Concurrent loading of images ?
Concurrent loading of images ?
- Subject: Concurrent loading of images ?
- From: Gabriel Zachmann via Cocoa-dev <email@hidden>
- Date: Fri, 8 May 2020 18:53:35 +0200
I have kind of a slide-show app.
Sometimes, when it switches from one image to the next, there is a noticeable
lag when the file size of the next image is very big, say, 50 MB or more.
Sometimes, it seems that loading the image takes 1-2 seconds.
So, I was thinking, maybe it helps to load the next image concurrently, while
the current one is still being displayed.
My question is: should I spawn a thread (using NSThreads'
detachNewThreadSelector), load the image in that thread, then exit the thread?
(no run loop)
Or should I use NSObject's performSelectorInBackground ?
I also read about the GCD's dispatch queues, but it seems to me that this would
not be the suitable approach since I always only have one task running
concurrently to the main thread.
What do you think?
Best regards, Gabriel
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