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| <title>clEnqueueMarkerWithWaitList</title> |
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| </head> |
| <body> |
| <div class="refentry"> |
| <a id="id-1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="clEnqueueMarkerWithWaitList"></a> |
| <h1> |
| clEnqueueMarkerWithWaitList |
| </h1> |
| <p> |
| Enqueues a marker command which waits for either a list of events to complete, |
| or all previously enqueued commands to complete. |
| </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">cl_int</a> |
| <strong class="fsfunc">clEnqueueMarkerWithWaitList</strong> |
| (</code> |
| <td> |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_command_queue</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">command_queue</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">cl_uint</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_events_in_wait_list</var> |
| , </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td>const |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_event</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event_wait_list</var> |
| , </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td> |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_event</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event</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"> command_queue </code> </span> |
| </dt> |
| <dd> |
| <p> |
| A valid host command-queue. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| event_wait_list |
| </code> |
| <code class="varname"> |
| num_events_in_wait_list |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| These functions specify events that need to complete before this particular |
| command can be executed. |
| </p> |
| <p> |
| If <code class="varname">event_wait_list</code> is NULL, |
| <code class="varname">num_events_in_wait_list</code> must be 0. If |
| <code class="varname">event_wait_list</code> is not NULL, the list of events |
| pointed to by <code class="varname">event_wait_list</code> must be valid |
| and <code class="varname">num_events_in_wait_list</code> must be greater |
| than 0. The events specified in <code class="varname">event_wait_list</code> |
| act as synchronization points. The context associated with events in |
| <code class="varname">event_wait_list</code> and <code class="varname">command_queue</code> must |
| be the same. The memory associated with <code class="varname">event_wait_list</code> |
| can be reused or freed after the function returns. |
| </p> |
| <p> |
| If <code class="varname">event_wait_list</code> is NULL, then this |
| particular command waits until all previous enqueued commands to |
| <code class="varname">command_queue</code> have completed. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname"> event </code> </span> |
| </dt> |
| <dd> |
| <p> |
| Returns an event object that identifies this particular command. |
| Event objects are unique and can be used to identify this marker |
| command later on. <code class="varname">event</code> can be NULL in which case |
| it will not be possible for the application to query the status of |
| this command or queue a wait for this command to complete. If the |
| <code class="varname">event_wait_list</code> and the <code class="varname">event</code> |
| arguments are not NULL, the <code class="varname">event</code> argument should not |
| refer to an element of the <code class="varname">event_wait_list</code> array. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| Enqueues a marker command which waits for either a list of events to complete, |
| or if the list is empty it waits for all commands previously enqueued in |
| <code class="varname">command_queue</code> to complete before it completes. This command returns |
| an event which can be waited on, i.e. this event can be waited on to insure that all |
| events either in the <code class="varname">event_wait_list</code> or all previously enqueued |
| commands, queued before this command to <code class="varname">command_queue</code>, have completed. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| Returns <span class="errorname">CL_SUCCESS</span> if the function 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_COMMAND_QUEUE</span> if <code class="varname">command_queue</code> |
| is not a valid host command-queue. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if context |
| associated with <code class="varname">command_queue</code> and events in |
| <code class="varname">event_wait_list</code> are not the same. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_EVENT_WAIT_LIST</span> |
| if <code class="varname">event_wait_list</code> is NULL and |
| <code class="varname">num_events_in_wait_list</code> > 0, or <code class="varname">event_wait_list</code> |
| is not NULL and <code class="varname">num_events_in_wait_list</code> is 0, or if event |
| objects in <code class="varname">event_wait_list</code> are not valid events. |
| </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.pdf#page=259" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="clWaitForEvents.html"><span class="citerefentry"><span class="refentrytitle">clWaitForEvents</span></span></a>, |
| <a class="citerefentry" href="clEnqueueBarrierWithWaitList.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueBarrierWithWaitList</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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| permit persons to whom the Materials are furnished to do so, subject to |
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| in all copies or substantial portions of the Materials. |
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