From a15854bd92db69fcd0b4444fe1b8fe3610a7acf6 Mon Sep 17 00:00:00 2001
From: Martin Lucina <martin@lucina.net>
Date: Mon, 23 Jan 2012 08:53:19 +0100
Subject: Imported Upstream version 2.0.7.dfsg

---
 src/pair.cpp | 139 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/pair.cpp

(limited to 'src/pair.cpp')

diff --git a/src/pair.cpp b/src/pair.cpp
new file mode 100644
index 0000000..31524de
--- /dev/null
+++ b/src/pair.cpp
@@ -0,0 +1,139 @@
+/*
+    Copyright (c) 2007-2010 iMatix Corporation
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "../include/zmq.h"
+
+#include "pair.hpp"
+#include "err.hpp"
+#include "pipe.hpp"
+
+zmq::pair_t::pair_t (class app_thread_t *parent_) :
+    socket_base_t (parent_),
+    inpipe (NULL),
+    outpipe (NULL),
+    alive (true)
+{
+    options.requires_in = true;
+    options.requires_out = true;
+}
+
+zmq::pair_t::~pair_t ()
+{
+    if (inpipe)
+        inpipe->term ();
+    if (outpipe)
+        outpipe->term ();
+}
+
+void zmq::pair_t::xattach_pipes (class reader_t *inpipe_,
+    class writer_t *outpipe_, const blob_t &peer_identity_)
+{
+    zmq_assert (!inpipe && !outpipe);
+    inpipe = inpipe_;
+    outpipe = outpipe_;
+    outpipe_alive = true;
+}
+
+void zmq::pair_t::xdetach_inpipe (class reader_t *pipe_)
+{
+    zmq_assert (pipe_ == inpipe);
+    inpipe = NULL;
+}
+
+void zmq::pair_t::xdetach_outpipe (class writer_t *pipe_)
+{
+    zmq_assert (pipe_ == outpipe);
+    outpipe = NULL;
+}
+
+void zmq::pair_t::xkill (class reader_t *pipe_)
+{
+    zmq_assert (alive);
+    alive = false;
+}
+
+void zmq::pair_t::xrevive (class reader_t *pipe_)
+{
+    zmq_assert (!alive);
+    alive = true;
+}
+
+void zmq::pair_t::xrevive (class writer_t *pipe_)
+{
+    zmq_assert (!outpipe_alive);
+    outpipe_alive = true;
+}
+
+int zmq::pair_t::xsetsockopt (int option_, const void *optval_,
+    size_t optvallen_)
+{
+    errno = EINVAL;
+    return -1;
+}
+
+int zmq::pair_t::xsend (zmq_msg_t *msg_, int flags_)
+{
+    if (outpipe == NULL || !outpipe_alive) {
+        errno = EAGAIN;
+        return -1;
+    }
+
+    if (!outpipe->write (msg_)) {
+        outpipe_alive = false;
+        errno = EAGAIN;
+        return -1;
+    }
+
+    outpipe->flush ();
+
+    //  Detach the original message from the data buffer.
+    int rc = zmq_msg_init (msg_);
+    zmq_assert (rc == 0);
+
+    return 0;
+}
+
+int zmq::pair_t::xrecv (zmq_msg_t *msg_, int flags_)
+{
+    //  Deallocate old content of the message.
+    zmq_msg_close (msg_);
+
+    if (!alive || !inpipe || !inpipe->read (msg_)) {
+        errno = EAGAIN;
+        return -1;
+    }
+    return 0;
+}
+
+bool zmq::pair_t::xhas_in ()
+{
+    if (alive && inpipe && inpipe->check_read ())
+        return true;
+    return false;
+}
+
+bool zmq::pair_t::xhas_out ()
+{
+    if (outpipe == NULL || !outpipe_alive)
+        return false;
+
+    outpipe_alive = outpipe->check_write ();
+    return outpipe_alive;
+}
+
-- 
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