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 #define BLANK_TIMER     0
  36 #define BEEP_TIMER      1
  37 #define RS_TIMER        2
  38 
  39 #define HD_TIMER        16
  40 #define FLOPPY_TIMER    17
  41 #define SCSI_TIMER      18
  42 #define NET_TIMER       19
  43 #define SOUND_TIMER     20
  44 #define COPRO_TIMER     21
  45 
  46 #define QIC02_TAPE_TIMER        22      /* hhb */
  47 #define MCD_TIMER       23
  48 
  49 #define HD_TIMER2       24
  50 
  51 struct timer_struct {
  52         unsigned long expires;
  53         void (*fn)(void);
  54 };
  55 
  56 extern unsigned long timer_active;
  57 extern struct timer_struct timer_table[32];
  58 
  59 /*
  60  * This is completely separate from the above, and is the
  61  * "new and improved" way of handling timers more dynamically.
  62  * Hopefully efficient and general enough for most things.
  63  *
  64  * The "hardcoded" timers above are still useful for well-
  65  * defined problems, but the timer-list is probably better
  66  * when you need multiple outstanding timers or similar.
  67  *
  68  * The "data" field is in case you want to use the same
  69  * timeout function for several timeouts. You can use this
  70  * to distinguish between the different invocations.
  71  */
  72 struct timer_list {
  73         struct timer_list *next;
  74         struct timer_list *prev;
  75         unsigned long expires;
  76         unsigned long data;
  77         void (*function)(unsigned long);
  78 };
  79 
  80 extern void add_timer(struct timer_list * timer);
  81 extern int  del_timer(struct timer_list * timer);
  82 
  83 extern inline void init_timer(struct timer_list * timer)
     /*  */
  84 {
  85         timer->next = NULL;
  86         timer->prev = NULL;
  87 }
  88 
  89 #endif

/* */