| /* |
| * This file is not copyrighted. |
| */ |
| |
| #ifndef _WSBM_UTIL_H_ |
| #define _WSBM_UTIL_H_ |
| |
| #include <stddef.h> |
| |
| #ifndef containerOf |
| #define containerOf(__item, __type, __field) \ |
| ((__type *)(((char *) (__item)) - offsetof(__type, __field))) |
| #endif |
| |
| struct _WsbmListHead |
| { |
| struct _WsbmListHead *prev; |
| struct _WsbmListHead *next; |
| }; |
| |
| #define WSBMINITLISTHEAD(__item) \ |
| do{ \ |
| (__item)->prev = (__item); \ |
| (__item)->next = (__item); \ |
| } while (0) |
| |
| #define WSBMLISTADD(__item, __list) \ |
| do { \ |
| (__item)->prev = (__list); \ |
| (__item)->next = (__list)->next; \ |
| (__list)->next->prev = (__item); \ |
| (__list)->next = (__item); \ |
| } while (0) |
| |
| #define WSBMLISTADDTAIL(__item, __list) \ |
| do { \ |
| (__item)->next = (__list); \ |
| (__item)->prev = (__list)->prev; \ |
| (__list)->prev->next = (__item); \ |
| (__list)->prev = (__item); \ |
| } while(0) |
| |
| #define WSBMLISTDEL(__item) \ |
| do { \ |
| (__item)->prev->next = (__item)->next; \ |
| (__item)->next->prev = (__item)->prev; \ |
| } while(0) |
| |
| #define WSBMLISTDELINIT(__item) \ |
| do { \ |
| (__item)->prev->next = (__item)->next; \ |
| (__item)->next->prev = (__item)->prev; \ |
| (__item)->next = (__item); \ |
| (__item)->prev = (__item); \ |
| } while(0) |
| |
| #define WSBMLISTFOREACH(__item, __list) \ |
| for((__item) = (__list)->next; (__item) != (__list); (__item) = (__item)->next) |
| |
| #define WSBMLISTFOREACHPREV(__item, __list) \ |
| for((__item) = (__list)->prev; (__item) != (__list); (__item) = (__item)->prev) |
| |
| #define WSBMLISTFOREACHSAFE(__item, __next, __list) \ |
| for((__item) = (__list)->next, (__next) = (__item)->next; \ |
| (__item) != (__list); \ |
| (__item) = (__next), (__next) = (__item)->next) |
| |
| #define WSBMLISTFOREACHPREVSAFE(__item, __prev, __list) \ |
| for((__item) = (__list)->prev, (__prev) = (__item->prev); \ |
| (__item) != (__list); \ |
| (__item) = (__prev), (__prev) = (__item)->prev) |
| |
| #define WSBMLISTENTRY(__item, __type, __field) \ |
| containerOf(__item, __type, __field) |
| |
| #endif |