Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 9083:9befe2fce567
8011972: Field can be erroneously marked as contended when @Contended annotation isn't present
Reviewed-by: kvn, kmo, shade
author | vlivanov |
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date | Thu, 11 Apr 2013 09:08:15 -0700 |
parents | be4d5c6c1f79 |
children | b9a918201d47 cc32ccaaf47f |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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" | |
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47 #include "runtime/thread.inline.hpp" |
1972 | 48 #include "runtime/vframe.hpp" |
49 #include "services/heapDumper.hpp" | |
50 #include "utilities/defaultStream.hpp" | |
51 #include "utilities/events.hpp" | |
52 #include "utilities/top.hpp" | |
53 #include "utilities/vmError.hpp" | |
54 #ifdef TARGET_OS_FAMILY_linux | |
55 # include "os_linux.inline.hpp" | |
56 #endif | |
57 #ifdef TARGET_OS_FAMILY_solaris | |
58 # include "os_solaris.inline.hpp" | |
59 #endif | |
60 #ifdef TARGET_OS_FAMILY_windows | |
61 # include "os_windows.inline.hpp" | |
62 #endif | |
3960 | 63 #ifdef TARGET_OS_FAMILY_bsd |
64 # include "os_bsd.inline.hpp" | |
65 #endif | |
0 | 66 |
67 #ifndef ASSERT | |
68 # ifdef _DEBUG | |
69 // NOTE: don't turn the lines below into a comment -- if you're getting | |
70 // a compile error here, change the settings to define ASSERT | |
71 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
72 functions that do not slow down the system too much and thus can be left in optimized code. | |
73 On the other hand, the code should not be included in a production version. | |
74 # endif // _DEBUG | |
75 #endif // ASSERT | |
76 | |
77 | |
78 #ifdef _DEBUG | |
79 # ifndef ASSERT | |
80 configuration error: ASSERT must be defined in debug version | |
81 # endif // ASSERT | |
82 #endif // _DEBUG | |
83 | |
84 | |
85 #ifdef PRODUCT | |
86 # if -defined _DEBUG || -defined ASSERT | |
87 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
88 # endif | |
89 #endif // PRODUCT | |
90 | |
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91 FormatBufferResource::FormatBufferResource(const char * format, ...) |
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92 : FormatBufferBase((char*)resource_allocate_bytes(RES_BUFSZ)) { |
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93 va_list argp; |
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94 va_start(argp, format); |
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95 jio_vsnprintf(_buf, RES_BUFSZ, format, argp); |
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96 va_end(argp); |
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97 } |
0 | 98 |
99 void warning(const char* format, ...) { | |
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100 if (PrintWarnings) { |
6759 | 101 FILE* const err = defaultStream::error_stream(); |
102 jio_fprintf(err, "%s warning: ", VM_Version::vm_name()); | |
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103 va_list ap; |
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104 va_start(ap, format); |
6759 | 105 vfprintf(err, format, ap); |
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106 va_end(ap); |
6759 | 107 fputc('\n', err); |
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108 } |
0 | 109 if (BreakAtWarning) BREAKPOINT; |
110 } | |
111 | |
112 #ifndef PRODUCT | |
113 | |
114 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
115 | |
116 static const char* last_file_name = NULL; | |
117 static int last_line_no = -1; | |
118 | |
119 // assert/guarantee/... may happen very early during VM initialization. | |
120 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
121 // example, don't use tty. | |
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122 bool error_is_suppressed(const char* file_name, int line_no) { |
0 | 123 // The following 1-element cache requires that passed-in |
124 // file names are always only constant literals. | |
125 if (file_name == last_file_name && line_no == last_line_no) return true; | |
126 | |
127 int file_name_len = (int)strlen(file_name); | |
128 char separator = os::file_separator()[0]; | |
129 const char* base_name = strrchr(file_name, separator); | |
130 if (base_name == NULL) | |
131 base_name = file_name; | |
132 | |
133 // scan the SuppressErrorAt option | |
134 const char* cp = SuppressErrorAt; | |
135 for (;;) { | |
136 const char* sfile; | |
137 int sfile_len; | |
138 int sline; | |
139 bool noisy; | |
140 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
141 if ((*cp) == '\0') break; | |
142 sfile = cp; | |
143 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
144 sfile_len = cp - sfile; | |
145 if ((*cp) == ':') cp++; | |
146 sline = 0; | |
147 while ((*cp) != '\0' && isdigit(*cp)) { | |
148 sline *= 10; | |
149 sline += (*cp) - '0'; | |
150 cp++; | |
151 } | |
152 // "file:line!" means the assert suppression is not silent | |
153 noisy = ((*cp) == '!'); | |
154 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
155 // match the line | |
156 if (sline != 0) { | |
157 if (sline != line_no) continue; | |
158 } | |
159 // match the file | |
160 if (sfile_len > 0) { | |
161 const char* look = file_name; | |
162 const char* look_max = file_name + file_name_len - sfile_len; | |
163 const char* foundp; | |
164 bool match = false; | |
165 while (!match | |
166 && (foundp = strchr(look, sfile[0])) != NULL | |
167 && foundp <= look_max) { | |
168 match = true; | |
169 for (int i = 1; i < sfile_len; i++) { | |
170 if (sfile[i] != foundp[i]) { | |
171 match = false; | |
172 break; | |
173 } | |
174 } | |
175 look = foundp + 1; | |
176 } | |
177 if (!match) continue; | |
178 } | |
179 // got a match! | |
180 if (noisy) { | |
181 fdStream out(defaultStream::output_fd()); | |
182 out.print_raw("[error suppressed at "); | |
183 out.print_raw(base_name); | |
184 char buf[16]; | |
185 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
186 out.print_raw_cr(buf); | |
187 } else { | |
188 // update 1-element cache for fast silent matches | |
189 last_file_name = file_name; | |
190 last_line_no = line_no; | |
191 } | |
192 return true; | |
193 } | |
194 | |
195 if (!is_error_reported()) { | |
196 // print a friendly hint: | |
197 fdStream out(defaultStream::output_fd()); | |
198 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
199 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
200 out.print_raw (base_name); | |
201 char buf[16]; | |
202 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
203 out.print_raw_cr(buf); | |
204 } | |
205 return false; | |
206 } | |
207 | |
208 #undef is_token_break | |
209 | |
210 #else | |
211 | |
212 // Place-holder for non-existent suppression check: | |
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213 #define error_is_suppressed(file_name, line_no) (false) |
0 | 214 |
4006 | 215 #endif // !PRODUCT |
0 | 216 |
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217 void report_vm_error(const char* file, int line, const char* error_msg, |
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218 const char* detail_msg) |
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219 { |
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220 if (Debugging || error_is_suppressed(file, line)) return; |
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221 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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222 VMError err(thread, file, line, error_msg, detail_msg); |
0 | 223 err.report_and_die(); |
224 } | |
225 | |
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226 void report_fatal(const char* file, int line, const char* message) |
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227 { |
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228 report_vm_error(file, line, "fatal error", message); |
0 | 229 } |
230 | |
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231 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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232 const char* message) { |
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233 if (Debugging) return; |
0 | 234 |
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235 Thread* thread = ThreadLocalStorage::get_thread_slow(); |
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236 VMError(thread, file, line, size, message).report_and_die(); |
0 | 237 |
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238 // The UseOSErrorReporting option in report_and_die() may allow a return |
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239 // to here. If so then we'll have to figure out how to handle it. |
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240 guarantee(false, "report_and_die() should not return here"); |
0 | 241 } |
242 | |
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243 void report_should_not_call(const char* file, int line) { |
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244 report_vm_error(file, line, "ShouldNotCall()"); |
0 | 245 } |
246 | |
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247 void report_should_not_reach_here(const char* file, int line) { |
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248 report_vm_error(file, line, "ShouldNotReachHere()"); |
0 | 249 } |
250 | |
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251 void report_unimplemented(const char* file, int line) { |
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252 report_vm_error(file, line, "Unimplemented()"); |
0 | 253 } |
254 | |
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255 void report_untested(const char* file, int line, const char* message) { |
0 | 256 #ifndef PRODUCT |
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257 warning("Untested: %s in %s: %d\n", message, file, line); |
4006 | 258 #endif // !PRODUCT |
0 | 259 } |
260 | |
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261 void report_out_of_shared_space(SharedSpaceType shared_space) { |
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262 static const char* name[] = { |
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263 "native memory for metadata", |
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264 "shared read only space", |
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265 "shared read write space", |
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266 "shared miscellaneous data space" |
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267 }; |
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268 static const char* flag[] = { |
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269 "Metaspace", |
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270 "SharedReadOnlySize", |
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271 "SharedReadWriteSize", |
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272 "SharedMiscDataSize" |
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273 }; |
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274 |
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275 warning("\nThe %s is not large enough\n" |
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276 "to preload requested classes. Use -XX:%s=\n" |
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277 "to increase the initial size of %s.\n", |
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278 name[shared_space], flag[shared_space], name[shared_space]); |
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279 exit(2); |
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280 } |
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281 |
0 | 282 void report_java_out_of_memory(const char* message) { |
283 static jint out_of_memory_reported = 0; | |
284 | |
285 // A number of threads may attempt to report OutOfMemoryError at around the | |
286 // same time. To avoid dumping the heap or executing the data collection | |
287 // commands multiple times we just do it once when the first threads reports | |
288 // the error. | |
289 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
290 // create heap dump before OnOutOfMemoryError commands are executed | |
291 if (HeapDumpOnOutOfMemoryError) { | |
292 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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293 HeapDumper::dump_heap_from_oome(); |
0 | 294 } |
295 | |
296 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
297 VMError err(message); | |
298 err.report_java_out_of_memory(); | |
299 } | |
300 } | |
301 } | |
302 | |
303 static bool error_reported = false; | |
304 | |
305 // call this when the VM is dying--it might loosen some asserts | |
306 void set_error_reported() { | |
307 error_reported = true; | |
308 } | |
309 | |
310 bool is_error_reported() { | |
311 return error_reported; | |
312 } | |
313 | |
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314 #ifndef PRODUCT |
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315 #include <signal.h> |
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316 |
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317 void test_error_handler(size_t test_num) |
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318 { |
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319 if (test_num == 0) return; |
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320 |
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321 // If asserts are disabled, use the corresponding guarantee instead. |
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322 size_t n = test_num; |
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323 NOT_DEBUG(if (n <= 2) n += 2); |
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324 |
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325 const char* const str = "hello"; |
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326 const size_t num = (size_t)os::vm_page_size(); |
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327 |
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328 const char* const eol = os::line_separator(); |
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329 const char* const msg = "this message should be truncated during formatting"; |
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330 |
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331 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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332 switch (n) { |
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333 case 1: assert(str == NULL, "expected null"); |
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334 case 2: assert(num == 1023 && *str == 'X', |
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335 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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336 case 3: guarantee(str == NULL, "expected null"); |
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337 case 4: guarantee(num == 1023 && *str == 'X', |
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338 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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339 case 5: fatal("expected null"); |
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340 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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341 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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342 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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343 "%s%s# %s%s# %s%s# %s%s# %s", |
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344 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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345 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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346 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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347 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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348 case 9: ShouldNotCallThis(); |
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349 case 10: ShouldNotReachHere(); |
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350 case 11: Unimplemented(); |
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351 // This is last because it does not generate an hs_err* file on Windows. |
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352 case 12: os::signal_raise(SIGSEGV); |
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353 |
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354 default: ShouldNotReachHere(); |
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355 } |
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356 } |
4006 | 357 #endif // !PRODUCT |
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358 |
0 | 359 // ------ helper functions for debugging go here ------------ |
360 | |
361 // All debug entries should be wrapped with a stack allocated | |
362 // Command object. It makes sure a resource mark is set and | |
363 // flushes the logfile to prevent file sharing problems. | |
364 | |
365 class Command : public StackObj { | |
366 private: | |
367 ResourceMark rm; | |
368 ResetNoHandleMark rnhm; | |
369 HandleMark hm; | |
370 bool debug_save; | |
371 public: | |
372 static int level; | |
373 Command(const char* str) { | |
374 debug_save = Debugging; | |
375 Debugging = true; | |
376 if (level++ > 0) return; | |
377 tty->cr(); | |
378 tty->print_cr("\"Executing %s\"", str); | |
379 } | |
380 | |
4006 | 381 ~Command() { |
382 tty->flush(); | |
383 Debugging = debug_save; | |
384 level--; | |
385 } | |
0 | 386 }; |
387 | |
388 int Command::level = 0; | |
389 | |
4006 | 390 #ifndef PRODUCT |
391 | |
0 | 392 extern "C" void blob(CodeBlob* cb) { |
393 Command c("blob"); | |
394 cb->print(); | |
395 } | |
396 | |
397 | |
398 extern "C" void dump_vtable(address p) { | |
399 Command c("dump_vtable"); | |
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400 Klass* k = (Klass*)p; |
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401 InstanceKlass::cast(k)->vtable()->print(); |
0 | 402 } |
403 | |
404 | |
405 extern "C" void nm(intptr_t p) { | |
406 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
407 Command c("nm"); | |
408 CodeBlob* cb = CodeCache::find_blob((address)p); | |
409 if (cb == NULL) { | |
410 tty->print_cr("NULL"); | |
411 } else { | |
412 cb->print(); | |
413 } | |
414 } | |
415 | |
416 | |
417 extern "C" void disnm(intptr_t p) { | |
418 Command c("disnm"); | |
419 CodeBlob* cb = CodeCache::find_blob((address) p); | |
2008 | 420 nmethod* nm = cb->as_nmethod_or_null(); |
421 if (nm) { | |
422 nm->print(); | |
423 Disassembler::decode(nm); | |
424 } else { | |
425 cb->print(); | |
426 Disassembler::decode(cb); | |
427 } | |
0 | 428 } |
429 | |
430 | |
431 extern "C" void printnm(intptr_t p) { | |
432 char buffer[256]; | |
433 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
434 Command c(buffer); | |
435 CodeBlob* cb = CodeCache::find_blob((address) p); | |
436 if (cb->is_nmethod()) { | |
437 nmethod* nm = (nmethod*)cb; | |
438 nm->print_nmethod(true); | |
439 } | |
440 } | |
441 | |
442 | |
443 extern "C" void universe() { | |
444 Command c("universe"); | |
445 Universe::print(); | |
446 } | |
447 | |
448 | |
449 extern "C" void verify() { | |
450 // try to run a verify on the entire system | |
451 // note: this may not be safe if we're not at a safepoint; for debugging, | |
452 // this manipulates the safepoint settings to avoid assertion failures | |
453 Command c("universe verify"); | |
454 bool safe = SafepointSynchronize::is_at_safepoint(); | |
455 if (!safe) { | |
456 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
457 SafepointSynchronize::set_is_at_safepoint(); | |
458 } | |
459 // Ensure Eden top is correct before verification | |
460 Universe::heap()->prepare_for_verify(); | |
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461 Universe::verify(); |
0 | 462 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); |
463 } | |
464 | |
465 | |
466 extern "C" void pp(void* p) { | |
467 Command c("pp"); | |
468 FlagSetting fl(PrintVMMessages, true); | |
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469 FlagSetting f2(DisplayVMOutput, true); |
0 | 470 if (Universe::heap()->is_in(p)) { |
471 oop obj = oop(p); | |
472 obj->print(); | |
473 } else { | |
4006 | 474 tty->print(PTR_FORMAT, p); |
0 | 475 } |
476 } | |
477 | |
478 | |
479 // pv: print vm-printable object | |
480 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
481 extern "C" void findpc(intptr_t x); | |
482 | |
4006 | 483 #endif // !PRODUCT |
484 | |
0 | 485 extern "C" void ps() { // print stack |
4006 | 486 if (Thread::current() == NULL) return; |
0 | 487 Command c("ps"); |
488 | |
489 | |
490 // Prints the stack of the current Java thread | |
491 JavaThread* p = JavaThread::active(); | |
492 tty->print(" for thread: "); | |
493 p->print(); | |
494 tty->cr(); | |
495 | |
496 if (p->has_last_Java_frame()) { | |
497 // If the last_Java_fp is set we are in C land and | |
498 // can call the standard stack_trace function. | |
4006 | 499 #ifdef PRODUCT |
500 p->print_stack(); | |
501 } else { | |
502 tty->print_cr("Cannot find the last Java frame, printing stack disabled."); | |
503 #else // !PRODUCT | |
0 | 504 p->trace_stack(); |
505 } else { | |
506 frame f = os::current_frame(); | |
507 RegisterMap reg_map(p); | |
508 f = f.sender(®_map); | |
509 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
510 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
511 pd_ps(f); | |
4006 | 512 #endif // PRODUCT |
0 | 513 } |
514 | |
515 } | |
516 | |
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517 extern "C" void pfl() { |
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518 // print frame layout |
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519 Command c("pfl"); |
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520 JavaThread* p = JavaThread::active(); |
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521 tty->print(" for thread: "); |
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522 p->print(); |
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523 tty->cr(); |
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524 if (p->has_last_Java_frame()) { |
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525 p->print_frame_layout(); |
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526 } |
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527 } |
0 | 528 |
4006 | 529 #ifndef PRODUCT |
530 | |
0 | 531 extern "C" void psf() { // print stack frames |
532 { | |
533 Command c("psf"); | |
534 JavaThread* p = JavaThread::active(); | |
535 tty->print(" for thread: "); | |
536 p->print(); | |
537 tty->cr(); | |
538 if (p->has_last_Java_frame()) { | |
539 p->trace_frames(); | |
540 } | |
541 } | |
542 } | |
543 | |
544 | |
545 extern "C" void threads() { | |
546 Command c("threads"); | |
547 Threads::print(false, true); | |
548 } | |
549 | |
550 | |
551 extern "C" void psd() { | |
552 Command c("psd"); | |
553 SystemDictionary::print(); | |
554 } | |
555 | |
556 | |
557 extern "C" void safepoints() { | |
558 Command c("safepoints"); | |
559 SafepointSynchronize::print_state(); | |
560 } | |
561 | |
4006 | 562 #endif // !PRODUCT |
0 | 563 |
564 extern "C" void pss() { // print all stacks | |
4006 | 565 if (Thread::current() == NULL) return; |
0 | 566 Command c("pss"); |
4006 | 567 Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
0 | 568 } |
569 | |
4006 | 570 #ifndef PRODUCT |
0 | 571 |
572 extern "C" void debug() { // to set things up for compiler debugging | |
573 Command c("debug"); | |
574 WizardMode = true; | |
575 PrintVMMessages = PrintCompilation = true; | |
576 PrintInlining = PrintAssembly = true; | |
577 tty->flush(); | |
578 } | |
579 | |
580 | |
581 extern "C" void ndebug() { // undo debug() | |
582 Command c("ndebug"); | |
583 PrintCompilation = false; | |
584 PrintInlining = PrintAssembly = false; | |
585 tty->flush(); | |
586 } | |
587 | |
588 | |
589 extern "C" void flush() { | |
590 Command c("flush"); | |
591 tty->flush(); | |
592 } | |
593 | |
4944 | 594 extern "C" void events() { |
595 Command c("events"); | |
596 Events::print(); | |
597 } | |
0 | 598 |
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599 extern "C" Method* findm(intptr_t pc) { |
0 | 600 Command c("findm"); |
601 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
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602 return (nm == NULL) ? (Method*)NULL : nm->method(); |
0 | 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 | |
623 // Another interface that isn't ambiguous in dbx. | |
624 // Can we someday rename the other find to hsfind? | |
625 extern "C" void hsfind(intptr_t x) { | |
626 Command c("hsfind"); | |
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627 os::print_location(tty, x, false); |
0 | 628 } |
629 | |
630 | |
631 extern "C" void find(intptr_t x) { | |
632 Command c("find"); | |
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633 os::print_location(tty, x, false); |
0 | 634 } |
635 | |
636 | |
637 extern "C" void findpc(intptr_t x) { | |
638 Command c("findpc"); | |
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639 os::print_location(tty, x, true); |
0 | 640 } |
641 | |
642 | |
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643 // Need method pointer to find bcp, when not in permgen. |
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644 extern "C" void findbcp(intptr_t method, intptr_t bcp) { |
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645 Command c("findbcp"); |
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646 Method* mh = (Method*)method; |
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647 if (!mh->is_native()) { |
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648 tty->print_cr("bci_from(%p) = %d; print_codes():", |
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649 mh, mh->bci_from(address(bcp))); |
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650 mh->print_codes_on(tty); |
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651 } |
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652 } |
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653 |
0 | 654 // int versions of all methods to avoid having to type type casts in the debugger |
655 | |
656 void pp(intptr_t p) { pp((void*)p); } | |
657 void pp(oop p) { pp((void*)p); } | |
658 | |
659 void help() { | |
660 Command c("help"); | |
661 tty->print_cr("basic"); | |
662 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
663 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
664 tty->print_cr(" ps() - print current thread stack"); | |
665 tty->print_cr(" pss() - print all thread stacks"); | |
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666 tty->print_cr(" pm(int pc) - print Method* given compiled PC"); |
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667 tty->print_cr(" findm(intptr_t pc) - finds Method*"); |
0 | 668 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); |
669 | |
670 tty->print_cr("misc."); | |
671 tty->print_cr(" flush() - flushes the log file"); | |
4944 | 672 tty->print_cr(" events() - dump events from ring buffers"); |
0 | 673 |
674 | |
675 tty->print_cr("compiler debugging"); | |
676 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
677 tty->print_cr(" ndebug() - undo debug"); | |
678 } | |
679 | |
680 #if 0 | |
681 | |
682 // BobV's command parser for debugging on windows when nothing else works. | |
683 | |
684 enum CommandID { | |
685 CMDID_HELP, | |
686 CMDID_QUIT, | |
687 CMDID_HSFIND, | |
688 CMDID_PSS, | |
689 CMDID_PS, | |
690 CMDID_PSF, | |
691 CMDID_FINDM, | |
692 CMDID_FINDNM, | |
693 CMDID_PP, | |
694 CMDID_BPT, | |
695 CMDID_EXIT, | |
696 CMDID_VERIFY, | |
697 CMDID_THREADS, | |
698 CMDID_ILLEGAL = 99 | |
699 }; | |
700 | |
701 struct CommandParser { | |
702 char *name; | |
703 CommandID code; | |
704 char *description; | |
705 }; | |
706 | |
707 struct CommandParser CommandList[] = { | |
708 (char *)"help", CMDID_HELP, " Dump this list", | |
709 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
710 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
711 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
712 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
713 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
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714 (char *)"findm", CMDID_FINDM, " Find a Method* from a PC", |
0 | 715 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", |
716 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
717 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
718 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
719 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
720 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
721 (char *)0, CMDID_ILLEGAL | |
722 }; | |
723 | |
724 | |
725 // get_debug_command() | |
726 // | |
727 // Read a command from standard input. | |
728 // This is useful when you have a debugger | |
729 // which doesn't support calling into functions. | |
730 // | |
731 void get_debug_command() | |
732 { | |
733 ssize_t count; | |
734 int i,j; | |
735 bool gotcommand; | |
736 intptr_t addr; | |
737 char buffer[256]; | |
738 nmethod *nm; | |
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739 Method* m; |
0 | 740 |
741 tty->print_cr("You have entered the diagnostic command interpreter"); | |
742 tty->print("The supported commands are:\n"); | |
743 for ( i=0; ; i++ ) { | |
744 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
745 break; | |
746 tty->print_cr(" %s \n", CommandList[i].name ); | |
747 } | |
748 | |
749 while ( 1 ) { | |
750 gotcommand = false; | |
751 tty->print("Please enter a command: "); | |
752 count = scanf("%s", buffer) ; | |
753 if ( count >=0 ) { | |
754 for ( i=0; ; i++ ) { | |
755 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
756 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
757 break; | |
758 } | |
759 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
760 gotcommand = true; | |
761 switch ( CommandList[i].code ) { | |
762 case CMDID_PS: | |
763 ps(); | |
764 break; | |
765 case CMDID_PSS: | |
766 pss(); | |
767 break; | |
768 case CMDID_PSF: | |
769 psf(); | |
770 break; | |
771 case CMDID_FINDM: | |
772 tty->print("Please enter the hex addr to pass to findm: "); | |
773 scanf("%I64X", &addr); | |
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774 m = (Method*)findm(addr); |
0 | 775 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); |
776 break; | |
777 case CMDID_FINDNM: | |
778 tty->print("Please enter the hex addr to pass to findnm: "); | |
779 scanf("%I64X", &addr); | |
780 nm = (nmethod*)findnm(addr); | |
781 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
782 break; | |
783 case CMDID_PP: | |
784 tty->print("Please enter the hex addr to pass to pp: "); | |
785 scanf("%I64X", &addr); | |
786 pp((void*)addr); | |
787 break; | |
788 case CMDID_EXIT: | |
789 exit(0); | |
790 case CMDID_HELP: | |
791 tty->print("Here are the supported commands: "); | |
792 for ( j=0; ; j++ ) { | |
793 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
794 break; | |
795 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
796 CommandList[j].description ); | |
797 } | |
798 break; | |
799 case CMDID_QUIT: | |
800 return; | |
801 break; | |
802 case CMDID_BPT: | |
803 BREAKPOINT; | |
804 break; | |
805 case CMDID_VERIFY: | |
806 verify();; | |
807 break; | |
808 case CMDID_THREADS: | |
809 threads();; | |
810 break; | |
811 case CMDID_HSFIND: | |
812 tty->print("Please enter the hex addr to pass to hsfind: "); | |
813 scanf("%I64X", &addr); | |
814 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
815 hsfind(addr); | |
816 break; | |
817 default: | |
818 case CMDID_ILLEGAL: | |
819 break; | |
820 } | |
821 } | |
822 } | |
823 } | |
824 } | |
825 } | |
826 #endif | |
827 | |
4006 | 828 #endif // !PRODUCT |