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Include/linux/wait.h


18650 #ifndef _LINUX_WAIT_H 18651 #define _LINUX_WAIT_H 18652 18653 #define WNOHANG 0x00000001 18654 #define WUNTRACED 0x00000002 18655 18656 #define __WCLONE 0x80000000 18657 18658 #ifdef __KERNEL__ 18659 18660 #include <asm/page.h> 18661

18662 struct wait_queue { 18663 struct task_struct * task; 18664 struct wait_queue * next; 18665 }; 18666 18667 #define WAIT_QUEUE_HEAD(x) ((struct wait_queue *)((x)-1)) 18668 18669 static inline void init_waitqueue(struct wait_queue **q) 18670 { 18671 *q = WAIT_QUEUE_HEAD(q); 18672 } 18673 18674 static inline int waitqueue_active(struct wait_queue **q) 18675 { 18676 struct wait_queue *head = *q; 18677 return head && head != WAIT_QUEUE_HEAD(q); 18678 } 18679 18680 #endif /* __KERNEL__ */ 18681 18682 #endif




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