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著名的密码库Crypto++的文档 C++语言的杰作。程序员必备。

<a name="l00096"></a>00096         {
<a name="l00097"></a>00097                 <span class="keywordflow">if</span> (m_lastResult == 0)
<a name="l00098"></a>00098                         m_eofReceived = <span class="keyword">true</span>;
<a name="l00099"></a>00099         }
<a name="l00100"></a>00100         <span class="keywordflow">else</span>
<a name="l00101"></a>00101         {
<a name="l00102"></a>00102                 <span class="keywordflow">switch</span> (GetLastError())
<a name="l00103"></a>00103                 {
<a name="l00104"></a>00104                 <span class="keywordflow">default</span>:
<a name="l00105"></a>00105                         <a class="code" href="class_windows_pipe.html#1fef189e62486afe4dbc03156ca67c50">CheckAndHandleError</a>(<span class="stringliteral">"ReadFile"</span>, <span class="keyword">false</span>);
<a name="l00106"></a>00106                 <span class="keywordflow">case</span> ERROR_BROKEN_PIPE:
<a name="l00107"></a>00107                 <span class="keywordflow">case</span> ERROR_HANDLE_EOF:
<a name="l00108"></a>00108                         m_lastResult = 0;
<a name="l00109"></a>00109                         m_eofReceived = <span class="keyword">true</span>;
<a name="l00110"></a>00110                         <span class="keywordflow">break</span>;
<a name="l00111"></a>00111                 <span class="keywordflow">case</span> ERROR_IO_PENDING:
<a name="l00112"></a>00112                         m_resultPending = <span class="keyword">true</span>;
<a name="l00113"></a>00113                 }
<a name="l00114"></a>00114         }
<a name="l00115"></a>00115         <span class="keywordflow">return</span> !m_resultPending;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 
<a name="l00118"></a><a class="code" href="class_windows_pipe_receiver.html#44a3dbb7ef3161d84731c3c320eaa33a">00118</a> <span class="keywordtype">void</span> <a class="code" href="class_windows_pipe_receiver.html#44a3dbb7ef3161d84731c3c320eaa33a" title="put wait objects into container">WindowsPipeReceiver::GetWaitObjects</a>(<a class="code" href="class_wait_object_container.html" title="container of wait objects">WaitObjectContainer</a> &amp;container, <a class="code" href="class_call_stack.html">CallStack</a> <span class="keyword">const</span>&amp; callStack)
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120         <span class="keywordflow">if</span> (m_resultPending)
<a name="l00121"></a>00121                 container.<a class="code" href="class_wait_object_container.html#9ce9ba96948923609861455027da7830">AddHandle</a>(m_event, <a class="code" href="class_call_stack.html">CallStack</a>(<span class="stringliteral">"WindowsPipeReceiver::GetWaitObjects() - result pending"</span>, &amp;callStack));
<a name="l00122"></a>00122         <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!m_eofReceived)
<a name="l00123"></a>00123                 container.<a class="code" href="class_wait_object_container.html#ce9c529ebb1956ee2cb9121bdf30402d">SetNoWait</a>(<a class="code" href="class_call_stack.html">CallStack</a>(<span class="stringliteral">"WindowsPipeReceiver::GetWaitObjects() - result ready"</span>, &amp;callStack));
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 
<a name="l00126"></a><a class="code" href="class_windows_pipe_receiver.html#c8a50aca57f1f027fa1d52b1c8161cf5">00126</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_windows_pipe_receiver.html#c8a50aca57f1f027fa1d52b1c8161cf5">WindowsPipeReceiver::GetReceiveResult</a>()
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128         <span class="keywordflow">if</span> (m_resultPending)
<a name="l00129"></a>00129         {
<a name="l00130"></a>00130                 HANDLE h = GetHandle();
<a name="l00131"></a>00131                 <span class="keywordflow">if</span> (GetOverlappedResult(h, &amp;m_overlapped, &amp;m_lastResult, <span class="keyword">false</span>))
<a name="l00132"></a>00132                 {
<a name="l00133"></a>00133                         <span class="keywordflow">if</span> (m_lastResult == 0)
<a name="l00134"></a>00134                                 m_eofReceived = <span class="keyword">true</span>;
<a name="l00135"></a>00135                 }
<a name="l00136"></a>00136                 <span class="keywordflow">else</span>
<a name="l00137"></a>00137                 {
<a name="l00138"></a>00138                         <span class="keywordflow">switch</span> (GetLastError())
<a name="l00139"></a>00139                         {
<a name="l00140"></a>00140                         <span class="keywordflow">default</span>:
<a name="l00141"></a>00141                                 <a class="code" href="class_windows_pipe.html#1fef189e62486afe4dbc03156ca67c50">CheckAndHandleError</a>(<span class="stringliteral">"GetOverlappedResult"</span>, <span class="keyword">false</span>);
<a name="l00142"></a>00142                         <span class="keywordflow">case</span> ERROR_BROKEN_PIPE:
<a name="l00143"></a>00143                         <span class="keywordflow">case</span> ERROR_HANDLE_EOF:
<a name="l00144"></a>00144                                 m_lastResult = 0;
<a name="l00145"></a>00145                                 m_eofReceived = <span class="keyword">true</span>;
<a name="l00146"></a>00146                         }
<a name="l00147"></a>00147                 }
<a name="l00148"></a>00148                 m_resultPending = <span class="keyword">false</span>;
<a name="l00149"></a>00149         }
<a name="l00150"></a>00150         <span class="keywordflow">return</span> m_lastResult;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152 
<a name="l00153"></a>00153 <span class="comment">// *************************************************************</span>
<a name="l00154"></a>00154 
<a name="l00155"></a><a class="code" href="class_windows_pipe_sender.html#05ac85d06100e5cd2ce073f7856ca82e">00155</a> <a class="code" href="class_windows_pipe_sender.html#05ac85d06100e5cd2ce073f7856ca82e">WindowsPipeSender::WindowsPipeSender</a>()
<a name="l00156"></a>00156         : m_resultPending(false), m_lastResult(0)
<a name="l00157"></a>00157 {
<a name="l00158"></a>00158         m_event.<a class="code" href="class_windows_handle.html#6f1053e346d9c41fe13df20c59624feb">AttachHandle</a>(CreateEvent(NULL, <span class="keyword">true</span>, <span class="keyword">false</span>, NULL), <span class="keyword">true</span>);
<a name="l00159"></a>00159         <a class="code" href="class_windows_pipe.html#1fef189e62486afe4dbc03156ca67c50">CheckAndHandleError</a>(<span class="stringliteral">"CreateEvent"</span>, m_event.<a class="code" href="class_windows_handle.html#8176ee81240cc1add7184528fde31d91">HandleValid</a>());
<a name="l00160"></a>00160         memset(&amp;m_overlapped, 0, <span class="keyword">sizeof</span>(m_overlapped));
<a name="l00161"></a>00161         m_overlapped.hEvent = m_event;
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 
<a name="l00164"></a><a class="code" href="class_windows_pipe_sender.html#e75e75f0f4b2ce507b7fcdf10425a37b">00164</a> <span class="keywordtype">void</span> <a class="code" href="class_windows_pipe_sender.html#e75e75f0f4b2ce507b7fcdf10425a37b">WindowsPipeSender::Send</a>(<span class="keyword">const</span> byte* buf, <span class="keywordtype">size_t</span> bufLen)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166         DWORD written = 0;
<a name="l00167"></a>00167         HANDLE h = GetHandle();
<a name="l00168"></a>00168         <span class="comment">// don't queue too much at once, or we might use up non-paged memory</span>
<a name="l00169"></a>00169         <span class="keywordflow">if</span> (WriteFile(h, buf, UnsignedMin((DWORD)128*1024, bufLen), &amp;written, &amp;m_overlapped))
<a name="l00170"></a>00170         {
<a name="l00171"></a>00171                 m_resultPending = <span class="keyword">false</span>;
<a name="l00172"></a>00172                 m_lastResult = written;
<a name="l00173"></a>00173         }
<a name="l00174"></a>00174         <span class="keywordflow">else</span>
<a name="l00175"></a>00175         {
<a name="l00176"></a>00176                 <span class="keywordflow">if</span> (GetLastError() != ERROR_IO_PENDING)
<a name="l00177"></a>00177                         <a class="code" href="class_windows_pipe.html#1fef189e62486afe4dbc03156ca67c50">CheckAndHandleError</a>(<span class="stringliteral">"WriteFile"</span>, <span class="keyword">false</span>);
<a name="l00178"></a>00178 
<a name="l00179"></a>00179                 m_resultPending = <span class="keyword">true</span>;
<a name="l00180"></a>00180         }
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 
<a name="l00183"></a><a class="code" href="class_windows_pipe_sender.html#26b98ea160dc37248cb9934edb8a27ef">00183</a> <span class="keywordtype">void</span> <a class="code" href="class_windows_pipe_sender.html#26b98ea160dc37248cb9934edb8a27ef" title="put wait objects into container">WindowsPipeSender::GetWaitObjects</a>(<a class="code" href="class_wait_object_container.html" title="container of wait objects">WaitObjectContainer</a> &amp;container, <a class="code" href="class_call_stack.html">CallStack</a> <span class="keyword">const</span>&amp; callStack)
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185         <span class="keywordflow">if</span> (m_resultPending)
<a name="l00186"></a>00186                 container.<a class="code" href="class_wait_object_container.html#9ce9ba96948923609861455027da7830">AddHandle</a>(m_event, <a class="code" href="class_call_stack.html">CallStack</a>(<span class="stringliteral">"WindowsPipeSender::GetWaitObjects() - result pending"</span>, &amp;callStack));
<a name="l00187"></a>00187         <span class="keywordflow">else</span>
<a name="l00188"></a>00188                 container.<a class="code" href="class_wait_object_container.html#ce9c529ebb1956ee2cb9121bdf30402d">SetNoWait</a>(<a class="code" href="class_call_stack.html">CallStack</a>(<span class="stringliteral">"WindowsPipeSender::GetWaitObjects() - result ready"</span>, &amp;callStack));
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190 
<a name="l00191"></a><a class="code" href="class_windows_pipe_sender.html#11de9777c369764fc12a2f1dacbaf7e5">00191</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_windows_pipe_sender.html#11de9777c369764fc12a2f1dacbaf7e5">WindowsPipeSender::GetSendResult</a>()
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193         <span class="keywordflow">if</span> (m_resultPending)
<a name="l00194"></a>00194         {
<a name="l00195"></a>00195                 HANDLE h = GetHandle();
<a name="l00196"></a>00196                 BOOL result = GetOverlappedResult(h, &amp;m_overlapped, &amp;m_lastResult, <span class="keyword">false</span>);
<a name="l00197"></a>00197                 <a class="code" href="class_windows_pipe.html#1fef189e62486afe4dbc03156ca67c50">CheckAndHandleError</a>(<span class="stringliteral">"GetOverlappedResult"</span>, result);
<a name="l00198"></a>00198                 m_resultPending = <span class="keyword">false</span>;
<a name="l00199"></a>00199         }
<a name="l00200"></a>00200         <span class="keywordflow">return</span> m_lastResult;
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202 
<a name="l00203"></a>00203 NAMESPACE_END
<a name="l00204"></a>00204 
<a name="l00205"></a>00205 <span class="preprocessor">#endif</span>
</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Fri Jun 1 11:11:26 2007 for Crypto++ by&nbsp;
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