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<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="evloop.run" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>EvLoop::run</refname>
<refpurpose>Begin checking for events and calling callbacks for the loop</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier>
<type>void</type>
<methodname>EvLoop::run</methodname>
<methodparam
choice="opt">
<type>int</type>
<parameter>flags</parameter>
<initializer>0</initializer>
</methodparam>
</methodsynopsis>
<para>
Begin checking for events and calling callbacks for the current event loop.
Returns when a callback calls
<methodname>Ev::stop</methodname>
method, or the flags are nonzero(in which case the return value is true) or
when there are no active watchers which reference the loop(
<methodname>EvWatcher::keepalive</methodname>
is &true;), in which case the return value will be &false;. The return
value can generally be interpreted as
<emphasis>if &true;, there is more work left
to do</emphasis>
.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term>
<parameter>flags</parameter>
</term>
<listitem>
<para>
Optional parameter
<parameter>flags</parameter>
can be one of the following:
<table>
<title>
List for possible values of <parameter>flags</parameter>
</title>
<tgroup cols="2">
<thead>
<row>
<entry>
<parameter>flags</parameter>
</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry>
<literal>0</literal>
</entry>
<entry>The default behavior described above</entry>
</row>
<row>
<entry>
<constant>Ev::RUN_ONCE</constant>
</entry>
<entry>Block at most one(wait, but don't loop)</entry>
</row>
<row>
<entry>
<constant>Ev::RUN_NOWAIT</constant>
</entry>
<entry>Don't block at all(fetch/handle events, but don't wait)</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<para>
See
<link linkend="ev.constants.run-flags">the run flag
constants</link>
.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member>
<methodname>EvLoop::stop</methodname>
</member>
<member>
<methodname>Ev::run</methodname>
</member>
</simplelist>
</refsect1>
</refentry>
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