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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="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 class="informaltable" 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>,
<a class="citerefentry" href="clCreateProgramWithIL.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithIL</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_IL</code>
</td>
<td align="left">
Return type: void *
<p>
Returns the program IL for programs created with
<a class="citerefentry" href="clCreateProgramWithIL.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithIL</span></span></a>.
</p>
<p>
If <code class="varname">program</code> is created with
<a class="citerefentry" href="clCreateProgramWithSource.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithSource</span></span></a>,
<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> the
memory pointed to by <code class="varname">param_value</code> will be
unchanged and <code class="varname">param_value_size_ret</code> will be
set to 0.
</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 <code class="varname">program</code> is created with
<a class="citerefentry" href="clCreateProgramWithSource.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithSource</span></span></a> or
<a class="citerefentry" href="clCreateProgramWithIL.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithIL</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="https://www.khronos.org/registry/cl/specs/opencl-2.1.pdf#namedest=clGetProgramInfo" 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 © 2007-2015 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
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