Method and apparatus for releasing and obtaining shared and excl

Details Method and apparatus for releasing and obtaining shared and excl Method and apparatus for releasing and obtaining shared and excl

1990-06-12

1994-02-15

Lee, Thomas C.

Boots, shoes, and leggings

395425, 395650, 395200, 395600, 3642466, 3642468, 364DIG1, G06F 1314, G06F 1216, G06F 1214

Patent

active

052875210

ABSTRACT:
A data processing method is designed to provide two-mode locks of an exclusive mode lock and a shared mode lock in serializing the access to a shared data list being concurrently processed among processes and release the shared mode lock and simultaneously obtain the exclusive mode lock if no process obtains the lock as a result of releasing the process out of the shared mode lock.

REFERENCES:
patent: 4318182 (1982-03-01), Bachman et al.
patent: 4473133 (1984-09-01), Enriquez et al.
patent: 4562539 (1985-12-01), Vince
patent: 4594657 (1986-06-01), Byrns
patent: 4604694 (1986-08-01), Hough
patent: 4847254 (1989-07-01), Obermarck et al.
patent: 5138713 (1992-08-01), Loten

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