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T
Hans Johnson e32d75f876 ENH: Update to TBB 2017 (2016-09-08 release) 
The new release TBB is now under a new more
open license.
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

The list of most significant changes made over time in
Intel(R) Threading Building Blocks (Intel(R) TBB).

Intel TBB 2017
TBB_INTERFACE_VERSION == 9100

Changes (w.r.t. Intel TBB 4.4 Update 5):

- static_partitioner class is now a fully supported feature.
- async_node class is now a fully supported feature.
- Improved dynamic memory allocation replacement on Windows* OS to skip
    DLLs for which replacement cannot be done, instead of aborting.
- Intel TBB no longer performs dynamic memory allocation replacement
    for Microsoft* Visual Studio* 2008.
- For 64-bit platforms, quadrupled the worst-case limit on the amount
    of memory the Intel TBB allocator can handle.
- Added TBB_USE_GLIBCXX_VERSION macro to specify the version of GNU
    libstdc++ when it cannot be properly recognized, e.g. when used
    with Clang on Linux* OS. Inspired by a contribution from David A.
- Added graph/stereo example to demostrate tbb::flow::async_msg.
- Removed a few cases of excessive user data copying in the flow graph.
- Reworked split_node to eliminate unnecessary overheads.
- Added support for C++11 move semantics to the argument of
    tbb::parallel_do_feeder::add() method.
- Added C++11 move constructor and assignment operator to
    tbb::combinable template class.
- Added tbb::this_task_arena::max_concurrency() function and
    max_concurrency() method of class task_arena returning the maximal
    number of threads that can work inside an arena.
- Deprecated tbb::task_arena::current_thread_index() static method;
    use tbb::this_task_arena::current_thread_index() function instead.
- All examples for commercial version of library moved online:
    https://software.intel.com/en-us/product-code-samples. Examples are
    available as a standalone package or as a part of Intel(R) Parallel
    Studio XE or Intel(R) System Studio Online Samples packages.

Changes affecting backward compatibility:

- Renamed following methods and types in async_node class:
    Old                   New
    async_gateway_type => gateway_type
    async_gateway()    => gateway()
    async_try_put()    => try_put()
    async_reserve()    => reserve_wait()
    async_commit()     => release_wait()
- Internal layout of some flow graph nodes has changed; recompilation
    is recommended for all binaries that use the flow graph.

Preview Features:

- Added template class streaming_node to the flow graph API. It allows
    a flow graph to offload computations to other devices through
    streaming or offloading APIs.
- Template class opencl_node reimplemented as a specialization of
    streaming_node that works with OpenCL*.
- Added tbb::this_task_arena::isolate() function to isolate execution
    of a group of tasks or an algorithm from other tasks submitted
    to the scheduler.

Bugs fixed:

- Added a workaround for GCC bug #62258 in std::rethrow_exception()
    to prevent possible problems in case of exception propagation.
- Fixed parallel_scan to provide correct result if the initial value
    of an accumulator is not the operation identity value.
- Fixed a memory corruption in the memory allocator when it meets
    internal limits.
- Fixed the memory allocator on 64-bit platforms to align memory
    to 16 bytes by default for all allocations bigger than 8 bytes.
- As a workaround for crashes in the Intel TBB library compiled with
    GCC 6, added -flifetime-dse=1 to compilation options on Linux* OS.
- Fixed a race in the flow graph implementation.

Open-source contributions integrated:

- Enabling use of C++11 'override' keyword by Raf Schietekat.

------------------------------------------------------------------------
2016-09-28 21:12:48 +02:00

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<div class="title">tbb::interface6::runtime_loader Class Reference</div> </div>
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<div class="contents">
<p>Load TBB at runtime.
<a href="a00120.html#details">More...</a></p>
<p><code>#include &lt;runtime_loader.h&gt;</code></p>
<div class="dynheader">
Inheritance diagram for tbb::interface6::runtime_loader:</div>
<div class="dyncontent">
<div class="center">
<img src="a00120.png" usemap="#tbb::interface6::runtime_loader_map" alt=""/>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:ab85c82f9c0ccd91905f2795a79ac1295"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295">error_mode</a> { <a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295af9c9137d6acdb0fd37f1a92b5cdaeb36">em_status</a>,
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<a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295ac41f8e03c7e8bfc6a420be035d59cc35">em_abort</a>
}</td></tr>
<tr class="memdesc:ab85c82f9c0ccd91905f2795a79ac1295"><td class="mdescLeft">&#160;</td><td class="mdescRight">Error mode constants. <a href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295">More...</a><br/></td></tr>
<tr class="separator:ab85c82f9c0ccd91905f2795a79ac1295"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a264674772d9f4240d89aa9d939c1eef7"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">error_code</a> { <br/>
&#160;&#160;<a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7afc7eba28f2fc936312f041cf85276434">ec_ok</a>,
<a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7a670e4d0a5a3c1bbcdff9e5ee16dc9c01">ec_bad_call</a>,
<a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7afd928f63eb3da0980e746d58374b07c3">ec_bad_arg</a>,
<a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7a71f874957c0322f499ba764dd0bb8732">ec_bad_lib</a>,
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&#160;&#160;<a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7aae7497a49ceae69d06d6ab9fef636064">ec_bad_ver</a>,
<a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7a5e694560f3ada80d2cc25881b5ae43dd">ec_no_lib</a>
<br/>
}</td></tr>
<tr class="memdesc:a264674772d9f4240d89aa9d939c1eef7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Error codes. <a href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">More...</a><br/></td></tr>
<tr class="separator:a264674772d9f4240d89aa9d939c1eef7"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a2f87eaf99564c705aa140f2eb8848eaa"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2f87eaf99564c705aa140f2eb8848eaa"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#a2f87eaf99564c705aa140f2eb8848eaa">runtime_loader</a> (<a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295">error_mode</a> mode=<a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295ac41f8e03c7e8bfc6a420be035d59cc35">em_abort</a>)</td></tr>
<tr class="memdesc:a2f87eaf99564c705aa140f2eb8848eaa"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize object but do not load TBB. <br/></td></tr>
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<tr class="memitem:a3e0932074d2f3ad04605e7e5da88c561"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#a3e0932074d2f3ad04605e7e5da88c561">runtime_loader</a> (char const *path[], int min_ver=TBB_INTERFACE_VERSION, int max_ver=INT_MAX, <a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295">error_mode</a> mode=<a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295ac41f8e03c7e8bfc6a420be035d59cc35">em_abort</a>)</td></tr>
<tr class="memdesc:a3e0932074d2f3ad04605e7e5da88c561"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialize object and load TBB. <a href="#a3e0932074d2f3ad04605e7e5da88c561">More...</a><br/></td></tr>
<tr class="separator:a3e0932074d2f3ad04605e7e5da88c561"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa3b96f53e165e3d692c3c36292ba0737"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa3b96f53e165e3d692c3c36292ba0737"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#aa3b96f53e165e3d692c3c36292ba0737">~runtime_loader</a> ()</td></tr>
<tr class="memdesc:aa3b96f53e165e3d692c3c36292ba0737"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroy object. <br/></td></tr>
<tr class="separator:aa3b96f53e165e3d692c3c36292ba0737"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae2949e9adcac56a2cb9864437be8e22e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">error_code</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#ae2949e9adcac56a2cb9864437be8e22e">load</a> (char const *path[], int min_ver=TBB_INTERFACE_VERSION, int max_ver=INT_MAX)</td></tr>
<tr class="memdesc:ae2949e9adcac56a2cb9864437be8e22e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Load TBB. <a href="#ae2949e9adcac56a2cb9864437be8e22e">More...</a><br/></td></tr>
<tr class="separator:ae2949e9adcac56a2cb9864437be8e22e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a85bf9ee021a2076a3ac7cfd70aae7345"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">error_code</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00120.html#a85bf9ee021a2076a3ac7cfd70aae7345">status</a> ()</td></tr>
<tr class="memdesc:a85bf9ee021a2076a3ac7cfd70aae7345"><td class="mdescLeft">&#160;</td><td class="mdescRight">Report status. <a href="#a85bf9ee021a2076a3ac7cfd70aae7345">More...</a><br/></td></tr>
<tr class="separator:a85bf9ee021a2076a3ac7cfd70aae7345"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Load TBB at runtime. </p>
<p><b>Usage:</b> </p>
<p>In source code:</p>
<div class="fragment"><div class="line"><span class="preprocessor">#include &quot;tbb/runtime_loader.h&quot;</span></div>
<div class="line"></div>
<div class="line"><span class="keywordtype">char</span> <span class="keyword">const</span> * path[] = { <span class="stringliteral">&quot;&lt;install dir&gt;/lib/ia32&quot;</span>, NULL };</div>
<div class="line">tbb::runtime_loader loader( path );</div>
<div class="line"></div>
<div class="line"><span class="comment">// Now use TBB.</span></div>
</div><!-- fragment --><p>Link with <code>tbbproxy.lib</code> (or <code>libtbbproxy.a</code>) instead of <code>tbb.lib</code> (<code>libtbb.dylib</code>, <code>libtbb.so</code>).</p>
<p>TBB library will be loaded at runtime from <code></code> &lt;install dir&gt;=""&gt;/lib/ia32 directory.</p>
<p><b>Attention:</b> </p>
<p>All <code><a class="el" href="a00120.html" title="Load TBB at runtime. ">runtime_loader</a></code> objects (in the same module, i.e. exe or dll) share some global state. The most noticeable piece of global state is loaded TBB library. There are some implications: </p>
<pre class="fragment">- Only one TBB library can be loaded per module.
- If one object has already loaded TBB library, another object will not load TBB.
If the loaded TBB library is suitable for the second object, both will use TBB
cooperatively, otherwise the second object will report an error.
- \c runtime_loader objects will not work (correctly) in parallel due to absence of
synchronization.</pre> </div><h2 class="groupheader">Member Enumeration Documentation</h2>
<a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">tbb::interface6::runtime_loader::error_code</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Error codes. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7afc7eba28f2fc936312f041cf85276434"></a>ec_ok</em>&nbsp;</td><td class="fielddoc">
<p>No errors. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7a670e4d0a5a3c1bbcdff9e5ee16dc9c01"></a>ec_bad_call</em>&nbsp;</td><td class="fielddoc">
<p>Invalid function call (e. g. <a class="el" href="a00120.html#ae2949e9adcac56a2cb9864437be8e22e" title="Load TBB. ">load()</a> called when TBB is already loaded). </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7afd928f63eb3da0980e746d58374b07c3"></a>ec_bad_arg</em>&nbsp;</td><td class="fielddoc">
<p>Invalid argument passed. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7a71f874957c0322f499ba764dd0bb8732"></a>ec_bad_lib</em>&nbsp;</td><td class="fielddoc">
<p>Invalid library found (e. g. <code>TBB_runtime_version</code> symbol not found). </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7aae7497a49ceae69d06d6ab9fef636064"></a>ec_bad_ver</em>&nbsp;</td><td class="fielddoc">
<p>TBB found but version is not suitable. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a264674772d9f4240d89aa9d939c1eef7a5e694560f3ada80d2cc25881b5ae43dd"></a>ec_no_lib</em>&nbsp;</td><td class="fielddoc">
<p>No suitable TBB library found. </p>
</td></tr>
</table>
</div>
</div>
<a class="anchor" id="ab85c82f9c0ccd91905f2795a79ac1295"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295">tbb::interface6::runtime_loader::error_mode</a></td>
</tr>
</table>
</div><div class="memdoc">
<p>Error mode constants. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="ab85c82f9c0ccd91905f2795a79ac1295af9c9137d6acdb0fd37f1a92b5cdaeb36"></a>em_status</em>&nbsp;</td><td class="fielddoc">
<p>Save status of operation and continue. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="ab85c82f9c0ccd91905f2795a79ac1295a17ec1019cffa635146eaefb042e28a2c"></a>em_throw</em>&nbsp;</td><td class="fielddoc">
<p>Throw an exception of tbb::runtime_loader::error_code type. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="ab85c82f9c0ccd91905f2795a79ac1295ac41f8e03c7e8bfc6a420be035d59cc35"></a>em_abort</em>&nbsp;</td><td class="fielddoc">
<p>Print message to <code>stderr</code> and call <code>abort()</code>. </p>
</td></tr>
</table>
</div>
</div>
<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a3e0932074d2f3ad04605e7e5da88c561"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">tbb::interface6::runtime_loader::runtime_loader </td>
<td>(</td>
<td class="paramtype">char const *&#160;</td>
<td class="paramname"><em>path</em>[], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>min_ver</em> = <code>TBB_INTERFACE_VERSION</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>max_ver</em> = <code>INT_MAX</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295">error_mode</a>&#160;</td>
<td class="paramname"><em>mode</em> = <code><a class="el" href="a00120.html#ab85c82f9c0ccd91905f2795a79ac1295ac41f8e03c7e8bfc6a420be035d59cc35">em_abort</a></code>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize object and load TBB. </p>
<p>See <a class="el" href="a00120.html#ae2949e9adcac56a2cb9864437be8e22e" title="Load TBB. ">load()</a> for details.</p>
<p>If error mode is <code>em_status</code>, call <a class="el" href="a00120.html#a85bf9ee021a2076a3ac7cfd70aae7345" title="Report status. ">status()</a> to check whether TBB was loaded or not. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">path</td><td>List of directories to search TBB in. </td></tr>
<tr><td class="paramname">min_ver</td><td>Minimal suitable version of TBB. </td></tr>
<tr><td class="paramname">max_ver</td><td>Maximal suitable version of TBB. </td></tr>
<tr><td class="paramname">mode</td><td>Error mode for this object. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="ae2949e9adcac56a2cb9864437be8e22e"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">error_code</a> tbb::interface6::runtime_loader::load </td>
<td>(</td>
<td class="paramtype">char const *&#160;</td>
<td class="paramname"><em>path</em>[], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>min_ver</em> = <code>TBB_INTERFACE_VERSION</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
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<td class="paramname"><em>max_ver</em> = <code>INT_MAX</code>&#160;</td>
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<p>Load TBB. </p>
<p>The method searches the directories specified in <code>path</code>[] array for the TBB library. When the library is found, it is loaded and its version is checked. If the version is not suitable, the library is unloaded, and the search continues.</p>
<p><b>Note:</b> </p>
<p>For security reasons, avoid using relative directory names. For example, never load TBB from current (<code>"."</code>), parent (<code>".."</code>) or any other relative directory (like <code>"lib"</code> ). Use only absolute directory names (e. g. "/usr/local/lib").</p>
<p>For the same security reasons, avoid using system default directories (<code>""</code>) on Windows. (See <a href="http://www.microsoft.com/technet/security/advisory/2269637.mspx">http://www.microsoft.com/technet/security/advisory/2269637.mspx</a> for details.)</p>
<p>Neglecting these rules may cause your program to execute 3-rd party malicious code.</p>
<p><b>Errors:</b> </p>
<ul>
<li><code>ec_bad_call</code> - TBB already loaded by this object.</li>
<li><code>ec_bad_arg</code> - <code>min_ver</code> and/or <code>max_ver</code> negative or zero, or <code>min_ver</code> &gt; <code>max_ver</code>.</li>
<li><code>ec_bad_ver</code> - TBB of unsuitable version already loaded by another object.</li>
<li><code>ec_no_lib</code> - No suitable library found. </li>
</ul>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">path</td><td>List of directories to search TBB in. </td></tr>
<tr><td class="paramname">min_ver</td><td>Minimal suitable version of TBB. </td></tr>
<tr><td class="paramname">max_ver</td><td>Maximal suitable version of TBB. </td></tr>
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<td class="memname"><a class="el" href="a00120.html#a264674772d9f4240d89aa9d939c1eef7">error_code</a> tbb::interface6::runtime_loader::status </td>
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<p>Report status. </p>
<p>If error mode is <code>em_status</code>, the function returns status of the last operation. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>runtime_loader.h</li>
</ul>
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