mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-13 22:58:42 +00:00
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
|
|
* BIRD Library -- Generic Buffer Structure
|
|
*
|
|
* (c) 2013 Ondrej Zajicek <santiago@crfreenet.org>
|
|
* (c) 2013 CZ.NIC z.s.p.o.
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_BUFFER_H_
|
|
#define _BIRD_BUFFER_H_
|
|
|
|
#include "lib/resource.h"
|
|
#include "sysdep/config.h"
|
|
|
|
#define BUFFER(type) struct { type *data; uint used, size; }
|
|
|
|
#define BUFFER_SIZE(v) ((v).size * sizeof(* (v).data))
|
|
|
|
#define BUFFER_INIT(v,pool,isize) \
|
|
({ \
|
|
(v).used = 0; \
|
|
(v).size = (isize); \
|
|
(v).data = mb_alloc(pool, BUFFER_SIZE(v)); \
|
|
})
|
|
|
|
#define BUFFER_SET(v,nsize) \
|
|
({ \
|
|
(v).used = (nsize); \
|
|
if ((v).used > (v).size) \
|
|
buffer_realloc((void **) &((v).data), &((v).size), (v).used, sizeof(* (v).data)); \
|
|
})
|
|
|
|
#define BUFFER_INC(v,step) \
|
|
({ \
|
|
uint _o = (v).used; \
|
|
BUFFER_SET(v, (v).used + (step)); \
|
|
(v).data + _o; \
|
|
})
|
|
|
|
#define BUFFER_DEC(v,step) ({ (v).used -= (step); })
|
|
|
|
#define BUFFER_PUSH(v) (*BUFFER_INC(v,1))
|
|
|
|
#define BUFFER_POP(v) BUFFER_DEC(v,1)
|
|
|
|
#define BUFFER_FLUSH(v) ({ (v).used = 0; })
|
|
|
|
#endif /* _BIRD_BUFFER_H_ */
|