mirror of
https://github.com/wjakob/tbb.git
synced 2026-08-30 00:50:40 +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.
------------------------------------------------------------------------
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
/*
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Copyright (c) 2005-2016 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#ifndef __TBBexample_graph_logicsim_dlatch_H
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#define __TBBexample_graph_logicsim_dlatch_H 1
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#include "basics.h"
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class D_latch : public composite_node< tuple< signal_t, signal_t >, tuple< signal_t, signal_t > > {
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broadcast_node<signal_t> D_port;
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broadcast_node<signal_t> E_port;
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not_gate a_not;
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and_gate<2> first_and;
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and_gate<2> second_and;
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nor_gate<2> first_nor;
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nor_gate<2> second_nor;
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graph& my_graph;
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typedef composite_node< tuple< signal_t, signal_t >, tuple< signal_t, signal_t > > base_type;
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public:
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D_latch(graph& g) : base_type(g), my_graph(g), D_port(g), E_port(g), a_not(g), first_and(g), second_and(g),
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first_nor(g), second_nor(g)
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{
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make_edge(D_port, input_port<0>(a_not));
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make_edge(D_port, input_port<1>(second_and));
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make_edge(E_port, input_port<1>(first_and));
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make_edge(E_port, input_port<0>(second_and));
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make_edge(a_not, input_port<0>(first_and));
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make_edge(first_and, input_port<0>(first_nor));
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make_edge(second_and, input_port<1>(second_nor));
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make_edge(first_nor, input_port<0>(second_nor));
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make_edge(second_nor, input_port<1>(first_nor));
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base_type::input_ports_type input_tuple(D_port, E_port);
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base_type::output_ports_type output_tuple(output_port<0>(first_nor), output_port<0>(second_nor));
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base_type::set_external_ports(input_tuple, output_tuple);
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base_type::add_visible_nodes(D_port, E_port, a_not, first_and, second_and, first_nor, second_nor);
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}
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~D_latch() {}
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};
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#endif /* __TBBexample_graph_logicsim_dlatch_H */
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