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139 lines
3.2 KiB
C++
139 lines
3.2 KiB
C++
#ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
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#define BOOST_SMART_PTR_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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// Copyright (c) Microsoft Corporation 2014
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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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#include <boost/predef.h>
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#ifdef BOOST_USE_WINDOWS_H
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#include <windows.h>
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#else
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struct _RTL_CRITICAL_SECTION;
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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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#if BOOST_PLAT_WINDOWS_RUNTIME
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extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSectionEx(::_RTL_CRITICAL_SECTION *, unsigned long, unsigned long);
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#else
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extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSection(::_RTL_CRITICAL_SECTION *);
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#endif
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extern "C" __declspec(dllimport) void __stdcall EnterCriticalSection(::_RTL_CRITICAL_SECTION *);
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extern "C" __declspec(dllimport) void __stdcall LeaveCriticalSection(::_RTL_CRITICAL_SECTION *);
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extern "C" __declspec(dllimport) void __stdcall DeleteCriticalSection(::_RTL_CRITICAL_SECTION *);
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typedef ::_RTL_CRITICAL_SECTION rtl_critical_section;
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#else // #ifndef BOOST_USE_WINDOWS_H
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typedef ::CRITICAL_SECTION critical_section;
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#if BOOST_PLAT_WINDOWS_RUNTIME
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using ::InitializeCriticalSectionEx;
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#else
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using ::InitializeCriticalSection;
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#endif
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using ::EnterCriticalSection;
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using ::LeaveCriticalSection;
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using ::DeleteCriticalSection;
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typedef ::CRITICAL_SECTION rtl_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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#if BOOST_PLAT_WINDOWS_RUNTIME
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boost::detail::InitializeCriticalSectionEx(reinterpret_cast< rtl_critical_section* >(&cs_), 4000, 0);
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#else
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boost::detail::InitializeCriticalSection(reinterpret_cast< rtl_critical_section* >(&cs_));
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#endif
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}
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~lightweight_mutex()
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{
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boost::detail::DeleteCriticalSection(reinterpret_cast< rtl_critical_section* >(&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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boost::detail::EnterCriticalSection(reinterpret_cast< rtl_critical_section* >(&m_.cs_));
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}
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~scoped_lock()
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{
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boost::detail::LeaveCriticalSection(reinterpret_cast< rtl_critical_section* >(&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_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
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