include/timer.h

   1 #ifndef UTIL_LINUX_TIMER_H
   2 #define UTIL_LINUX_TIMER_H
   3
   4 #include <signal.h>
   5 #include <sys/time.h>
   6
   7 static inline void setup_timer(
   8                         struct itimerval *timer,
   9                         struct itimerval *old_timer,
  10                         struct sigaction *old_sa,
  11                         void (*timeout_handler)(int))
  12 {
  13         struct sigaction sa;
  14
  15         memset(&sa, 0, sizeof sa);
  16         sa.sa_handler = timeout_handler;
  17         sa.sa_flags = SA_RESETHAND;
  18         sigaction(SIGALRM, &sa, old_sa);
  19
  20         setitimer(ITIMER_REAL, timer, old_timer);
  21 }
  22
  23 static inline void cancel_timer(
  24                         struct itimerval *old_timer,
  25                         struct sigaction *old_sa)
  26 {
  27         setitimer(ITIMER_REAL, old_timer, NULL);
  28         sigaction(SIGALRM, old_sa, NULL);
  29 }
  30
  31 #endif