Ricky Barnes has Published 129 Answers

Readers-Writers Problem

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 23:22:03
The readers-writers problem relates to an object such as a file that is shared between multiple processes. Some of these processes are readers i.e. they only want to read the data from the object and some of the processes are writers i.e. they want to write into the object. The ... Read More

Operating Systems Client/Server Communication

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 22:28:57
Client/Server communication involves two components, namely a client and a server. They are usually multiple clients in communication with a single server. The clients send requests to the server and the server responds to the client requests. There are three main methods to client/server communication. These are given as follows: ... Read More

Priority Inversion

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 21:26:00
Priority inversion is a operating system scenario in which a higher priority process is preempted by a lower priority process. This implies the inversion of the priorities of the two processes.Problems due to Priority InversionSome of the problems that occur due to priority inversion are given as follows −A system ... Read More

Cooperating Process

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 21:06:59
Cooperating processes are those that can affect or are affected by other processes running on the system. Cooperating processes may share data with each other.Reasons for needing cooperating processesThere may be many reasons for the requirement of cooperating processes. Some of these are given as follows:ModularityModularity involves dividing complicated tasks ... Read More

Process vs Parent Process vs Child Process

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 20:38:44
In Operating System, the fork() system call is used by a process to create another process. The process that used the fork() system call is the parent process and process consequently created is known as the child process. Details about these are given as follows: Process A process is ... Read More

Race Condition, Critical Section and Semaphore

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 20:13:14
Race conditions, Critical Sections and Semaphores are an key part of Operating systems. Details about these are given as follows:Race ConditionA race condition is a situation that may occur inside a critical section. This happens when the result of multiple thread execution in critical section differs according to the order ... Read More

Mutex vs Semaphore

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 19:14:53
Mutex and Semaphore both provide synchronization services but they are not the same. Details about both Mutex and Semaphore are given below: Mutex Mutex is a mutual exclusion object that synchronizes access to a resource. It is created with a unique name at the start of a program. The Mutex ... Read More

Running vs Waiting vs Terminated Process

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 18:54:57
A process is an active program. It can also be said as a program that is under execution. It is more than the program code as it includes the program counter, process stack, registers, program code etc.A process passes through different states as it executes. A diagram that illustrates all ... Read More

Critical Section Problem

Ricky Barnes
Ricky Barnes
Published on 10-Oct-2018 16:14:34
The critical section is a code segment where the shared variables can be accessed. An atomic action is required in a critical section i.e. only one process can execute in its critical section at a time. All the other processes have to wait to execute in their critical sections.A diagram ... Read More

Different Types of Process Schedulers

Ricky Barnes
Ricky Barnes
Published on 28-Sep-2018 11:50:54
Process Scheduling handles the selection of a process for the processor on the basis of a scheduling algorithm and also the removal of a process from the processor. It is an important part of multiprogramming operating system. There are many scheduling queues that are used in process scheduling. When the ... Read More
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