Advanced synchronization in operating system, Operating System

Assignment Help:

Recall that condition variables are synchronization primitives that enable threads to wait until a particular condition occurs.

Generalizing, the combination of locks and condition variables is sometimes called a monitor, which is sometimes incorporated into data structures in some languages (note that this termi- nology is not always used in a standardized way).

Previously,we discussed howto use condition variables and signals to implement a simple producer- consumer system. Looking at this system again, could we move the signal() call in enqueue() down below the unlock()?

dequeue()
lock(A)
while (queue empty)
wait(A, C)
remove_item()
unlock(A)
enqueue()
lock(A)
insert_item()
// used to signal here, inside lock
unlock(A)
signal(C) // now signal here, outside lock

Will this work? The answer is yes. It might not be as clean conceptually, but nothing bad will happen (verify this for yourself).


Related Discussions:- Advanced synchronization in operating system

Define the client - server communications environment, Define the Client - ...

Define the Client - Server Communications Environment Today's client - server communications environment offers programmers great flexibility for application design. Applicatio

Question 3:, Question 3: (a) Fincorp Ltd is an insurance company wishing t...

Question 3: (a) Fincorp Ltd is an insurance company wishing to change over to a better business system using an improved version of a financial information system (FIS). The direc

How does an operating system make multiprogramming possible, How does an op...

How does an operating system make multiprogramming possible by using single processor?

Explain the scheduleworktodo function used in netware, Explain the Schedule...

Explain the ScheduleWorkToDo Function used in Netware ScheduleWorkToDo(MyThread Function, arg, workToDo) The ScheduleWorkToDo ( ) function is specific to NetWare 4.0. This c

Semaphore, define semaphore. how can we use semaphore to deal with n-proces...

define semaphore. how can we use semaphore to deal with n-process critical section problem.

Most-recently used algorithm, Evicting the most-recently used (MRU) page do...

Evicting the most-recently used (MRU) page does very well on LRU's worst case. In general, however, MRU is a bad idea, since many programs exhibit temporal locality in their memory

Explain operating systems for mainframe computers, What are the main differ...

What are the main differences between operating systems for mainframe computers and personal computers? The design goals of operating systems for those machines are quite diffe

Concepts of an address - data and control bus, Let us consider the operatio...

Let us consider the operation of the EPROM device in more detail. Consider the pining details below again   Before we examine the interface means of the EPROM, it is worth

Explain nonvolatile - volatile and stable storage, Q. Explain the differenc...

Q. Explain the differences in terms of cost between the three storage types nonvolatile, volatile and stable. Answer: Volatile storage refers to main as well as cache memory an

search tree generated by hill-climbing search, Show the search tree genera...

Show the search tree generated by Hill-Climbing search (text figure 4.2, page 122; or Local Search lecture, slide 6) for each of the two heuristics (a) and (b) applied to the follo

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