Re: thread group comments

[Linus Torvalds]

On 1 Sep 2000, Ulrich Drepper wrote:

> "Andi Kleen" <[EMAIL PROTECTED]> writes:
> 
> > I've been thinking about how to best get rid of the thread manager for
> > thread creation in LinuxThreads.  It is currently needed to do the wait.
> 
> If you get rid of the manager thread (the +1 thread) then you have
> another problem: you cannot send a signal explicitly to this thread
> (to implement pthread_kill).  The PID of this initial thread is now
> used as the PID of the thread group.

Well, that can be solved by having a separate "threadkill()" system call. 

But I'd much rather just have the "n+1" thing. The overhead is basically
nonexistent, and it simplifies so many things.

                Linus

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