Actual source code: viewreg.c
1: #define PETSC_DLL
3: #include "src/sys/viewer/viewerimpl.h" /*I "petsc.h" I*/
5: PetscFList PetscViewerList = 0;
9: /*@C
10: PetscViewerCreate - Creates a viewing context
12: Collective on MPI_Comm
14: Input Parameter:
15: . comm - MPI communicator
17: Output Parameter:
18: . inviewer - location to put the PetscViewer context
20: Level: advanced
22: Concepts: graphics^creating PetscViewer
23: Concepts: file input/output^creating PetscViewer
24: Concepts: sockets^creating PetscViewer
26: .seealso: PetscViewerDestroy(), PetscViewerSetType()
28: @*/
29: PetscErrorCode PETSC_DLLEXPORT PetscViewerCreate(MPI_Comm comm,PetscViewer *inviewer)
30: {
31: PetscViewer viewer;
35: *inviewer = 0;
36: #if !defined(PETSC_USE_DYNAMIC_LIBRARIES)
37: PetscInitializePackage(PETSC_NULL);
38: #endif
39: PetscHeaderCreate(viewer,_p_PetscViewer,struct _PetscViewerOps,PETSC_VIEWER_COOKIE,-1,"PetscViewer",comm,PetscViewerDestroy,0);
40: *inviewer = viewer;
41: viewer->data = 0;
42: return(0);
43: }
44:
47: /*@C
48: PetscViewerSetType - Builds PetscViewer for a particular implementation.
50: Collective on PetscViewer
52: Input Parameter:
53: + viewer - the PetscViewer context
54: - type - for example, "ASCII"
56: Options Database Command:
57: . -draw_type <type> - Sets the type; use -help for a list
58: of available methods (for instance, ascii)
60: Level: advanced
62: Notes:
63: See "include/petscviewer.h" for available methods (for instance,
64: PETSC_VIEWER_SOCKET)
66: .seealso: PetscViewerCreate(), PetscViewerGetType()
67: @*/
68: PetscErrorCode PETSC_DLLEXPORT PetscViewerSetType(PetscViewer viewer,PetscViewerType type)
69: {
70: PetscErrorCode ierr,(*r)(PetscViewer);
71: PetscTruth match;
77: PetscTypeCompare((PetscObject)viewer,type,&match);
78: if (match) return(0);
80: if (viewer->data) {
81: /* destroy the old private PetscViewer context */
82: (*viewer->ops->destroy)(viewer);
83: viewer->data = 0;
84: }
85: /* Get the function pointers for the graphics method requested */
86: if (!PetscViewerList) {
87: PetscViewerRegisterAll(PETSC_NULL);
88: }
90: PetscFListFind(viewer->comm,PetscViewerList,type,(void (**)(void)) &r);
91: if (!r) SETERRQ1(PETSC_ERR_ARG_UNKNOWN_TYPE,"Unknown PetscViewer type given: %s",type);
92: viewer->data = 0;
93: PetscMemzero(viewer->ops,sizeof(struct _PetscViewerOps));
94: (*r)(viewer);
95: PetscObjectChangeTypeName((PetscObject)viewer,type);
96: return(0);
97: }
101: /*@C
102: PetscViewerRegisterDestroy - Frees the list of PetscViewer methods that were
103: registered by PetscViewerRegisterDynamic().
105: Not Collective
107: Level: developer
109: .seealso: PetscViewerRegisterDynamic(), PetscViewerRegisterAll()
110: @*/
111: PetscErrorCode PETSC_DLLEXPORT PetscViewerRegisterDestroy(void)
112: {
116: if (PetscViewerList) {
117: PetscFListDestroy(&PetscViewerList);
118: PetscViewerList = 0;
119: }
120: return(0);
121: }
125: PetscErrorCode PETSC_DLLEXPORT PetscViewerRegister(const char *sname,const char *path,const char *name,PetscErrorCode (*function)(PetscViewer))
126: {
128: char fullname[PETSC_MAX_PATH_LEN];
131: PetscFListConcat(path,name,fullname);
132: PetscFListAdd(&PetscViewerList,sname,fullname,(void (*)(void))function);
133: return(0);
134: }
138: /*@C
139: PetscViewerSetFromOptions - Sets the graphics type from the options database.
140: Defaults to a PETSc X windows graphics.
142: Collective on PetscViewer
144: Input Parameter:
145: . PetscViewer - the graphics context
147: Level: intermediate
149: Notes:
150: Must be called after PetscViewerCreate() before the PetscViewer is used.
152: Concepts: PetscViewer^setting options
154: .seealso: PetscViewerCreate(), PetscViewerSetType()
156: @*/
157: PetscErrorCode PETSC_DLLEXPORT PetscViewerSetFromOptions(PetscViewer viewer)
158: {
160: char vtype[256];
161: PetscTruth flg;
166: if (!PetscViewerList) {
167: PetscViewerRegisterAll(PETSC_NULL);
168: }
169: PetscOptionsBegin(viewer->comm,viewer->prefix,"PetscViewer options","PetscViewer");
170: PetscOptionsList("-viewer_type","Type of PetscViewer","None",PetscViewerList,(char *)(viewer->type_name?viewer->type_name:PETSC_VIEWER_ASCII),vtype,256,&flg);
171: if (flg) {
172: PetscViewerSetType(viewer,vtype);
173: }
174: /* type has not been set? */
175: if (!viewer->type_name) {
176: PetscViewerSetType(viewer,PETSC_VIEWER_ASCII);
177: }
178: if (viewer->ops->setfromoptions) {
179: (*viewer->ops->setfromoptions)(viewer);
180: }
181: PetscOptionsEnd();
183: return(0);
184: }