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    <title>atomic_work_item_fence</title>
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        <a xmlns="http://www.w3.org/1999/xhtml" id="atomic_work_item_fence"></a>
        <h1>atomic_work_item_fence</h1>
        <p>
            atomic_work_item_fence functions. 
        </p>
      </div>
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        <h2></h2>
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                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">atomic_work_item_fence</strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="enums.html#cl_mem_fence_flags" target="pagedisplay">cl_mem_fence_flags</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">flags</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="memory_order.html" target="pagedisplay">memory_order</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">order</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="memory_scope.html" target="pagedisplay">memory_scope</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">scope</var><code>)</code></td>
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      <div class="refsect1">
        <a id="parameters"></a>
        <h2>Parameters</h2>
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          <dl class="variablelist">
            <dt>
              <span class="term">
                <code class="varname">flags</code>
              </span>
            </dt>
            <dd>
              <p>
                        Must be set to <code class="constant">CLK_GLOBAL_MEM_FENCE</code>, 
                        <code class="constant">CLK_LOCAL_MEM_FENCE</code>, 
                        <code class="constant">CLK_IMAGE_MEM_FENCE</code> or a combination 
                        of these values ORed together; otherwise the 
                        behavior is undefined. The behavior of calling 
                        <code class="function">atomic_work_item_fence</code> with 
                        <code class="constant">CLK_GLOBAL_MEM_FENCE</code>, 
                        <code class="constant">CLK_LOCAL_MEM_FENCE</code> or 
                        <code class="constant">CLK_IMAGE_MEM_FENCE</code>
                        ORed together is equivalent to calling <code class="function">atomic_work_item_fence</code>
                        individually for each of the fence values set in <code class="varname">flags</code>.
                    </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">order</code>
              </span>
            </dt>
            <dd></dd>
            <dt>
              <span class="term">
                <code class="varname">scope</code>
              </span>
            </dt>
            <dd></dd>
          </dl>
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      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
            Depending on the value of order, this operation:
        </p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: disc; ">
            <li class="listitem">
              <p>
                    has no effects, if <code class="varname">order</code> == <code class="constant">memory_order_relaxed</code>.
                </p>
            </li>
            <li class="listitem">
              <p>
                    is an acquire fence, if <code class="varname">order</code> == <code class="constant">memory_order_acquire</code>.
                </p>
            </li>
            <li class="listitem">
              <p>
                    is a release fence, if <code class="varname">order</code> == <code class="constant">memory_order_release</code>.
                </p>
            </li>
            <li class="listitem">
              <p>
                    is both an acquire fence and a release fence, 
                    if <code class="varname">order</code> == <code class="constant">memory_order_acq_rel</code>.
                </p>
            </li>
            <li class="listitem">
              <p>
                    is a sequentially consistent acquire and release fence, if 
                    <code class="varname">order</code> == <code class="constant">memory_order_seq_cst</code>.
                </p>
            </li>
          </ul>
        </div>
        <p>
            For images declared with the <code class="code">read_write</code> qualifier, 
            the <code class="function">atomic_work_item_fence</code>
            must be called to make sure that writes to the image by a 
            work-item become visible to that workitem on subsequent 
            reads to that image by that work-item.
        </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#page=104" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="atomicFunctions.html"><span class="citerefentry"><span class="refentrytitle">Atomic 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 © 2007-2013 The Khronos Group Inc.
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