00001 // @(#)root/thread:$Id: TAtomicCountWin32.h 20882 2007-11-19 11:31:26Z rdm $ 00002 // Author: Fons Rademakers 14/11/06 00003 00004 /************************************************************************* 00005 * Copyright (C) 1995-2006, Rene Brun and Fons Rademakers. * 00006 * All rights reserved. * 00007 * * 00008 * For the licensing terms see $ROOTSYS/LICENSE. * 00009 * For the list of contributors see $ROOTSYS/README/CREDITS. * 00010 *************************************************************************/ 00011 00012 #ifndef ROOT_TAtomicCountWin32 00013 #define ROOT_TAtomicCountWin32 00014 00015 ////////////////////////////////////////////////////////////////////////// 00016 // // 00017 // TAtomicCountWin32 // 00018 // // 00019 // Class providing atomic operations on a long. Setting, getting, // 00020 // incrementing and decrementing are atomic, thread safe, operations. // 00021 // // 00022 // This implementation uses the Win32 InterLocked API for locking. // 00023 // // 00024 // ATTENTION: Don't use this file directly, it is included by // 00025 // TAtomicCount.h. // 00026 // // 00027 ////////////////////////////////////////////////////////////////////////// 00028 00029 # include "Windows4Root.h" 00030 00031 class TAtomicCount { 00032 private: 00033 Long_t fCnt; // counter 00034 00035 TAtomicCount(const TAtomicCount &); // not implemented 00036 TAtomicCount &operator=(const TAtomicCount &); // not implemented 00037 00038 public: 00039 explicit TAtomicCount(Long_t v) : fCnt(v) { } 00040 void operator++() { InterlockedIncrement(&fCnt); } 00041 Long_t operator--() { return InterlockedDecrement(&fCnt); } 00042 operator long() const { return static_cast<long const volatile &>(fCnt); } 00043 void Set(Long_t v) { fCnt = v; } 00044 Long_t Get() const { return static_cast<long const volatile &>(fCnt); } 00045 }; 00046 00047 #endif
1.5.1