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5. Provide the Need table for the following Processes Process Allocated Maximum R1 R2 R3 R4...
Answer the following question: Process p1 needs to access resources r1, r2, r3, in some order. Process p2 needs to access resources r2, r3, r4, in some order. Which of the access sequences by p1 and p2 would violate an ordered resources policy and could lead to a deadlock? P1: r1, r3, r2 P2: r2, r3, r4 P1: r1, r2, r3 P2: r2, r3, r4 P1: r2, r1, r3 P2: r3, r2, r4 P1: r3, r2, r1 P2: r3, r4,...
A system has five processes P1 through P5 and four resource types R1 through R4. There are 2 units of each resource type. Given that: P1 holds 1 unit of R1 and requests 1 unit of R4 P2 holds 1 unit of R3 and requests 1 unit of R2 P3 holds one unit of R2 and requests 1 unit of R3 P4 requests 1 unit of R4 P5 holds one unit of R3 and 1 unit of R2, and requests...
a. A system has two processes and three identical resources. Each process needs a maximum of two resources. Is deadlock possible? Explain your answer. b. A system has 4 processes, P1 through P4, and 5 types of resources, R1 through R5. Existing resource vector E = (3, 2, 1, 2, 2) Current allocation matrix C = R1 R2 R3 R4 R5 P1 1 1 0 0 0 P2 0 0 1 0 0 P2 1 0 0 20 P4 0...
Please give an explanation for the answers as well. 1. A system has three processes (P1, P2, and P3) and three resources (R1, R2, and R3). There is one instance of RI, two instances of R2, and three instances of R3. PI holds RI and one instance of R3 and is requesting one instance from R2. P2 holds one instance of R3 and is requesting RI and one instance from R2. P3 holds two instances of R2 and one instance...
There are three cooperating processes. They all read data from the same input device. Each process, when it gets the input device, must read two consecutive data, only one process may access the input device at a time (Hint: use mutual exclusion to achieve it). Use semaphores to synchronize. Include declaration and initialization. (SEE example on Canvas – and Video) Answer Both 8&9 There are three cooperating processes. They all read data from the same input device. Each process, when...
Let I represent an execution of init(s), W of wait(s), and S of signal(s). Then, for example, IWWS represents the sequence of calls init(s), wait(s), wait(s), and signal(s) by some processes in an operating system. For each of the following sequences of calls, state the value of s and the number of processes blocked after the last call in the sequence: (b) IS (c) ISSSW (d) IWWWS (e) ISWWWW Each of the following code fragments contains a bug in the...