TASK SCHEDULING METHOD
PURPOSE:To continuously give the executing right to a specific task by referring to a settable/deletable circulation schedule suppression flag provided to a task control block at interruption of a task and selecting the schedule order. CONSTITUTION:Each task 1 has a control block TCB 2, and the TCB...
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Sprache: | eng |
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Zusammenfassung: | PURPOSE:To continuously give the executing right to a specific task by referring to a settable/deletable circulation schedule suppression flag provided to a task control block at interruption of a task and selecting the schedule order. CONSTITUTION:Each task 1 has a control block TCB 2, and the TCB 2 controls the attribute and the state of the task 1. Furthermore the priority 3 and a circulation schedule suppression flag 4 are provided to each task 1. When it is required to give the continuous executing right to the task 1, the flag 4 is set to the TCB 2. The flag 4 is referred to by an operating system when the tasks are switched to each other. Then it is decided that the corresponding task requests the continuous executing right as long as the flag 4 is set. Then the task under execution is connected to an execution queuing list so that the task is selected with the highest preference. Thus a specific task continuously is executed. |
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