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Global Value Cache [message #54211]

Thu, 11 June 2020 09:06

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

Well, this feature development started when testing UWord with R PI4. When I has loaded some .jpg images into document, resizing these took ages, because jpg decompression is quite slow. So the idea was that decompressed image should be cached before resized, but the old caching mechanism favored reduced memory consumption. Which was sad given there was about 3GB RAM free during testing...

So it got me thinking that we maybe should react to the amount of free memory (however you define it) in the system while caching. First I started to develop a protocol that would communicate the information about available memory to all registered caches but then got better idea: Image is Value, so why not create single global cache of Values, adjusted to available system memory...

The result is https://www.ultimatepp.org/src$Core$ValueCache_en-us.html.

Image cache ("MakeImage") is now just client to this global value cache and its size is periodically adjusted (when running GUI) to the system current status...

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[Message index]

		Global Value Cache By: mirek on Thu, 11 June 2020 09:06
		Re: Global Value Cache By: Tom1 on Sat, 13 June 2020 10:42
		Re: Global Value Cache By: coolman on Sat, 13 June 2020 14:44
		Re: Global Value Cache By: mirek on Sat, 13 June 2020 19:14
		Re: Global Value Cache By: coolman on Sun, 14 June 2020 04:28

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