Actual source code: err.c
petsc-3.8.4 2018-03-24
2: /*
3: Code that allows one to set the error handlers
4: */
5: #include <petsc/private/petscimpl.h>
6: #include <petscviewer.h>
8: typedef struct _EH *EH;
9: struct _EH {
10: PetscErrorCode (*handler)(MPI_Comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*);
11: void *ctx;
12: EH previous;
13: };
15: static EH eh = 0;
17: /*@C
18: PetscEmacsClientErrorHandler - Error handler that uses the emacsclient program to
19: load the file where the error occured. Then calls the "previous" error handler.
21: Not Collective
23: Input Parameters:
24: + comm - communicator over which error occured
25: . line - the line number of the error (indicated by __LINE__)
26: . file - the file in which the error was detected (indicated by __FILE__)
27: . mess - an error text string, usually just printed to the screen
28: . n - the generic error number
29: . p - specific error number
30: - ctx - error handler context
32: Options Database Key:
33: . -on_error_emacs <machinename>
35: Level: developer
37: Notes:
38: You must put (server-start) in your .emacs file for the emacsclient software to work
40: Most users need not directly employ this routine and the other error
41: handlers, but can instead use the simplified interface SETERRQ, which has
42: the calling sequence
43: $ SETERRQ(PETSC_COMM_SELF,number,p,mess)
45: Notes for experienced users:
46: Use PetscPushErrorHandler() to set the desired error handler.
48: Developer Note: Since this is an error handler it cannot call CHKERRQ(); thus we just return if an error is detected.
50: Concepts: emacs^going to on error
51: Concepts: error handler^going to line in emacs
53: .seealso: PetscPushErrorHandler(), PetscAttachDebuggerErrorHandler(),
54: PetscAbortErrorHandler()
55: @*/
56: PetscErrorCode PetscEmacsClientErrorHandler(MPI_Comm comm,int line,const char *fun,const char *file,PetscErrorCode n,PetscErrorType p,const char *mess,void *ctx)
57: {
59: char command[PETSC_MAX_PATH_LEN];
60: const char *pdir;
61: FILE *fp;
62: int rval;
65: PetscGetPetscDir(&pdir);if (ierr) PetscFunctionReturn(ierr);
66: sprintf(command,"cd %s; emacsclient --no-wait +%d %s\n",pdir,line,file);
67: #if defined(PETSC_HAVE_POPEN)
68: PetscPOpen(MPI_COMM_WORLD,(char*)ctx,command,"r",&fp);if (ierr) PetscFunctionReturn(ierr);
69: PetscPClose(MPI_COMM_WORLD,fp,&rval);if (ierr) PetscFunctionReturn(ierr);
70: #else
71: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP_SYS,"Cannot run external programs on this machine");
72: #endif
73: PetscPopErrorHandler();if (ierr) PetscFunctionReturn(ierr); /* remove this handler from the stack of handlers */
74: if (!eh) {
75: PetscTraceBackErrorHandler(comm,line,fun,file,n,p,mess,0);if (ierr) PetscFunctionReturn(ierr);
76: } else {
77: (*eh->handler)(comm,line,fun,file,n,p,mess,eh->ctx);if (ierr) PetscFunctionReturn(ierr);
78: }
79: PetscFunctionReturn(ierr);
80: }
82: /*@C
83: PetscPushErrorHandler - Sets a routine to be called on detection of errors.
85: Not Collective
87: Input Parameters:
88: + handler - error handler routine
89: - ctx - optional handler context that contains information needed by the handler (for
90: example file pointers for error messages etc.)
92: Calling sequence of handler:
93: $ int handler(MPI_Comm comm,int line,char *func,char *file,PetscErrorCode n,int p,char *mess,void *ctx);
95: + comm - communicator over which error occured
96: . line - the line number of the error (indicated by __LINE__)
97: . file - the file in which the error was detected (indicated by __FILE__)
98: . n - the generic error number (see list defined in include/petscerror.h)
99: . p - PETSC_ERROR_INITIAL if error just detected, otherwise PETSC_ERROR_REPEAT
100: . mess - an error text string, usually just printed to the screen
101: - ctx - the error handler context
103: Options Database Keys:
104: + -on_error_attach_debugger <noxterm,gdb or dbx>
105: - -on_error_abort
107: Level: intermediate
109: Notes:
110: The currently available PETSc error handlers include PetscTraceBackErrorHandler(),
111: PetscAttachDebuggerErrorHandler(), PetscAbortErrorHandler(), and PetscMPIAbortErrorHandler(), PetscReturnErrorHandler().
113: Fortran Notes: You can only push one error handler from Fortran before poping it.
115: .seealso: PetscPopErrorHandler(), PetscAttachDebuggerErrorHandler(), PetscAbortErrorHandler(), PetscTraceBackErrorHandler(), PetscPushSignalHandler()
117: @*/
118: PetscErrorCode PetscPushErrorHandler(PetscErrorCode (*handler)(MPI_Comm comm,int,const char*,const char*,PetscErrorCode,PetscErrorType,const char*,void*),void *ctx)
119: {
120: EH neweh;
124: PetscNew(&neweh);
125: if (eh) neweh->previous = eh;
126: else neweh->previous = 0;
127: neweh->handler = handler;
128: neweh->ctx = ctx;
129: eh = neweh;
130: return(0);
131: }
133: /*@
134: PetscPopErrorHandler - Removes the latest error handler that was
135: pushed with PetscPushErrorHandler().
137: Not Collective
139: Level: intermediate
141: Concepts: error handler^setting
143: .seealso: PetscPushErrorHandler()
144: @*/
145: PetscErrorCode PetscPopErrorHandler(void)
146: {
147: EH tmp;
151: if (!eh) return(0);
152: tmp = eh;
153: eh = eh->previous;
154: PetscFree(tmp);
155: return(0);
156: }
158: /*@C
159: PetscReturnErrorHandler - Error handler that causes a return to the current
160: level.
162: Not Collective
164: Input Parameters:
165: + comm - communicator over which error occurred
166: . line - the line number of the error (indicated by __LINE__)
167: . file - the file in which the error was detected (indicated by __FILE__)
168: . mess - an error text string, usually just printed to the screen
169: . n - the generic error number
170: . p - specific error number
171: - ctx - error handler context
173: Level: developer
175: Notes:
176: Most users need not directly employ this routine and the other error
177: handlers, but can instead use the simplified interface SETERRQ, which has
178: the calling sequence
179: $ SETERRQ(comm,number,mess)
181: Notes for experienced users:
182: This routine is good for catching errors such as zero pivots in preconditioners
183: or breakdown of iterative methods. It is not appropriate for memory violations
184: and similar errors.
186: Use PetscPushErrorHandler() to set the desired error handler. The
187: currently available PETSc error handlers include PetscTraceBackErrorHandler(),
188: PetscAttachDebuggerErrorHandler(), PetscAbortErrorHandler(), and PetscAbortErrorHandler()
190: Concepts: error handler
192: .seealso: PetscPushErrorHandler(), PetscPopErrorHandler().
193: @*/
195: PetscErrorCode PetscReturnErrorHandler(MPI_Comm comm,int line,const char *fun,const char *file,PetscErrorCode n,PetscErrorType p,const char *mess,void *ctx)
196: {
198: PetscFunctionReturn(n);
199: }
201: static char PetscErrorBaseMessage[1024];
202: /*
203: The numerical values for these are defined in include/petscerror.h; any changes
204: there must also be made here
205: */
206: static const char *PetscErrorStrings[] = {
207: /*55 */ "Out of memory",
208: "No support for this operation for this object type",
209: "No support for this operation on this system",
210: /*58 */ "Operation done in wrong order",
211: /*59 */ "Signal received",
212: /*60 */ "Nonconforming object sizes",
213: "Argument aliasing not permitted",
214: "Invalid argument",
215: /*63 */ "Argument out of range",
216: "Corrupt argument: http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind",
217: "Unable to open file",
218: "Read from file failed",
219: "Write to file failed",
220: "Invalid pointer",
221: /*69 */ "Arguments must have same type",
222: /*70 */ "Attempt to use a pointer that does not point to a valid accessible location",
223: /*71 */ "Zero pivot in LU factorization: http://www.mcs.anl.gov/petsc/documentation/faq.html#zeropivot",
224: /*72 */ "Floating point exception",
225: /*73 */ "Object is in wrong state",
226: "Corrupted Petsc object",
227: "Arguments are incompatible",
228: "Error in external library",
229: /*77 */ "Petsc has generated inconsistent data",
230: "Memory corruption: http://www.mcs.anl.gov/petsc/documentation/installation.html#valgrind",
231: "Unexpected data in file",
232: /*80 */ "Arguments must have same communicators",
233: /*81 */ "Zero pivot in Cholesky factorization: http://www.mcs.anl.gov/petsc/documentation/faq.html#zeropivot",
234: " ",
235: " ",
236: "Overflow in integer operation: http://www.mcs.anl.gov/petsc/documentation/faq.html#64-bit-indices",
237: /*85 */ "Null argument, when expecting valid pointer",
238: /*86 */ "Unknown type. Check for miss-spelling or missing package: http://www.mcs.anl.gov/petsc/documentation/installation.html#external",
239: /*87 */ "MPI library at runtime is not compatible with MPI used at compile time",
240: /*88 */ "Error in system call",
241: /*89 */ "Object Type not set: http://www.mcs.anl.gov/petsc/documentation/faq.html#objecttypenotset"
242: /*90 */ " ",
243: /* */ " ",
244: /* */ " ",
245: /*93 */ "See http://www.mcs.anl.gov/petsc/documentation/linearsolvertable.html for possible LU and Cholesky solvers",
246: /* */ "You cannot overwrite this option since that will conflict with other previously set options",
247: /* */ " ",
248: /*96 */ " ",
249: };
251: /*@C
252: PetscErrorMessage - returns the text string associated with a PETSc error code.
254: Not Collective
256: Input Parameter:
257: . errnum - the error code
259: Output Parameter:
260: + text - the error message (NULL if not desired)
261: - specific - the specific error message that was set with SETERRxxx() or PetscError(). (NULL if not desired)
263: Level: developer
265: Concepts: error handler^messages
267: .seealso: PetscPushErrorHandler(), PetscAttachDebuggerErrorHandler(), PetscError(), SETERRQ(), CHKERRQ()
268: PetscAbortErrorHandler(), PetscTraceBackErrorHandler()
269: @*/
270: PetscErrorCode PetscErrorMessage(int errnum,const char *text[],char **specific)
271: {
273: if (text && errnum > PETSC_ERR_MIN_VALUE && errnum < PETSC_ERR_MAX_VALUE) *text = PetscErrorStrings[errnum-PETSC_ERR_MIN_VALUE-1];
274: else if (text) *text = 0;
276: if (specific) *specific = PetscErrorBaseMessage;
277: return(0);
278: }
280: #if defined(PETSC_CLANGUAGE_CXX)
281: /* C++ exceptions are formally not allowed to propagate through extern "C" code. In practice, far too much software
282: * would be broken if implementations did not handle it it some common cases. However, keep in mind
283: *
284: * Rule 62. Don't allow exceptions to propagate across module boundaries
285: *
286: * in "C++ Coding Standards" by Sutter and Alexandrescu. (This accounts for part of the ongoing C++ binary interface
287: * instability.) Having PETSc raise errors as C++ exceptions was probably misguided and should eventually be removed.
288: *
289: * Here is the problem: You have a C++ function call a PETSc function, and you would like to maintain the error message
290: * and stack information from the PETSc error. You could make everyone write exactly this code in their C++, but that
291: * seems crazy to me.
292: */
293: #include <sstream>
294: #include <stdexcept>
295: static void PetscCxxErrorThrow() {
296: const char *str;
297: if (eh && eh->ctx) {
298: std::ostringstream *msg;
299: msg = (std::ostringstream*) eh->ctx;
300: str = msg->str().c_str();
301: } else str = "Error detected in C PETSc";
303: throw std::runtime_error(str);
304: }
305: #endif
307: /*@C
308: PetscError - Routine that is called when an error has been detected,
309: usually called through the macro SETERRQ(PETSC_COMM_SELF,).
311: Not Collective
313: Input Parameters:
314: + comm - communicator over which error occurred. ALL ranks of this communicator MUST call this routine
315: . line - the line number of the error (indicated by __LINE__)
316: . func - the function name in which the error was detected
317: . file - the file in which the error was detected (indicated by __FILE__)
318: . n - the generic error number
319: . p - PETSC_ERROR_INITIAL indicates the error was initially detected, PETSC_ERROR_REPEAT indicates this is a traceback from a previously detected error
320: - mess - formatted message string - aka printf
322: Level: intermediate
324: Notes:
325: Most users need not directly use this routine and the error handlers, but
326: can instead use the simplified interface SETERRQ, which has the calling
327: sequence
328: $ SETERRQ(comm,n,mess)
330: Fortran Note:
331: This routine is used differently from Fortran
332: $ PetscError(MPI_Comm comm,PetscErrorCode n,PetscErrorType p,char *message)
334: Experienced users can set the error handler with PetscPushErrorHandler().
336: Developer Note: Since this is called after an error condition it should not be calling any error handlers (currently it ignores any error codes)
337: BUT this routine does call regular PETSc functions that may call error handlers, this is problematic and could be fixed by never calling other PETSc routines
338: but this annoying.
340: Concepts: error^setting condition
342: .seealso: PetscTraceBackErrorHandler(), PetscPushErrorHandler(), SETERRQ(), CHKERRQ(), CHKMEMQ, SETERRQ1(), SETERRQ2(), PetscErrorMessage()
343: @*/
344: PetscErrorCode PetscError(MPI_Comm comm,int line,const char *func,const char *file,PetscErrorCode n,PetscErrorType p,const char *mess,...)
345: {
346: va_list Argp;
347: size_t fullLength;
348: char buf[2048],*lbuf = 0;
349: PetscBool ismain;
353: if (!func) func = "User provided function";
354: if (!file) file = "User file";
355: if (comm == MPI_COMM_NULL) comm = PETSC_COMM_SELF;
357: /* Compose the message evaluating the print format */
358: if (mess) {
359: va_start(Argp,mess);
360: PetscVSNPrintf(buf,2048,mess,&fullLength,Argp);
361: va_end(Argp);
362: lbuf = buf;
363: if (p == PETSC_ERROR_INITIAL) PetscStrncpy(PetscErrorBaseMessage,lbuf,1023);
364: }
366: if (!eh) PetscTraceBackErrorHandler(comm,line,func,file,n,p,lbuf,0);
367: else (*eh->handler)(comm,line,func,file,n,p,lbuf,eh->ctx);
369: /*
370: If this is called from the main() routine we call MPI_Abort() instead of
371: return to allow the parallel program to be properly shutdown.
373: Since this is in the error handler we don't check the errors below. Of course,
374: PetscStrncmp() does its own error checking which is problamatic
375: */
376: PetscStrncmp(func,"main",4,&ismain);
377: if (ismain) MPI_Abort(PETSC_COMM_WORLD,(int)ierr);
379: #if defined(PETSC_CLANGUAGE_CXX)
380: if (p == PETSC_ERROR_IN_CXX) {
381: PetscCxxErrorThrow();
382: }
383: #endif
384: PetscFunctionReturn(ierr);
385: }
387: /* -------------------------------------------------------------------------*/
389: /*@C
390: PetscIntView - Prints an array of integers; useful for debugging.
392: Collective on PetscViewer
394: Input Parameters:
395: + N - number of integers in array
396: . idx - array of integers
397: - viewer - location to print array, PETSC_VIEWER_STDOUT_WORLD, PETSC_VIEWER_STDOUT_SELF or 0
399: Level: intermediate
401: Developer Notes: idx cannot be const because may be passed to binary viewer where byte swapping is done
403: .seealso: PetscRealView()
404: @*/
405: PetscErrorCode PetscIntView(PetscInt N,const PetscInt idx[],PetscViewer viewer)
406: {
408: PetscInt j,i,n = N/20,p = N % 20;
409: PetscBool iascii,isbinary;
410: MPI_Comm comm;
413: if (!viewer) viewer = PETSC_VIEWER_STDOUT_SELF;
416: PetscObjectGetComm((PetscObject)viewer,&comm);
418: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
419: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);
420: if (iascii) {
421: PetscViewerASCIIPushSynchronized(viewer);
422: for (i=0; i<n; i++) {
423: PetscViewerASCIISynchronizedPrintf(viewer,"%D:",20*i);
424: for (j=0; j<20; j++) {
425: PetscViewerASCIISynchronizedPrintf(viewer," %D",idx[i*20+j]);
426: }
427: PetscViewerASCIISynchronizedPrintf(viewer,"\n");
428: }
429: if (p) {
430: PetscViewerASCIISynchronizedPrintf(viewer,"%D:",20*n);
431: for (i=0; i<p; i++) { PetscViewerASCIISynchronizedPrintf(viewer," %D",idx[20*n+i]);}
432: PetscViewerASCIISynchronizedPrintf(viewer,"\n");
433: }
434: PetscViewerFlush(viewer);
435: PetscViewerASCIIPopSynchronized(viewer);
436: } else if (isbinary) {
437: PetscMPIInt rank,size,*sizes,Ntotal,*displs,NN;
438: PetscInt *array;
440: PetscMPIIntCast(N,&NN);
441: MPI_Comm_rank(comm,&rank);
442: MPI_Comm_size(comm,&size);
444: if (size > 1) {
445: if (rank) {
446: MPI_Gather(&NN,1,MPI_INT,0,0,MPI_INT,0,comm);
447: MPI_Gatherv((void*)idx,NN,MPIU_INT,0,0,0,MPIU_INT,0,comm);
448: } else {
449: PetscMalloc1(size,&sizes);
450: MPI_Gather(&NN,1,MPI_INT,sizes,1,MPI_INT,0,comm);
451: Ntotal = sizes[0];
452: PetscMalloc1(size,&displs);
453: displs[0] = 0;
454: for (i=1; i<size; i++) {
455: Ntotal += sizes[i];
456: displs[i] = displs[i-1] + sizes[i-1];
457: }
458: PetscMalloc1(Ntotal,&array);
459: MPI_Gatherv((void*)idx,NN,MPIU_INT,array,sizes,displs,MPIU_INT,0,comm);
460: PetscViewerBinaryWrite(viewer,array,Ntotal,PETSC_INT,PETSC_TRUE);
461: PetscFree(sizes);
462: PetscFree(displs);
463: PetscFree(array);
464: }
465: } else {
466: PetscViewerBinaryWrite(viewer,(void*) idx,N,PETSC_INT,PETSC_FALSE);
467: }
468: } else {
469: const char *tname;
470: PetscObjectGetName((PetscObject)viewer,&tname);
471: SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"Cannot handle that PetscViewer of type %s",tname);
472: }
473: return(0);
474: }
476: /*@C
477: PetscRealView - Prints an array of doubles; useful for debugging.
479: Collective on PetscViewer
481: Input Parameters:
482: + N - number of PetscReal in array
483: . idx - array of PetscReal
484: - viewer - location to print array, PETSC_VIEWER_STDOUT_WORLD, PETSC_VIEWER_STDOUT_SELF or 0
486: Level: intermediate
488: Developer Notes: idx cannot be const because may be passed to binary viewer where byte swapping is done
490: .seealso: PetscIntView()
491: @*/
492: PetscErrorCode PetscRealView(PetscInt N,const PetscReal idx[],PetscViewer viewer)
493: {
495: PetscInt j,i,n = N/5,p = N % 5;
496: PetscBool iascii,isbinary;
497: MPI_Comm comm;
500: if (!viewer) viewer = PETSC_VIEWER_STDOUT_SELF;
503: PetscObjectGetComm((PetscObject)viewer,&comm);
505: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
506: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);
507: if (iascii) {
508: PetscViewerASCIIPushSynchronized(viewer);
509: for (i=0; i<n; i++) {
510: PetscViewerASCIISynchronizedPrintf(viewer,"%2d:",(int)5*i);
511: for (j=0; j<5; j++) {
512: PetscViewerASCIISynchronizedPrintf(viewer," %12.4e",(double)idx[i*5+j]);
513: }
514: PetscViewerASCIISynchronizedPrintf(viewer,"\n");
515: }
516: if (p) {
517: PetscViewerASCIISynchronizedPrintf(viewer,"%2d:",(int)5*n);
518: for (i=0; i<p; i++) { PetscViewerASCIISynchronizedPrintf(viewer," %12.4e",(double)idx[5*n+i]);}
519: PetscViewerASCIISynchronizedPrintf(viewer,"\n");
520: }
521: PetscViewerFlush(viewer);
522: PetscViewerASCIIPopSynchronized(viewer);
523: } else if (isbinary) {
524: PetscMPIInt rank,size,*sizes,*displs, Ntotal,NN;
525: PetscReal *array;
527: PetscMPIIntCast(N,&NN);
528: MPI_Comm_rank(comm,&rank);
529: MPI_Comm_size(comm,&size);
531: if (size > 1) {
532: if (rank) {
533: MPI_Gather(&NN,1,MPI_INT,0,0,MPI_INT,0,comm);
534: MPI_Gatherv((PetscReal*)idx,NN,MPIU_REAL,0,0,0,MPIU_REAL,0,comm);
535: } else {
536: PetscMalloc1(size,&sizes);
537: MPI_Gather(&NN,1,MPI_INT,sizes,1,MPI_INT,0,comm);
538: Ntotal = sizes[0];
539: PetscMalloc1(size,&displs);
540: displs[0] = 0;
541: for (i=1; i<size; i++) {
542: Ntotal += sizes[i];
543: displs[i] = displs[i-1] + sizes[i-1];
544: }
545: PetscMalloc1(Ntotal,&array);
546: MPI_Gatherv((PetscReal*)idx,NN,MPIU_REAL,array,sizes,displs,MPIU_REAL,0,comm);
547: PetscViewerBinaryWrite(viewer,array,Ntotal,PETSC_REAL,PETSC_TRUE);
548: PetscFree(sizes);
549: PetscFree(displs);
550: PetscFree(array);
551: }
552: } else {
553: PetscViewerBinaryWrite(viewer,(void*) idx,N,PETSC_REAL,PETSC_FALSE);
554: }
555: } else {
556: const char *tname;
557: PetscObjectGetName((PetscObject)viewer,&tname);
558: SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"Cannot handle that PetscViewer of type %s",tname);
559: }
560: return(0);
561: }
563: /*@C
564: PetscScalarView - Prints an array of scalars; useful for debugging.
566: Collective on PetscViewer
568: Input Parameters:
569: + N - number of scalars in array
570: . idx - array of scalars
571: - viewer - location to print array, PETSC_VIEWER_STDOUT_WORLD, PETSC_VIEWER_STDOUT_SELF or 0
573: Level: intermediate
575: Developer Notes: idx cannot be const because may be passed to binary viewer where byte swapping is done
577: .seealso: PetscIntView(), PetscRealView()
578: @*/
579: PetscErrorCode PetscScalarView(PetscInt N,const PetscScalar idx[],PetscViewer viewer)
580: {
582: PetscInt j,i,n = N/3,p = N % 3;
583: PetscBool iascii,isbinary;
584: MPI_Comm comm;
587: if (!viewer) viewer = PETSC_VIEWER_STDOUT_SELF;
590: PetscObjectGetComm((PetscObject)viewer,&comm);
592: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
593: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);
594: if (iascii) {
595: PetscViewerASCIIPushSynchronized(viewer);
596: for (i=0; i<n; i++) {
597: PetscViewerASCIISynchronizedPrintf(viewer,"%2d:",3*i);
598: for (j=0; j<3; j++) {
599: #if defined(PETSC_USE_COMPLEX)
600: PetscViewerASCIISynchronizedPrintf(viewer," (%12.4e,%12.4e)", (double)PetscRealPart(idx[i*3+j]),(double)PetscImaginaryPart(idx[i*3+j]));
601: #else
602: PetscViewerASCIISynchronizedPrintf(viewer," %12.4e",(double)idx[i*3+j]);
603: #endif
604: }
605: PetscViewerASCIISynchronizedPrintf(viewer,"\n");
606: }
607: if (p) {
608: PetscViewerASCIISynchronizedPrintf(viewer,"%2d:",3*n);
609: for (i=0; i<p; i++) {
610: #if defined(PETSC_USE_COMPLEX)
611: PetscViewerASCIISynchronizedPrintf(viewer," (%12.4e,%12.4e)", (double)PetscRealPart(idx[n*3+i]),(double)PetscImaginaryPart(idx[n*3+i]));
612: #else
613: PetscViewerASCIISynchronizedPrintf(viewer," %12.4e",(double)idx[3*n+i]);
614: #endif
615: }
616: PetscViewerASCIISynchronizedPrintf(viewer,"\n");
617: }
618: PetscViewerFlush(viewer);
619: PetscViewerASCIIPopSynchronized(viewer);
620: } else if (isbinary) {
621: PetscMPIInt size,rank,*sizes,Ntotal,*displs,NN;
622: PetscScalar *array;
624: PetscMPIIntCast(N,&NN);
625: MPI_Comm_rank(comm,&rank);
626: MPI_Comm_size(comm,&size);
628: if (size > 1) {
629: if (rank) {
630: MPI_Gather(&NN,1,MPI_INT,0,0,MPI_INT,0,comm);
631: MPI_Gatherv((void*)idx,NN,MPIU_SCALAR,0,0,0,MPIU_SCALAR,0,comm);
632: } else {
633: PetscMalloc1(size,&sizes);
634: MPI_Gather(&NN,1,MPI_INT,sizes,1,MPI_INT,0,comm);
635: Ntotal = sizes[0];
636: PetscMalloc1(size,&displs);
637: displs[0] = 0;
638: for (i=1; i<size; i++) {
639: Ntotal += sizes[i];
640: displs[i] = displs[i-1] + sizes[i-1];
641: }
642: PetscMalloc1(Ntotal,&array);
643: MPI_Gatherv((void*)idx,NN,MPIU_SCALAR,array,sizes,displs,MPIU_SCALAR,0,comm);
644: PetscViewerBinaryWrite(viewer,array,Ntotal,PETSC_SCALAR,PETSC_TRUE);
645: PetscFree(sizes);
646: PetscFree(displs);
647: PetscFree(array);
648: }
649: } else {
650: PetscViewerBinaryWrite(viewer,(void*) idx,N,PETSC_SCALAR,PETSC_FALSE);
651: }
652: } else {
653: const char *tname;
654: PetscObjectGetName((PetscObject)viewer,&tname);
655: SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"Cannot handle that PetscViewer of type %s",tname);
656: }
657: return(0);
658: }