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Re: [Chicken-users] remove enable/disable interrupt flag
From: |
John Cowan |
Subject: |
Re: [Chicken-users] remove enable/disable interrupt flag |
Date: |
Fri, 30 Sep 2011 11:47:12 -0400 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Alaric Snell-Pym scripsit:
> Yeah. We need to make sure that Chicken's stack limit (which triggers a
> GC) is sufficiently clear of the real stack limit to give us legroom for
> any fun and games that may occur in the runtime.
The chance of a stack blowup is essentially nil. Chicken, the last time
I looked, has a stack limit of 64K; typical desktop OSes provide stack
sizes in the megabytes by default.
Of course, if you wind up the C stack by having Chicken call C which calls
Chicken which calls C to some serious depth, all bets are off.
> Your other points about multiple signals sugget it should be a proper
> queue, not just a bitmask. Although I have a vague feeling that Unix was
> allowed to coalesce pending signals as it just used a bitmask itself...
In the old days, yes. Now signals have guaranteed delivery, at least if
you use sigaction() to catch them. I suspect that most of our systems
in fact will work with signal(), as it's just a thin layer over sigaction(),
but better not to rely on that.
> AIUI mmap of /dev/zero (to allocate more
> empty heap) can't block on very much...
I don't think you can mmap a device, can you?
--
I don't know half of you half as well John Cowan
as I should like, and I like less than half address@hidden
of you half as well as you deserve. http://www.ccil.org/~cowan
--Bilbo
- Re: [Chicken-users] remove enable/disable interrupt flag, (continued)
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Jörg F . Wittenberger, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alaric Snell-Pym, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Jörg F . Wittenberger, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alaric Snell-Pym, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alaric Snell-Pym, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alaric Snell-Pym, 2011/09/30
- Re: [Chicken-users] remove enable/disable interrupt flag,
John Cowan <=
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/30
- Re: [Chicken-users] remove enable/disable interrupt flag, Jörg F . Wittenberger, 2011/09/30
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/30
- Re: [Chicken-users] remove enable/disable interrupt flag, John Cowan, 2011/09/30
- Re: [Chicken-users] remove enable/disable interrupt flag, Jörg F . Wittenberger, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Jörg F . Wittenberger, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Jörg F . Wittenberger, 2011/09/29
- Re: [Chicken-users] remove enable/disable interrupt flag, Alan Post, 2011/09/29