Size of cached objects by SDWebImage

Question

I wanted to calculate the current in-memory size occupied by SDWebImage (Not the max size of SDWebImage). During the application usage i need to track the current RAM allocation by SDWebImage cached objects.

Basically i wanted to calculate the size of all images (present at that time) in NSCache object.

How can i do this ?

Thanks.

score 7 · Answer 1 · answered Jan 21 '16 at 11:27

7

I think this will return Memory Cache using given code.

Use getSize function of SDImageCache.h. Which returns in memory cache.

[[SDImageCache sharedImageCache] getSize];

Follow SDWebImage for more details.

answered Jan 21 '16 at 11:27

technerd

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[[SDImageCache sharedImageCache] getSize] gives the disk cache size not the memory cache. – Karthik207 Jan 21 '16 at 11:28
Just for reference, the retrieved size is in bytes. – maxdelia May 21 '17 at 08:34
`getSize` renamed to `totalDiskSize`. – AbhinayMe Sep 02 '19 at 02:32

Ramy Kfoury · Answer 2 · 2016-01-21T11:27:34.280

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do you mean this, taken from SDWebImageCache.h:

/**
  * The maximum "total cost" of the in-memory image cache. The cost function is the number of pixels held in memory.
  */

  @property (assign, nonatomic) NSUInteger maxMemoryCost;`

then total number of bytes is number of pixels held in memory * number of bytes per pixel, in this case 4 Bytes/Pixel

edited Jan 21 '16 at 11:27

answered Jan 21 '16 at 11:19

Ramy Kfoury

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The amount of RAM consumed by cache(at a given point of time) in bytes/KB. – Karthik207 Jan 21 '16 at 11:22
From the maxMemoryCost , how can i calculate the memory allocated? – Karthik207 Jan 21 '16 at 11:24
Is it always 4 Bytes/Pixel ? How do you determine number of bytes per pixel ? – Karthik207 Jan 21 '16 at 11:56
I just tried [[SDImageCache sharedImageCache] maxMemoryCost] , but it return 0 ! – Karthik207 Jan 21 '16 at 12:03

Size of cached objects by SDWebImage

2 Answers2