Deadlock handling in os

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                                Deadlock handling

Deadlock handling method is used to solve the problem of deadlock.
There are four method used in deadlock handling.

1.  Prevantion     

  • Prevantion  means design such a system which violet at least one of four neccesory conditions of deadlock.
  • This ensure that the system remains free from deadlock.

2.  Avoidence 

  • This strategy involves maintaining a set of data using which a decision is made whether to entertain the new request or not.
  • If entertaining the new request causes the system to move in an unsafe state, then it is discarded.
  • This strategy requires that every process declares its maximum requirement of each resource type in the beginning.
  • The main challenge with this approach is predicting the requirement of the processes before execution.
  • Banker’s Algorithm is an example of a deadlock avoidance strategy.

   3. Deadlock detection and recovery

  • This strategy involves waiting until a deadlock occurs.
  • After deadlock occurs, the system state is recovered.
  • The main challenge with this approach is detecting the deadlock.

  4. Deadlock ignorence 

  • This strategy involves ignoring the concept of deadlock and assuming as if it does not exist
  • This strategy helps to avoid the extra overhead of handling deadlock.

  • Windows and Linux use this strategy and it is the most widely used method.
     It is also called as Ostrich approach.
  • To gain better understanding about Deadlock Handling Strategies, follow our website and join my FB page for more realted topic.

     Thank you viewers
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