Producer-consumer using condition variables, Operating System

Assignment Help:

Now let us present an implementation of a producer-consumer system using condition variables. This implementation works.

dequeue()

lock(A)

while (queue empty) {
wait(A, C) // atomically releases lock A and sleeps, waiting for
// condition variable C.
// When the thread wakes up, it re-acquires the lock.
// C is the condition variable that means ''queue not empty''.
}

remove_item()
unlock(A)
enqueue()
lock(A)
insert_item()
signal(C)
unlock(A)

In dequeue() above, if the thread wakes up and by chance the queue is empty, there is no problem: that's why we need the "while" loop.


Related Discussions:- Producer-consumer using condition variables

What is indexed allocation, What is indexed allocation? Every file has ...

What is indexed allocation? Every file has its own block of pointers to the sectors of the file.

Comparing gc to malloc, Garbage collectors trade space for time. If we coll...

Garbage collectors trade space for time. If we collect all the time (which requires a lot of processing time), the GC allocator will use the least memory possible. On the other han

Determine the fork and execlp functions - linux, Assignment What I...

Assignment What I'm covering: General control flow fork() execlp() Parameters Makefiles Additional Questions General Control Flow/fork(

State the advantage of multiprocessor system, State the advantage of multip...

State the advantage of multiprocessor system? The advantages of multiprocessor system are:- a)      Enhanced throughput. b)      Economy of scale. c)       Enhanced re

Multilevel queue scheduling, Explain multilevel queue scheduling and multil...

Explain multilevel queue scheduling and multilevel feedback queue scheduling #Minimum 100 words accepted#

Android, Which android version is available till now

Which android version is available till now

Rf, whta is an operating system ? what sorts services are provided by an op...

whta is an operating system ? what sorts services are provided by an operating system ?

Synchronization, As we already know, threadsmust ensure consistency; otherw...

As we already know, threadsmust ensure consistency; otherwise, race conditions (non-deterministic results) might happen. Now consider the "too much milk problem": two people share

How several bits are there in the logical address, Q. Regard as a logical a...

Q. Regard as a logical address space of eight pages of 1024 words every mapped onto a physical memory of 32 frames. a. How several bits are there in the logical address? b. H

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