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Diffstat (limited to 'src/third_party/boost-1.56.0/boost/atomic/detail/ops_gcc_atomic.hpp')
| -rw-r--r-- | src/third_party/boost-1.56.0/boost/atomic/detail/ops_gcc_atomic.hpp | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/src/third_party/boost-1.56.0/boost/atomic/detail/ops_gcc_atomic.hpp b/src/third_party/boost-1.56.0/boost/atomic/detail/ops_gcc_atomic.hpp deleted file mode 100644 index 22977910c3c..00000000000 --- a/src/third_party/boost-1.56.0/boost/atomic/detail/ops_gcc_atomic.hpp +++ /dev/null @@ -1,238 +0,0 @@ -/* - * 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) 2014 Andrey Semashev - */ -/*! - * \file atomic/detail/ops_gcc_atomic.hpp - * - * This header contains implementation of the \c operations template. - */ - -#ifndef BOOST_ATOMIC_DETAIL_OPS_GCC_ATOMIC_HPP_INCLUDED_ -#define BOOST_ATOMIC_DETAIL_OPS_GCC_ATOMIC_HPP_INCLUDED_ - -#include <boost/memory_order.hpp> -#include <boost/atomic/detail/config.hpp> -#include <boost/atomic/detail/storage_type.hpp> -#include <boost/atomic/detail/operations_fwd.hpp> -#include <boost/atomic/capabilities.hpp> -#if defined(__clang__) && (defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B) || defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B)) -#include <boost/atomic/detail/ops_gcc_x86_dcas.hpp> -#include <boost/atomic/detail/ops_cas_based.hpp> -#endif - -#ifdef BOOST_HAS_PRAGMA_ONCE -#pragma once -#endif - -#if defined(__INTEL_COMPILER) -// This is used to suppress warning #32013 described below for Intel Compiler. -// In debug builds the compiler does not inline any functions, so basically -// every atomic function call results in this warning. I don't know any other -// way to selectively disable just this one warning. -#pragma system_header -#endif - -namespace boost { -namespace atomics { -namespace detail { - -/*! - * The function converts \c boost::memory_order values to the compiler-specific constants. - * - * NOTE: The intention is that the function is optimized away by the compiler, and the - * compiler-specific constants are passed to the intrinsics. I know constexpr doesn't - * work in this case because the standard atomics interface require memory ordering - * constants to be passed as function arguments, at which point they stop being constexpr. - * However it is crucial that the compiler sees constants and not runtime values, - * because otherwise it just ignores the ordering value and always uses seq_cst. - * This is the case with Intel C++ Compiler 14.0.3 (Composer XE 2013 SP1, update 3) and - * gcc 4.8.2. Intel Compiler issues a warning in this case: - * - * warning #32013: Invalid memory order specified. Defaulting to seq_cst memory order. - * - * while gcc acts silently. - * - * To mitigate the problem ALL functions, including the atomic<> members must be - * declared with BOOST_FORCEINLINE. In this case the compilers are able to see that - * all functions are called with constant orderings and call intrinstcts properly. - * - * Unfortunately, this still doesn't work in debug mode as the compiler doesn't - * inline functions even when marked with BOOST_FORCEINLINE. In this case all atomic - * operaions will be executed with seq_cst semantics. - */ -BOOST_FORCEINLINE BOOST_CONSTEXPR int convert_memory_order_to_gcc(memory_order order) BOOST_NOEXCEPT -{ - return (order == memory_order_relaxed ? __ATOMIC_RELAXED : (order == memory_order_consume ? __ATOMIC_CONSUME : - (order == memory_order_acquire ? __ATOMIC_ACQUIRE : (order == memory_order_release ? __ATOMIC_RELEASE : - (order == memory_order_acq_rel ? __ATOMIC_ACQ_REL : __ATOMIC_SEQ_CST))))); -} - -template< typename T > -struct gcc_atomic_operations -{ - typedef T storage_type; - - static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - __atomic_store_n(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order order) BOOST_NOEXCEPT - { - return __atomic_load_n(&storage, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - return __atomic_fetch_add(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE storage_type fetch_sub(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - return __atomic_fetch_sub(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - return __atomic_exchange_n(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE bool compare_exchange_strong( - storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT - { - return __atomic_compare_exchange_n - ( - &storage, &expected, desired, false, - atomics::detail::convert_memory_order_to_gcc(success_order), - atomics::detail::convert_memory_order_to_gcc(failure_order) - ); - } - - static BOOST_FORCEINLINE bool compare_exchange_weak( - storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT - { - return __atomic_compare_exchange_n - ( - &storage, &expected, desired, true, - atomics::detail::convert_memory_order_to_gcc(success_order), - atomics::detail::convert_memory_order_to_gcc(failure_order) - ); - } - - static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - return __atomic_fetch_and(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - return __atomic_fetch_or(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT - { - return __atomic_fetch_xor(&storage, v, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE bool test_and_set(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT - { - return __atomic_test_and_set(&storage, atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE void clear(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT - { - __atomic_clear(const_cast< storage_type* >(&storage), atomics::detail::convert_memory_order_to_gcc(order)); - } - - static BOOST_FORCEINLINE bool is_lock_free(storage_type const volatile& storage) BOOST_NOEXCEPT - { - return __atomic_is_lock_free(sizeof(storage_type), &storage); - } -}; - -#if BOOST_ATOMIC_INT8_LOCK_FREE > 0 -template< bool Signed > -struct operations< 1u, Signed > : - public gcc_atomic_operations< typename make_storage_type< 1u, Signed >::type > -{ -}; -#endif - -#if BOOST_ATOMIC_INT16_LOCK_FREE > 0 -template< bool Signed > -struct operations< 2u, Signed > : - public gcc_atomic_operations< typename make_storage_type< 2u, Signed >::type > -{ -}; -#endif - -#if BOOST_ATOMIC_INT32_LOCK_FREE > 0 -template< bool Signed > -struct operations< 4u, Signed > : - public gcc_atomic_operations< typename make_storage_type< 4u, Signed >::type > -{ -}; -#endif - -#if BOOST_ATOMIC_INT64_LOCK_FREE > 0 -#if defined(__clang__) && defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B) - -// Workaround for clang bug http://llvm.org/bugs/show_bug.cgi?id=19355 -template< bool Signed > -struct operations< 8u, Signed > : - public cas_based_operations< gcc_dcas_x86< Signed > > -{ -}; - -#else - -template< bool Signed > -struct operations< 8u, Signed > : - public gcc_atomic_operations< typename make_storage_type< 8u, Signed >::type > -{ -}; - -#endif -#endif - -#if BOOST_ATOMIC_INT128_LOCK_FREE > 0 -#if defined(__clang__) && defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B) - -// Workaround for clang bug: http://llvm.org/bugs/show_bug.cgi?id=19149 -// Clang 3.4 does not implement 128-bit __atomic* intrinsics even though it defines __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 -template< bool Signed > -struct operations< 16u, Signed > : - public cas_based_operations< gcc_dcas_x86_64< Signed > > -{ -}; - -#else - -template< bool Signed > -struct operations< 16u, Signed > : - public gcc_atomic_operations< typename make_storage_type< 16u, Signed >::type > -{ -}; - -#endif -#endif - -BOOST_FORCEINLINE void thread_fence(memory_order order) BOOST_NOEXCEPT -{ - __atomic_thread_fence(atomics::detail::convert_memory_order_to_gcc(order)); -} - -BOOST_FORCEINLINE void signal_fence(memory_order order) BOOST_NOEXCEPT -{ - __atomic_signal_fence(atomics::detail::convert_memory_order_to_gcc(order)); -} - -} // namespace detail -} // namespace atomics -} // namespace boost - -#endif // BOOST_ATOMIC_DETAIL_OPS_GCC_ATOMIC_HPP_INCLUDED_ |