On Feb 26 00:01, Ken Brown wrote: > On 2/25/2019 3:20 PM, Corinna Vinschen wrote: > > On Feb 25 11:03, Corinna Vinschen wrote: > >> On Feb 25 03:21, Ken Brown wrote: > >>> On 2/24/2019 9:23 PM, Ken Brown wrote: > >>>> On 2/24/2019 2:52 PM, Corinna Vinschen wrote: > >>>>> On Feb 24 20:09, Corinna Vinschen wrote: > >>>>>> On Feb 24 19:55, Corinna Vinschen wrote: > >>>>>>> On Feb 24 17:27, Ken Brown wrote: > >>>>>>>> I'm seeing sporadic errors like this on 64-bit Cygwin when I first > >>>>>>>> start emacs: > >>>>>>>> > >>>>>>>> 0 [main] emacs-X11 864 C:\cygwin64\bin\emacs-X11.exe: *** > >>>>>>>> fatal error in > >>>>>>>> forked process - Can't recreate shared timerfd section during fork! > >>>>>>>> 0 [main] emacs 860 dofork: child 864 - died waiting for > >>>>>>>> dll loading, errno 11 > >>>>>>>> > >>>>>>>> If I exit and restart, everything will be fine almost every time. > >>>>>>> > >>>>>>> I think I see where the thinko was here. Can you try this? > >>>>[...] > >>>> It's better, but not completely fixed. At the moment I'm testing 32-bit > >>>> only, > >>>> [...] > >>> I withdraw that statement. After further tries, it's back to happening > >>> every time. > >>> > > [...] > > I pushed a patch and uploaded new developer snapshots to > > https://cygwin.com/snapshots/ > > The x86 fork problem seems to be fixed. I started emacs several times and > listed directories without any failure.
Thanks for testing! > I did get the following, however, during one of the trials (while emacs was > idle): > > 1 [main] emacs 246 C:\Users\kbrown\src\emacs\i686-emacs26\src\emacs.exe: *** > fatal error - CreateThread failed for pipesel - 0x0<0x0>, Win32 error 8 It's hard to imagine how this is related. CreateThread fails due to memory problems?!? A timerfd does not use a lot of resources, just a 96 bytes struct on the cygheap, a single page shared memory region, and a thread per timerfd. This include dup'ed descriptors which share the timerfd resources with their sibling descriptors. Corinna -- Corinna Vinschen Cygwin Maintainer
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