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#

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

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Index of all Viewer routines
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Index of all manual pages