From 4ed70a930202b103e7e80b8dc925e0aaa4622595 Mon Sep 17 00:00:00 2001
From: Martin Sustrik <sustrik@fastmq.commkdir>
Date: Wed, 29 Jul 2009 12:07:54 +0200
Subject: initial commit

---
 src/pipe_reader.cpp | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/pipe_reader.cpp

(limited to 'src/pipe_reader.cpp')

diff --git a/src/pipe_reader.cpp b/src/pipe_reader.cpp
new file mode 100644
index 0000000..5585b92
--- /dev/null
+++ b/src/pipe_reader.cpp
@@ -0,0 +1,118 @@
+/*
+    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 "pipe_reader.hpp"
+#include "pipe.hpp"
+#include "err.hpp"
+#include "i_mux.hpp"
+
+zs::pipe_reader_t::pipe_reader_t (object_t *parent_, pipe_t *pipe_,
+      uint64_t hwm_, uint64_t lwm_) :
+    object_t (parent_),
+    pipe (pipe_),
+    peer (NULL),
+    mux (NULL),
+    index (-1),
+    hwm (hwm_),
+    lwm (lwm_),
+    head (0),
+    tail (0),
+    last_sent_head (0)
+{
+}
+
+void zs::pipe_reader_t::set_peer (object_t *peer_)
+{
+    peer = peer_;
+}
+
+zs::pipe_reader_t::~pipe_reader_t ()
+{
+}
+
+void zs::pipe_reader_t::set_mux (i_mux *mux_)
+{
+    mux = mux_;
+}
+
+void zs::pipe_reader_t::set_index (int index_)
+{
+    index = index_;
+}
+
+int zs::pipe_reader_t::get_index ()
+{
+    return index;
+}
+
+void zs::pipe_reader_t::process_tail (uint64_t bytes_)
+{
+    tail = bytes_;
+    mux->reactivate (this);
+}
+
+bool zs::pipe_reader_t::read (struct zs_msg *msg_)
+{
+    //  Read a message.
+    if (!pipe->read (msg_)) {
+        mux->deactivate (this);
+        return false;
+    }
+
+    //  If successfull, adjust the head of the pipe.
+    head += zs_msg_size (msg_);
+
+    //  If pipe writer wasn't notified about the head position for long enough,
+    //  notify it.
+    if (head - last_sent_head >= hwm - lwm) {
+        send_head (peer, head);
+        last_sent_head = head;
+    }
+
+    if (zs_msg_type (msg_) == ZS_DELIMITER) {
+
+        //  Detach the pipe from the mux and send termination request to
+        //  the pipe writer.
+        mux->detach_pipe (this);
+        mux = NULL;
+        send_terminate (peer);
+        return false;
+    }
+
+    return true;
+}
+
+void zs::pipe_reader_t::terminate ()
+{
+    //  Detach the pipe from the mux and send termination request to
+    //  the pipe writer.
+    if (mux) {
+        mux->detach_pipe (this);
+        mux = NULL;
+    }
+    send_terminate (peer);
+}
+
+void zs::pipe_reader_t::process_terminate_ack ()
+{
+    //  Ask dispatcher to deallocate the pipe.
+    destroy_pipe (pipe);
+}
-- 
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