br_private_timer.h

来自「Linux内核源代码 为压缩文件 是<<Linux内核>&gt」· C头文件 代码 · 共 55 行

/*
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<[e-mail]>
 *
 *	$Id: br_private_timer.h,v 1.1 2000/02/18 16:47:13 davem Exp $
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 */

#ifndef _BR_PRIVATE_TIMER_H
#define _BR_PRIVATE_TIMER_H

struct br_timer
{
	int running;
	unsigned long expires;
};

extern __inline__ void br_timer_clear(struct br_timer *t)
{
	t->running = 0;
}

extern __inline__ unsigned long br_timer_get_residue(struct br_timer *t)
{
	if (t->running)
		return jiffies - t->expires;

	return 0;
}

extern __inline__ void br_timer_set(struct br_timer *t, unsigned long x)
{
	t->expires = x;
	t->running = 1;
}

extern __inline__ int br_timer_is_running(struct br_timer *t)
{
	return t->running;
}

extern __inline__ int br_timer_has_expired(struct br_timer *t, unsigned long to)
{
	return t->running && time_after_eq(jiffies, t->expires + to);
}


#endif