/// <summary>
/// Wait for arrival of messages in any one of the given mailboxes
/// </summary>
/// <param name="mboxes">Mailboxes to wait for messages in</param>
/// <param name="msecTimeout">Timeout in milliseconds</param>
/// <returns>Index of the first non-empty mailbox or -1 on timeout</returns>
public int WaitAny(ErlMbox[] mboxes, int msecTimeout = -1)
{
for(int i = 0; i < mboxes.Length; i++)
if (!mboxes[i].Empty)
return i;
if (msecTimeout == 0)
return -1;
int n = WaitHandle.WaitAny(mboxes.Select(m => m.Handle).ToArray(), msecTimeout);
return n == WaitHandle.WaitTimeout ? -1 : n;
}
