Appeal No. 97-2696
Application 08/231,657
upon each allocation of an available address, examining a
number of entries in the page table, which number is less than
the total number of entries in the table, to determine whether
the entries have been identified as no longer active;
removing the entries from the table which have been
determined to be no longer active, and maintaining a list of
the addresses associated with the entries being removed; and
transferring the list of addresses associated with
removed entries to the list of allocatable addresses.
17. A system for managing memory in a computer,
comprising:
means for allocating ranges of logical addresses to
provide access to the memory of the computer;
a page table containing entries which map allocated
logical addresses to physical addresses for the memory;
means for indicating that a range of logical addresses
has been deallocated;
means responsive to the occurrence of a predetermined
event for examining a limited number of the entries in the
page table to determine whether they are associated with an
address that has been deallocated, and for removing each such
entry from the page table; and
means for indicating that addresses whose entries have
been removed from the page table are available for further
allocation.
The references relied on by the examiner are:
Perazzoli, Jr. (Perazzoli) 5,101,485 Mar. 31, 1992
-3-
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