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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>smartptr.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> </center><hr><h1>smartptr.h</h1><a href="smartptr_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="preprocessor">#ifndef _PSMARTPTR_H</span>00002 <span class="preprocessor"></span><span class="preprocessor">#define _PSMARTPTR_H</span>00003 <span class="preprocessor"></span>00004 <span class="preprocessor">#include <ptlib.h></span>00005 <span class="preprocessor">#include <<a class="code" href="object_8h.html">ptlib/object.h</a>></span>00006 00008 <span class="comment">// "Smart" pointers.</span>00009 <a name="l00019"></a><a class="code" href="classPSmartObject.html">00019</a> <span class="keyword">class </span><a class="code" href="classPSmartObject.html">PSmartObject</a> : <span class="keyword">public</span> <a class="code" href="classPObject.html">PObject</a>00020 {00021 <a class="code" href="object_8h.html#a27">PCLASSINFO</a>(<a class="code" href="classPSmartObject.html">PSmartObject</a>, <a class="code" href="classPObject.html">PObject</a>);00022 00023 <span class="keyword">public</span>:<a name="l00027"></a><a class="code" href="classPSmartObject.html#a0">00027</a> <a class="code" href="classPSmartObject.html#a0">PSmartObject</a>()00028 :<a class="code" href="classPSmartObject.html#n0">referenceCount</a>(1) { }00029 00030 <span class="keyword">protected</span>:<a name="l00034"></a><a class="code" href="classPSmartObject.html#n0">00034</a> <a class="code" href="classPAtomicInteger.html">PAtomicInteger</a> <a class="code" href="classPSmartObject.html#n0">referenceCount</a>;00035 00036 <a name="l00037"></a><a class="code" href="classPSmartObject.html#l0">00037</a> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classPSmartPointer.html">PSmartPointer</a>;00038 };00039 00040 <a name="l00055"></a><a class="code" href="classPSmartPointer.html">00055</a> <span class="keyword">class </span><a class="code" href="classPSmartPointer.html">PSmartPointer</a> : <span class="keyword">public</span> <a class="code" href="classPObject.html">PObject</a>00056 {00057 <a class="code" href="object_8h.html#a27">PCLASSINFO</a>(<a class="code" href="classPSmartPointer.html">PSmartPointer</a>, <a class="code" href="classPObject.html">PObject</a>);00058 00059 <span class="keyword">public</span>:<a name="l00065"></a><a class="code" href="classPSmartPointer.html#z363_0">00065</a> <a class="code" href="classPSmartPointer.html#z363_0">PSmartPointer</a>(00066 <a class="code" href="classPSmartObject.html">PSmartObject</a> * obj = NULL 00067 ) { <a class="code" href="classPSmartPointer.html#n0">object</a> = obj; }00068 00073 <a class="code" href="classPSmartPointer.html#z363_0">PSmartPointer</a>(00074 <span class="keyword">const</span> <a class="code" href="classPSmartPointer.html">PSmartPointer</a> & ptr 00075 );00076 00081 <span class="keyword">virtual</span> <a class="code" href="classPSmartPointer.html#z363_2">~PSmartPointer</a>();00082 00093 <a class="code" href="classPSmartPointer.html">PSmartPointer</a> & <a class="code" href="classPSmartPointer.html#z363_3">operator=</a>(00094 <span class="keyword">const</span> <a class="code" href="classPSmartPointer.html">PSmartPointer</a> & ptr 00095 );00097 00109 <span class="keyword">virtual</span> <a class="code" href="classPObject.html#z199_0">Comparison</a> <a class="code" href="classPSmartPointer.html#z365_0">Compare</a>(00110 <span class="keyword">const</span> <a class="code" href="classPObject.html">PObject</a> & obj <span class="comment">// Other smart pointer to compare against.</span>00111 ) <span class="keyword">const</span>;00113 <a name="l00122"></a><a class="code" href="classPSmartPointer.html#z367_0">00122</a> BOOL <a class="code" href="classPSmartPointer.html#z367_0">IsNULL</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classPSmartPointer.html#n0">object</a> == NULL; }00123 <a name="l00129"></a><a class="code" href="classPSmartPointer.html#z367_1">00129</a> <a class="code" href="classPSmartObject.html">PSmartObject</a> * <a class="code" href="classPSmartPointer.html#z367_1">GetObject</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classPSmartPointer.html#n0">object</a>; }00131 00132 <span class="keyword">protected</span>:00133 <span class="comment">// Member variables</span><a name="l00135"></a><a class="code" href="classPSmartPointer.html#n0">00135</a> <span class="comment"> PSmartObject * object;</span>00136 };00137 00138 <a name="l00155"></a><a class="code" href="smartptr_8h.html#a0">00155</a> <span class="preprocessor">#define PSMART_POINTER_INFO(cls, par, type) \</span>00156 <span class="preprocessor"> PCLASSINFO(cls, par) \</span>00157 <span class="preprocessor"> public: \</span>00158 <span class="preprocessor"> type * operator->() const \</span>00159 <span class="preprocessor"> { return (type *)PAssertNULL(object); } \</span>00160 <span class="preprocessor"> type & operator*() const \</span>00161 <span class="preprocessor"> { return *(type *)PAssertNULL(object); } \</span>00162 <span class="preprocessor"> operator type*() const \</span>00163 <span class="preprocessor"> { return (type *)object; }</span>00164 <span class="preprocessor"></span>00165 <span class="preprocessor">#endif</span>00166 <span class="preprocessor"></span></pre></div><hr><address style="align: right;"><small>Generated on Wed Sep 29 22:44:12 2004 for PWLib by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.18 </small></address></body></html>⌨️ 快捷键说明
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