63 lines
1.1 KiB
C++
63 lines
1.1 KiB
C++
#ifndef BOOST_SMART_PTR_DETAIL_LWM_STD_MUTEX_HPP_INCLUDED
|
|
#define BOOST_SMART_PTR_DETAIL_LWM_STD_MUTEX_HPP_INCLUDED
|
|
|
|
// Copyright 2020 Peter Dimov
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// https://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
#include <boost/assert.hpp>
|
|
#include <mutex>
|
|
|
|
namespace boost
|
|
{
|
|
|
|
namespace detail
|
|
{
|
|
|
|
class lightweight_mutex
|
|
{
|
|
private:
|
|
|
|
std::mutex m_;
|
|
|
|
lightweight_mutex(lightweight_mutex const &);
|
|
lightweight_mutex & operator=(lightweight_mutex const &);
|
|
|
|
public:
|
|
|
|
lightweight_mutex()
|
|
{
|
|
}
|
|
|
|
class scoped_lock;
|
|
friend class scoped_lock;
|
|
|
|
class scoped_lock
|
|
{
|
|
private:
|
|
|
|
std::mutex & m_;
|
|
|
|
scoped_lock(scoped_lock const &);
|
|
scoped_lock & operator=(scoped_lock const &);
|
|
|
|
public:
|
|
|
|
scoped_lock( lightweight_mutex & m ): m_( m.m_ )
|
|
{
|
|
m_.lock();
|
|
}
|
|
|
|
~scoped_lock()
|
|
{
|
|
m_.unlock();
|
|
}
|
|
};
|
|
};
|
|
|
|
} // namespace detail
|
|
|
|
} // namespace boost
|
|
|
|
#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_STD_MUTEX_HPP_INCLUDED
|