<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>GNU Radio 3.2.2 C++ API: ring.h Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.3 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">GNU Radio 3.2.2 C++ API</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
initNavTree('ring_8h.html','');
</script>
<div id="doc-content">
<div class="header">
<div class="headertitle">
<h1>ring.h</h1> </div>
</div>
<div class="contents">
<a href="ring_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c++ -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright 2008 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment"> * </span>
<a name="l00005"></a>00005 <span class="comment"> * This file is part of GNU Radio</span>
<a name="l00006"></a>00006 <span class="comment"> * </span>
<a name="l00007"></a>00007 <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span>
<a name="l00008"></a>00008 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00009"></a>00009 <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00010"></a>00010 <span class="comment"> * any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> * </span>
<a name="l00012"></a>00012 <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00015"></a>00015 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * You should have received a copy of the GNU General Public License along</span>
<a name="l00018"></a>00018 <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span>
<a name="l00019"></a>00019 <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span>
<a name="l00020"></a>00020 <span class="comment"> */</span>
<a name="l00021"></a>00021 <span class="preprocessor">#ifndef INCLUDED_RING_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_RING_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <gnuradio/omnithread.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <stddef.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <vector></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <boost/shared_ptr.hpp></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keyword">namespace </span>usrp2 {
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">class </span>ring;
<a name="l00032"></a>00032 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr<ring></a> ring_sptr;
<a name="l00033"></a>00033
<a name="l00034"></a><a class="code" href="classusrp2_1_1ring.html">00034</a> <span class="keyword">class </span><a class="code" href="classusrp2_1_1ring.html">ring</a>
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <span class="keyword">private</span>:
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keywordtype">size_t</span> d_max;
<a name="l00039"></a>00039 <span class="keywordtype">size_t</span> d_read_ind;
<a name="l00040"></a>00040 <span class="keywordtype">size_t</span> d_write_ind;
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">struct </span>ring_desc
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keywordtype">void</span> *d_base;
<a name="l00045"></a>00045 <span class="keywordtype">size_t</span> d_len;
<a name="l00046"></a>00046 };
<a name="l00047"></a>00047 <a class="code" href="classstd_1_1vector.html">std::vector<ring_desc></a> d_ring;
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <a class="code" href="classomni__mutex.html">omni_mutex</a> d_mutex;
<a name="l00050"></a>00050 <a class="code" href="classomni__condition.html">omni_condition</a> d_not_empty;
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keywordtype">void</span> inc_read_ind()
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keywordflow">if</span> (d_read_ind + 1 >= d_max)
<a name="l00055"></a>00055 d_read_ind = 0;
<a name="l00056"></a>00056 <span class="keywordflow">else</span>
<a name="l00057"></a>00057 d_read_ind = d_read_ind + 1;
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keywordtype">void</span> inc_write_ind()
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (d_write_ind + 1 >= d_max)
<a name="l00063"></a>00063 d_write_ind = 0;
<a name="l00064"></a>00064 <span class="keywordflow">else</span>
<a name="l00065"></a>00065 d_write_ind = d_write_ind + 1;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordtype">bool</span> empty()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_read_ind == d_write_ind; }
<a name="l00069"></a>00069 <span class="keywordtype">bool</span> full()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> (d_write_ind+1)%d_max == d_read_ind; }
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keyword">public</span>:
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <a class="code" href="classusrp2_1_1ring.html#a52d58f69ede431315f424c98da40e61f">ring</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> entries);
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keywordtype">void</span> <a class="code" href="classusrp2_1_1ring.html#a645c7168e6092be2d7a5d629ad6b8e04">wait_for_not_empty</a>();
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="keywordtype">bool</span> <a class="code" href="classusrp2_1_1ring.html#a0ecf8df1aa8a035b2ad403fb77279ac1">enqueue</a>(<span class="keywordtype">void</span> *p, <span class="keywordtype">size_t</span> len);
<a name="l00078"></a>00078 <span class="keywordtype">bool</span> <a class="code" href="classusrp2_1_1ring.html#a42b6a68e92b63d6816458abf5e0e3d1f">dequeue</a>(<span class="keywordtype">void</span> **p, <span class="keywordtype">size_t</span> *len);
<a name="l00079"></a>00079 };
<a name="l00080"></a>00080
<a name="l00081"></a>00081 } <span class="comment">// namespace usrp2</span>
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_RING_H */</span>
</pre></div></div>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="ring_8h.html">ring.h</a> </li>
<li class="footer">Generated on Thu Feb 17 2011 for GNU Radio 3.2.2 C++ API by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </li>
</ul>
</div>
</body>
</html>
distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
6e7a2755bd78c9deedab199b86e675f3
>
files
>
6807
