union control **ctrls; /* actual array */
};
+typedef void (*ctrl_freefn_t)(void *); /* used by ctrl_alloc_with_free */
+
/*
* This is the container structure which holds a complete set of
* controls.
int nfrees;
int freesize;
void **frees; /* array of aux data areas to free */
+ ctrl_freefn_t *freefuncs; /* parallel array of free functions */
};
struct controlbox *ctrl_new_box(void);
* and so data allocated through this function is better not used
* to hold modifiable per-instance things. It's mostly here for
* allocating structures to be passed as control handler params.
+ *
+ * ctrl_alloc_with_free also allows you to provide a function to free
+ * the structure, in case there are other dynamically allocated bits
+ * and pieces dangling off it.
*/
void *ctrl_alloc(struct controlbox *b, size_t size);
+void *ctrl_alloc_with_free(struct controlbox *b, size_t size,
+ ctrl_freefn_t freefunc);
/*
* Individual routines to create `union control' structures in a controlset.