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Change the __NEXT_RUNTIME__ test to __OBJC_GC__ which is what I really meant

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but I had to look up which preprocessor define was emitted by -fobjc-gc.
Also improve the comments a bit.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51590 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
David Elliott 2008-02-08 08:04:46 +00:00
parent 49bd8fd291
commit 74b57569a3
1 changed files with 7 additions and 4 deletions
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11
include/wx/cocoa/ObjcRef.h
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@ -15,7 +15,7 @@
// Reuse wxCFRef-related code (e.g. wxCFRetain/wxCFRelease)
#include "wx/mac/corefoundation/cfref.h"
// NOTE WELL: We can only know which Objective-C runtime is being used when compiling Objective-C.
// NOTE WELL: We can only know whether or not GC can be used when compiling Objective-C.
// Therefore we cannot implement these functions except when compiling Objective-C.
#ifdef __OBJC__
/*! @function wxGCSafeRetain
@ -58,7 +58,7 @@
template <class Type>
inline Type * wxGCSafeRetain(Type *r)
{
#ifdef __NEXT_RUNTIME__
#ifdef __OBJC_GC__
return static_cast<Type*>(wxCFRetain(r));
#else
return [r retain];
@ -90,7 +90,7 @@ inline Type * wxGCSafeRetain(Type *r)
template <class Type>
inline void wxGCSafeRelease(Type *r)
{
#ifdef __NEXT_RUNTIME__
#ifdef __OBJC_GC__
wxCFRelease(r);
#else
[r release];
@ -99,7 +99,10 @@ inline void wxGCSafeRelease(Type *r)
#else
// NOTE: When not compiling Objective-C, declare these functions such that they can be
// used by other inline-implemented methods. Since those methods in turn will not actually
// be used from non-ObjC code there is no problem.
// be used from non-ObjC code the compiler ought not to emit them. If it emits an out
// of line copy of functions using these functions then presumably it will have also emitted
// in at least one source file an out of line copy of these functions and there will be
// no problem at link time.
template <class Type>
inline Type * wxGCSafeRetain(Type *r);