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<hr><h1>EventQueue.h</h1><a href="a00098.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// Package : omniEvents</font>
00002 <font class="comment">// EventQueue.h Created : 2003/12/04</font>
00003 <font class="comment">// Author : Alex Tingle</font>
00004 <font class="comment">//</font>
00005 <font class="comment">// Copyright (C) 2003 Alex Tingle.</font>
00006 <font class="comment">//</font>
00007 <font class="comment">// This file is part of the omniEvents application.</font>
00008 <font class="comment">//</font>
00009 <font class="comment">// omniEvents is free software; you can redistribute it and/or</font>
00010 <font class="comment">// modify it under the terms of the GNU Lesser General Public</font>
00011 <font class="comment">// License as published by the Free Software Foundation; either</font>
00012 <font class="comment">// version 2.1 of the License, or (at your option) any later version.</font>
00013 <font class="comment">//</font>
00014 <font class="comment">// omniEvents is distributed in the hope that it will be useful,</font>
00015 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00016 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00017 <font class="comment">// Lesser General Public License for more details.</font>
00018 <font class="comment">//</font>
00019 <font class="comment">// You should have received a copy of the GNU Lesser General Public</font>
00020 <font class="comment">// License along with this library; if not, write to the Free Software</font>
00021 <font class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00022 <font class="comment">//</font>
00023
00024 <font class="preprocessor">#ifndef OMNIEVENTS__EVENTQUEUE_H</font>
00025 <font class="preprocessor"></font><font class="preprocessor">#define OMNIEVENTS__EVENTQUEUE_H</font>
00026 <font class="preprocessor"></font>
00027 <font class="preprocessor">#ifdef HAVE_CONFIG_H</font>
00028 <font class="preprocessor"></font><font class="preprocessor"># include "<a class="code" href="a00082.html">config.h</a>"</font>
00029 <font class="preprocessor">#endif</font>
00030 <font class="preprocessor"></font>
00031 <font class="preprocessor">#include "<a class="code" href="a00115.html">Orb.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="a00101.html">Filter.h</a>"</font>
00033
00034 <font class="preprocessor">#include <memory></font>
00035
00036 <font class="preprocessor">#ifdef HAVE_STD_STL</font>
00037 <font class="preprocessor"></font><font class="keyword">using</font> <font class="keyword">namespace </font>std;
00038 <font class="preprocessor">#endif</font>
00039 <font class="preprocessor"></font>
00040
00041 <font class="keyword">namespace </font>OmniEvents {
00042
00043
<a name="l00056"></a><a class="code" href="a00049.html">00056</a> <font class="keyword">class </font><a class="code" href="a00049.html">EventQueue</a>
00057 {
00058 <font class="keyword">public</font>:
<a name="l00059"></a><a class="code" href="a00050.html">00059</a> <font class="keyword">class </font><a class="code" href="a00050.html">Reader</a>
00060 {
00061 <font class="keyword">public</font>:
00062 <a class="code" href="a00050.html#a0">Reader</a>(<a class="code" href="a00049.html">EventQueue</a>& eventQueue);
00063 <font class="keywordtype">bool</font> <a class="code" href="a00050.html#a1">moreEvents</a>() <font class="keyword">const</font>;
00064 CORBA::Any* <a class="code" href="a00050.html#a2">nextEvent</a>();
00065 <font class="keyword">private</font>:
<a name="l00066"></a><a class="code" href="a00050.html#o0">00066</a> <a class="code" href="a00049.html">EventQueue</a>& <a class="code" href="a00050.html#o0">_eventQueue</a>;
<a name="l00067"></a><a class="code" href="a00050.html#o1">00067</a> <font class="keywordtype">int</font> <a class="code" href="a00050.html#o1">_next</a>;
00068 };
00069
00070 <a class="code" href="a00049.html#a0">EventQueue</a>(<font class="keywordtype">long</font> size=1023);
00071 <font class="keyword">virtual</font> <a class="code" href="a00049.html#a1">~EventQueue</a>();
<a name="l00072"></a><a class="code" href="a00049.html#a2">00072</a> <font class="keywordtype">void</font> <a class="code" href="a00049.html#a2">setFilter</a>(<a class="code" href="a00051.html">Filter</a>* filter)
00073 {
00074 auto_ptr<Filter> f(filter);
00075 <a class="code" href="a00049.html#o3">_filter</a>=f; <font class="comment">// MS VC++ 6 has no auto_ptr::reset()</font>
00076 }
00077
<a name="l00078"></a><a class="code" href="a00049.html#a3">00078</a> <font class="keyword">inline</font> <font class="keywordtype">void</font> <a class="code" href="a00049.html#a3">append</a>(CORBA::Any* event)
00079 {
00080 <font class="keywordflow">if</font>(!<a class="code" href="a00049.html#o3">_filter</a>.get() || <a class="code" href="a00049.html#o3">_filter</a>->keep(*event))
00081 {
00082 <font class="keyword">delete</font> <a class="code" href="a00049.html#o2">_queue</a>[<a class="code" href="a00049.html#o0">_next</a>];
00083 <a class="code" href="a00049.html#o2">_queue</a>[<a class="code" href="a00049.html#o0">_next</a>]=event;
00084 <a class="code" href="a00049.html#o0">_next</a>=(<a class="code" href="a00049.html#o0">_next</a>+1)%<a class="code" href="a00049.html#o1">_size</a>;
00085 }
00086 }
00087
00088 <font class="keyword">private</font>:
<a name="l00090"></a><a class="code" href="a00049.html#o0">00090</a> <font class="keywordtype">long</font> <a class="code" href="a00049.html#o0">_next</a>;
<a name="l00091"></a><a class="code" href="a00049.html#o1">00091</a> <font class="keywordtype">long</font> <a class="code" href="a00049.html#o1">_size</a>;
<a name="l00092"></a><a class="code" href="a00049.html#o2">00092</a> CORBA::Any** <a class="code" href="a00049.html#o2">_queue</a>;
<a name="l00093"></a><a class="code" href="a00049.html#o3">00093</a> auto_ptr<Filter> <a class="code" href="a00049.html#o3">_filter</a>;
00094
<a name="l00095"></a><a class="code" href="a00049.html#l0">00095</a> <font class="keyword">friend</font> <font class="keyword">class </font><a class="code" href="a00050.html">Reader</a>;
00096 };
00097
00098 }; <font class="comment">// end namespace OmniEvents</font>
00099
00100 <font class="preprocessor">#endif // OMNIEVENTS__EVENTQUEUE_H</font>
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