[Vm-dev] Igor's fast become for CompiledMethods in Cog

Igor Stasenko siguctua at gmail.com
Tue Jan 31 20:19:11 UTC 2012


On 31 January 2012 20:50, Eliot Miranda <eliot.miranda at gmail.com> wrote:
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> On Tue, Jan 31, 2012 at 11:22 AM, Mariano Martinez Peck <marianopeck at gmail.com> wrote:
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>> Hi Eliot. Me again :)   I was checking the changes Igor did some time ago for the fast become where he basically swapped the bytes contents between the objects when they were the same size and same header type. He put such code in separate primtives and some changes in the image side to call them. I have just played with them and they seem to work. I have 2 questions for you:
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>> 1) Do you think that this new fast become can have problems when becoming CompiledMethods? I am asking because of the JIT/Pic. Maybe I need a flushCache or something?
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> Yes, almost certainly.  You'd want to do a flushCache on both methods.
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are there other object types which we need to be careful with?
because i was thinking to just put a check in fast-become prim and
simply fail the prim if object type(s) to be swapped are not
supported, so user will be forced to use slow good-old #become:

-- 
Best regards,
Igor Stasenko.


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