Re^2: open3 hangs

and thanks for your proposal. I have modified my code to use the old-fashioned pipe/fork/exec procedure showing me that open3 actually is not my problem. Instead fork blocks.

I did some more investigation and found that forking from a thread can be tricky because one may have to deal with locking issues (fork seems to clone all threads). Now I'm looking for a way to cleanly fork from a (Perl) thread and exec afterwards. Any ideas?

Kind regards,

Stephan

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Re^3: open3 hangs by salva (Canon) on Feb 20, 2009 at 10:18 UTC
Instead of forking, try creating a new thread and launching the child via `system`... maybe your libc `system()` call will use a different aproach that doesn't need to lock other threads, for instance, a `vfork` based one.	[reply] [d/l] [select]
Re^4: open3 hangs by stephan_a (Novice) on Feb 20, 2009 at 10:52 UTC
Hmmm… The documentation (perlfunc) says: Does exactly the same thing as "`exec LIST`", except that a fork is done first, and the parent process waits for the child process to complete.	[reply] [d/l]