PetscViewerBinaryGetDescriptor

Extracts the file descriptor from a PetscViewer of PetscViewerType PETSCVIEWERBINARY.

Synopsis

#include "petscviewer.h"   
PetscErrorCode PetscViewerBinaryGetDescriptor(PetscViewer viewer, int *fdes)

Collective because it may trigger a PetscViewerSetUp() call; No Fortran Support

Input Parameter

• viewer - PetscViewer context, obtained from PetscViewerBinaryOpen()

Output Parameter

• fdes - file descriptor

Note

For writable binary PetscViewers, the descriptor will only be valid for the first processor in the communicator that shares the PetscViewer. For readable files it will only be valid on processes that have the file. If MPI rank 0 does not have the file it generates an error even if another MPI process does have the file.

See Also

Viewers: Looking at PETSc Objects, PETSCVIEWERBINARY, PetscViewerBinaryOpen(), PetscViewerBinaryGetInfoPointer()

Level

advanced

Location

src/sys/classes/viewer/impls/binary/binv.c

Examples

src/vec/vec/tutorials/ex6f.F90
src/vec/vec/tutorials/ex6.c

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Index of all Viewer routines
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Index of all manual pages