initial commit

src/dummy_aggregator.cpp

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+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    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/zs.h"
+
+#include "dummy_aggregator.hpp"
+#include "err.hpp"
+#include "pipe_reader.hpp"
+#include "session.hpp"
+
+//  Swaps pipes at specified indices. 
+#define swap_pipes(i1_, i2_) \
+    std::swap (pipes [i1_], pipes [i2_]);\
+    pipes [i1_]->set_index (i1_);\
+    pipes [i2_]->set_index (i2_);
+
+zs::dummy_aggregator_t::dummy_aggregator_t () :
+    session (NULL),
+    pipe (NULL),
+    active (false)
+{
+}
+
+void zs::dummy_aggregator_t::set_session (session_t *session_)
+{
+    zs_assert (!session);
+    session = session_;
+}
+
+void zs::dummy_aggregator_t::shutdown ()
+{
+    //  No need to deallocate the pipe here. It'll be deallocated during the
+    //  shutdown of the dispatcher.
+    delete this;
+}
+
+void zs::dummy_aggregator_t::terminate ()
+{
+    if (pipe)
+        pipe->terminate ();
+
+   delete this;
+}
+
+zs::dummy_aggregator_t::~dummy_aggregator_t ()
+{
+}
+
+void zs::dummy_aggregator_t::attach_pipe (pipe_reader_t *pipe_)
+{
+    zs_assert (!pipe);
+    pipe = pipe_;
+    active = true;
+
+    //  Associate new pipe with the mux object.
+    pipe_->set_mux (this);
+    session->revive ();
+}
+
+void zs::dummy_aggregator_t::detach_pipe (pipe_reader_t *pipe_)
+{
+    zs_assert (pipe == pipe_);
+    deactivate (pipe_);
+    pipe = NULL;
+}
+
+bool zs::dummy_aggregator_t::empty ()
+{
+    return pipe == NULL;
+}
+
+bool zs::dummy_aggregator_t::recv (zs_msg *msg_)
+{
+    //  Deallocate old content of the message.
+    zs_msg_close (msg_);
+        
+    //  Try to read from the pipe.
+    if (pipe && pipe->read (msg_))
+        return true;
+
+    //  No message is available. Initialise the output parameter
+    //  to be a 0-byte message.
+    zs_msg_init (msg_);
+    return false;
+}
+
+void zs::dummy_aggregator_t::deactivate (pipe_reader_t *pipe_)
+{
+    active = false;
+}
+
+void zs::dummy_aggregator_t::reactivate (pipe_reader_t *pipe_)
+{
+    active = true;
+}