diff --git a/headers/private/shared/ObjectLocker.h b/headers/private/shared/ObjectLocker.h new file mode 100644 index 0000000000..f7dac2a97d --- /dev/null +++ b/headers/private/shared/ObjectLocker.h @@ -0,0 +1,100 @@ +//------------------------------------------------------------------------------ +// Copyright (c) 2001-2002, OpenBeOS +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. +// +// File Name: ObjectLocker.h +// Author(s): Erik Jaesler (erik@cgsoftware.com) +// Description: A templatized version of BAutolock. Client class needs to +// supply: +// bool Lock() -- returns whether lock succeeded +// void Unlock() -- unlocks the class +//------------------------------------------------------------------------------ + +#ifndef OBJECTLOCKER_H +#define OBJECTLOCKER_H + +// Standard Includes ----------------------------------------------------------- + +// System Includes ------------------------------------------------------------- + +// Project Includes ------------------------------------------------------------ + +// Local Includes -------------------------------------------------------------- + +// Local Defines --------------------------------------------------------------- + +// Globals --------------------------------------------------------------------- + +namespace BPrivate { + +template +class BObjectLocker +{ + public: + inline BObjectLocker(T* looper); + inline BObjectLocker(T& locker); + + inline ~BObjectLocker(); + + inline bool IsLocked(void); + + private: + T* fLockClient; + bool fIsLocked; +}; + +template +BObjectLocker::BObjectLocker(T* client) + : fLockClient(client), fIsLocked(client->Lock()) +{ +} + +template +BObjectLocker::BObjectLocker(T& client) + : fLockClient(&client), fIsLocked(client.Lock()) +{ +} + +template +BObjectLocker::~BObjectLocker() +{ + if (fIsLocked) + { + fLockClient->Unlock(); + } +} + +template +bool BObjectLocker::IsLocked(void) +{ + return fIsLocked; +} + +} // namespace BPrivate + +#endif //OBJECTLOCKER_H + +/* + * $Log $ + * + * $Id $ + * + */ +