# PetscSetMalloc

Sets the routines used to do mallocs and frees. This routine MUST be called before PetscInitialize() and may be called only once.

### Synopsis

    #include "petsc.h"
    PetscErrorCode  PetscSetMalloc(PetscErrorCode (*imalloc)(size_t,int,const char[],const char[],const char[],void**),
                                                  PetscErrorCode (*ifree)(void*,int,const char[],const char[],const char[]))

Not Collective

### Input Parameters

| malloc | - the malloc routine
| free | - the free routine

Level:developer
Location:src/sys/memory/mal.c
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