Subj : Re: Linux - waitpid portability
To   : comp.programming.threads
From : Frank Cusack
Date : Sun Feb 06 2005 10:05 pm

On 4 Feb 2005 06:32:43 GMT ptjm@interlog.com (Patrick TJ McPhee) wrote:
> In article <febc0840.0502032200.2a4a4268@posting.google.com>,
>  <sreenidishc@gmail.com> wrote:
>
> %  I searched for a solution, and understand that in Linux, the thread
> % which fork()ed the process must reap the process status using
> % waitpid(). This means a major change in the design. Could anybody
> % suggest a way to monitor processes created by other threads in Linux,
> % in a multithreaded application described above?
>
> Do you need to support all versions of Linux? Versions which
> support NPTL (the new posix threads library) won't have this problem.
>
> If you do need to support older versions, you pretty much have
> to reap the process status from the thread that started the
> child process.

How about having the child process write its exit status to a pipe
being read from the reaper thread?

/fc

.