socket-set-nonblock.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: e50e79746736dbdfbabe9bd3566793b3ddf38f58 Maintainer: songmeifeng Status: ready -->
<refentry xml:id="function.socket-set-nonblock" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>socket_set_nonblock</refname>
  <refpurpose>设置套接字为非阻塞模式</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>socket_set_nonblock</methodname>
   <methodparam><type>Socket</type><parameter>socket</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>socket_set_nonblock</function> 为由 <parameter>socket</parameter> 
   参数指定的套接字设置 <constant>O_NONBLOCK</constant> 标记。
  </para>
  <para>
   当一个操作（例如接收、发送、连接、接受连接……）在一个非阻塞套接字上执行时，脚本在接受到信号或操作处理完成前都不会暂停执行。如果操作会导致阻塞，被调用的函数将失败。
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>socket</parameter></term>
     <listitem>
      <para>
       由 <function>socket_create</function> 或 <function>socket_accept</function> 
       创建的 <classname>Socket</classname> 实例。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     &sockets.changelog.socket-param;
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>socket_set_nonblock</function> 示例</title>
    <programlisting role="php">
<![CDATA[
<?php
$socket = socket_create_listen(1223);
socket_set_nonblock($socket);

socket_accept($socket);
?>
]]>
    </programlisting>
    <para>
     此示例在 1223 端口上创建了监听所有接口的套接字，并把此套接字设置为 <constant>O_NONBLOCK</constant> 
     模式。除非此时恰好有待处理的连接，否则 <function>socket_accept</function> 将立即失败。
    </para>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>socket_set_block</function></member>
    <member><function>socket_set_option</function></member>
    <member><function>stream_set_blocking</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->