25 lines
503 B
C
25 lines
503 B
C
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#include <stdlib.h>
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#include "list.h"
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void list_head_init(struct list_head *head) {
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head->next = head->prev = head;
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}
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bool list_is_empty(const struct list_head *head) {
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return head->next == head;
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}
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void list_add(struct list_head *new, struct list_head *head) {
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new->next = head;
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new->prev = head->prev;
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new->prev->next = new;
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head->prev = new;
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}
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void list_del(struct list_head *entry) {
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entry->next->prev = entry->prev;
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entry->prev->next = entry->next;
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entry->prev = entry->next = NULL;
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}
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