1 #ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED 2 #define BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED 3 4 // MS compatible compilers support #pragma once 5 6 #if defined(_MSC_VER) && (_MSC_VER >= 1020) 7 # pragma once 8 #endif 9 10 // 11 // boost/detail/lwm_win32_cs.hpp 12 // 13 // Copyright (c) 2002, 2003 Peter Dimov 14 // Copyright (c) Microsoft Corporation 2014 15 // 16 // Distributed under the Boost Software License, Version 1.0. (See 17 // accompanying file LICENSE_1_0.txt or copy at 18 // http://www.boost.org/LICENSE_1_0.txt) 19 // 20 21 #include <boost/predef.h> 22 23 #ifdef BOOST_USE_WINDOWS_H 24 # include <windows.h> 25 #endif 26 27 namespace pdalboost 28 { 29 30 namespace detail 31 { 32 33 #ifndef BOOST_USE_WINDOWS_H 34 35 struct critical_section 36 { 37 struct critical_section_debug * DebugInfo; 38 long LockCount; 39 long RecursionCount; 40 void * OwningThread; 41 void * LockSemaphore; 42 #if defined(_WIN64) 43 unsigned __int64 SpinCount; 44 #else 45 unsigned long SpinCount; 46 #endif 47 }; 48 49 #if BOOST_PLAT_WINDOWS_RUNTIME 50 extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSectionEx(critical_section *, unsigned long, unsigned long); 51 #else 52 extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSection(critical_section *); 53 #endif 54 extern "C" __declspec(dllimport) void __stdcall EnterCriticalSection(critical_section *); 55 extern "C" __declspec(dllimport) void __stdcall LeaveCriticalSection(critical_section *); 56 extern "C" __declspec(dllimport) void __stdcall DeleteCriticalSection(critical_section *); 57 58 #else 59 60 typedef ::CRITICAL_SECTION critical_section; 61 62 #endif // #ifndef BOOST_USE_WINDOWS_H 63 64 class lightweight_mutex 65 { 66 private: 67 68 critical_section cs_; 69 70 lightweight_mutex(lightweight_mutex const &); 71 lightweight_mutex & operator=(lightweight_mutex const &); 72 73 public: 74 lightweight_mutex()75 lightweight_mutex() 76 { 77 #if BOOST_PLAT_WINDOWS_RUNTIME 78 InitializeCriticalSectionEx(&cs_, 4000, 0); 79 #else 80 InitializeCriticalSection(&cs_); 81 #endif 82 } 83 ~lightweight_mutex()84 ~lightweight_mutex() 85 { 86 DeleteCriticalSection(&cs_); 87 } 88 89 class scoped_lock; 90 friend class scoped_lock; 91 92 class scoped_lock 93 { 94 private: 95 96 lightweight_mutex & m_; 97 98 scoped_lock(scoped_lock const &); 99 scoped_lock & operator=(scoped_lock const &); 100 101 public: 102 scoped_lock(lightweight_mutex & m)103 explicit scoped_lock(lightweight_mutex & m): m_(m) 104 { 105 EnterCriticalSection(&m_.cs_); 106 } 107 ~scoped_lock()108 ~scoped_lock() 109 { 110 LeaveCriticalSection(&m_.cs_); 111 } 112 }; 113 }; 114 115 } // namespace detail 116 117 } // namespace pdalboost 118 119 #endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED 120