1 /* Authors: Arnaud Legrand */
3 /* This program is free software; you can redistribute it and/or modify it
4 under the terms of the license (GNU LGPL) which comes with this package. */
6 /* Warning, this module is done to be efficient and performs tons of
7 cast and dirty things. So avoid using it unless you really know
10 /* This type should be added to a type that is to be used in such a swag */
11 /* Whenever a new object with this struct is created, all fields have
14 #include "xbt/sysdep.h"
16 typedef struct xbt_swag_hookup {
19 } s_xbt_swag_hookup_t, *xbt_swag_hookup_t;
21 typedef struct xbt_swag {
26 } s_xbt_swag_t, *xbt_swag_t;
28 xbt_swag_t xbt_swag_new(size_t offset);
29 void xbt_swag_init(xbt_swag_t swag, size_t offset);
30 void xbt_swag_insert(void *obj, xbt_swag_t swag);
31 void *xbt_swag_extract(void *obj, xbt_swag_t swag);
32 int xbt_swag_size(xbt_swag_t swag);
33 int xbt_swag_belongs(void *obj, xbt_swag_t swag);
35 static __inline__ void *xbt_swag_getFirst(xbt_swag_t swag)
40 #define xbt_swag_getNext(obj,offset) (((xbt_swag_hookup_t)(((char *) (obj)) + (offset)))->prev)
41 #define xbt_swag_getPrev(obj,offset) (((xbt_swag_hookup_t)(((char *) (obj)) + (offset)))->next)
43 #define xbt_swag_offset(var,field) ((char *)&( (var).field ) - (char *)&(var))
45 #define xbt_swag_foreach(obj,swag) \
46 for((obj)=xbt_swag_getFirst((swag)); \
48 (obj)=xbt_swag_getNext((obj),(swag)->offset))