Re: cmake hanging

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Tue, Jun 09, 2020 at 11:22:27PM +0000, Andrew Doran wrote:
> On Sat, Jun 06, 2020 at 09:25:55PM +0200, Joerg Sonnenberger wrote:
> 
> > On Sat, Jun 06, 2020 at 06:45:03PM +0100, Chavdar Ivanov wrote:
> > > On Sat, 6 Jun 2020 at 18:43, Chavdar Ivanov <ci4ic4%gmail.com@localhost> wrote:
> > > >
> > > > Hi,
> > > >
> > > > I got another cmake hang during pkg_rolling-replace today, while
> > > > building misc/kdepimlibs4, trace as follows:
> > > 
> > > Just to mention that after I quit gdb and detached from the process it
> > > continued and completed the build . . .
> > 
> > Right, that's the bug in the mutex wakeup handling.
> 
> Hmm.  From what I've seen I'm starting to suspect that it's a signal handler
> screwing up a waiting thread underneath it, by playing with threads stuff.

I've been wondering if we actually want to have SA_RESTART behavior for
_lwp_park.

Joerg