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<tr class="memitem:namespaceXrdSys_1_1IOEvents"><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceXrdSys_1_1IOEvents.html">IOEvents</a></td></tr>
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<p>The classes here define a simple I/O event polling architecture suitable for use with non-blocking devices. As it implements an event model, it is not considered a high performance interface. For increased performance, you need to use multiple polling event loops which effectively implements a limited thread model for handling events. The implementation here is similar to libEvent with better handling of timeouts and I/O polling resumption.</p>
<p>While, channels are multi-thread safe, they cannot interlock with the state of their file descriptor. You must first disable (via SetFD()) or delete the channel before closing its associated file descriptor. This is the only safe way to keep channels and their file descriptors synchronized. </p>
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