PETSc version 3.17.5

PetscObjectSAWsTakeAccess

Take access of the data fields that have been published to SAWs so they may be changed locally

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

Collective on PetscObject

obj

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

advanced