memcheck/tests/freebsd/clock_nanosleep_interrupt.c

   1 #include <fcntl.h>
   2 #include <signal.h>
   3 #include <stdio.h>
   4 #include <sys/time.h>
   5 #include <unistd.h>
   6 #include <stdlib.h>
   7
   8 volatile int     ticks = 0;
   9 struct itimerval timert;
  10 struct sigaction timer_action;
  11
  12 void handle_vtalrm(int sig) { ticks++; }
  13
  14
  15 int main(int argc, char* argv[])
  16 {
  17    timer_action.sa_handler = handle_vtalrm;
  18    sigemptyset(&timer_action.sa_mask);
  19    timer_action.sa_flags = SA_RESTART;
  20
  21    sigaction(SIGVTALRM, &timer_action, NULL);
  22
  23    timert.it_interval.tv_sec = timert.it_value.tv_sec = 0;
  24    timert.it_interval.tv_usec = timert.it_value.tv_usec = 500;
  25    setitimer(ITIMER_VIRTUAL, &timert, NULL);
  26
  27    struct timespec ts_initialized = {0, 1000000};
  28    struct timespec* too_small = malloc(1);
  29
  30    clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts_initialized,
  31                    too_small);
  32 }