| /* |
| * Distributed under the Boost Software License, Version 1.0. |
| * (See accompanying file LICENSE_1_0.txt or copy at |
| * http://www.boost.org/LICENSE_1_0.txt) |
| * |
| * Copyright (c) 2017 Andrey Semashev |
| */ |
| /*! |
| * \file atomic/detail/extra_ops_msvc_arm.hpp |
| * |
| * This header contains implementation of the extra atomic operations for ARM. |
| */ |
| |
| #ifndef BOOST_ATOMIC_DETAIL_EXTRA_OPS_MSVC_ARM_HPP_INCLUDED_ |
| #define BOOST_ATOMIC_DETAIL_EXTRA_OPS_MSVC_ARM_HPP_INCLUDED_ |
| |
| #include <cstddef> |
| #include <boost/memory_order.hpp> |
| #include <boost/atomic/detail/config.hpp> |
| #include <boost/atomic/detail/interlocked.hpp> |
| #include <boost/atomic/detail/storage_traits.hpp> |
| #include <boost/atomic/detail/extra_operations_fwd.hpp> |
| #include <boost/atomic/detail/extra_ops_generic.hpp> |
| #include <boost/atomic/detail/header.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| namespace boost { |
| namespace atomics { |
| namespace detail { |
| |
| #if defined(BOOST_ATOMIC_INTERLOCKED_BTS) && defined(BOOST_ATOMIC_INTERLOCKED_BTR) |
| |
| template< typename Base, std::size_t Size, bool Signed > |
| struct extra_operations< Base, 4u, Signed, true > : |
| public extra_operations_generic< Base, 4u, Signed > |
| { |
| typedef extra_operations_generic< Base, 4u, Signed > base_type; |
| typedef typename base_type::storage_type storage_type; |
| |
| static BOOST_FORCEINLINE bool bit_test_and_set(storage_type volatile& storage, unsigned int bit_number, memory_order order) BOOST_NOEXCEPT |
| { |
| #if defined(BOOST_ATOMIC_INTERLOCKED_BTS_RELAXED) && defined(BOOST_ATOMIC_INTERLOCKED_BTS_ACQUIRE) && defined(BOOST_ATOMIC_INTERLOCKED_BTS_RELEASE) |
| bool result; |
| switch (order) |
| { |
| case memory_order_relaxed: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTS_RELAXED(&storage, bit_number); |
| break; |
| case memory_order_consume: |
| case memory_order_acquire: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTS_ACQUIRE(&storage, bit_number); |
| break; |
| case memory_order_release: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTS_RELEASE(&storage, bit_number); |
| break; |
| case memory_order_acq_rel: |
| case memory_order_seq_cst: |
| default: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTS(&storage, bit_number); |
| break; |
| } |
| return result; |
| #else |
| return !!BOOST_ATOMIC_INTERLOCKED_BTS(&storage, bit_number); |
| #endif |
| } |
| |
| static BOOST_FORCEINLINE bool bit_test_and_reset(storage_type volatile& storage, unsigned int bit_number, memory_order order) BOOST_NOEXCEPT |
| { |
| #if defined(BOOST_ATOMIC_INTERLOCKED_BTR_RELAXED) && defined(BOOST_ATOMIC_INTERLOCKED_BTR_ACQUIRE) && defined(BOOST_ATOMIC_INTERLOCKED_BTR_RELEASE) |
| bool result; |
| switch (order) |
| { |
| case memory_order_relaxed: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTR_RELAXED(&storage, bit_number); |
| break; |
| case memory_order_consume: |
| case memory_order_acquire: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTR_ACQUIRE(&storage, bit_number); |
| break; |
| case memory_order_release: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTR_RELEASE(&storage, bit_number); |
| break; |
| case memory_order_acq_rel: |
| case memory_order_seq_cst: |
| default: |
| result = !!BOOST_ATOMIC_INTERLOCKED_BTR(&storage, bit_number); |
| break; |
| } |
| return result; |
| #else |
| return !!BOOST_ATOMIC_INTERLOCKED_BTR(&storage, bit_number); |
| #endif |
| } |
| }; |
| |
| #endif // defined(BOOST_ATOMIC_INTERLOCKED_BTS) && defined(BOOST_ATOMIC_INTERLOCKED_BTR) |
| |
| } // namespace detail |
| } // namespace atomics |
| } // namespace boost |
| |
| #include <boost/atomic/detail/footer.hpp> |
| |
| #endif // BOOST_ATOMIC_DETAIL_EXTRA_OPS_MSVC_ARM_HPP_INCLUDED_ |