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#ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
#define BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
//
// boost/detail/lwm_win32_cs.hpp
//
// Copyright (c) 2002, 2003 Peter Dimov
//
// 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)
//
#ifdef BOOST_USE_WINDOWS_H
# include <windows.h>
#endif
namespace boost
{
namespace detail
{
#ifndef BOOST_USE_WINDOWS_H
struct critical_section
{
struct critical_section_debug * DebugInfo;
long LockCount;
long RecursionCount;
void * OwningThread;
void * LockSemaphore;
#if defined(_WIN64)
unsigned __int64 SpinCount;
#else
unsigned long SpinCount;
#endif
};
extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSection(critical_section *);
extern "C" __declspec(dllimport) void __stdcall EnterCriticalSection(critical_section *);
extern "C" __declspec(dllimport) void __stdcall LeaveCriticalSection(critical_section *);
extern "C" __declspec(dllimport) void __stdcall DeleteCriticalSection(critical_section *);
#else
typedef ::CRITICAL_SECTION critical_section;
#endif // #ifndef BOOST_USE_WINDOWS_H
class lightweight_mutex
{
private:
critical_section cs_;
lightweight_mutex(lightweight_mutex const &);
lightweight_mutex & operator=(lightweight_mutex const &);
public:
lightweight_mutex()
{
InitializeCriticalSection(&cs_);
}
~lightweight_mutex()
{
DeleteCriticalSection(&cs_);
}
class scoped_lock;
friend class scoped_lock;
class scoped_lock
{
private:
lightweight_mutex & m_;
scoped_lock(scoped_lock const &);
scoped_lock & operator=(scoped_lock const &);
public:
explicit scoped_lock(lightweight_mutex & m): m_(m)
{
EnterCriticalSection(&m_.cs_);
}
~scoped_lock()
{
LeaveCriticalSection(&m_.cs_);
}
};
};
} // namespace detail
} // namespace boost
#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
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