Re: fork and pthreads

[Doug McNaught]

[e-mail] writes:

> I am having a strange problem.
> 
> I have a big daemon program to which I am trying to add multi-threading.
> 
> At the begining, after some sanity check, this program does a double fork to
> create a deamon.
> 
> After that it listens for the client on the port. Whenever the client
> connects, it creates a new thread using
> pthread-create.
> 
> The problem is, the thread (main thread) calling pthread-create hangs
> indefinetely in __sigsuspend. The newly created thread however, runs
> normally to completion.

Just a guess--are you calling setsid() to establish a new session?
Omitting this *might* cause signal-delivery problems in pthreads.

-Doug