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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_COMPLETION_H#define __LINUX_COMPLETION_H
/* * (C) Copyright 2001 Linus Torvalds * * Atomic wait-for-completion handler data structures. * See kernel/sched/completion.c for details. */
#include <linux/swait.h>
/* * struct completion - structure used to maintain state for a "completion" * * This is the opaque structure used to maintain the state for a "completion". * Completions currently use a FIFO to queue threads that have to wait for * the "completion" event. * * See also: complete(), wait_for_completion() (and friends _timeout, * _interruptible, _interruptible_timeout, and _killable), init_completion(), * reinit_completion(), and macros DECLARE_COMPLETION(), * DECLARE_COMPLETION_ONSTACK(). */struct completion { unsigned int done; struct swait_queue_head wait;};
#define init_completion_map(x, m) init_completion(x)static inline void complete_acquire(struct completion *x) {}static inline void complete_release(struct completion *x) {}
#define COMPLETION_INITIALIZER(work) \ { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
#define COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) \ (*({ init_completion_map(&(work), &(map)); &(work); }))
#define COMPLETION_INITIALIZER_ONSTACK(work) \ (*({ init_completion(&work); &work; }))
/** * DECLARE_COMPLETION - declare and initialize a completion structure * @work: identifier for the completion structure * * This macro declares and initializes a completion structure. Generally used * for static declarations. You should use the _ONSTACK variant for automatic * variables. */#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: *//** * DECLARE_COMPLETION_ONSTACK - declare and initialize a completion structure * @work: identifier for the completion structure * * This macro declares and initializes a completion structure on the kernel * stack. */#ifdef CONFIG_LOCKDEP# define DECLARE_COMPLETION_ONSTACK(work) \ struct completion work = COMPLETION_INITIALIZER_ONSTACK(work)# define DECLARE_COMPLETION_ONSTACK_MAP(work, map) \ struct completion work = COMPLETION_INITIALIZER_ONSTACK_MAP(work, map)#else# define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work)# define DECLARE_COMPLETION_ONSTACK_MAP(work, map) DECLARE_COMPLETION(work)#endif
/** * init_completion - Initialize a dynamically allocated completion * @x: pointer to completion structure that is to be initialized * * This inline function will initialize a dynamically created completion * structure. */static inline void init_completion(struct completion *x){ x->done = 0; init_swait_queue_head(&x->wait);}
/** * reinit_completion - reinitialize a completion structure * @x: pointer to completion structure that is to be reinitialized * * This inline function should be used to reinitialize a completion structure so it can * be reused. This is especially important after complete_all() is used. */static inline void reinit_completion(struct completion *x){ x->done = 0;}
extern void wait_for_completion(struct completion *);extern void wait_for_completion_io(struct completion *);extern int wait_for_completion_interruptible(struct completion *x);extern int wait_for_completion_killable(struct completion *x);extern int wait_for_completion_state(struct completion *x, unsigned int state);extern unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout);extern unsigned long wait_for_completion_io_timeout(struct completion *x, unsigned long timeout);extern long wait_for_completion_interruptible_timeout( struct completion *x, unsigned long timeout);extern long wait_for_completion_killable_timeout( struct completion *x, unsigned long timeout);extern bool try_wait_for_completion(struct completion *x);extern bool completion_done(struct completion *x);
extern void complete(struct completion *);extern void complete_on_current_cpu(struct completion *x);extern void complete_all(struct completion *);
#endif