xref: /petsc/include/petscviewer.h (revision 7d0a6c19129e7069c8a40e210b34ed62989173db)
1 /*
2      PetscViewers are objects where other objects can be looked at or stored.
3 */
4 
5 #if !defined(__PETSCVIEWER_H)
6 #define __PETSCVIEWER_H
7 
8 #if defined(PETSC_USE_EXTERN_CXX) && defined(__cplusplus)
9 extern "C" {
10 #endif
11 
12 /*S
13      PetscViewer - Abstract PETSc object that helps view (in ASCII, binary, graphically etc)
14          other PETSc objects
15 
16    Level: beginner
17 
18   Concepts: viewing
19 
20 .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType
21 S*/
22 typedef struct _p_PetscViewer* PetscViewer;
23 
24 #if defined(PETSC_USE_EXTERN_CXX) && defined(__cplusplus)
25 }
26 #endif
27 
28 #include "petscsys.h"
29 
30 #if defined(PETSC_USE_EXTERN_CXX) && defined(__cplusplus)
31 extern "C" {
32 #endif
33 
34 extern  PetscClassId PETSC_VIEWER_CLASSID;
35 
36 #if defined(PETSC_USE_EXTERN_CXX) && defined(__cplusplus)
37 }
38 #endif
39 
40 
41 /*
42     petscsys.h must be included AFTER the definition of PetscViewer for ADIC to
43    process correctly.
44 */
45 PETSC_EXTERN_CXX_BEGIN
46 /*E
47     PetscViewerType - String with the name of a PETSc PETScViewer
48 
49    Level: beginner
50 
51 .seealso: PetscViewerSetType(), PetscViewer
52 E*/
53 #define PetscViewerType char*
54 #define PETSCVIEWERSOCKET       "socket"
55 #define PETSCVIEWERASCII        "ascii"
56 #define PETSCVIEWERBINARY       "binary"
57 #define PETSCVIEWERSTRING       "string"
58 #define PETSCVIEWERDRAW         "draw"
59 #define PETSCVIEWERVU           "vu"
60 #define PETSCVIEWERMATHEMATICA  "mathematica"
61 #define PETSCVIEWERNETCDF       "netcdf"
62 #define PETSCVIEWERHDF5         "hdf5"
63 #define PETSCVIEWERMATLAB       "matlab"
64 #define PETSCVIEWERAMS          "ams"
65 
66 extern PetscFList PetscViewerList;
67 extern PetscErrorCode  PetscViewerRegisterAll(const char *);
68 extern PetscErrorCode  PetscViewerRegisterDestroy(void);
69 extern PetscErrorCode  PetscViewerInitializePackage(const char[]);
70 
71 extern PetscErrorCode  PetscViewerRegister(const char*,const char*,const char*,PetscErrorCode (*)(PetscViewer));
72 
73 /*MC
74    PetscViewerRegisterDynamic - Adds a viewer
75 
76    Synopsis:
77    PetscErrorCode PetscViewerRegisterDynamic(const char *name_solver,const char *path,const char *name_create,PetscErrorCode (*routine_create)(PetscViewer))
78 
79    Not Collective
80 
81    Input Parameters:
82 +  name_solver - name of a new user-defined viewer
83 .  path - path (either absolute or relative) the library containing this viewer
84 .  name_create - name of routine to create method context
85 -  routine_create - routine to create method context
86 
87    Level: developer
88 
89    Notes:
90    PetscViewerRegisterDynamic() may be called multiple times to add several user-defined viewers.
91 
92    If dynamic libraries are used, then the fourth input argument (routine_create)
93    is ignored.
94 
95    Sample usage:
96 .vb
97    PetscViewerRegisterDynamic("my_viewer_type",/home/username/my_lib/lib/libO/solaris/mylib.a,
98                "MyViewerCreate",MyViewerCreate);
99 .ve
100 
101    Then, your solver can be chosen with the procedural interface via
102 $     PetscViewerSetType(viewer,"my_viewer_type")
103    or at runtime via the option
104 $     -viewer_type my_viewer_type
105 
106   Concepts: registering^Viewers
107 
108 .seealso: PetscViewerRegisterAll(), PetscViewerRegisterDestroy()
109 M*/
110 #if defined(PETSC_USE_DYNAMIC_LIBRARIES)
111 #define PetscViewerRegisterDynamic(a,b,c,d) PetscViewerRegister(a,b,c,0)
112 #else
113 #define PetscViewerRegisterDynamic(a,b,c,d) PetscViewerRegister(a,b,c,d)
114 #endif
115 
116 extern PetscErrorCode  PetscViewerCreate(MPI_Comm,PetscViewer*);
117 PetscPolymorphicSubroutine(PetscViewerCreate,(PetscViewer *v),(PETSC_COMM_SELF,v))
118 extern PetscErrorCode  PetscViewerSetFromOptions(PetscViewer);
119 extern PetscErrorCode  PetscViewerASCIIOpenWithFILE(MPI_Comm,FILE*,PetscViewer*);
120 
121 extern PetscErrorCode  PetscViewerASCIIOpen(MPI_Comm,const char[],PetscViewer*);
122 extern PetscErrorCode  PetscViewerASCIISetFILE(PetscViewer,FILE*);
123 extern PetscErrorCode  PetscViewerBinaryCreate(MPI_Comm,PetscViewer*);
124 extern PetscErrorCode  PetscViewerBinaryOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
125 extern PetscErrorCode  PetscViewerBinaryGetFlowControl(PetscViewer,PetscInt*);
126 extern PetscErrorCode  PetscViewerBinarySetFlowControl(PetscViewer,PetscInt);
127 extern PetscErrorCode  PetscViewerBinarySetMPIIO(PetscViewer);
128 extern PetscErrorCode  PetscViewerBinaryGetMPIIO(PetscViewer,PetscBool *);
129 #if defined(PETSC_HAVE_MPIIO)
130 extern PetscErrorCode  PetscViewerBinaryGetMPIIODescriptor(PetscViewer,MPI_File*);
131 extern PetscErrorCode  PetscViewerBinaryGetMPIIOOffset(PetscViewer,MPI_Offset*);
132 extern PetscErrorCode  PetscViewerBinaryAddMPIIOOffset(PetscViewer,MPI_Offset);
133 #endif
134 
135 extern PetscErrorCode  PetscViewerSocketOpen(MPI_Comm,const char[],int,PetscViewer*);
136 extern PetscErrorCode  PetscViewerStringOpen(MPI_Comm,char[],PetscInt,PetscViewer*);
137 extern PetscErrorCode  PetscViewerDrawOpen(MPI_Comm,const char[],const char[],int,int,int,int,PetscViewer*);
138 extern PetscErrorCode  PetscViewerMathematicaOpen(MPI_Comm, int, const char[], const char[], PetscViewer *);
139 extern PetscErrorCode  PetscViewerSiloOpen(MPI_Comm, const char[], PetscViewer *);
140 extern PetscErrorCode  PetscViewerMatlabOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
141 
142 extern PetscErrorCode  PetscViewerGetType(PetscViewer,const PetscViewerType*);
143 extern PetscErrorCode  PetscViewerSetType(PetscViewer,const PetscViewerType);
144 extern PetscErrorCode  PetscViewerDestroy(PetscViewer);
145 extern PetscErrorCode  PetscViewerGetSingleton(PetscViewer,PetscViewer*);
146 extern PetscErrorCode  PetscViewerRestoreSingleton(PetscViewer,PetscViewer*);
147 extern PetscErrorCode  PetscViewerGetSubcomm(PetscViewer,MPI_Comm,PetscViewer*);
148 extern PetscErrorCode  PetscViewerRestoreSubcomm(PetscViewer,MPI_Comm,PetscViewer*);
149 
150 extern PetscErrorCode  PetscViewerSetUp(PetscViewer);
151 extern PetscErrorCode  PetscViewerView(PetscViewer,PetscViewer);
152 
153 extern PetscErrorCode  PetscViewerSetOptionsPrefix(PetscViewer,const char[]);
154 extern PetscErrorCode  PetscViewerAppendOptionsPrefix(PetscViewer,const char[]);
155 extern PetscErrorCode  PetscViewerGetOptionsPrefix(PetscViewer,const char*[]);
156 
157 /*E
158     PetscViewerFormat - Way a viewer presents the object
159 
160    Level: beginner
161 
162    The values below are also listed in finclude/petscviewer.h. If another values is added below it
163    must also be added there.
164 
165 .seealso: PetscViewerSetFormat(), PetscViewer, PetscViewerType, PetscViewerPushFormat(), PetscViewerPopFormat()
166 E*/
167 typedef enum {
168   PETSC_VIEWER_DEFAULT,
169   PETSC_VIEWER_ASCII_MATLAB,
170   PETSC_VIEWER_ASCII_MATHEMATICA,
171   PETSC_VIEWER_ASCII_IMPL,
172   PETSC_VIEWER_ASCII_INFO,
173   PETSC_VIEWER_ASCII_INFO_DETAIL,
174   PETSC_VIEWER_ASCII_COMMON,
175   PETSC_VIEWER_ASCII_SYMMODU,
176   PETSC_VIEWER_ASCII_INDEX,
177   PETSC_VIEWER_ASCII_DENSE,
178   PETSC_VIEWER_ASCII_MATRIXMARKET,
179   PETSC_VIEWER_ASCII_VTK,
180   PETSC_VIEWER_ASCII_VTK_CELL,
181   PETSC_VIEWER_ASCII_VTK_COORDS,
182   PETSC_VIEWER_ASCII_PCICE,
183   PETSC_VIEWER_ASCII_PYLITH,
184   PETSC_VIEWER_ASCII_PYLITH_LOCAL,
185   PETSC_VIEWER_ASCII_PYTHON,
186   PETSC_VIEWER_ASCII_FACTOR_INFO,
187   PETSC_VIEWER_DRAW_BASIC,
188   PETSC_VIEWER_DRAW_LG,
189   PETSC_VIEWER_DRAW_CONTOUR,
190   PETSC_VIEWER_DRAW_PORTS,
191   PETSC_VIEWER_NATIVE,
192   PETSC_VIEWER_NOFORMAT
193   } PetscViewerFormat;
194 
195 extern PetscErrorCode  PetscViewerSetFormat(PetscViewer,PetscViewerFormat);
196 extern PetscErrorCode  PetscViewerPushFormat(PetscViewer,PetscViewerFormat);
197 extern PetscErrorCode  PetscViewerPopFormat(PetscViewer);
198 extern PetscErrorCode  PetscViewerGetFormat(PetscViewer,PetscViewerFormat*);
199 extern PetscErrorCode  PetscViewerFlush(PetscViewer);
200 
201 /*S
202      PetscViewerASCIIMonitor - Context for the default KSP, SNES and TS monitors that print
203                                   ASCII strings of residual norms etc.
204 
205 
206    Level: advanced
207 
208   Concepts: viewing, monitoring
209 
210 .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, KSPMonitorSet(), SNESMonitorSet(), TSMonitorSet(),
211            KSPMonitorDefault(), SNESMonitorDefault()
212 
213 S*/
214 struct _n_PetscViewerASCIIMonitor {
215   PetscViewer viewer;
216   PetscInt    tabs;
217 };
218 typedef struct _n_PetscViewerASCIIMonitor* PetscViewerASCIIMonitor;
219 
220 extern PetscErrorCode  PetscViewerASCIIMonitorCreate(MPI_Comm,const char *,PetscInt,PetscViewerASCIIMonitor*);
221 extern PetscErrorCode  PetscViewerASCIIMonitorDestroy(PetscViewerASCIIMonitor);
222 extern PetscErrorCode  PetscViewerASCIIMonitorPrintf(PetscViewerASCIIMonitor,const char[],...);
223 
224 /*
225    Operations explicit to a particular class of viewers
226 */
227 
228 extern PetscErrorCode  PetscViewerASCIIGetPointer(PetscViewer,FILE**);
229 extern PetscErrorCode  PetscViewerFileGetMode(PetscViewer,PetscFileMode*);
230 extern PetscErrorCode  PetscViewerFileSetMode(PetscViewer,PetscFileMode);
231 extern PetscErrorCode  PetscViewerASCIIPrintf(PetscViewer,const char[],...);
232 extern PetscErrorCode  PetscViewerASCIISynchronizedPrintf(PetscViewer,const char[],...);
233 extern PetscErrorCode  PetscViewerASCIIPushTab(PetscViewer);
234 extern PetscErrorCode  PetscViewerASCIIPopTab(PetscViewer);
235 extern PetscErrorCode  PetscViewerASCIIUseTabs(PetscViewer,PetscBool );
236 extern PetscErrorCode  PetscViewerASCIISetTab(PetscViewer,PetscInt);
237 extern PetscErrorCode  PetscViewerBinaryGetDescriptor(PetscViewer,int*);
238 extern PetscErrorCode  PetscViewerBinaryGetInfoPointer(PetscViewer,FILE **);
239 extern PetscErrorCode  PetscViewerBinaryRead(PetscViewer,void*,PetscInt,PetscDataType);
240 extern PetscErrorCode  PetscViewerBinaryWrite(PetscViewer,void*,PetscInt,PetscDataType,PetscBool );
241 extern PetscErrorCode  PetscViewerStringSPrintf(PetscViewer,const char[],...);
242 extern PetscErrorCode  PetscViewerStringSetString(PetscViewer,char[],PetscInt);
243 extern PetscErrorCode  PetscViewerDrawClear(PetscViewer);
244 extern PetscErrorCode  PetscViewerDrawSetInfo(PetscViewer,const char[],const char[],int,int,int,int);
245 extern PetscErrorCode  PetscViewerSocketSetConnection(PetscViewer,const char[],int);
246 extern PetscErrorCode  PetscViewerBinarySkipInfo(PetscViewer);
247 extern PetscErrorCode  PetscViewerBinarySetSkipOptions(PetscViewer,PetscBool );
248 extern PetscErrorCode  PetscViewerBinaryGetSkipOptions(PetscViewer,PetscBool *);
249 extern PetscErrorCode  PetscViewerBinarySetSkipHeader(PetscViewer,PetscBool);
250 extern PetscErrorCode  PetscViewerBinaryGetSkipHeader(PetscViewer,PetscBool*);
251 extern PetscErrorCode  PetscViewerBinaryReadStringArray(PetscViewer,char***);
252 extern PetscErrorCode  PetscViewerBinaryWriteStringArray(PetscViewer,char**);
253 
254 extern PetscErrorCode  PetscViewerFileSetName(PetscViewer,const char[]);
255 extern PetscErrorCode  PetscViewerFileGetName(PetscViewer,char**);
256 
257 extern PetscErrorCode  PetscPLAPACKInitializePackage(MPI_Comm com);
258 extern PetscErrorCode  PetscPLAPACKFinalizePackage(void);
259 
260 extern PetscErrorCode  PetscViewerVUGetPointer(PetscViewer, FILE**);
261 extern PetscErrorCode  PetscViewerVUSetVecSeen(PetscViewer, PetscBool );
262 extern PetscErrorCode  PetscViewerVUGetVecSeen(PetscViewer, PetscBool  *);
263 extern PetscErrorCode  PetscViewerVUPrintDeferred(PetscViewer, const char [], ...);
264 extern PetscErrorCode  PetscViewerVUFlushDeferred(PetscViewer);
265 
266 extern PetscErrorCode  PetscViewerMathematicaInitializePackage(const char[]);
267 extern PetscErrorCode  PetscViewerMathematicaFinalizePackage(void);
268 extern PetscErrorCode  PetscViewerMathematicaGetName(PetscViewer, const char **);
269 extern PetscErrorCode  PetscViewerMathematicaSetName(PetscViewer, const char []);
270 extern PetscErrorCode  PetscViewerMathematicaClearName(PetscViewer);
271 extern PetscErrorCode  PetscViewerMathematicaSkipPackets(PetscViewer, int);
272 
273 extern PetscErrorCode  PetscViewerSiloGetName(PetscViewer, char **);
274 extern PetscErrorCode  PetscViewerSiloSetName(PetscViewer, const char []);
275 extern PetscErrorCode  PetscViewerSiloClearName(PetscViewer);
276 extern PetscErrorCode  PetscViewerSiloGetMeshName(PetscViewer, char **);
277 extern PetscErrorCode  PetscViewerSiloSetMeshName(PetscViewer, const char []);
278 extern PetscErrorCode  PetscViewerSiloClearMeshName(PetscViewer);
279 
280 extern PetscErrorCode  PetscViewerNetcdfOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
281 extern PetscErrorCode  PetscViewerNetcdfGetID(PetscViewer, int *);
282 
283 extern PetscErrorCode  PetscViewerHDF5WriteSDS(PetscViewer,float *,int,int *,int);
284 
285 extern PetscErrorCode  PetscViewerHDF5Open(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
286 extern PetscErrorCode  PetscViewerHDF5PushGroup(PetscViewer,const char *);
287 extern PetscErrorCode  PetscViewerHDF5PopGroup(PetscViewer);
288 extern PetscErrorCode  PetscViewerHDF5GetGroup(PetscViewer, const char **);
289 extern PetscErrorCode  PetscViewerHDF5SetTimestep(PetscViewer,PetscInt);
290 extern PetscErrorCode  PetscViewerHDF5GetTimestep(PetscViewer,PetscInt*);
291 #ifdef PETSC_HAVE_HDF5
292 #include <hdf5.h>
293 extern PetscErrorCode  PetscViewerHDF5GetFileId(PetscViewer,hid_t*);
294 extern PetscErrorCode  PetscViewerHDF5OpenGroup(PetscViewer, hid_t *, hid_t *);
295 #endif
296 
297 /*
298      These are all the default viewers that do not have
299    to be explicitly opened
300 */
301 extern PetscViewer  PETSC_VIEWER_STDOUT_(MPI_Comm);
302 extern PetscErrorCode  PetscViewerASCIIGetStdout(MPI_Comm,PetscViewer*);
303 extern PetscViewer  PETSC_VIEWER_STDERR_(MPI_Comm);
304 extern PetscErrorCode  PetscViewerASCIIGetStderr(MPI_Comm,PetscViewer*);
305 extern PetscViewer  PETSC_VIEWER_DRAW_(MPI_Comm);
306 extern PetscViewer  PETSC_VIEWER_SOCKET_(MPI_Comm);
307 extern PetscViewer  PETSC_VIEWER_BINARY_(MPI_Comm);
308 extern PetscViewer  PETSC_VIEWER_MATLAB_(MPI_Comm);
309 extern PetscViewer PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE;
310 
311 #define PETSC_VIEWER_STDERR_SELF  PETSC_VIEWER_STDERR_(PETSC_COMM_SELF)
312 #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD)
313 
314 /*MC
315   PETSC_VIEWER_STDOUT_WORLD  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)
316 
317   Level: beginner
318 M*/
319 #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)
320 
321 /*MC
322   PETSC_VIEWER_STDOUT_SELF  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)
323 
324   Level: beginner
325 M*/
326 #define PETSC_VIEWER_STDOUT_SELF  PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)
327 
328 /*MC
329   PETSC_VIEWER_DRAW_WORLD  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)
330 
331   Level: intermediate
332 M*/
333 #define PETSC_VIEWER_DRAW_WORLD   PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)
334 
335 /*MC
336   PETSC_VIEWER_DRAW_SELF  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)
337 
338   Level: intermediate
339 M*/
340 #define PETSC_VIEWER_DRAW_SELF    PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)
341 
342 /*MC
343   PETSC_VIEWER_SOCKET_WORLD  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)
344 
345   Level: intermediate
346 M*/
347 #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)
348 
349 /*MC
350   PETSC_VIEWER_SOCKET_SELF  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)
351 
352   Level: intermediate
353 M*/
354 #define PETSC_VIEWER_SOCKET_SELF  PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)
355 
356 /*MC
357   PETSC_VIEWER_BINARY_WORLD  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)
358 
359   Level: intermediate
360 M*/
361 #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)
362 
363 /*MC
364   PETSC_VIEWER_BINARY_SELF  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)
365 
366   Level: intermediate
367 M*/
368 #define PETSC_VIEWER_BINARY_SELF  PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)
369 
370 /*MC
371   PETSC_VIEWER_MATLAB_WORLD  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)
372 
373   Level: intermediate
374 M*/
375 #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)
376 
377 /*MC
378   PETSC_VIEWER_MATLAB_SELF  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)
379 
380   Level: intermediate
381 M*/
382 #define PETSC_VIEWER_MATLAB_SELF  PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)
383 
384 #define PETSC_VIEWER_MATHEMATICA_WORLD (PetscViewerInitializeMathematicaWorld_Private(),PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE)
385 
386 #define PetscViewerFlowControlStart(viewer,mcnt,cnt)  (PetscViewerBinaryGetFlowControl(viewer,mcnt) || PetscViewerBinaryGetFlowControl(viewer,cnt))
387 #define PetscViewerFlowControlStepMaster(viewer,i,mcnt,cnt) ((i >= mcnt) ?  (mcnt += cnt,MPI_Bcast(&mcnt,1,MPIU_INT,0,((PetscObject)viewer)->comm)) : 0)
388 #define PetscViewerFlowControlEndMaster(viewer,mcnt) (mcnt = 0,MPI_Bcast(&mcnt,1,MPIU_INT,0,((PetscObject)viewer)->comm))
389 #define PetscViewerFlowControlStepWorker(viewer,rank,mcnt) 0; while (1) { PetscErrorCode _ierr; \
390     if (rank < mcnt) break;				\
391   _ierr = MPI_Bcast(&mcnt,1,MPIU_INT,0,((PetscObject)viewer)->comm);CHKERRQ(_ierr);\
392   }
393 #define PetscViewerFlowControlEndWorker(viewer,mcnt) 0; while (1) { PetscErrorCode _ierr; \
394   _ierr = MPI_Bcast(&mcnt,1,MPIU_INT,0,((PetscObject)viewer)->comm);CHKERRQ(_ierr);\
395     if (mcnt == 0) break;				\
396   }
397 
398 /*
399    petscViewer writes to MATLAB .mat file
400 */
401 extern PetscErrorCode  PetscViewerMatlabPutArray(PetscViewer,int,int,const PetscScalar*,const char*);
402 extern PetscErrorCode  PetscViewerMatlabGetArray(PetscViewer,int,int,PetscScalar*,const char*);
403 extern PetscErrorCode  PetscViewerMatlabPutVariable(PetscViewer,const char*,void*);
404 
405 /*S
406      PetscViewers - Abstract collection of PetscViewers. It is just an expandable array of viewers.
407 
408    Level: intermediate
409 
410   Concepts: viewing
411 
412 .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, PetscViewer, PetscViewersCreate(),
413            PetscViewersGetViewer()
414 S*/
415 typedef struct _n_PetscViewers* PetscViewers;
416 extern PetscErrorCode  PetscViewersCreate(MPI_Comm,PetscViewers*);
417 extern PetscErrorCode  PetscViewersDestroy(PetscViewers);
418 extern PetscErrorCode  PetscViewersGetViewer(PetscViewers,PetscInt,PetscViewer*);
419 
420 #if defined(PETSC_HAVE_AMS)
421 #include <ams.h>
422 extern PetscErrorCode PetscViewerAMSSetCommName(PetscViewer,const char[]);
423 extern PetscErrorCode PetscViewerAMSGetAMSComm(PetscViewer,AMS_Comm *);
424 extern PetscErrorCode PetscViewerAMSOpen(MPI_Comm,const char[],PetscViewer*);
425 extern PetscErrorCode PetscViewerAMSLock(PetscViewer);
426 extern PetscViewer    PETSC_VIEWER_AMS_(MPI_Comm);
427 extern PetscErrorCode PETSC_VIEWER_AMS_Destroy(MPI_Comm);
428 #define PETSC_VIEWER_AMS_WORLD PETSC_VIEWER_AMS_(PETSC_COMM_WORLD)
429 #endif
430 
431 
432 PETSC_EXTERN_CXX_END
433 #endif
434