公开(公告)号：DE3781577T2

公开(公告)日：1993-04-08

申请号：DE3781577

申请日：1987-01-02

Applicant: IBM

Inventor： CRUS RICHARD ANTHONY ,  HADERLE DONALD JAMES ,  HERRON HOWARD WINSTON

IPC: G06F9/46 ,  G06F12/00

Abstract: A method utilizing a coordinated pair of locking limits for managing concurrency and lock granularity tradeoff relations. A first limit is placed on the number of small granularity locks per resource. A second limit is placed on the number of locks assignable to each process. When the first number of small locks is reached, the method withdraws the small locks and grants only one lock to the entire resource (lock escalation). When a process requests an additional lock over the second limit, the lock is refused.

公开(公告)号：DE68916486T2

公开(公告)日：1995-03-16

申请号：DE68916486

申请日：1989-07-12

Applicant: IBM

Inventor： CRUS RICHARD ANTHONY ,  ENGLES ROBERT WILLIAM ,  HADERLE DONALD JAMES ,  HERRON HOWARD WINSTON

IPC: G06F12/00 ,  G06F9/44 ,  G06F17/30

公开(公告)号：DE68916486D1

公开(公告)日：1994-08-04

申请号：DE68916486

申请日：1989-07-12

Applicant: IBM

Inventor： CRUS RICHARD ANTHONY ,  ENGLES ROBERT WILLIAM ,  HADERLE DONALD JAMES ,  HERRON HOWARD WINSTON

IPC: G06F12/00 ,  G06F9/44 ,  G06F17/30 ,  G06F15/40

公开(公告)号：DE3781577D1

公开(公告)日：1992-10-15

申请号：DE3781577

申请日：1987-01-02

Applicant: IBM

Inventor： CRUS RICHARD ANTHONY ,  HADERLE DONALD JAMES ,  HERRON HOWARD WINSTON

IPC: G06F9/46 ,  G06F12/00

Abstract: A method utilizing a coordinated pair of locking limits for managing concurrency and lock granularity tradeoff relations. A first limit is placed on the number of small granularity locks per resource. A second limit is placed on the number of locks assignable to each process. When the first number of small locks is reached, the method withdraws the small locks and grants only one lock to the entire resource (lock escalation). When a process requests an additional lock over the second limit, the lock is refused.