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<title>clGetProgramInfo</title>
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<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="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="_top">cl_int</a>
<strong class="fsfunc">clGetProgramInfo</strong>
(</code>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">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="_top">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="_top">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="_top">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>
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 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>
</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 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>. 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>. 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>
</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 greater than or equal to the 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 less than 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_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_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-1.1.pdf#page=117" 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>
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Permission is hereby granted, free of charge, to any person obtaining a
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"Materials"), to deal in the Materials without restriction, including
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