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  * SWAP_TIMER           timer for the background pageout daemon
  19  * 
  20  * HD_TIMER             harddisk timer
  21  *
  22  * HD_TIMER2            (atdisk2 patches)
  23  *
  24  * FLOPPY_TIMER         floppy disk timer (not used right now)
  25  * 
  26  * SCSI_TIMER           scsi.c timeout timer
  27  *
  28  * NET_TIMER            tcp/ip timeout timer
  29  *
  30  * COPRO_TIMER          387 timeout for buggy hardware..
  31  *
  32  * QIC02_TAPE_TIMER     timer for QIC-02 tape driver (it's not hardcoded)
  33  *
  34  * MCD_TIMER            Mitsumi CD-ROM Timer
  35  *
  36  * GSCD_TIMER           Goldstar CD-ROM Timer
  37  *
  38  */
  39 
  40 #define BLANK_TIMER     0
  41 #define BEEP_TIMER      1
  42 #define RS_TIMER        2
  43 #define SWAP_TIMER      3
  44 
  45 #define HD_TIMER        16
  46 #define FLOPPY_TIMER    17
  47 #define SCSI_TIMER      18
  48 #define NET_TIMER       19
  49 #define SOUND_TIMER     20
  50 #define COPRO_TIMER     21
  51 
  52 #define QIC02_TAPE_TIMER        22      /* hhb */
  53 #define MCD_TIMER       23
  54 
  55 #define HD_TIMER2       24
  56 #define GSCD_TIMER      25
  57 
  58 #define DIGI_TIMER      29
  59 
  60 struct timer_struct {
  61         unsigned long expires;
  62         void (*fn)(void);
  63 };
  64 
  65 extern unsigned long timer_active;
  66 extern struct timer_struct timer_table[32];
  67 
  68 /*
  69  * This is completely separate from the above, and is the
  70  * "new and improved" way of handling timers more dynamically.
  71  * Hopefully efficient and general enough for most things.
  72  *
  73  * The "hardcoded" timers above are still useful for well-
  74  * defined problems, but the timer-list is probably better
  75  * when you need multiple outstanding timers or similar.
  76  *
  77  * The "data" field is in case you want to use the same
  78  * timeout function for several timeouts. You can use this
  79  * to distinguish between the different invocations.
  80  */
  81 struct timer_list {
  82         struct timer_list *next;
  83         struct timer_list *prev;
  84         unsigned long expires;
  85         unsigned long data;
  86         void (*function)(unsigned long);
  87 };
  88 
  89 extern void add_timer(struct timer_list * timer);
  90 extern int  del_timer(struct timer_list * timer);
  91 
  92 extern void it_real_fn(unsigned long);
  93 
  94 extern inline void init_timer(struct timer_list * timer)
     /*  */
  95 {
  96         timer->next = NULL;
  97         timer->prev = NULL;
  98 }
  99 
 100 #endif

/* */