Bit map search by competitive processors

Details Bit map search by competitive processors Bit map search by competitive processors

1988-07-12

1991-02-12

Fleming, Michael R.

Boots, shoes, and leggings

3642455, 364246, 3642543, G06F 1206

Patent

active

049929356

ABSTRACT:
A method and apparatus for performing a bit map search of the allocation state of memory pages in a computing system. A competitive search is accomplished by a pair of dedicated microprocessors, each of which implements a differently optimized search procedure, to find a bit indicating an un-allocated page in the memory. The first processor to find such a bit interrupts the other processor. The first processor then calculates the free page location and informs the computing system of the location. The other processor is responsible for updating the bit map and summary buffers.

REFERENCES:
patent: 4403283 (1983-09-01), Myntti et al.
patent: 4686620 (1987-08-01), Ng
patent: 4761737 (1988-08-01), Duvall et al.

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