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

Two independent mechanisms for controlling interrupt request, What are the ...

What are the two independent mechanisms for controlling interrupt request? At the device end, an interrupt enable bit in a control register verifies whether the device is permi

Why schottky transistors preferred over other transistors , In digital ICs,...

In digital ICs, Schottky transistors are preferred over normal transistors because of their ? Ans. Lower  propagation  delay  in digital ICs, as  shottky  transistors  reduce

What is the main function of an assembly, What is the main function of an a...

What is the main function of an assembly It contains code that the common language runtime implements. Microsoft intermediate language (MSIL) code in a portable executable (PE

What is gimps native graphics file format, XCF is GIMP's "native" format. T...

XCF is GIMP's "native" format. This will preserve all information about an image, having the layers.

Special theory of relativty, michelson-morley experiment-motivation and exp...

michelson-morley experiment-motivation and experimental setup

What is the function of a tlb, What is the function of a TLB (translation...

What is the function of a TLB (translation look-aside buffer)? A small cache called the TLB is interporated into MMU, which having of the page table entries that correspondi

Automatic typewriter in information distribution, Automatic typewriter : I...

Automatic typewriter : It is a power-driven machine, which automatically types a standard pro forma from a previously punched or stencilled master. When the master is placed on th

Explain the working of static ram - computer memory, Explain the working of...

Explain the working of Static RAM - Computer Memory? SRAM devices tender extremely fast access times (approximately four times faster than DRAM) but are much more expensive to

How to get the column count of a report, How to get the column count of a r...

How to get the column count of a report? SY-LINSZ system variable gives the column count (line size) and SY-LINCT for line count.

Determine why a new system is required, Q. Determine why a new system is re...

Q. Determine why a new system is required? Feasibility Study: - Feasibility study is the method of defining the current problem determining why a new system is essential and

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