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 Parameters: 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 Keys: 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 Notes: 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() 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 Notes: 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 PetscErrorCode ierr; 211 char program[PETSC_MAX_PATH_LEN],display[256],hostname[64]; 212 #endif 213 214 PetscFunctionBegin; 215 #if defined(PETSC_CANNOT_START_DEBUGGER) || !defined(PETSC_HAVE_FORK) 216 (*PetscErrorPrintf)("System cannot start debugger\n"); 217 (*PetscErrorPrintf)("On Cray run program in Totalview debugger\n"); 218 (*PetscErrorPrintf)("On Windows use Developer Studio(MSDEV)\n"); 219 PETSCABORT(PETSC_COMM_WORLD,PETSC_ERR_SUP_SYS); 220 #else 221 ierr = PetscGetDisplay(display,sizeof(display)); 222 if (PetscUnlikely(ierr)) { 223 (*PetscErrorPrintf)("Cannot determine display\n"); 224 PetscFunctionReturn(PETSC_ERR_SYS); 225 } 226 PetscCall(PetscGetProgramName(program,sizeof(program))); 227 if (PetscUnlikely(ierr)) { 228 (*PetscErrorPrintf)("Cannot determine program name\n"); 229 PetscFunctionReturn(PETSC_ERR_SYS); 230 } 231 if (PetscUnlikely(!program[0])) { 232 (*PetscErrorPrintf)("Cannot determine program name\n"); 233 PetscFunctionReturn(PETSC_ERR_SYS); 234 } 235 child = (int)fork(); 236 if (PetscUnlikely(child < 0)) { 237 (*PetscErrorPrintf)("Error in fork() prior to attaching debugger\n"); 238 PetscFunctionReturn(PETSC_ERR_SYS); 239 } 240 petscindebugger = PETSC_TRUE; 241 242 /* 243 Swap role the parent and child. This is (I think) so that control c typed 244 in the debugger goes to the correct process. 245 */ 246 #if !defined(PETSC_DO_NOT_SWAP_CHILD_FOR_DEBUGGER) 247 if (child) child = 0; 248 else child = (int)getppid(); 249 #endif 250 251 if (child) { /* I am the parent, will run the debugger */ 252 const char *args[10]; 253 char pid[10]; 254 PetscInt j,jj; 255 PetscBool isdbx,isidb,isxldb,isxxgdb,isups,isxdb,isworkshop,isddd,iskdbg,islldb; 256 257 PetscCall(PetscGetHostName(hostname,sizeof(hostname))); 258 /* 259 We need to send a continue signal to the "child" process on the 260 alpha, otherwise it just stays off forever 261 */ 262 #if defined(PETSC_NEED_KILL_FOR_DEBUGGER) 263 kill(child,SIGCONT); 264 #endif 265 sprintf(pid,"%d",child); 266 267 PetscCall(PetscStrcmp(PetscDebugger,"xxgdb",&isxxgdb)); 268 PetscCall(PetscStrcmp(PetscDebugger,"ddd",&isddd)); 269 PetscCall(PetscStrcmp(PetscDebugger,"kdbg",&iskdbg)); 270 PetscCall(PetscStrcmp(PetscDebugger,"ups",&isups)); 271 PetscCall(PetscStrcmp(PetscDebugger,"xldb",&isxldb)); 272 PetscCall(PetscStrcmp(PetscDebugger,"xdb",&isxdb)); 273 PetscCall(PetscStrcmp(PetscDebugger,"dbx",&isdbx)); 274 PetscCall(PetscStrcmp(PetscDebugger,"idb",&isidb)); 275 PetscCall(PetscStrcmp(PetscDebugger,"workshop",&isworkshop)); 276 PetscCall(PetscStrcmp(PetscDebugger,"lldb",&islldb)); 277 278 if (isxxgdb || isups || isddd) { 279 args[1] = program; args[2] = pid; args[3] = "-display"; 280 args[0] = PetscDebugger; args[4] = display; args[5] = NULL; 281 printf("PETSC: Attaching %s to %s %s on %s\n",args[0],args[1],pid,hostname); 282 if (execvp(args[0],(char**)args) < 0) { 283 perror("Unable to start debugger"); 284 exit(0); 285 } 286 } else if (iskdbg) { 287 args[1] = "-p"; args[2] = pid; args[3] = program; args[4] = "-display"; 288 args[0] = PetscDebugger; args[5] = display; args[6] = NULL; 289 printf("PETSC: Attaching %s to %s %s on %s\n",args[0],args[3],pid,hostname); 290 if (execvp(args[0],(char**)args) < 0) { 291 perror("Unable to start debugger"); 292 exit(0); 293 } 294 } else if (isxldb) { 295 args[1] = "-a"; args[2] = pid; args[3] = program; args[4] = "-display"; 296 args[0] = PetscDebugger; args[5] = display; args[6] = NULL; 297 printf("PETSC: Attaching %s to %s %s on %s\n",args[0],args[1],pid,hostname); 298 if (execvp(args[0],(char**)args) < 0) { 299 perror("Unable to start debugger"); 300 exit(0); 301 } 302 } else if (isworkshop) { 303 args[1] = "-s"; args[2] = pid; args[3] = "-D"; args[4] = "-"; 304 args[0] = PetscDebugger; args[5] = pid; args[6] = "-display"; args[7] = display; args[8] = NULL; 305 printf("PETSC: Attaching %s to %s on %s\n",args[0],pid,hostname); 306 if (execvp(args[0],(char**)args) < 0) { 307 perror("Unable to start debugger"); 308 exit(0); 309 } 310 } else { 311 j = 0; 312 if (UseDebugTerminal) { 313 PetscBool cmp; 314 char *tmp,*tmp1; 315 PetscCall(PetscStrncmp(DebugTerminal,"Terminal",8,&cmp)); 316 if (cmp) { 317 char command[1024]; 318 PetscCall(PetscSNPrintf(command,sizeof(command),"osascript -e 'tell app \"Terminal\" to do script \"lldb -p %s %s \"'\n",pid,program)); 319 PetscCall(PetscPOpen(PETSC_COMM_SELF,NULL,command,"r",NULL)); 320 exit(0); 321 } 322 323 PetscCall(PetscStrncmp(DebugTerminal,"screen",6,&cmp)); 324 if (!cmp) PetscCall(PetscStrncmp(DebugTerminal,"gnome-terminal",6,&cmp)); 325 if (cmp) display[0] = 0; /* when using screen, we never pass -display */ 326 args[j++] = tmp = DebugTerminal; 327 if (display[0]) { 328 args[j++] = "-display"; args[j++] = display; 329 } 330 while (*tmp) { 331 PetscCall(PetscStrchr(tmp,' ',&tmp1)); 332 if (!tmp1) break; 333 *tmp1 = 0; 334 tmp = tmp1+1; 335 args[j++] = tmp; 336 } 337 } 338 args[j++] = PetscDebugger; 339 jj = j; 340 /* this is for default gdb */ 341 args[j++] = program; 342 args[j++] = pid; 343 args[j++] = NULL; 344 345 if (isidb) { 346 j = jj; 347 args[j++] = "-pid"; 348 args[j++] = pid; 349 args[j++] = "-gdb"; 350 args[j++] = program; 351 args[j++] = NULL; 352 } 353 if (islldb) { 354 j = jj; 355 args[j++] = "-p"; 356 args[j++] = pid; 357 args[j++] = NULL; 358 } 359 if (isdbx) { 360 j = jj; 361 #if defined(PETSC_USE_P_FOR_DEBUGGER) 362 args[j++] = "-p"; 363 args[j++] = pid; 364 args[j++] = program; 365 #elif defined(PETSC_USE_LARGEP_FOR_DEBUGGER) 366 args[j++] = "-l"; 367 args[j++] = "ALL"; 368 args[j++] = "-P"; 369 args[j++] = pid; 370 args[j++] = program; 371 #elif defined(PETSC_USE_A_FOR_DEBUGGER) 372 args[j++] = "-a"; 373 args[j++] = pid; 374 #elif defined(PETSC_USE_PID_FOR_DEBUGGER) 375 args[j++] = "-pid"; 376 args[j++] = pid; 377 args[j++] = program; 378 #else 379 args[j++] = program; 380 args[j++] = pid; 381 #endif 382 args[j++] = NULL; 383 } 384 if (UseDebugTerminal) { 385 if (display[0]) printf("PETSC: Attaching %s to %s of pid %s on display %s on machine %s\n",PetscDebugger,program,pid,display,hostname); 386 else printf("PETSC: Attaching %s to %s on pid %s on %s\n",PetscDebugger,program,pid,hostname); 387 388 if (execvp(args[0],(char**)args) < 0) { 389 perror("Unable to start debugger in xterm"); 390 exit(0); 391 } 392 } else { 393 printf("PETSC: Attaching %s to %s of pid %s on %s\n",PetscDebugger,program,pid,hostname); 394 if (execvp(args[0],(char**)args) < 0) { 395 perror("Unable to start debugger"); 396 exit(0); 397 } 398 } 399 } 400 } else { /* I am the child, continue with user code */ 401 sleeptime = 10; /* default to sleep waiting for debugger */ 402 PetscCall(PetscOptionsGetReal(NULL,NULL,"-debugger_pause",&sleeptime,NULL)); 403 if (sleeptime < 0) sleeptime = -sleeptime; 404 #if defined(PETSC_NEED_DEBUGGER_NO_SLEEP) 405 /* 406 HP cannot attach process to sleeping debugger, hence count instead 407 */ 408 { 409 PetscReal x = 1.0; 410 int i =10000000; 411 while (i--) x++; /* cannot attach to sleeper */ 412 } 413 #elif defined(PETSC_HAVE_SLEEP_RETURNS_EARLY) 414 /* 415 IBM sleep may return at anytime, hence must see if there is more time to sleep 416 */ 417 { 418 int left = sleeptime; 419 while (left > 0) left = PetscSleep(left) - 1; 420 } 421 #else 422 PetscSleep(sleeptime); 423 #endif 424 } 425 #endif 426 PetscFunctionReturn(0); 427 } 428 429 /*@C 430 PetscAttachDebuggerErrorHandler - Error handler that attaches 431 a debugger to a running process when an error is detected. 432 This routine is useful for examining variables, etc. 433 434 Not Collective 435 436 Input Parameters: 437 + comm - communicator over which error occurred 438 . line - the line number of the error (indicated by __LINE__) 439 . file - the file in which the error was detected (indicated by __FILE__) 440 . message - an error text string, usually just printed to the screen 441 . number - the generic error number 442 . p - PETSC_ERROR_INITIAL if error just detected, otherwise PETSC_ERROR_REPEAT 443 - ctx - error handler context 444 445 Options Database Keys: 446 + -on_error_attach_debugger [noxterm,dbx,xxgdb,xdb,xldb,gdb] [-display name] - Activates debugger attachment 447 - -start_in_debugger [noxterm,dbx,xxgdb,xdb,xldb,gdb] [-display name] [-debugger_ranks m,n] 448 449 Level: developer 450 451 Notes: 452 By default the GNU debugger, gdb, is used. Alternatives are cuda-gdb, lldb, dbx and 453 xxgdb,xldb (on IBM rs6000), xdb (on HP-UX). 454 455 Most users need not directly employ this routine and the other error 456 handlers, but can instead use the simplified interface SETERR, which has 457 the calling sequence 458 $ SETERRQ(PETSC_COMM_SELF,number,p,message) 459 460 Notes for experienced users: 461 Use PetscPushErrorHandler() to set the desired error handler. The 462 currently available PETSc error handlers are 463 $ PetscTraceBackErrorHandler() 464 $ PetscAttachDebuggerErrorHandler() 465 $ PetscAbortErrorHandler() 466 or you may write your own. 467 468 .seealso: PetscSetDebuggerFromString(), PetscSetDebugger(), PetscSetDefaultDebugger(), PetscError(), PetscPushErrorHandler(), PetscPopErrorHandler(), PetscTraceBackErrorHandler(), 469 PetscAbortErrorHandler(), PetscMPIAbortErrorHandler(), PetscEmacsClientErrorHandler(), PetscReturnErrorHandler(), PetscSetDebugTermainal() 470 @*/ 471 PetscErrorCode PetscAttachDebuggerErrorHandler(MPI_Comm comm,int line,const char *fun,const char *file,PetscErrorCode num,PetscErrorType p,const char *mess,void *ctx) 472 { 473 PetscErrorCode ierr; 474 475 PetscFunctionBegin; 476 if (!fun) fun = "User provided function"; 477 if (!mess) mess = " "; 478 479 (*PetscErrorPrintf)("%s() at %s:%d %s\n",fun,file,line,mess); 480 481 ierr = PetscAttachDebugger(); 482 if (ierr) abort(); /* call abort because don't want to kill other MPI processes that may successfully attach to debugger */ 483 PetscFunctionReturn(0); 484 } 485 486 /*@C 487 PetscStopForDebugger - Prints a message to the screen indicating how to 488 attach to the process with the debugger and then waits for the 489 debugger to attach. 490 491 Not Collective 492 493 Options Database: 494 . -stop_for_debugger - will stop for you to attach the debugger when PetscInitialize() is called 495 496 Level: developer 497 498 Notes: 499 This is likely never needed since PetscAttachDebugger() is easier to use and seems to always work. 500 501 Developer Notes: 502 Since this can be called by the error handler, should it be calling SETERRQ() and PetscCall()? 503 504 .seealso: PetscSetDebugger(), PetscAttachDebugger() 505 @*/ 506 PetscErrorCode PetscStopForDebugger(void) 507 { 508 PetscErrorCode ierr; 509 PetscInt sleeptime=0; 510 #if !defined(PETSC_CANNOT_START_DEBUGGER) 511 int ppid; 512 PetscMPIInt rank; 513 char program[PETSC_MAX_PATH_LEN],hostname[256]; 514 PetscBool isdbx,isxldb,isxxgdb,isddd,iskdbg,isups,isxdb,islldb; 515 #endif 516 517 PetscFunctionBegin; 518 #if defined(PETSC_CANNOT_START_DEBUGGER) 519 (*PetscErrorPrintf)("System cannot start debugger; just continuing program\n"); 520 #else 521 ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank); 522 if (ierr) rank = 0; /* ignore error since this may be already in error handler */ 523 ierr = PetscGetHostName(hostname,sizeof(hostname)); 524 if (ierr) { 525 (*PetscErrorPrintf)("Cannot determine hostname; just continuing program\n"); 526 PetscFunctionReturn(0); 527 } 528 529 ierr = PetscGetProgramName(program,sizeof(program)); 530 if (ierr) { 531 (*PetscErrorPrintf)("Cannot determine program name; just continuing program\n"); 532 PetscFunctionReturn(0); 533 } 534 if (!program[0]) { 535 (*PetscErrorPrintf)("Cannot determine program name; just continuing program\n"); 536 PetscFunctionReturn(0); 537 } 538 539 ppid = getpid(); 540 541 PetscCall(PetscStrcmp(PetscDebugger,"xxgdb",&isxxgdb)); 542 PetscCall(PetscStrcmp(PetscDebugger,"ddd",&isddd)); 543 PetscCall(PetscStrcmp(PetscDebugger,"kdbg",&iskdbg)); 544 PetscCall(PetscStrcmp(PetscDebugger,"ups",&isups)); 545 PetscCall(PetscStrcmp(PetscDebugger,"xldb",&isxldb)); 546 PetscCall(PetscStrcmp(PetscDebugger,"xdb",&isxdb)); 547 PetscCall(PetscStrcmp(PetscDebugger,"dbx",&isdbx)); 548 PetscCall(PetscStrcmp(PetscDebugger,"lldb",&islldb)); 549 550 if (isxxgdb || isups || isddd || iskdbg) printf("[%d]%s>>%s %s %d\n",rank,hostname,PetscDebugger,program,ppid); 551 else if (isxldb) printf("[%d]%s>>%s -a %d %s\n",rank,hostname,PetscDebugger,ppid,program); 552 else if (islldb) printf("[%d]%s>>%s -p %d\n",rank,hostname,PetscDebugger,ppid); 553 else if (isdbx) { 554 #if defined(PETSC_USE_P_FOR_DEBUGGER) 555 printf("[%d]%s>>%s -p %d %s\n",rank,hostname,PetscDebugger,ppid,program); 556 #elif defined(PETSC_USE_LARGEP_FOR_DEBUGGER) 557 printf("[%d]%s>>%s -l ALL -P %d %s\n",rank,hostname,PetscDebugger,ppid,program); 558 #elif defined(PETSC_USE_A_FOR_DEBUGGER) 559 printf("[%d]%s>>%s -a %d\n",rank,hostname,PetscDebugger,ppid); 560 #elif defined(PETSC_USE_PID_FOR_DEBUGGER) 561 printf("[%d]%s>>%s -pid %d %s\n",rank,hostname,PetscDebugger,ppid,program); 562 #else 563 printf("[%d]%s>>%s %s %d\n",rank,hostname,PetscDebugger,program,ppid); 564 #endif 565 } 566 #endif /* PETSC_CANNOT_START_DEBUGGER */ 567 568 fflush(stdout); /* ignore error because may already be in error handler */ 569 570 sleeptime = 25; /* default to sleep waiting for debugger */ 571 PetscOptionsGetInt(NULL,NULL,"-debugger_pause",&sleeptime,NULL); /* ignore error because may already be in error handler */ 572 if (sleeptime < 0) sleeptime = -sleeptime; 573 #if defined(PETSC_NEED_DEBUGGER_NO_SLEEP) 574 /* 575 HP cannot attach process to sleeping debugger, hence count instead 576 */ 577 { 578 PetscReal x = 1.0; 579 int i =10000000; 580 while (i--) x++; /* cannot attach to sleeper */ 581 } 582 #elif defined(PETSC_HAVE_SLEEP_RETURNS_EARLY) 583 /* 584 IBM sleep may return at anytime, hence must see if there is more time to sleep 585 */ 586 { 587 int left = sleeptime; 588 while (left > 0) left = sleep(left) - 1; 589 } 590 #else 591 PetscSleep(sleeptime); 592 #endif 593 PetscFunctionReturn(0); 594 } 595