Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+#ifndef BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP
+#define BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP
+
+//  interlocked_read_win32.hpp
+//
+//  (C) Copyright 2005-8 Anthony Williams
+//  (C) Copyright 2012 Vicente J. Botet Escriba
+//
+//  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)
+
+#include <boost/detail/interlocked.hpp>
+#include <boost/thread/detail/config.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+#ifdef BOOST_MSVC
+
+namespace boost
+{
+    namespace detail
+    {
+        // Since VS2005 volatile reads always acquire
+        inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT
+        {
+            long const res=*x;
+            return res;
+        }
+        inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT
+        {
+            void* const res=*x;
+            return res;
+        }
+
+        // Since VS2005 volatile writes always release
+        inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT
+        {
+            *x=value;
+        }
+        inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT
+        {
+            *x=value;
+        }
+    }
+}
+
+#else
+
+namespace boost
+{
+    namespace detail
+    {
+        inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT
+        {
+            return BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,0,0);
+        }
+        inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT
+        {
+            return BOOST_INTERLOCKED_COMPARE_EXCHANGE_POINTER(x,0,0);
+        }
+        inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT
+        {
+            BOOST_INTERLOCKED_EXCHANGE(x,value);
+        }
+        inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT
+        {
+            BOOST_INTERLOCKED_EXCHANGE_POINTER(x,value);
+        }
+    }
+}
+
+#endif
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif