mirror of
https://github.com/gnustep/libs-base.git
synced 2025-04-25 09:41:15 +00:00
50662ad093
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@31107 72102866-910b-0410-8b05-ffd578937521
94 lines
1.7 KiB
Objective-C
94 lines
1.7 KiB
Objective-C
#import "Foundation/NSObject.h"
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#if !defined(_NATIVE_OBJC_EXCEPTIONS)
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/* If we don't have support for native exceptions then we can't use
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* @synchronized, so we use NSException and NSLock.
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* This is a horribly inefficient, but you probably shouldn't be using
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* the property functions anyway :-)
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*/
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#import "Foundation/NSException.h"
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#import "Foundation/NSLock.h"
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static NSRecursiveLock *propertyLock = nil;
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static inline NSRecursiveLock*
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pLock()
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{
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if (propertyLock == nil)
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{
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[gnustep_global_lock lock];
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if (propertyLock == nil)
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{
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propertyLock = [NSRecursiveLock new];
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}
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[gnustep_global_lock unlock];
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}
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return propertyLock;
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}
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#define SYNCBEG(X) \
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[pLock() lock]; \
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NS_DURING
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#define SYNCEND() \
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NS_HANDLER \
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[pLock() unlock]; \
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[localException raise]; \
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NS_ENDHANDLER \
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[pLock() unlock]
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#else
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#define SYNCBEG(X) @synchronized(X) {
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#define SYNCEND() }
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#endif
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id
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objc_getProperty(id obj, SEL _cmd, ptrdiff_t offset, BOOL isAtomic)
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{
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char *addr;
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id ret;
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if (isAtomic)
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{
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id result = nil;
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SYNCBEG(obj)
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result = objc_getProperty(obj, _cmd, offset, NO);
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SYNCEND();
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return result;
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}
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addr = (char*)obj;
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addr += offset;
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ret = *(id*)addr;
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return [[ret retain] autorelease];
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}
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void
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objc_setProperty(id obj, SEL _cmd, ptrdiff_t offset, id arg, BOOL isAtomic,
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BOOL isCopy)
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{
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char *addr;
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id old;
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if (isAtomic)
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{
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SYNCBEG(obj)
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objc_setProperty(obj, _cmd, offset, arg, NO, isCopy);
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SYNCEND();
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return;
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}
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if (isCopy)
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{
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arg = [arg copy];
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}
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else
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{
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arg = [arg retain];
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}
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addr = (char*)obj;
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addr += offset;
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old = *(id*)addr;
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*(id*)addr = arg;
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[old release];
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}
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