/* | |
* Copyright (C) 2004 Apple Computer, Inc. All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#import <CoreFoundation/CFBase.h> | |
#import <Foundation/NSObject.h> | |
// nil-checked CFRetain/CFRelease covers for Objective-C ids | |
// Use CFRetain, CFRelease, HardRetain, or HardRelease instead of | |
// -[NSObject retain] and -[NSObject release] if you want to store | |
// a pointer to an Objective-C object into memory that won't | |
// be scanned for GC, like a C++ object. | |
static inline id HardRetain(id obj) | |
{ | |
if (obj) CFRetain(obj); | |
return obj; | |
} | |
static inline void HardRelease(id obj) | |
{ | |
if (obj) CFRelease(obj); | |
} | |
// As if CF and Foundation had logically separate reference counts, | |
// this function first increments the CF retain count, and then | |
// decrements the NS retain count. This is needed to handle cases where | |
// -retain/-release aren't equivalent to CFRetain/HardRelease, such as | |
// when GC is used. | |
// Use HardRetainWithNSRelease after allocating and initializing a NSObject | |
// if you want to store a pointer to that object into memory that won't | |
// be scanned for GC, like a C++ object. | |
static inline id HardRetainWithNSRelease(id obj) | |
{ | |
HardRetain(obj); | |
[obj release]; | |
return obj; | |
} | |
// Use HardAutorelease to return an object made by a CoreFoundation | |
// "create" or "copy" function as an autoreleased and garbage collected | |
// object. CF objects need to be "made collectable" for autorelease to work | |
// properly under GC. | |
static inline id HardAutorelease(CFTypeRef obj) | |
{ | |
if (obj) | |
CFMakeCollectable(obj); | |
[(id)obj autorelease]; | |
return (id)obj; | |
} |