root/include/linux/timer.h

/* */

INCLUDED FROM

DEFINITIONS

1. init_timer

   1 #ifndef _LINUX_TIMER_H
   2 #define _LINUX_TIMER_H
   3 
   4 /*
   5  * DON'T CHANGE THESE!! Most of them are hardcoded into some assembly language
   6  * as well as being defined here.
   7  */
   8 
   9 /*
  10  * The timers are:
  11  *
  12  * BLANK_TIMER          console screen-saver timer
  13  *
  14  * BEEP_TIMER           console beep timer
  15  *
  16  * RS_TIMER             timer for the RS-232 ports
  17  * 
  18  * HD_TIMER             harddisk timer
  19  *
  20  * HD_TIMER2            (atdisk2 patches)
  21  *
  22  * FLOPPY_TIMER         floppy disk timer (not used right now)
  23  * 
  24  * SCSI_TIMER           scsi.c timeout timer
  25  *
  26  * NET_TIMER            tcp/ip timeout timer
  27  *
  28  * COPRO_TIMER          387 timeout for buggy hardware..
  29  *
  30  * QIC02_TAPE_TIMER     timer for QIC-02 tape driver (it's not hardcoded)
  31  *
  32  * MCD_TIMER            Mitsumi CD-ROM Timer
  33  *
  34  */
  35 
  36 #define BLANK_TIMER     0
  37 #define BEEP_TIMER      1
  38 #define RS_TIMER        2
  39 
  40 #define HD_TIMER        16
  41 #define FLOPPY_TIMER    17
  42 #define SCSI_TIMER      18
  43 #define NET_TIMER       19
  44 #define SOUND_TIMER     20
  45 #define COPRO_TIMER     21
  46 
  47 #define QIC02_TAPE_TIMER        22      /* hhb */
  48 #define MCD_TIMER       23
  49 
  50 #define HD_TIMER2       24
  51 
  52 struct timer_struct {
  53         unsigned long expires;
  54         void (*fn)(void);
  55 };
  56 
  57 extern unsigned long timer_active;
  58 extern struct timer_struct timer_table[32];
  59 
  60 /*
  61  * This is completely separate from the above, and is the
  62  * "new and improved" way of handling timers more dynamically.
  63  * Hopefully efficient and general enough for most things.
  64  *
  65  * The "hardcoded" timers above are still useful for well-
  66  * defined problems, but the timer-list is probably better
  67  * when you need multiple outstanding timers or similar.
  68  *
  69  * The "data" field is in case you want to use the same
  70  * timeout function for several timeouts. You can use this
  71  * to distinguish between the different invocations.
  72  */
  73 struct timer_list {
  74         struct timer_list *next;
  75         struct timer_list *prev;
  76         unsigned long expires;
  77         unsigned long data;
  78         void (*function)(unsigned long);
  79 };
  80 
  81 extern void add_timer(struct timer_list * timer);
  82 extern int  del_timer(struct timer_list * timer);
  83 
  84 extern inline void init_timer(struct timer_list * timer)
     /*  */
  85 {
  86         timer->next = NULL;
  87         timer->prev = NULL;
  88 }
  89 
  90 #endif

/* */