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| <title>clGetMemObjectInfo</title> |
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| <meta name="keywords" content="clGetMemObjectInfo" /> |
| </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="clGetMemObjectInfo"></a> |
| <h1> |
| clGetMemObjectInfo |
| </h1> |
| <p> |
| Get information that is common to all memory objects (buffer and image objects). |
| </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">clGetMemObjectInfo</strong> |
| (</code> |
| <td> |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_mem</a> |
| <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">memobj</var> |
| , </td> |
| </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td> |
| <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="enums.html#cl_mem_info" target="pagedisplay">cl_mem_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"> memobj </code> </span> |
| </dt> |
| <dd> |
| <p> |
| Specifies the memory object being queried. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname"> param_name </code> </span> |
| </dt> |
| <dd> |
| <p> |
| Specifies the information to query. The list of supported |
| <code class="varname">param_name</code> types and the |
| information returned in <code class="varname">param_value</code> by |
| <code class="function">clGetMemObjectInfo</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" /> |
| <col align="left" class="col3" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="left">cl_mem_info</th> |
| <th align="left">Return Type</th> |
| <th align="left">Info. returned in <code class="varname">param_value</code></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_TYPE</code> |
| </td> |
| <td align="left">cl_mem_object_type</td> |
| <td align="left"> |
| Returns one of the following values: |
| |
| <p> |
| <code class="constant">CL_MEM_OBJECT_BUFFER</code> |
| if <code class="varname">memobj</code> is created with |
| <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a> |
| or |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>. |
| </p> |
| |
| <p> |
| cl_image_desc.image_type argument value if |
| <code class="varname">memobj</code> is created with |
| <a class="citerefentry" href="clCreateImage.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage</span></span></a>. |
| </p> |
| |
| <p> |
| <code class="constant">CL_MEM_OBJECT_PIPE</code> if <code class="varname">memobj</code> is |
| created with |
| <a class="citerefentry" href="clCreatePipe.html"><span class="citerefentry"><span class="refentrytitle">clCreatePipe</span></span></a>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_FLAGS</code> |
| </td> |
| <td align="left">cl_mem_flags</td> |
| <td align="left"> |
| Returns the <code class="varname">flags</code> argument value |
| specified when <code class="varname">memobj</code> is created with |
| <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a>, |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>, |
| <a class="citerefentry" href="clCreateImage.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage</span></span></a>. |
| or |
| <a class="citerefentry" href="clCreatePipe.html"><span class="citerefentry"><span class="refentrytitle">clCreatePipe</span></span></a>. |
| If <code class="varname">memobj</code> is a sub-buffer the memory |
| access qualifiers inherited from parent buffer is also |
| returned. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_SIZE</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return actual size of the data store associated with |
| <code class="varname">memobj</code> in bytes. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_HOST_PTR</code> |
| </td> |
| <td align="left">void *</td> |
| <td align="left"> |
| |
| <p> |
| If <code class="varname">memobj</code> is created with |
| <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a> |
| or |
| <a class="citerefentry" href="clCreateImage.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage</span></span></a> |
| and <code class="constant">CL_MEM_USE_HOST_PTR</code> is |
| specified in <code class="varname">mem_flags</code>, return the |
| <code class="varname">host_ptr</code> argument value specified when |
| <code class="varname">memobj</code> is created. Otherwise a NULL |
| value is returned. |
| </p> |
| |
| <p> |
| If <code class="varname">memobj</code> is created with |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>, |
| return the <code class="varname">host_ptr</code> |
| + <code class="varname">origin</code> value |
| specified when <code class="varname">memobj</code> |
| is created. <code class="varname">host_ptr</code> |
| is the argument value specified to |
| <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a> |
| and <code class="constant">CL_MEM_USE_HOST_PTR</code> is specified |
| in <code class="varname">mem_flags</code> for memory object from |
| which <code class="varname">memobj</code> is created. Otherwise a |
| NULL value is returned. |
| </p> </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_MAP_COUNT</code> |
| </td> |
| <td align="left">cl_uint</td> |
| <td align="left"> |
| Map count. The map count returned should be considered immediately stale. It is |
| unsuitable for general use in applications. This feature is provided for debugging. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_REFERENCE_COUNT</code> |
| </td> |
| <td align="left">cl_uint</td> |
| <td align="left"> |
| Return <code class="varname">memobj</code> reference count. The reference count returned should |
| be considered immediately stale. It is unsuitable for general use in |
| applications. This feature is provided for identifying memory leaks. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_CONTEXT</code> |
| </td> |
| <td align="left">cl_context</td> |
| <td align="left"> |
| Return context specified when memory object is created. |
| If <code class="varname">memobj</code> is created using |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>, the context |
| associated with the memory object specified as the <code class="varname">buffer</code> argument to |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a> is returned. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_ASSOCIATED_- |
| MEMOBJECT</code> |
| </td> |
| <td align="left">cl_mem</td> |
| <td align="left"> |
| Return memory object from which <code class="varname">memobj</code> is created. |
| |
| <p> |
| This returns the memory object specified |
| as <code class="varname">buffer</code> argument to |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a> |
| if <code class="varname">memobj</code> is a subbuffer object created using |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>. |
| </p> |
| |
| <p> |
| This returns the <code class="varname">memobj</code> specified in |
| <span class="type">cl_image_desc</span> if <code class="varname">memobj</code> is an image |
| object. |
| </p> |
| |
| <p> |
| Otherwise a NULL value is returned. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_OFFSET</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return offset if <code class="varname">memobj</code> is a sub-buffer object created using |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>. |
| |
| <p> |
| This returns 0 if <code class="varname">memobj</code> is not a subbuffer object. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_USES_SVM_POINTER</code> |
| </td> |
| <td align="left">cl_bool</td> |
| <td align="left"> |
| Return <code class="constant">CL_TRUE</code> if |
| <code class="varname">memobj</code> is a buffer |
| object that was created with |
| <code class="constant">CL_MEM_USE_HOST_PTR</code> or is a |
| subbuffer object of a buffer object that was |
| created with <code class="constant">CL_MEM_USE_HOST_PTR</code> |
| and the <code class="varname">host_ptr</code> specified when the |
| buffer object was created is a SVM |
| pointer; otherwise returns <code class="constant">CL_FALSE</code>. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_D3D10_RESOURCE_KHR</code> |
| </td> |
| <td align="left">ID3D10Resource *</td> |
| <td align="left"> |
| If the |
| <a class="citerefentry" href="cl_khr_d3d10_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d10_sharing</span></span></a> |
| extension is enabled, and if <code class="varname">memobj</code> was created using |
| <a class="citerefentry" href="clCreateFromD3D10BufferKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10BufferKHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromD3D10Texture2DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture2DKHR</span></span></a>, |
| or <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>, |
| returns the <code class="varname">resource</code> argument specified |
| when <code class="varname">memobj</code> was created. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_DX9_MEDIA_- |
| ADAPTER_TYPE_KHR</code> |
| </td> |
| <td align="left">cl_dx9_media_- |
| adapter_type_khr</td> |
| <td align="left"> |
| Returns the <code class="varname">cl_dx9_media_adapter_type_khr</code> argument |
| value specified when <code class="varname">memobj</code> is created using |
| <a class="citerefentry" href="clCreateFromDX9MediaSurfaceKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromDX9MediaSurfaceKHR</span></span></a> |
| (If the <a class="citerefentry" href="cl_khr_dx9_media_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_dx9_media_sharing</span></span></a> |
| extension is supported)</td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_DX9_MEDIA_- |
| SURFACE_INFO_KHR</code> |
| </td> |
| <td align="left">cl_dx9_- |
| surface_info_khr</td> |
| <td align="left"> |
| Returns the <code class="varname">cl_dx9_surface_info_khr</code> |
| argument value specified when <code class="varname">memobj</code> is created using |
| <a class="citerefentry" href="clCreateFromDX9MediaSurfaceKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromDX9MediaSurfaceKHR</span></span></a> |
| (If the <a class="citerefentry" href="cl_khr_dx9_media_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_dx9_media_sharing</span></span></a> |
| extension is supported) |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_MEM_D3D11_RESOURCE_KHR</code> |
| </td> |
| <td align="left">ID3D11Resource *</td> |
| <td align="left">If the <a class="citerefentry" href="cl_khr_d3d11_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d11_sharing</span></span></a> |
| extension is supported, |
| if <code class="varname">memobj</code> was created using |
| <a class="citerefentry" href="clCreateFromD3D11BufferKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D11BufferKHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromD3D11Texture2DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D11Texture2DKHR</span></span></a>, or |
| <a class="citerefentry" href="clCreateFromD3D11Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D11Texture3DKHR</span></span></a>, |
| returns the <code class="varname">resource</code> argument specified when <code class="varname">memobj</code> was created. |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </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 </code> </span> |
| </dt> |
| <dd> |
| <p> |
| Used to specify 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 above. |
| </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> |
| </dl> |
| </div> |
| </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"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">param_name</code> is not valid, or if size |
| in bytes specified by <code class="varname">param_value_size</code> is < the size of return type as |
| described in the table above and <code class="varname">param_value</code> is not NULL. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_MEM_OBJECT</span> if <code class="varname">memobj</code> |
| is a not a valid memory object. |
| </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> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_D3D10_RESOURCE_KHR</span> If the |
| <a class="citerefentry" href="cl_khr_d3d10_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d10_sharing</span></span></a> |
| extension is enabled and if <code class="varname">param_name</code> |
| is <code class="constant">CL_MEM_D3D10_RESOURCE_KHR</code> |
| and <code class="varname">memobj</code> was not created by the function |
| <a class="citerefentry" href="clCreateFromD3D10BufferKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10BufferKHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromD3D10Texture2DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture2DKHR</span></span></a>, |
| or |
| <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_DX9_MEDIA_SURFACE_KHR</span> |
| if <code class="varname">param_name</code> is |
| <code class="constant">CL_MEM_DX9_MEDIA_SURFACE_INFO_KHR</code> |
| and <code class="varname">memobj</code> was not created by the function |
| <a class="citerefentry" href="clCreateFromDX9MediaSurfaceKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromDX9MediaSurfaceKHR</span></span></a> |
| from a Direct3D9 surface. (If the |
| <a class="citerefentry" href="cl_khr_dx9_media_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_dx9_media_sharing</span></span></a> |
| extension is supported) |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_D3D11_RESOURCE_KHR</span> |
| If the |
| <a class="citerefentry" href="cl_khr_d3d11_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d11_sharing</span></span></a> |
| extension is supported, if |
| <code class="varname">param_name</code> is <code class="constant">CL_MEM_D3D11_RESOURCE_KHR</code> |
| and <code class="varname">memobj</code> was not created by the function |
| <a class="citerefentry" href="clCreateFromD3D11BufferKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D11BufferKHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromD3D11Texture2DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D11Texture2DKHR</span></span></a>, |
| or |
| <a class="citerefentry" href="clCreateFromD3D11Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D11Texture3DKHR</span></span></a>." |
| </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=clGetMemObjectInfo" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="clGetImageInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetImageInfo</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> |
