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bug#25265: make-thread crashes in OS X 10.6
From: |
Alan Third |
Subject: |
bug#25265: make-thread crashes in OS X 10.6 |
Date: |
Tue, 2 May 2017 21:49:35 +0100 |
User-agent: |
Mutt/1.7.2 (2016-11-26) |
On Sat, Dec 24, 2016 at 12:06:45PM +0100, Charles A. Roelli wrote:
> Running Emacs -Q on the latest commit (e36a3882),
>
> M-: (make-thread (lambda () "string"))
>
> appears to hang Emacs immediately.
I’ve been working on this on and off for a while now, and I just can’t
fix it.
I’ve attached two patches that together are the best I’ve managed to
achieve, but unfortunately it randomly freezes up with 100% CPU usage.
I’ve not yet managed to work out what it’s doing when it goes into the
100% CPU loop. I can only assume I’ve missed some crucial case in
ns_select or something.
The first patch stops the NS port from using SIGIO, as it seems to be
the source of a number of problems. The second removes the NS event
loop in ns_select as it requires block_input/unblock_input wrapped
around it, but that’s what’s causing the crash in make-thread.
Instead it just looks for whether there is a new NS event as I don’t
think that requires blocking input.
--
Alan Third
0001-Don-t-use-SIGIO-in-NS.patch
Description: Remove SIGIO stuff
0001-Remove-event-loop-from-ns_select.patch
Description: Remove NS event loop from ns_select
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