mirror of
https://github.com/wjakob/tbb.git
synced 2026-08-30 17:10:41 +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.
------------------------------------------------------------------------
227 lines
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227 lines
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<li class="navelem"><a class="el" href="a00228.html">tbb</a></li><li class="navelem"><a class="el" href="a00150.html">tbb_exception</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">tbb::tbb_exception Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Interface to be implemented by all exceptions TBB recognizes and propagates across the threads.
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<a href="a00150.html#details">More...</a></p>
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<p><code>#include <tbb_exception.h></code></p>
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Inheritance diagram for tbb::tbb_exception:</div>
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<area href="a00076.html" title="Template that can be used to implement exception that transfers arbitrary ExceptionData to the root t..." alt="tbb::movable_exception< ExceptionData >" shape="rect" coords="258,112,506,136"/>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a4bd4ba0d501021013d1473d21b020b69"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="a00150.html">tbb_exception</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html#a4bd4ba0d501021013d1473d21b020b69">move</a> ()=0 throw ()</td></tr>
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<tr class="memdesc:a4bd4ba0d501021013d1473d21b020b69"><td class="mdescLeft"> </td><td class="mdescRight">Creates and returns pointer to the deep copy of this exception object. <a href="#a4bd4ba0d501021013d1473d21b020b69">More...</a><br/></td></tr>
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<tr class="separator:a4bd4ba0d501021013d1473d21b020b69"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad3bc09bf78c33f19a0bcdf882fdf9d41"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html#ad3bc09bf78c33f19a0bcdf882fdf9d41">destroy</a> ()=0 throw ()</td></tr>
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<tr class="memdesc:ad3bc09bf78c33f19a0bcdf882fdf9d41"><td class="mdescLeft"> </td><td class="mdescRight">Destroys objects created by the <a class="el" href="a00150.html#a4bd4ba0d501021013d1473d21b020b69" title="Creates and returns pointer to the deep copy of this exception object. ">move()</a> method. <a href="#ad3bc09bf78c33f19a0bcdf882fdf9d41">More...</a><br/></td></tr>
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<tr class="separator:ad3bc09bf78c33f19a0bcdf882fdf9d41"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae45c08d36c7ec7ae91785da3515a8828"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html#ae45c08d36c7ec7ae91785da3515a8828">throw_self</a> ()=0</td></tr>
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<tr class="memdesc:ae45c08d36c7ec7ae91785da3515a8828"><td class="mdescLeft"> </td><td class="mdescRight">Throws this exception object. <a href="#ae45c08d36c7ec7ae91785da3515a8828">More...</a><br/></td></tr>
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<tr class="memitem:a282bb7dce5f157d044d14d50cd6ff35c"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a282bb7dce5f157d044d14d50cd6ff35c"></a>
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virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html#a282bb7dce5f157d044d14d50cd6ff35c">name</a> () const =0 throw ()</td></tr>
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<tr class="memdesc:a282bb7dce5f157d044d14d50cd6ff35c"><td class="mdescLeft"> </td><td class="mdescRight">Returns RTTI name of the originally intercepted exception. <br/></td></tr>
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<tr class="memitem:aa6739787c42d80943e18913cce47f42f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa6739787c42d80943e18913cce47f42f"></a>
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virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html#aa6739787c42d80943e18913cce47f42f">what</a> () const __TBB_override=0 throw ()</td></tr>
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<tr class="memdesc:aa6739787c42d80943e18913cce47f42f"><td class="mdescLeft"> </td><td class="mdescRight">Returns the result of originally intercepted exception's <a class="el" href="a00150.html#aa6739787c42d80943e18913cce47f42f" title="Returns the result of originally intercepted exception's what() method. ">what()</a> method. <br/></td></tr>
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<tr class="memitem:a6a973c37078afedf7d457ff4704bf8cd"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html#a6a973c37078afedf7d457ff4704bf8cd">operator delete</a> (void *p)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Interface to be implemented by all exceptions TBB recognizes and propagates across the threads. </p>
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<p>If an unhandled exception of the type derived from <a class="el" href="a00150.html" title="Interface to be implemented by all exceptions TBB recognizes and propagates across the threads...">tbb::tbb_exception</a> is intercepted by the TBB scheduler in one of the worker threads, it is delivered to and re-thrown in the root thread. The root thread is the thread that has started the outermost algorithm or root task sharing the same <a class="el" href="a00142.html">task_group_context</a> with the guilty algorithm/task (the one that threw the exception first).</p>
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<p>Note: when documentation mentions workers with respect to exception handling, masters are implied as well, because they are completely equivalent in this context. Consequently a root thread can be master or worker thread.</p>
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<p>NOTE: In case of nested algorithms or complex task hierarchies when the nested levels share (explicitly or by means of implicit inheritance) the task group context of the outermost level, the exception may be (re-)thrown multiple times (ultimately - in each worker on each nesting level) before reaching the root thread at the outermost level. IMPORTANT: if you intercept an exception derived from this class on a nested level, you must re-throw it in the catch block by means of the "throw;" operator.</p>
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<p>TBB provides two implementations of this interface: <a class="el" href="a00032.html" title="This class is used by TBB to propagate information about unhandled exceptions into the root thread...">tbb::captured_exception</a> and template class <a class="el" href="a00076.html" title="Template that can be used to implement exception that transfers arbitrary ExceptionData to the root t...">tbb::movable_exception</a>. See their declarations for more info. </p>
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</div><h2 class="groupheader">Member Function Documentation</h2>
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<td align="right">throw </td><td>(</td><td colspan="2"></td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Destroys objects created by the <a class="el" href="a00150.html#a4bd4ba0d501021013d1473d21b020b69" title="Creates and returns pointer to the deep copy of this exception object. ">move()</a> method. </p>
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<p>Frees memory and calls destructor for this exception object. Can and must be used only on objects created by the move method. </p>
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<p>Implemented in <a class="el" href="a00076.html#aa4be7e2bf375edcb218fb5d7ed8e279b">tbb::movable_exception< ExceptionData ></a>, and <a class="el" href="a00032.html#abfc1220a6f9da0361082a3f3ad80cdc9">tbb::captured_exception</a>.</p>
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<td class="memname">virtual <a class="el" href="a00150.html">tbb_exception</a>* tbb::tbb_exception::move </td>
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<p>Creates and returns pointer to the deep copy of this exception object. </p>
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<p>Move semantics is allowed. </p>
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<p>Implemented in <a class="el" href="a00076.html#a46eee42a3279007f48c9e8f11d074d16">tbb::movable_exception< ExceptionData ></a>, and <a class="el" href="a00032.html#a3b75205c631b51a00faf98c9e107f78a">tbb::captured_exception</a>.</p>
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<p>Operator delete is provided only to allow using existing smart pointers with TBB exception objects obtained as the result of applying <a class="el" href="a00150.html#a4bd4ba0d501021013d1473d21b020b69" title="Creates and returns pointer to the deep copy of this exception object. ">move()</a> operation on an exception thrown out of TBB scheduler.</p>
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<p>When overriding method <a class="el" href="a00150.html#a4bd4ba0d501021013d1473d21b020b69" title="Creates and returns pointer to the deep copy of this exception object. ">move()</a> make sure to override operator delete as well if memory is allocated not by TBB's scalable allocator. </p>
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<p>Throws this exception object. </p>
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<p>Make sure that if you have several levels of derivation from this interface you implement or override this method on the most derived level. The implementation is as simple as "throw *this;". Failure to do this will result in exception of a base class type being thrown. </p>
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<p>Implemented in <a class="el" href="a00076.html#a0e9ac8a4468eb0ff3b2bb246b806a10e">tbb::movable_exception< ExceptionData ></a>, and <a class="el" href="a00032.html#a6df0d3a1943ca6f84a9a9aca25e9633d">tbb::captured_exception</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li>tbb_exception.h</li>
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</ul>
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</div><!-- contents -->
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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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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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<p></p>
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* Other names and brands may be claimed as the property of others.
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