/**
* Wait for a message to arrive for this mailbox.
*
* @param timeout
* the time, in milliseconds, to wait for a message.
*
* @return an {@link OtpMsg OtpMsg} containing the header information as
* well as the body of the next message waiting in this mailbox.
*
* @exception OtpErlangExit
* if a linked {@link OtpErlangPid pid} has exited or has
* sent an exit signal to this mailbox.
*
* @exception InterruptedException
* if no message if the method times out before a message
* becomes available.
*/
public virtual OtpMsg receiveMsg(long timeout)
{
OtpMsg m = (OtpMsg)queue.get(timeout);
if (m == null)
{
return(null);
}
switch (m.type())
{
case OtpMsg.exitTag:
case OtpMsg.exit2Tag:
try
{
OtpErlangObject o = m.getMsg();
throw new OtpErlangExit(o, m.getSenderPid());
}
catch (OtpErlangDecodeException)
{
throw new OtpErlangExit("unknown", m.getSenderPid());
}
default:
return(m);
}
}
/*
* this method simulates net_kernel only for the purpose of replying to
* pings.
*/
private bool netKernel(OtpMsg m)
{
OtpMbox mbox = null;
try
{
OtpErlangTuple t = (OtpErlangTuple)m.getMsg();
OtpErlangTuple req = (OtpErlangTuple)t.elementAt(1); // actual
// request
OtpErlangPid pid = (OtpErlangPid)req.elementAt(0); // originating
// pid
OtpErlangObject[] pong = new OtpErlangObject[2];
pong[0] = req.elementAt(1); // his #Ref
pong[1] = new OtpErlangAtom("yes");
mbox = createMbox(true);
mbox.send(pid, new OtpErlangTuple(pong));
return(true);
}
catch (Exception)
{
}
finally
{
closeMbox(mbox);
}
return(false);
}
/**
* Wait for a message to arrive for this mailbox.
*
* @param timeout
* the time, in milliseconds, to wait for a message before
* returning null.
*
* @return an {@link OtpErlangObject OtpErlangObject} representing the body
* of the next message waiting in this mailbox.
*
* @exception OtpErlangDecodeException
* if the message can not be decoded.
*
* @exception OtpErlangExit
* if a linked {@link OtpErlangPid pid} has exited or has
* sent an exit signal to this mailbox.
*/
public OtpErlangObject receive(long timeout)
{
try
{
OtpMsg m = receiveMsg(timeout);
if (m != null)
{
return(m.getMsg());
}
}
catch (OtpErlangExit e)
{
throw e;
}
catch (OtpErlangDecodeException f)
{
throw f;
}
catch (ThreadInterruptedException)
{
}
return(null);
}
/*
* this method simulates net_kernel only for the purpose of replying to
* pings.
*/
private bool netKernel(OtpMsg m)
{
OtpMbox mbox = null;
try
{
OtpErlangTuple t = (OtpErlangTuple)m.getMsg();
OtpErlangTuple req = (OtpErlangTuple)t.elementAt(1); // actual
// request
OtpErlangPid pid = (OtpErlangPid)req.elementAt(0); // originating
// pid
OtpErlangObject[] pong = new OtpErlangObject[2];
pong[0] = req.elementAt(1); // his #Ref
pong[1] = new OtpErlangAtom("yes");
mbox = createMbox(true);
mbox.send(pid, new OtpErlangTuple(pong));
return true;
}
catch (Exception)
{
}
finally
{
closeMbox(mbox);
}
return false;
}
