Remove program cache entry?

[Samir Kharchi]

Hi,

I am using the program cache which works just fine but I wonder if there is a way to remove a previously added program from the cache (without removing all others existing in that same cache instance)?
All I could find was a call to clear the whole cache.

Cheers
Sam

[Jakub Szuppe]

Maybe it's not possible, but first: why do you need to clear cache only for a previously added OpenCL program? 

[Samir Kharchi]

I need individual control over which program in the cache is cleared as it shall be user input driven.
And I don't want to create a cache instance for each program (wanna keep code complexity to a minimum), so it would be very useful to have such a member function in the program cache (and lru_cache for that matter).

[Jakub Szuppe]

I get it that you need individual control over which program in the program_cache is cleared, I am asking you why you
need it, because normally the cache does not need to be cleared.

If it is because you make changes to the code you just need to use sha1 function to generate cache key

for the kernel (see https://github.com/boostorg/compute/blob/master/include/boost/compute/detail/meta_kernel.hpp#L363).

Currently lru_cache that is used for online caching (program_cache) does not have method for removing a previously 

added program (or removing by cache_key). 

[Samir Kharchi]

Ah I see. That's even better! Thanks. Yes, it's about code changes.

[Samir Kharchi]

Oh, one question: this mean that if e.g. the kernel code changes this will result in another (additional) cache entry right?

[Jakub Szuppe]

Yes, this will be additional entry, but I don't think that's a problem, is it? 

[Samir Kharchi]

Nope, no prob. Just wanted to be sure I know what's happening there. Cheers

[Jakub Szuppe]

Ok,I'm glad I could help.