Deadlock prevention
Denying the necessary conditions
Denying the hold and wait condition can also be done if a process releases the already acquired resource(s) if it fails to acquire the next one.
Later on, it can try the acquisition again.
In the dining-philosopher problem, a philosopher must release the left fork if she/he fails to acquire the right one.
In this solution, starvation and busy waiting can occur.
Aging mechanisms are often used to solve starvation.
To avoid busy waiting, the process should block and be waked up when the resource is released.
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