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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xml:id='function.proc-nice' xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>proc_nice</refname>
<refpurpose>Change the priority of the current process</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>proc_nice</methodname>
<methodparam><type>int</type><parameter>increment</parameter></methodparam>
</methodsynopsis>
<para>
<function>proc_nice</function> changes the priority of the current
process by the amount specified in <parameter>increment</parameter>. A
positive <parameter>increment</parameter> will lower the priority of the
current process, whereas a negative <parameter>increment</parameter>
will raise the priority.
</para>
<para>
<function>proc_nice</function> is not related to
<function>proc_open</function> and its associated functions in any way.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>increment</parameter></term>
<listitem>
<para>
The increment value of the priority change.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
If an error occurs, like the user lacks permission to change the priority,
an error of level <constant>E_WARNING</constant> is also generated.
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<title>Availability</title>
<para>
<function>proc_nice</function> will only exist if your system has 'nice'
capabilities. 'nice' conforms to: SVr4, SVID EXT, AT&T, X/OPEN, BSD
4.3. This means that <function>proc_nice</function> is not available
on Windows.
</para>
</note>
</refsect1>
</refentry>
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