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<title>wait_group_events</title>
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<a xmlns="http://www.w3.org/1999/xhtml" id="wait_group_events"></a>
<h1>wait_group_events</h1>
<p>
Wait for events that identify the <code xmlns="http://www.w3.org/1999/xhtml" class="function">async_work_group_copy</code> operations to complete.
</p>
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<div class="refsynopsisdiv">
<h2></h2>
<div class="funcsynopsis">
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<td>
<code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
<a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
<strong class="fsfunc">
wait_group_events
</strong>
(</code>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_events</var>, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">event_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event_list</var><code>)</code></td>
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<div class="refsect1">
<a id="description"></a>
<h2>Description</h2>
<p>
<code class="function">wait_group_events</code> waits for events that identify the
<a class="citerefentry" href="async_work_group_copy.html"><span class="citerefentry"><span class="refentrytitle">async_work_group_copy</span></span></a>
operations to complete. The event objects specified in <code class="varname">event_list</code>
will be released after the wait is performed.
</p>
<p>
This function must be encountered by all work-items in a work-group executing the
kernel with the same <code class="varname">num_events</code> and event objects specified in
<code class="varname">event_list</code>; otherwise the results are undefined.
This rule applies to ND-ranges implemented with uniform
and non-uniform work-groups.
</p>
</div>
<div class="refsect1">
<a id="notes"></a>
<h2>Notes</h2>
<p>
The kernel must wait for the completion of all async copies using the
<code class="function">wait_group_events</code> built-in function before exiting; otherwise the
behavior is undefined.
</p>
</div>
<div class="refsect1">
<a id="specification"></a>
<h2>Specification</h2>
<p>
<img src="pdficon_small1.gif" />
<a href="https://www.khronos.org/registry/cl/specs/opencl-2.0-openclc.pdf#namedest=asyncCopyFunctions" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="asyncCopyFunctions.html"><span class="citerefentry"><span class="refentrytitle">Async Copy and Prefetch Functions</span></span></a>
</p>
</div>
<div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2015 The Khronos Group Inc.
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