Conversation with #inferno at Fri Jun 23 18:19:16 2017 on powerman@chat.freenode.net (irc)
(18:19:16) #inferno: Topic for #inferno set by anth at 19:45:51 on 04/07/15
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(20:12:27) david_boddie: qrstuv: Thanks for the hints about dis.
(20:12:47) qrstuv: did you get what i mentioned a few days ago?
(20:15:58) qrstuv: encoding of double indirect operands is documented in dis(6) and needn't be gleaned from limbo -S output
(20:15:58) qrstuv: child stack frames aren't marked in the ref map of their parent stack frame probably because they aren't managed by the garbage collector
(20:16:58) david_boddie: Yes, I looked at powerman's channel logs. Thanks!
(20:17:18) david_boddie: I'm trying to remember the details of what I did.
(20:18:40) david_boddie: It's good to know that someone looked at it, anyway. :-)
(20:22:05) qrstuv: some guy did this, but it seems like a fairly pointless change:
(20:22:07) qrstuv: https://github.com/szhilkin/inferno-openmoko/commit/3df481f2cee2fcf355d161ac308f481ba7a51595
(20:24:11) qrstuv: he replaced the specialized stack extent reference counting with the regular reference counting
(20:25:55) qrstuv: saves a tiny bit of code, and the stack extents must now be pointlessly scanned by the garbage collector
(20:27:12) qrstuv: as if the garbage collector didn't have enough to scan one hundred times per second already
(20:28:12) david_boddie: So is it normally the case that the parent stack frame owns the child frames and something else is responsible for cleaning them up?
(20:30:43) qrstuv: ret and mcall clean them up
(20:31:33) qrstuv: i guess calling that reference counting is a bit abstract
(20:55:43) david_boddie: OK. Interesting to know. I'm not sure how much I'll do with dis in the near future but it's good to know there are people who know about this stuff.
(21:00:57) qrstuv: i'm not one of those people
(21:36:14) david_boddie: :-)
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