Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 2645:b2c1e959be46
Clean up around BlockBegin / StdEntry.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 11 May 2011 14:34:29 +0200 |
parents | 1d1603768966 |
children | 2e038ad0c1d0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "code/codeCache.hpp" | |
28 #include "code/icBuffer.hpp" | |
29 #include "code/nmethod.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/compileBroker.hpp" | |
32 #include "compiler/disassembler.hpp" | |
33 #include "gc_implementation/shared/markSweep.hpp" | |
34 #include "gc_interface/collectedHeap.hpp" | |
35 #include "interpreter/bytecodeHistogram.hpp" | |
36 #include "interpreter/interpreter.hpp" | |
37 #include "memory/resourceArea.hpp" | |
38 #include "memory/universe.hpp" | |
39 #include "oops/oop.inline.hpp" | |
40 #include "prims/privilegedStack.hpp" | |
41 #include "runtime/arguments.hpp" | |
42 #include "runtime/frame.hpp" | |
43 #include "runtime/java.hpp" | |
44 #include "runtime/sharedRuntime.hpp" | |
45 #include "runtime/stubCodeGenerator.hpp" | |
46 #include "runtime/stubRoutines.hpp" | |
47 #include "runtime/vframe.hpp" | |
48 #include "services/heapDumper.hpp" | |
49 #include "utilities/defaultStream.hpp" | |
50 #include "utilities/events.hpp" | |
51 #include "utilities/top.hpp" | |
52 #include "utilities/vmError.hpp" | |
53 #ifdef TARGET_OS_FAMILY_linux | |
54 # include "os_linux.inline.hpp" | |
55 # include "thread_linux.inline.hpp" | |
56 #endif | |
57 #ifdef TARGET_OS_FAMILY_solaris | |
58 # include "os_solaris.inline.hpp" | |
59 # include "thread_solaris.inline.hpp" | |
60 #endif | |
61 #ifdef TARGET_OS_FAMILY_windows | |
62 # include "os_windows.inline.hpp" | |
63 # include "thread_windows.inline.hpp" | |
64 #endif | |
0 | 65 |
66 #ifndef ASSERT | |
67 # ifdef _DEBUG | |
68 // NOTE: don't turn the lines below into a comment -- if you're getting | |
69 // a compile error here, change the settings to define ASSERT | |
70 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
71 functions that do not slow down the system too much and thus can be left in optimized code. | |
72 On the other hand, the code should not be included in a production version. | |
73 # endif // _DEBUG | |
74 #endif // ASSERT | |
75 | |
76 | |
77 #ifdef _DEBUG | |
78 # ifndef ASSERT | |
79 configuration error: ASSERT must be defined in debug version | |
80 # endif // ASSERT | |
81 #endif // _DEBUG | |
82 | |
83 | |
84 #ifdef PRODUCT | |
85 # if -defined _DEBUG || -defined ASSERT | |
86 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
87 # endif | |
88 #endif // PRODUCT | |
89 | |
90 | |
91 void warning(const char* format, ...) { | |
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92 if (PrintWarnings) { |
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93 // In case error happens before init or during shutdown |
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94 if (tty == NULL) ostream_init(); |
0 | 95 |
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96 tty->print("%s warning: ", VM_Version::vm_name()); |
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97 va_list ap; |
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98 va_start(ap, format); |
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99 tty->vprint_cr(format, ap); |
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100 va_end(ap); |
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101 } |
0 | 102 if (BreakAtWarning) BREAKPOINT; |
103 } | |
104 | |
105 #ifndef PRODUCT | |
106 | |
107 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
108 | |
109 static const char* last_file_name = NULL; | |
110 static int last_line_no = -1; | |
111 | |
112 // assert/guarantee/... may happen very early during VM initialization. | |
113 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
114 // example, don't use tty. | |
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115 bool error_is_suppressed(const char* file_name, int line_no) { |
0 | 116 // The following 1-element cache requires that passed-in |
117 // file names are always only constant literals. | |
118 if (file_name == last_file_name && line_no == last_line_no) return true; | |
119 | |
120 int file_name_len = (int)strlen(file_name); | |
121 char separator = os::file_separator()[0]; | |
122 const char* base_name = strrchr(file_name, separator); | |
123 if (base_name == NULL) | |
124 base_name = file_name; | |
125 | |
126 // scan the SuppressErrorAt option | |
127 const char* cp = SuppressErrorAt; | |
128 for (;;) { | |
129 const char* sfile; | |
130 int sfile_len; | |
131 int sline; | |
132 bool noisy; | |
133 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
134 if ((*cp) == '\0') break; | |
135 sfile = cp; | |
136 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
137 sfile_len = cp - sfile; | |
138 if ((*cp) == ':') cp++; | |
139 sline = 0; | |
140 while ((*cp) != '\0' && isdigit(*cp)) { | |
141 sline *= 10; | |
142 sline += (*cp) - '0'; | |
143 cp++; | |
144 } | |
145 // "file:line!" means the assert suppression is not silent | |
146 noisy = ((*cp) == '!'); | |
147 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
148 // match the line | |
149 if (sline != 0) { | |
150 if (sline != line_no) continue; | |
151 } | |
152 // match the file | |
153 if (sfile_len > 0) { | |
154 const char* look = file_name; | |
155 const char* look_max = file_name + file_name_len - sfile_len; | |
156 const char* foundp; | |
157 bool match = false; | |
158 while (!match | |
159 && (foundp = strchr(look, sfile[0])) != NULL | |
160 && foundp <= look_max) { | |
161 match = true; | |
162 for (int i = 1; i < sfile_len; i++) { | |
163 if (sfile[i] != foundp[i]) { | |
164 match = false; | |
165 break; | |
166 } | |
167 } | |
168 look = foundp + 1; | |
169 } | |
170 if (!match) continue; | |
171 } | |
172 // got a match! | |
173 if (noisy) { | |
174 fdStream out(defaultStream::output_fd()); | |
175 out.print_raw("[error suppressed at "); | |
176 out.print_raw(base_name); | |
177 char buf[16]; | |
178 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
179 out.print_raw_cr(buf); | |
180 } else { | |
181 // update 1-element cache for fast silent matches | |
182 last_file_name = file_name; | |
183 last_line_no = line_no; | |
184 } | |
185 return true; | |
186 } | |
187 | |
188 if (!is_error_reported()) { | |
189 // print a friendly hint: | |
190 fdStream out(defaultStream::output_fd()); | |
191 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
192 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
193 out.print_raw (base_name); | |
194 char buf[16]; | |
195 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
196 out.print_raw_cr(buf); | |
197 } | |
198 return false; | |
199 } | |
200 | |
201 #undef is_token_break | |
202 | |
203 #else | |
204 | |
205 // Place-holder for non-existent suppression check: | |
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206 #define error_is_suppressed(file_name, line_no) (false) |
0 | 207 |
208 #endif //PRODUCT | |
209 | |
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210 void report_vm_error(const char* file, int line, const char* error_msg, |
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211 const char* detail_msg) |
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212 { |
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213 if (Debugging || error_is_suppressed(file, line)) return; |
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214 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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215 VMError err(thread, file, line, error_msg, detail_msg); |
0 | 216 err.report_and_die(); |
217 } | |
218 | |
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219 void report_fatal(const char* file, int line, const char* message) |
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220 { |
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221 report_vm_error(file, line, "fatal error", message); |
0 | 222 } |
223 | |
224 // Used by report_vm_out_of_memory to detect recursion. | |
225 static jint _exiting_out_of_mem = 0; | |
226 | |
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227 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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228 const char* message) { |
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229 if (Debugging) return; |
0 | 230 |
231 // We try to gather additional information for the first out of memory | |
232 // error only; gathering additional data might cause an allocation and a | |
233 // recursive out_of_memory condition. | |
234 | |
235 const jint exiting = 1; | |
236 // If we succeed in changing the value, we're the first one in. | |
237 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
238 | |
239 if (first_time_here) { | |
240 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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241 VMError(thread, file, line, size, message).report_and_die(); |
0 | 242 } |
227
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243 |
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244 // Dump core and abort |
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245 vm_abort(true); |
0 | 246 } |
247 | |
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248 void report_should_not_call(const char* file, int line) { |
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249 report_vm_error(file, line, "ShouldNotCall()"); |
0 | 250 } |
251 | |
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252 void report_should_not_reach_here(const char* file, int line) { |
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253 report_vm_error(file, line, "ShouldNotReachHere()"); |
0 | 254 } |
255 | |
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256 void report_unimplemented(const char* file, int line) { |
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257 report_vm_error(file, line, "Unimplemented()"); |
0 | 258 } |
259 | |
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260 void report_untested(const char* file, int line, const char* message) { |
0 | 261 #ifndef PRODUCT |
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262 warning("Untested: %s in %s: %d\n", message, file, line); |
0 | 263 #endif // PRODUCT |
264 } | |
265 | |
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266 void report_out_of_shared_space(SharedSpaceType shared_space) { |
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267 static const char* name[] = { |
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268 "permanent generation", |
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269 "shared read only space", |
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270 "shared read write space", |
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271 "shared miscellaneous data space" |
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272 }; |
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273 static const char* flag[] = { |
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274 "PermGen", |
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275 "SharedReadOnlySize", |
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276 "SharedReadWriteSize", |
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277 "SharedMiscDataSize" |
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278 }; |
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279 |
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280 warning("\nThe %s is not large enough\n" |
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281 "to preload requested classes. Use -XX:%s=\n" |
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282 "to increase the initial size of %s.\n", |
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283 name[shared_space], flag[shared_space], name[shared_space]); |
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284 exit(2); |
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285 } |
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286 |
0 | 287 void report_java_out_of_memory(const char* message) { |
288 static jint out_of_memory_reported = 0; | |
289 | |
290 // A number of threads may attempt to report OutOfMemoryError at around the | |
291 // same time. To avoid dumping the heap or executing the data collection | |
292 // commands multiple times we just do it once when the first threads reports | |
293 // the error. | |
294 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
295 // create heap dump before OnOutOfMemoryError commands are executed | |
296 if (HeapDumpOnOutOfMemoryError) { | |
297 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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298 HeapDumper::dump_heap_from_oome(); |
0 | 299 } |
300 | |
301 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
302 VMError err(message); | |
303 err.report_java_out_of_memory(); | |
304 } | |
305 } | |
306 } | |
307 | |
308 | |
309 extern "C" void ps(); | |
310 | |
311 static bool error_reported = false; | |
312 | |
313 // call this when the VM is dying--it might loosen some asserts | |
314 void set_error_reported() { | |
315 error_reported = true; | |
316 } | |
317 | |
318 bool is_error_reported() { | |
319 return error_reported; | |
320 } | |
321 | |
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322 #ifndef PRODUCT |
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323 #include <signal.h> |
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324 |
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325 void test_error_handler(size_t test_num) |
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326 { |
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327 if (test_num == 0) return; |
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328 |
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329 // If asserts are disabled, use the corresponding guarantee instead. |
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330 size_t n = test_num; |
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331 NOT_DEBUG(if (n <= 2) n += 2); |
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332 |
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333 const char* const str = "hello"; |
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334 const size_t num = (size_t)os::vm_page_size(); |
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335 |
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336 const char* const eol = os::line_separator(); |
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337 const char* const msg = "this message should be truncated during formatting"; |
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338 |
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339 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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340 switch (n) { |
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341 case 1: assert(str == NULL, "expected null"); |
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342 case 2: assert(num == 1023 && *str == 'X', |
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343 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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344 case 3: guarantee(str == NULL, "expected null"); |
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345 case 4: guarantee(num == 1023 && *str == 'X', |
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346 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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347 case 5: fatal("expected null"); |
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348 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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349 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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350 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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351 "%s%s# %s%s# %s%s# %s%s# %s", |
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352 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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353 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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354 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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355 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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356 case 9: ShouldNotCallThis(); |
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357 case 10: ShouldNotReachHere(); |
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358 case 11: Unimplemented(); |
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359 // This is last because it does not generate an hs_err* file on Windows. |
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360 case 12: os::signal_raise(SIGSEGV); |
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361 |
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362 default: ShouldNotReachHere(); |
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363 } |
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364 } |
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365 #endif // #ifndef PRODUCT |
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366 |
0 | 367 // ------ helper functions for debugging go here ------------ |
368 | |
369 #ifndef PRODUCT | |
370 // All debug entries should be wrapped with a stack allocated | |
371 // Command object. It makes sure a resource mark is set and | |
372 // flushes the logfile to prevent file sharing problems. | |
373 | |
374 class Command : public StackObj { | |
375 private: | |
376 ResourceMark rm; | |
377 ResetNoHandleMark rnhm; | |
378 HandleMark hm; | |
379 bool debug_save; | |
380 public: | |
381 static int level; | |
382 Command(const char* str) { | |
383 debug_save = Debugging; | |
384 Debugging = true; | |
385 if (level++ > 0) return; | |
386 tty->cr(); | |
387 tty->print_cr("\"Executing %s\"", str); | |
388 } | |
389 | |
390 ~Command() { tty->flush(); Debugging = debug_save; level--; } | |
391 }; | |
392 | |
393 int Command::level = 0; | |
394 | |
395 extern "C" void blob(CodeBlob* cb) { | |
396 Command c("blob"); | |
397 cb->print(); | |
398 } | |
399 | |
400 | |
401 extern "C" void dump_vtable(address p) { | |
402 Command c("dump_vtable"); | |
403 klassOop k = (klassOop)p; | |
404 instanceKlass::cast(k)->vtable()->print(); | |
405 } | |
406 | |
407 | |
408 extern "C" void nm(intptr_t p) { | |
409 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
410 Command c("nm"); | |
411 CodeBlob* cb = CodeCache::find_blob((address)p); | |
412 if (cb == NULL) { | |
413 tty->print_cr("NULL"); | |
414 } else { | |
415 cb->print(); | |
416 } | |
417 } | |
418 | |
419 | |
420 extern "C" void disnm(intptr_t p) { | |
421 Command c("disnm"); | |
422 CodeBlob* cb = CodeCache::find_blob((address) p); | |
2008 | 423 nmethod* nm = cb->as_nmethod_or_null(); |
424 if (nm) { | |
425 nm->print(); | |
426 Disassembler::decode(nm); | |
427 } else { | |
428 cb->print(); | |
429 Disassembler::decode(cb); | |
430 } | |
0 | 431 } |
432 | |
433 | |
434 extern "C" void printnm(intptr_t p) { | |
435 char buffer[256]; | |
436 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
437 Command c(buffer); | |
438 CodeBlob* cb = CodeCache::find_blob((address) p); | |
439 if (cb->is_nmethod()) { | |
440 nmethod* nm = (nmethod*)cb; | |
441 nm->print_nmethod(true); | |
442 } | |
443 } | |
444 | |
445 | |
446 extern "C" void universe() { | |
447 Command c("universe"); | |
448 Universe::print(); | |
449 } | |
450 | |
451 | |
452 extern "C" void verify() { | |
453 // try to run a verify on the entire system | |
454 // note: this may not be safe if we're not at a safepoint; for debugging, | |
455 // this manipulates the safepoint settings to avoid assertion failures | |
456 Command c("universe verify"); | |
457 bool safe = SafepointSynchronize::is_at_safepoint(); | |
458 if (!safe) { | |
459 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
460 SafepointSynchronize::set_is_at_safepoint(); | |
461 } | |
462 // Ensure Eden top is correct before verification | |
463 Universe::heap()->prepare_for_verify(); | |
464 Universe::verify(true); | |
465 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
466 } | |
467 | |
468 | |
469 extern "C" void pp(void* p) { | |
470 Command c("pp"); | |
471 FlagSetting fl(PrintVMMessages, true); | |
472 if (Universe::heap()->is_in(p)) { | |
473 oop obj = oop(p); | |
474 obj->print(); | |
475 } else { | |
476 tty->print("%#p", p); | |
477 } | |
478 } | |
479 | |
480 | |
481 // pv: print vm-printable object | |
482 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
483 extern "C" void findpc(intptr_t x); | |
484 | |
485 extern "C" void ps() { // print stack | |
486 Command c("ps"); | |
487 | |
488 | |
489 // Prints the stack of the current Java thread | |
490 JavaThread* p = JavaThread::active(); | |
491 tty->print(" for thread: "); | |
492 p->print(); | |
493 tty->cr(); | |
494 | |
495 if (p->has_last_Java_frame()) { | |
496 // If the last_Java_fp is set we are in C land and | |
497 // can call the standard stack_trace function. | |
498 p->trace_stack(); | |
499 } else { | |
500 frame f = os::current_frame(); | |
501 RegisterMap reg_map(p); | |
502 f = f.sender(®_map); | |
503 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
504 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
505 pd_ps(f); | |
506 } | |
507 | |
508 } | |
509 | |
510 | |
511 extern "C" void psf() { // print stack frames | |
512 { | |
513 Command c("psf"); | |
514 JavaThread* p = JavaThread::active(); | |
515 tty->print(" for thread: "); | |
516 p->print(); | |
517 tty->cr(); | |
518 if (p->has_last_Java_frame()) { | |
519 p->trace_frames(); | |
520 } | |
521 } | |
522 } | |
523 | |
524 | |
525 extern "C" void threads() { | |
526 Command c("threads"); | |
527 Threads::print(false, true); | |
528 } | |
529 | |
530 | |
531 extern "C" void psd() { | |
532 Command c("psd"); | |
533 SystemDictionary::print(); | |
534 } | |
535 | |
536 | |
537 extern "C" void safepoints() { | |
538 Command c("safepoints"); | |
539 SafepointSynchronize::print_state(); | |
540 } | |
541 | |
542 | |
543 extern "C" void pss() { // print all stacks | |
544 Command c("pss"); | |
545 Threads::print(true, true); | |
546 } | |
547 | |
548 | |
549 extern "C" void debug() { // to set things up for compiler debugging | |
550 Command c("debug"); | |
551 WizardMode = true; | |
552 PrintVMMessages = PrintCompilation = true; | |
553 PrintInlining = PrintAssembly = true; | |
554 tty->flush(); | |
555 } | |
556 | |
557 | |
558 extern "C" void ndebug() { // undo debug() | |
559 Command c("ndebug"); | |
560 PrintCompilation = false; | |
561 PrintInlining = PrintAssembly = false; | |
562 tty->flush(); | |
563 } | |
564 | |
565 | |
566 extern "C" void flush() { | |
567 Command c("flush"); | |
568 tty->flush(); | |
569 } | |
570 | |
571 | |
572 extern "C" void events() { | |
573 Command c("events"); | |
574 Events::print_last(tty, 50); | |
575 } | |
576 | |
577 | |
578 extern "C" void nevents(int n) { | |
579 Command c("events"); | |
580 Events::print_last(tty, n); | |
581 } | |
582 | |
583 | |
584 // Given a heap address that was valid before the most recent GC, if | |
585 // the oop that used to contain it is still live, prints the new | |
586 // location of the oop and the address. Useful for tracking down | |
587 // certain kinds of naked oop and oop map bugs. | |
588 extern "C" void pnl(intptr_t old_heap_addr) { | |
589 // Print New Location of old heap address | |
590 Command c("pnl"); | |
591 #ifndef VALIDATE_MARK_SWEEP | |
592 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
593 #else | |
594 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
595 #endif | |
596 } | |
597 | |
598 | |
599 extern "C" methodOop findm(intptr_t pc) { | |
600 Command c("findm"); | |
601 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
602 return (nm == NULL) ? (methodOop)NULL : nm->method(); | |
603 } | |
604 | |
605 | |
606 extern "C" nmethod* findnm(intptr_t addr) { | |
607 Command c("findnm"); | |
608 return CodeCache::find_nmethod((address)addr); | |
609 } | |
610 | |
611 static address same_page(address x, address y) { | |
612 intptr_t page_bits = -os::vm_page_size(); | |
613 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
614 return x; | |
615 } else if (x > y) { | |
616 return (address)(intptr_t(y) | ~page_bits) + 1; | |
617 } else { | |
618 return (address)(intptr_t(y) & page_bits); | |
619 } | |
620 } | |
621 | |
622 class LookForRefInGenClosure : public OopsInGenClosure { | |
623 public: | |
624 oop target; | |
625 void do_oop(oop* o) { | |
626 if (o != NULL && *o == target) { | |
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627 tty->print_cr(INTPTR_FORMAT, o); |
0 | 628 } |
629 } | |
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630 void do_oop(narrowOop* o) { ShouldNotReachHere(); } |
0 | 631 }; |
632 | |
633 | |
634 class LookForRefInObjectClosure : public ObjectClosure { | |
635 private: | |
636 LookForRefInGenClosure look_in_object; | |
637 public: | |
638 LookForRefInObjectClosure(oop target) { look_in_object.target = target; } | |
639 void do_object(oop obj) { | |
640 obj->oop_iterate(&look_in_object); | |
641 } | |
642 }; | |
643 | |
644 | |
645 static void findref(intptr_t x) { | |
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646 CollectedHeap *ch = Universe::heap(); |
0 | 647 LookForRefInGenClosure lookFor; |
648 lookFor.target = (oop) x; | |
649 LookForRefInObjectClosure look_in_object((oop) x); | |
650 | |
651 tty->print_cr("Searching heap:"); | |
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652 ch->object_iterate(&look_in_object); |
0 | 653 |
654 tty->print_cr("Searching strong roots:"); | |
655 Universe::oops_do(&lookFor, false); | |
656 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles | |
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657 Threads::oops_do(&lookFor, NULL); |
0 | 658 ObjectSynchronizer::oops_do(&lookFor); |
659 //FlatProfiler::oops_do(&lookFor); | |
660 SystemDictionary::oops_do(&lookFor); | |
661 | |
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662 tty->print_cr("Searching code cache:"); |
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663 CodeCache::oops_do(&lookFor); |
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664 |
0 | 665 tty->print_cr("Done."); |
666 } | |
667 | |
668 class FindClassObjectClosure: public ObjectClosure { | |
669 private: | |
670 const char* _target; | |
671 public: | |
672 FindClassObjectClosure(const char name[]) { _target = name; } | |
673 | |
674 virtual void do_object(oop obj) { | |
675 if (obj->is_klass()) { | |
676 Klass* k = klassOop(obj)->klass_part(); | |
677 if (k->name() != NULL) { | |
678 ResourceMark rm; | |
679 const char* ext = k->external_name(); | |
680 if ( strcmp(_target, ext) == 0 ) { | |
681 tty->print_cr("Found " INTPTR_FORMAT, obj); | |
682 obj->print(); | |
683 } | |
684 } | |
685 } | |
686 } | |
687 }; | |
688 | |
689 // | |
690 extern "C" void findclass(const char name[]) { | |
691 Command c("findclass"); | |
692 if (name != NULL) { | |
693 tty->print_cr("Finding class %s -> ", name); | |
694 FindClassObjectClosure srch(name); | |
695 Universe::heap()->permanent_object_iterate(&srch); | |
696 } | |
697 } | |
698 | |
699 // Another interface that isn't ambiguous in dbx. | |
700 // Can we someday rename the other find to hsfind? | |
701 extern "C" void hsfind(intptr_t x) { | |
702 Command c("hsfind"); | |
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703 os::print_location(tty, x, false); |
0 | 704 } |
705 | |
706 | |
707 extern "C" void hsfindref(intptr_t x) { | |
708 Command c("hsfindref"); | |
709 findref(x); | |
710 } | |
711 | |
712 extern "C" void find(intptr_t x) { | |
713 Command c("find"); | |
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714 os::print_location(tty, x, false); |
0 | 715 } |
716 | |
717 | |
718 extern "C" void findpc(intptr_t x) { | |
719 Command c("findpc"); | |
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720 os::print_location(tty, x, true); |
0 | 721 } |
722 | |
723 | |
724 // int versions of all methods to avoid having to type type casts in the debugger | |
725 | |
726 void pp(intptr_t p) { pp((void*)p); } | |
727 void pp(oop p) { pp((void*)p); } | |
728 | |
729 void help() { | |
730 Command c("help"); | |
731 tty->print_cr("basic"); | |
732 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
733 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
734 tty->print_cr(" ps() - print current thread stack"); | |
735 tty->print_cr(" pss() - print all thread stacks"); | |
736 tty->print_cr(" pm(int pc) - print methodOop given compiled PC"); | |
737 tty->print_cr(" findm(intptr_t pc) - finds methodOop"); | |
738 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); | |
739 | |
740 tty->print_cr("misc."); | |
741 tty->print_cr(" flush() - flushes the log file"); | |
742 tty->print_cr(" events() - dump last 50 events"); | |
743 | |
744 | |
745 tty->print_cr("compiler debugging"); | |
746 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
747 tty->print_cr(" ndebug() - undo debug"); | |
748 } | |
749 | |
750 #if 0 | |
751 | |
752 // BobV's command parser for debugging on windows when nothing else works. | |
753 | |
754 enum CommandID { | |
755 CMDID_HELP, | |
756 CMDID_QUIT, | |
757 CMDID_HSFIND, | |
758 CMDID_PSS, | |
759 CMDID_PS, | |
760 CMDID_PSF, | |
761 CMDID_FINDM, | |
762 CMDID_FINDNM, | |
763 CMDID_PP, | |
764 CMDID_BPT, | |
765 CMDID_EXIT, | |
766 CMDID_VERIFY, | |
767 CMDID_THREADS, | |
768 CMDID_ILLEGAL = 99 | |
769 }; | |
770 | |
771 struct CommandParser { | |
772 char *name; | |
773 CommandID code; | |
774 char *description; | |
775 }; | |
776 | |
777 struct CommandParser CommandList[] = { | |
778 (char *)"help", CMDID_HELP, " Dump this list", | |
779 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
780 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
781 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
782 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
783 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
784 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC", | |
785 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", | |
786 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
787 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
788 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
789 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
790 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
791 (char *)0, CMDID_ILLEGAL | |
792 }; | |
793 | |
794 | |
795 // get_debug_command() | |
796 // | |
797 // Read a command from standard input. | |
798 // This is useful when you have a debugger | |
799 // which doesn't support calling into functions. | |
800 // | |
801 void get_debug_command() | |
802 { | |
803 ssize_t count; | |
804 int i,j; | |
805 bool gotcommand; | |
806 intptr_t addr; | |
807 char buffer[256]; | |
808 nmethod *nm; | |
809 methodOop m; | |
810 | |
811 tty->print_cr("You have entered the diagnostic command interpreter"); | |
812 tty->print("The supported commands are:\n"); | |
813 for ( i=0; ; i++ ) { | |
814 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
815 break; | |
816 tty->print_cr(" %s \n", CommandList[i].name ); | |
817 } | |
818 | |
819 while ( 1 ) { | |
820 gotcommand = false; | |
821 tty->print("Please enter a command: "); | |
822 count = scanf("%s", buffer) ; | |
823 if ( count >=0 ) { | |
824 for ( i=0; ; i++ ) { | |
825 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
826 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
827 break; | |
828 } | |
829 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
830 gotcommand = true; | |
831 switch ( CommandList[i].code ) { | |
832 case CMDID_PS: | |
833 ps(); | |
834 break; | |
835 case CMDID_PSS: | |
836 pss(); | |
837 break; | |
838 case CMDID_PSF: | |
839 psf(); | |
840 break; | |
841 case CMDID_FINDM: | |
842 tty->print("Please enter the hex addr to pass to findm: "); | |
843 scanf("%I64X", &addr); | |
844 m = (methodOop)findm(addr); | |
845 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); | |
846 break; | |
847 case CMDID_FINDNM: | |
848 tty->print("Please enter the hex addr to pass to findnm: "); | |
849 scanf("%I64X", &addr); | |
850 nm = (nmethod*)findnm(addr); | |
851 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
852 break; | |
853 case CMDID_PP: | |
854 tty->print("Please enter the hex addr to pass to pp: "); | |
855 scanf("%I64X", &addr); | |
856 pp((void*)addr); | |
857 break; | |
858 case CMDID_EXIT: | |
859 exit(0); | |
860 case CMDID_HELP: | |
861 tty->print("Here are the supported commands: "); | |
862 for ( j=0; ; j++ ) { | |
863 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
864 break; | |
865 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
866 CommandList[j].description ); | |
867 } | |
868 break; | |
869 case CMDID_QUIT: | |
870 return; | |
871 break; | |
872 case CMDID_BPT: | |
873 BREAKPOINT; | |
874 break; | |
875 case CMDID_VERIFY: | |
876 verify();; | |
877 break; | |
878 case CMDID_THREADS: | |
879 threads();; | |
880 break; | |
881 case CMDID_HSFIND: | |
882 tty->print("Please enter the hex addr to pass to hsfind: "); | |
883 scanf("%I64X", &addr); | |
884 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
885 hsfind(addr); | |
886 break; | |
887 default: | |
888 case CMDID_ILLEGAL: | |
889 break; | |
890 } | |
891 } | |
892 } | |
893 } | |
894 } | |
895 } | |
896 #endif | |
897 | |
898 #endif // PRODUCT |