44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
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* Copyright (C) 2020, Samsung Electronics Co. Ltd. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/wait.h>
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#include <linux/sched.h>
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#include <linux/jiffies.h>
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#include "shub_wait_event.h"
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int shub_wait_event_timeout(struct shub_waitevent *lock, int timeout)
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{
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int ret;
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ret = wait_event_interruptible_timeout(lock->waitqueue, atomic_read(&lock->state), msecs_to_jiffies(timeout));
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if(ret == 0)
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return -ETIME;
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else
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return 0;
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}
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void shub_lock_wait_event(struct shub_waitevent *lock)
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{
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atomic_set(&lock->state, 0);
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}
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void shub_wake_up_wait_event(struct shub_waitevent *lock)
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{
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atomic_set(&lock->state, 1);
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wake_up_interruptible_sync(&lock->waitqueue);
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} |