1 /* 2 Code to handle PETSc starting up in debuggers,etc. 3 */ 4 5 #include <petscsys.h> /*I "petscsys.h" I*/ 6 #include <signal.h> 7 #if defined(PETSC_HAVE_UNISTD_H) 8 #include <unistd.h> 9 #endif 10 11 /* 12 These are the debugger and display used if the debugger is started up 13 */ 14 static char PetscDebugger[PETSC_MAX_PATH_LEN]; 15 static char DebugTerminal[PETSC_MAX_PATH_LEN]; 16 static PetscBool UseDebugTerminal = PETSC_TRUE; 17 PetscBool petscwaitonerrorflg = PETSC_FALSE; 18 PetscBool petscindebugger = PETSC_FALSE; 19 20 /*@C 21 PetscSetDebugTerminal - Sets the terminal to use for debugging. 22 23 Not Collective 24 25 Input Parameter: 26 . terminal - name of terminal and any flags required to execute a program. 27 For example xterm, "urxvt -e", "gnome-terminal -x". 28 On Apple MacOS you can use Terminal (note the capital T) 29 30 Options Database Key: 31 -debug_terminal terminal - use this terminal instead of the default 32 33 Level: developer 34 35 Notes: 36 You can start the debugger for all processes in the same GNU screen session. 37 38 mpiexec -n 4 ./myapp -start_in_debugger -debug_terminal "screen -X -S debug screen" 39 40 will open 4 windows in the session named "debug". 41 42 The default on Apple is Terminal, on other systems the default is xterm 43 44 Fortran Note: 45 This routine is not supported in Fortran. 46 47 .seealso: `PetscSetDebugger()` 48 @*/ 49 PetscErrorCode PetscSetDebugTerminal(const char terminal[]) 50 { 51 PetscBool xterm; 52 53 PetscFunctionBegin; 54 PetscCall(PetscStrncpy(DebugTerminal, terminal, sizeof(DebugTerminal))); 55 PetscCall(PetscStrcmp(terminal, "xterm", &xterm)); 56 if (xterm) PetscCall(PetscStrlcat(DebugTerminal, " -e", sizeof(DebugTerminal))); 57 PetscFunctionReturn(0); 58 } 59 60 /*@C 61 PetscSetDebugger - Sets options associated with the debugger. 62 63 Not Collective 64 65 Input Parameters: 66 + debugger - name of debugger, which should be in your path, 67 usually "lldb", "dbx", "gdb", "cuda-gdb", "idb", "xxgdb", "kdgb" or "ddd". Also, HP-UX 68 supports "xdb", and IBM rs6000 supports "xldb". 69 70 - usedebugterminal - flag to indicate debugger window, set to either PETSC_TRUE (to indicate 71 debugger should be started in a new terminal window) or PETSC_FALSE (to start debugger 72 in initial window (the option PETSC_FALSE makes no sense when using more 73 than one MPI process.) 74 75 Level: developer 76 77 Fortran Note: 78 This routine is not supported in Fortran. 79 80 .seealso: `PetscAttachDebugger()`, `PetscAttachDebuggerErrorHandler()`, `PetscSetDebugTerminal()` 81 @*/ 82 PetscErrorCode PetscSetDebugger(const char debugger[], PetscBool usedebugterminal) 83 { 84 PetscFunctionBegin; 85 if (debugger) PetscCall(PetscStrncpy(PetscDebugger, debugger, sizeof(PetscDebugger))); 86 if (UseDebugTerminal) UseDebugTerminal = usedebugterminal; 87 PetscFunctionReturn(0); 88 } 89 90 /*@C 91 PetscSetDefaultDebugger - Causes PETSc to use its default debugger and output terminal 92 93 Not collective 94 95 Level: developer 96 97 .seealso: `PetscSetDebugger()`, `PetscSetDebuggerFromString()` 98 @*/ 99 PetscErrorCode PetscSetDefaultDebugger(void) 100 { 101 PetscFunctionBegin; 102 #if defined(PETSC_USE_DEBUGGER) 103 PetscCall(PetscSetDebugger(PETSC_USE_DEBUGGER, PETSC_TRUE)); 104 #endif 105 #if defined(__APPLE__) 106 PetscCall(PetscSetDebugTerminal("Terminal")); 107 #else 108 PetscCall(PetscSetDebugTerminal("xterm")); 109 #endif 110 PetscFunctionReturn(0); 111 } 112 113 static PetscErrorCode PetscCheckDebugger_Private(const char defaultDbg[], const char string[], const char *debugger[]) 114 { 115 PetscBool exists; 116 char *f; 117 118 PetscFunctionBegin; 119 PetscCall(PetscStrstr(string, defaultDbg, &f)); 120 if (f) { 121 PetscCall(PetscTestFile(string, 'x', &exists)); 122 if (exists) *debugger = string; 123 else *debugger = defaultDbg; 124 } 125 PetscFunctionReturn(0); 126 } 127 128 /*@C 129 PetscSetDebuggerFromString - Set the complete path for the 130 debugger for PETSc to use. 131 132 Not collective 133 134 Level: developer 135 136 .seealso: `PetscSetDebugger()`, `PetscSetDefaultDebugger()` 137 @*/ 138 PetscErrorCode PetscSetDebuggerFromString(const char *string) 139 { 140 const char *debugger = NULL; 141 PetscBool useterminal = PETSC_TRUE; 142 char *f; 143 144 PetscFunctionBegin; 145 PetscCall(PetscStrstr(string, "noxterm", &f)); 146 if (f) useterminal = PETSC_FALSE; 147 PetscCall(PetscStrstr(string, "ddd", &f)); 148 if (f) useterminal = PETSC_FALSE; 149 PetscCall(PetscStrstr(string, "noterminal", &f)); 150 if (f) useterminal = PETSC_FALSE; 151 PetscCall(PetscCheckDebugger_Private("xdb", string, &debugger)); 152 PetscCall(PetscCheckDebugger_Private("dbx", string, &debugger)); 153 PetscCall(PetscCheckDebugger_Private("xldb", string, &debugger)); 154 PetscCall(PetscCheckDebugger_Private("gdb", string, &debugger)); 155 PetscCall(PetscCheckDebugger_Private("cuda-gdb", string, &debugger)); 156 PetscCall(PetscCheckDebugger_Private("idb", string, &debugger)); 157 PetscCall(PetscCheckDebugger_Private("xxgdb", string, &debugger)); 158 PetscCall(PetscCheckDebugger_Private("ddd", string, &debugger)); 159 PetscCall(PetscCheckDebugger_Private("kdbg", string, &debugger)); 160 PetscCall(PetscCheckDebugger_Private("ups", string, &debugger)); 161 PetscCall(PetscCheckDebugger_Private("workshop", string, &debugger)); 162 PetscCall(PetscCheckDebugger_Private("pgdbg", string, &debugger)); 163 PetscCall(PetscCheckDebugger_Private("pathdb", string, &debugger)); 164 PetscCall(PetscCheckDebugger_Private("lldb", string, &debugger)); 165 PetscCall(PetscSetDebugger(debugger, useterminal)); 166 PetscFunctionReturn(0); 167 } 168 169 /*@ 170 PetscWaitOnError - If an error is detected and the process would normally exit the main program with `MPI_Abort()` sleep instead 171 of exiting. 172 173 Not Collective 174 175 Level: advanced 176 177 Note: 178 When -start_in_debugger -debugger_ranks x,y,z is used this prevents the processes NOT listed in x,y,z from calling MPI_Abort and 179 killing the user's debugging sessions. 180 181 .seealso: `PetscSetDebugger()`, `PetscAttachDebugger()` 182 @*/ 183 PetscErrorCode PetscWaitOnError(void) 184 { 185 petscwaitonerrorflg = PETSC_TRUE; 186 return 0; 187 } 188 189 /*@ 190 PetscAttachDebugger - Attaches the debugger to the running process. 191 192 Not Collective 193 194 Options Database Keys: 195 - -start_in_debugger [noxterm,dbx,xxgdb,xdb,xldb,gdb] [-display name] [-debugger_ranks m,n] -debug_terminal xterm or Terminal (for Apple) 196 . -on_error_attach_debugger [noxterm,dbx,xxgdb,xdb,xldb,gdb] [-display name] - Activates debugger attachment 197 198 Level: advanced 199 200 Developer Note: 201 Since this can be called by the error handler should it be calling `SETERRQ()` and `PetscCall()`? 202 203 .seealso: `PetscSetDebugger()`, `PetscSetDefaultDebugger()`, `PetscSetDebugTerminal()`, `PetscAttachDebuggerErrorHandler()`, `PetscStopForDebugger()` 204 @*/ 205 PetscErrorCode PetscAttachDebugger(void) 206 { 207 #if !defined(PETSC_CANNOT_START_DEBUGGER) && defined(PETSC_HAVE_FORK) 208 int child = 0; 209 PetscReal sleeptime = 0; 210 char program[PETSC_MAX_PATH_LEN], display[256], hostname[64]; 211 #endif 212 213 #if defined(PETSC_CANNOT_START_DEBUGGER) || !defined(PETSC_HAVE_FORK) 214 (*PetscErrorPrintf)("System cannot start debugger\n"); 215 (*PetscErrorPrintf)("On Cray run program in Totalview debugger\n"); 216 (*PetscErrorPrintf)("On Windows use Developer Studio(MSDEV)\n"); 217 PETSCABORT(PETSC_COMM_WORLD, PETSC_ERR_SUP_SYS); 218 #else 219 if (PetscUnlikely(PetscGetDisplay(display, sizeof(display)))) { 220 (*PetscErrorPrintf)("Cannot determine display\n"); 221 return PETSC_ERR_SYS; 222 } 223 if (PetscUnlikely(PetscGetProgramName(program, sizeof(program)))) { 224 (*PetscErrorPrintf)("Cannot determine program name needed to attach debugger\n"); 225 return PETSC_ERR_SYS; 226 } 227 if (PetscUnlikely(!program[0])) { 228 (*PetscErrorPrintf)("Cannot determine program name needed to attach debugger\n"); 229 return PETSC_ERR_SYS; 230 } 231 child = (int)fork(); 232 if (PetscUnlikely(child < 0)) { 233 (*PetscErrorPrintf)("Error in fork() prior to attaching debugger\n"); 234 return PETSC_ERR_SYS; 235 } 236 petscindebugger = PETSC_TRUE; 237 238 /* 239 Swap role the parent and child. This is (I think) so that control c typed 240 in the debugger goes to the correct process. 241 */ 242 #if !defined(PETSC_DO_NOT_SWAP_CHILD_FOR_DEBUGGER) 243 child = child ? 0 : (int)getppid(); 244 #endif 245 246 if (child) { /* I am the parent, will run the debugger */ 247 const char *args[10]; 248 char pid[10]; 249 PetscInt j, jj; 250 PetscBool isdbx, isidb, isxldb, isxxgdb, isups, isxdb, isworkshop, isddd, iskdbg, islldb; 251 252 PetscCall(PetscGetHostName(hostname, sizeof(hostname))); 253 /* 254 We need to send a continue signal to the "child" process on the 255 alpha, otherwise it just stays off forever 256 */ 257 #if defined(PETSC_NEED_KILL_FOR_DEBUGGER) 258 kill(child, SIGCONT); 259 #endif 260 PetscCall(PetscSNPrintf(pid, PETSC_STATIC_ARRAY_LENGTH(pid), "%d", child)); 261 262 PetscCall(PetscStrcmp(PetscDebugger, "xxgdb", &isxxgdb)); 263 PetscCall(PetscStrcmp(PetscDebugger, "ddd", &isddd)); 264 PetscCall(PetscStrcmp(PetscDebugger, "kdbg", &iskdbg)); 265 PetscCall(PetscStrcmp(PetscDebugger, "ups", &isups)); 266 PetscCall(PetscStrcmp(PetscDebugger, "xldb", &isxldb)); 267 PetscCall(PetscStrcmp(PetscDebugger, "xdb", &isxdb)); 268 PetscCall(PetscStrcmp(PetscDebugger, "dbx", &isdbx)); 269 PetscCall(PetscStrcmp(PetscDebugger, "idb", &isidb)); 270 PetscCall(PetscStrcmp(PetscDebugger, "workshop", &isworkshop)); 271 PetscCall(PetscStrcmp(PetscDebugger, "lldb", &islldb)); 272 273 if (isxxgdb || isups || isddd) { 274 args[1] = program; 275 args[2] = pid; 276 args[3] = "-display"; 277 args[0] = PetscDebugger; 278 args[4] = display; 279 args[5] = NULL; 280 printf("PETSC: Attaching %s to %s %s on %s\n", args[0], args[1], pid, hostname); 281 if (execvp(args[0], (char **)args) < 0) { 282 perror("Unable to start debugger"); 283 exit(0); 284 } 285 } else if (iskdbg) { 286 args[1] = "-p"; 287 args[2] = pid; 288 args[3] = program; 289 args[4] = "-display"; 290 args[0] = PetscDebugger; 291 args[5] = display; 292 args[6] = NULL; 293 printf("PETSC: Attaching %s to %s %s on %s\n", args[0], args[3], pid, hostname); 294 if (execvp(args[0], (char **)args) < 0) { 295 perror("Unable to start debugger"); 296 exit(0); 297 } 298 } else if (isxldb) { 299 args[1] = "-a"; 300 args[2] = pid; 301 args[3] = program; 302 args[4] = "-display"; 303 args[0] = PetscDebugger; 304 args[5] = display; 305 args[6] = NULL; 306 printf("PETSC: Attaching %s to %s %s on %s\n", args[0], args[1], pid, hostname); 307 if (execvp(args[0], (char **)args) < 0) { 308 perror("Unable to start debugger"); 309 exit(0); 310 } 311 } else if (isworkshop) { 312 args[1] = "-s"; 313 args[2] = pid; 314 args[3] = "-D"; 315 args[4] = "-"; 316 args[0] = PetscDebugger; 317 args[5] = pid; 318 args[6] = "-display"; 319 args[7] = display; 320 args[8] = NULL; 321 printf("PETSC: Attaching %s to %s on %s\n", args[0], pid, hostname); 322 if (execvp(args[0], (char **)args) < 0) { 323 perror("Unable to start debugger"); 324 exit(0); 325 } 326 } else { 327 j = 0; 328 if (UseDebugTerminal) { 329 PetscBool cmp; 330 char *tmp, *tmp1; 331 PetscCall(PetscStrncmp(DebugTerminal, "Terminal", 8, &cmp)); 332 if (cmp) { 333 char command[1024]; 334 if (islldb) PetscCall(PetscSNPrintf(command, sizeof(command), "osascript -e 'tell app \"Terminal\" to do script \"lldb -p %s \"'\n", pid)); 335 else { 336 char fullprogram[PETSC_MAX_PATH_LEN]; 337 PetscCall(PetscGetFullPath(program, fullprogram, sizeof(fullprogram))); 338 PetscCall(PetscSNPrintf(command, sizeof(command), "osascript -e 'tell app \"Terminal\" to do script \"%s %s %s \"'\n", PetscDebugger, fullprogram, pid)); 339 } 340 #if defined(PETSC_HAVE_POPEN) 341 PetscCall(PetscPOpen(PETSC_COMM_SELF, NULL, command, "r", NULL)); 342 #else 343 printf("-debug_terminal Terminal is not available on this system since PETSC_HAVE_POPEN is not defined in this configuration\n"); 344 #endif 345 exit(0); 346 } 347 348 PetscCall(PetscStrncmp(DebugTerminal, "screen", 6, &cmp)); 349 if (!cmp) PetscCall(PetscStrncmp(DebugTerminal, "gnome-terminal", 6, &cmp)); 350 if (cmp) display[0] = 0; /* when using screen, we never pass -display */ 351 args[j++] = tmp = DebugTerminal; 352 if (display[0]) { 353 args[j++] = "-display"; 354 args[j++] = display; 355 } 356 while (*tmp) { 357 PetscCall(PetscStrchr(tmp, ' ', &tmp1)); 358 if (!tmp1) break; 359 *tmp1 = 0; 360 tmp = tmp1 + 1; 361 args[j++] = tmp; 362 } 363 } 364 args[j++] = PetscDebugger; 365 jj = j; 366 /* this is for default gdb */ 367 args[j++] = program; 368 args[j++] = pid; 369 args[j++] = NULL; 370 371 if (isidb) { 372 j = jj; 373 args[j++] = "-pid"; 374 args[j++] = pid; 375 args[j++] = "-gdb"; 376 args[j++] = program; 377 args[j++] = NULL; 378 } 379 if (islldb) { 380 j = jj; 381 args[j++] = "-p"; 382 args[j++] = pid; 383 args[j++] = NULL; 384 } 385 if (isdbx) { 386 j = jj; 387 #if defined(PETSC_USE_P_FOR_DEBUGGER) 388 args[j++] = "-p"; 389 args[j++] = pid; 390 args[j++] = program; 391 #elif defined(PETSC_USE_LARGEP_FOR_DEBUGGER) 392 args[j++] = "-l"; 393 args[j++] = "ALL"; 394 args[j++] = "-P"; 395 args[j++] = pid; 396 args[j++] = program; 397 #elif defined(PETSC_USE_A_FOR_DEBUGGER) 398 args[j++] = "-a"; 399 args[j++] = pid; 400 #elif defined(PETSC_USE_PID_FOR_DEBUGGER) 401 args[j++] = "-pid"; 402 args[j++] = pid; 403 args[j++] = program; 404 #else 405 args[j++] = program; 406 args[j++] = pid; 407 #endif 408 args[j++] = NULL; 409 } 410 if (UseDebugTerminal) { 411 if (display[0]) printf("PETSC: Attaching %s to %s of pid %s on display %s on machine %s\n", PetscDebugger, program, pid, display, hostname); 412 else printf("PETSC: Attaching %s to %s on pid %s on %s\n", PetscDebugger, program, pid, hostname); 413 414 if (execvp(args[0], (char **)args) < 0) { 415 perror("Unable to start debugger in xterm"); 416 exit(0); 417 } 418 } else { 419 printf("PETSC: Attaching %s to %s of pid %s on %s\n", PetscDebugger, program, pid, hostname); 420 if (execvp(args[0], (char **)args) < 0) { 421 perror("Unable to start debugger"); 422 exit(0); 423 } 424 } 425 } 426 } else { /* I am the child, continue with user code */ 427 sleeptime = 10; /* default to sleep waiting for debugger */ 428 PetscCall(PetscOptionsGetReal(NULL, NULL, "-debugger_pause", &sleeptime, NULL)); 429 if (sleeptime < 0) sleeptime = -sleeptime; 430 #if defined(PETSC_NEED_DEBUGGER_NO_SLEEP) 431 /* 432 HP cannot attach process to sleeping debugger, hence count instead 433 */ 434 { 435 PetscReal x = 1.0; 436 int i = 10000000; 437 while (i--) x++; /* cannot attach to sleeper */ 438 } 439 #elif defined(PETSC_HAVE_SLEEP_RETURNS_EARLY) 440 /* 441 IBM sleep may return at anytime, hence must see if there is more time to sleep 442 */ 443 { 444 int left = sleeptime; 445 while (left > 0) left = PetscSleep(left) - 1; 446 } 447 #else 448 PetscSleep(sleeptime); 449 #endif 450 } 451 #endif 452 return 0; 453 } 454 455 /*@C 456 PetscAttachDebuggerErrorHandler - Error handler that attaches 457 a debugger to a running process when an error is detected. 458 This routine is useful for examining variables, etc. 459 460 Not Collective 461 462 Input Parameters: 463 + comm - communicator over which error occurred 464 . line - the line number of the error (indicated by __LINE__) 465 . file - the file in which the error was detected (indicated by __FILE__) 466 . message - an error text string, usually just printed to the screen 467 . number - the generic error number 468 . p - `PETSC_ERROR_INITIAL` if error just detected, otherwise `PETSC_ERROR_REPEAT` 469 - ctx - error handler context 470 471 Options Database Keys: 472 + -on_error_attach_debugger [noxterm,dbx,xxgdb,xdb,xldb,gdb] [-display name] - Activates debugger attachment 473 - -start_in_debugger [noxterm,dbx,xxgdb,xdb,xldb,gdb] [-display name] [-debugger_ranks m,n] 474 475 Level: developer 476 477 Notes: 478 By default the GNU debugger, gdb, is used. Alternatives are cuda-gdb, lldb, dbx and 479 xxgdb,xldb (on IBM rs6000), xdb (on HP-UX). 480 481 Most users need not directly employ this routine and the other error 482 handlers, but can instead use the simplified interface SETERR, which has 483 the calling sequence 484 $ SETERRQ(PETSC_COMM_SELF,number,p,message) 485 486 Notes for experienced users: 487 Use `PetscPushErrorHandler()` to set the desired error handler. The 488 currently available PETSc error handlers are 489 $ PetscTraceBackErrorHandler() 490 $ PetscAttachDebuggerErrorHandler() 491 $ PetscAbortErrorHandler() 492 or you may write your own. 493 494 Developer Note: 495 This routine calls abort instead of returning because if it returned then `MPI_Abort()` would get called which can generate an exception 496 causing the debugger to be attached again in a cycle. 497 498 .seealso: `PetscSetDebuggerFromString()`, `PetscSetDebugger()`, `PetscSetDefaultDebugger()`, `PetscError()`, `PetscPushErrorHandler()`, `PetscPopErrorHandler()`, `PetscTraceBackErrorHandler()`, 499 `PetscAbortErrorHandler()`, `PetscMPIAbortErrorHandler()`, `PetscEmacsClientErrorHandler()`, `PetscReturnErrorHandler()`, `PetscSetDebugTermainal()` 500 @*/ 501 PetscErrorCode PetscAttachDebuggerErrorHandler(MPI_Comm comm, int line, const char *fun, const char *file, PetscErrorCode num, PetscErrorType p, const char *mess, void *ctx) 502 { 503 if (!mess) mess = " "; 504 505 if (fun) (*PetscErrorPrintf)("%s() at %s:%d %s\n", fun, file, line, mess); 506 else (*PetscErrorPrintf)("%s:%d %s\n", file, line, mess); 507 508 PetscAttachDebugger(); 509 abort(); /* call abort because don't want to kill other MPI ranks that may successfully attach to debugger */ 510 PetscFunctionReturn(0); 511 } 512 513 /*@C 514 PetscStopForDebugger - Prints a message to the screen indicating how to 515 attach to the process with the debugger and then waits for the 516 debugger to attach. 517 518 Not Collective 519 520 Options Database Key: 521 . -stop_for_debugger - will stop for you to attach the debugger when PetscInitialize() is called 522 523 Level: developer 524 525 Note: 526 This is likely never needed since `PetscAttachDebugger()` is easier to use and seems to always work. 527 528 Developer Note: 529 Since this can be called by the error handler, should it be calling `SETERRQ()` and `PetscCall()`? 530 531 .seealso: `PetscSetDebugger()`, `PetscAttachDebugger()` 532 @*/ 533 PetscErrorCode PetscStopForDebugger(void) 534 { 535 PetscErrorCode ierr; 536 PetscInt sleeptime = 0; 537 #if !defined(PETSC_CANNOT_START_DEBUGGER) 538 int ppid; 539 PetscMPIInt rank; 540 char program[PETSC_MAX_PATH_LEN], hostname[256]; 541 PetscBool isdbx, isxldb, isxxgdb, isddd, iskdbg, isups, isxdb, islldb; 542 #endif 543 544 PetscFunctionBegin; 545 #if defined(PETSC_CANNOT_START_DEBUGGER) 546 (*PetscErrorPrintf)("System cannot start debugger; just continuing program\n"); 547 #else 548 ierr = MPI_Comm_rank(PETSC_COMM_WORLD, &rank); 549 if (ierr) rank = 0; /* ignore error since this may be already in error handler */ 550 ierr = PetscGetHostName(hostname, sizeof(hostname)); 551 if (ierr) { 552 (*PetscErrorPrintf)("Cannot determine hostname; just continuing program\n"); 553 PetscFunctionReturn(0); 554 } 555 556 ierr = PetscGetProgramName(program, sizeof(program)); 557 if (ierr) { 558 (*PetscErrorPrintf)("Cannot determine program name; just continuing program\n"); 559 PetscFunctionReturn(0); 560 } 561 if (!program[0]) { 562 (*PetscErrorPrintf)("Cannot determine program name; just continuing program\n"); 563 PetscFunctionReturn(0); 564 } 565 566 ppid = getpid(); 567 568 PetscCall(PetscStrcmp(PetscDebugger, "xxgdb", &isxxgdb)); 569 PetscCall(PetscStrcmp(PetscDebugger, "ddd", &isddd)); 570 PetscCall(PetscStrcmp(PetscDebugger, "kdbg", &iskdbg)); 571 PetscCall(PetscStrcmp(PetscDebugger, "ups", &isups)); 572 PetscCall(PetscStrcmp(PetscDebugger, "xldb", &isxldb)); 573 PetscCall(PetscStrcmp(PetscDebugger, "xdb", &isxdb)); 574 PetscCall(PetscStrcmp(PetscDebugger, "dbx", &isdbx)); 575 PetscCall(PetscStrcmp(PetscDebugger, "lldb", &islldb)); 576 577 if (isxxgdb || isups || isddd || iskdbg) printf("[%d]%s>>%s %s %d\n", rank, hostname, PetscDebugger, program, ppid); 578 else if (isxldb) printf("[%d]%s>>%s -a %d %s\n", rank, hostname, PetscDebugger, ppid, program); 579 else if (islldb) printf("[%d]%s>>%s -p %d\n", rank, hostname, PetscDebugger, ppid); 580 else if (isdbx) { 581 #if defined(PETSC_USE_P_FOR_DEBUGGER) 582 printf("[%d]%s>>%s -p %d %s\n", rank, hostname, PetscDebugger, ppid, program); 583 #elif defined(PETSC_USE_LARGEP_FOR_DEBUGGER) 584 printf("[%d]%s>>%s -l ALL -P %d %s\n", rank, hostname, PetscDebugger, ppid, program); 585 #elif defined(PETSC_USE_A_FOR_DEBUGGER) 586 printf("[%d]%s>>%s -a %d\n", rank, hostname, PetscDebugger, ppid); 587 #elif defined(PETSC_USE_PID_FOR_DEBUGGER) 588 printf("[%d]%s>>%s -pid %d %s\n", rank, hostname, PetscDebugger, ppid, program); 589 #else 590 printf("[%d]%s>>%s %s %d\n", rank, hostname, PetscDebugger, program, ppid); 591 #endif 592 } 593 #endif /* PETSC_CANNOT_START_DEBUGGER */ 594 595 fflush(stdout); /* ignore error because may already be in error handler */ 596 597 sleeptime = 25; /* default to sleep waiting for debugger */ 598 PetscOptionsGetInt(NULL, NULL, "-debugger_pause", &sleeptime, NULL); /* ignore error because may already be in error handler */ 599 if (sleeptime < 0) sleeptime = -sleeptime; 600 #if defined(PETSC_NEED_DEBUGGER_NO_SLEEP) 601 /* 602 HP cannot attach process to sleeping debugger, hence count instead 603 */ 604 { 605 PetscReal x = 1.0; 606 int i = 10000000; 607 while (i--) x++; /* cannot attach to sleeper */ 608 } 609 #elif defined(PETSC_HAVE_SLEEP_RETURNS_EARLY) 610 /* 611 IBM sleep may return at anytime, hence must see if there is more time to sleep 612 */ 613 { 614 int left = sleeptime; 615 while (left > 0) left = sleep(left) - 1; 616 } 617 #else 618 PetscSleep(sleeptime); 619 #endif 620 PetscFunctionReturn(0); 621 } 622