2013/6/5 Ludovic Courtès <[email protected]> > [...] > > > Version: 1:7.1-8ubuntu0.12.04.1 > > [...] > > >> Could you check whether the problem still occurs with Guile 2.0.9? > >> > > It does (at least when linked against the same garbage collector) > > The documentation of ‘sleep’ is: > > - Scheme Procedure: sleep i > Wait for the given number of seconds (an integer) or until a signal > arrives. The return value is zero if the time elapses or the > number of seconds remaining otherwise. > > I’m pretty sure that if you check its return value, you’ll notice that > it behaves as documented. Can you confirm? > > What happens here is that libgc uses signals for stop-the-world > collections, and (gc) certainly does with the libgc version you’re > using. > > ‘sleep’ calls select(2), which in your case presumably returns > prematurely with EINTR. You should be able to confirm this hypothesis > by running Guile with: > > strace -f -e select guile > > (Note that the problem doesn’t occur with libgc 7.2, presumably because > it uses a different strategy.) > > Yes, you're right. Sleep does behave as documented, but I didn't expect that gc might raise a signal. Sorry for the confusion. However, I replaced the libgc.so with a newly compiled one (7.2d) and nothing changed, so I guess that the reason might be more casual
Thanks a lot
