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+    <head>
+        <title>Apache Qpid : SharedPtr</title>
+	    <link rel="stylesheet" href="styles/site.css" type="text/css" />
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+	    <table class="pagecontent" border="0" cellpadding="0" cellspacing="0" width="100%" bgcolor="#ffffff">
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+				    <div class="pageheader">
+					    <span class="pagetitle">
+                            Apache Qpid : SharedPtr
+                                                    </span>
+				    </div>
+				    <div class="pagesubheading">
+					    This page last changed on Oct 19, 2006 by <font color="#0050B2">mmccorma</font>.
+				    </div>
+
+				    <p>std::tr1::shared_ptr is an almost-standard smart pointer template that<br/>
+provides unintrusive reference-counting semantics for any class. It<br/>
+almost makes memory management too easy for a C++ programmer.</p>
+
+<p>It's available in g++ and some other compilers by default. There are<br/>
+several open source implementations if we ever port to a compiler that<br/>
+doesn't have it.</p>
+
+<p>The golde rule: if class Foo has shared ownership then never <em>ever</em><br/>
+write <tt>Foo*</tt>. Anywhere. Ever. Use shared_ptr in all function<br/>
+signatures and variables, use std::tr1::dynamic_pointer_cast and<br/>
+friends for casting.</p>
+
+<p>Qpid will use it for all classes with shared ownership semantics,<br/>
+enforced by private constructors and static factory functions. We'll<br/>
+also adopt the convention to typedef shared_ptr within the class for<br/>
+convenience. E.g.</p>
+
+<div class="code"><div class="codeContent">
+<pre class="code-java">class Foo {
+   Foo() { ... }
+
+ <span class="code-keyword">public</span>:
+   typedef std::tr1::shared_ptr&lt;Foo&gt; shared_ptr;
+   <span class="code-keyword">static</span> shared_ptr create() { <span class="code-keyword">return</span> <span class="code-keyword">new</span> Foo() }
+   <span class="code-comment">// .. a create <span class="code-keyword">for</span> each constructor.
+</span>}
+
+Foo::shared_ptr p = Foo::create();  <span class="code-comment">// etc...</span></pre>
+</div></div>
+
+
+<p>There's a good article at <a href="http://www.boost.org/libs/smart_ptr/sp_techniques.html" title="Visit page outside Confluence">http://www.boost.org/libs/smart_ptr/sp_techniques.html</a>.</p>
+
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+		    <tr>
+			    <td align="center"><font color="grey">Document generated by Confluence on Apr 22, 2008 02:47</font></td>
+		    </tr>
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