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

Scanf function, How can the maximum field width for a data item be specifie...

How can the maximum field width for a data item be specified within a scanf function? When the program is executed, three integer quantities will be entered from the standard i

Explain message, Differentiate between message switching, packet switching ...

Differentiate between message switching, packet switching and circuit switching Message switching: Recourse computer sends data to switching office that stores the data in

What are the advantages of interviewing, What are the Advantages of Intervi...

What are the Advantages of Interviewing - Opportunity to motivate interviewee to give open and free answers to analyst's questions    -  allows analyst to probe for more f

The variables that are declared outside all functions, The variable that ar...

The variable that are declared outside all the functions are called The variables that are declared outside every functions are known as global variable.

Describe characteristics needed for an e-commerce server, Describe the addi...

Describe the additional characteristics needed for an e-commerce server? E-commerce services need dynamic configuration abilities and seasonal and every day service configurat

What about division and multiply operations, Q. What about division and mul...

Q. What about division and multiply operations? In most of the older computers divisions and multiply were implemented using subtract/add and shift micro-operations. If a digit

Expand cpi-c, Expand CPI-C. CPI-C= Common Program Interface Communica...

Expand CPI-C. CPI-C= Common Program Interface Communication.

What are interrupts, What are interrupts?  Interrupt: An interrupt i...

What are interrupts?  Interrupt: An interrupt is a hardware mechanism which enables an external device, classically input/output devices, to send a signal to the CPU. An int

Computers and cntrol, Define open and closed loop cotrol systems.Explain di...

Define open and closed loop cotrol systems.Explain difference between time varying and time invariant control system wth suitable example

List the properties which a hashing function should possess, List the prope...

List the properties which a hashing function should possess to ensure a good search performance. What approaches are adopted to handle collision? A hashing function h must poss

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