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Switch the order of the reference count and the zone so that the reference count (in reference counted mode) is always immediately in front of the object. Please test this!!

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Opt NSObject into the fast path for ARC.  ARC will now not call the retain / release / autorelease methods on NSObject or any classes that inherit their implementation of these methods from NSObject.  In quick and dirty testing, this gives about a 10-20% speedup.  



git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@33446 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
David Chisnall 2011-07-04 11:31:28 +00:00
parent 38566d1888
commit 2a2d7339d1
1 changed files with 3 additions and 2 deletions
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5
Source/NSObject.m
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@ -409,8 +409,8 @@ static inline NSLock *GSAllocationLockForObject(id p)
* (before the start) in each object.
*/
typedef struct obj_layout_unpadded {
NSUInteger retained;
NSZone *zone;
NSUInteger retained;
} unp;
#define UNP sizeof(unp)
@ -420,8 +420,8 @@ typedef struct obj_layout_unpadded {
* structure correct.
*/
struct obj_layout {
NSUInteger retained;
NSZone *zone;
NSUInteger retained;
char padding[ALIGN - ((UNP % ALIGN) ? (UNP % ALIGN) : ALIGN)];
};
typedef struct obj_layout *obj;
@ -963,6 +963,7 @@ NSShouldRetainWithZone (NSObject *anObject, NSZone *requestedZone)
* </p>
*/
@implementation NSObject
- (void)_ARCCompliantRetainRelease {}
+ (void) _becomeMultiThreaded: (NSNotification *)aNotification
{