minix/include/ddekit/timer.h

   1 #ifndef _DDEKIT_TIMER_H
   2 #define _DDEKIT_TIMER_H
   3
   4 #include <ddekit/ddekit.h>
   5 #include <ddekit/thread.h>
   6
   7 /** \defgroup DDEKit_timer
   8  *
   9  * Timer subsystem
  10  *
  11  * DDEKit provides a generic timer implementation that enables users
  12  * to execute a function with some arguments after a certain period
  13  * of time. DDEKit therefore starts a timer thread that executes these
  14  * functions and keeps track of the currently running timers.
  15  */
  16
  17 /** Add a timer event. After the absolute timeout has expired, function fn
  18  * is called with args as arguments.
  19  *
  20  *  \ingroup DDEKit_timer
  21  *
  22  *      \return         >=0     valid timer ID
  23  *  \return             < 0     error
  24  */
  25 int ddekit_add_timer(void (*fn)(void *), void *args, unsigned long
  26         timeout);
  27
  28 /** Delete timer with the corresponding timer id.
  29  *
  30  *  \ingroup DDEKit_timer
  31  */
  32 int ddekit_del_timer(int timer);
  33
  34 /** Check whether a timer is pending
  35  *
  36  *  \ingroup DDEKit_timer
  37  *
  38  * Linux needs this.
  39  */
  40 int ddekit_timer_pending(int timer);
  41
  42 /** Initialization function, startup timer thread
  43  *
  44  *  \ingroup DDEKit_timer
  45  */
  46 void ddekit_init_timers(void);
  47
  48 /** Get the timer thread.
  49  */
  50 ddekit_thread_t *ddekit_get_timer_thread(void);
  51
  52 #endif