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

Explain the booting process for a windows xp system, Q. Explain the booting...

Q. Explain the booting process for a Windows XP system? Answer: (1) Since the hardware powers on the BIOS begins executing From ROMand loads as well as executes the bootstrap

Virtual addresses, Virtual addresses are made up of two parts: the ?rst par...

Virtual addresses are made up of two parts: the ?rst part is the page number, and the second part is an offset inside that page. Suppose our pages are 4kb (4096 = 212 bytes) long,

Advanced synchronization in operating system, Recall that condition variabl...

Recall that condition variables are synchronization primitives that enable threads to wait until a particular condition occurs. Generalizing, the combination of locks and condit

Explain logical file system architecture, Logical File System Responsi...

Logical File System Responsible for providing the before discussed interface to the user including: File access. Directory operations. Security and protection.

Explain the os/2 operating system, Explain the OS/2 Operating System Li...

Explain the OS/2 Operating System Like NetWare, OS/2 manage resources at three levels, as shown in Figure 4.5 Resources may be maintained at the session, process, and thread le

Information system can be divided into three task areas, From hardware pers...

From hardware perspective, every information system can be divided into three task areas Presentation, Application Logic and Data Storage. The R/3 Basis software is extremely s

Demand-paging system, Consider a demand-paging system with the following ti...

Consider a demand-paging system with the following time-measured utilizations: CPU utilization: 10%, Paging disk: 98%, Other I/O devices: 5%. What does this imply? How to improv

What are the issues in designing a network, Normal 0 false fa...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Define memory management, Define memory management In multiprogramming ...

Define memory management In multiprogramming system the user part of memory should be further subdivided to accommodate multiple processes. The task of subdivision is carried o

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