PetscCtxDestroyFn

A prototype of a PetscErrorCode (*)(void **) function that is used to free user contexts

Synopsis

PETSC_EXTERN_TYPEDEF typedef PetscErrorCode PetscCtxDestroyFn(void **);

Notes

Used in the prototype of functions such as DMSetApplicationContextDestroy()

The function argument is a void ** meaning that this function is called with a pointer to the application context (which is itself a pointer) thus the destroy implementation must first reference the context via, for example, *(AppCtx **)arg

See Also

PetscObject, PetscCtxDestroyDefault(), PetscObjectDestroy(), DMSetApplicationContextDestroy()

Level

intermediate

Location

include/petscsys.h

Examples

src/ksp/ksp/tutorials/ex65.c

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