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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)
+// (C) Copyright 2012 Vicente J. Botet Escriba
+
+#ifndef BOOST_THREAD_SHARED_LOCK_GUARD_HPP
+#define BOOST_THREAD_SHARED_LOCK_GUARD_HPP
+#include <boost/thread/detail/config.hpp>
+#include <boost/thread/locks.hpp>
+#include <boost/thread/detail/delete.hpp>
+
+namespace boost
+{
+
+ template<typename SharedMutex>
+ class shared_lock_guard
+ {
+ private:
+ SharedMutex& m;
+
+ public:
+ typedef SharedMutex mutex_type;
+ BOOST_THREAD_NO_COPYABLE(shared_lock_guard)
+ explicit shared_lock_guard(SharedMutex& m_):
+ m(m_)
+ {
+ m.lock_shared();
+ }
+ shared_lock_guard(SharedMutex& m_,adopt_lock_t):
+ m(m_)
+ {}
+ ~shared_lock_guard()
+ {
+ m.unlock_shared();
+ }
+ };
+
+#ifdef BOOST_THREAD_NO_AUTO_DETECT_MUTEX_TYPES
+
+ template<typename T>
+ struct is_mutex_type<shared_lock_guard<T> >
+ {
+ BOOST_STATIC_CONSTANT(bool, value = true);
+ };
+
+
+#endif
+
+
+}
+
+#endif // header