Explain concurrent sharing, Computer Engineering

Assignment Help:

Explain Concurrent Sharing

Here a number of programs that may share a file simultaneously. While this is the case, it is necessary to prevent mutual interference among them. There are three types of concurrent sharing:

1. Immutable files: If a file is shared in immutable mode, none of the sharing programs can alter it. This mode has the benefit that sharing programs are independent of one another.

2. Single image immutable files: Here the modifications made by one program are instantaneously visible to other programs. The UNIX file system employs this file-sharing mode.

3. Multiple image mutable files: Here several programs can concurrently update the shared file. Each updating program makes a new version of the file that is different from the version made by concurrent programs.

This sharing mode can just only be used in applications in which concurrent updates and the existence of several versions are meaningful.


Related Discussions:- Explain concurrent sharing

Write hit policies, Write Hit Policies: Write through o   Upd...

Write Hit Policies: Write through o   Update next level on every write o   Cache is always clean o   A lots of traffic to next level (mostly write) Write

What is dynpro, What is dynpro?What are its components ? A dynpro (Dyna...

What is dynpro?What are its components ? A dynpro (Dynamic Program) having of a screen and its flow logic and controls exactly single dialog steps. The dissimilar components

Projects on cluster computing, Some famous projects on cluster computing ar...

Some famous projects on cluster computing are as follows: High Net Worth Project: (developed by: Bill McMillan, JISC NTI/65 - The HNW Project, University of Glasgow, The prim

Setjmp and longjmp, How does throwing and catching exceptions differ from u...

How does throwing and catching exceptions differ from using setjmp and longjmp? Ans) The throw operation calls the destructors for automatic objects instantiated as entry to th

What is a semaphore, What is a semaphore? Semaphore: It is a protecte...

What is a semaphore? Semaphore: It is a protected variable or abstract data type that constitutes the typical method for restricting access to shared resources as shared memo

Find out how many words can be formed from daughter, Find out how many word...

Find out how many words can be formed out of the letters of the word DAUGHTER such that (i)  The vowels are all time together. (ii)  The vowels occupy even places.   Ans:

Salient features of direct addressing mode, Q. Salient features of direct a...

Q. Salient features of direct addressing mode? A number of salient points about this technique are: This scheme offers a limited address space since if address field has

Define a register, Define a register. Ans:  Register:   A register...

Define a register. Ans:  Register:   A register contain a group of flip-flops and gates which effect their transition. The flip flops hold the binary information and the g

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