Re: linux-kernel-digest V1 #4149
cd_smith@ou.edu
Fri, 16 Jul 1999 09:14:49 -0500 (CDT)
On Fri, 16 Jul 1999, Khimenko Victor wrote:
> They are related, but not "related enough" ! It's exactly why LinuxThreads are
> so slow :-(( `Any thread in the process can do the equivalent of waitpid for
> any other thread in the process. Linux doesn't allow that; you can only wait
> for a task that you yourself spawned (unless you are init). The workaround is
> to make all the threads children of the "manager". It waits for them and
> passes back exit statuses to the threads calling pthread_join.'
Somehow I doubt that an extra IPC every time a thread exits is "the
reason" that LinuxThreads are slow... Have any data to back that up? It
is a kludge, but it doesn't really hurt anything too much.
Chris Smith <cd_smith@ou.edu>
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