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two races fixed in session creation

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This commit is contained in:
Martin Sustrik 2010-09-19 20:43:14 +02:00
parent 1f10208ad0
commit 471013a59f
1 changed files with 12 additions and 4 deletions
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16
src/zmq_init.cpp
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@ -153,14 +153,18 @@ void zmq::zmq_init_t::finalise_initialisation ()
zmq_assert (socket);
// We have no associated session. If the peer has no identity we'll
// create a transient session for the connection.
// create a transient session for the connection. Note that
// seqnum is incremented to account for attach command before the
// session is launched. That way we are sure it won't terminate before
// being attached.
if (peer_identity [0] == 0) {
session = new (std::nothrow) transient_session_t (io_thread,
socket, options);
zmq_assert (session);
session->inc_seqnum ();
launch_sibling (session);
engine->unplug ();
send_attach (session, engine, peer_identity, true);
send_attach (session, engine, peer_identity, false);
engine = NULL;
terminate ();
return;
@ -179,13 +183,17 @@ void zmq::zmq_init_t::finalise_initialisation ()
return;
}
// There's no such named session. We have to create one.
// There's no such named session. We have to create one. Note that
// seqnum is incremented to account for attach command before the
// session is launched. That way we are sure it won't terminate before
// being attached.
session = new (std::nothrow) named_session_t (io_thread, socket,
options, peer_identity);
zmq_assert (session);
session->inc_seqnum ();
launch_sibling (session);
engine->unplug ();
send_attach (session, engine, peer_identity, true);
send_attach (session, engine, peer_identity, false);
engine = NULL;
terminate ();
return;