## What is dining philosophers problem in operating system?

The dining philosophers problem states that there are 5 philosophers sharing a circular table and they eat and think alternatively. A hungry philosopher may only eat if there are both chopsticks available. Otherwise a philosopher puts down their chopstick and begin thinking again.

### Which kind of problems occur in dining philosopher?

The dining philosopher’s problem is the classical problem of synchronization which says that Five philosophers are sitting around a circular table and their job is to think and eat alternatively. A bowl of noodles is placed at the center of the table along with five chopsticks for each of the philosophers.

#### What is deadlock explain dining philosopher problem?

The dining philosophers problem describes a group of philosophers sitting at a table doing one of two things – eating or thinking. Deadlock could occur if every philosopher holds a left chopstick and waits perpetually for a right chopstick (or vice versa).

What is the purpose of dining philosophers?

In computer science, the dining philosophers problem is an example problem often used in concurrent algorithm design to illustrate synchronization issues and techniques for resolving them.

How does dining philosopher problem help avoiding deadlock?

Strategy: Every philosopher must request each of their (shared) chopsticks from a waiter, who may refuse the request at first in order to avoid a deadlock. For convenience, we assume that all philosophers request their left chopstick first, then their right chopstick.

## What is dining philosopher problem and how can it be solved using mutex locks?

To address this problem, we may consider each chopstick as a shared item protected by a mutex lock. Each philosopher, before he can eat, locks his left chopstick and locks his right chopstick. If the acquisitions of both locks are successful, this philosopher now owns two locks (hence two chopsticks), and can eat.

### Which of the following solution can avoid deadlock in the dining philosophers problem?

ensure that all philosophers pick up the left fork before the right fork. ensure that all philosophers pick up the right fork before the left fork.

#### How can we avoid the deadlock in the dining philosophers problem?

Allow only four philosophers to sit at the table. That way, if all the four philosophers pick up four chopsticks, there will be one chopstick left on the table. So, one philosopher can start eating and eventually, two chopsticks will be available. In this way, deadlocks can be avoided.

What is producer-consumer problem in operating system?

The producer consumer problem is a synchronization problem. There is a fixed size buffer and the producer produces items and enters them into the buffer. The consumer removes the items from the buffer and consumes them. So the buffer should only be accessed by the producer or consumer at a time.

Which of the following leads to feasible solution to the dining philosophers problem that avoids deadlock?

Explanation: In Dining Philosophers Problem it ensure that one particular philosopher picks up the left fork before the right fork, and that all other philosophers pick up the right fork before the left fork which avoids the deadlock condition.

## What is the eating utensil of choice for the Dining Philosophers?

A fork is placed in between each philosopher, and as such, each philosopher has one fork to his or her left and one fork to his or her right. As spaghetti is difficult to serve and eat with a single fork, it is assumed that a philosopher must eat with two forks.

### How can we prevent deadlock in dining philosophers problem?

Dining Philosophers Problem in Operating System (OS) August 21, 2019 Dining Philosophers in Operating System Dining Philosophers essentially is a process synchronization example and ​helps understanding how we can simultaneously utilise common resources of multiple processes together.

#### How do philosophers eat?

Consider there are five philosophers sitting around a circular dining table. The dining table has five chopsticks and a bowl of rice in the middle as shown in the below figure. At any instant, a philosopher is either eating or thinking. When a philosopher wants to eat, he uses two chopsticks – one from their left and one from their right.

What is designdining philosophers?

Dining Philosophers essentially is a process synchronization example and ​helps understanding how we can simultaneously utilise common resources of multiple processes together. Imagine five philosophers sitting around circular table and have a bowl of rice or noodles in the middle and there are five chopsticks on the table.

Why does the dining philosopher put down his chopstick?

In case if both immediate left and right chopsticks of the philosopher are not available then the philosopher puts down their (either left or right) chopstick and starts thinking again. The dining philosopher demonstrates a large class of concurrency control problems hence it’s a classic synchronization problem.