[2022] COMPSCI 711: Parallel and Distributed Computing - Final Exam - Q4 Mutex
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Question 4
Incorrect use of mutexes can lead to deadlock. Provide an example that illustrates a scenario where incorrect usage of mutexes leads to deadlock. Discuss how this usage can be corrected to remove the deadlock.
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The wait operation on a condition variable takes a reference to a mutex as a parameter. Discuss the role of the mutex in this case, explaining why the parameters is necessary for the wait operation
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Covid19 has caused the government to impose restrictions on patron numbers at restaurants: a restaurant can only have one patron per square meter of its indoor space at a time. For example, a restaurant with 10.6 m^2 of in door space can only have 10 patrons indoor at once. A Covid19 modeler would like to simulate restaurant usage by modeling each patron using a thread. You are asked to help the modeler by designing a restaurant object that will follow the government restrictions, using mutexes and condition variables to restrict entry to the restaurant. Use clear pseudo-code.
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