You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
1.6 KiB
87 lines
1.6 KiB
#ifndef __IQUEUE_H__
|
|
#define __IQUEUE_H__
|
|
|
|
|
|
#include <stddef.h>
|
|
|
|
|
|
#define IQUEUE_LINK \
|
|
struct { \
|
|
void *prev; \
|
|
void *next; \
|
|
}
|
|
|
|
|
|
#define IQUEUE_TYPE(ele_type, link_name) \
|
|
struct { \
|
|
union { \
|
|
struct { \
|
|
ele_type *head; \
|
|
ele_type *tail; \
|
|
unsigned int length; \
|
|
}; \
|
|
struct { \
|
|
char dummy[offsetof(ele_type, link_name)]; \
|
|
struct { \
|
|
ele_type *prev; \
|
|
ele_type *next; \
|
|
} link; \
|
|
} *offset; \
|
|
}; \
|
|
}
|
|
|
|
|
|
#define IQUEUE(ele_type, link_name, queue_name) \
|
|
IQUEUE_TYPE(ele_type, link_name) queue_name
|
|
|
|
|
|
#define i_queue_init(list) do { \
|
|
(list)->head = NULL; \
|
|
(list)->tail = NULL; \
|
|
(list)->length = 0; \
|
|
} while (0)
|
|
|
|
|
|
#define IQUEUE_INIT { 0 }
|
|
|
|
|
|
#define i_queue_peek_head(list) ({ \
|
|
__auto_type __ret = (list)->head; \
|
|
__ret; \
|
|
})
|
|
|
|
|
|
#define i_queue_pop_head(list) ({ \
|
|
__auto_type __ret = (list)->head; \
|
|
if (__ret) { \
|
|
__auto_type __link = (__typeof((list)->offset)) __ret; \
|
|
(list)->head = __link->link.next; \
|
|
__link->link.next = NULL; \
|
|
(list)->length--; \
|
|
if (!(list)->head) \
|
|
(list)->tail = NULL; \
|
|
} \
|
|
__ret; \
|
|
})
|
|
|
|
|
|
#define i_queue_push_tail(list, ele) do { \
|
|
if ((list)->tail) { \
|
|
__auto_type __link = (__typeof((list)->offset)) (list)->tail; \
|
|
__link->link.next = ele; \
|
|
} \
|
|
__auto_type __link = (__typeof((list)->offset)) ele; \
|
|
__link->link.prev = (list)->tail; \
|
|
(list)->tail = ele; \
|
|
if (!(list)->head) \
|
|
(list)->head = ele; \
|
|
(list)->length++; \
|
|
} while (0)
|
|
|
|
|
|
#define IQUEUE_FOREACH(list, var) \
|
|
for (__typeof__ ( ({ __typeof__ (*(list)->head) __t; &__t; }) ) var = (list)->head; \
|
|
var; var = ((__typeof((list)->offset)) var)->link.next)
|
|
|
|
|
|
#endif
|