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<a name="version_information"><!-- --></a>
<h1 class="topictitle1">Version Information</h1>
<div>
<div class="section">
<p>Intel® Threading Building Blocks (Intel® TBB) has
macros, an environment variable, and a function that reveal version and
run-time information.
</p>
</div>
<div class="section"><h2 class="sectiontitle">Version Macros </h2>
<p>The header
<samp class="codeph">tbb/tbb_stddef.h</samp> defines macros related to versioning,
as described below. You should not redefine these macros.
</p>
<div class="tablenoborder"><a name="tbl4"><!-- --></a><table cellpadding="4" summary="" id="tbl4" width="100%" frame="hsides" border="1" rules="all"><caption><span class="tablecap">Version Macros</span></caption>
<thead align="left">
<tr>
<th class="cellrowborder" valign="top" width="NaN%" id="d61139e81">
<p><strong>Macro</strong>
</p>
</th>
<th class="row-nocellborder" valign="top" width="NaN%" id="d61139e89">
<p><strong>Description of Value</strong>
</p>
</th>
</tr>
</thead>
<tbody>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e81 ">
<p><samp class="codeph">TBB_INTERFACE_VERSION</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e89 ">
<p>Current interface version. The value is a
decimal numeral of the form
<samp class="codeph"><em>xyyy</em></samp> where
<samp class="codeph"><em>x</em></samp> is the major version number and
<samp class="codeph"><em>y</em></samp> is the minor version number.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e81 ">
<p><samp class="codeph">TBB_INTERFACE_VERSION_MAJOR</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e89 ">
<p><samp class="codeph">TBB_INTERFACE_VERSION/1000;</samp> that is, the
major version number.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e81 ">
<p><samp class="codeph">TBB_COMPATIBLE_INTERFACE_VERSION</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e89 ">
<p>Oldest major interface version still
supported.
</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section"><h2 class="sectiontitle"><samp class="codeph">TBB_VERSION</samp> Environment
Variable</h2>
<p>Set the environment variable
<samp class="codeph">TBB_VERSION</samp> to
<samp class="codeph">1</samp> to cause the library to print information on
<samp class="codeph">stderr</samp>. Each line is of the form
<samp class="codeph">“TBB:
<em>tag value</em>”</samp>, where
<em>tag</em> and
<em>value</em> are described below.
</p>
<div class="tablenoborder"><a name="tbl5"><!-- --></a><table cellpadding="4" summary="" id="tbl5" width="100%" frame="hsides" border="1" rules="all"><caption><span class="tablecap">Output from TBB_VERSION</span></caption>
<thead align="left">
<tr>
<th class="cellrowborder" valign="top" width="NaN%" id="d61139e217">
<p><strong>Tag</strong>
</p>
</th>
<th class="row-nocellborder" valign="top" width="NaN%" id="d61139e225">
<p><strong>Description of Value</strong>
</p>
</th>
</tr>
</thead>
<tbody>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">VERSION</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p>Intel TBB product version number.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">INTERFACE_VERSION</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p>Value of macro
<samp class="codeph">TBB_INTERFACE_VERSION</samp> when library was
compiled.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">BUILD_</samp>...
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p>Various information about the machine
configuration on which the library was built.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">TBB_USE_ASSERT</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p>Setting of macro
<samp class="codeph">TBB_USE_ASSERT</samp>
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">DO_ITT_NOTIFY</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p><samp class="codeph">1</samp> if library can enable
instrumentation for Intel® Parallel Studio XE and Intel® Threading Tools;
<samp class="codeph">0</samp> or
<samp class="codeph">undefined</samp> otherwise.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">ITT</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p><samp class="codeph">yes</samp> if library has enabled
instrumentation for Intel® Parallel Studio XE and Intel® Threadng Tools, no
otherwise. Typically
<samp class="codeph">yes</samp> only if the program is running under
control of Intel® Parallel Studio XE or Intel® Threadng Tools.
</p>
</td>
</tr>
<tr>
<td class="cellrowborder" valign="top" width="NaN%" headers="d61139e217 ">
<p><samp class="codeph">ALLOCATOR</samp>
</p>
</td>
<td class="row-nocellborder" valign="top" width="NaN%" headers="d61139e225 ">
<p>Underlying allocator for
<samp class="codeph">tbb::tbb_allocator</samp>. It is
<samp class="codeph">scalable_malloc</samp> if the Intel® TBB malloc
library was successfully loaded;
<samp class="codeph">malloc</samp> otherwise.
</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="Note"><h3 class="NoteTipHead">
Caution</h3>
<p>This output is implementation specific and may
change at any time.
</p>
</div>
</div>
<div class="section"><h2 class="sectiontitle"><samp class="codeph">TBB_runtime_interface_version</samp>
Function</h2>
<p><strong>Summary</strong>
</p>
<p>Function that returns the interface version of the
Intel® TBB library that was loaded at runtime.
</p>
</div>
<div class="section"><h2 class="sectiontitle">Syntax</h2>
<p>
<pre>extern “C” int TBB_runtime_interface_version();</pre>
</p>
</div>
<div class="section"><h2 class="sectiontitle">Header</h2>
<p>
<pre>#include "tbb/tbb_stddef.h"</pre>
</p>
</div>
<div class="section"><h2 class="sectiontitle">Description</h2>
<p>The value returned by
<samp class="codeph">TBB_runtime_interface_version()</samp> may differ from the
value of
<samp class="codeph">TBB_INTERFACE_VERSION</samp> obtained at compile time. This
can be used to identify whether an application was compiled against a
compatible version of the Intel® TBB headers.
</p>
<p>In general, the run-time value
<samp class="codeph">TBB_runtime_interface_version()</samp> must be greater than
or equal to the compile-time value of TBB_INTERFACE_VERSION. Otherwise the
application may fail to resolve all symbols at run time.
</p>
</div>
</div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="../../reference/environment.htm">Environment</a></div>
</div>
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