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Diffstat (limited to 'libs/appleutility/CAReferenceCounted.h')
-rw-r--r-- | libs/appleutility/CAReferenceCounted.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/libs/appleutility/CAReferenceCounted.h b/libs/appleutility/CAReferenceCounted.h new file mode 100644 index 0000000000..d57f97c31f --- /dev/null +++ b/libs/appleutility/CAReferenceCounted.h @@ -0,0 +1,83 @@ +/* Copyright: © Copyright 2005 Apple Computer, Inc. All rights reserved. + + Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. + ("Apple") in consideration of your agreement to the following terms, and your + use, installation, modification or redistribution of this Apple software + constitutes acceptance of these terms. If you do not agree with these terms, + please do not use, install, modify or redistribute this Apple software. + + In consideration of your agreement to abide by the following terms, and subject + to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs + copyrights in this original Apple software (the "Apple Software"), to use, + reproduce, modify and redistribute the Apple Software, with or without + modifications, in source and/or binary forms; provided that if you redistribute + the Apple Software in its entirety and without modifications, you must retain + this notice and the following text and disclaimers in all such redistributions of + the Apple Software. Neither the name, trademarks, service marks or logos of + Apple Computer, Inc. may be used to endorse or promote products derived from the + Apple Software without specific prior written permission from Apple. Except as + expressly stated in this notice, no other rights or licenses, express or implied, + are granted by Apple herein, including but not limited to any patent rights that + may be infringed by your derivative works or by other works in which the Apple + Software may be incorporated. + + The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO + WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED + WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN + COMBINATION WITH YOUR PRODUCTS. + + IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION + OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT + (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN + ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +/*============================================================================= + CAReferenceCounted.h + +=============================================================================*/ + +#ifndef __CAReferenceCounted_h__ +#define __CAReferenceCounted_h__ + +#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__) + #include <CoreServices/CoreServices.h> +#else + #include <CoreServices.h> +#endif + +#if TARGET_OS_WIN32 + #include "CAWindows.h" +#endif + +// base class for reference-counted objects +class CAReferenceCounted { +public: + CAReferenceCounted() : mRefCount(1) {} + + void retain() { IncrementAtomic(&mRefCount); } + + void release() + { + // this returns the ORIGINAL value, not the new one. + SInt32 rc = DecrementAtomic(&mRefCount); + if (rc == 1) { + delete this; + } + } + +protected: + virtual ~CAReferenceCounted() { } + +private: + SInt32 mRefCount; + + CAReferenceCounted(const CAReferenceCounted &a) : mRefCount(0) { } + CAReferenceCounted operator=(const CAReferenceCounted &a) { return *this; } +}; + + +#endif // __CAReferenceCounted_h__ |