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80 lines
2.5 KiB
80 lines
2.5 KiB
/*
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* Created by Joachim on 16/04/2019.
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* Adapted from donated nonius code.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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// Constructor and destructor helpers
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#ifndef TWOBLUECUBES_CATCH_CONSTRUCTOR_HPP_INCLUDED
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#define TWOBLUECUBES_CATCH_CONSTRUCTOR_HPP_INCLUDED
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#include <type_traits>
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namespace Catch {
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namespace Benchmark {
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namespace Detail {
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template <typename T, bool Destruct>
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struct ObjectStorage
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{
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using TStorage = typename std::aligned_storage<sizeof(T), std::alignment_of<T>::value>::type;
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ObjectStorage() : data() {}
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ObjectStorage(const ObjectStorage& other)
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{
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new(&data) T(other.stored_object());
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}
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ObjectStorage(ObjectStorage&& other)
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{
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new(&data) T(std::move(other.stored_object()));
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}
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~ObjectStorage() { destruct_on_exit<T>(); }
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template <typename... Args>
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void construct(Args&&... args)
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{
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new (&data) T(std::forward<Args>(args)...);
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}
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template <bool AllowManualDestruction = !Destruct>
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typename std::enable_if<AllowManualDestruction>::type destruct()
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{
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stored_object().~T();
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}
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private:
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// If this is a constructor benchmark, destruct the underlying object
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template <typename U>
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void destruct_on_exit(typename std::enable_if<Destruct, U>::type* = 0) { destruct<true>(); }
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// Otherwise, don't
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template <typename U>
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void destruct_on_exit(typename std::enable_if<!Destruct, U>::type* = 0) { }
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T& stored_object() {
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return *static_cast<T*>(static_cast<void*>(&data));
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}
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T const& stored_object() const {
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return *static_cast<T*>(static_cast<void*>(&data));
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}
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TStorage data;
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};
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}
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template <typename T>
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using storage_for = Detail::ObjectStorage<T, true>;
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template <typename T>
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using destructable_object = Detail::ObjectStorage<T, false>;
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}
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}
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#endif // TWOBLUECUBES_CATCH_CONSTRUCTOR_HPP_INCLUDED
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