公开(公告)号：JPH0336642A

公开(公告)日：1991-02-18

申请号：JP16586890

申请日：1990-06-26

Applicant: IBM

Inventor： MAAGARETSUTO AN DONGU ,  RICHIYAADO KENTO TORAIBAA

IPC: G06F12/02 ,  G06F9/46 ,  G06F9/50

Abstract: PURPOSE: To perform the computer system resource management adapted to the condition change by providing a stage where an extended pool including additional resources to add it to a master pool and, according to circumstances, a stage where the extended pool is deleted to reduce the master pool. CONSTITUTION: Extended pools including additional resources are generated and are chained to the master pool. They are assigned to and released from the master pool in accordance with their use or disuse in a process, and released resources in an active extended pool are transferred to the master pool, and released resources in a released extended pool are transferred to an extended pool. If the released extended pool includes all of resources belonging to it at the time of returning unassigned resources belonging to the released extended pool from the master pool to an extended pool, the released extended pool is deleted. A minimum instruction of IBM 370 compare-double-swap is used to peculiarly serialize stages of assignment and release from the first chain toward the chain of an objective pool with respect to control elements of resources, and they are transferred between master and extended pools, thereby effectively managing the resources.