98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
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/*
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File: CAReferenceCounted.h
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Abstract: Part of CoreAudio Utility Classes
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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#ifndef __CAReferenceCounted_h__
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#define __CAReferenceCounted_h__
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#include "CAAtomic.h"
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// base class for reference-counted objects
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class CAReferenceCounted {
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public:
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CAReferenceCounted() : mRefCount(1) {}
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void retain() { CAAtomicIncrement32(&mRefCount); }
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void release()
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{
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SInt32 rc = CAAtomicDecrement32(&mRefCount);
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if (rc == 0) {
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releaseObject();
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}
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}
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class Retainer {
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public:
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Retainer(CAReferenceCounted *obj) : mObject(obj) { mObject->retain(); }
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~Retainer() { mObject->release(); }
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private:
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CAReferenceCounted * mObject;
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};
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protected:
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virtual ~CAReferenceCounted() { }
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virtual void releaseObject ()
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{
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delete this;
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}
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#if DEBUG
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public:
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#endif
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SInt32 GetReferenceCount() const { return mRefCount; }
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private:
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SInt32 mRefCount;
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CAReferenceCounted(const CAReferenceCounted &a);
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CAReferenceCounted &operator=(const CAReferenceCounted &a);
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};
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#endif // __CAReferenceCounted_h__
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