52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
#ifndef SOCKS_QUEUE_H_
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#define SOCKS_QUEUE_H_
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#include <string.h>
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#define QUEUE_CONTAINER(t, m, v) ((void *)((v) ? (uintptr_t)(v) - (offsetof(t, m)) : 0))
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#define QUEUE_INIT ((queue_t){ .q_first = NULL, .q_last = NULL, .q_length = 0})
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#define queue_foreach(iter_type, iter_name, queue_name, node_member) \
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for (iter_type *iter_name = QUEUE_CONTAINER(iter_type, node_member, queue_first(queue_name)); \
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iter_name; \
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iter_name = QUEUE_CONTAINER(iter_type, node_member, queue_next(&((iter_name)->node_member))))
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#define queue_foreach_r(iter_type, iter_name, queue_name, node_member) \
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for (iter_type *iter_name = QUEUE_CONTAINER(iter_type, node_member, queue_last(queue_name)); \
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iter_name; \
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iter_name = QUEUE_CONTAINER(iter_type, node_member, queue_prev(&((iter_name)->node_member))))
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typedef struct queue_entry {
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struct queue_entry *qe_next;
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struct queue_entry *qe_prev;
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} queue_entry_t;
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typedef struct queue {
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queue_entry_t *q_first;
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queue_entry_t *q_last;
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unsigned int q_length;
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} queue_t;
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static inline void queue_init(queue_t *q) { memset(q, 0x00, sizeof *q); }
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static inline unsigned int queue_length(queue_t *q) { return q->q_length; }
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static inline queue_entry_t *queue_first(queue_t *q) { return q->q_first; }
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static inline queue_entry_t *queue_last(queue_t *q) { return q->q_last; }
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static inline queue_entry_t *queue_next(queue_entry_t *entry) { return entry->qe_next; }
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static inline queue_entry_t *queue_prev(queue_entry_t *entry) { return entry->qe_prev; }
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extern void queue_insert_before(queue_t *q, queue_entry_t *entry, queue_entry_t *before);
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extern void queue_insert_after(queue_t *q, queue_entry_t *entry, queue_entry_t *after);
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extern void queue_push_front(queue_t *q, queue_entry_t *entry);
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extern void queue_push_back(queue_t *q, queue_entry_t *entry);
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extern queue_entry_t *queue_pop_front(queue_t *q);
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extern queue_entry_t *queue_pop_back(queue_t *q);
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extern void queue_delete(queue_t *q, queue_entry_t *entry);
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extern void queue_delete_all(queue_t *q);
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#endif
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