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    <title>clGetProgramInfo</title>
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    <div class="refentry">
      <a id="id-1"></a>
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      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="clGetProgramInfo"></a>
        <h1>
            clGetProgramInfo
        </h1>
        <p>
            Returns information about the program object.
        </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">clGetProgramInfo</strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_program</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">program</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="#cl_program_info">cl_program_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"> program </code> </span>
            </dt>
            <dd>
              <p>
                        Specifies the program 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">clGetProgramInfo</code>
                      is described in the table below.
                    </p>
              <div class="informaltable">
                <a id="cl_program_info"></a>
                <table border="1">
                  <colgroup>
                    <col align="left" class="col1" />
                    <col align="left" class="col2" />
                  </colgroup>
                  <thead>
                    <tr>
                      <th align="left">cl_program_info</th>
                      <th align="left">Return Type and Info. returned in <code class="varname">param_value</code></th>
                    </tr>
                  </thead>
                  <tbody>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_REFERENCE_COUNT</code>
                      </td>
                      <td align="left">
                                    Return type: cl_uint

                                    <p>Return the <code class="varname">program</code> reference count.</p>
                                    <p>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.</p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_CONTEXT</code>
                      </td>
                      <td align="left">
                                    Return type: cl_context

                                    <p>
                                        Return the context specified when the program object is created
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_NUM_DEVICES</code>
                      </td>
                      <td align="left">
                                    Return type: cl_uint

                                    <p>
                                        Return the number of devices associated with <code class="varname">program</code>.
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_DEVICES</code>
                      </td>
                      <td align="left">
                                    Return type: cl_device_id[]

                                    <p>
                                        Return the list of devices associated with the program object. This can be
                                        the devices associated with context on which the program object has been
                                        created or can be a subset of devices that are specified when a progam object
                                        is created using
                                        <a class="citerefentry" href="clCreateProgramWithBinary.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithBinary</span></span></a>.
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_SOURCE</code>
                      </td>
                      <td align="left">
                                    Return type: char[]

                                    <p>
                                      Return the program source code specified by
                                      <a class="citerefentry" href="clCreateProgramWithSource.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithSource</span></span></a>.
                                      The source string returned is a
                                      concatenation of all source strings specified to
                                      <a class="citerefentry" href="clCreateProgramWithSource.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithSource</span></span></a>
                                      with a null terminator. The concatenation strips any
                                      nulls in the original source strings.
                                    </p>

                                    <p>
                                      If <code class="varname">program</code> is created using
                                      <a class="citerefentry" href="clCreateProgramWithBinary.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithBinary</span></span></a>
                                      or
                                      <a class="citerefentry" href="clCreateProgramWithBuiltInKernels.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithBuiltInKernels</span></span></a>,
                                      a null string or the appropriate program source code is
                                      returned depending on whether or not the program source
                                      code is stored in the binary.
                                    </p>

                                    <p>
                                      The actual number of characters that represents the
                                      program source code including the null terminator is
                                      returned in <code class="varname">param_value_size_ret</code>.
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_BINARY_SIZES</code>
                      </td>
                      <td align="left">
                                    Return type: size_t[]

                                    <p>
                                      Returns an array that contains the size in bytes of
                                      the program binary (could be an executable binary,
                                      compiled binary or library binary) for each device
                                      associated with <code class="varname">program</code>. The size
                                      of the array is the number of devices associated with
                                      <code class="varname">program</code>. If a binary is not available
                                      for a device(s), a size of zero is returned.
                                    </p>

                                    <p>
                                      If <code class="varname">program</code> is created using
                                      <a class="citerefentry" href="clCreateProgramWithBuiltInKernels.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithBuiltInKernels</span></span></a>,
                                      the implementation may return zero in any entries of the
                                      returned array.
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_BINARIES</code>
                      </td>
                      <td align="left">
                                    Return type: unsigned char *[]

                                    <p>
                                      Return the program binaries (could be an executable
                                      binary, compiled binary or library binary) for all
                                      devices associated with <code class="varname">program</code>. For
                                      each device in <code class="varname">program</code>, the
                                      binary returned can be the binary specified for
                                      the device when <code class="varname">program</code> is created with
                                      <a class="citerefentry" href="clCreateProgramWithBinary.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithBinary</span></span></a>
                                      or it can be the executable binary generated by
                                      <a class="citerefentry" href="clBuildProgram.html"><span class="citerefentry"><span class="refentrytitle">clBuildProgram</span></span></a>
                                      or
                                      <a class="citerefentry" href="clLinkProgram.html"><span class="citerefentry"><span class="refentrytitle">clLinkProgram</span></span></a>.
                                      If program is created with
                                      <a class="citerefentry" href="clCreateProgramWithSource.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithSource</span></span></a>,
                                      the binary returned is the binary generated by
                                      <a class="citerefentry" href="clBuildProgram.html"><span class="citerefentry"><span class="refentrytitle">clBuildProgram</span></span></a>,
                                      <a class="citerefentry" href="clCompileProgram.html"><span class="citerefentry"><span class="refentrytitle">clCompileProgram</span></span></a>,
                                      or
                                      <a class="citerefentry" href="clLinkProgram.html"><span class="citerefentry"><span class="refentrytitle">clLinkProgram</span></span></a>.
                                      The bits returned can be an implementation-specific
                                      intermediate representation (a.k.a. IR) or device specific
                                      executable bits or both. The decision on which information
                                      is returned in the binary is up to the OpenCL implementation.
                                    </p>

                                    <p>
                                      <code class="varname">param_value</code> points to an array of
                                      <code class="code">n</code> pointers allocated by the caller, where
                                      <code class="code">n</code> is the number of devices associated with
                                      program. The buffer sizes needed to allocate the memory
                                      that these <code class="code">n</code> pointers refer to can be queried
                                      using the <code class="constant">CL_PROGRAM_BINARY_SIZES</code>
                                      query as described in this table.
                                    </p>

                                    <p>
                                      Each entry in this array is used by the implementation as
                                      the location in memory where to copy the program binary for
                                      a specific device, if there is a binary available. To find
                                      out which device the program binary in the array refers to,
                                      use the <code class="constant">CL_PROGRAM_DEVICES</code> query to get
                                      the list of devices. There is a one-to-one correspondence
                                      between the array of <code class="code">n</code> pointers returned
                                      by <code class="constant">CL_PROGRAM_BINARIES</code> and array of
                                      devices returned by <code class="constant">CL_PROGRAM_DEVICES.</code>
                                    </p>

                                    <p>
                                      If an entry value in the array is NULL, the implementation
                                      skips copying the program binary for the specific device
                                      identified by the array index.
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_NUM_KERNELS</code>
                      </td>
                      <td align="left">
                                    Return type: size_t

                                    <p>
                                      Returns the number of kernels declared in
                                      <code class="varname">program</code> that can be created with
                                      <a class="citerefentry" href="clCreateKernel.html"><span class="citerefentry"><span class="refentrytitle">clCreateKernel</span></span></a>.
                                      This information is only available after a successful program
                                      executable has been built for at least one device in the
                                      list of devices associated with <code class="varname">program</code>.
                                    </p>
                                </td>
                    </tr>
                    <tr>
                      <td align="left">
                        <code class="constant">CL_PROGRAM_KERNEL_NAMES</code>
                      </td>
                      <td align="left">
                                    Return type: char[]

                                    <p>
                                      Returns a semi-colon separated list of kernel names
                                      in <code class="varname">program</code> that can be created with
                                      <a class="citerefentry" href="clCreateKernel.html"><span class="citerefentry"><span class="refentrytitle">clCreateKernel</span></span></a>.
                                      This information is only available after a successful program
                                      executable has been built for at least one device in the
                                      list of devices associated with <code class="varname">program</code>.
                                    </p>
                                </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 copied to <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 &lt; 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_PROGRAM</span> if <code class="varname">program</code> is not
              a valid program object.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_PROGRAM_EXECUTABLE</span> if
              <code class="varname">param_name</code> is <code class="constant">CL_PROGRAM_NUM_KERNELS</code> or
              <code class="constant">CL_PROGRAM_KERNEL_NAMES</code> and a successful program executable
              has not been built for at least one device in the list of devices associated
              with <code class="varname">program</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="http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf#page=150" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="clGetProgramBuildInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetProgramBuildInfo</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 © 2007-2011 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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