Appeal No. 95-1544
Application 08/003,602
This is a decision on appeal from the final rejection
of claims 10 through 20, constituting all the claims in the
application.
The invention is directed to a method of executing a
special section of code, in a computer operating system, that
must be completed without interruption by a page fault during
execution. The nature of the method is apparent from a review of
representative independent claim 10, reproduced as follows:
10. A method of executing a special section of code on
an operating system of a computer system having an operating
system, assigned storage, and memory references in secondary
storage, wherein the special section of code performs a series of
operations that must all be completed without interruption by a
page fault during execution, thereby requiring all memory
references to be in assigned storage at one time, comprising:
executing said special section of code on said
operating system including requesting memory references and
determining if a requested memory reference is not available in
said assigned storage;
interrupting said executing the special section of code
when it is determined that a requested memory reference is not
available in said assigned storage;
prior to retrieving the unavailable memory reference
from said secondary storage, undoing operations carried out by
the special section of code so that substantially no executed
fragments of the special section of code are in existence;
locating the unavailable memory reference in said
secondary storage, retrieving the unavailable memory reference
and writing the unavailable memory reference to said assigned
storage; and
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