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<b>- Cal3D 0.11 API Reference -</b>
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<h1>refcounted.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CAL_REF_COUNTED_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CAL_REF_COUNTED_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004
<a name="l00005"></a>00005 <span class="preprocessor">#include "cal3d/platform.h"</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="keyword">namespace </span>cal3d
<a name="l00009"></a>00009 {
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="keyword">template</span><<span class="keyword">typename</span> T> <span class="keyword">class </span>RefPtr;
<a name="l00012"></a>00012
<a name="l00028"></a><a class="code" href="classcal3d_1_1RefCounted.html">00028</a> <span class="keyword">class </span>CAL3D_API <a class="code" href="classcal3d_1_1RefCounted.html" title="Derive from RefCounted to make your class have reference-counted lifetime semantics...">RefCounted</a>
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 <span class="keyword">template</span><<span class="keyword">typename</span> T> <span class="keyword">friend</span> T* explicitIncRef(T* p);
<a name="l00031"></a>00031 <span class="keyword">friend</span> <span class="keywordtype">void</span> explicitDecRef(<a class="code" href="classcal3d_1_1RefCounted.html" title="Derive from RefCounted to make your class have reference-counted lifetime semantics...">RefCounted</a>* p);
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keyword">protected</span>:
<a name="l00034"></a>00034 <a class="code" href="classcal3d_1_1RefCounted.html" title="Derive from RefCounted to make your class have reference-counted lifetime semantics...">RefCounted</a>()
<a name="l00035"></a>00035 : m_refCount(0)
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038
<a name="l00046"></a><a class="code" href="classcal3d_1_1RefCounted.html#9cf6ab695ca641a9781b4aa1d331d5ea">00046</a> <span class="keyword">virtual</span> ~<a class="code" href="classcal3d_1_1RefCounted.html" title="Derive from RefCounted to make your class have reference-counted lifetime semantics...">RefCounted</a>()
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 assert(m_refCount == 0 && <span class="stringliteral">"_refCount nonzero in destructor"</span>);
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">// Must use RefPtr instead of manually calling incRef() and decRef().</span>
<a name="l00052"></a>00052 <span class="keyword">private</span>:
<a name="l00053"></a>00053 <span class="keywordtype">void</span> incRef()
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 assert(m_refCount >= 0 && <span class="stringliteral">"_refCount is less than zero in incRef()!"</span>);
<a name="l00056"></a>00056 ++m_refCount;
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00063"></a>00063 <span class="keywordtype">void</span> decRef()
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 assert(m_refCount > 0 &&
<a name="l00066"></a>00066 <span class="stringliteral">"_refCount is less than or equal to zero in decRef()!"</span>);
<a name="l00067"></a>00067 <span class="keywordflow">if</span> (--m_refCount == 0)
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 <span class="keyword">delete</span> <span class="keyword">this</span>;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">public</span>:
<a name="l00074"></a>00074 <span class="keywordtype">int</span> getRefCount()<span class="keyword"> const</span>
<a name="l00075"></a>00075 <span class="keyword"> </span>{
<a name="l00076"></a>00076 <span class="keywordflow">return</span> m_refCount;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keyword">private</span>:
<a name="l00080"></a>00080 <span class="comment">// Copying a RefCounted object must be done manually by the</span>
<a name="l00081"></a>00081 <span class="comment">// subclass. Otherwise the refCount gets copied too, and</span>
<a name="l00082"></a>00082 <span class="comment">// that's Bad.</span>
<a name="l00083"></a>00083 RefCounted(<span class="keyword">const</span> RefCounted& rhs);
<a name="l00084"></a>00084 RefCounted& operator=(<span class="keyword">const</span> RefCounted& rhs);
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="keyword">private</span>:
<a name="l00087"></a>00087 <span class="keywordtype">int</span> m_refCount;
<a name="l00088"></a>00088 };
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="keyword">template</span><<span class="keyword">typename</span> T>
<a name="l00091"></a>00091 T* explicitIncRef(T* p)
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 p->incRef();
<a name="l00094"></a>00094 <span class="keywordflow">return</span> p;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keyword">inline</span> <span class="keywordtype">void</span> explicitDecRef(RefCounted* p)
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099 p->decRef();
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="preprocessor">#endif</span>
</pre></div></div>
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