System for managing interprocessor common memory

Details System for managing interprocessor common memory System for managing interprocessor common memory

1989-03-29

1993-08-03

Bowler, Alyssa H.

Boots, shoes, and leggings

395600, 364DIG1, 3642455, 364246, 3649601, 36523003, G11C 700, G06F 1200, G06F 1206

Patent

active

052337014

ABSTRACT:
A system for managing an interprocessor common memory in a multiprocessor system includes a memory block pool and a management table. The memory block pool is obtained by chaining N memory blocks of segmented memory blocks in the common memory by using two Queue Control Blocks ("QCBs") respectively assigned to the processors in opposite directions. The management table is constituted by a common memory block total count N required to manage the memory block pool, a memory block count b.sub.X(modN) (where X is 1 or 2) fetched by each of the processors, and a memory block count c.sub.X(modN) (where X is 1 or 2) which can be fetched at once. Each processor has a semaphore function for realizing means for asynchronously fetching e.sub.Y memory blocks from a start of a QCB.sub.Y when it is determined by using data of the management table that a condition that at least one memory block is always present in the memory block pool is satisfied, and means for asynchronously returning memory blocks to the start of the QCB.sub.Y.

REFERENCES:
patent: 4149239 (1979-04-01), Jenkins et al.
patent: 4423480 (1983-12-01), Bauer et al.
patent: 4435762 (1984-03-01), Milligan et al.
patent: 4476524 (1984-10-01), Brown et al.
patent: 4571674 (1986-02-01), Hartung
patent: 4604694 (1986-08-01), Hough
patent: 4783730 (1988-11-01), Fischer
patent: 4956771 (1990-09-01), Neustaedter
IBM-TDB vol. 28, No. 4; "Dynamic Storage Pool Manager" pp. 1684-1686--Sep. 1985.
IBM-TDB vol. 18 No. 7--"Main Storage Allocation Method" by T. Sawyer pp. 2321-2323--Dec. 1975.

Affiliated with

Also associated with

Rating

System for managing interprocessor common memory does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for managing interprocessor common memory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for managing interprocessor common memory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2278832