mirror of
https://github.com/sigmasternchen/php-doc-en
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d0827816ad
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@342866 c90b9560-bf6c-de11-be94-00142212c4b1
143 lines
3.6 KiB
XML
143 lines
3.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<phpdoc:classref xml:id="class.volatile" xmlns:phpdoc="http://php.net/ns/phpdoc" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude">
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<title>The Volatile class</title>
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<titleabbrev>Volatile</titleabbrev>
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<partintro>
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<!-- {{{ Volatile intro -->
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<section xml:id="volatile.intro">
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&reftitle.intro;
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<para>
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The <classname>Volatile</classname> class is new to pthreads v3. Its
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introduction is a consequence of the new immutability semantics of
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<classname>Threaded</classname> members of <classname>Threaded</classname>
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classes. The <classname>Volatile</classname> class enables for mutability
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of its <classname>Threaded</classname> members, and is also used to store
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PHP arrays in <classname>Threaded</classname> contexts.
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</para>
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</section>
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<!-- }}} -->
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<section xml:id="volatile.synopsis">
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&reftitle.classsynopsis;
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<!-- {{{ Synopsis -->
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<classsynopsis>
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<ooclass><classname>Volatile</classname></ooclass>
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<!-- {{{ Class synopsis -->
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<classsynopsisinfo>
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<ooclass>
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<classname>Volatile</classname>
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</ooclass>
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<ooclass>
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<modifier>extends</modifier>
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<classname>Threaded</classname>
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</ooclass>
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<oointerface>
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<interfacename>Collectable</interfacename>
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</oointerface>
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<oointerface>
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<interfacename>Traversable</interfacename>
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</oointerface>
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</classsynopsisinfo>
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<classsynopsisinfo role="comment">&InheritedMethods;</classsynopsisinfo>
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<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.threaded')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[not(@role='procedural')])">
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<xi:fallback />
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</xi:include>
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</classsynopsis>
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<!-- }}} -->
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</section>
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<section xml:id="volatile.examples">
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&reftitle.examples;
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<example xml:id="volatile.example.immutable"><!-- {{{ -->
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<title>New immutability semantics of Threaded</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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class Task extends Threaded
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{
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public function __construct()
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{
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$this->data = new Threaded();
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// attempt to overwrite a Threaded property of a Threaded class (invalid)
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$this->data = new StdClass();
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}
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}
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var_dump((new Task())->data);
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]]>
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</programlisting>
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&example.outputs.similar;
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<screen>
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<![CDATA[
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RuntimeException: Threaded members previously set to Threaded objects are immutable, cannot overwrite data in %s:%d
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]]>
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</screen>
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</example><!-- }}} -->
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<example xml:id="volatile.example.basic"><!-- {{{ -->
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<title>Volatile use-case</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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class Task extends Volatile
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{
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public function __construct()
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{
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$this->data = new Threaded();
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// attempt to overwrite a Threaded property of a Volatile class (valid)
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$this->data = new StdClass();
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}
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}
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var_dump((new Task())->data);
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]]>
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</programlisting>
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&example.outputs.similar;
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<screen>
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<![CDATA[
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object(stdClass)#3 (0) {
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}
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]]>
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</screen>
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</example><!-- }}} -->
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</section>
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</partintro>
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</phpdoc:classref>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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