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

Script in multi user mode, What Component of LoadRunner would you use to pl...

What Component of LoadRunner would you use to play Back the script in multi user mode? Ans) The Controller component is used to playback the script in multi-user mode. This is c

What is a microform, What is a microform? This is the collective term f...

What is a microform? This is the collective term for all micro images kepted on a wide range of microfilm media, like roll film, fiche, aperture cards, strip or jackets.

Mechanisms for pick and place industrial robots - robotics, Each group is r...

Each group is required to complete a group assignment on the analysis, modelling and classification of one of the following classes of mechanisms encountered in robotics and indust

What is meant by maskable interrupts, A interrupt that can be turned off by...

A interrupt that can be turned off by the programmer is called as Maskable interrupt.

What is memory interleaving, Q. What is Memory Interleaving? In this sc...

Q. What is Memory Interleaving? In this scheme main memory is splitted in 'n' equal-size modules and CPU has separate Memory Base register and Memory Address Register for every

Explain the disadvantages of random scan display, Disadvantages of random s...

Disadvantages of random scan display - Just by wire-frame, it is almost impossible to create images with shaded objects or areas filled with a given colour. - In case

What is usb, What is USB USB (UNIVERSAL SERIAL BUS) is intended to conn...

What is USB USB (UNIVERSAL SERIAL BUS) is intended to connect peripheral devices like mouse, keyboards, modems and sound cards to microprocessor through a serial data path and

Define memory address map, Define memory address map? Addressing of mem...

Define memory address map? Addressing of memory can be established by means of a table that specifies the memory address assigned to each chip. The tables, known as memory addr

What are universal gates, What  are  universal  gates.  Construct  a  lo...

What  are  universal  gates.  Construct  a  logic  circuit  using  NAND  gates  only  for  the expression x = A . (B + C). Ans. Universal Gates: NAND and NOR Gates both are t

How and what data is collected - weather simulation, How and what data is c...

How and what data is collected - Weather simulation -  Sensors measure pressure, relative humidity, temperature and wind speed and wind direction -  Sensors are placed in w

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