mirror of
https://github.com/wjakob/tbb.git
synced 2026-08-31 01:20:42 +08:00
Hans Johnson
e32d75f876
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.
------------------------------------------------------------------------
147 lines
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147 lines
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<ul>
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<li class="navelem"><a class="el" href="a00228.html">tbb</a></li><li class="navelem"><a class="el" href="a00057.html">filter</a></li> </ul>
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<a href="#pro-static-attribs">Static Protected Attributes</a> |
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<a href="a00278.html">List of all members</a> </div>
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<div class="title">tbb::filter Class Reference<div class="ingroups"><a class="el" href="a00246.html">Algorithms</a></div></div> </div>
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<p>A stage in a pipeline.
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<a href="a00057.html#details">More...</a></p>
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<p><code>#include <pipeline.h></code></p>
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Inheritance diagram for tbb::filter:</div>
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<area href="a00153.html" title="A stage in a pipeline served by a user thread. " alt="tbb::thread_bound_filter" shape="rect" coords="0,112,145,136"/>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-static-attribs"></a>
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Static Protected Attributes</h2></td></tr>
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<tr class="memitem:ae9dab2e01b0963b341ab04b59eec1475"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae9dab2e01b0963b341ab04b59eec1475"></a>
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static const unsigned char </td><td class="memItemRight" valign="bottom"><a class="el" href="a00057.html#ae9dab2e01b0963b341ab04b59eec1475">filter_is_serial</a> = 0x1</td></tr>
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<tr class="memdesc:ae9dab2e01b0963b341ab04b59eec1475"><td class="mdescLeft"> </td><td class="mdescRight">The lowest bit 0 is for parallel vs. serial. <br/></td></tr>
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<tr class="separator:ae9dab2e01b0963b341ab04b59eec1475"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a091fcf6abc79edfa5c8bf01f742e2392"><td class="memItemLeft" align="right" valign="top">static const unsigned char </td><td class="memItemRight" valign="bottom"><a class="el" href="a00057.html#a091fcf6abc79edfa5c8bf01f742e2392">filter_is_out_of_order</a> = 0x1<<4</td></tr>
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<tr class="memdesc:a091fcf6abc79edfa5c8bf01f742e2392"><td class="mdescLeft"> </td><td class="mdescRight">4th bit distinguishes ordered vs unordered filters. <a href="#a091fcf6abc79edfa5c8bf01f742e2392">More...</a><br/></td></tr>
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<tr class="memitem:a1382f216bd094064a18eb48ecc43c86b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1382f216bd094064a18eb48ecc43c86b"></a>
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static const unsigned char </td><td class="memItemRight" valign="bottom"><a class="el" href="a00057.html#a1382f216bd094064a18eb48ecc43c86b">filter_is_bound</a> = 0x1<<5</td></tr>
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<tr class="memdesc:a1382f216bd094064a18eb48ecc43c86b"><td class="mdescLeft"> </td><td class="mdescRight">5th bit distinguishes thread-bound and regular filters. <br/></td></tr>
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<tr class="memitem:a6645ec56872b6ba2056dcaa467e292f7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6645ec56872b6ba2056dcaa467e292f7"></a>
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static const unsigned char </td><td class="memItemRight" valign="bottom"><a class="el" href="a00057.html#a6645ec56872b6ba2056dcaa467e292f7">filter_may_emit_null</a> = 0x1<<6</td></tr>
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<tr class="memdesc:a6645ec56872b6ba2056dcaa467e292f7"><td class="mdescLeft"> </td><td class="mdescRight">6th bit marks input filters emitting small objects <br/></td></tr>
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<tr class="separator:a6645ec56872b6ba2056dcaa467e292f7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aab9689e23a96c6c9bf1c8caae74d92ee"><td class="memItemLeft" align="right" valign="top">static const unsigned char </td><td class="memItemRight" valign="bottom"><a class="el" href="a00057.html#aab9689e23a96c6c9bf1c8caae74d92ee">exact_exception_propagation</a></td></tr>
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<tr class="memdesc:aab9689e23a96c6c9bf1c8caae74d92ee"><td class="mdescLeft"> </td><td class="mdescRight">7th bit defines exception propagation mode expected by the application. <a href="#aab9689e23a96c6c9bf1c8caae74d92ee">More...</a><br/></td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>A stage in a pipeline. </p>
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<td class="memname">const unsigned char tbb::filter::exact_exception_propagation</td>
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<b>Initial value:</b><div class="fragment"><div class="line">=</div>
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<div class="line"><span class="preprocessor">#if TBB_USE_CAPTURED_EXCEPTION</span></div>
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<div class="line"><span class="preprocessor"> 0x0</span></div>
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<p>7th bit defines exception propagation mode expected by the application. </p>
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<td class="memname">const unsigned char tbb::filter::filter_is_out_of_order = 0x1<<4</td>
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<p>4th bit distinguishes ordered vs unordered filters. </p>
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<p>The bit was not set for parallel filters in TBB 2.1 and earlier, but is_ordered() function always treats parallel filters as out of order. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li>pipeline.h</li>
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<hr>
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<p></p>
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Copyright © 2005-2016 Intel Corporation. All Rights Reserved.
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<p></p>
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Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are
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registered trademarks or trademarks of Intel Corporation or its
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subsidiaries in the United States and other countries.
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* Other names and brands may be claimed as the property of others.
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