archived-doc-en/reference/ev/evtimer/createstopped.xml

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<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="evtimer.createstopped">
 <refnamediv>
  <refname>EvTimer::createStopped</refname>
  <refpurpose>Creates EvTimer stopped watcher object</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>final</modifier>
   <modifier>public</modifier>
   <modifier>static</modifier>
   <type>EvTimer</type>
   <methodname>EvTimer::createStopped</methodname>
   <methodparam>
    <type>float</type>
    <parameter>after</parameter>
   </methodparam>
   <methodparam>
    <type>float</type>
    <parameter>repeat</parameter>
   </methodparam>
   <methodparam>
    <type>callable</type>
    <parameter>callback</parameter>
   </methodparam>
   <methodparam choice="opt">
    <type>mixed</type>
    <parameter>data</parameter>
    <initializer>&null;</initializer>
   </methodparam>
   <methodparam choice="opt">
    <type>int</type>
    <parameter>priority</parameter>
    <initializer>0</initializer>
   </methodparam>
  </methodsynopsis>
  <simpara>
   Creates EvTimer stopped watcher object. Unlike
   <methodname>EvTimer::__construct</methodname>,
   this method doesn't start the watcher automatically.
  </simpara>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term>
     <parameter>after</parameter>
    </term>
    <listitem>
     <simpara>
      Configures the timer to trigger after
      <parameter>after</parameter>
      seconds.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term>
     <parameter>repeat</parameter>
    </term>
    <listitem>
     <simpara>
      If repeat is
      <literal>0.0</literal>,
      then it will automatically be stopped once the timeout is reached. If
      it is positive, then the timer will automatically be configured to
      trigger again every repeat seconds later, until stopped manually.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term>
     <parameter>callback</parameter>
    </term>
    <listitem>
     <simpara>
      See
      <link linkend="ev.watcher-callbacks">Watcher callbacks</link>.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term>
     <parameter>data</parameter>
    </term>
    <listitem>
     <simpara>
      Custom data associated with the watcher.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term>
     <parameter>priority</parameter>
    </term>
    <listitem>
     <simpara>
      <link linkend="ev.constants.watcher-pri">Watcher priority</link>
     </simpara>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <simpara>
   Returns EvTimer watcher object on success.
  </simpara>
 </refsect1>
 <refsect1 role="examples">
  &reftitle.examples;
 <example>
   <title>Monotor changes of /var/log/messages. Avoid missing updates by means of one second delay</title>
   <programlisting role="php">
<![CDATA[
<?php
$timer = EvTimer::createStopped(0., 1.02, function ($w) {
    $w->stop();

    $stat = $w->data;

    // 1 second after the most recent change of the file
    printf("Current size: %ld\n", $stat->attr()['size']);
});

$stat = new EvStat("/var/log/messages", 0., function () use ($timer) {
    // Reset timer watcher
    $timer->again();
});

$timer->data = $stat;

Ev::run();
?>
]]>
   </programlisting>
  </example>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member>
    <methodname>EvTimer::__construct</methodname>
   </member>
   <member>
    <classname>EvPeriodic</classname>
   </member>
  </simplelist>
 </refsect1>
</refentry>
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