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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/completion.h
1 #ifndef __LINUX_COMPLETION_H
2 #define __LINUX_COMPLETION_H
5 * (C) Copyright 2001 Linus Torvalds
7 * Atomic wait-for-completion handler data structures.
8 * See kernel/sched.c for details.
11 #include <linux/wait.h>
15 wait_queue_head_t wait
;
18 #define COMPLETION_INITIALIZER(work) \
19 { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
21 #define COMPLETION_INITIALIZER_ONSTACK(work) \
22 ({ init_completion(&work); work; })
24 #define DECLARE_COMPLETION(work) \
25 struct completion work = COMPLETION_INITIALIZER(work)
28 * Lockdep needs to run a non-constant initializer for on-stack
29 * completions - so we use the _ONSTACK() variant for those that
30 * are on the kernel stack:
33 # define DECLARE_COMPLETION_ONSTACK(work) \
34 struct completion work = COMPLETION_INITIALIZER_ONSTACK(work)
36 # define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work)
39 static inline void init_completion(struct completion
*x
)
42 init_waitqueue_head(&x
->wait
);
45 extern void FASTCALL(wait_for_completion(struct completion
*));
46 extern int FASTCALL(wait_for_completion_interruptible(struct completion
*x
));
47 extern unsigned long FASTCALL(wait_for_completion_timeout(struct completion
*x
,
48 unsigned long timeout
));
49 extern unsigned long FASTCALL(wait_for_completion_interruptible_timeout(
50 struct completion
*x
, unsigned long timeout
));
52 extern void FASTCALL(complete(struct completion
*));
53 extern void FASTCALL(complete_all(struct completion
*));
55 #define INIT_COMPLETION(x) ((x).done = 0)