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    <title>clTerminateContextKHR</title>
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      <div class="titlepage"></div>
      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="clTerminateContextKHR"></a>
        <h1>
            clTerminateContextKHR
        </h1>
        <p>
            Terminates all pending work associated with the context and renders all data owned by the context invalid.
        </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">cl_int</a> <strong class="fsfunc">clTerminateContextKHR</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><code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="parameters"></a>
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist"></dl>
        </div>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
            It is the responsibility of the application to release all objects associated with the 
            context being terminated.
        </p>
        <p>
            When a context is terminated:
        </p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: opencircle; ">
            <li class="listitem" style="list-style-type: circle">
              <p>
                The execution status of enqueued commands will be 
                <code class="constant">CL_TERMINATED_KHR</code>. Event 
                objects can be queried using 
                <a class="citerefentry" href="clGetEventInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetEventInfo</span></span></a>. 
                Event callbacks can be registered and 
                registered event callbacks will be called with 
                <code class="varname">event_command_exec_status</code> set to 
                <code class="constant">CL_TERMINATED_KHR</code>. 
                <a class="citerefentry" href="clWaitForEvents.html"><span class="citerefentry"><span class="refentrytitle">clWaitForEvents</span></span></a> 
                will return as immediately for commands 
                associated with event objects specified in 
                <code class="varname">event_list</code>. The status of user events can be set. 
                Event objects can be retained and released. 
                <a class="citerefentry" href="clGetEventProfilingInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetEventProfilingInfo</span></span></a>  
                returns 
                <span class="errorname">CL_PROFILING_INFO_NOT_AVAILABLE</span>.
            </p>
            </li>
            <li class="listitem" style="list-style-type: circle">
              <p>
                The context is considered to be terminated. 
                A callback function registered when the 
                context was created will be called. Only 
                queries, retain and release operations can be 
                performed on the context. All other APIs that 
                use a context as an argument will return 
                <span class="errorname">CL_CONTEXT_TERMINATED_KHR</span>.
            </p>
            </li>
            <li class="listitem" style="list-style-type: circle">
              <p>
                The contents of the memory regions of the 
                memory objects is undefined. Queries, 
                registering a destructor callback, retain 
                and release operations can be performed on the 
                memory objects.
            </p>
            </li>
            <li class="listitem" style="list-style-type: circle">
              <p>
                Once a context has been terminated, all OpenCL API 
                calls that create objects or enqueue 
                commands will return 
                <span class="errorname">CL_CONTEXT_TERMINATED_KHR</span>. 
                APIs that release OpenCL 
                objects will continue to operate as though 
                <code class="function">clTerminateContextKHR</code> was not called.
            </p>
            </li>
            <li class="listitem" style="list-style-type: circle">
              <p>
                The behavior of callbacks will remain unchanged, 
                and will report appropriate error, if 
                executing after termination of context. This 
                behavior is similar to enqueued commands, 
                after the command queue has become invalid.
            </p>
            </li>
          </ul>
        </div>
        <p>
            An implementation that supports this extension 
            must be able to terminate commands currently 
            executing on devices or queued across all 
            command-queues associated with the context that is 
            being terminated. The implementation cannot 
            implement this extension by waiting for currently 
            executing (or queued) commands to finish execution 
            on devices associated with this context (i.e.
            doing a <a class="citerefentry" href="clFinish.html"><span class="citerefentry"><span class="refentrytitle">clFinish</span></span></a>).
        </p>
        <p>
            In Table 4.5, (see 
            <a class="citerefentry" href="clCreateContext.html"><span class="citerefentry"><span class="refentrytitle">clCreateContext</span></span></a>) 
            <code class="constant">CL_CONTEXT_TERMINATE_KHR</code> 
            can be specified in the context properties only if all devices
            associated with the context support the ability 
            to support context termination (i.e. 
            <code class="constant">CL_DEVICE_TERMINATE_CAPABILITY_CONTEXT_KHR</code> 
            is set for
            <code class="constant">CL_DEVICE_TERMINATE_CAPABILITY_KHR</code>). 
            Otherwise, context creation fails with error 
            code of <span class="errorname">CL_INVALID_PROPERTY</span>.
        </p>
      </div>
      <div class="refsect1">
        <a id="errors"></a>
        <h2>Errors</h2>
        <p>
          <code class="function">clTerminateContextKHR</code> returns <span class="errorname">CL_SUCCESS</span> 
            if the function is executed successfully.
            Otherwise, it returns one of the following errors:
        </p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: disc; ">
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if <code class="varname">context</code> is not a valid OpenCL context.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_CONTEXT_TERMINATED_KHR</span> if <code class="varname">context</code> has already been terminated.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_OPERATION</span> if 
                <code class="varname">context</code> was not created with 
                <code class="constant">CL_CONTEXT_TERMNATE_KHR</code> 
                set to <code class="constant">CL_TRUE</code>.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_RESOURCES</span> if there 
                is a failure to allocate resources required by the
                OpenCL implementation on the device.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there 
                is a failure to allocate resources required by the
                OpenCL implementation on the host.
            </li>
          </ul>
        </div>
      </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-extensions.pdf#page=123" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
        </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
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