externals: Update boost to 1.72 and add Boost Context

boost/thread/win32/mutex.hpp

@@ -0,0 +1,72 @@
+#ifndef BOOST_THREAD_WIN32_MUTEX_HPP
+#define BOOST_THREAD_WIN32_MUTEX_HPP
+// (C) Copyright 2005-7 Anthony Williams
+// (C) Copyright 2011-2012 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/thread/win32/basic_timed_mutex.hpp>
+#include <boost/thread/exceptions.hpp>
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+#include <boost/thread/lock_types.hpp>
+#endif
+#include <boost/thread/detail/delete.hpp>
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    namespace detail
+    {
+        typedef ::boost::detail::basic_timed_mutex underlying_mutex;
+    }
+
+    class mutex:
+        public ::boost::detail::underlying_mutex
+    {
+    public:
+        BOOST_THREAD_NO_COPYABLE(mutex)
+        mutex()
+        {
+            initialize();
+        }
+        ~mutex()
+        {
+            destroy();
+        }
+
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+        typedef unique_lock<mutex> scoped_lock;
+        typedef detail::try_lock_wrapper<mutex> scoped_try_lock;
+#endif
+    };
+
+    typedef mutex try_mutex;
+
+    class timed_mutex:
+        public ::boost::detail::basic_timed_mutex
+    {
+    public:
+        BOOST_THREAD_NO_COPYABLE(timed_mutex)
+        timed_mutex()
+        {
+            initialize();
+        }
+
+        ~timed_mutex()
+        {
+            destroy();
+        }
+
+#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
+        typedef unique_lock<timed_mutex> scoped_timed_lock;
+        typedef detail::try_lock_wrapper<timed_mutex> scoped_try_lock;
+        typedef scoped_timed_lock scoped_lock;
+#endif
+    };
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif