Race condition hangs on multiple mintty/tcsh? Brad Wetmore

[Thomas Wolff]

Am 04.08.2020 um 00:13 schrieb Brad Wetmore via Cygwin:
> Hi,
>
> I generally kick off multiple (10) mintty sessions, and place them around the screen.
>
> C:/cygwin64/bin/mintty.exe -i /Cygwin-Terminal.ico \
> --position @3 --position 120,0 --size 80x71 /bin/tcsh &
> C:/cygwin64/bin/mintty.exe -i /Cygwin-Terminal.ico \
> --position @3 --position 715,0 --size 80x45 /bin/tcsh &
> C:/cygwin64/bin/mintty.exe -i /Cygwin-Terminal.ico \
> --position @3 --position 715,660 --size 80x24 /bin/tcsh &
>
> Within the last 6 months or so, about 2-3 of them would hang and either mintty/tcsh would not start. I put a "sleep 1" in between each invocation and that seemed to take care of it.
>
> With the latest cygwin update, about 8 of them just hang even with the sleep 1. I put in a "sleep 2", and now everything is coming up again.
>
> Not sure if this is a mintty or tcsh issue, but just wondering if others are seeing this before I start trying to debug this.
I can reproduce such behaviour with /bin/bash (easy cross-check), and in 
fact the shell is running in that case (easy test via `echo > .log`), so 
I have a vague and unpleasant suspicion it might in fact be related to 
mintty although I have no idea how that would happen. To be analysed.
Thomas