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76e25f36a3
The generic implementation is based on the lock pool. A list of condition variables (or waiting futexes) is added per lock. Basically, the lock pool serves as a global hash table, where each lock represents a bucket and each wait state is an element. Every wait operation allocates a wait state keyed on the pointer to the atomic object. Notify operations look up the wait state by the atomic pointer and notify the condition variable/futex. The corresponding lock needs to be acquired to protect the wait state list during all wait/notify operations. Backends not involving the lock pool are going to be added later. The implementation of wait operation extends the C++20 definition in that it returns the newly loaded value instead of void. This allows the caller to avoid loading the value himself. The waiting/notifying operations are not address-free. Address-free variants will be added later. Added tests for the new operations and refactored existing tests for atomic operations. Added docs for the new operations.
75 lines
3.1 KiB
C++
75 lines
3.1 KiB
C++
// 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/atomic_ref.hpp>
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#include <boost/config.hpp>
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#include <boost/cstdint.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_integral_api< atomic_ref_wrapper, char >();
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test_integral_api< atomic_ref_wrapper, signed char >();
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test_integral_api< atomic_ref_wrapper, unsigned char >();
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test_integral_api< atomic_ref_wrapper, boost::uint8_t >();
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test_integral_api< atomic_ref_wrapper, boost::int8_t >();
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test_integral_api< atomic_ref_wrapper, short >();
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test_integral_api< atomic_ref_wrapper, unsigned short >();
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test_integral_api< atomic_ref_wrapper, boost::uint16_t >();
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test_integral_api< atomic_ref_wrapper, boost::int16_t >();
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test_integral_api< atomic_ref_wrapper, int >();
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test_integral_api< atomic_ref_wrapper, unsigned int >();
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test_integral_api< atomic_ref_wrapper, boost::uint32_t >();
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test_integral_api< atomic_ref_wrapper, boost::int32_t >();
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test_integral_api< atomic_ref_wrapper, long >();
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test_integral_api< atomic_ref_wrapper, unsigned long >();
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test_integral_api< atomic_ref_wrapper, boost::uint64_t >();
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test_integral_api< atomic_ref_wrapper, boost::int64_t >();
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test_integral_api< atomic_ref_wrapper, long long >();
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test_integral_api< atomic_ref_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_ref_wrapper, boost::int128_type >();
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test_integral_api< atomic_ref_wrapper, boost::uint128_type >();
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#endif
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#if !defined(BOOST_ATOMIC_NO_FLOATING_POINT)
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test_floating_point_api< atomic_ref_wrapper, float >();
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test_floating_point_api< atomic_ref_wrapper, double >();
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test_floating_point_api< atomic_ref_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_ref_wrapper, boost::float128_type >();
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#endif
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#endif
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test_pointer_api< atomic_ref_wrapper, int >();
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test_enum_api< atomic_ref_wrapper >();
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test_struct_api< atomic_ref_wrapper, test_struct< boost::uint8_t > >();
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test_struct_api< atomic_ref_wrapper, test_struct< boost::uint16_t > >();
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test_struct_api< atomic_ref_wrapper, test_struct< boost::uint32_t > >();
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test_struct_api< atomic_ref_wrapper, test_struct< boost::uint64_t > >();
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#if defined(BOOST_HAS_INT128)
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test_struct_api< atomic_ref_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_ref_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_ref_wrapper, test_struct< double > >();
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test_large_struct_api< atomic_ref_wrapper >();
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// Test that boost::atomic_ref<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_ref_wrapper >();
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return boost::report_errors();
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}
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