Lock Variable

When a process or thread wants to enter the critical section, it first checks the lock variable to see if it is currently being held by another process or thread. If the lock variable is set, indicating that the critical section is already being executed, the process or thread waits until the lock variable is released by the current holder. Once the lock variable is available, the process or thread acquires the lock by setting the lock variable and enters the critical section. When the process or thread completes the critical section, it releases the lock by resetting the lock variable, allowing other processes or threads to acquire the lock and enter the critical section.

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