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Thread Scheduling - Does NPTL support PTHREAD_SCOPE_PROCESS ?

Hi ,

  Does NPTL support PTHREAD_SCOPE_PROCESS ?

  As per Threads FAQ information,
PTHREAD_SCOPE_PROCESS was not 
supported in LinuxThreads.

  Could not find any explicit information whether this
holds 
good for NPTL.

  But from the design document of NPTL it seems the 
PTHREAD_SCOPE_PROCESS value of the "contentionscope" 
attribute is not supported.

  I would appreciate if somebody pours some thoughts
on this.

Cheers
 

From
http://pauillac.inria.fr/~xleroy/linuxthreads/faq.html
============================================================

LinuxThreads does not support the
PTHREAD_SCOPE_PROCESS value of the "contentionscope"
attribute. Why?

With a "one-to-one" model, as in LinuxThreads (one
kernel execution context 
per thread), there is only one scheduler for all
processes and all threads
on the system. So, there is no way to obtain the
behavior of
PTHREAD_SCOPE_PROCESS.



		
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