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Coordinated Atomic Actions and System Fault Tolerance

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3. CA <strong>Actions</strong>: A Case StudyOur design uses 12 main CA actions; each action controls one step of the blankprocessing <strong>and</strong> typically involves passing a blank between two devices.A control program was implemented that uses a Java implementation of a distributedCA action support (this scheme makes use of the nested multi-threaded transactionfacilities provided by the Arjuna transaction support system).concurrentthreadsCA action LoadPress1RobotSensorRobot(Arm1)rotate robotextend arm 1retractarm 1Press1SensorPress1move press 1to the middlepositionsynchronizingdrop blankExternalobjectBlankaccess17 February, 2004

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