liuxiaolong
2021-07-20 58d904a328c0d849769b483e901a0be9426b8209
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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/lock_options.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