Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 1870:c77b5c592eab
6392697: Additional flag needed to supress Hotspot warning messages
Summary: Apply PrintJvmWarnings flag to all warnings
Reviewed-by: coleenp, phh
| author | kamg |
|---|---|
| date | Tue, 12 Oct 2010 10:57:33 -0400 |
| parents | 30f67acf635d |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_debug.cpp.incl" | |
| 27 | |
| 28 #ifndef ASSERT | |
| 29 # ifdef _DEBUG | |
| 30 // NOTE: don't turn the lines below into a comment -- if you're getting | |
| 31 // a compile error here, change the settings to define ASSERT | |
| 32 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
| 33 functions that do not slow down the system too much and thus can be left in optimized code. | |
| 34 On the other hand, the code should not be included in a production version. | |
| 35 # endif // _DEBUG | |
| 36 #endif // ASSERT | |
| 37 | |
| 38 | |
| 39 #ifdef _DEBUG | |
| 40 # ifndef ASSERT | |
| 41 configuration error: ASSERT must be defined in debug version | |
| 42 # endif // ASSERT | |
| 43 #endif // _DEBUG | |
| 44 | |
| 45 | |
| 46 #ifdef PRODUCT | |
| 47 # if -defined _DEBUG || -defined ASSERT | |
| 48 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
| 49 # endif | |
| 50 #endif // PRODUCT | |
| 51 | |
| 52 | |
| 53 void warning(const char* format, ...) { | |
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54 if (PrintWarnings) { |
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55 // In case error happens before init or during shutdown |
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56 if (tty == NULL) ostream_init(); |
| 0 | 57 |
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58 tty->print("%s warning: ", VM_Version::vm_name()); |
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59 va_list ap; |
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60 va_start(ap, format); |
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61 tty->vprint_cr(format, ap); |
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62 va_end(ap); |
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63 } |
| 0 | 64 if (BreakAtWarning) BREAKPOINT; |
| 65 } | |
| 66 | |
| 67 #ifndef PRODUCT | |
| 68 | |
| 69 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
| 70 | |
| 71 static const char* last_file_name = NULL; | |
| 72 static int last_line_no = -1; | |
| 73 | |
| 74 // assert/guarantee/... may happen very early during VM initialization. | |
| 75 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
| 76 // example, don't use tty. | |
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77 bool error_is_suppressed(const char* file_name, int line_no) { |
| 0 | 78 // The following 1-element cache requires that passed-in |
| 79 // file names are always only constant literals. | |
| 80 if (file_name == last_file_name && line_no == last_line_no) return true; | |
| 81 | |
| 82 int file_name_len = (int)strlen(file_name); | |
| 83 char separator = os::file_separator()[0]; | |
| 84 const char* base_name = strrchr(file_name, separator); | |
| 85 if (base_name == NULL) | |
| 86 base_name = file_name; | |
| 87 | |
| 88 // scan the SuppressErrorAt option | |
| 89 const char* cp = SuppressErrorAt; | |
| 90 for (;;) { | |
| 91 const char* sfile; | |
| 92 int sfile_len; | |
| 93 int sline; | |
| 94 bool noisy; | |
| 95 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
| 96 if ((*cp) == '\0') break; | |
| 97 sfile = cp; | |
| 98 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
| 99 sfile_len = cp - sfile; | |
| 100 if ((*cp) == ':') cp++; | |
| 101 sline = 0; | |
| 102 while ((*cp) != '\0' && isdigit(*cp)) { | |
| 103 sline *= 10; | |
| 104 sline += (*cp) - '0'; | |
| 105 cp++; | |
| 106 } | |
| 107 // "file:line!" means the assert suppression is not silent | |
| 108 noisy = ((*cp) == '!'); | |
| 109 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
| 110 // match the line | |
| 111 if (sline != 0) { | |
| 112 if (sline != line_no) continue; | |
| 113 } | |
| 114 // match the file | |
| 115 if (sfile_len > 0) { | |
| 116 const char* look = file_name; | |
| 117 const char* look_max = file_name + file_name_len - sfile_len; | |
| 118 const char* foundp; | |
| 119 bool match = false; | |
| 120 while (!match | |
| 121 && (foundp = strchr(look, sfile[0])) != NULL | |
| 122 && foundp <= look_max) { | |
| 123 match = true; | |
| 124 for (int i = 1; i < sfile_len; i++) { | |
| 125 if (sfile[i] != foundp[i]) { | |
| 126 match = false; | |
| 127 break; | |
| 128 } | |
| 129 } | |
| 130 look = foundp + 1; | |
| 131 } | |
| 132 if (!match) continue; | |
| 133 } | |
| 134 // got a match! | |
| 135 if (noisy) { | |
| 136 fdStream out(defaultStream::output_fd()); | |
| 137 out.print_raw("[error suppressed at "); | |
| 138 out.print_raw(base_name); | |
| 139 char buf[16]; | |
| 140 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
| 141 out.print_raw_cr(buf); | |
| 142 } else { | |
| 143 // update 1-element cache for fast silent matches | |
| 144 last_file_name = file_name; | |
| 145 last_line_no = line_no; | |
| 146 } | |
| 147 return true; | |
| 148 } | |
| 149 | |
| 150 if (!is_error_reported()) { | |
| 151 // print a friendly hint: | |
| 152 fdStream out(defaultStream::output_fd()); | |
| 153 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
| 154 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
| 155 out.print_raw (base_name); | |
| 156 char buf[16]; | |
| 157 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
| 158 out.print_raw_cr(buf); | |
| 159 } | |
| 160 return false; | |
| 161 } | |
| 162 | |
| 163 #undef is_token_break | |
| 164 | |
| 165 #else | |
| 166 | |
| 167 // Place-holder for non-existent suppression check: | |
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168 #define error_is_suppressed(file_name, line_no) (false) |
| 0 | 169 |
| 170 #endif //PRODUCT | |
| 171 | |
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172 void report_vm_error(const char* file, int line, const char* error_msg, |
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173 const char* detail_msg) |
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174 { |
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175 if (Debugging || error_is_suppressed(file, line)) return; |
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176 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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177 VMError err(thread, file, line, error_msg, detail_msg); |
| 0 | 178 err.report_and_die(); |
| 179 } | |
| 180 | |
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181 void report_fatal(const char* file, int line, const char* message) |
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182 { |
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183 report_vm_error(file, line, "fatal error", message); |
| 0 | 184 } |
| 185 | |
| 186 // Used by report_vm_out_of_memory to detect recursion. | |
| 187 static jint _exiting_out_of_mem = 0; | |
| 188 | |
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189 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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190 const char* message) { |
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191 if (Debugging || error_is_suppressed(file, line)) return; |
| 0 | 192 |
| 193 // We try to gather additional information for the first out of memory | |
| 194 // error only; gathering additional data might cause an allocation and a | |
| 195 // recursive out_of_memory condition. | |
| 196 | |
| 197 const jint exiting = 1; | |
| 198 // If we succeed in changing the value, we're the first one in. | |
| 199 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
| 200 | |
| 201 if (first_time_here) { | |
| 202 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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203 VMError(thread, file, line, size, message).report_and_die(); |
| 0 | 204 } |
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205 |
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206 // Dump core and abort |
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207 vm_abort(true); |
| 0 | 208 } |
| 209 | |
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210 void report_should_not_call(const char* file, int line) { |
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211 report_vm_error(file, line, "ShouldNotCall()"); |
| 0 | 212 } |
| 213 | |
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214 void report_should_not_reach_here(const char* file, int line) { |
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215 report_vm_error(file, line, "ShouldNotReachHere()"); |
| 0 | 216 } |
| 217 | |
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218 void report_unimplemented(const char* file, int line) { |
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219 report_vm_error(file, line, "Unimplemented()"); |
| 0 | 220 } |
| 221 | |
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222 void report_untested(const char* file, int line, const char* message) { |
| 0 | 223 #ifndef PRODUCT |
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224 warning("Untested: %s in %s: %d\n", message, file, line); |
| 0 | 225 #endif // PRODUCT |
| 226 } | |
| 227 | |
| 228 void report_java_out_of_memory(const char* message) { | |
| 229 static jint out_of_memory_reported = 0; | |
| 230 | |
| 231 // A number of threads may attempt to report OutOfMemoryError at around the | |
| 232 // same time. To avoid dumping the heap or executing the data collection | |
| 233 // commands multiple times we just do it once when the first threads reports | |
| 234 // the error. | |
| 235 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
| 236 // create heap dump before OnOutOfMemoryError commands are executed | |
| 237 if (HeapDumpOnOutOfMemoryError) { | |
| 238 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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239 HeapDumper::dump_heap_from_oome(); |
| 0 | 240 } |
| 241 | |
| 242 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
| 243 VMError err(message); | |
| 244 err.report_java_out_of_memory(); | |
| 245 } | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 | |
| 250 extern "C" void ps(); | |
| 251 | |
| 252 static bool error_reported = false; | |
| 253 | |
| 254 // call this when the VM is dying--it might loosen some asserts | |
| 255 void set_error_reported() { | |
| 256 error_reported = true; | |
| 257 } | |
| 258 | |
| 259 bool is_error_reported() { | |
| 260 return error_reported; | |
| 261 } | |
| 262 | |
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263 #ifndef PRODUCT |
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264 #include <signal.h> |
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265 |
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266 void test_error_handler(size_t test_num) |
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267 { |
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268 if (test_num == 0) return; |
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269 |
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270 // If asserts are disabled, use the corresponding guarantee instead. |
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271 size_t n = test_num; |
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272 NOT_DEBUG(if (n <= 2) n += 2); |
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273 |
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274 const char* const str = "hello"; |
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275 const size_t num = (size_t)os::vm_page_size(); |
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276 |
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277 const char* const eol = os::line_separator(); |
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278 const char* const msg = "this message should be truncated during formatting"; |
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279 |
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280 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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281 switch (n) { |
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282 case 1: assert(str == NULL, "expected null"); |
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283 case 2: assert(num == 1023 && *str == 'X', |
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284 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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285 case 3: guarantee(str == NULL, "expected null"); |
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286 case 4: guarantee(num == 1023 && *str == 'X', |
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287 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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288 case 5: fatal("expected null"); |
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289 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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290 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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291 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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292 "%s%s# %s%s# %s%s# %s%s# %s", |
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293 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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294 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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295 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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296 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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297 case 9: ShouldNotCallThis(); |
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298 case 10: ShouldNotReachHere(); |
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299 case 11: Unimplemented(); |
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300 // This is last because it does not generate an hs_err* file on Windows. |
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301 case 12: os::signal_raise(SIGSEGV); |
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302 |
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303 default: ShouldNotReachHere(); |
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304 } |
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305 } |
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306 #endif // #ifndef PRODUCT |
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307 |
| 0 | 308 // ------ helper functions for debugging go here ------------ |
| 309 | |
| 310 #ifndef PRODUCT | |
| 311 // All debug entries should be wrapped with a stack allocated | |
| 312 // Command object. It makes sure a resource mark is set and | |
| 313 // flushes the logfile to prevent file sharing problems. | |
| 314 | |
| 315 class Command : public StackObj { | |
| 316 private: | |
| 317 ResourceMark rm; | |
| 318 ResetNoHandleMark rnhm; | |
| 319 HandleMark hm; | |
| 320 bool debug_save; | |
| 321 public: | |
| 322 static int level; | |
| 323 Command(const char* str) { | |
| 324 debug_save = Debugging; | |
| 325 Debugging = true; | |
| 326 if (level++ > 0) return; | |
| 327 tty->cr(); | |
| 328 tty->print_cr("\"Executing %s\"", str); | |
| 329 } | |
| 330 | |
| 331 ~Command() { tty->flush(); Debugging = debug_save; level--; } | |
| 332 }; | |
| 333 | |
| 334 int Command::level = 0; | |
| 335 | |
| 336 extern "C" void blob(CodeBlob* cb) { | |
| 337 Command c("blob"); | |
| 338 cb->print(); | |
| 339 } | |
| 340 | |
| 341 | |
| 342 extern "C" void dump_vtable(address p) { | |
| 343 Command c("dump_vtable"); | |
| 344 klassOop k = (klassOop)p; | |
| 345 instanceKlass::cast(k)->vtable()->print(); | |
| 346 } | |
| 347 | |
| 348 | |
| 349 extern "C" void nm(intptr_t p) { | |
| 350 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
| 351 Command c("nm"); | |
| 352 CodeBlob* cb = CodeCache::find_blob((address)p); | |
| 353 if (cb == NULL) { | |
| 354 tty->print_cr("NULL"); | |
| 355 } else { | |
| 356 cb->print(); | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 | |
| 361 extern "C" void disnm(intptr_t p) { | |
| 362 Command c("disnm"); | |
| 363 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 364 cb->print(); | |
| 365 Disassembler::decode(cb); | |
| 366 } | |
| 367 | |
| 368 | |
| 369 extern "C" void printnm(intptr_t p) { | |
| 370 char buffer[256]; | |
| 371 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
| 372 Command c(buffer); | |
| 373 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 374 if (cb->is_nmethod()) { | |
| 375 nmethod* nm = (nmethod*)cb; | |
| 376 nm->print_nmethod(true); | |
| 377 } | |
| 378 } | |
| 379 | |
| 380 | |
| 381 extern "C" void universe() { | |
| 382 Command c("universe"); | |
| 383 Universe::print(); | |
| 384 } | |
| 385 | |
| 386 | |
| 387 extern "C" void verify() { | |
| 388 // try to run a verify on the entire system | |
| 389 // note: this may not be safe if we're not at a safepoint; for debugging, | |
| 390 // this manipulates the safepoint settings to avoid assertion failures | |
| 391 Command c("universe verify"); | |
| 392 bool safe = SafepointSynchronize::is_at_safepoint(); | |
| 393 if (!safe) { | |
| 394 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
| 395 SafepointSynchronize::set_is_at_safepoint(); | |
| 396 } | |
| 397 // Ensure Eden top is correct before verification | |
| 398 Universe::heap()->prepare_for_verify(); | |
| 399 Universe::verify(true); | |
| 400 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
| 401 } | |
| 402 | |
| 403 | |
| 404 extern "C" void pp(void* p) { | |
| 405 Command c("pp"); | |
| 406 FlagSetting fl(PrintVMMessages, true); | |
| 407 if (Universe::heap()->is_in(p)) { | |
| 408 oop obj = oop(p); | |
| 409 obj->print(); | |
| 410 } else { | |
| 411 tty->print("%#p", p); | |
| 412 } | |
| 413 } | |
| 414 | |
| 415 | |
| 416 // pv: print vm-printable object | |
| 417 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
| 418 extern "C" void findpc(intptr_t x); | |
| 419 | |
| 420 extern "C" void ps() { // print stack | |
| 421 Command c("ps"); | |
| 422 | |
| 423 | |
| 424 // Prints the stack of the current Java thread | |
| 425 JavaThread* p = JavaThread::active(); | |
| 426 tty->print(" for thread: "); | |
| 427 p->print(); | |
| 428 tty->cr(); | |
| 429 | |
| 430 if (p->has_last_Java_frame()) { | |
| 431 // If the last_Java_fp is set we are in C land and | |
| 432 // can call the standard stack_trace function. | |
| 433 p->trace_stack(); | |
| 434 } else { | |
| 435 frame f = os::current_frame(); | |
| 436 RegisterMap reg_map(p); | |
| 437 f = f.sender(®_map); | |
| 438 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
| 439 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
| 440 pd_ps(f); | |
| 441 } | |
| 442 | |
| 443 } | |
| 444 | |
| 445 | |
| 446 extern "C" void psf() { // print stack frames | |
| 447 { | |
| 448 Command c("psf"); | |
| 449 JavaThread* p = JavaThread::active(); | |
| 450 tty->print(" for thread: "); | |
| 451 p->print(); | |
| 452 tty->cr(); | |
| 453 if (p->has_last_Java_frame()) { | |
| 454 p->trace_frames(); | |
| 455 } | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 | |
| 460 extern "C" void threads() { | |
| 461 Command c("threads"); | |
| 462 Threads::print(false, true); | |
| 463 } | |
| 464 | |
| 465 | |
| 466 extern "C" void psd() { | |
| 467 Command c("psd"); | |
| 468 SystemDictionary::print(); | |
| 469 } | |
| 470 | |
| 471 | |
| 472 extern "C" void safepoints() { | |
| 473 Command c("safepoints"); | |
| 474 SafepointSynchronize::print_state(); | |
| 475 } | |
| 476 | |
| 477 | |
| 478 extern "C" void pss() { // print all stacks | |
| 479 Command c("pss"); | |
| 480 Threads::print(true, true); | |
| 481 } | |
| 482 | |
| 483 | |
| 484 extern "C" void debug() { // to set things up for compiler debugging | |
| 485 Command c("debug"); | |
| 486 WizardMode = true; | |
| 487 PrintVMMessages = PrintCompilation = true; | |
| 488 PrintInlining = PrintAssembly = true; | |
| 489 tty->flush(); | |
| 490 } | |
| 491 | |
| 492 | |
| 493 extern "C" void ndebug() { // undo debug() | |
| 494 Command c("ndebug"); | |
| 495 PrintCompilation = false; | |
| 496 PrintInlining = PrintAssembly = false; | |
| 497 tty->flush(); | |
| 498 } | |
| 499 | |
| 500 | |
| 501 extern "C" void flush() { | |
| 502 Command c("flush"); | |
| 503 tty->flush(); | |
| 504 } | |
| 505 | |
| 506 | |
| 507 extern "C" void events() { | |
| 508 Command c("events"); | |
| 509 Events::print_last(tty, 50); | |
| 510 } | |
| 511 | |
| 512 | |
| 513 extern "C" void nevents(int n) { | |
| 514 Command c("events"); | |
| 515 Events::print_last(tty, n); | |
| 516 } | |
| 517 | |
| 518 | |
| 519 // Given a heap address that was valid before the most recent GC, if | |
| 520 // the oop that used to contain it is still live, prints the new | |
| 521 // location of the oop and the address. Useful for tracking down | |
| 522 // certain kinds of naked oop and oop map bugs. | |
| 523 extern "C" void pnl(intptr_t old_heap_addr) { | |
| 524 // Print New Location of old heap address | |
| 525 Command c("pnl"); | |
| 526 #ifndef VALIDATE_MARK_SWEEP | |
| 527 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
| 528 #else | |
| 529 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
| 530 #endif | |
| 531 } | |
| 532 | |
| 533 | |
| 534 extern "C" methodOop findm(intptr_t pc) { | |
| 535 Command c("findm"); | |
| 536 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
| 537 return (nm == NULL) ? (methodOop)NULL : nm->method(); | |
| 538 } | |
| 539 | |
| 540 | |
| 541 extern "C" nmethod* findnm(intptr_t addr) { | |
| 542 Command c("findnm"); | |
| 543 return CodeCache::find_nmethod((address)addr); | |
| 544 } | |
| 545 | |
| 546 static address same_page(address x, address y) { | |
| 547 intptr_t page_bits = -os::vm_page_size(); | |
| 548 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
| 549 return x; | |
| 550 } else if (x > y) { | |
| 551 return (address)(intptr_t(y) | ~page_bits) + 1; | |
| 552 } else { | |
| 553 return (address)(intptr_t(y) & page_bits); | |
| 554 } | |
| 555 } | |
| 556 | |
| 557 class LookForRefInGenClosure : public OopsInGenClosure { | |
| 558 public: | |
| 559 oop target; | |
| 560 void do_oop(oop* o) { | |
| 561 if (o != NULL && *o == target) { | |
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562 tty->print_cr(INTPTR_FORMAT, o); |
| 0 | 563 } |
| 564 } | |
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565 void do_oop(narrowOop* o) { ShouldNotReachHere(); } |
| 0 | 566 }; |
| 567 | |
| 568 | |
| 569 class LookForRefInObjectClosure : public ObjectClosure { | |
| 570 private: | |
| 571 LookForRefInGenClosure look_in_object; | |
| 572 public: | |
| 573 LookForRefInObjectClosure(oop target) { look_in_object.target = target; } | |
| 574 void do_object(oop obj) { | |
| 575 obj->oop_iterate(&look_in_object); | |
| 576 } | |
| 577 }; | |
| 578 | |
| 579 | |
| 580 static void findref(intptr_t x) { | |
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581 CollectedHeap *ch = Universe::heap(); |
| 0 | 582 LookForRefInGenClosure lookFor; |
| 583 lookFor.target = (oop) x; | |
| 584 LookForRefInObjectClosure look_in_object((oop) x); | |
| 585 | |
| 586 tty->print_cr("Searching heap:"); | |
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587 ch->object_iterate(&look_in_object); |
| 0 | 588 |
| 589 tty->print_cr("Searching strong roots:"); | |
| 590 Universe::oops_do(&lookFor, false); | |
| 591 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles | |
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592 Threads::oops_do(&lookFor, NULL); |
| 0 | 593 ObjectSynchronizer::oops_do(&lookFor); |
| 594 //FlatProfiler::oops_do(&lookFor); | |
| 595 SystemDictionary::oops_do(&lookFor); | |
| 596 | |
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597 tty->print_cr("Searching code cache:"); |
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598 CodeCache::oops_do(&lookFor); |
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599 |
| 0 | 600 tty->print_cr("Done."); |
| 601 } | |
| 602 | |
| 603 class FindClassObjectClosure: public ObjectClosure { | |
| 604 private: | |
| 605 const char* _target; | |
| 606 public: | |
| 607 FindClassObjectClosure(const char name[]) { _target = name; } | |
| 608 | |
| 609 virtual void do_object(oop obj) { | |
| 610 if (obj->is_klass()) { | |
| 611 Klass* k = klassOop(obj)->klass_part(); | |
| 612 if (k->name() != NULL) { | |
| 613 ResourceMark rm; | |
| 614 const char* ext = k->external_name(); | |
| 615 if ( strcmp(_target, ext) == 0 ) { | |
| 616 tty->print_cr("Found " INTPTR_FORMAT, obj); | |
| 617 obj->print(); | |
| 618 } | |
| 619 } | |
| 620 } | |
| 621 } | |
| 622 }; | |
| 623 | |
| 624 // | |
| 625 extern "C" void findclass(const char name[]) { | |
| 626 Command c("findclass"); | |
| 627 if (name != NULL) { | |
| 628 tty->print_cr("Finding class %s -> ", name); | |
| 629 FindClassObjectClosure srch(name); | |
| 630 Universe::heap()->permanent_object_iterate(&srch); | |
| 631 } | |
| 632 } | |
| 633 | |
| 634 // Another interface that isn't ambiguous in dbx. | |
| 635 // Can we someday rename the other find to hsfind? | |
| 636 extern "C" void hsfind(intptr_t x) { | |
| 637 Command c("hsfind"); | |
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638 os::print_location(tty, x, false); |
| 0 | 639 } |
| 640 | |
| 641 | |
| 642 extern "C" void hsfindref(intptr_t x) { | |
| 643 Command c("hsfindref"); | |
| 644 findref(x); | |
| 645 } | |
| 646 | |
| 647 extern "C" void find(intptr_t x) { | |
| 648 Command c("find"); | |
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649 os::print_location(tty, x, false); |
| 0 | 650 } |
| 651 | |
| 652 | |
| 653 extern "C" void findpc(intptr_t x) { | |
| 654 Command c("findpc"); | |
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655 os::print_location(tty, x, true); |
| 0 | 656 } |
| 657 | |
| 658 | |
| 659 // int versions of all methods to avoid having to type type casts in the debugger | |
| 660 | |
| 661 void pp(intptr_t p) { pp((void*)p); } | |
| 662 void pp(oop p) { pp((void*)p); } | |
| 663 | |
| 664 void help() { | |
| 665 Command c("help"); | |
| 666 tty->print_cr("basic"); | |
| 667 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
| 668 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
| 669 tty->print_cr(" ps() - print current thread stack"); | |
| 670 tty->print_cr(" pss() - print all thread stacks"); | |
| 671 tty->print_cr(" pm(int pc) - print methodOop given compiled PC"); | |
| 672 tty->print_cr(" findm(intptr_t pc) - finds methodOop"); | |
| 673 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); | |
| 674 | |
| 675 tty->print_cr("misc."); | |
| 676 tty->print_cr(" flush() - flushes the log file"); | |
| 677 tty->print_cr(" events() - dump last 50 events"); | |
| 678 | |
| 679 | |
| 680 tty->print_cr("compiler debugging"); | |
| 681 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
| 682 tty->print_cr(" ndebug() - undo debug"); | |
| 683 } | |
| 684 | |
| 685 #if 0 | |
| 686 | |
| 687 // BobV's command parser for debugging on windows when nothing else works. | |
| 688 | |
| 689 enum CommandID { | |
| 690 CMDID_HELP, | |
| 691 CMDID_QUIT, | |
| 692 CMDID_HSFIND, | |
| 693 CMDID_PSS, | |
| 694 CMDID_PS, | |
| 695 CMDID_PSF, | |
| 696 CMDID_FINDM, | |
| 697 CMDID_FINDNM, | |
| 698 CMDID_PP, | |
| 699 CMDID_BPT, | |
| 700 CMDID_EXIT, | |
| 701 CMDID_VERIFY, | |
| 702 CMDID_THREADS, | |
| 703 CMDID_ILLEGAL = 99 | |
| 704 }; | |
| 705 | |
| 706 struct CommandParser { | |
| 707 char *name; | |
| 708 CommandID code; | |
| 709 char *description; | |
| 710 }; | |
| 711 | |
| 712 struct CommandParser CommandList[] = { | |
| 713 (char *)"help", CMDID_HELP, " Dump this list", | |
| 714 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
| 715 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
| 716 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
| 717 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
| 718 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
| 719 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC", | |
| 720 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", | |
| 721 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
| 722 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
| 723 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
| 724 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
| 725 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
| 726 (char *)0, CMDID_ILLEGAL | |
| 727 }; | |
| 728 | |
| 729 | |
| 730 // get_debug_command() | |
| 731 // | |
| 732 // Read a command from standard input. | |
| 733 // This is useful when you have a debugger | |
| 734 // which doesn't support calling into functions. | |
| 735 // | |
| 736 void get_debug_command() | |
| 737 { | |
| 738 ssize_t count; | |
| 739 int i,j; | |
| 740 bool gotcommand; | |
| 741 intptr_t addr; | |
| 742 char buffer[256]; | |
| 743 nmethod *nm; | |
| 744 methodOop m; | |
| 745 | |
| 746 tty->print_cr("You have entered the diagnostic command interpreter"); | |
| 747 tty->print("The supported commands are:\n"); | |
| 748 for ( i=0; ; i++ ) { | |
| 749 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
| 750 break; | |
| 751 tty->print_cr(" %s \n", CommandList[i].name ); | |
| 752 } | |
| 753 | |
| 754 while ( 1 ) { | |
| 755 gotcommand = false; | |
| 756 tty->print("Please enter a command: "); | |
| 757 count = scanf("%s", buffer) ; | |
| 758 if ( count >=0 ) { | |
| 759 for ( i=0; ; i++ ) { | |
| 760 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
| 761 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
| 762 break; | |
| 763 } | |
| 764 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
| 765 gotcommand = true; | |
| 766 switch ( CommandList[i].code ) { | |
| 767 case CMDID_PS: | |
| 768 ps(); | |
| 769 break; | |
| 770 case CMDID_PSS: | |
| 771 pss(); | |
| 772 break; | |
| 773 case CMDID_PSF: | |
| 774 psf(); | |
| 775 break; | |
| 776 case CMDID_FINDM: | |
| 777 tty->print("Please enter the hex addr to pass to findm: "); | |
| 778 scanf("%I64X", &addr); | |
| 779 m = (methodOop)findm(addr); | |
| 780 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); | |
| 781 break; | |
| 782 case CMDID_FINDNM: | |
| 783 tty->print("Please enter the hex addr to pass to findnm: "); | |
| 784 scanf("%I64X", &addr); | |
| 785 nm = (nmethod*)findnm(addr); | |
| 786 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
| 787 break; | |
| 788 case CMDID_PP: | |
| 789 tty->print("Please enter the hex addr to pass to pp: "); | |
| 790 scanf("%I64X", &addr); | |
| 791 pp((void*)addr); | |
| 792 break; | |
| 793 case CMDID_EXIT: | |
| 794 exit(0); | |
| 795 case CMDID_HELP: | |
| 796 tty->print("Here are the supported commands: "); | |
| 797 for ( j=0; ; j++ ) { | |
| 798 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
| 799 break; | |
| 800 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
| 801 CommandList[j].description ); | |
| 802 } | |
| 803 break; | |
| 804 case CMDID_QUIT: | |
| 805 return; | |
| 806 break; | |
| 807 case CMDID_BPT: | |
| 808 BREAKPOINT; | |
| 809 break; | |
| 810 case CMDID_VERIFY: | |
| 811 verify();; | |
| 812 break; | |
| 813 case CMDID_THREADS: | |
| 814 threads();; | |
| 815 break; | |
| 816 case CMDID_HSFIND: | |
| 817 tty->print("Please enter the hex addr to pass to hsfind: "); | |
| 818 scanf("%I64X", &addr); | |
| 819 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
| 820 hsfind(addr); | |
| 821 break; | |
| 822 default: | |
| 823 case CMDID_ILLEGAL: | |
| 824 break; | |
| 825 } | |
| 826 } | |
| 827 } | |
| 828 } | |
| 829 } | |
| 830 } | |
| 831 #endif | |
| 832 | |
| 833 #endif // PRODUCT |