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- #ifndef _LINUX_WAIT_H
- #define _LINUX_WAIT_H
-
- #define WNOHANG 0x00000001
- #define WUNTRACED 0x00000002
-
- #define __WCLONE 0x80000000
-
- #ifdef __KERNEL__
-
- #include <asm/page.h>
-
- struct wait_queue {
- struct task_struct * task;
- struct wait_queue * next;
- };
-
- #define WAIT_QUEUE_HEAD(x) ((struct wait_queue *)((x)-1))
-
- static inline void init_waitqueue(struct wait_queue **q)
- {
- *q = WAIT_QUEUE_HEAD(q);
- }
-
- static inline int waitqueue_active(struct wait_queue **q)
- {
- struct wait_queue *head = *q;
- return head && head != WAIT_QUEUE_HEAD(q);
- }
-
- #endif /* __KERNEL__ */
-
- #endif
-