Describe the necessary conditions for deadlock, Computer Engineering

Assignment Help:

Describe the necessary conditions for Deadlock.

Required conditions for deadlock

1. Mutual exclusion

2. Hold and wait

3. No preemption

4. Circular wait

Mutual exclusion: This condition must hold for non sharable resources. For illustration, a printer cannot be concurrently shared by several processes. Shared resources conversely, do not need mutually exclusive access, and therefore cannot be included in the deadlock.  Generally, however this is not possible to prevent deadlocks through denying the mutual exclusion condition.

Hold and wait: To make sure that the hold and wait condition never arises in the system; we should guarantee that, whenever a process requests a resource, this does not hold any other resources. Processes may requests several resources and use them before such can request any other resources, as it should release all the resources that this is currently allocated.

No preemption: The third essential condition is that here is no preemption of resources which have already been allocated. If a process that is holding several resources requests other resource that this cannot be instantly allocated to this. Then all resources presently being held are preempted.

Circular Wait: One way to make sure that the circular wait condition never holds is to impose a total ordering of all resources kinds, and to make sure that each process requests resources in a rising order of enumeration.


Related Discussions:- Describe the necessary conditions for deadlock

Determine the method for updating the main memory, The method for updating ...

The method for updating the main memory as soon as a word is removed from the Cache is known as  (A) Write-through                  (B) write-back   (C) protected write

Synchronous sequential circuits, Q. Differentiate the Multiplexer and Demul...

Q. Differentiate the Multiplexer and Demultiplexer with respect to their concept, block diagram and circuit. Q. What is the difference between Synchronous sequential circuits an

Define flowchart, Define Flowchart. A  process  of  expressing  an  alg...

Define Flowchart. A  process  of  expressing  an  algorithm  by  a  collection  of  linked  geometric  shapes   containing explanations of the algorithm's steps.

Determine the binary equivalent of hexadecimal FA, The binary equivalent of...

The binary equivalent of (FA) 16   is ? Ans. (FA) 16 = (11111010) 10

What is pbo and pai events, What is PBO and PAI events? PBO- Process...

What is PBO and PAI events? PBO- Process before Output-It verifies the flow logic before displaying the screen. PAI- Process after Input-It verifies the flowlogic after

Show the transmission control protocol, Q. Show the Transmission Control Pr...

Q. Show the Transmission Control Protocol? Transmission Control Protocol (TCP) TCP makes Internet reliable. TCP solves many problems which can occur in a packet switching

Describe the advantages of java servlets over cgi interface, Describe the a...

Describe the advantages of JAVA servlets over CGI interface. The Advantage of Servlets Over "Tradi tional" CGI: Java servlets are extra efficient, easier to utilize more pow

Explain about microsoft access, Microsoft access name has been transformed ...

Microsoft access name has been transformed to Microsoft office access. This software incorporates relational database management system which joins GUI (graphical user interface) w

Describe big notation, Q. Describe Big Notation? Big O Notation : The ...

Q. Describe Big Notation? Big O Notation : The set O (g(n)) comprises all functions f(n) for that there exists   positive constants c such that for satisfactorily large values

Describe the characteristics of mainframes, Problem 1 (a) List and desc...

Problem 1 (a) List and describe the characteristics of mainframes, minicomputers and microcomputers. (b) Briefly describe what is meant by electronic commerce and what b

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