php-doc-en/reference/sync/syncreaderwriter/writelock.xml
2014-07-07 15:33:45 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="syncreaderwriter.writelock" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>SyncReaderWriter::writelock</refname>
<refpurpose>Waits for an exclusive write lock</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>bool</type><methodname>SyncReaderWriter::writelock</methodname>
<methodparam choice="opt"><type>integer</type><parameter>wait</parameter></methodparam>
</methodsynopsis>
<para>
Obtains an exclusive write lock on a SyncReaderWriter object.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>wait</parameter></term>
<listitem>
<para>
The number of milliseconds to wait for a lock.
A value of -1 is infinite.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
A boolean of TRUE if the lock was obtained, FALSE otherwise.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>SyncReaderWriter::writelock</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$readwrite = new SyncReaderWriter("FileCacheLock");
$readwrite->writelock();
/* ... */
$readwrite->writeunlock();
?>
]]>
</programlisting>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>SyncReaderWriter::writeunlock</methodname></member>
</simplelist>
</refsect1>
</refentry>
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