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Patent Title: Message queue processing among cooperative processors having significant speed differences

Assignee: IBM
Patent Number: US5224215
Issue Date: 06-29-1993
Application Number:
File Date:07-13-1990

Abstract: Processors communicatively attaching a storage sub-system and which place a message on a queue no longer have to wait on a queue lock set by another processor or sub-system dequeuing a message. This is realized by use of a double ended linked list or queue of messages having an isolation/reference point wherein an enqueuing end of the list is lockable and accessible independently from the dequeuing end of the list. The locking primitive may be of the multi-processor lock synchronizing atomic type such as TEST AND SET.


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