| 1 | #ifndef _LINUX_COMPLETION_H
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| 2 | #define _LINUX_COMPLETION_H
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| 3 |
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| 4 | #include <linux/wait.h>
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| 5 |
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| 6 | /*
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| 7 | * struct completion - structure used to maintain state for a "completion"
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| 8 | *
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| 9 | * This is the opaque structure used to maintain the state for a "completion".
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| 10 | * Completions currently use a FIFO to queue threads that have to wait for
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| 11 | * the "completion" event.
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| 12 | *
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| 13 | * See also: complete(), wait_for_completion() (and friends _timeout,
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| 14 | * _interruptible, _interruptible_timeout, and _killable), init_completion(),
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| 15 | * reinit_completion(), and macros DECLARE_COMPLETION(),
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| 16 | * DECLARE_COMPLETION_ONSTACK().
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| 17 | */
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| 18 | struct completion {
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| 19 | unsigned int done;
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| 20 | wait_queue_head_t wait;
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| 21 | };
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| 22 |
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| 23 | #define DECLARE_COMPLETION_ONSTACK(work) struct completion work;
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| 24 | /**
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| 25 | * init_completion - Initialize a dynamically allocated completion
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| 26 | * @x: completion structure that is to be initialized
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| 27 | *
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| 28 | * This inline function will initialize a dynamically created completion
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| 29 | * structure.
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| 30 | */
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| 31 | static inline void init_completion(struct completion *x)
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| 32 | {
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| 33 | x->done = 0;
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| 34 | init_waitqueue_head(&x->wait);
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| 35 | }
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| 36 |
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| 37 | extern void complete(struct completion *);
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| 38 | extern void complete_all(struct completion *);
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| 39 | extern void wait_for_completion(struct completion *x);
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| 40 | extern bool try_wait_for_completion(struct completion *x);
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| 41 | #endif /* _LINUX_COMPLETION_H */
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