Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/debug.cpp @ 6885:685df3c6f84b
7045397: NPG: Add freelists to class loader arenas.
Reviewed-by: coleenp, stefank, jprovino, ohair
author | jmasa |
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date | Tue, 18 Sep 2012 23:35:42 -0700 |
parents | 4202510ee0fe |
children | 679e6584c177 f34d701e952e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 | |
3960 | 65 #ifdef TARGET_OS_FAMILY_bsd |
66 # include "os_bsd.inline.hpp" | |
67 # include "thread_bsd.inline.hpp" | |
68 #endif | |
0 | 69 |
70 #ifndef ASSERT | |
71 # ifdef _DEBUG | |
72 // NOTE: don't turn the lines below into a comment -- if you're getting | |
73 // a compile error here, change the settings to define ASSERT | |
74 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
75 functions that do not slow down the system too much and thus can be left in optimized code. | |
76 On the other hand, the code should not be included in a production version. | |
77 # endif // _DEBUG | |
78 #endif // ASSERT | |
79 | |
80 | |
81 #ifdef _DEBUG | |
82 # ifndef ASSERT | |
83 configuration error: ASSERT must be defined in debug version | |
84 # endif // ASSERT | |
85 #endif // _DEBUG | |
86 | |
87 | |
88 #ifdef PRODUCT | |
89 # if -defined _DEBUG || -defined ASSERT | |
90 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
91 # endif | |
92 #endif // PRODUCT | |
93 | |
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94 FormatBufferResource::FormatBufferResource(const char * format, ...) |
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95 : FormatBufferBase((char*)resource_allocate_bytes(RES_BUFSZ)) { |
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96 va_list argp; |
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97 va_start(argp, format); |
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98 jio_vsnprintf(_buf, RES_BUFSZ, format, argp); |
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99 va_end(argp); |
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100 } |
0 | 101 |
102 void warning(const char* format, ...) { | |
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103 if (PrintWarnings) { |
6759 | 104 FILE* const err = defaultStream::error_stream(); |
105 jio_fprintf(err, "%s warning: ", VM_Version::vm_name()); | |
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106 va_list ap; |
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107 va_start(ap, format); |
6759 | 108 vfprintf(err, format, ap); |
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109 va_end(ap); |
6759 | 110 fputc('\n', err); |
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111 } |
0 | 112 if (BreakAtWarning) BREAKPOINT; |
113 } | |
114 | |
115 #ifndef PRODUCT | |
116 | |
117 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
118 | |
119 static const char* last_file_name = NULL; | |
120 static int last_line_no = -1; | |
121 | |
122 // assert/guarantee/... may happen very early during VM initialization. | |
123 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
124 // example, don't use tty. | |
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125 bool error_is_suppressed(const char* file_name, int line_no) { |
0 | 126 // The following 1-element cache requires that passed-in |
127 // file names are always only constant literals. | |
128 if (file_name == last_file_name && line_no == last_line_no) return true; | |
129 | |
130 int file_name_len = (int)strlen(file_name); | |
131 char separator = os::file_separator()[0]; | |
132 const char* base_name = strrchr(file_name, separator); | |
133 if (base_name == NULL) | |
134 base_name = file_name; | |
135 | |
136 // scan the SuppressErrorAt option | |
137 const char* cp = SuppressErrorAt; | |
138 for (;;) { | |
139 const char* sfile; | |
140 int sfile_len; | |
141 int sline; | |
142 bool noisy; | |
143 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
144 if ((*cp) == '\0') break; | |
145 sfile = cp; | |
146 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
147 sfile_len = cp - sfile; | |
148 if ((*cp) == ':') cp++; | |
149 sline = 0; | |
150 while ((*cp) != '\0' && isdigit(*cp)) { | |
151 sline *= 10; | |
152 sline += (*cp) - '0'; | |
153 cp++; | |
154 } | |
155 // "file:line!" means the assert suppression is not silent | |
156 noisy = ((*cp) == '!'); | |
157 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
158 // match the line | |
159 if (sline != 0) { | |
160 if (sline != line_no) continue; | |
161 } | |
162 // match the file | |
163 if (sfile_len > 0) { | |
164 const char* look = file_name; | |
165 const char* look_max = file_name + file_name_len - sfile_len; | |
166 const char* foundp; | |
167 bool match = false; | |
168 while (!match | |
169 && (foundp = strchr(look, sfile[0])) != NULL | |
170 && foundp <= look_max) { | |
171 match = true; | |
172 for (int i = 1; i < sfile_len; i++) { | |
173 if (sfile[i] != foundp[i]) { | |
174 match = false; | |
175 break; | |
176 } | |
177 } | |
178 look = foundp + 1; | |
179 } | |
180 if (!match) continue; | |
181 } | |
182 // got a match! | |
183 if (noisy) { | |
184 fdStream out(defaultStream::output_fd()); | |
185 out.print_raw("[error suppressed at "); | |
186 out.print_raw(base_name); | |
187 char buf[16]; | |
188 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
189 out.print_raw_cr(buf); | |
190 } else { | |
191 // update 1-element cache for fast silent matches | |
192 last_file_name = file_name; | |
193 last_line_no = line_no; | |
194 } | |
195 return true; | |
196 } | |
197 | |
198 if (!is_error_reported()) { | |
199 // print a friendly hint: | |
200 fdStream out(defaultStream::output_fd()); | |
201 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
202 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
203 out.print_raw (base_name); | |
204 char buf[16]; | |
205 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
206 out.print_raw_cr(buf); | |
207 } | |
208 return false; | |
209 } | |
210 | |
211 #undef is_token_break | |
212 | |
213 #else | |
214 | |
215 // Place-holder for non-existent suppression check: | |
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216 #define error_is_suppressed(file_name, line_no) (false) |
0 | 217 |
4006 | 218 #endif // !PRODUCT |
0 | 219 |
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220 void report_vm_error(const char* file, int line, const char* error_msg, |
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221 const char* detail_msg) |
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222 { |
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223 if (Debugging || error_is_suppressed(file, line)) return; |
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224 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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225 VMError err(thread, file, line, error_msg, detail_msg); |
0 | 226 err.report_and_die(); |
227 } | |
228 | |
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229 void report_fatal(const char* file, int line, const char* message) |
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230 { |
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231 report_vm_error(file, line, "fatal error", message); |
0 | 232 } |
233 | |
234 // Used by report_vm_out_of_memory to detect recursion. | |
235 static jint _exiting_out_of_mem = 0; | |
236 | |
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237 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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238 const char* message) { |
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239 if (Debugging) return; |
0 | 240 |
241 // We try to gather additional information for the first out of memory | |
242 // error only; gathering additional data might cause an allocation and a | |
243 // recursive out_of_memory condition. | |
244 | |
245 const jint exiting = 1; | |
246 // If we succeed in changing the value, we're the first one in. | |
247 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
248 | |
249 if (first_time_here) { | |
250 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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251 VMError(thread, file, line, size, message).report_and_die(); |
0 | 252 } |
227
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253 |
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254 // Dump core and abort |
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255 vm_abort(true); |
0 | 256 } |
257 | |
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258 void report_should_not_call(const char* file, int line) { |
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259 report_vm_error(file, line, "ShouldNotCall()"); |
0 | 260 } |
261 | |
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262 void report_should_not_reach_here(const char* file, int line) { |
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263 report_vm_error(file, line, "ShouldNotReachHere()"); |
0 | 264 } |
265 | |
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266 void report_should_not_reach_here2(const char* file, int line, const char* message) { |
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267 report_vm_error(file, line, "ShouldNotReachHere()", message); |
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268 } |
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269 |
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270 void report_unimplemented(const char* file, int line) { |
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271 report_vm_error(file, line, "Unimplemented()"); |
0 | 272 } |
273 | |
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274 void report_untested(const char* file, int line, const char* message) { |
0 | 275 #ifndef PRODUCT |
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276 warning("Untested: %s in %s: %d\n", message, file, line); |
4006 | 277 #endif // !PRODUCT |
0 | 278 } |
279 | |
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280 void report_out_of_shared_space(SharedSpaceType shared_space) { |
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281 static const char* name[] = { |
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282 "native memory for metadata", |
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283 "shared read only space", |
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284 "shared read write space", |
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285 "shared miscellaneous data space" |
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286 }; |
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287 static const char* flag[] = { |
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288 "Metaspace", |
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289 "SharedReadOnlySize", |
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290 "SharedReadWriteSize", |
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291 "SharedMiscDataSize" |
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292 }; |
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293 |
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294 warning("\nThe %s is not large enough\n" |
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295 "to preload requested classes. Use -XX:%s=\n" |
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296 "to increase the initial size of %s.\n", |
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297 name[shared_space], flag[shared_space], name[shared_space]); |
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298 exit(2); |
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299 } |
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300 |
0 | 301 void report_java_out_of_memory(const char* message) { |
302 static jint out_of_memory_reported = 0; | |
303 | |
304 // A number of threads may attempt to report OutOfMemoryError at around the | |
305 // same time. To avoid dumping the heap or executing the data collection | |
306 // commands multiple times we just do it once when the first threads reports | |
307 // the error. | |
308 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
309 // create heap dump before OnOutOfMemoryError commands are executed | |
310 if (HeapDumpOnOutOfMemoryError) { | |
311 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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312 HeapDumper::dump_heap_from_oome(); |
0 | 313 } |
314 | |
315 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
316 VMError err(message); | |
317 err.report_java_out_of_memory(); | |
318 } | |
319 } | |
320 } | |
321 | |
322 static bool error_reported = false; | |
323 | |
324 // call this when the VM is dying--it might loosen some asserts | |
325 void set_error_reported() { | |
326 error_reported = true; | |
327 } | |
328 | |
329 bool is_error_reported() { | |
330 return error_reported; | |
331 } | |
332 | |
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333 #ifndef PRODUCT |
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334 #include <signal.h> |
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335 |
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336 void test_error_handler(size_t test_num) |
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337 { |
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338 if (test_num == 0) return; |
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339 |
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340 // If asserts are disabled, use the corresponding guarantee instead. |
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341 size_t n = test_num; |
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342 NOT_DEBUG(if (n <= 2) n += 2); |
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343 |
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344 const char* const str = "hello"; |
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345 const size_t num = (size_t)os::vm_page_size(); |
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346 |
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347 const char* const eol = os::line_separator(); |
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348 const char* const msg = "this message should be truncated during formatting"; |
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349 |
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350 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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351 switch (n) { |
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352 case 1: assert(str == NULL, "expected null"); |
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353 case 2: assert(num == 1023 && *str == 'X', |
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354 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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355 case 3: guarantee(str == NULL, "expected null"); |
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356 case 4: guarantee(num == 1023 && *str == 'X', |
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357 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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358 case 5: fatal("expected null"); |
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359 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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360 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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361 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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362 "%s%s# %s%s# %s%s# %s%s# %s", |
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363 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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364 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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365 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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366 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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367 case 9: ShouldNotCallThis(); |
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368 case 10: ShouldNotReachHere(); |
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369 case 11: Unimplemented(); |
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370 // This is last because it does not generate an hs_err* file on Windows. |
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371 case 12: os::signal_raise(SIGSEGV); |
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372 |
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373 default: ShouldNotReachHere(); |
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374 } |
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375 } |
4006 | 376 #endif // !PRODUCT |
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377 |
0 | 378 // ------ helper functions for debugging go here ------------ |
379 | |
380 // All debug entries should be wrapped with a stack allocated | |
381 // Command object. It makes sure a resource mark is set and | |
382 // flushes the logfile to prevent file sharing problems. | |
383 | |
384 class Command : public StackObj { | |
385 private: | |
386 ResourceMark rm; | |
387 ResetNoHandleMark rnhm; | |
388 HandleMark hm; | |
389 bool debug_save; | |
390 public: | |
391 static int level; | |
392 Command(const char* str) { | |
393 debug_save = Debugging; | |
394 Debugging = true; | |
395 if (level++ > 0) return; | |
396 tty->cr(); | |
397 tty->print_cr("\"Executing %s\"", str); | |
398 } | |
399 | |
4006 | 400 ~Command() { |
401 tty->flush(); | |
402 Debugging = debug_save; | |
403 level--; | |
404 } | |
0 | 405 }; |
406 | |
407 int Command::level = 0; | |
408 | |
4006 | 409 #ifndef PRODUCT |
410 | |
0 | 411 extern "C" void blob(CodeBlob* cb) { |
412 Command c("blob"); | |
413 cb->print(); | |
414 } | |
415 | |
416 | |
417 extern "C" void dump_vtable(address p) { | |
418 Command c("dump_vtable"); | |
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419 Klass* k = (Klass*)p; |
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420 InstanceKlass::cast(k)->vtable()->print(); |
0 | 421 } |
422 | |
423 | |
424 extern "C" void nm(intptr_t p) { | |
425 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
426 Command c("nm"); | |
427 CodeBlob* cb = CodeCache::find_blob((address)p); | |
428 if (cb == NULL) { | |
429 tty->print_cr("NULL"); | |
430 } else { | |
431 cb->print(); | |
432 } | |
433 } | |
434 | |
435 | |
436 extern "C" void disnm(intptr_t p) { | |
437 Command c("disnm"); | |
438 CodeBlob* cb = CodeCache::find_blob((address) p); | |
2008 | 439 nmethod* nm = cb->as_nmethod_or_null(); |
440 if (nm) { | |
441 nm->print(); | |
442 Disassembler::decode(nm); | |
443 } else { | |
444 cb->print(); | |
445 Disassembler::decode(cb); | |
446 } | |
0 | 447 } |
448 | |
449 | |
450 extern "C" void printnm(intptr_t p) { | |
451 char buffer[256]; | |
452 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
453 Command c(buffer); | |
454 CodeBlob* cb = CodeCache::find_blob((address) p); | |
455 if (cb->is_nmethod()) { | |
456 nmethod* nm = (nmethod*)cb; | |
457 nm->print_nmethod(true); | |
458 } | |
459 } | |
460 | |
461 | |
462 extern "C" void universe() { | |
463 Command c("universe"); | |
464 Universe::print(); | |
465 } | |
466 | |
467 | |
468 extern "C" void verify() { | |
469 // try to run a verify on the entire system | |
470 // note: this may not be safe if we're not at a safepoint; for debugging, | |
471 // this manipulates the safepoint settings to avoid assertion failures | |
472 Command c("universe verify"); | |
473 bool safe = SafepointSynchronize::is_at_safepoint(); | |
474 if (!safe) { | |
475 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
476 SafepointSynchronize::set_is_at_safepoint(); | |
477 } | |
478 // Ensure Eden top is correct before verification | |
479 Universe::heap()->prepare_for_verify(); | |
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480 Universe::verify(); |
0 | 481 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); |
482 } | |
483 | |
484 | |
485 extern "C" void pp(void* p) { | |
486 Command c("pp"); | |
487 FlagSetting fl(PrintVMMessages, true); | |
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488 FlagSetting f2(DisplayVMOutput, true); |
0 | 489 if (Universe::heap()->is_in(p)) { |
490 oop obj = oop(p); | |
491 obj->print(); | |
492 } else { | |
4006 | 493 tty->print(PTR_FORMAT, p); |
0 | 494 } |
495 } | |
496 | |
497 | |
498 // pv: print vm-printable object | |
499 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
500 extern "C" void findpc(intptr_t x); | |
501 | |
4006 | 502 #endif // !PRODUCT |
503 | |
0 | 504 extern "C" void ps() { // print stack |
4006 | 505 if (Thread::current() == NULL) return; |
0 | 506 Command c("ps"); |
507 | |
508 | |
509 // Prints the stack of the current Java thread | |
510 JavaThread* p = JavaThread::active(); | |
511 tty->print(" for thread: "); | |
512 p->print(); | |
513 tty->cr(); | |
514 | |
515 if (p->has_last_Java_frame()) { | |
516 // If the last_Java_fp is set we are in C land and | |
517 // can call the standard stack_trace function. | |
4006 | 518 #ifdef PRODUCT |
519 p->print_stack(); | |
520 } else { | |
521 tty->print_cr("Cannot find the last Java frame, printing stack disabled."); | |
522 #else // !PRODUCT | |
0 | 523 p->trace_stack(); |
524 } else { | |
525 frame f = os::current_frame(); | |
526 RegisterMap reg_map(p); | |
527 f = f.sender(®_map); | |
528 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
529 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
530 pd_ps(f); | |
4006 | 531 #endif // PRODUCT |
0 | 532 } |
533 | |
534 } | |
535 | |
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536 extern "C" void pfl() { |
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537 // print frame layout |
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538 Command c("pfl"); |
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539 JavaThread* p = JavaThread::active(); |
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540 tty->print(" for thread: "); |
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541 p->print(); |
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542 tty->cr(); |
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543 if (p->has_last_Java_frame()) { |
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544 p->print_frame_layout(); |
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545 } |
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546 } |
0 | 547 |
4006 | 548 #ifndef PRODUCT |
549 | |
0 | 550 extern "C" void psf() { // print stack frames |
551 { | |
552 Command c("psf"); | |
553 JavaThread* p = JavaThread::active(); | |
554 tty->print(" for thread: "); | |
555 p->print(); | |
556 tty->cr(); | |
557 if (p->has_last_Java_frame()) { | |
558 p->trace_frames(); | |
559 } | |
560 } | |
561 } | |
562 | |
563 | |
564 extern "C" void threads() { | |
565 Command c("threads"); | |
566 Threads::print(false, true); | |
567 } | |
568 | |
569 | |
570 extern "C" void psd() { | |
571 Command c("psd"); | |
572 SystemDictionary::print(); | |
573 } | |
574 | |
575 | |
576 extern "C" void safepoints() { | |
577 Command c("safepoints"); | |
578 SafepointSynchronize::print_state(); | |
579 } | |
580 | |
4006 | 581 #endif // !PRODUCT |
0 | 582 |
583 extern "C" void pss() { // print all stacks | |
4006 | 584 if (Thread::current() == NULL) return; |
0 | 585 Command c("pss"); |
4006 | 586 Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
0 | 587 } |
588 | |
4006 | 589 #ifndef PRODUCT |
0 | 590 |
591 extern "C" void debug() { // to set things up for compiler debugging | |
592 Command c("debug"); | |
593 WizardMode = true; | |
594 PrintVMMessages = PrintCompilation = true; | |
595 PrintInlining = PrintAssembly = true; | |
596 tty->flush(); | |
597 } | |
598 | |
599 | |
600 extern "C" void ndebug() { // undo debug() | |
601 Command c("ndebug"); | |
602 PrintCompilation = false; | |
603 PrintInlining = PrintAssembly = false; | |
604 tty->flush(); | |
605 } | |
606 | |
607 | |
608 extern "C" void flush() { | |
609 Command c("flush"); | |
610 tty->flush(); | |
611 } | |
612 | |
4944 | 613 extern "C" void events() { |
614 Command c("events"); | |
615 Events::print(); | |
616 } | |
0 | 617 |
618 // Given a heap address that was valid before the most recent GC, if | |
619 // the oop that used to contain it is still live, prints the new | |
620 // location of the oop and the address. Useful for tracking down | |
621 // certain kinds of naked oop and oop map bugs. | |
622 extern "C" void pnl(intptr_t old_heap_addr) { | |
623 // Print New Location of old heap address | |
624 Command c("pnl"); | |
625 #ifndef VALIDATE_MARK_SWEEP | |
626 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
627 #else | |
628 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
629 #endif | |
630 } | |
631 | |
632 | |
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633 extern "C" Method* findm(intptr_t pc) { |
0 | 634 Command c("findm"); |
635 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
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636 return (nm == NULL) ? (Method*)NULL : nm->method(); |
0 | 637 } |
638 | |
639 | |
640 extern "C" nmethod* findnm(intptr_t addr) { | |
641 Command c("findnm"); | |
642 return CodeCache::find_nmethod((address)addr); | |
643 } | |
644 | |
645 static address same_page(address x, address y) { | |
646 intptr_t page_bits = -os::vm_page_size(); | |
647 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
648 return x; | |
649 } else if (x > y) { | |
650 return (address)(intptr_t(y) | ~page_bits) + 1; | |
651 } else { | |
652 return (address)(intptr_t(y) & page_bits); | |
653 } | |
654 } | |
655 | |
656 | |
657 // Another interface that isn't ambiguous in dbx. | |
658 // Can we someday rename the other find to hsfind? | |
659 extern "C" void hsfind(intptr_t x) { | |
660 Command c("hsfind"); | |
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661 os::print_location(tty, x, false); |
0 | 662 } |
663 | |
664 | |
665 extern "C" void find(intptr_t x) { | |
666 Command c("find"); | |
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667 os::print_location(tty, x, false); |
0 | 668 } |
669 | |
670 | |
671 extern "C" void findpc(intptr_t x) { | |
672 Command c("findpc"); | |
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673 os::print_location(tty, x, true); |
0 | 674 } |
675 | |
676 | |
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677 // Need method pointer to find bcp, when not in permgen. |
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678 extern "C" void findbcp(intptr_t method, intptr_t bcp) { |
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679 Command c("findbcp"); |
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680 Method* mh = (Method*)method; |
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681 if (!mh->is_native()) { |
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682 tty->print_cr("bci_from(%p) = %d; print_codes():", |
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683 mh, mh->bci_from(address(bcp))); |
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684 mh->print_codes_on(tty); |
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685 } |
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686 } |
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687 |
0 | 688 // int versions of all methods to avoid having to type type casts in the debugger |
689 | |
690 void pp(intptr_t p) { pp((void*)p); } | |
691 void pp(oop p) { pp((void*)p); } | |
692 | |
693 void help() { | |
694 Command c("help"); | |
695 tty->print_cr("basic"); | |
696 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
697 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
698 tty->print_cr(" ps() - print current thread stack"); | |
699 tty->print_cr(" pss() - print all thread stacks"); | |
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700 tty->print_cr(" pm(int pc) - print Method* given compiled PC"); |
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701 tty->print_cr(" findm(intptr_t pc) - finds Method*"); |
0 | 702 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); |
703 | |
704 tty->print_cr("misc."); | |
705 tty->print_cr(" flush() - flushes the log file"); | |
4944 | 706 tty->print_cr(" events() - dump events from ring buffers"); |
0 | 707 |
708 | |
709 tty->print_cr("compiler debugging"); | |
710 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
711 tty->print_cr(" ndebug() - undo debug"); | |
712 } | |
713 | |
714 #if 0 | |
715 | |
716 // BobV's command parser for debugging on windows when nothing else works. | |
717 | |
718 enum CommandID { | |
719 CMDID_HELP, | |
720 CMDID_QUIT, | |
721 CMDID_HSFIND, | |
722 CMDID_PSS, | |
723 CMDID_PS, | |
724 CMDID_PSF, | |
725 CMDID_FINDM, | |
726 CMDID_FINDNM, | |
727 CMDID_PP, | |
728 CMDID_BPT, | |
729 CMDID_EXIT, | |
730 CMDID_VERIFY, | |
731 CMDID_THREADS, | |
732 CMDID_ILLEGAL = 99 | |
733 }; | |
734 | |
735 struct CommandParser { | |
736 char *name; | |
737 CommandID code; | |
738 char *description; | |
739 }; | |
740 | |
741 struct CommandParser CommandList[] = { | |
742 (char *)"help", CMDID_HELP, " Dump this list", | |
743 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
744 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
745 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
746 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
747 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
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748 (char *)"findm", CMDID_FINDM, " Find a Method* from a PC", |
0 | 749 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", |
750 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
751 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
752 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
753 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
754 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
755 (char *)0, CMDID_ILLEGAL | |
756 }; | |
757 | |
758 | |
759 // get_debug_command() | |
760 // | |
761 // Read a command from standard input. | |
762 // This is useful when you have a debugger | |
763 // which doesn't support calling into functions. | |
764 // | |
765 void get_debug_command() | |
766 { | |
767 ssize_t count; | |
768 int i,j; | |
769 bool gotcommand; | |
770 intptr_t addr; | |
771 char buffer[256]; | |
772 nmethod *nm; | |
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773 Method* m; |
0 | 774 |
775 tty->print_cr("You have entered the diagnostic command interpreter"); | |
776 tty->print("The supported commands are:\n"); | |
777 for ( i=0; ; i++ ) { | |
778 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
779 break; | |
780 tty->print_cr(" %s \n", CommandList[i].name ); | |
781 } | |
782 | |
783 while ( 1 ) { | |
784 gotcommand = false; | |
785 tty->print("Please enter a command: "); | |
786 count = scanf("%s", buffer) ; | |
787 if ( count >=0 ) { | |
788 for ( i=0; ; i++ ) { | |
789 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
790 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
791 break; | |
792 } | |
793 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
794 gotcommand = true; | |
795 switch ( CommandList[i].code ) { | |
796 case CMDID_PS: | |
797 ps(); | |
798 break; | |
799 case CMDID_PSS: | |
800 pss(); | |
801 break; | |
802 case CMDID_PSF: | |
803 psf(); | |
804 break; | |
805 case CMDID_FINDM: | |
806 tty->print("Please enter the hex addr to pass to findm: "); | |
807 scanf("%I64X", &addr); | |
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808 m = (Method*)findm(addr); |
0 | 809 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); |
810 break; | |
811 case CMDID_FINDNM: | |
812 tty->print("Please enter the hex addr to pass to findnm: "); | |
813 scanf("%I64X", &addr); | |
814 nm = (nmethod*)findnm(addr); | |
815 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
816 break; | |
817 case CMDID_PP: | |
818 tty->print("Please enter the hex addr to pass to pp: "); | |
819 scanf("%I64X", &addr); | |
820 pp((void*)addr); | |
821 break; | |
822 case CMDID_EXIT: | |
823 exit(0); | |
824 case CMDID_HELP: | |
825 tty->print("Here are the supported commands: "); | |
826 for ( j=0; ; j++ ) { | |
827 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
828 break; | |
829 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
830 CommandList[j].description ); | |
831 } | |
832 break; | |
833 case CMDID_QUIT: | |
834 return; | |
835 break; | |
836 case CMDID_BPT: | |
837 BREAKPOINT; | |
838 break; | |
839 case CMDID_VERIFY: | |
840 verify();; | |
841 break; | |
842 case CMDID_THREADS: | |
843 threads();; | |
844 break; | |
845 case CMDID_HSFIND: | |
846 tty->print("Please enter the hex addr to pass to hsfind: "); | |
847 scanf("%I64X", &addr); | |
848 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
849 hsfind(addr); | |
850 break; | |
851 default: | |
852 case CMDID_ILLEGAL: | |
853 break; | |
854 } | |
855 } | |
856 } | |
857 } | |
858 } | |
859 } | |
860 #endif | |
861 | |
4006 | 862 #endif // !PRODUCT |