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    <title>clSVMFree</title>
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        <h1>
            clSVMFree
        </h1>
        <p>
            Frees a shared virtual memory buffer allocated using clSVMAlloc.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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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">
                        clSVMFree
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_context</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">context</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">void</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*svm_pointer</var><code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="parameters"></a>
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                    <code class="varname"> 
                        context
                    </code>
                </span>
            </dt>
            <dd>
              <p> 
                        A valid OpenCL context used to create the SVM buffer.
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname"> 
                        svm_pointer
                    </code>
                </span>
            </dt>
            <dd>
              <p> 
                        Must be the value returned by a call to <a class="citerefentry" href="clSVMAlloc.html"><span class="citerefentry"><span class="refentrytitle">clSVMAlloc</span></span></a>. 
                        If a NULL pointer is passed in 
                        <code class="varname">svm_pointer</code>, no action occurs.
                    </p>
            </dd>
          </dl>
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      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
            Note that <code class="function">clSVMFree</code> does not wait 
            for previously enqueued commands that may be using 
            <code class="varname">svm_pointer</code> to finish before freeing 
            <code class="varname">svm_pointer</code>. It is the responsibility 
            of the application to 
            make sure that enqueued commands that use 
            <code class="varname">svm_pointer</code> have finished before freeing 
            <code class="varname">svm_pointer</code>. This can be done by 
            enqueuing a blocking operation such as 
            <a class="citerefentry" href="clFinish.html"><span class="citerefentry"><span class="refentrytitle">clFinish</span></span></a>, 
            <a class="citerefentry" href="clWaitForEvents.html"><span class="citerefentry"><span class="refentrytitle">clWaitForEvents</span></span></a>, 
            <a class="citerefentry" href="clEnqueueReadBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReadBuffer</span></span></a> 
            or by registering a callback with the events 
            associated with enqueued commands and when the 
            last enqueued comamnd has finished freeing 
            <code class="varname">svm_pointer</code>.
        </p>
        <p>
            The behavior of using <code class="varname">svm_pointer</code> after 
            it has been freed is undefined. In addition, if a buffer
            object is created using 
            <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a> 
            with <code class="varname">svm_pointer</code>, the buffer object must first be released 
            before the <code class="varname">svm_pointer</code> is freed.
        </p>
        <p>
            The <a class="citerefentry" href="clEnqueueSVMFree.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueSVMFree</span></span></a> 
            API can also be used to enqueue a callback to free the shared virtual 
            memory buffer allocated using 
            <a class="citerefentry" href="clSVMAlloc.html"><span class="citerefentry"><span class="refentrytitle">clSVMAlloc</span></span></a> 
            or a shared system memory pointer.
        </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-2.1.pdf#page=178" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="clSVMAlloc.html"><span class="citerefentry"><span class="refentrytitle">clSVMAlloc</span></span></a>,
            <a class="citerefentry" href="sharedVirtualMemory.html"><span class="citerefentry"><span class="refentrytitle">Shared Virtual Memory 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.
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.
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