mirror of
https://github.com/vtil-project/VTIL-Core
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85 lines
No EOL
3.1 KiB
C++
85 lines
No EOL
3.1 KiB
C++
// Copyright (c) 2020 Can Boluk and contributors of the VTIL Project
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. Neither the name of VTIL Project nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#pragma once
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#include <iterator>
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#include <vector>
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#include "task.hpp"
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#include "type_helpers.hpp"
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#include "intrinsics.hpp"
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// [Configuration]
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// Determine whether or not to use parallel transformations.
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//
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#ifndef VTIL_USE_PARALLEL_TRANSFORM
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#if _DEBUG
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#define VTIL_USE_PARALLEL_TRANSFORM false
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#else
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#define VTIL_USE_PARALLEL_TRANSFORM true
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#endif
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#endif
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namespace vtil
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{
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namespace impl
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{
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template<typename T>
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__forceinline static decltype( auto ) ref_adjust( T&& x )
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{
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if constexpr ( std::is_reference_v<T> )
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return std::ref( x );
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else
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return x;
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}
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};
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// Generic parallel worker helper.
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//
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template<Iterable C, typename F> requires Invocable<F, void, iterator_reference_type_t<C>>
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static void transform_parallel( C&& container, const F& worker )
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{
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size_t container_size = std::size( container );
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// If parallel transformation is disabled or if the container only has one entry,
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// fallback to serial transformation.
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//
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if ( !VTIL_USE_PARALLEL_TRANSFORM || container_size == 1 )
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{
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for ( auto it = std::begin( container ); it != std::end( container ); ++it )
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worker( *it );
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}
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// Otherwise, create task pool and insert for each entry.
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//
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else
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{
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std::vector<task::instance> tasks;
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tasks.reserve( container_size );
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for ( auto it = std::begin( container ); it != std::end( container ); ++it )
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tasks.emplace_back( [ &worker, value = impl::ref_adjust( *it ) ] () { worker( value ); } );
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}
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}
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}; |