protected WaitSlot insertWaiter(SynchEvent event, long time) {
// get a wait slot for this waiter
WaitSlot w = getWaitSlot(time);
// now this thread is officially waiting
wait_count++;
// remember the wait slot this waiter is in
event.waitSlot = w;
// increment the number of waiters in this slot
w.numWaiters++;
return w;
}
