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Using dispatch_once pattern for initializing UIImageView request operation queue singleton

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Initializing operation queue with NSOperationQueueDefaultMaxConcurrentOperationCount
This commit is contained in:
Mattt Thompson 2012-08-31 16:57:04 -07:00
parent 5ddd070607
commit 70dff01807
1 changed files with 4 additions and 3 deletions
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7
AFNetworking/UIImageView+AFNetworking.m
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@ -59,10 +59,11 @@ static char kAFImageRequestOperationObjectKey;
+ (NSOperationQueue *)af_sharedImageRequestOperationQueue { + (NSOperationQueue *)af_sharedImageRequestOperationQueue {
static NSOperationQueue *_af_imageRequestOperationQueue = nil; static NSOperationQueue *_af_imageRequestOperationQueue = nil;
if (!_af_imageRequestOperationQueue) { static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_af_imageRequestOperationQueue = [[NSOperationQueue alloc] init]; _af_imageRequestOperationQueue = [[NSOperationQueue alloc] init];
[_af_imageRequestOperationQueue setMaxConcurrentOperationCount:8]; [_af_imageRequestOperationQueue setMaxConcurrentOperationCount:NSOperationQueueDefaultMaxConcurrentOperationCount];
} });
return _af_imageRequestOperationQueue; return _af_imageRequestOperationQueue;
} }