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- #ifndef __LINUX_COMPLETION_H
- #define __LINUX_COMPLETION_H
- /*
- * (C) Copyright 2001 Linus Torvalds
- *
- * Atomic wait-for-completion handler data structures.
- * See kernel/sched.c for details.
- */
- #include <linux/wait.h>
- struct completion {
- unsigned int done;
- wait_queue_head_t wait;
- };
- #define COMPLETION_INITIALIZER(work) \
- { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
- #define COMPLETION_INITIALIZER_ONSTACK(work) \
- ({ init_completion(&work); work; })
- #define DECLARE_COMPLETION(work) \
- struct completion work = COMPLETION_INITIALIZER(work)
- /*
- * Lockdep needs to run a non-constant initializer for on-stack
- * completions - so we use the _ONSTACK() variant for those that
- * are on the kernel stack:
- */
- #ifdef CONFIG_LOCKDEP
- # define DECLARE_COMPLETION_ONSTACK(work) \
- struct completion work = COMPLETION_INITIALIZER_ONSTACK(work)
- #else
- # define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work)
- #endif
- static inline void init_completion(struct completion *x)
- {
- x->done = 0;
- init_waitqueue_head(&x->wait);
- }
- extern void FASTCALL(wait_for_completion(struct completion *));
- extern int FASTCALL(wait_for_completion_interruptible(struct completion *x));
- extern unsigned long FASTCALL(wait_for_completion_timeout(struct completion *x,
- unsigned long timeout));
- extern unsigned long FASTCALL(wait_for_completion_interruptible_timeout(
- struct completion *x, unsigned long timeout));
- extern void FASTCALL(complete(struct completion *));
- extern void FASTCALL(complete_all(struct completion *));
- #define INIT_COMPLETION(x) ((x).done = 0)
- #endif
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