Detect the presence of libdispatch and, if available, use it for collection

enumeration methods that take blocks as arguments. This allows us to implement
the NSEnumerationConcurrent option of those methods with minimal effort.

The searching methods on NSIndexSet and all the sorting methods are still
missing.



git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@35010 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
thebeing 2012-03-27 17:05:19 +00:00
parent de00ca1cc4
commit a5c6cfa9f7
15 changed files with 22804 additions and 4578 deletions

View file

@ -34,6 +34,7 @@
#import "Foundation/NSAutoreleasePool.h"
#import "Foundation/NSFileManager.h"
#import "Foundation/NSCoder.h"
#import "Foundation/NSLock.h"
#import "Foundation/NSSet.h"
#import "Foundation/NSValue.h"
#import "Foundation/NSKeyValueCoding.h"
@ -43,6 +44,7 @@
#import "GNUstepBase/NSObject+GNUstepBase.h"
#import "GSPrivate.h"
#import "GSFastEnumeration.h"
#import "GSDispatch.h"
static BOOL GSMacOSXCompatiblePropertyLists(void)
{
@ -162,25 +164,26 @@ static SEL appSel;
usingBlock: (GSKeysAndObjectsEnumeratorBlock)aBlock
{
/*
* NOTE: For the moment, we ignore the NSEnumerationOptions because, according
* to the Cocoa documentation, NSEnumerationReverse is undefined for
* NSDictionary and we cannot handle NSEnumerationConcurrent without
* libdispatch.
* NOTE: According to the Cocoa documentation, NSEnumerationReverse is
* undefined for NSDictionary. NSEnumerationConcurrent will be handled through
* the GS_DISPATCH_* macros if libdispatch is available.
*/
id<NSFastEnumeration> enumerator = [self keyEnumerator];
SEL objectForKeySelector = @selector(objectForKey:);
IMP objectForKey = [self methodForSelector: objectForKeySelector];
BOOL shouldStop = NO;
BLOCK_SCOPE BOOL shouldStop = NO;
id obj;
GS_DISPATCH_CREATE_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
FOR_IN(id, key, enumerator)
obj = (*objectForKey)(self, objectForKeySelector, key);
CALL_BLOCK(aBlock, key, obj, &shouldStop);
GS_DISPATCH_SUBMIT_BLOCK(enumQueueGroup, enumQueue, if (shouldStop){return;};, return;, aBlock, key, obj, &shouldStop);
if (YES == shouldStop)
{
break;
}
END_FOR_IN(enumerator)
GS_DISPATCH_TEARDOWN_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
}
/**
@ -1008,24 +1011,47 @@ compareIt(id o1, id o2, void* context)
id<NSFastEnumeration> enumerator = [self keyEnumerator];
SEL objectForKeySelector = @selector(objectForKey:);
IMP objectForKey = [self methodForSelector: objectForKeySelector];
BOOL shouldStop = NO;
BLOCK_SCOPE BOOL shouldStop = NO;
NSMutableSet *buildSet = [NSMutableSet new];
SEL addObjectSelector = @selector(addObject:);
IMP addObject = [buildSet methodForSelector: addObjectSelector];
NSSet *resultSet = nil;
id obj;
id obj = nil;
BLOCK_SCOPE NSLock *setLock = nil;
if (opts & NSEnumerationConcurrent)
{
setLock = [NSLock new];
}
GS_DISPATCH_CREATE_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
FOR_IN(id, key, enumerator)
obj = (*objectForKey)(self, objectForKeySelector, key);
# if (__has_feature(blocks) && (GS_USE_LIBDISPATCH == 1))
dispatch_group_async(enumQueueGroup, enumQueue, ^(void){if (shouldStop)
{
return;
}
if (aPredicate(key, obj, &shouldStop))
{
[setLock lock];
addObject(buildSet, addObjectSelector, key);
[setLock unlock];
}
});
# else
if (CALL_BLOCK(aPredicate, key, obj, &shouldStop))
{
addObject(buildSet, addObjectSelector, key);
}
# endif
if (YES == shouldStop)
{
break;
}
END_FOR_IN(enumerator)
GS_DISPATCH_TEARDOWN_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
[setLock release];
resultSet = [NSSet setWithSet: buildSet];
[buildSet release];
return resultSet;