1 /** 2 @file 3 util.h 4 5 @brief 6 This file provides the definitions, and declares some common APIs for list-algorithm. 7 8 */ 9 10 #ifndef _UTILS_H_ 11 #define _UTILS_H_ 12 13 #include <stddef.h> 14 #include <glob.h> 15 16 struct listnode 17 { 18 struct listnode *next; 19 struct listnode *prev; 20 }; 21 22 #define node_to_item(node, container, member) \ 23 (container *) (((char*) (node)) - offsetof(container, member)) 24 25 #define list_declare(name) \ 26 struct listnode name = { \ 27 .next = &name, \ 28 .prev = &name, \ 29 } 30 31 #define list_for_each(node, list) \ 32 for (node = (list)->next; node != (list); node = node->next) 33 34 #define list_for_each_reverse(node, list) \ 35 for (node = (list)->prev; node != (list); node = node->prev) 36 37 void list_init(struct listnode *list); 38 void list_add_tail(struct listnode *list, struct listnode *item); 39 void list_add_head(struct listnode *head, struct listnode *item); 40 void list_remove(struct listnode *item); 41 42 #define list_empty(list) ((list) == (list)->next) 43 #define list_head(list) ((list)->next) 44 #define list_tail(list) ((list)->prev) 45 46 int epoll_register(int epoll_fd, int fd, unsigned int events); 47 int epoll_deregister(int epoll_fd, int fd); 48 const char * get_time(void); 49 unsigned long clock_msec(void); 50 pid_t getpid_by_pdp(int, const char*); 51 52 #endif 53