System for automatically releasing a dead lock state in a...

Details System for automatically releasing a dead lock state in a... System for automatically releasing a dead lock state in a...

G - Physics

06

F

354/230.8

G06F 9/00 (2006.01) G06F 9/46 (2006.01) G06F 15/00 (2006.01)

Patent

CA 1200911

ABSTRACT OF THE DISCLOSURE Disclosed herein is a system for automatically releasing a dead lock state in a data processing system, wherein a plurality of kinds of tasks selectively use a plurality of common resources. When one task X occupies a resource A and, in this state, the task is to occupy a resource B, if the resource B is occupied by another task Y, the task X is placed in a waiting state. When the task X, is placed in a waiting state based on the occupation of the resource B by the task Y and the task Y, which is to occupy the resource A, is placed in a waiting state based on the occupation of the resource A by the task X, the task X and the task Y are placed in a dead lock state. When the dead lock state is caused between the tasks X and Y, the occupation of the resource A by the task X is released and the processing of the task Y is carried out, and next, the processing of the task X is carried out.

310026

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