#include <stdio.h>
static void (*timeout_func) (void) = NULL;

#ifdef _WIN32
# include <stdio.h>
# include <windows.h>
# include <process.h>

unsigned int
_timeout(void *arg)
{
   int s = (int)(uintptr_t)arg;
   Sleep(s * 1000);
   if (timeout_func) timeout_func();
   _Exit(-1);
   _endthreadex(0);
   return 0;
}

void
timeout_init(int seconds)
{
   unsigned int id;
   _beginthreadex( NULL, 0, _timeout, (void *)(uintptr_t)seconds, 0, &id);
}
#else
# include <unistd.h>
# include <signal.h>

static void
_timeout(int val)
{
   if (timeout_func) timeout_func();
   _exit(-1);
   if (val) return;
}

void
timeout_init(int seconds)
{
   signal(SIGALRM, _timeout);
   alarm(seconds);
}
#endif

void
timeout_func_set(void (*func) (void))
{
   timeout_func = func;
}