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added option to disable memory cache 

use this:
```shouldDisableMemoryCache``` to toggle memory cache
This commit is contained in:
mythodeia 2015-07-15 11:35:03 +03:00
parent a9ea132874
commit df751e737b
2 changed files with 21 additions and 8 deletions
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5
SDWebImage/SDImageCache.h
View File

@ -47,6 +47,11 @@ typedef void(^SDWebImageCalculateSizeBlock)(NSUInteger fileCount, NSUInteger tot
*/ */
@property (assign, nonatomic) BOOL shouldDisableiCloud; @property (assign, nonatomic) BOOL shouldDisableiCloud;
/**
* use memory cache [defaults to YES]
*/
@property (assign, nonatomic) BOOL shouldCacheImagesInMemory;
/** /**
* The maximum "total cost" of the in-memory image cache. The cost function is the number of pixels held in memory. * The maximum "total cost" of the in-memory image cache. The cost function is the number of pixels held in memory.
*/ */

24
SDWebImage/SDImageCache.m
View File

@ -116,6 +116,9 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
// Set decompression to YES // Set decompression to YES
_shouldDecompressImages = YES; _shouldDecompressImages = YES;
// memory cache enabled
_shouldCacheImagesInMemory = YES;
// Disable iCloud // Disable iCloud
_shouldDisableiCloud = YES; _shouldDisableiCloud = YES;
@ -196,9 +199,11 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
if (!image || !key) { if (!image || !key) {
return; return;
} }
// if memory cache is enabled
NSUInteger cost = SDCacheCostForImage(image); if (self.shouldCacheImagesInMemory) {
[self.memCache setObject:image forKey:key cost:cost]; NSUInteger cost = SDCacheCostForImage(image);
[self.memCache setObject:image forKey:key cost:cost];
}
if (toDisk) { if (toDisk) {
dispatch_async(self.ioQueue, ^{ dispatch_async(self.ioQueue, ^{
@ -290,6 +295,7 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
} }
- (UIImage *)imageFromDiskCacheForKey:(NSString *)key { - (UIImage *)imageFromDiskCacheForKey:(NSString *)key {
// First check the in-memory cache... // First check the in-memory cache...
UIImage *image = [self imageFromMemoryCacheForKey:key]; UIImage *image = [self imageFromMemoryCacheForKey:key];
if (image) { if (image) {
@ -298,7 +304,7 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
// Second check the disk cache... // Second check the disk cache...
UIImage *diskImage = [self diskImageForKey:key]; UIImage *diskImage = [self diskImageForKey:key];
if (diskImage) { if (diskImage && self.shouldCacheImagesInMemory) {
NSUInteger cost = SDCacheCostForImage(diskImage); NSUInteger cost = SDCacheCostForImage(diskImage);
[self.memCache setObject:diskImage forKey:key cost:cost]; [self.memCache setObject:diskImage forKey:key cost:cost];
} }
@ -369,7 +375,7 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
@autoreleasepool { @autoreleasepool {
UIImage *diskImage = [self diskImageForKey:key]; UIImage *diskImage = [self diskImageForKey:key];
if (diskImage) { if (diskImage && self.shouldCacheImagesInMemory) {
NSUInteger cost = SDCacheCostForImage(diskImage); NSUInteger cost = SDCacheCostForImage(diskImage);
[self.memCache setObject:diskImage forKey:key cost:cost]; [self.memCache setObject:diskImage forKey:key cost:cost];
} }
@ -400,9 +406,11 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
if (key == nil) { if (key == nil) {
return; return;
} }
[self.memCache removeObjectForKey:key]; if (self.shouldCacheImagesInMemory) {
[self.memCache removeObjectForKey:key];
}
if (fromDisk) { if (fromDisk) {
dispatch_async(self.ioQueue, ^{ dispatch_async(self.ioQueue, ^{
[_fileManager removeItemAtPath:[self defaultCachePathForKey:key] error:nil]; [_fileManager removeItemAtPath:[self defaultCachePathForKey:key] error:nil];