System and method for controlling device access

摘要

A system, computer-implemented method, and a computer program product for regulating control of a slave device on a communications bus includes monitoring for a request for control of the slave device by a master device. Control of the slave device is granted to the master device. Control of the slave device is relinquished by the master device after the occurrence of a relinquishment event.

主权项

1. A method of regulating control of a slave device on a communications bus comprising:
monitoring for requests for control of the slave device by a plurality of master devices; granting control of the slave device to one of the plurality of master devices; and relinquishing control of the slave device by the one of the plurality of master devices after the occurrence of a relinquishment event, wherein the relinquishment event is an expiry of a control timer during which time the one of the plurality of master devices has control of the slave device, wherein the control timer prevents a failed master device from indefinitely retaining control of the slave driver, wherein the failed master device is unable to relinquish control of the slave device if the failed master suffered a failure while in control of the slave device.