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Three tasks T1, T2 and T3. T1 has the highest priority and T3 has the lowest priority. T1: T2: T3: acquire(seml); does some work; release(seml);
Three tasks T1, T2 and T3. T1 has the highest priority and T3 has the lowest priority.
T1: T2: T3: acquire(seml); does some work; release(seml); acquire(sem2); does some work; release(sem2); acquire(seml); does some work; acquire(sem2); does some work; release(sem2); does some work; release(seml); T3 starts first, followed by T2 (before T3 completes "does some work" and after "acquire(sem2)" is completed) and then T1 (before T2 completes the first "does some work" and after "acquire(seml)" is completed). The two "does some work" are highlighted in red. 1) (10 points) Use the priority ceiling protocol to run the three tasks and plot the execution by a Gantt chart. 2) (10 points) Use the priority inheritance protocol to run the three tasks and plot the execution by a Gantt chart. Compare the performance with the previous execution. T1: T2: T3: acquire(seml); does some work; release(seml); acquire(sem2); does some work; release(sem2); acquire(seml); does some work; acquire(sem2); does some work; release(sem2); does some work; release(seml); T3 starts first, followed by T2 (before T3 completes "does some work" and after "acquire(sem2)" is completed) and then T1 (before T2 completes the first "does some work" and after "acquire(seml)" is completed). The two "does some work" are highlighted in red. 1) (10 points) Use the priority ceiling protocol to run the three tasks and plot the execution by a Gantt chart. 2) (10 points) Use the priority inheritance protocol to run the three tasks and plot the execution by a Gantt chart. Compare the performance with the previous execution
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