Linux kernel mirror (for testing)
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linux
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
13struct 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/*
25 * Lockdep needs to run a non-constant initializer for on-stack
26 * completions - so we use the _ONSTACK() variant for those that
27 * are on the kernel stack:
28 */
29#ifdef CONFIG_LOCKDEP
30# define DECLARE_COMPLETION_ONSTACK(work) \
31 struct completion work = ({ init_completion(&work); work; })
32#else
33# define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work)
34#endif
35
36static inline void init_completion(struct completion *x)
37{
38 x->done = 0;
39 init_waitqueue_head(&x->wait);
40}
41
42extern void FASTCALL(wait_for_completion(struct completion *));
43extern int FASTCALL(wait_for_completion_interruptible(struct completion *x));
44extern unsigned long FASTCALL(wait_for_completion_timeout(struct completion *x,
45 unsigned long timeout));
46extern unsigned long FASTCALL(wait_for_completion_interruptible_timeout(
47 struct completion *x, unsigned long timeout));
48
49extern void FASTCALL(complete(struct completion *));
50extern void FASTCALL(complete_all(struct completion *));
51
52#define INIT_COMPLETION(x) ((x).done = 0)
53
54#endif