131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
|
|
/*
|
|
* Copyright (C) Igor Sysoev
|
|
* Copyright (C) NGINX, Inc.
|
|
*/
|
|
|
|
#ifndef _NXT_LIST_H_INCLUDED_
|
|
#define _NXT_LIST_H_INCLUDED_
|
|
|
|
|
|
typedef struct nxt_list_part_s nxt_list_part_t;
|
|
|
|
struct nxt_list_part_s {
|
|
nxt_list_part_t *next;
|
|
uintptr_t nelts;
|
|
};
|
|
|
|
|
|
typedef struct {
|
|
nxt_list_part_t *last;
|
|
#if (NXT_64BIT)
|
|
uint32_t size;
|
|
uint32_t nalloc;
|
|
#else
|
|
uint16_t size;
|
|
uint16_t nalloc;
|
|
#endif
|
|
nxt_mp_t *mem_pool;
|
|
nxt_list_part_t part;
|
|
} nxt_list_t;
|
|
|
|
|
|
typedef struct {
|
|
nxt_list_part_t *part;
|
|
uintptr_t elt;
|
|
} nxt_list_next_t;
|
|
|
|
|
|
#define \
|
|
nxt_list_part(list) \
|
|
(&(list)->part)
|
|
|
|
|
|
#define \
|
|
nxt_list_data(part) \
|
|
((char *) (part) + sizeof(nxt_list_part_t))
|
|
|
|
|
|
#define \
|
|
nxt_list_first(list) \
|
|
(void *) nxt_list_data(nxt_list_part(list))
|
|
|
|
|
|
nxt_inline void *
|
|
nxt_list_elt(nxt_list_t *list, nxt_uint_t n)
|
|
{
|
|
nxt_list_part_t *part;
|
|
|
|
if (nxt_fast_path((list) != NULL)) {
|
|
part = nxt_list_part(list);
|
|
|
|
while (part != NULL) {
|
|
if (n < (nxt_uint_t) part->nelts) {
|
|
return ((void *) (nxt_list_data(part) + n * (list)->size));
|
|
}
|
|
|
|
n -= (nxt_uint_t) part->nelts;
|
|
part = part->next;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
#define nxt_list_each(elt, list) \
|
|
do { \
|
|
if (nxt_fast_path((list) != NULL)) { \
|
|
void *_end; \
|
|
nxt_list_part_t *_part = nxt_list_part(list); \
|
|
\
|
|
do { \
|
|
elt = (void *) nxt_list_data(_part); \
|
|
\
|
|
for (_end = (elt + _part->nelts); elt != _end; elt++) { \
|
|
|
|
#define nxt_list_loop \
|
|
} \
|
|
\
|
|
_part = _part->next; \
|
|
\
|
|
} while (_part != NULL); \
|
|
} \
|
|
} while (0)
|
|
|
|
|
|
NXT_EXPORT nxt_list_t *nxt_list_create(nxt_mp_t *mp, nxt_uint_t n, size_t size);
|
|
NXT_EXPORT void *nxt_list_add(nxt_list_t *list);
|
|
NXT_EXPORT void *nxt_list_zero_add(nxt_list_t *list);
|
|
|
|
NXT_EXPORT void *nxt_list_next(nxt_list_t *list, nxt_list_next_t *next);
|
|
|
|
|
|
#define \
|
|
nxt_list_next_value(list, next) \
|
|
((void *) (nxt_list_data((next)->part) + (next)->elt * (list)->size))
|
|
|
|
|
|
nxt_inline nxt_uint_t
|
|
nxt_list_nelts(nxt_list_t *list)
|
|
{
|
|
nxt_uint_t n;
|
|
nxt_list_part_t *part;
|
|
|
|
n = 0;
|
|
|
|
if (nxt_fast_path((list) != NULL)) {
|
|
part = nxt_list_part(list);
|
|
|
|
do {
|
|
n += (nxt_uint_t) part->nelts;
|
|
part = part->next;
|
|
} while (part != NULL);
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
|
|
#endif /* _NXT_LIST_H_INCLUDED_ */
|