petsc-3.6.1 2015-08-06

PetscObjectSAWsBlock

Blocks the object if PetscObjectSAWsSetBlock() has been called

#include "petscsys.h"   
PetscErrorCode  PetscObjectSAWsBlock(PetscObject obj)

Collective on PetscObject

obj -the Petsc variable Thus must be cast with a (PetscObject), for example, PetscObjectSetName((PetscObject)mat,name);