Paul Davis
000609901b
This follows the letter sent from Waves Audio Ltd. to Paul Davis dated February 20th 2014 agreeing to release this code under the GNU Public License, version 2, with copyright owned by Waves Audio Ltd
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
/*
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Copyright (C) 2014 Waves Audio Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef WCREFMANAGER_H
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#define WCREFMANAGER_H
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#define SAFE_RELEASE(p) if (p) {p->Release(); p = NULL;}
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//In order to use this interface, derive the Interface class
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//from WCRefManager_Interface and derive the implementation class
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//from WCRefManager_Impl. Further, in the implementation class
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//declaration, place the macro WCREFMANAGER_IMPL.
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class WCRefManager_Interface
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{
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public:
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/// Constructor.
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WCRefManager_Interface() {};
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/// Destructor.
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virtual ~WCRefManager_Interface() {};
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/// Adds a reference to class.
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virtual void AddRef() = 0;
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/// Decrements reference count and deletes the object if reference count becomes zero.
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virtual void Release() = 0;
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};
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///! See details at WCRefManager_Interface for how to use this.
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class WCRefManager_Impl
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{
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public:
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WCRefManager_Impl () : m_RefCount(1) {}
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virtual ~WCRefManager_Impl() {}
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protected:
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/// Variable to store reference count.
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unsigned int m_RefCount;
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/// Helper to put implementation in an interface derived class, don't forget to
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/// derive the impl from WCRefManager_Impl
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#define WCREFMAN_IMPL \
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public: \
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virtual void AddRef() {m_RefCount++;} \
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virtual void Release() {m_RefCount--; if (m_RefCount<=0) delete this;}
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};
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class WCRefManager
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{
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public:
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/// Construcotr.
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WCRefManager();
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/// Destructor.
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virtual ~WCRefManager();
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/// Adds a reference to class.
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void AddRef();
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/// Decrements reference count and deletes the object if reference count becomes zero.
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void Release();
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private:
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/// Variable to store reference count.
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unsigned int m_RefCount;
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};
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#endif // WCREFMANAGER_H
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