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_free(xbt_swag_t swag);
30 void xbt_swag_init(xbt_swag_t swag, size_t offset);
31 void xbt_swag_insert(void *obj, xbt_swag_t swag);
32 void *xbt_swag_remove(void *obj, xbt_swag_t swag);
33 void *xbt_swag_extract(xbt_swag_t swag);
34 int xbt_swag_size(xbt_swag_t swag);
35 int xbt_swag_belongs(void *obj, xbt_swag_t swag);
37 static __inline__ void *xbt_swag_getFirst(xbt_swag_t swag)
42 #define xbt_swag_getNext(obj,offset) (((xbt_swag_hookup_t)(((char *) (obj)) + (offset)))->prev)
43 #define xbt_swag_getPrev(obj,offset) (((xbt_swag_hookup_t)(((char *) (obj)) + (offset)))->next)
45 #define xbt_swag_offset(var,field) ((char *)&( (var).field ) - (char *)&(var))
47 #define xbt_swag_foreach(obj,swag) \
48 for((obj)=xbt_swag_getFirst((swag)); \
50 (obj)=xbt_swag_getNext((obj),(swag)->offset))
52 #define xbt_swag_foreach_safe(obj,obj_next,swag) \
53 for((obj)=xbt_swag_getFirst((swag)), \
54 ((obj)?(obj_next=xbt_swag_getNext((obj),(swag)->offset)): \
58 ((obj)?(obj_next=xbt_swag_getNext((obj),(swag)->offset)): \