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Use global low prio queue instead of a dedicated queue for caching I/Os

This commit is contained in:
Olivier Poitrey 2012-11-06 03:01:16 +01:00
parent a8a9b12896
commit 13210a6925
1 changed files with 6 additions and 17 deletions
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23
SDWebImage/SDImageCache.m
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@ -13,7 +13,6 @@
#import <mach/mach.h>
#import <mach/mach_host.h>
const char *kDiskIOQueueName = "com.hackemist.SDWebImageDiskCache";
static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
@interface SDImageCache ()
@ -116,8 +115,7 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
if (toDisk)
{
dispatch_queue_t queue = dispatch_queue_create(kDiskIOQueueName, nil);
dispatch_async(queue, ^
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^
{
NSData *data = imageData;
@ -146,7 +144,6 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
[fileManager createFileAtPath:[self cachePathForKey:key] contents:data attributes:nil];
}
});
dispatch_release(queue);
}
}
@ -179,9 +176,8 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
}
NSString *path = [self cachePathForKey:key];
dispatch_queue_t queue = dispatch_queue_create(kDiskIOQueueName, nil);
dispatch_io_t ioChannel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path.UTF8String, O_RDONLY, 0, queue, nil);
dispatch_io_read(ioChannel, 0, SIZE_MAX, queue, ^(bool done, dispatch_data_t dispatchedData, int error)
dispatch_io_t ioChannel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path.UTF8String, O_RDONLY, 0, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), nil);
dispatch_io_read(ioChannel, 0, SIZE_MAX, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^(bool done, dispatch_data_t dispatchedData, int error)
{
if (error)
{
@ -214,7 +210,6 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
});
});
dispatch_release(queue);
dispatch_release(ioChannel);
}
@ -235,12 +230,10 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
if (fromDisk)
{
dispatch_queue_t queue = dispatch_queue_create(kDiskIOQueueName, nil);
dispatch_async(queue, ^
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^
{
[[NSFileManager defaultManager] removeItemAtPath:[self cachePathForKey:key] error:nil];
});
dispatch_release(queue);
}
}
@ -251,8 +244,7 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
- (void)clearDisk
{
dispatch_queue_t queue = dispatch_queue_create(kDiskIOQueueName, nil);
dispatch_async(queue, ^
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^
{
[[NSFileManager defaultManager] removeItemAtPath:self.diskCachePath error:nil];
[[NSFileManager defaultManager] createDirectoryAtPath:self.diskCachePath
@ -260,13 +252,11 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
attributes:nil
error:NULL];
});
dispatch_release(queue);
}
- (void)cleanDisk
{
dispatch_queue_t queue = dispatch_queue_create(kDiskIOQueueName, nil);
dispatch_async(queue, ^
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^
{
NSDate *expirationDate = [NSDate dateWithTimeIntervalSinceNow:-self.maxCacheAge];
NSDirectoryEnumerator *fileEnumerator = [[NSFileManager defaultManager] enumeratorAtPath:self.diskCachePath];
@ -280,7 +270,6 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
}
}
});
dispatch_release(queue);
}
-(int)getSize