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 #if defined(__NR_timer_gettime) || defined(__NR_timer_gettime64)
  13
  14 #if defined(__UCLIBC_USE_TIME64__) && defined(__NR_timer_gettime64)
  15 #define __NR___syscall_timer_gettime __NR_timer_gettime64
  16 #else
  17 #define __NR___syscall_timer_gettime __NR_timer_gettime
  18 #endif
  19 static __inline__ _syscall2(int, __syscall_timer_gettime, kernel_timer_t, ktimerid,
  20                         void *, value);
  21
  22 /* Get the amount of time left on a timer */
  23 int timer_gettime(timer_t timerid, struct itimerspec *value)
  24 {
  25         struct timer *kt = (struct timer *)timerid;
  26
  27         /* Get timeout from the kernel */
  28         return __syscall_timer_gettime(kt->ktimerid, value);
  29 }
  30
  31 #endif