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<h1>AtomicInt.hpp</h1>  </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This file is part of Raul.</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2007-2009 David Robillard &lt;http://drobilla.net&gt;</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Raul is free software; you can redistribute it and/or modify it under the</span>
<a name="l00005"></a>00005 <span class="comment"> * terms of the GNU General Public License as published by the Free Software</span>
<a name="l00006"></a>00006 <span class="comment"> * Foundation; either version 2 of the License, or (at your option) any later</span>
<a name="l00007"></a>00007 <span class="comment"> * version.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * Raul is distributed in the hope that it will be useful, but WITHOUT ANY</span>
<a name="l00010"></a>00010 <span class="comment"> * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS</span>
<a name="l00011"></a>00011 <span class="comment"> * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.</span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * You should have received a copy of the GNU General Public License along</span>
<a name="l00014"></a>00014 <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span>
<a name="l00015"></a>00015 <span class="comment"> * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00016"></a>00016 <span class="comment"> */</span>
<a name="l00017"></a>00017 
<a name="l00018"></a>00018 <span class="preprocessor">#ifndef RAUL_ATOMIC_INT_HPP</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#define RAUL_ATOMIC_INT_HPP</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;glib.h&gt;</span>
<a name="l00022"></a>00022 
<a name="l00023"></a>00023 <span class="keyword">namespace </span>Raul {
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 
<a name="l00026"></a>00026 <span class="keyword">class </span>AtomicInt {
<a name="l00027"></a>00027 <span class="keyword">public</span>:
<a name="l00028"></a>00028     <span class="keyword">inline</span> AtomicInt(<span class="keywordtype">int</span> val)
<a name="l00029"></a>00029         { g_atomic_int_set(static_cast&lt;volatile gint*&gt;(&amp;_val), val); }
<a name="l00030"></a>00030 
<a name="l00031"></a>00031     <span class="keyword">inline</span> AtomicInt(<span class="keyword">const</span> AtomicInt&amp; copy)
<a name="l00032"></a>00032         { g_atomic_int_set(static_cast&lt;volatile gint*&gt;(&amp;_val), copy.get()); }
<a name="l00033"></a>00033 
<a name="l00034"></a>00034     <span class="keyword">inline</span> <span class="keywordtype">int</span> <span class="keyword">get</span>() <span class="keyword">const</span>
<a name="l00035"></a>00035         { <span class="keywordflow">return</span> g_atomic_int_get(static_cast&lt;volatile gint*&gt;(&amp;_val)); }
<a name="l00036"></a>00036 
<a name="l00037"></a>00037     <span class="keyword">inline</span> <span class="keywordtype">void</span> operator=(<span class="keywordtype">int</span> val)
<a name="l00038"></a>00038         { g_atomic_int_set(static_cast&lt;volatile gint*&gt;(&amp;_val), val); }
<a name="l00039"></a>00039 
<a name="l00040"></a>00040     <span class="keyword">inline</span> <span class="keywordtype">void</span> operator+=(<span class="keywordtype">int</span> val)
<a name="l00041"></a>00041         { g_atomic_int_add(static_cast&lt;volatile gint*&gt;(&amp;_val), val); }
<a name="l00042"></a>00042 
<a name="l00043"></a>00043     <span class="keyword">inline</span> <span class="keywordtype">void</span> operator-=(<span class="keywordtype">int</span> val)
<a name="l00044"></a>00044         { g_atomic_int_add(static_cast&lt;volatile gint*&gt;(&amp;_val), -val); }
<a name="l00045"></a>00045 
<a name="l00046"></a>00046     <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator==(<span class="keywordtype">int</span> val)<span class="keyword"> const</span>
<a name="l00047"></a>00047 <span class="keyword">        </span>{ <span class="keywordflow">return</span> <span class="keyword">get</span>() == val; }
<a name="l00048"></a>00048 
<a name="l00049"></a>00049     <span class="keyword">inline</span> <span class="keywordtype">int</span> operator+(<span class="keywordtype">int</span> val)<span class="keyword"> const</span>
<a name="l00050"></a>00050 <span class="keyword">        </span>{ <span class="keywordflow">return</span> <span class="keyword">get</span>() + val; }
<a name="l00051"></a>00051 
<a name="l00052"></a>00052     <span class="keyword">inline</span> AtomicInt&amp; operator++() <span class="comment">// prefix</span>
<a name="l00053"></a>00053         { g_atomic_int_inc(static_cast&lt;volatile gint*&gt;(&amp;_val)); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
<a name="l00054"></a>00054 
<a name="l00055"></a>00055     <span class="keyword">inline</span> AtomicInt&amp; operator--() <span class="comment">// prefix</span>
<a name="l00056"></a>00056         { g_atomic_int_add(static_cast&lt;volatile gint*&gt;(&amp;_val), -1); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
<a name="l00057"></a>00057 
<a name="l00061"></a>00061     <span class="keyword">inline</span> <span class="keywordtype">bool</span> compare_and_exchange(<span class="keywordtype">int</span> old, <span class="keywordtype">int</span> val)
<a name="l00062"></a>00062         { <span class="keywordflow">return</span> g_atomic_int_compare_and_exchange(static_cast&lt;volatile gint*&gt;(&amp;_val), old, val); }
<a name="l00063"></a>00063 
<a name="l00067"></a>00067     <span class="keyword">inline</span> <span class="keywordtype">int</span> exchange_and_add(<span class="keywordtype">int</span> val)
<a name="l00068"></a>00068         { <span class="keywordflow">return</span> g_atomic_int_exchange_and_add(static_cast&lt;volatile gint*&gt;(&amp;_val), val); }
<a name="l00069"></a>00069 
<a name="l00073"></a>00073     <span class="keyword">inline</span> <span class="keywordtype">bool</span> decrement_and_test()
<a name="l00074"></a>00074         { <span class="keywordflow">return</span> g_atomic_int_dec_and_test(static_cast&lt;volatile gint*&gt;(&amp;_val)); }
<a name="l00075"></a>00075 
<a name="l00076"></a>00076 <span class="keyword">private</span>:
<a name="l00077"></a>00077     <span class="keyword">volatile</span> <span class="keyword">mutable</span> <span class="keywordtype">int</span> _val;
<a name="l00078"></a>00078 };
<a name="l00079"></a>00079 
<a name="l00080"></a>00080 
<a name="l00081"></a>00081 } <span class="comment">// namespace Raul</span>
<a name="l00082"></a>00082 
<a name="l00083"></a>00083 <span class="preprocessor">#endif // RAUL_ATOMIC_INT_HPP</span>
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