Explain about deadlocks, Operating System

Assignment Help:

Q. Explain about Deadlocks?

Deadlocks

for (int i = 0; i < n; i++) {

// first find a thread that can finish

for (int j = 0; j < n; j++) {

if (!finish[j]) {

boolean temp = true;

for (int k = 0; k < m; k++) {

if (need[j][k] > work[k])

temp = false;

}

if (temp) { // if this thread can finish

finish[j] = true;

for (int x = 0; x < m; x++)

work[x] += work[j][x];

}

}

}

}

At present there are two resources available. It is an system is in an unsafe state as process P1 could complete thereby freeing a total of four resources. But we can't guarantee that processes P0 and P2 can complete. Nevertheless it is possible that a process may release resources before requesting any further. For instance process P2 could release a resource thereby increasing the total number of resources to five. This permit process P0 to complete which would free a total of nine resources thereby allowing process P2 to complete as well.


Related Discussions:- Explain about deadlocks

What is external fragmentation?, What is external fragmentation? As pro...

What is external fragmentation? As process are removed from and loaded to the memory free memory space is bracken into pieces .external fragmentation take place when enough mem

Management, what is secondary storage management

what is secondary storage management

Activities of operating system-secondary-storage management, Q. What are th...

Q. What are the three main activities of an operating system in regard to secondary-storage management? Answer: 1) Free-space management 2) Storage allocation 3) Disk

General graph directory system in shell sort, we need an information about ...

we need an information about the different graph directory systems in detail by using shell sort . we also application part of directory systems in practical life. please help us i

What is a file, Question 1 What is a file? Write down the operations on fi...

Question 1 What is a file? Write down the operations on files Question 2 What do you mean virtual machine? Write down the application of virtual machine Question 3 What

Explain fixed partitioning, Explain fixed partitioning. Partitioning ar...

Explain fixed partitioning. Partitioning are the simpler techniques that don't involve virtual memory. Partitioning has been used in numerous variations in operating systems.

What is dispatch latency, What is dispatch latency? The time taken by t...

What is dispatch latency? The time taken by the dispatcher to stop one process and begin another running is known as dispatch latency.

Explain how protection is provided for the hardware resource, Explain how p...

Explain how protection is provided for the hardware resources by the operating system. Dual mode operation Sharing system resources needs operating system to make sure

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd