php-doc-en/reference/sync/syncevent/construct.xml
2021-07-06 15:14:59 +03:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="syncevent.construct" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>SyncEvent::__construct</refname>
<refpurpose>Constructs a new SyncEvent object</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <methodname>SyncEvent::__construct</methodname>
<methodparam choice="opt"><type>string</type><parameter>name</parameter></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>manual</parameter><initializer>&false;</initializer></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>prefire</parameter><initializer>&false;</initializer></methodparam>
</methodsynopsis>
<para>
Constructs a named or unnamed event object.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>name</parameter></term>
<listitem>
<para>
The name of the event if this is a named event object.
</para>
<note>
<para>
If the name already exists, it must be able to be opened by the current user
that the process is running as or an exception will be thrown with a meaningless
error message.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>manual</parameter></term>
<listitem>
<para>
Specifies whether or not the event object must be reset manually.
</para>
<note>
<para>
Manual reset event objects allow all waiting processes through until the
object is reset.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>prefire</parameter></term>
<listitem>
<para>
Specifies whether or not to prefire (signal) the event object.
</para>
<note>
<para>
Only has impact if the calling process/thread is the first to create the object.
</para>
</note>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
The new <classname>SyncEvent</classname> object.
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
An exception is thrown if the event object cannot be created or opened.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>SyncEvent::__construct</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// In a web application:
$event = new SyncEvent("GetAppReport");
$event->fire();
// In a cron job:
$event = new SyncEvent("GetAppReport");
$event->wait();
?>
]]>
</programlisting>
</example>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>PECL sync 1.1.0</entry>
<entry>
<para>
Added <parameter>prefire</parameter>.
</para>
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>SyncEvent::fire</methodname></member>
<member><methodname>SyncEvent::reset</methodname></member>
<member><methodname>SyncEvent::wait</methodname></member>
</simplelist>
</refsect1>
</refentry>
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