1:N threading

[Geoffrey C. Speicher]

On Thu, 3 Apr 2003, Daniel Eischen wrote:

> On Thu, 3 Apr 2003, Geoffrey C. Speicher wrote:
> 
> > OK, so we've got 1:N threading (libc_r), 1:1 threading (thr), and M:N
> > threading (KSE).  Each model has its own merit depending on the
> > application.
> > 
> > However, it would still be nice if the 1:N model didn't block the whole
> > process when a thread blocks.  Is there any reason to hold onto a pure
>                               ^ in the kernel.
> 
> > userland implementation of 1:N?  Can libc_r be implemented in terms of
> > KSE?
> 
> Libc_r will go bye-bye.  The KSE library will give you 1:N
> as long as you don't use pthread_setconcurrency() and don't
> create any PTHREAD_SCOPE_PROCESS threads.

Two questions:

  1. You meant PTHREAD_SCOPE_SYSTEM, right?

  2. Does always using PTHREAD_SCOPE_PROCESS give 1:1 threading
     that would also replace libthr?

Geoff