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746ea2649b
Use __builtin_clear_padding and __builtin_zero_non_value_bits that were introduced in gcc 11 and MSVC 19.27 to clear the padding bits in atomic types. The intrinsics are used in bitwise_cast and atomic reference constructors. Also, separated atomic impl specializations for enums to allow using static_cast to convert values to storage. This in turn allows to relax compiler requirements to mark atomic constructors constexpr. Updated docs and added tests for structs with padding and constexpr atomic constructors.
96 lines
3.7 KiB
C++
96 lines
3.7 KiB
C++
// Copyright (c) 2011 Helge Bahmann
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// Copyright (c) 2020 Andrey Semashev
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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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#include <boost/atomic.hpp>
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#include <boost/config.hpp>
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#include <boost/cstdint.hpp>
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#include "atomic_wrapper.hpp"
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#include "api_test_helpers.hpp"
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int main(int, char *[])
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{
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test_flag_api< boost::atomic_flag >();
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test_integral_api< atomic_wrapper, char >();
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test_integral_api< atomic_wrapper, signed char >();
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test_integral_api< atomic_wrapper, unsigned char >();
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test_integral_api< atomic_wrapper, boost::uint8_t >();
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test_integral_api< atomic_wrapper, boost::int8_t >();
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test_integral_api< atomic_wrapper, short >();
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test_integral_api< atomic_wrapper, unsigned short >();
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test_integral_api< atomic_wrapper, boost::uint16_t >();
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test_integral_api< atomic_wrapper, boost::int16_t >();
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test_integral_api< atomic_wrapper, int >();
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test_integral_api< atomic_wrapper, unsigned int >();
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test_integral_api< atomic_wrapper, boost::uint32_t >();
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test_integral_api< atomic_wrapper, boost::int32_t >();
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test_integral_api< atomic_wrapper, long >();
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test_integral_api< atomic_wrapper, unsigned long >();
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test_integral_api< atomic_wrapper, boost::uint64_t >();
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test_integral_api< atomic_wrapper, boost::int64_t >();
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test_integral_api< atomic_wrapper, long long >();
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test_integral_api< atomic_wrapper, unsigned long long >();
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#if defined(BOOST_HAS_INT128) && !defined(BOOST_ATOMIC_TESTS_NO_INT128)
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test_integral_api< atomic_wrapper, boost::int128_type >();
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test_integral_api< atomic_wrapper, boost::uint128_type >();
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#endif
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test_constexpr_ctor< char >();
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test_constexpr_ctor< short >();
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test_constexpr_ctor< int >();
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test_constexpr_ctor< long >();
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test_constexpr_ctor< test_enum >();
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// For pointers and structs we're not offering a constexpr constructor because of bitwise_cast
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// test_constexpr_ctor< int* >();
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// test_constexpr_ctor< test_struct< int > >();
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#if !defined(BOOST_ATOMIC_NO_FLOATING_POINT)
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test_floating_point_api< atomic_wrapper, float >();
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test_floating_point_api< atomic_wrapper, double >();
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test_floating_point_api< atomic_wrapper, long double >();
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#if defined(BOOST_HAS_FLOAT128) && !defined(BOOST_ATOMIC_TESTS_NO_FLOAT128)
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test_floating_point_api< atomic_wrapper, boost::float128_type >();
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#endif
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#endif
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test_pointer_api< atomic_wrapper, int >();
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test_enum_api< atomic_wrapper >();
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test_struct_api< atomic_wrapper, test_struct< boost::uint8_t > >();
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test_struct_api< atomic_wrapper, test_struct< boost::uint16_t > >();
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test_struct_api< atomic_wrapper, test_struct< boost::uint32_t > >();
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test_struct_api< atomic_wrapper, test_struct< boost::uint64_t > >();
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#if defined(BOOST_HAS_INT128)
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test_struct_api< atomic_wrapper, test_struct< boost::uint128_type > >();
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#endif
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// https://svn.boost.org/trac/boost/ticket/10994
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test_struct_x2_api< atomic_wrapper, test_struct_x2< boost::uint64_t > >();
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// https://svn.boost.org/trac/boost/ticket/9985
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test_struct_api< atomic_wrapper, test_struct< double > >();
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test_large_struct_api< atomic_wrapper >();
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// Test that boost::atomic<T> only requires T to be trivially copyable.
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// Other non-trivial constructors are allowed.
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test_struct_with_ctor_api< atomic_wrapper >();
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#if !defined(BOOST_ATOMIC_NO_CLEAR_PADDING)
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test_struct_with_padding_api< atomic_wrapper >();
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#endif
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// Test that fences at least compile
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boost::atomic_thread_fence(boost::memory_order_seq_cst);
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boost::atomic_signal_fence(boost::memory_order_seq_cst);
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return boost::report_errors();
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}
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