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Add list_iterate that's safe with deletions.

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This commit is contained in:
Alasdair Kergon 2002-01-29 16:28:52 +00:00
parent cd7018fd2c
commit 2f069a65d0
2 changed files with 8 additions and 2 deletions
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5
lib/datastruct/list.h
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@ -47,7 +47,10 @@ static inline int list_empty(struct list *head) {
} }
#define list_iterate(v, head) \ #define list_iterate(v, head) \
for (v = (head)->n; v != head; v = v->n) for (v = (head)->n; v != head; v = v->n)
#define list_iterate_safe(v, t, head) \
for (v = (head)->n, t = v->n; v != head; v = t, t = v->n)
static inline int list_size(struct list *head) { static inline int list_size(struct list *head) {
int s = 0; int s = 0;

5
libdm/datastruct/list.h
View File

@ -47,7 +47,10 @@ static inline int list_empty(struct list *head) {
} }
#define list_iterate(v, head) \ #define list_iterate(v, head) \
for (v = (head)->n; v != head; v = v->n) for (v = (head)->n; v != head; v = v->n)
#define list_iterate_safe(v, t, head) \
for (v = (head)->n, t = v->n; v != head; v = t, t = v->n)
static inline int list_size(struct list *head) { static inline int list_size(struct list *head) {
int s = 0; int s = 0;