} s_xbt_swag_t, *xbt_swag_t;
xbt_swag_t xbt_swag_new(size_t offset);
+void xbt_swag_init(xbt_swag_t swag, size_t offset);
void xbt_swag_insert(void *obj,xbt_swag_t swag);
-void xbt_swag_extract(void *obj, xbt_swag_t swag);
+void *xbt_swag_extract(void *obj, xbt_swag_t swag);
int xbt_swag_size(xbt_swag_t swag);
int xbt_swag_belongs(void *obj,xbt_swag_t swag);
#define xbt_swag_getNext(obj,offset) (((xbt_swag_hookup_t)(((char *) (obj)) + (offset)))->prev)
#define xbt_swag_getPrev(obj,offset) (((xbt_swag_hookup_t)(((char *) (obj)) + (offset)))->next)
+#define xbt_swag_offset(var,field) ((char *)&( (var).field ) - (char *)&(var))
#define xbt_swag_foreach(obj,swag) \
for(obj=xbt_swag_getFirst(swag); \
/* This type should be added to a type that is to be used in such a swag */
-#include <stdlib.h>
-#include <stdio.h>
-#include "swag.h"
+#include "xbt/sysdep.h"
+#include "xbt/error.h"
+#include "xbt/swag.h"
#define PREV(obj,offset) xbt_swag_getPrev(obj,offset)
#define NEXT(obj,offset) xbt_swag_getNext(obj,offset)
xbt_swag_t xbt_swag_new(size_t offset)
{
- xbt_swag_t swag = calloc(1, sizeof(s_xbt_swag_t));
+ xbt_swag_t swag = xbt_new0(s_xbt_swag_t,1);
swag->offset = offset;
return swag;
}
+void xbt_swag_init(xbt_swag_t swag, size_t offset)
+{
+ swag->offset = offset;
+}
+
void xbt_swag_insert(void *obj, xbt_swag_t swag)
{
(swag->count)++;
PREV(obj, swag->offset) = swag->tail;
NEXT(PREV(obj, swag->offset), swag->offset) = obj;
-/* new->prev = l->tail; */
-/* new->prev->next = new; */
-
swag->tail = obj;
}
-void xbt_swag_extract(void *obj, xbt_swag_t swag)
+void *xbt_swag_extract(void *obj, xbt_swag_t swag)
{
size_t offset = swag->offset;
+ if (!obj) return NULL;
if (swag->head == swag->tail) { /* special case */
- if (swag->head != obj) {
- fprintf(stderr,
- "Tried to remove an object that was not in this swag\n");
- abort();
- }
+ if (swag->head != obj) /* Trying to remove an object that was not in this swag */
+ return NULL;
swag->head = NULL;
swag->tail = NULL;
- (swag->count)--;
- return;
- }
-
- if (obj == swag->head) { /* It's the head */
+ } else if (obj == swag->head) { /* It's the head */
swag->head = NEXT(obj, offset);
PREV(swag->head, offset) = NULL;
NEXT(obj, offset) = NULL;
PREV(obj, offset) = NEXT(obj, offset) = NULL;
}
(swag->count)--;
+ return obj;
}
int xbt_swag_size(xbt_swag_t swag)