IMS/VS Data Sharing Enhancements (GHT Update Delay)
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
This article describes a method and apparatus for operating a computing system to support sequential processing within a block level data sharing environment. The system includes (1) a resource lock manager (IRLM) having resource hash table (RHT) entries providing private-use flags on global locks hashing into corresponding global hash table (GHT) entries and (2) pass the buck (PTB) communications means for synchronizing the GHT entries in at least one other resource lock manager. The system is operated to detect the release of a last global lock on a resource hashing into a given GHT entry, and to delay the reset of the private use flag in the RHT entry corresponding to the given GHT entry until it is time to send a buck to the other resource lock manager.