RECOVERY FROM DEADLOCK Recovery From Deadlock: -When a detection algorithm determines that a deadlock exists, then the system or operator

## Safety Algorithm & Resource-Request Algorithm

Safety Algorithm The algorithm for finding out whether or not a system is in a safety algorithm can be described

## Banker’s algorithm

Banker’s algorithm The Banker’s algorithm is a resource allocation & deadlock avoidance algorithm developed by Edsger Dijkstra that test for

DEADLOCK PREVENTION Deadlock Prevention may be prevented by denying any one of the conditions. Prevent deadlock prevention by resource scheduling

## Resource Allocation Graph

Resource-Allocation Graph Deadlocks can be described in terms of a directed graph called a system resource-allocation graph. This graph consists

Deadlocks A set of the process is in a deadlocks state if each process in the set is waiting for

## Monitors in Operating System

Monitors in Operation System Another high-level synchronization construct is the monitor type. A monitor is characterized by a set of

## The Dining Philosophers Problem

The Dining Philosophers Problem Consider five philosophers who spend their lives thinking and eating. The philosophers share a common circular

The Readers- Writers Problem The readers-writers problem shows, A data object (such as a file or record) is to be

## Classic Problems of Synchronization

Classic Problems of Synchronization Classic Problems of Synchronization, We present a number of different synchronization problems as examples for a

## Binary Semaphore

Binary Semaphore The semaphore construct described in the previous sections is commonly known as a counting semaphore, since its integer

## Semaphore Implementation

Semaphore Implementation The main disadvantage of the mutual-exclusion solutions and of the semaphore definition given here is that they all

## Semaphore and It’s Uses

Semaphores The solutions to the critical-section problem presented before are not easy to generalize to more complex problems. To overcome

## Synchronization Hardware

Synchronization Hardware As with other aspects of software, hardware features can make the programming task easier and improve system efficiency.

## Peterson’s solution

Peterson’s solution:- Peterson’s solution is a software based solution to the critical section problem. Consider two processes P0 and P1.

## The Critical Section Problem

The critical section problem Consider a system consisting of n processes {Po, P1, …, Pn-1). Each process has a segment