42 lines
985 B
C++
42 lines
985 B
C++
// Copyright 2021 Hans Dembinski
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//
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// Distributed under the Boost Software License, version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_HISTOGRAM_ACCUMULATORS_IS_THREAD_SAFE_HPP
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#define BOOST_HISTOGRAM_ACCUMULATORS_IS_THREAD_SAFE_HPP
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#include <boost/histogram/detail/priority.hpp>
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#include <boost/histogram/fwd.hpp>
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#include <type_traits>
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namespace boost {
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namespace histogram {
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namespace detail {
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template <class T>
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constexpr bool is_thread_safe_impl(priority<0>) {
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return false;
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}
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template <class T>
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constexpr auto is_thread_safe_impl(priority<1>) -> decltype(T::thread_safe()) {
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return T::thread_safe();
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}
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} // namespace detail
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namespace accumulators {
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template <class T>
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struct is_thread_safe
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: std::integral_constant<bool,
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detail::is_thread_safe_impl<T>(detail::priority<1>{})> {};
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} // namespace accumulators
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} // namespace histogram
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} // namespace boost
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#endif
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