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authorTobias Markmann <tm@ayena.de>2014-10-19 20:22:58 (GMT)
committerTobias Markmann <tm@ayena.de>2014-10-20 13:49:33 (GMT)
commit6b22dfcf59474dd016a0355a3102a1dd3692d92c (patch)
tree2b1fd33be433a91e81fee84fdc2bf1b52575d934 /3rdParty/Boost/src/boost/atomic/detail/ops_windows.hpp
parent38b0cb785fea8eae5e48fae56440695fdfd10ee1 (diff)
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Update Boost in 3rdParty to version 1.56.0.
This updates Boost in our 3rdParty directory to version 1.56.0. Updated our update.sh script to stop on error. Changed error reporting in SwiftTools/CrashReporter.cpp to SWIFT_LOG due to missing include of <iostream> with newer Boost. Change-Id: I4b35c77de951333979a524097f35f5f83d325edc
Diffstat (limited to '3rdParty/Boost/src/boost/atomic/detail/ops_windows.hpp')
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+/*
+ * 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) 2009 Helge Bahmann
+ * Copyright (c) 2012 Tim Blechmann
+ * Copyright (c) 2014 Andrey Semashev
+ */
+/*!
+ * \file atomic/detail/ops_windows.hpp
+ *
+ * This header contains implementation of the \c operations template.
+ *
+ * This implementation is the most basic version for Windows. It should
+ * work for any non-MSVC-like compilers as long as there are Interlocked WinAPI
+ * functions available. This version is also used for WinCE.
+ *
+ * Notably, this implementation is not as efficient as other
+ * versions based on compiler intrinsics.
+ */
+
+#ifndef BOOST_ATOMIC_DETAIL_OPS_WINDOWS_HPP_INCLUDED_
+#define BOOST_ATOMIC_DETAIL_OPS_WINDOWS_HPP_INCLUDED_
+
+#include <boost/memory_order.hpp>
+#include <boost/type_traits/make_signed.hpp>
+#include <boost/atomic/detail/config.hpp>
+#include <boost/atomic/detail/interlocked.hpp>
+#include <boost/atomic/detail/storage_type.hpp>
+#include <boost/atomic/detail/operations_fwd.hpp>
+#include <boost/atomic/capabilities.hpp>
+#include <boost/atomic/detail/ops_msvc_common.hpp>
+#include <boost/atomic/detail/ops_extending_cas_based.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+namespace atomics {
+namespace detail {
+
+struct windows_operations_base
+{
+ static BOOST_FORCEINLINE void hardware_full_fence() BOOST_NOEXCEPT
+ {
+ long tmp;
+ BOOST_ATOMIC_INTERLOCKED_EXCHANGE(&tmp, 0);
+ }
+
+ static BOOST_FORCEINLINE void fence_before(memory_order) BOOST_NOEXCEPT
+ {
+ BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
+ }
+
+ static BOOST_FORCEINLINE void fence_after(memory_order) BOOST_NOEXCEPT
+ {
+ BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
+ }
+};
+
+template< typename T, typename Derived >
+struct windows_operations :
+ public windows_operations_base
+{
+ typedef T storage_type;
+
+ static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+ Derived::exchange(storage, v, order);
+ }
+
+ static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ return Derived::fetch_add(const_cast< storage_type volatile& >(storage), (storage_type)0, order);
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_sub(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+ typedef typename make_signed< storage_type >::type signed_storage_type;
+ return Derived::fetch_add(storage, static_cast< storage_type >(-static_cast< signed_storage_type >(v)), 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 Derived::compare_exchange_strong(storage, expected, desired, success_order, failure_order);
+ }
+
+ static BOOST_FORCEINLINE bool test_and_set(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ return !!Derived::exchange(storage, (storage_type)1, order);
+ }
+
+ static BOOST_FORCEINLINE void clear(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ store(storage, (storage_type)0, order);
+ }
+
+ static BOOST_FORCEINLINE bool is_lock_free(storage_type const volatile&) BOOST_NOEXCEPT
+ {
+ return true;
+ }
+};
+
+template< bool Signed >
+struct operations< 4u, Signed > :
+ public windows_operations< typename make_storage_type< 4u, Signed >::type, operations< 4u, Signed > >
+{
+ typedef windows_operations< typename make_storage_type< 4u, Signed >::type, operations< 4u, Signed > > base_type;
+ typedef typename base_type::storage_type storage_type;
+
+ static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+ base_type::fence_before(order);
+ v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(&storage, v));
+ base_type::fence_after(order);
+ return v;
+ }
+
+ static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+ base_type::fence_before(order);
+ v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE(&storage, v));
+ base_type::fence_after(order);
+ return v;
+ }
+
+ 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
+ {
+ storage_type previous = expected;
+ base_type::fence_before(success_order);
+ storage_type old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(&storage, desired, previous));
+ expected = old_val;
+ // The success and failure fences are the same anyway
+ base_type::fence_after(success_order);
+ return (previous == old_val);
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+#if defined(BOOST_ATOMIC_INTERLOCKED_AND)
+ base_type::fence_before(order);
+ v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND(&storage, v));
+ base_type::fence_after(order);
+ return v;
+#else
+ storage_type res = storage;
+ while (!compare_exchange_strong(storage, res, res & v, order, memory_order_relaxed)) {}
+ return res;
+#endif
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+#if defined(BOOST_ATOMIC_INTERLOCKED_OR)
+ base_type::fence_before(order);
+ v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR(&storage, v));
+ base_type::fence_after(order);
+ return v;
+#else
+ storage_type res = storage;
+ while (!compare_exchange_strong(storage, res, res | v, order, memory_order_relaxed)) {}
+ return res;
+#endif
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
+ {
+#if defined(BOOST_ATOMIC_INTERLOCKED_XOR)
+ base_type::fence_before(order);
+ v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR(&storage, v));
+ base_type::fence_after(order);
+ return v;
+#else
+ storage_type res = storage;
+ while (!compare_exchange_strong(storage, res, res ^ v, order, memory_order_relaxed)) {}
+ return res;
+#endif
+ }
+};
+
+template< bool Signed >
+struct operations< 1u, Signed > :
+ public extending_cas_based_operations< operations< 4u, Signed >, 1u, Signed >
+{
+};
+
+template< bool Signed >
+struct operations< 2u, Signed > :
+ public extending_cas_based_operations< operations< 4u, Signed >, 2u, Signed >
+{
+};
+
+BOOST_FORCEINLINE void thread_fence(memory_order order) BOOST_NOEXCEPT
+{
+ BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
+ if (order == memory_order_seq_cst)
+ windows_operations_base::hardware_full_fence();
+ BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
+}
+
+BOOST_FORCEINLINE void signal_fence(memory_order order) BOOST_NOEXCEPT
+{
+ if (order != memory_order_relaxed)
+ BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
+}
+
+} // namespace detail
+} // namespace atomics
+} // namespace boost
+
+#endif // BOOST_ATOMIC_DETAIL_OPS_WINDOWS_HPP_INCLUDED_