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- #ifndef BOOST_ATOMIC_DETAIL_OPS_GCC_PPC_COMMON_HPP_INCLUDED_
- #define BOOST_ATOMIC_DETAIL_OPS_GCC_PPC_COMMON_HPP_INCLUDED_
- #include <boost/memory_order.hpp>
- #include <boost/atomic/detail/config.hpp>
- #include <boost/atomic/detail/header.hpp>
- #ifdef BOOST_HAS_PRAGMA_ONCE
- #pragma once
- #endif
- namespace boost {
- namespace atomics {
- namespace detail {
- struct core_arch_operations_gcc_ppc_base
- {
- static BOOST_CONSTEXPR_OR_CONST bool full_cas_based = false;
- static BOOST_CONSTEXPR_OR_CONST bool is_always_lock_free = true;
- static BOOST_FORCEINLINE void fence_before(memory_order order) BOOST_NOEXCEPT
- {
- #if defined(__powerpc64__) || defined(__PPC64__)
- if (order == memory_order_seq_cst)
- __asm__ __volatile__ ("sync" ::: "memory");
- else if ((static_cast< unsigned int >(order) & static_cast< unsigned int >(memory_order_release)) != 0u)
- __asm__ __volatile__ ("lwsync" ::: "memory");
- #else
- if ((static_cast< unsigned int >(order) & static_cast< unsigned int >(memory_order_release)) != 0u)
- __asm__ __volatile__ ("sync" ::: "memory");
- #endif
- }
- static BOOST_FORCEINLINE void fence_after(memory_order order) BOOST_NOEXCEPT
- {
- if ((static_cast< unsigned int >(order) & (static_cast< unsigned int >(memory_order_consume) | static_cast< unsigned int >(memory_order_acquire))) != 0u)
- __asm__ __volatile__ ("isync" ::: "memory");
- }
- };
- }
- }
- }
- #include <boost/atomic/detail/footer.hpp>
- #endif
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