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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html><head>
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<title>liboop: oop_sys_new(), oop_sys_delete()</title>
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<link rel="stylesheet" type="text/css" href="style.css">
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</head><body>
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<h2>oop_sys_new(), oop_sys_delete()</h2>
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<pre>
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#include &lt;oop.h&gt;
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/* <em>Create and destroy a system event source.</em> */
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oop_source_sys *oop_sys_new(void);
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void oop_sys_delete(oop_source_sys *sys);
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</pre>
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<h3>Arguments.</h3>
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<dl>
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<dt><b>oop_source_sys *sys</b>
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<dd>The event source to deallocate and destroy.
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</dl>
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<h3>Description.</h3>
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<dl>
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<dt><b>oop_sys_new</b>
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<dd>Create a new system event source.  The system event source implements the
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event source interface and manages a select() loop.  Once the system event
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source is created, use <a href="oop_sys_source.html">oop_sys_source()</a> to
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access the event source interface (which lets you register event sinks), and
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<a href="oop_sys_run.html">oop_sys_run()</a> or
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<a href="oop_sys_run.html">oop_sys_run_once()</a> to actually process events.
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More than one system event source can exist, though it is rarely useful to do
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so (since only one may be active at a time).<p>
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If a malloc failure occurs creating the system event source, NULL is returned.
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It is up to the caller to handle this failure.<p>
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<dt><b>oop_sys_delete</b>
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<dd>Destroy the system event source <em>sys</em>.  This frees all resources
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associated with the event source.  The source cannot have any active callbacks
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(event sinks) associated with it.<p>
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</dl>
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<hr><a href="ref.html">liboop reference</a></body></html>