c) In Fig. 3 straight arrows represent scheduler activations, s-shaped symbols represent user-level threads, and the...

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c) In Fig. 3 straight arrows represent scheduler activations, s-shaped symbols represent user-level threads, and the cluster of user-level threads to the right of the pane represents the ready list. At time T1, the kernel allocates the application three processors. On each processor, the kernel upcalls to user-level code that removes a thread from the ready list and starts running it. At time T2 (where, T2 > T1), if the user-level thread (thread 2) blocks in the kernel (assuming that it is doing an I/O), how does the kernel handle this situation, i.e. what steps does the kernel take? At time T3 (where, T3 > T2), if thread 2 unblocks (completes the I/O) and thread 1 completes its' task, how will kernel handle this situation. Show two diagrams (like Fig.3) showing both the scenarios. [3] User level runtime system Add Processor Processors (3) (2) < User Program (1) - Add Add Processor Processor (1) Kernel (2) (3) (4) Fig.3 At Time T1, three processors are allocated to three threads (no more processor is available) (P.T.O) c) In Fig. 3 straight arrows represent scheduler activations, s-shaped symbols represent user-level threads, and the cluster of user-level threads to the right of the pane represents the ready list. At time T1, the kernel allocates the application three processors. On each processor, the kernel upcalls to user-level code that removes a thread from the ready list and starts running it. At time T2 (where, T2 > T1), if the user-level thread (thread 2) blocks in the kernel (assuming that it is doing an I/O), how does the kernel handle this situation, i.e. what steps does the kernel take? At time T3 (where, T3 > T2), if thread 2 unblocks (completes the I/O) and thread 1 completes its' task, how will kernel handle this situation. Show two diagrams (like Fig.3) showing both the scenarios. [3] User level runtime system Add Processor Processors (3) (2) < User Program (1) - Add Add Processor Processor (1) Kernel (2) (3) (4) Fig.3 At Time T1, three processors are allocated to three threads (no more processor is available) (P.T.O)

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Lets consider the given questions in two cases ie Case 1 At time T2 when the userlevel thread thread 2 blocks ans Case 2 At time T3 when the thread 2 unblocks Below explaininganswering bothe the case ... View the full answer