fs/afs/kafstimod.h

   1 /* kafstimod.h: AFS timeout daemon
   2  *
   3  * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _LINUX_AFS_KAFSTIMOD_H
  13 #define _LINUX_AFS_KAFSTIMOD_H
  14
  15 #include "types.h"
  16
  17 struct afs_timer;
  18
  19 struct afs_timer_ops {
  20         /* called when the front of the timer queue has timed out */
  21         void (*timed_out)(struct afs_timer *timer);
  22 };
  23
  24 /*****************************************************************************/
  25 /*
  26  * AFS timer/timeout record
  27  */
  28 struct afs_timer
  29 {
  30         struct list_head                link;           /* link in timer queue */
  31         unsigned long                   timo_jif;       /* timeout time */
  32         const struct afs_timer_ops      *ops;           /* timeout expiry function */
  33 };
  34
  35 static inline void afs_timer_init(struct afs_timer *timer,
  36                                   const struct afs_timer_ops *ops)
  37 {
  38         INIT_LIST_HEAD(&timer->link);
  39         timer->ops = ops;
  40 }
  41
  42 extern int afs_kafstimod_start(void);
  43 extern void afs_kafstimod_stop(void);
  44
  45 extern void afs_kafstimod_add_timer(struct afs_timer *timer,
  46                                     unsigned long timeout);
  47 extern int afs_kafstimod_del_timer(struct afs_timer *timer);
  48
  49 #endif /* _LINUX_AFS_KAFSTIMOD_H */