The concurrent program and the full question is provided in the imageDevelop proof outlines for the two processes. Demonstrate that the proofs of the processes are interference-free. Then use the proof outlines and the method of exclusion of configurations in Section 2.8 to show that s, and s, cannot execute at the same time and that the program is deadlock-free. (Hint: You will need to introduce auxiliary variables to the program and proof outlines. These variables should keep track of the location of each process.) (b) What scheduling policy is required to ensure that a process delayed at its first await statement will eventually be able to proceed? Explain. 902.32 Consider the following concurrent program:int s = 1;process}while (true) {(await (s 0) 8 8-1;)S₁;8+1;)}foo [i= 1 to 2] {=Chapter 2 Processes and SynchronizationAssume s, is a statement list that does not modify shared variable s.(a) Develop proof outlines for the two processes. Demonstrate that the proofs ofthe processes are interference-free. Then use the proof outlines and the methodof exclusion of configurations in Section 2.8 to show that s, and s₂ cannotexecute at the same time and that the program is deadlock-free. (Hint: You willneed to introduce auxiliary variables to the program and proof outlines. Thesevariables should keep track of the location of each process.)(b) What scheduling policy is required to ensure that a process delayed at its firstawait statement will eventually be able to proceed? Explain.

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Description: The concurrent program and the full question is provided in the imageDevelop proof outlines for the two processes. Demonstrate that the proofs of the processes are interference-free. Then use the proof outlines and the method of exclusion of configur

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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

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The concurrent program and the full question is provided in the image

Develop proof outlines for the two processes. Demonstrate that the proofs of the processes are interference-free. Then use the proof outlines and the method of exclusion of configurations in Section 2.8 to show that s, and s, cannot execute at the same time and that the program is deadlock-free. (Hint: You will need to introduce auxiliary variables to the program and proof outlines. These variables should keep track of the location of each process.) (b) What scheduling policy is required to ensure that a process delayed at its first await statement will eventually be able to proceed? Explain.

90
2.32 Consider the following concurrent program:
int s = 1;
process
}
while (true) {
(await (s 0) 8 8-1;)
S₁;
8+1;)
}
foo [i= 1 to 2] {
=
Chapter 2 Processes and Synchronization
Assume s, is a statement list that does not modify shared variable s.
(a) Develop proof outlines for the two processes. Demonstrate that the proofs of
the processes are interference-free. Then use the proof outlines and the method
of exclusion of configurations in Section 2.8 to show that s, and s₂ cannot
execute at the same time and that the program is deadlock-free. (Hint: You will
need to introduce auxiliary variables to the program and proof outlines. These
variables should keep track of the location of each process.)
(b) What scheduling policy is required to ensure that a process delayed at its first
await statement will eventually be able to proceed? Explain.

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To prove that the concurrent program is interference-free and deadlock-free, we need to demonstrate that the processes cannot execute at the same time and that the program does not contain any circular wait conditions.

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