petsc-3.10.5 2019-03-28
PetscObjectDereference
Indicates to any PetscObject that it is being referenced by one less PetscObject. This decreases the reference count for that object by one.
Synopsis
#include "petscsys.h"
PetscErrorCode PetscObjectDereference(PetscObject obj)
Collective on PetscObject if reference reaches 0 otherwise Logically Collective
Input Parameter
obj -the PETSc object; this must be cast with (PetscObject), for example,
PetscObjectDereference((PetscObject)mat);
Notes
PetscObjectDestroy(PetscObject *obj) sets the obj pointer to null after the call, this routine does not.
See Also
PetscObjectCompose(), PetscObjectReference()
Level
advanced
Location
src/sys/objects/inherit.c
Index of all Sys routines
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Index of all manual pages