petsc-3.7.7 2017-09-25

DMRefineHookAdd

adds a callback to be run when interpolating a nonlinear problem to a finer grid

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
PetscErrorCode DMRefineHookAdd(DM coarse,PetscErrorCode (*refinehook)(DM,DM,void*),PetscErrorCode (*interphook)(DM,Mat,DM,void*),void *ctx)

Logically Collective

Input Arguments

	coarse	- nonlinear solver context on which to run a hook when restricting to a coarser level
	refinehook	- function to run when setting up a coarser level
	interphook	- function to run to update data on finer levels (once per SNESSolve())
	ctx	- [optional] user-defined context for provide data for the hooks (may be NULL)

Calling sequence of refinehook

   refinehook(DM coarse,DM fine,void *ctx);

	coarse	- coarse level DM
	fine	- fine level DM to interpolate problem to
	ctx	- optional user-defined function context

Calling sequence for interphook

   interphook(DM coarse,Mat interp,DM fine,void *ctx)

	coarse	- coarse level DM
	interp	- matrix interpolating a coarse-level solution to the finer grid
	fine	- fine level DM to update
	ctx	- optional user-defined function context

Notes

This function is only needed if auxiliary data needs to be passed to fine grids while grid sequencing

If this function is called multiple times, the hooks will be run in the order they are added.

This function is currently not available from Fortran.

Examples

src/snes/examples/tutorials/ex48.c.html