Explain about deadlock prevention, Operating System

Assignment Help:

Explain about deadlock prevention?

In order for the occurrence of deadlock, the four conditions like mutual exclusion, hold and wait, no pre-emption and  circular wait must happen. By ensuring that one of these conditions cannot hold, we can stop the occurrence of deadlock.

Mutual exclusion

It must hold for non-sharable resources. For example a printer cannot be simultaneously shared by several processes. Sharable resources do not need mutually exclusive access, and therefore cannot be include in deadlock. Read-only files are a good example of a sharable resource.

Hold and wait

To ensure that hold and wait condition never happens in the system, we must guarantee that, whenever a process requests a resource, it does not hold any other resources. The protocols used are

1. Every process is to be request and be allocated all its resources before it begins execution.

2. Permits a process to request some resources only when the process has none (no other resources).

 


Related Discussions:- Explain about deadlock prevention

Define lru page replacement policy, Define ‘LRU’ page replacement policy ...

Define ‘LRU’ page replacement policy LRU is Least Recently Used page replacement policy.

Aggregate planning, Prepare a report that motivates alternatives reactive s...

Prepare a report that motivates alternatives reactive strategies that can be used by wind Mud clothing factory

Differences between symmetric and asymmetric multiprocessing, Describe the ...

Describe the differences between symmetric and asymmetric multiprocessing. What are three advantages and one disadvantage of multiprocessor systems? Symmetric multiprocessing t

Quantum settings denoted by q, Determining the time quantum for a job is a ...

Determining the time quantum for a job is a critical task. Given the assumptions that the average switching time between processes is s, and the average amount of time an I/O bo

What is starvation?, What is starvation? A main problem related to dead...

What is starvation? A main problem related to deadlock is starvation. Starvation is the circumstances where process waits indefinitely within the semaphore. Indefinite blocking

List the various file attributes, List the various file attributes. A f...

List the various file attributes. A file has particular other attributes, which vary from one operating system to another, but typically having of these:  Name, identifier, typ

Explain page traffic, The term ‘page traffic’ explains   Page traffic’...

The term ‘page traffic’ explains   Page traffic’ explains the movement of pages in and out of memory.

Bind a real-time thread to an lwp, Q. Suppose an operating system maps user...

Q. Suppose an operating system maps user-level threads to the kernel utilizing the many-to-many model where the mapping is done through the use of LWPs. In addition the system allo

Capability lists are typically kept within the address space, Q. Capabilit...

Q. Capability lists are typically kept within the address space of the user. How does the system make sure that the user cannot modify the contents of the list? Answer: An ap

Convert the hex to binary, Convert the following from hex to binary and dra...

Convert the following from hex to binary and draw it on the memory map.     RAM    = 0000 -> 00FF     EPROM = FF00  -> FFFF Answer:   0000  0000 0000  0000 (0)    RAM sta

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