METHOD AND APPARATUS FOR COMMUNICATION OF MESSAGE DATA USING SHARED QUEUES

A method and apparatus for communicating message data between a plurality of subsystems (201, 202, 301, 302, 303, 404, 406, 408) in the form of distributed resource managers. The subsystems are coupled together through a coupling means (206, 306, 410) with a shared memory with at least one shared queue (308, 414) in the shared memory. Access to the shared queue (308, 414) is available from each of the coupled subsystems and message data can be communicated between the subsystems via the shared queue (308, 414). Each subsystem has a long running process (304) checking the shared queue for messages for that subsystem.