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Viewing changes to libs/boost-lib/boost/detail/lwm_win32_cs.hpp

  • Committer: Bazaar Package Importer
  • Author(s): Alessio Treglia
  • Date: 2010-11-04 11:46:25 UTC
  • mto: This revision was merged to the branch mainline in revision 8.
  • Revision ID: james.westby@ubuntu.com-20101104114625-8xfdhvhpsm51i0nu
Tags: upstream-0.8.0
Import upstream version 0.8.0

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libs/boost-lib/boost/detail/lwm_win32_cs.hpp
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#ifndef BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
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#define BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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//  boost/detail/lwm_win32_cs.hpp
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//
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//  Copyright (c) 2002, 2003 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifdef BOOST_USE_WINDOWS_H
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#  include <windows.h>
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#endif
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namespace boost
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{
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namespace detail
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{
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#ifndef BOOST_USE_WINDOWS_H
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struct CRITICAL_SECTION
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{
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    struct critical_section_debug * DebugInfo;
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    long LockCount;
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    long RecursionCount;
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    void * OwningThread;
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    void * LockSemaphore;
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#if defined(_WIN64)
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    unsigned __int64 SpinCount;
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#else
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    unsigned long SpinCount;
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#endif
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};
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extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSection(CRITICAL_SECTION *);
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extern "C" __declspec(dllimport) void __stdcall EnterCriticalSection(CRITICAL_SECTION *);
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extern "C" __declspec(dllimport) void __stdcall LeaveCriticalSection(CRITICAL_SECTION *);
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extern "C" __declspec(dllimport) void __stdcall DeleteCriticalSection(CRITICAL_SECTION *);
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#endif // #ifndef BOOST_USE_WINDOWS_H
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class lightweight_mutex
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{
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private:
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    CRITICAL_SECTION cs_;
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    lightweight_mutex(lightweight_mutex const &);
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    lightweight_mutex & operator=(lightweight_mutex const &);
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public:
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    lightweight_mutex()
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    {
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        InitializeCriticalSection(&cs_);
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    }
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    ~lightweight_mutex()
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    {
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        DeleteCriticalSection(&cs_);
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    }
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    class scoped_lock;
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    friend class scoped_lock;
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    class scoped_lock
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    {
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    private:
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        lightweight_mutex & m_;
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        scoped_lock(scoped_lock const &);
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        scoped_lock & operator=(scoped_lock const &);
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    public:
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        explicit scoped_lock(lightweight_mutex & m): m_(m)
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        {
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            EnterCriticalSection(&m_.cs_);
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        }
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        ~scoped_lock()
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        {
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            LeaveCriticalSection(&m_.cs_);
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        }
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    };
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};
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} // namespace detail
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} // namespace boost
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#endif // #ifndef BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED