', |
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287 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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288 case 5: fatal("expected null"); |
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289 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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290 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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291 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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292 "%s%s# %s%s# %s%s# %s%s# %s", |
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293 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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294 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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295 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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296 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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297 case 9: ShouldNotCallThis(); |
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298 case 10: ShouldNotReachHere(); |
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299 case 11: Unimplemented(); |
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300 // This is last because it does not generate an hs_err* file on Windows. |
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301 case 12: os::signal_raise(SIGSEGV); |
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302 |
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303 default: ShouldNotReachHere(); |
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304 } |
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305 } |
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306 #endif // #ifndef PRODUCT |
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307 |
0 | 308 // ------ helper functions for debugging go here ------------ |
309 | |
310 #ifndef PRODUCT | |
311 // All debug entries should be wrapped with a stack allocated | |
312 // Command object. It makes sure a resource mark is set and | |
313 // flushes the logfile to prevent file sharing problems. | |
314 | |
315 class Command : public StackObj { | |
316 private: | |
317 ResourceMark rm; | |
318 ResetNoHandleMark rnhm; | |
319 HandleMark hm; | |
320 bool debug_save; | |
321 public: | |
322 static int level; | |
323 Command(const char* str) { | |
324 debug_save = Debugging; | |
325 Debugging = true; | |
326 if (level++ > 0) return; | |
327 tty->cr(); | |
328 tty->print_cr("\"Executing %s\"", str); | |
329 } | |
330 | |
331 ~Command() { tty->flush(); Debugging = debug_save; level--; } | |
332 }; | |
333 | |
334 int Command::level = 0; | |
335 | |
336 extern "C" void blob(CodeBlob* cb) { | |
337 Command c("blob"); | |
338 cb->print(); | |
339 } | |
340 | |
341 | |
342 extern "C" void dump_vtable(address p) { | |
343 Command c("dump_vtable"); | |
344 klassOop k = (klassOop)p; | |
345 instanceKlass::cast(k)->vtable()->print(); | |
346 } | |
347 | |
348 | |
349 extern "C" void nm(intptr_t p) { | |
350 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
351 Command c("nm"); | |
352 CodeBlob* cb = CodeCache::find_blob((address)p); | |
353 if (cb == NULL) { | |
354 tty->print_cr("NULL"); | |
355 } else { | |
356 cb->print(); | |
357 } | |
358 } | |
359 | |
360 | |
361 extern "C" void disnm(intptr_t p) { | |
362 Command c("disnm"); | |
363 CodeBlob* cb = CodeCache::find_blob((address) p); | |
364 cb->print(); | |
365 Disassembler::decode(cb); | |
366 } | |
367 | |
368 | |
369 extern "C" void printnm(intptr_t p) { | |
370 char buffer[256]; | |
371 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
372 Command c(buffer); | |
373 CodeBlob* cb = CodeCache::find_blob((address) p); | |
374 if (cb->is_nmethod()) { | |
375 nmethod* nm = (nmethod*)cb; | |
376 nm->print_nmethod(true); | |
377 } | |
378 } | |
379 | |
380 | |
381 extern "C" void universe() { | |
382 Command c("universe"); | |
383 Universe::print(); | |
384 } | |
385 | |
386 | |
387 extern "C" void verify() { | |
388 // try to run a verify on the entire system | |
389 // note: this may not be safe if we're not at a safepoint; for debugging, | |
390 // this manipulates the safepoint settings to avoid assertion failures | |
391 Command c("universe verify"); | |
392 bool safe = SafepointSynchronize::is_at_safepoint(); | |
393 if (!safe) { | |
394 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
395 SafepointSynchronize::set_is_at_safepoint(); | |
396 } | |
397 // Ensure Eden top is correct before verification | |
398 Universe::heap()->prepare_for_verify(); | |
399 Universe::verify(true); | |
400 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
401 } | |
402 | |
403 | |
404 extern "C" void pp(void* p) { | |
405 Command c("pp"); | |
406 FlagSetting fl(PrintVMMessages, true); | |
407 if (Universe::heap()->is_in(p)) { | |
408 oop obj = oop(p); | |
409 obj->print(); | |
410 } else { | |
411 tty->print("%#p", p); | |
412 } | |
413 } | |
414 | |
415 | |
416 // pv: print vm-printable object | |
417 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
418 extern "C" void findpc(intptr_t x); | |
419 | |
420 extern "C" void ps() { // print stack | |
421 Command c("ps"); | |
422 | |
423 | |
424 // Prints the stack of the current Java thread | |
425 JavaThread* p = JavaThread::active(); | |
426 tty->print(" for thread: "); | |
427 p->print(); | |
428 tty->cr(); | |
429 | |
430 if (p->has_last_Java_frame()) { | |
431 // If the last_Java_fp is set we are in C land and | |
432 // can call the standard stack_trace function. | |
433 p->trace_stack(); | |
434 } else { | |
435 frame f = os::current_frame(); | |
436 RegisterMap reg_map(p); | |
437 f = f.sender(®_map); | |
438 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
439 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
440 pd_ps(f); | |
441 } | |
442 | |
443 } | |
444 | |
445 | |
446 extern "C" void psf() { // print stack frames | |
447 { | |
448 Command c("psf"); | |
449 JavaThread* p = JavaThread::active(); | |
450 tty->print(" for thread: "); | |
451 p->print(); | |
452 tty->cr(); | |
453 if (p->has_last_Java_frame()) { | |
454 p->trace_frames(); | |
455 } | |
456 } | |
457 } | |
458 | |
459 | |
460 extern "C" void threads() { | |
461 Command c("threads"); | |
462 Threads::print(false, true); | |
463 } | |
464 | |
465 | |
466 extern "C" void psd() { | |
467 Command c("psd"); | |
468 SystemDictionary::print(); | |
469 } | |
470 | |
471 | |
472 extern "C" void safepoints() { | |
473 Command c("safepoints"); | |
474 SafepointSynchronize::print_state(); | |
475 } | |
476 | |
477 | |
478 extern "C" void pss() { // print all stacks | |
479 Command c("pss"); | |
480 Threads::print(true, true); | |
481 } | |
482 | |
483 | |
484 extern "C" void debug() { // to set things up for compiler debugging | |
485 Command c("debug"); | |
486 WizardMode = true; | |
487 PrintVMMessages = PrintCompilation = true; | |
488 PrintInlining = PrintAssembly = true; | |
489 tty->flush(); | |
490 } | |
491 | |
492 | |
493 extern "C" void ndebug() { // undo debug() | |
494 Command c("ndebug"); | |
495 PrintCompilation = false; | |
496 PrintInlining = PrintAssembly = false; | |
497 tty->flush(); | |
498 } | |
499 | |
500 | |
501 extern "C" void flush() { | |
502 Command c("flush"); | |
503 tty->flush(); | |
504 } | |
505 | |
506 | |
507 extern "C" void events() { | |
508 Command c("events"); | |
509 Events::print_last(tty, 50); | |
510 } | |
511 | |
512 | |
513 extern "C" void nevents(int n) { | |
514 Command c("events"); | |
515 Events::print_last(tty, n); | |
516 } | |
517 | |
518 | |
519 // Given a heap address that was valid before the most recent GC, if | |
520 // the oop that used to contain it is still live, prints the new | |
521 // location of the oop and the address. Useful for tracking down | |
522 // certain kinds of naked oop and oop map bugs. | |
523 extern "C" void pnl(intptr_t old_heap_addr) { | |
524 // Print New Location of old heap address | |
525 Command c("pnl"); | |
526 #ifndef VALIDATE_MARK_SWEEP | |
527 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
528 #else | |
529 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
530 #endif | |
531 } | |
532 | |
533 | |
534 extern "C" methodOop findm(intptr_t pc) { | |
535 Command c("findm"); | |
536 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
537 return (nm == NULL) ? (methodOop)NULL : nm->method(); | |
538 } | |
539 | |
540 | |
541 extern "C" nmethod* findnm(intptr_t addr) { | |
542 Command c("findnm"); | |
543 return CodeCache::find_nmethod((address)addr); | |
544 } | |
545 | |
546 static address same_page(address x, address y) { | |
547 intptr_t page_bits = -os::vm_page_size(); | |
548 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
549 return x; | |
550 } else if (x > y) { | |
551 return (address)(intptr_t(y) | ~page_bits) + 1; | |
552 } else { | |
553 return (address)(intptr_t(y) & page_bits); | |
554 } | |
555 } | |
556 | |
557 class LookForRefInGenClosure : public OopsInGenClosure { | |
558 public: | |
559 oop target; | |
560 void do_oop(oop* o) { | |
561 if (o != NULL && *o == target) { | |
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562 tty->print_cr(INTPTR_FORMAT, o); |
0 | 563 } |
564 } | |
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565 void do_oop(narrowOop* o) { ShouldNotReachHere(); } |
0 | 566 }; |
567 | |
568 | |
569 class LookForRefInObjectClosure : public ObjectClosure { | |
570 private: | |
571 LookForRefInGenClosure look_in_object; | |
572 public: | |
573 LookForRefInObjectClosure(oop target) { look_in_object.target = target; } | |
574 void do_object(oop obj) { | |
575 obj->oop_iterate(&look_in_object); | |
576 } | |
577 }; | |
578 | |
579 | |
580 static void findref(intptr_t x) { | |
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581 CollectedHeap *ch = Universe::heap(); |
0 | 582 LookForRefInGenClosure lookFor; |
583 lookFor.target = (oop) x; | |
584 LookForRefInObjectClosure look_in_object((oop) x); | |
585 | |
586 tty->print_cr("Searching heap:"); | |
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587 ch->object_iterate(&look_in_object); |
0 | 588 |
589 tty->print_cr("Searching strong roots:"); | |
590 Universe::oops_do(&lookFor, false); | |
591 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles | |
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592 Threads::oops_do(&lookFor, NULL); |
0 | 593 ObjectSynchronizer::oops_do(&lookFor); |
594 //FlatProfiler::oops_do(&lookFor); | |
595 SystemDictionary::oops_do(&lookFor); | |
596 | |
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597 tty->print_cr("Searching code cache:"); |
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598 CodeCache::oops_do(&lookFor); |
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599 |
0 | 600 tty->print_cr("Done."); |
601 } | |
602 | |
603 class FindClassObjectClosure: public ObjectClosure { | |
604 private: | |
605 const char* _target; | |
606 public: | |
607 FindClassObjectClosure(const char name[]) { _target = name; } | |
608 | |
609 virtual void do_object(oop obj) { | |
610 if (obj->is_klass()) { | |
611 Klass* k = klassOop(obj)->klass_part(); | |
612 if (k->name() != NULL) { | |
613 ResourceMark rm; | |
614 const char* ext = k->external_name(); | |
615 if ( strcmp(_target, ext) == 0 ) { | |
616 tty->print_cr("Found " INTPTR_FORMAT, obj); | |
617 obj->print(); | |
618 } | |
619 } | |
620 } | |
621 } | |
622 }; | |
623 | |
624 // | |
625 extern "C" void findclass(const char name[]) { | |
626 Command c("findclass"); | |
627 if (name != NULL) { | |
628 tty->print_cr("Finding class %s -> ", name); | |
629 FindClassObjectClosure srch(name); | |
630 Universe::heap()->permanent_object_iterate(&srch); | |
631 } | |
632 } | |
633 | |
634 // Another interface that isn't ambiguous in dbx. | |
635 // Can we someday rename the other find to hsfind? | |
636 extern "C" void hsfind(intptr_t x) { | |
637 Command c("hsfind"); | |
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638 os::print_location(tty, x, false); |
0 | 639 } |
640 | |
641 | |
642 extern "C" void hsfindref(intptr_t x) { | |
643 Command c("hsfindref"); | |
644 findref(x); | |
645 } | |
646 | |
647 extern "C" void find(intptr_t x) { | |
648 Command c("find"); | |
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649 os::print_location(tty, x, false); |
0 | 650 } |
651 | |
652 | |
653 extern "C" void findpc(intptr_t x) { | |
654 Command c("findpc"); | |
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655 os::print_location(tty, x, true); |
0 | 656 } |
657 | |
658 | |
659 // int versions of all methods to avoid having to type type casts in the debugger | |
660 | |
661 void pp(intptr_t p) { pp((void*)p); } | |
662 void pp(oop p) { pp((void*)p); } | |
663 | |
664 void help() { | |
665 Command c("help"); | |
666 tty->print_cr("basic"); | |
667 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
668 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
669 tty->print_cr(" ps() - print current thread stack"); | |
670 tty->print_cr(" pss() - print all thread stacks"); | |
671 tty->print_cr(" pm(int pc) - print methodOop given compiled PC"); | |
672 tty->print_cr(" findm(intptr_t pc) - finds methodOop"); | |
673 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); | |
674 | |
675 tty->print_cr("misc."); | |
676 tty->print_cr(" flush() - flushes the log file"); | |
677 tty->print_cr(" events() - dump last 50 events"); | |
678 | |
679 | |
680 tty->print_cr("compiler debugging"); | |
681 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
682 tty->print_cr(" ndebug() - undo debug"); | |
683 } | |
684 | |
685 #if 0 | |
686 | |
687 // BobV's command parser for debugging on windows when nothing else works. | |
688 | |
689 enum CommandID { | |
690 CMDID_HELP, | |
691 CMDID_QUIT, | |
692 CMDID_HSFIND, | |
693 CMDID_PSS, | |
694 CMDID_PS, | |
695 CMDID_PSF, | |
696 CMDID_FINDM, | |
697 CMDID_FINDNM, | |
698 CMDID_PP, | |
699 CMDID_BPT, | |
700 CMDID_EXIT, | |
701 CMDID_VERIFY, | |
702 CMDID_THREADS, | |
703 CMDID_ILLEGAL = 99 | |
704 }; | |
705 | |
706 struct CommandParser { | |
707 char *name; | |
708 CommandID code; | |
709 char *description; | |
710 }; | |
711 | |
712 struct CommandParser CommandList[] = { | |
713 (char *)"help", CMDID_HELP, " Dump this list", | |
714 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
715 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
716 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
717 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
718 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
719 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC", | |
720 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", | |
721 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
722 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
723 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
724 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
725 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
726 (char *)0, CMDID_ILLEGAL | |
727 }; | |
728 | |
729 | |
730 // get_debug_command() | |
731 // | |
732 // Read a command from standard input. | |
733 // This is useful when you have a debugger | |
734 // which doesn't support calling into functions. | |
735 // | |
736 void get_debug_command() | |
737 { | |
738 ssize_t count; | |
739 int i,j; | |
740 bool gotcommand; | |
741 intptr_t addr; | |
742 char buffer[256]; | |
743 nmethod *nm; | |
744 methodOop m; | |
745 | |
746 tty->print_cr("You have entered the diagnostic command interpreter"); | |
747 tty->print("The supported commands are:\n"); | |
748 for ( i=0; ; i++ ) { | |
749 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
750 break; | |
751 tty->print_cr(" %s \n", CommandList[i].name ); | |
752 } | |
753 | |
754 while ( 1 ) { | |
755 gotcommand = false; | |
756 tty->print("Please enter a command: "); | |
757 count = scanf("%s", buffer) ; | |
758 if ( count >=0 ) { | |
759 for ( i=0; ; i++ ) { | |
760 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
761 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
762 break; | |
763 } | |
764 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
765 gotcommand = true; | |
766 switch ( CommandList[i].code ) { | |
767 case CMDID_PS: | |
768 ps(); | |
769 break; | |
770 case CMDID_PSS: | |
771 pss(); | |
772 break; | |
773 case CMDID_PSF: | |
774 psf(); | |
775 break; | |
776 case CMDID_FINDM: | |
777 tty->print("Please enter the hex addr to pass to findm: "); | |
778 scanf("%I64X", &addr); | |
779 m = (methodOop)findm(addr); | |
780 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); | |
781 break; | |
782 case CMDID_FINDNM: | |
783 tty->print("Please enter the hex addr to pass to findnm: "); | |
784 scanf("%I64X", &addr); | |
785 nm = (nmethod*)findnm(addr); | |
786 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
787 break; | |
788 case CMDID_PP: | |
789 tty->print("Please enter the hex addr to pass to pp: "); | |
790 scanf("%I64X", &addr); | |
791 pp((void*)addr); | |
792 break; | |
793 case CMDID_EXIT: | |
794 exit(0); | |
795 case CMDID_HELP: | |
796 tty->print("Here are the supported commands: "); | |
797 for ( j=0; ; j++ ) { | |
798 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
799 break; | |
800 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
801 CommandList[j].description ); | |
802 } | |
803 break; | |
804 case CMDID_QUIT: | |
805 return; | |
806 break; | |
807 case CMDID_BPT: | |
808 BREAKPOINT; | |
809 break; | |
810 case CMDID_VERIFY: | |
811 verify();; | |
812 break; | |
813 case CMDID_THREADS: | |
814 threads();; | |
815 break; | |
816 case CMDID_HSFIND: | |
817 tty->print("Please enter the hex addr to pass to hsfind: "); | |
818 scanf("%I64X", &addr); | |
819 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
820 hsfind(addr); | |
821 break; | |
822 default: | |
823 case CMDID_ILLEGAL: | |
824 break; | |
825 } | |
826 } | |
827 } | |
828 } | |
829 } | |
830 } | |
831 #endif | |
832 | |
833 #endif // PRODUCT |