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#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include "til_setup.h"
/* Allocate and initialize a new til_setup_t of size bytes.
* free_func is assigned to til_setup_t.free, and will be used for freeing the
* instance returned when destroyed.
*
* Note this returns void * despite creating a til_setup_t, this is for convenience
* as the callers are generally using it in place of calloc(), and assign it to a
* container struct of some other type but having an embedded til_setup_t.
*/
void * til_setup_new(size_t size, void (*free_func)(til_setup_t *setup))
{
til_setup_t *setup;
assert(size >= sizeof(til_setup_t));
assert(free_func);
setup = calloc(1, size);
if (!setup)
return NULL;
setup->free = free_func;
return setup;
}
/* Free the setup when non-NULL, using setup->free if non-NULL.
* Always returns NULL for uses like foo = til_setup_free(foo);
*/
void * til_setup_free(til_setup_t *setup)
{
if (!setup)
return NULL;
if (setup->free)
setup->free(setup);
return NULL;
}
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