void silc_cond_timedwait(SilcCond cond, SilcMutex mutex, int timeout);

    Waits for condition variable `cond' to be signalled or for the
    `timeout' to expire.  The timeout is in milliseconds.  If it is 0
    no timeout exist.  Returns FALSE if timeout expired, TRUE when
    signalled.  This function will block the calling thread until the
    condition variable is signalled.  The `mutex' must be locked before
    calling this function.  The `mutex' will be unlocked inside this
    function.  After this function returns the `mutex' is in locked
    state again.