MSThreads.hh

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/*
 * MSThreads.hh
 *
 * Copyright 2002, LifeLine Networks BV (www.lifeline.nl). All rights reserved.
 * Copyright 2002, Bastiaan Bakker. All rights reserved.
 *
 * See the COPYING file for the terms of usage and distribution.
 */
 
#ifndef _LOG4CPP_THREADING_MSTHREADS_HH
#define _LOG4CPP_THREADING_MSTHREADS_HH
 
#include <string>
 
// deal with ERROR #define
// N.B. This #includes windows.h with NOGDI and WIN32_LEAN_AND_MEAN #defined.
//      If this is not what the user wants, #include windows.h before this file.
#ifndef _WINDOWS_
#ifndef NOGDI
#define NOGDI // this will circumvent the ERROR #define in windows.h
#define LOG4CPP_UNDEFINE_NOGDI
#endif
 
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#define LOG4CPP_UNDEFINE_WIN32_LEAN_AND_MEAN
#endif
 
#include <windows.h>
 
#ifdef LOG4CPP_UNDEFINE_NOGDI
#undef NOGDI
#endif
 
#ifdef LOG4CPP_UNDEFINE_WIN32_LEAN_AND_MEAN
#undef WIN32_LEAN_AND_MEAN
#endif
 
#endif // done dealing with ERROR #define
 
namespace log4cpp {
    namespace threading {
        std::string getThreadId();

        class LOG4CPP_EXPORT MSMutex {
          public:
            MSMutex() {
                InitializeCriticalSection(&_criticalSection);
            }
            ~MSMutex() {
                DeleteCriticalSection(&_criticalSection);
            }
            inline LPCRITICAL_SECTION getCriticalSection() {
                return &_criticalSection;
            }
 
          private:
            MSMutex(const MSMutex& other);
            CRITICAL_SECTION _criticalSection;
        };

        typedef MSMutex Mutex;

        class MSScopedLock {
          public:
            MSScopedLock(MSMutex& mutex) {
                _criticalSection = mutex.getCriticalSection();
                EnterCriticalSection(_criticalSection);
            }
 
            ~MSScopedLock() {
                LeaveCriticalSection(_criticalSection);
            }
 
          private:
            MSScopedLock(const MSScopedLock& other);
            LPCRITICAL_SECTION _criticalSection;
        };

        typedef MSScopedLock ScopedLock;

        template <typename T> class ThreadLocalDataHolder {
          public:
            inline ThreadLocalDataHolder() : _key(TlsAlloc()) {};
 
            inline ~ThreadLocalDataHolder() {
                TlsFree(_key);
            };

            inline T* get() const {
                return (T*)TlsGetValue(_key);
            };

            inline T* operator->() const {
                return get();
            };

            inline T& operator*() const {
                return *get();
            };

            inline T* release() {
                T* result = (T*)TlsGetValue(_key);
                TlsSetValue(_key, NULL);
                return result;
            };

            inline void reset(T* p = NULL) {
                T* thing = (T*)TlsGetValue(_key);
                delete thing;
                TlsSetValue(_key, p);
            };
 
          private:
            DWORD _key;
        };
    } // namespace threading
} // namespace log4cpp
#endif