Appeal No. 2002-0792
Application 08/801,646
The Examiner states that Anderson does not expressly teach a
shared arena within the memory, wherein the shared arena includes
a register save area and selecting includes the step of reading
register context associated with the selected thread from one of
the plurality of register save areas. See page 3 of the answer.
The Examiner relies on Polychronopoulos for this teaching. The
Examiner points us to page 7 and page 9 of Polychronopoulos.
Upon our review of Polychronopoulos, we find that in section
3 titled “Scheduler-Kernel Interfaces” found on page 6,
Polychronopoulos teaches that in order to properly support the
user-level scheduling model, a set of communication points
between the user-level scheduler and the kernel must be defined.
Polychronopoulos then further states that these interfaces will
allow the user-level scheduler to request/release processor
resources and reorder run queues. Polychronopoulos then further
states that the reference only defines the interface semantic and
does not specify the implementation of the communication
mechanism. Polychronopoulos then suggests that some
implementations may choose to use a block of shared memory used
between the user-level scheduler and the kernel as the
communication venue while other implementations may be an
explicit upcall mechanism as described in Anderson. We agree
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