comparison DEPENDENCIES/generic/include/boost/atomic/detail/ops_emulated.hpp @ 102:f46d142149f5

Whoops, finish that update

+/*
+ * 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_emulated.hpp
+ *
+ * This header contains lockpool-based implementation of the \c operations template.
+ */
+
+#ifndef BOOST_ATOMIC_DETAIL_OPS_EMULATED_HPP_INCLUDED_
+#define BOOST_ATOMIC_DETAIL_OPS_EMULATED_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/detail/lockpool.hpp>
+#include <boost/atomic/capabilities.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+namespace atomics {
+namespace detail {
+
+template< typename T >
+struct emulated_operations
+{
+    typedef T storage_type;
+
+    static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        lockpool::scoped_lock lock(&storage);
+        const_cast< storage_type& >(storage) = v;
+    }
+
+    static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order) BOOST_NOEXCEPT
+    {
+        lockpool::scoped_lock lock(&storage);
+        return const_cast< storage_type const& >(storage);
+    }
+
+    static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        s += v;
+        return old_val;
+    }
+
+    static BOOST_FORCEINLINE storage_type fetch_sub(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        s -= v;
+        return old_val;
+    }
+
+    static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        s = v;
+        return old_val;
+    }
+
+    static BOOST_FORCEINLINE bool compare_exchange_strong(
+        storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        const bool res = old_val == expected;
+        if (res)
+            s = desired;
+        expected = old_val;
+
+        return res;
+    }
+
+    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 compare_exchange_strong(storage, expected, desired, success_order, failure_order);
+    }
+
+    static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        s &= v;
+        return old_val;
+    }
+
+    static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        s |= v;
+        return old_val;
+    }
+
+    static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order) BOOST_NOEXCEPT
+    {
+        storage_type& s = const_cast< storage_type& >(storage);
+        lockpool::scoped_lock lock(&storage);
+        storage_type old_val = s;
+        s ^= v;
+        return old_val;
+    }
+
+    static BOOST_FORCEINLINE bool test_and_set(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+    {
+        return !!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 false;
+    }
+};
+
+template< unsigned int Size, bool Signed >
+struct operations :
+    public emulated_operations< typename make_storage_type< Size, Signed >::type >
+{
+};
+
+} // namespace detail
+} // namespace atomics
+} // namespace boost
+
+#endif // BOOST_ATOMIC_DETAIL_OPS_EMULATED_HPP_INCLUDED_