Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 4944:09d00c18e323
7145537: minor tweaks to LogEvents
Reviewed-by: kvn, twisti
| author | never |
|---|---|
| date | Wed, 15 Feb 2012 10:12:55 -0800 |
| parents | aa3d708d67c4 |
| children | 6c5b7a6becc8 |
| rev | line source |
|---|---|
| 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 | |
| 94 | |
| 95 void warning(const char* format, ...) { | |
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96 if (PrintWarnings) { |
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97 // In case error happens before init or during shutdown |
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98 if (tty == NULL) ostream_init(); |
| 0 | 99 |
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100 tty->print("%s warning: ", VM_Version::vm_name()); |
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101 va_list ap; |
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102 va_start(ap, format); |
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103 tty->vprint_cr(format, ap); |
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104 va_end(ap); |
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105 } |
| 0 | 106 if (BreakAtWarning) BREAKPOINT; |
| 107 } | |
| 108 | |
| 109 #ifndef PRODUCT | |
| 110 | |
| 111 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
| 112 | |
| 113 static const char* last_file_name = NULL; | |
| 114 static int last_line_no = -1; | |
| 115 | |
| 116 // assert/guarantee/... may happen very early during VM initialization. | |
| 117 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
| 118 // example, don't use tty. | |
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119 bool error_is_suppressed(const char* file_name, int line_no) { |
| 0 | 120 // The following 1-element cache requires that passed-in |
| 121 // file names are always only constant literals. | |
| 122 if (file_name == last_file_name && line_no == last_line_no) return true; | |
| 123 | |
| 124 int file_name_len = (int)strlen(file_name); | |
| 125 char separator = os::file_separator()[0]; | |
| 126 const char* base_name = strrchr(file_name, separator); | |
| 127 if (base_name == NULL) | |
| 128 base_name = file_name; | |
| 129 | |
| 130 // scan the SuppressErrorAt option | |
| 131 const char* cp = SuppressErrorAt; | |
| 132 for (;;) { | |
| 133 const char* sfile; | |
| 134 int sfile_len; | |
| 135 int sline; | |
| 136 bool noisy; | |
| 137 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
| 138 if ((*cp) == '\0') break; | |
| 139 sfile = cp; | |
| 140 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
| 141 sfile_len = cp - sfile; | |
| 142 if ((*cp) == ':') cp++; | |
| 143 sline = 0; | |
| 144 while ((*cp) != '\0' && isdigit(*cp)) { | |
| 145 sline *= 10; | |
| 146 sline += (*cp) - '0'; | |
| 147 cp++; | |
| 148 } | |
| 149 // "file:line!" means the assert suppression is not silent | |
| 150 noisy = ((*cp) == '!'); | |
| 151 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
| 152 // match the line | |
| 153 if (sline != 0) { | |
| 154 if (sline != line_no) continue; | |
| 155 } | |
| 156 // match the file | |
| 157 if (sfile_len > 0) { | |
| 158 const char* look = file_name; | |
| 159 const char* look_max = file_name + file_name_len - sfile_len; | |
| 160 const char* foundp; | |
| 161 bool match = false; | |
| 162 while (!match | |
| 163 && (foundp = strchr(look, sfile[0])) != NULL | |
| 164 && foundp <= look_max) { | |
| 165 match = true; | |
| 166 for (int i = 1; i < sfile_len; i++) { | |
| 167 if (sfile[i] != foundp[i]) { | |
| 168 match = false; | |
| 169 break; | |
| 170 } | |
| 171 } | |
| 172 look = foundp + 1; | |
| 173 } | |
| 174 if (!match) continue; | |
| 175 } | |
| 176 // got a match! | |
| 177 if (noisy) { | |
| 178 fdStream out(defaultStream::output_fd()); | |
| 179 out.print_raw("[error suppressed at "); | |
| 180 out.print_raw(base_name); | |
| 181 char buf[16]; | |
| 182 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
| 183 out.print_raw_cr(buf); | |
| 184 } else { | |
| 185 // update 1-element cache for fast silent matches | |
| 186 last_file_name = file_name; | |
| 187 last_line_no = line_no; | |
| 188 } | |
| 189 return true; | |
| 190 } | |
| 191 | |
| 192 if (!is_error_reported()) { | |
| 193 // print a friendly hint: | |
| 194 fdStream out(defaultStream::output_fd()); | |
| 195 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
| 196 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
| 197 out.print_raw (base_name); | |
| 198 char buf[16]; | |
| 199 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
| 200 out.print_raw_cr(buf); | |
| 201 } | |
| 202 return false; | |
| 203 } | |
| 204 | |
| 205 #undef is_token_break | |
| 206 | |
| 207 #else | |
| 208 | |
| 209 // Place-holder for non-existent suppression check: | |
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210 #define error_is_suppressed(file_name, line_no) (false) |
| 0 | 211 |
| 4006 | 212 #endif // !PRODUCT |
| 0 | 213 |
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214 void report_vm_error(const char* file, int line, const char* error_msg, |
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215 const char* detail_msg) |
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216 { |
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217 if (Debugging || error_is_suppressed(file, line)) return; |
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218 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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219 VMError err(thread, file, line, error_msg, detail_msg); |
| 0 | 220 err.report_and_die(); |
| 221 } | |
| 222 | |
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223 void report_fatal(const char* file, int line, const char* message) |
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224 { |
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225 report_vm_error(file, line, "fatal error", message); |
| 0 | 226 } |
| 227 | |
| 228 // Used by report_vm_out_of_memory to detect recursion. | |
| 229 static jint _exiting_out_of_mem = 0; | |
| 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 |
| 235 // We try to gather additional information for the first out of memory | |
| 236 // error only; gathering additional data might cause an allocation and a | |
| 237 // recursive out_of_memory condition. | |
| 238 | |
| 239 const jint exiting = 1; | |
| 240 // If we succeed in changing the value, we're the first one in. | |
| 241 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
| 242 | |
| 243 if (first_time_here) { | |
| 244 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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245 VMError(thread, file, line, size, message).report_and_die(); |
| 0 | 246 } |
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247 |
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248 // Dump core and abort |
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249 vm_abort(true); |
| 0 | 250 } |
| 251 | |
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252 void report_should_not_call(const char* file, int line) { |
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253 report_vm_error(file, line, "ShouldNotCall()"); |
| 0 | 254 } |
| 255 | |
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256 void report_should_not_reach_here(const char* file, int line) { |
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257 report_vm_error(file, line, "ShouldNotReachHere()"); |
| 0 | 258 } |
| 259 | |
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260 void report_unimplemented(const char* file, int line) { |
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261 report_vm_error(file, line, "Unimplemented()"); |
| 0 | 262 } |
| 263 | |
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264 void report_untested(const char* file, int line, const char* message) { |
| 0 | 265 #ifndef PRODUCT |
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266 warning("Untested: %s in %s: %d\n", message, file, line); |
| 4006 | 267 #endif // !PRODUCT |
| 0 | 268 } |
| 269 | |
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270 void report_out_of_shared_space(SharedSpaceType shared_space) { |
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271 static const char* name[] = { |
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272 "permanent generation", |
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273 "shared read only space", |
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274 "shared read write space", |
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275 "shared miscellaneous data space" |
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276 }; |
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277 static const char* flag[] = { |
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278 "PermGen", |
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279 "SharedReadOnlySize", |
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280 "SharedReadWriteSize", |
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281 "SharedMiscDataSize" |
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282 }; |
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283 |
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284 warning("\nThe %s is not large enough\n" |
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285 "to preload requested classes. Use -XX:%s=\n" |
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286 "to increase the initial size of %s.\n", |
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287 name[shared_space], flag[shared_space], name[shared_space]); |
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288 exit(2); |
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289 } |
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290 |
| 0 | 291 void report_java_out_of_memory(const char* message) { |
| 292 static jint out_of_memory_reported = 0; | |
| 293 | |
| 294 // A number of threads may attempt to report OutOfMemoryError at around the | |
| 295 // same time. To avoid dumping the heap or executing the data collection | |
| 296 // commands multiple times we just do it once when the first threads reports | |
| 297 // the error. | |
| 298 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
| 299 // create heap dump before OnOutOfMemoryError commands are executed | |
| 300 if (HeapDumpOnOutOfMemoryError) { | |
| 301 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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302 HeapDumper::dump_heap_from_oome(); |
| 0 | 303 } |
| 304 | |
| 305 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
| 306 VMError err(message); | |
| 307 err.report_java_out_of_memory(); | |
| 308 } | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 static bool error_reported = false; | |
| 313 | |
| 314 // call this when the VM is dying--it might loosen some asserts | |
| 315 void set_error_reported() { | |
| 316 error_reported = true; | |
| 317 } | |
| 318 | |
| 319 bool is_error_reported() { | |
| 320 return error_reported; | |
| 321 } | |
| 322 | |
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323 #ifndef PRODUCT |
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324 #include <signal.h> |
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325 |
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326 void test_error_handler(size_t test_num) |
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327 { |
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328 if (test_num == 0) return; |
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329 |
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330 // If asserts are disabled, use the corresponding guarantee instead. |
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331 size_t n = test_num; |
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332 NOT_DEBUG(if (n <= 2) n += 2); |
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333 |
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334 const char* const str = "hello"; |
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335 const size_t num = (size_t)os::vm_page_size(); |
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336 |
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337 const char* const eol = os::line_separator(); |
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338 const char* const msg = "this message should be truncated during formatting"; |
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339 |
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340 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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341 switch (n) { |
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342 case 1: assert(str == NULL, "expected null"); |
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343 case 2: assert(num == 1023 && *str == 'X', |
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344 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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345 case 3: guarantee(str == NULL, "expected null"); |
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346 case 4: guarantee(num == 1023 && *str == 'X', |
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347 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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348 case 5: fatal("expected null"); |
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349 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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350 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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351 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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352 "%s%s# %s%s# %s%s# %s%s# %s", |
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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, eol, |
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355 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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356 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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357 case 9: ShouldNotCallThis(); |
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358 case 10: ShouldNotReachHere(); |
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359 case 11: Unimplemented(); |
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360 // This is last because it does not generate an hs_err* file on Windows. |
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361 case 12: os::signal_raise(SIGSEGV); |
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362 |
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363 default: ShouldNotReachHere(); |
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364 } |
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365 } |
| 4006 | 366 #endif // !PRODUCT |
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367 |
| 0 | 368 // ------ helper functions for debugging go here ------------ |
| 369 | |
| 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 | |
| 4006 | 390 ~Command() { |
| 391 tty->flush(); | |
| 392 Debugging = debug_save; | |
| 393 level--; | |
| 394 } | |
| 0 | 395 }; |
| 396 | |
| 397 int Command::level = 0; | |
| 398 | |
| 4006 | 399 #ifndef PRODUCT |
| 400 | |
| 0 | 401 extern "C" void blob(CodeBlob* cb) { |
| 402 Command c("blob"); | |
| 403 cb->print(); | |
| 404 } | |
| 405 | |
| 406 | |
| 407 extern "C" void dump_vtable(address p) { | |
| 408 Command c("dump_vtable"); | |
| 409 klassOop k = (klassOop)p; | |
| 410 instanceKlass::cast(k)->vtable()->print(); | |
| 411 } | |
| 412 | |
| 413 | |
| 414 extern "C" void nm(intptr_t p) { | |
| 415 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
| 416 Command c("nm"); | |
| 417 CodeBlob* cb = CodeCache::find_blob((address)p); | |
| 418 if (cb == NULL) { | |
| 419 tty->print_cr("NULL"); | |
| 420 } else { | |
| 421 cb->print(); | |
| 422 } | |
| 423 } | |
| 424 | |
| 425 | |
| 426 extern "C" void disnm(intptr_t p) { | |
| 427 Command c("disnm"); | |
| 428 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 2008 | 429 nmethod* nm = cb->as_nmethod_or_null(); |
| 430 if (nm) { | |
| 431 nm->print(); | |
| 432 Disassembler::decode(nm); | |
| 433 } else { | |
| 434 cb->print(); | |
| 435 Disassembler::decode(cb); | |
| 436 } | |
| 0 | 437 } |
| 438 | |
| 439 | |
| 440 extern "C" void printnm(intptr_t p) { | |
| 441 char buffer[256]; | |
| 442 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
| 443 Command c(buffer); | |
| 444 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 445 if (cb->is_nmethod()) { | |
| 446 nmethod* nm = (nmethod*)cb; | |
| 447 nm->print_nmethod(true); | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 | |
| 452 extern "C" void universe() { | |
| 453 Command c("universe"); | |
| 454 Universe::print(); | |
| 455 } | |
| 456 | |
| 457 | |
| 458 extern "C" void verify() { | |
| 459 // try to run a verify on the entire system | |
| 460 // note: this may not be safe if we're not at a safepoint; for debugging, | |
| 461 // this manipulates the safepoint settings to avoid assertion failures | |
| 462 Command c("universe verify"); | |
| 463 bool safe = SafepointSynchronize::is_at_safepoint(); | |
| 464 if (!safe) { | |
| 465 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
| 466 SafepointSynchronize::set_is_at_safepoint(); | |
| 467 } | |
| 468 // Ensure Eden top is correct before verification | |
| 469 Universe::heap()->prepare_for_verify(); | |
| 470 Universe::verify(true); | |
| 471 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
| 472 } | |
| 473 | |
| 474 | |
| 475 extern "C" void pp(void* p) { | |
| 476 Command c("pp"); | |
| 477 FlagSetting fl(PrintVMMessages, true); | |
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478 FlagSetting f2(DisplayVMOutput, true); |
| 0 | 479 if (Universe::heap()->is_in(p)) { |
| 480 oop obj = oop(p); | |
| 481 obj->print(); | |
| 482 } else { | |
| 4006 | 483 tty->print(PTR_FORMAT, p); |
| 0 | 484 } |
| 485 } | |
| 486 | |
| 487 | |
| 488 // pv: print vm-printable object | |
| 489 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
| 490 extern "C" void findpc(intptr_t x); | |
| 491 | |
| 4006 | 492 #endif // !PRODUCT |
| 493 | |
| 0 | 494 extern "C" void ps() { // print stack |
| 4006 | 495 if (Thread::current() == NULL) return; |
| 0 | 496 Command c("ps"); |
| 497 | |
| 498 | |
| 499 // Prints the stack of the current Java thread | |
| 500 JavaThread* p = JavaThread::active(); | |
| 501 tty->print(" for thread: "); | |
| 502 p->print(); | |
| 503 tty->cr(); | |
| 504 | |
| 505 if (p->has_last_Java_frame()) { | |
| 506 // If the last_Java_fp is set we are in C land and | |
| 507 // can call the standard stack_trace function. | |
| 4006 | 508 #ifdef PRODUCT |
| 509 p->print_stack(); | |
| 510 } else { | |
| 511 tty->print_cr("Cannot find the last Java frame, printing stack disabled."); | |
| 512 #else // !PRODUCT | |
| 0 | 513 p->trace_stack(); |
| 514 } else { | |
| 515 frame f = os::current_frame(); | |
| 516 RegisterMap reg_map(p); | |
| 517 f = f.sender(®_map); | |
| 518 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
| 519 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
| 520 pd_ps(f); | |
| 4006 | 521 #endif // PRODUCT |
| 0 | 522 } |
| 523 | |
| 524 } | |
| 525 | |
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526 extern "C" void pfl() { |
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527 // print frame layout |
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528 Command c("pfl"); |
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529 JavaThread* p = JavaThread::active(); |
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530 tty->print(" for thread: "); |
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531 p->print(); |
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532 tty->cr(); |
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533 if (p->has_last_Java_frame()) { |
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534 p->print_frame_layout(); |
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535 } |
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536 } |
| 0 | 537 |
| 4006 | 538 #ifndef PRODUCT |
| 539 | |
| 0 | 540 extern "C" void psf() { // print stack frames |
| 541 { | |
| 542 Command c("psf"); | |
| 543 JavaThread* p = JavaThread::active(); | |
| 544 tty->print(" for thread: "); | |
| 545 p->print(); | |
| 546 tty->cr(); | |
| 547 if (p->has_last_Java_frame()) { | |
| 548 p->trace_frames(); | |
| 549 } | |
| 550 } | |
| 551 } | |
| 552 | |
| 553 | |
| 554 extern "C" void threads() { | |
| 555 Command c("threads"); | |
| 556 Threads::print(false, true); | |
| 557 } | |
| 558 | |
| 559 | |
| 560 extern "C" void psd() { | |
| 561 Command c("psd"); | |
| 562 SystemDictionary::print(); | |
| 563 } | |
| 564 | |
| 565 | |
| 566 extern "C" void safepoints() { | |
| 567 Command c("safepoints"); | |
| 568 SafepointSynchronize::print_state(); | |
| 569 } | |
| 570 | |
| 4006 | 571 #endif // !PRODUCT |
| 0 | 572 |
| 573 extern "C" void pss() { // print all stacks | |
| 4006 | 574 if (Thread::current() == NULL) return; |
| 0 | 575 Command c("pss"); |
| 4006 | 576 Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
| 0 | 577 } |
| 578 | |
| 4006 | 579 #ifndef PRODUCT |
| 0 | 580 |
| 581 extern "C" void debug() { // to set things up for compiler debugging | |
| 582 Command c("debug"); | |
| 583 WizardMode = true; | |
| 584 PrintVMMessages = PrintCompilation = true; | |
| 585 PrintInlining = PrintAssembly = true; | |
| 586 tty->flush(); | |
| 587 } | |
| 588 | |
| 589 | |
| 590 extern "C" void ndebug() { // undo debug() | |
| 591 Command c("ndebug"); | |
| 592 PrintCompilation = false; | |
| 593 PrintInlining = PrintAssembly = false; | |
| 594 tty->flush(); | |
| 595 } | |
| 596 | |
| 597 | |
| 598 extern "C" void flush() { | |
| 599 Command c("flush"); | |
| 600 tty->flush(); | |
| 601 } | |
| 602 | |
| 4944 | 603 extern "C" void events() { |
| 604 Command c("events"); | |
| 605 Events::print(); | |
| 606 } | |
| 0 | 607 |
| 608 // Given a heap address that was valid before the most recent GC, if | |
| 609 // the oop that used to contain it is still live, prints the new | |
| 610 // location of the oop and the address. Useful for tracking down | |
| 611 // certain kinds of naked oop and oop map bugs. | |
| 612 extern "C" void pnl(intptr_t old_heap_addr) { | |
| 613 // Print New Location of old heap address | |
| 614 Command c("pnl"); | |
| 615 #ifndef VALIDATE_MARK_SWEEP | |
| 616 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
| 617 #else | |
| 618 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
| 619 #endif | |
| 620 } | |
| 621 | |
| 622 | |
| 623 extern "C" methodOop findm(intptr_t pc) { | |
| 624 Command c("findm"); | |
| 625 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
| 626 return (nm == NULL) ? (methodOop)NULL : nm->method(); | |
| 627 } | |
| 628 | |
| 629 | |
| 630 extern "C" nmethod* findnm(intptr_t addr) { | |
| 631 Command c("findnm"); | |
| 632 return CodeCache::find_nmethod((address)addr); | |
| 633 } | |
| 634 | |
| 635 static address same_page(address x, address y) { | |
| 636 intptr_t page_bits = -os::vm_page_size(); | |
| 637 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
| 638 return x; | |
| 639 } else if (x > y) { | |
| 640 return (address)(intptr_t(y) | ~page_bits) + 1; | |
| 641 } else { | |
| 642 return (address)(intptr_t(y) & page_bits); | |
| 643 } | |
| 644 } | |
| 645 | |
| 646 class LookForRefInGenClosure : public OopsInGenClosure { | |
| 647 public: | |
| 648 oop target; | |
| 649 void do_oop(oop* o) { | |
| 650 if (o != NULL && *o == target) { | |
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651 tty->print_cr(INTPTR_FORMAT, o); |
| 0 | 652 } |
| 653 } | |
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654 void do_oop(narrowOop* o) { ShouldNotReachHere(); } |
| 0 | 655 }; |
| 656 | |
| 657 | |
| 658 class LookForRefInObjectClosure : public ObjectClosure { | |
| 659 private: | |
| 660 LookForRefInGenClosure look_in_object; | |
| 661 public: | |
| 662 LookForRefInObjectClosure(oop target) { look_in_object.target = target; } | |
| 663 void do_object(oop obj) { | |
| 664 obj->oop_iterate(&look_in_object); | |
| 665 } | |
| 666 }; | |
| 667 | |
| 668 | |
| 669 static void findref(intptr_t x) { | |
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670 CollectedHeap *ch = Universe::heap(); |
| 0 | 671 LookForRefInGenClosure lookFor; |
| 672 lookFor.target = (oop) x; | |
| 673 LookForRefInObjectClosure look_in_object((oop) x); | |
| 674 | |
| 675 tty->print_cr("Searching heap:"); | |
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676 ch->object_iterate(&look_in_object); |
| 0 | 677 |
| 678 tty->print_cr("Searching strong roots:"); | |
| 679 Universe::oops_do(&lookFor, false); | |
| 680 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles | |
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681 Threads::oops_do(&lookFor, NULL); |
| 0 | 682 ObjectSynchronizer::oops_do(&lookFor); |
| 683 //FlatProfiler::oops_do(&lookFor); | |
| 684 SystemDictionary::oops_do(&lookFor); | |
| 685 | |
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686 tty->print_cr("Searching code cache:"); |
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687 CodeCache::oops_do(&lookFor); |
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688 |
| 0 | 689 tty->print_cr("Done."); |
| 690 } | |
| 691 | |
| 692 class FindClassObjectClosure: public ObjectClosure { | |
| 693 private: | |
| 694 const char* _target; | |
| 695 public: | |
| 696 FindClassObjectClosure(const char name[]) { _target = name; } | |
| 697 | |
| 698 virtual void do_object(oop obj) { | |
| 699 if (obj->is_klass()) { | |
| 700 Klass* k = klassOop(obj)->klass_part(); | |
| 701 if (k->name() != NULL) { | |
| 702 ResourceMark rm; | |
| 703 const char* ext = k->external_name(); | |
| 704 if ( strcmp(_target, ext) == 0 ) { | |
| 705 tty->print_cr("Found " INTPTR_FORMAT, obj); | |
| 706 obj->print(); | |
| 707 } | |
| 708 } | |
| 709 } | |
| 710 } | |
| 711 }; | |
| 712 | |
| 713 // | |
| 714 extern "C" void findclass(const char name[]) { | |
| 715 Command c("findclass"); | |
| 716 if (name != NULL) { | |
| 717 tty->print_cr("Finding class %s -> ", name); | |
| 718 FindClassObjectClosure srch(name); | |
| 719 Universe::heap()->permanent_object_iterate(&srch); | |
| 720 } | |
| 721 } | |
| 722 | |
| 723 // Another interface that isn't ambiguous in dbx. | |
| 724 // Can we someday rename the other find to hsfind? | |
| 725 extern "C" void hsfind(intptr_t x) { | |
| 726 Command c("hsfind"); | |
|
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727 os::print_location(tty, x, false); |
| 0 | 728 } |
| 729 | |
| 730 | |
| 731 extern "C" void hsfindref(intptr_t x) { | |
| 732 Command c("hsfindref"); | |
| 733 findref(x); | |
| 734 } | |
| 735 | |
| 736 extern "C" void find(intptr_t x) { | |
| 737 Command c("find"); | |
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738 os::print_location(tty, x, false); |
| 0 | 739 } |
| 740 | |
| 741 | |
| 742 extern "C" void findpc(intptr_t x) { | |
| 743 Command c("findpc"); | |
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744 os::print_location(tty, x, true); |
| 0 | 745 } |
| 746 | |
| 747 | |
| 748 // int versions of all methods to avoid having to type type casts in the debugger | |
| 749 | |
| 750 void pp(intptr_t p) { pp((void*)p); } | |
| 751 void pp(oop p) { pp((void*)p); } | |
| 752 | |
| 753 void help() { | |
| 754 Command c("help"); | |
| 755 tty->print_cr("basic"); | |
| 756 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
| 757 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
| 758 tty->print_cr(" ps() - print current thread stack"); | |
| 759 tty->print_cr(" pss() - print all thread stacks"); | |
| 760 tty->print_cr(" pm(int pc) - print methodOop given compiled PC"); | |
| 761 tty->print_cr(" findm(intptr_t pc) - finds methodOop"); | |
| 762 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); | |
| 763 | |
| 764 tty->print_cr("misc."); | |
| 765 tty->print_cr(" flush() - flushes the log file"); | |
| 4944 | 766 tty->print_cr(" events() - dump events from ring buffers"); |
| 0 | 767 |
| 768 | |
| 769 tty->print_cr("compiler debugging"); | |
| 770 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
| 771 tty->print_cr(" ndebug() - undo debug"); | |
| 772 } | |
| 773 | |
| 774 #if 0 | |
| 775 | |
| 776 // BobV's command parser for debugging on windows when nothing else works. | |
| 777 | |
| 778 enum CommandID { | |
| 779 CMDID_HELP, | |
| 780 CMDID_QUIT, | |
| 781 CMDID_HSFIND, | |
| 782 CMDID_PSS, | |
| 783 CMDID_PS, | |
| 784 CMDID_PSF, | |
| 785 CMDID_FINDM, | |
| 786 CMDID_FINDNM, | |
| 787 CMDID_PP, | |
| 788 CMDID_BPT, | |
| 789 CMDID_EXIT, | |
| 790 CMDID_VERIFY, | |
| 791 CMDID_THREADS, | |
| 792 CMDID_ILLEGAL = 99 | |
| 793 }; | |
| 794 | |
| 795 struct CommandParser { | |
| 796 char *name; | |
| 797 CommandID code; | |
| 798 char *description; | |
| 799 }; | |
| 800 | |
| 801 struct CommandParser CommandList[] = { | |
| 802 (char *)"help", CMDID_HELP, " Dump this list", | |
| 803 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
| 804 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
| 805 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
| 806 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
| 807 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
| 808 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC", | |
| 809 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", | |
| 810 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
| 811 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
| 812 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
| 813 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
| 814 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
| 815 (char *)0, CMDID_ILLEGAL | |
| 816 }; | |
| 817 | |
| 818 | |
| 819 // get_debug_command() | |
| 820 // | |
| 821 // Read a command from standard input. | |
| 822 // This is useful when you have a debugger | |
| 823 // which doesn't support calling into functions. | |
| 824 // | |
| 825 void get_debug_command() | |
| 826 { | |
| 827 ssize_t count; | |
| 828 int i,j; | |
| 829 bool gotcommand; | |
| 830 intptr_t addr; | |
| 831 char buffer[256]; | |
| 832 nmethod *nm; | |
| 833 methodOop m; | |
| 834 | |
| 835 tty->print_cr("You have entered the diagnostic command interpreter"); | |
| 836 tty->print("The supported commands are:\n"); | |
| 837 for ( i=0; ; i++ ) { | |
| 838 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
| 839 break; | |
| 840 tty->print_cr(" %s \n", CommandList[i].name ); | |
| 841 } | |
| 842 | |
| 843 while ( 1 ) { | |
| 844 gotcommand = false; | |
| 845 tty->print("Please enter a command: "); | |
| 846 count = scanf("%s", buffer) ; | |
| 847 if ( count >=0 ) { | |
| 848 for ( i=0; ; i++ ) { | |
| 849 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
| 850 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
| 851 break; | |
| 852 } | |
| 853 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
| 854 gotcommand = true; | |
| 855 switch ( CommandList[i].code ) { | |
| 856 case CMDID_PS: | |
| 857 ps(); | |
| 858 break; | |
| 859 case CMDID_PSS: | |
| 860 pss(); | |
| 861 break; | |
| 862 case CMDID_PSF: | |
| 863 psf(); | |
| 864 break; | |
| 865 case CMDID_FINDM: | |
| 866 tty->print("Please enter the hex addr to pass to findm: "); | |
| 867 scanf("%I64X", &addr); | |
| 868 m = (methodOop)findm(addr); | |
| 869 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); | |
| 870 break; | |
| 871 case CMDID_FINDNM: | |
| 872 tty->print("Please enter the hex addr to pass to findnm: "); | |
| 873 scanf("%I64X", &addr); | |
| 874 nm = (nmethod*)findnm(addr); | |
| 875 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
| 876 break; | |
| 877 case CMDID_PP: | |
| 878 tty->print("Please enter the hex addr to pass to pp: "); | |
| 879 scanf("%I64X", &addr); | |
| 880 pp((void*)addr); | |
| 881 break; | |
| 882 case CMDID_EXIT: | |
| 883 exit(0); | |
| 884 case CMDID_HELP: | |
| 885 tty->print("Here are the supported commands: "); | |
| 886 for ( j=0; ; j++ ) { | |
| 887 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
| 888 break; | |
| 889 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
| 890 CommandList[j].description ); | |
| 891 } | |
| 892 break; | |
| 893 case CMDID_QUIT: | |
| 894 return; | |
| 895 break; | |
| 896 case CMDID_BPT: | |
| 897 BREAKPOINT; | |
| 898 break; | |
| 899 case CMDID_VERIFY: | |
| 900 verify();; | |
| 901 break; | |
| 902 case CMDID_THREADS: | |
| 903 threads();; | |
| 904 break; | |
| 905 case CMDID_HSFIND: | |
| 906 tty->print("Please enter the hex addr to pass to hsfind: "); | |
| 907 scanf("%I64X", &addr); | |
| 908 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
| 909 hsfind(addr); | |
| 910 break; | |
| 911 default: | |
| 912 case CMDID_ILLEGAL: | |
| 913 break; | |
| 914 } | |
| 915 } | |
| 916 } | |
| 917 } | |
| 918 } | |
| 919 } | |
| 920 #endif | |
| 921 | |
| 4006 | 922 #endif // !PRODUCT |