include/linux/completion.h

   1 #ifndef __LINUX_COMPLETION_H
   2 #define __LINUX_COMPLETION_H
   3
   4 /*
   5  * (C) Copyright 2001 Linus Torvalds
   6  *
   7  * Atomic wait-for-completion handler data structures.
   8  * See kernel/sched.c for details.
   9  */
  10
  11 #include <linux/wait.h>
  12
  13 struct completion {
  14         unsigned int done;
  15         wait_queue_head_t wait;
  16 };
  17
  18 #define COMPLETION_INITIALIZER(work) \
  19         { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
  20
  21 #define DECLARE_COMPLETION(work) \
  22         struct completion work = COMPLETION_INITIALIZER(work)
  23
  24 static inline void init_completion(struct completion *x)
  25 {
  26         x->done = 0;
  27         init_waitqueue_head(&x->wait);
  28 }
  29
  30 extern void FASTCALL(wait_for_completion(struct completion *));
  31 extern int FASTCALL(wait_for_completion_interruptible(struct completion *x));
  32 extern unsigned long FASTCALL(wait_for_completion_timeout(struct completion *x,
  33                                                    unsigned long timeout));
  34 extern unsigned long FASTCALL(wait_for_completion_interruptible_timeout(
  35                         struct completion *x, unsigned long timeout));
  36
  37 extern void FASTCALL(complete(struct completion *));
  38 extern void FASTCALL(complete_all(struct completion *));
  39
  40 #define INIT_COMPLETION(x)      ((x).done = 0)
  41
  42 #endif