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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.eio-grp-add" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>eio_grp_add</refname>
<refpurpose>Adds a request to the request group</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>void</type><methodname>eio_grp_add</methodname>
<methodparam><type>resource</type><parameter>grp</parameter></methodparam>
<methodparam><type>resource</type><parameter>req</parameter></methodparam>
</methodsynopsis>
<para>
<function>eio_grp_add</function> adds a request to the request group.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>grp</parameter></term>
<listitem>
<para>
The request group resource returned by <function>eio_grp</function>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>req</parameter></term>
<listitem>
<para>
The request resource
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title>Grouping requests</title>
<programlisting role="php"><![CDATA[
<?php
/*
* Create a group request to open, read and close a file
*/
// Create temporary file and write some bytes to it
$temp_filename = dirname(__FILE__) ."/eio-file.tmp";
$fp = fopen($temp_filename, "w");
fwrite($fp, "some data");
fclose($fp);
/* Is called when the group requests are done */
function my_grp_done($data, $result) {
var_dump($result == 0);
@unlink($data);
}
/* Is called when eio_open() done */
function my_grp_file_opened_callback($data, $result) {
global $grp;
// $result should contain the file descriptor
var_dump($result > 0);
// Create eio_read() request and add it to the group
// Pass file descriptor to the callback
$req = eio_read($result, 4, 0,
EIO_PRI_DEFAULT, "my_grp_file_read_callback", $result);
eio_grp_add($grp, $req);
}
/* Is called when eio_read() done */
function my_grp_file_read_callback($data, $result) {
global $grp;
// Read bytes
var_dump($result);
// Create eio_close() request and add it to the group
// $data should contain the file descriptor
$req = eio_close($data);
eio_grp_add($grp, $req);
}
// Create request group
$grp = eio_grp("my_grp_done", $temp_filename);
var_dump($grp);
// Create eio_open() request and add it to the group
$req = eio_open($temp_filename, EIO_O_RDWR | EIO_O_APPEND , NULL,
EIO_PRI_DEFAULT, "my_grp_file_opened_callback", NULL);
eio_grp_add($grp, $req);
// Process requests
eio_event_loop();
?>
]]></programlisting>
&example.outputs.similar;
<screen><![CDATA[
resource(6) of type (EIO Group Descriptor)
bool(true)
string(4) "some"
bool(true)
]]></screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><function>eio_grp</function></member>
<member><function>eio_grp_cancel</function></member>
<member><function>eio_grp_limit</function></member>
</simplelist>
</refsect1>
</refentry>
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