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Overview The dining - philosophers problem is considered a classic synchronization problem neither because of its practical importance nor because computer scientists dislike philosophers but
Overview
The diningphilosophers problem is considered a classic
synchronization problem neither because of its practical
importance nor because computer scientists dislike philosophers
but because it is an example of a large class of concurrency
control problems.
Consider five philosophers who spend their lives thinking and
eating. The philosophers share a circular table surrounded by
five chairs, each belonging to one philosopher. In the center of
the table is a bowl of rice, and the table is laid with five
single chopsticks Figure When a philosopher thinks, she
does not interact with her colleagues. From time to time, a
philosopher gets hungry and tries to pick up the two chopsticks
that are closest to her the chopsticks that are between her and
her left and right neighbors A philosopher may pick up only
one chopstick at a time. Obviously, she cannot pick up a
chopstick that is already in the hand of a neighbor. When a
hungry philosopher has both her chopsticks at the same time, she
eats without releasing the chopsticks. When she is finished
eating, she puts down both chopsticks and starts thinking again.
Figure The situation of the dining philosophers.
Implementation
Use semaphores to implement the solution of the Dining
Philosophers Problem note:
Instruction: Read the text and do the activity, make the
code stop using deadlock method after all finished
eating. Use c or java.
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