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| <title>clSVMFree</title> |
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| <div xmlns="" class="refnamediv"> |
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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"> |
| <tr valign="bottom"> |
| <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> |
| </div> |
| </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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