DMGetWorkArray

Gets a work array guaranteed to be at least the input size, restore with DMRestoreWorkArray()

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMGetWorkArray(DM dm, PetscInt count, MPI_Datatype dtype, void *mem)

Not Collective

Input Parameters

• dm - the DM object

• count - The minimum size

• dtype - MPI data type, often MPIU_REAL, MPIU_SCALAR, or MPIU_INT)

Output Parameter

• mem - the work array

Notes

A DM may stash the array between instantiations so using this routine may be more efficient than calling PetscMalloc()

The array may contain nonzero values

See Also

DM Basics, DM, DMDestroy(), DMCreate(), DMRestoreWorkArray(), PetscMalloc()

Level

developer

Location

src/dm/interface/dm.c

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Index of all DM routines
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Index of all manual pages