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<title>next_event (Fam::Connection)</title>
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<pre>/*
* Get the next event from the event queue, or block until an event is
* available.
*
* Raises a Fam::Error exception if FAM couldn't check for pending
* events, or if FAM-Ruby couldn't get the next FAM event.
*
* Aliases:
* Fam::Connection#next_ev
* Fam::Connection#ev
*
* Examples:
* ev = fam.next_event
*
*/
static VALUE fam_conn_next_ev(VALUE self)
{
FAMConnection *conn;
FAMEvent *ev = NULL;
int err;
Data_Get_Struct(self, FAMConnection, conn);
if (!(err = FAMPending(conn))) {
int fd = FAMCONNECTION_GETFD(conn);
fd_set rfds;
FD_ZERO(&rfds);
do {
if (err == -1)
rb_raise(eError, "Couldn't check for pending FAM events: %s", fam_error());
FD_SET(fd, &rfds);
rb_thread_select(fd + 1, &rfds, NULL, NULL, NULL);
} while (!FD_ISSET(fd, &rfds) || !(err = FAMPending(conn)));
}
ev = ALLOC(FAMEvent);
err = FAMNextEvent(conn, ev);
if (err == -1) {
xfree(ev);
rb_raise(eError, "Couldn't get next FAM event: %s", fam_error());
}
return wrap_ev(ev);
}</pre>
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