Patent ReferencesDistributed file access structure lock System for file and record locking between nodes in a distributed data processing environment maintaining one copy of each file lock File lock management in a distributed data processing system Data structures and algorithms for managing lock states of addressable element ranges Method and apparatus for releasing and obtaining shared and exclusive locks User selectable lock regions Method and apparatus for distributed locking of shared data, employing a central coupling facility Data processing system and method for providing notification in a central processor of state changes for shared data structure on external storage File lock management in a distributed data processing system Patent #: 5537645 InventorApplicationNo. 522689 filed on 09/01/1995US Classes:710/200, ACCESS LOCKING707/8, Concurrency (e.g., lock management in shared database)709/229, Network resources access controlling711/152Memory access blockingExaminersPrimary: Harvey, Jack B.Assistant: Etienne, Ario Attorney, Agent or FirmInternational ClassG06F 012/14AbstractA method of and system for optimizing process utilization in a shared resource environment that avoids holding system processes while requests are queued or waiting for system resources. Information about a waiting request is retained in control structures; then the same process that frees a resource is utilized to respond to queued requests for that resource. The effect is to minimize the retention and/or allocation of processes and their associated system resource requirements. The same method is applied to the synchronization of interprocess communications. | |