librt/timer_gettime.c

   1 /*
   2  * timer_gettime.c - get the timer value.
   3  */
   4
   5 #include <errno.h>
   6 #include <stdlib.h>
   7 #include <time.h>
   8 #include <sys/syscall.h>
   9
  10 #include "kernel-posix-timers.h"
  11
  12 #ifdef __NR_timer_gettime
  13
  14 #define __NR___syscall_timer_gettime __NR_timer_gettime
  15 static __inline__ _syscall2(int, __syscall_timer_gettime, kernel_timer_t, ktimerid,
  16                         void *, value);
  17
  18 /* Get the amount of time left on a timer */
  19 int timer_gettime(timer_t timerid, struct itimerspec *value)
  20 {
  21         struct timer *kt = (struct timer *)timerid;
  22
  23         /* Get timeout from the kernel */
  24         return __syscall_timer_gettime(kt->ktimerid, value);
  25 }
  26
  27 #endif