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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry>
<refentryinfo>
<keywordset>
<keyword>clWaitForEvents</keyword>
</keywordset>
</refentryinfo>
<refmeta>
<refentrytitle>
clWaitForEvents
</refentrytitle>
<refmiscinfo>
<copyright>
<year>2007-2011</year>
<holder>The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.</holder>
</copyright>
</refmiscinfo>
<manvolnum>3</manvolnum>
</refmeta>
<!-- ================================ SYNOPSIS -->
<refnamediv id="clWaitForEvents">
<refname>
clWaitForEvents
</refname>
<refpurpose>
Waits on the host thread for commands identified by event objects to complete.
</refpurpose>
</refnamediv>
<refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">cl_int</link>
<function>clWaitForEvents</function>
</funcdef>
<paramdef><link xlink:href="scalarDataTypes.html">cl_uint</link><parameter>num_events</parameter></paramdef>
<paramdef>const <link xlink:href="abstractDataTypes.html">cl_event</link><parameter>*event_list</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<!-- ================================ PARAMETERS -->
<refsect1 id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><varname>event_list</varname></term>
<listitem>
<para>
The events specified in <varname>event_list</varname> act as synchronization points.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<!-- ================================ NOTES -->
<refsect1 id="notes"><title>Notes</title>
<para>
Waits on the host thread for commands identified by event objects in
<varname>event_list</varname> to complete. A command is considered complete if its
execution status is <constant>CL_COMPLETE</constant> or a negative value. The events
specified in <varname>event_list</varname> act as synchronization points.
</para>
<para>
<!-- ext. spec p. 61, section 9.8.4 --> If the
<citerefentry><refentrytitle>cl_khr_gl_event</refentrytitle></citerefentry> extension
is enabled, event objects can also be used to reflect the status of an OpenGL sync
object. The sync object in turn refers to a fence command executing in an OpenGL
command stream. This provides another method of coordinating sharing of buffers and
images between OpenGL and OpenCL.
</para>
</refsect1>
<!-- ================================ ERRORS -->
<refsect1 id="errors"><title>Errors</title>
<para>
Returns <errorname>CL_SUCCESS</errorname> if the execution status of all
events in <varname>event_list</varname> is CL_COMPLETE.
Otherwise, it returns one of the following errors:
</para>
<itemizedlist mark="disc">
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if <varname>num_events</varname> is zero
or <varname>event_list</varname> is NULL..
</listitem>
<listitem>
<errorname>CL_INVALID_CONTEXT</errorname> if events specified in
<varname>event_list</varname> do not belong to the same context.
</listitem>
<listitem>
<errorname>CL_INVALID_EVENT</errorname> if event objects specified in
<varname>event_list</varname> are not valid event objects.
</listitem>
<listitem>
<errorname>CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST</errorname> if the
execution status of any of the events in <varname>event_list</varname> is a
negative integer value.
</listitem>
<listitem>
<errorname>CL_OUT_OF_RESOURCES</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the device.
</listitem>
<listitem>
<errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the host.
</listitem>
</itemizedlist>
</refsect1>
<!-- ================================ EXAMPLE -->
<!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE -->
<!--
<refsect2 id="example1">
<title>
Example
</title>
<informaltable frame="none">
<tgroup cols="1" align="left" colsep="0" rowsep="0">
<colspec colname="col1" colnum="1" />
<tbody>
<row>
<entry>
Example goes here - it will be set in "code" type with white space preserved.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect2>
-->
<!-- ================================ SPECIFICATION -->
<!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page
-->
<refsect1 id="specification"><title>Specification</title>
<para>
<imageobject>
<imagedata fileref="pdficon_small1.gif" format="gif" />
</imageobject>
<olink uri="clWaitForEvents">OpenCL Specification</olink>
</para>
</refsect1>
<!-- ================================ ALSO SEE -->
<refsect1 id="seealso"><title>Also see</title>
<para>
<citerefentry><refentrytitle>clGetEventInfo</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clReleaseEvent</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clRetainEvent</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>cl_khr_gl_event</refentrytitle></citerefentry>
</para>
</refsect1>
<!-- ================================ COPYRIGHT -->
<!-- Content included from copyright.inc.xsl -->
<refsect3 id="Copyright"><title></title>
<imageobject>
<imagedata fileref="KhronosLogo.jpg" format="jpg" />
</imageobject>
<para />
</refsect3>
<!-- 24-Oct-2011 -->
</refentry>
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