Re: coroutines local userdata and GC

[Anton Titov <anton@...>]

On 18.11.2014 06:47, arioch82 wrote:
> >From what i understand if the coroutine is freed then all local variables
> inside that function should be garbage collected, at that point the userdata
> shouldn't have any references anymore and should be collected too but for
> some reason this is not happening.

Every running function (and all the functions that called it) are
referenced from the Lua stack and would not be collected even if there
are no other references to them. This is a good thing that prevents
crashes ;)

Corotines are actually functions called in separate Lua (sub-)states
with a corotine library doing some scheduling. Therefore even yielded
corotine is "running function" for the purposes in the first paragraph.

Your solution is to replace "while true do" with some more meaningful
condition and call the corotine one more time when destroying to let it
exit.

Best,
Anton