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/*
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __TIMER_WHEEL_H
#define __TIMER_WHEEL_H
#include "glusterfs/locking.h"
#include "glusterfs/list.h"
#define TVR_BITS 8
#define TVN_BITS 6
#define TVR_SIZE (1 << TVR_BITS)
#define TVN_SIZE (1 << TVN_BITS)
#define TVR_MASK (TVR_SIZE - 1)
#define TVN_MASK (TVN_SIZE - 1)
#define BITS_PER_LONG 64
struct tvec {
struct list_head vec[TVN_SIZE];
};
struct tvec_root {
struct list_head vec[TVR_SIZE];
};
struct tvec_base {
pthread_spinlock_t lock; /* base lock */
pthread_t runner; /* run_timer() */
unsigned long timer_sec; /* time counter */
struct tvec_root tv1;
struct tvec tv2;
struct tvec tv3;
struct tvec tv4;
struct tvec tv5;
};
struct gf_tw_timer_list {
void *data;
unsigned long expires;
/** callback routine */
void (*function)(struct gf_tw_timer_list *, void *, unsigned long);
struct list_head entry;
};
/** The API! */
struct tvec_base *gf_tw_init_timers ();
int gf_tw_cleanup_timers (struct tvec_base *);
void gf_tw_add_timer (struct tvec_base *, struct gf_tw_timer_list *);
int gf_tw_del_timer (struct tvec_base *, struct gf_tw_timer_list *);
int gf_tw_mod_timer_pending (struct tvec_base *,
struct gf_tw_timer_list *, unsigned long);
int gf_tw_mod_timer (struct tvec_base *,
struct gf_tw_timer_list *, unsigned long);
#endif
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