278 lines
9.8 KiB
C++
278 lines
9.8 KiB
C++
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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 or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* Copyright (c) 2011 Helge Bahmann
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* Copyright (c) 2013 Tim Blechmann
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* Copyright (c) 2014, 2020 Andrey Semashev
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*/
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/*!
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* \file atomic/atomic.hpp
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*
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* This header contains definition of \c atomic template.
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*/
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#ifndef BOOST_ATOMIC_ATOMIC_HPP_INCLUDED_
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#define BOOST_ATOMIC_ATOMIC_HPP_INCLUDED_
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#include <cstddef>
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#include <boost/cstdint.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/memory_order.hpp>
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#include <boost/atomic/capabilities.hpp>
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#include <boost/atomic/detail/config.hpp>
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#include <boost/atomic/detail/classify.hpp>
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#include <boost/atomic/detail/atomic_impl.hpp>
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#include <boost/atomic/detail/type_traits/is_trivially_copyable.hpp>
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#include <boost/atomic/detail/type_traits/is_nothrow_default_constructible.hpp>
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#include <boost/atomic/detail/header.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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namespace atomics {
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//! Atomic object
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template< typename T >
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class atomic :
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public atomics::detail::base_atomic< T, typename atomics::detail::classify< T >::type, false >
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{
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private:
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typedef atomics::detail::base_atomic< T, typename atomics::detail::classify< T >::type, false > base_type;
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typedef typename base_type::value_arg_type value_arg_type;
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public:
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typedef typename base_type::value_type value_type;
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// Deprecated, use value_type instead
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BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED
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typedef typename base_type::storage_type storage_type;
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BOOST_STATIC_ASSERT_MSG(sizeof(value_type) > 0u, "boost::atomic<T> requires T to be a complete type");
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#if !defined(BOOST_ATOMIC_DETAIL_NO_CXX11_IS_TRIVIALLY_COPYABLE)
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BOOST_STATIC_ASSERT_MSG(atomics::detail::is_trivially_copyable< value_type >::value, "boost::atomic<T> requires T to be a trivially copyable type");
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#endif
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public:
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BOOST_FORCEINLINE BOOST_ATOMIC_DETAIL_CONSTEXPR_UNION_INIT atomic() BOOST_NOEXCEPT_IF(atomics::detail::is_nothrow_default_constructible< value_type >::value) : base_type()
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{
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}
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BOOST_FORCEINLINE BOOST_ATOMIC_DETAIL_CONSTEXPR_UNION_INIT atomic(value_arg_type v) BOOST_NOEXCEPT : base_type(v)
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{
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}
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BOOST_FORCEINLINE value_type operator= (value_arg_type v) BOOST_NOEXCEPT
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{
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this->store(v);
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return v;
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}
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BOOST_FORCEINLINE value_type operator= (value_arg_type v) volatile BOOST_NOEXCEPT
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{
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this->store(v);
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return v;
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}
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BOOST_FORCEINLINE operator value_type() const volatile BOOST_NOEXCEPT
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{
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return this->load();
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}
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// Deprecated, use value() instead
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BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED
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BOOST_FORCEINLINE typename base_type::storage_type& storage() BOOST_NOEXCEPT { return base_type::storage(); }
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BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED
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BOOST_FORCEINLINE typename base_type::storage_type volatile& storage() volatile BOOST_NOEXCEPT { return base_type::storage(); }
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BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED
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BOOST_FORCEINLINE typename base_type::storage_type const& storage() const BOOST_NOEXCEPT { return base_type::storage(); }
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BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED
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BOOST_FORCEINLINE typename base_type::storage_type const volatile& storage() const volatile BOOST_NOEXCEPT { return base_type::storage(); }
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BOOST_DELETED_FUNCTION(atomic(atomic const&))
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BOOST_DELETED_FUNCTION(atomic& operator= (atomic const&))
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BOOST_DELETED_FUNCTION(atomic& operator= (atomic const&) volatile)
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};
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typedef atomic< char > atomic_char;
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typedef atomic< unsigned char > atomic_uchar;
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typedef atomic< signed char > atomic_schar;
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typedef atomic< uint8_t > atomic_uint8_t;
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typedef atomic< int8_t > atomic_int8_t;
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typedef atomic< unsigned short > atomic_ushort;
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typedef atomic< short > atomic_short;
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typedef atomic< uint16_t > atomic_uint16_t;
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typedef atomic< int16_t > atomic_int16_t;
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typedef atomic< unsigned int > atomic_uint;
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typedef atomic< int > atomic_int;
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typedef atomic< uint32_t > atomic_uint32_t;
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typedef atomic< int32_t > atomic_int32_t;
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typedef atomic< unsigned long > atomic_ulong;
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typedef atomic< long > atomic_long;
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typedef atomic< uint64_t > atomic_uint64_t;
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typedef atomic< int64_t > atomic_int64_t;
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#ifdef BOOST_HAS_LONG_LONG
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typedef atomic< boost::ulong_long_type > atomic_ullong;
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typedef atomic< boost::long_long_type > atomic_llong;
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#endif
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typedef atomic< void* > atomic_address;
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typedef atomic< bool > atomic_bool;
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typedef atomic< wchar_t > atomic_wchar_t;
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#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811
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typedef atomic< char8_t > atomic_char8_t;
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#endif
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#if !defined(BOOST_NO_CXX11_CHAR16_T)
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typedef atomic< char16_t > atomic_char16_t;
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#endif
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#if !defined(BOOST_NO_CXX11_CHAR32_T)
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typedef atomic< char32_t > atomic_char32_t;
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#endif
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typedef atomic< int_least8_t > atomic_int_least8_t;
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typedef atomic< uint_least8_t > atomic_uint_least8_t;
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typedef atomic< int_least16_t > atomic_int_least16_t;
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typedef atomic< uint_least16_t > atomic_uint_least16_t;
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typedef atomic< int_least32_t > atomic_int_least32_t;
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typedef atomic< uint_least32_t > atomic_uint_least32_t;
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typedef atomic< int_least64_t > atomic_int_least64_t;
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typedef atomic< uint_least64_t > atomic_uint_least64_t;
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typedef atomic< int_fast8_t > atomic_int_fast8_t;
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typedef atomic< uint_fast8_t > atomic_uint_fast8_t;
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typedef atomic< int_fast16_t > atomic_int_fast16_t;
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typedef atomic< uint_fast16_t > atomic_uint_fast16_t;
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typedef atomic< int_fast32_t > atomic_int_fast32_t;
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typedef atomic< uint_fast32_t > atomic_uint_fast32_t;
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typedef atomic< int_fast64_t > atomic_int_fast64_t;
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typedef atomic< uint_fast64_t > atomic_uint_fast64_t;
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typedef atomic< intmax_t > atomic_intmax_t;
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typedef atomic< uintmax_t > atomic_uintmax_t;
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#if !defined(BOOST_ATOMIC_NO_FLOATING_POINT)
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typedef atomic< float > atomic_float_t;
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typedef atomic< double > atomic_double_t;
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typedef atomic< long double > atomic_long_double_t;
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#endif
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typedef atomic< std::size_t > atomic_size_t;
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typedef atomic< std::ptrdiff_t > atomic_ptrdiff_t;
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#if defined(BOOST_HAS_INTPTR_T)
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typedef atomic< boost::intptr_t > atomic_intptr_t;
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typedef atomic< boost::uintptr_t > atomic_uintptr_t;
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#endif
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// Select the lock-free atomic types that has natively supported waiting/notifying operations.
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// Prefer 32-bit types the most as those have the best performance on current 32 and 64-bit architectures.
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#if BOOST_ATOMIC_INT32_LOCK_FREE == 2 && BOOST_ATOMIC_HAS_NATIVE_INT32_WAIT_NOTIFY == 2
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typedef atomic< uint32_t > atomic_unsigned_lock_free;
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typedef atomic< int32_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT64_LOCK_FREE == 2 && BOOST_ATOMIC_HAS_NATIVE_INT64_WAIT_NOTIFY == 2
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typedef atomic< uint64_t > atomic_unsigned_lock_free;
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typedef atomic< int64_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT16_LOCK_FREE == 2 && BOOST_ATOMIC_HAS_NATIVE_INT16_WAIT_NOTIFY == 2
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typedef atomic< uint16_t > atomic_unsigned_lock_free;
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typedef atomic< int16_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT8_LOCK_FREE == 2 && BOOST_ATOMIC_HAS_NATIVE_INT8_WAIT_NOTIFY == 2
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typedef atomic< uint8_t > atomic_unsigned_lock_free;
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typedef atomic< int8_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT32_LOCK_FREE == 2
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typedef atomic< uint32_t > atomic_unsigned_lock_free;
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typedef atomic< int32_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT64_LOCK_FREE == 2
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typedef atomic< uint64_t > atomic_unsigned_lock_free;
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typedef atomic< int64_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT16_LOCK_FREE == 2
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typedef atomic< uint16_t > atomic_unsigned_lock_free;
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typedef atomic< int16_t > atomic_signed_lock_free;
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#elif BOOST_ATOMIC_INT8_LOCK_FREE == 2
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typedef atomic< uint8_t > atomic_unsigned_lock_free;
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typedef atomic< int8_t > atomic_signed_lock_free;
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#else
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#define BOOST_ATOMIC_DETAIL_NO_LOCK_FREE_TYPEDEFS
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#endif
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} // namespace atomics
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using atomics::atomic;
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using atomics::atomic_char;
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using atomics::atomic_uchar;
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using atomics::atomic_schar;
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using atomics::atomic_uint8_t;
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using atomics::atomic_int8_t;
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using atomics::atomic_ushort;
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using atomics::atomic_short;
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using atomics::atomic_uint16_t;
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using atomics::atomic_int16_t;
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using atomics::atomic_uint;
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using atomics::atomic_int;
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using atomics::atomic_uint32_t;
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using atomics::atomic_int32_t;
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using atomics::atomic_ulong;
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using atomics::atomic_long;
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using atomics::atomic_uint64_t;
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using atomics::atomic_int64_t;
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#ifdef BOOST_HAS_LONG_LONG
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using atomics::atomic_ullong;
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using atomics::atomic_llong;
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#endif
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using atomics::atomic_address;
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using atomics::atomic_bool;
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using atomics::atomic_wchar_t;
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#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811
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using atomics::atomic_char8_t;
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#endif
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#if !defined(BOOST_NO_CXX11_CHAR16_T)
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using atomics::atomic_char16_t;
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#endif
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#if !defined(BOOST_NO_CXX11_CHAR32_T)
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using atomics::atomic_char32_t;
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#endif
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using atomics::atomic_int_least8_t;
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using atomics::atomic_uint_least8_t;
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using atomics::atomic_int_least16_t;
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using atomics::atomic_uint_least16_t;
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using atomics::atomic_int_least32_t;
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using atomics::atomic_uint_least32_t;
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using atomics::atomic_int_least64_t;
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using atomics::atomic_uint_least64_t;
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using atomics::atomic_int_fast8_t;
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using atomics::atomic_uint_fast8_t;
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using atomics::atomic_int_fast16_t;
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using atomics::atomic_uint_fast16_t;
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using atomics::atomic_int_fast32_t;
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using atomics::atomic_uint_fast32_t;
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using atomics::atomic_int_fast64_t;
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using atomics::atomic_uint_fast64_t;
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using atomics::atomic_intmax_t;
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using atomics::atomic_uintmax_t;
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#if !defined(BOOST_ATOMIC_NO_FLOATING_POINT)
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using atomics::atomic_float_t;
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using atomics::atomic_double_t;
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using atomics::atomic_long_double_t;
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#endif
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using atomics::atomic_size_t;
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using atomics::atomic_ptrdiff_t;
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#if defined(BOOST_HAS_INTPTR_T)
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using atomics::atomic_intptr_t;
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using atomics::atomic_uintptr_t;
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#endif
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#if !defined(BOOST_ATOMIC_DETAIL_NO_LOCK_FREE_TYPEDEFS)
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using atomics::atomic_unsigned_lock_free;
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using atomics::atomic_signed_lock_free;
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#endif
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#undef BOOST_ATOMIC_DETAIL_NO_LOCK_FREE_TYPEDEFS
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} // namespace boost
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#include <boost/atomic/detail/footer.hpp>
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#endif // BOOST_ATOMIC_ATOMIC_HPP_INCLUDED_
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