Problem in Timers and signal

Question

I have implemented a POSIX timer using timer_create( ) API, and this will generate SIGUSR1 when the timer expires for which i have put a handler code. Now the problem is, if

Answer 1

The question is whether you really need to use signals. You may think of using callback that will be called when the timer expires:

void cbf(union sigval);
struct sigevent sev;
timer_t timer;

sev.sigev_notify = SIGEV_THREAD;
sev.sigev_notify_function = cbf; //this function will be called when timer expires
sev.sigev_value.sival_ptr = (void*) arg;//this argument will be passed to cbf
timer_create(CLOCK_MONOTONIC, &sev, &timer);

The callback function will be called in a new thread.