INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD

• Main Authors: KIYOTA, Yusaku, OKADA, Takashi, UEHARA, Go
• Format: Patent
• Language: English
• Published: 30.05.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

An information processing system and method effectively prevents data loss and the like caused by the duplicate execution of commands. A controller writes a command for a device to a corresponding command queue. The device fetches the command from the corresponding command queue. The command includes a field for storing fetch information which indicates whether the command has been fetched. The device refers to a value of the fetch information of the fetched command. If the value of the fetch information is a first value indicating that the command has not been fetched, the device executes the command after updating the value of the fetch information of the command which is stored in the corresponding command queue to a second value indicating that the command has been fetched. If the value of the fetch information is the second value, the device executes predetermined error processing instead of executing the command.