|
public addLink ( |
||
| local | ||
| remote | ||
| return | void | |
/*
* pass the message to the node for final delivery. Note that the connection
* itself needs to know about links (in case of connection failure), so we
* snoop for link/unlink too here.
*/
public override void deliver(OtpMsg msg)
{
bool delivered = self.deliver(msg);
switch (msg.type())
{
case OtpMsg.linkTag:
if (delivered)
{
links.addLink(msg.getRecipientPid(), msg.getSenderPid());
}
else
{
try
{
// no such pid - send exit to sender
base.sendExit(msg.getRecipientPid(), msg.getSenderPid(), new OtpErlangAtom("noproc"));
}
catch (IOException)
{
}
}
break;
case OtpMsg.unlinkTag:
case OtpMsg.exitTag:
links.removeLink(msg.getRecipientPid(), msg.getSenderPid());
break;
case OtpMsg.exit2Tag:
break;
}
return;
}
/**
* <p>
* Link to a remote mailbox or Erlang process. Links are idempotent, calling
* this method multiple times will not result in more than one link being
* created.
* </p>
*
* <p>
* If the remote process subsequently exits or the mailbox is closed, a
* subsequent attempt to retrieve a message through this mailbox will cause
* an {@link OtpErlangExit OtpErlangExit} exception to be raised. Similarly,
* if the sending mailbox is closed, the linked mailbox or process will
* receive an exit signal.
* </p>
*
* <p>
* If the remote process cannot be reached in order to set the link, the
* exception is raised immediately.
* </p>
*
* @param to
* the {@link OtpErlangPid pid} representing the object to
* link to.
*
* @exception OtpErlangExit
* if the {@link OtpErlangPid pid} referred to does not
* exist or could not be reached.
*
*/
public void link(OtpErlangPid to)
{
try
{
String node = to.Node;
if (node.Equals(home.Node))
{
if (!home.deliver(new OtpMsg(OtpMsg.linkTag, self, to)))
{
throw new OtpErlangExit("noproc", to);
}
}
else
{
OtpCookedConnection conn = home.getConnection(node);
if (conn != null)
{
conn.link(self, to);
}
else
{
throw new OtpErlangExit("noproc", to);
}
}
}
catch (OtpErlangExit e)
{
throw e;
}
catch (Exception)
{
}
links.addLink(self, to);
}
