| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> |
| <!-- saved from url=(0013)about:internet --> |
| <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" xmlns:xlink="http://www.w3.org/1999/xlink" pref:renderer="mathplayer-dl"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> |
| <style xmlns="" type="text/css"> |
| /* This style sets a margin around the entire page */ |
| html, body { |
| margin: 10px; |
| } |
| |
| p { |
| font: normal 16px verdana, sans-serif; |
| margin: 0; |
| padding-bottom:12px; |
| } |
| |
| h1 { |
| font: bold 25px verdana, sans-serif; |
| margin-top: 0; |
| margin-bottom: 3px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| h2 { |
| font: bold 19px verdana, sans-serif; |
| margin-top: 28px; |
| margin-bottom: 3px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| h3 { |
| font: bold 19px verdana, sans-serif !important; |
| margin-top: 28px; |
| margin-bottom: 3px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| li { |
| font: normal 16px verdana, sans-serif; |
| margin-top: 0; |
| margin-bottom: 18px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| .pdparam { |
| font: italic 16px verdana, sans-serif; |
| } |
| |
| .term { |
| font: italic 16px verdana, sans-serif; |
| font-weight: normal; |
| } |
| |
| .type { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| .parameter { |
| font-style: italic; |
| } |
| |
| a:link, a:visited { |
| color: blue; |
| text-decoration: none; |
| font: normal 16px; |
| } |
| |
| a:hover { |
| background-color: #FFFF99; |
| font: normal 16px; |
| } |
| |
| div.funcsynopsis { |
| text-align: left; |
| background-color: #e6e6e6; |
| font: normal 16px verdana, sans-serif; |
| padding-top: 10px; |
| padding-bottom: 10px; |
| } |
| |
| div.funcsynopsis table { |
| border-collapse: separate; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.funcsynopsis td { |
| background-color: #e6e6e6; |
| border: 0 solid #000; |
| padding: 1px; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 { |
| font-family: verdana, sans-serif; |
| font-size: 16px; |
| } |
| |
| code.constant { |
| font: normal 16px courier new, monospace !important; |
| } |
| |
| span.errorname { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| code.function { |
| font: bold 16px verdana, sans-serif !important; |
| } |
| |
| b.fsfunc { |
| font: bold 16px verdana, sans-serif !important; |
| } |
| |
| code.varname { |
| font: italic 16px verdana, sans-serif; |
| } |
| |
| code.replaceable { |
| font: italic 16px courier new, monospace; |
| } |
| |
| code.funcdef { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| .citerefentry { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| .parameter { |
| font-style: italic; |
| } |
| |
| code.fsfunc { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| /* PARAMETER: This style controls spacing between the terms in Parameter section */ |
| dt { |
| margin-top: 15px; |
| } |
| |
| /* TABLES: These styles apply to all tables OTHER than the Synopsis and Example tables */ |
| div.refsect1 table { |
| width: 100%; |
| margin-top: 10px; |
| background-color: #FFF; |
| border-collapse: collapse; |
| border-color: #000; |
| border-width: 1px; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 th { |
| border-collapse: collapse; |
| border-color: #000; |
| border-width: 1px; |
| font: bold 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 td { |
| background-color: #FFF; |
| padding: 5px; |
| vertical-align: text-top; |
| border-collapse: collapse; |
| border-color: #000; |
| border-width: 1px; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 p{ |
| font: normal 16px verdana, sans-serif; |
| margin-top: 8px; |
| margin-bottom: 8px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| |
| /* EXAMPLE: These styles apply only to the Example section */ |
| div.refsect2 { |
| font: normal 16px courier new, monospace !important; |
| } |
| |
| div.refsect2 table { |
| margin-top: 0; |
| background-color: #e6e6e6; |
| width: 100%; |
| border: 0 solid #000; |
| padding: 2px; |
| font: normal 16px courier new, monospace !important; |
| } |
| |
| div.refsect2 td { |
| background-color: #e6e6e6; |
| font: normal 16px courier new, monospace !important; |
| white-space:pre; |
| } |
| |
| /* COPYRIGHT: This style formats the text of the copyright statement at the bottom of the page */ |
| div.refsect3 { |
| font: normal 11px verdana, sans-serif; |
| margin-top: 50px; |
| margin-bottom: 20px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| </style> |
| <title>clGetCommandQueueInfo</title> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /> |
| <meta name="keywords" content="clGetCommandQueueInfo" /> |
| </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="clGetCommandQueueInfo"></a> |
| <h1>clGetCommandQueueInfo</h1> |
| <p>Query information about a command-queue.</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">clGetCommandQueueInfo</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="enums.html#cl_command_queue_info" target="pagedisplay">cl_command_queue_info</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_name</var> |
| , </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td> |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_value_size</var> |
| , </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">*param_value</var> |
| , </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td> |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value_size_ret</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>Specifies the command-queue being queried.</p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">param_name</code> |
| </span> |
| </dt> |
| <dd> |
| <p>Specifies the information to query.</p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">param_value_size</code> |
| </span> |
| </dt> |
| <dd> |
| <p>Specifies the size in bytes of memory pointed to by |
| <code class="varname">param_value</code>. This size must be ≥ size |
| of return type as described in the table below. |
| If <code class="varname">param_value</code> is NULL, it is ignored.</p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">param_value</code> |
| </span> |
| </dt> |
| <dd> |
| <p>A pointer to memory where the appropriate result being queried |
| is returned. If <code class="varname">param_value</code> is NULL, it is ignored. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">param_value_size_ret</code> |
| </span> |
| </dt> |
| <dd> |
| <p>Returns the actual size in bytes of data being queried by |
| <code class="varname">param_value</code>. If <code class="varname">param_value_size_ret</code> |
| is NULL, it is ignored.</p> |
| </dd> |
| <dt> |
| <span class="term"></span> |
| </dt> |
| <dd> |
| <p> |
| The list of supported <code class="varname">param_name</code> values and |
| the information returned in <code class="varname">param_value</code> by |
| <code class="function">clGetCommandQueueInfo</code> is described in the table below. |
| </p> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="left">cl_command_queue_info</th> |
| <th align="left">Return Type and Information returned in param_value</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_QUEUE_CONTEXT</code> |
| </td> |
| <td align="left"> |
| Return type: <span class="type">cl_context</span> |
| |
| <p>Return the context specified when the command-queue is created.</p></td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_QUEUE_DEVICE</code> |
| </td> |
| <td align="left"> |
| Return type: <span class="type">cl_device_id</span> |
| |
| <p>Return the device specified when the command-queue is created.</p></td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_QUEUE_REFERENCE_COUNT</code> |
| </td> |
| <td align="left"> |
| Return type: <span class="type">cl_uint</span> |
| |
| <p>Return the command-queue reference count.</p> |
| <p> |
| The reference count returned with |
| <code class="constant">CL_QUEUE_REFERENCE_COUNT</code> should be considered |
| immediately stale. It is unsuitable for general use in applications. This |
| feature is provided for identifying memory leaks. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_QUEUE_PROPERTIES</code> |
| </td> |
| <td align="left"> |
| Return type: <span class="type">cl_command_queue_properties</span> |
| |
| <p> |
| Return the currently specified properties for the command-queue. These |
| properties are specified by the value associated with the |
| <code class="constant">CL_COMMAND_QUEUE_PROPERTIES</code> |
| passed in <code class="varname">properties</code> argument in |
| <a class="citerefentry" href="clCreateCommandQueueWithProperties.html"><span class="citerefentry"><span class="refentrytitle">clCreateCommandQueueWithProperties</span></span></a>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_QUEUE_SIZE</code> |
| </td> |
| <td align="left"> |
| Return type: <span class="type">cl_uint</span> |
| |
| <p> |
| Return the currently specified size for the device command-queue. |
| This query is only supported for device command queues. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_QUEUE_DEVICE_DEFAULT</code> |
| </td> |
| <td align="left"> |
| Return type: <span class="type">cl_command_queue</span> |
| |
| <p> |
| Return the current default command |
| queue for the underlying device. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="notes"></a> |
| <h2>Notes</h2> |
| <p> |
| It is possible that a device(s) becomes unavailable after a context and command-queues |
| that use this device(s) have been created and commands have been queued to |
| command-queues. In this case the behavior of OpenCL API calls that use this context |
| (and command-queues) are considered to be implementation-defined. The user callback |
| function, if specified, when the context is created can be used to record appropriate |
| information in the <code class="varname">errinfo</code>, <code class="varname">private_info</code> |
| arguments passed to the callback function when the device becomes unavailable. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| 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"> |
| Returns <span class="errorname">CL_INVALID_COMMAND_QUEUE</span> if |
| <code class="varname">command_queue</code> is not a valid command-queue. |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| Returns <span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">param_name</code> |
| is not one of the supported values or if size in bytes specified by |
| <code class="varname">param_value_size</code> is less than size of return type and |
| <code class="varname">param_value</code> is not a NULL value. |
| </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#namedest=clGetCommandQueueInfo" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="clCreateCommandQueueWithProperties.html"><span class="citerefentry"><span class="refentrytitle">clCreateCommandQueueWithProperties</span></span></a>, |
| <a class="citerefentry" href="clReleaseCommandQueue.html"><span class="citerefentry"><span class="refentrytitle">clReleaseCommandQueue</span></span></a>, |
| <a class="citerefentry" href="clRetainCommandQueue.html"><span class="citerefentry"><span class="refentrytitle">clRetainCommandQueue</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. |
| </div> |
| </div> |
| </body> |
| </html> |