Alex Onsman has Published 210 Answers

Producer Consumer Problem using Semaphores

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 23:27:28
The producer consumer problem is a synchronization problem. There is a fixed size buffer and the producer produces items and enters them into the buffer. The consumer removes the items from the buffer and consumes them. A producer should not produce items into the buffer when the consumer is ... Read More

Remote Procedure Call (RPC)

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 22:39:43
A remote procedure call is an interprocess communication technique that is used for client-server based applications. It is also known as a subroutine call or a function call. A client has a request message that the RPC translates and sends to the server. This request may be a procedure or ... Read More

Deadlock Characterization

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 21:11:34
A deadlock happens in operating system when two or more processes need some resource to complete their execution that is held by the other process. A deadlock occurs if the four Coffman conditions hold true. But these conditions are not mutually exclusive. They are given as follows: Mutual Exclusion There ... Read More

Message Passing vs Shared Memory Process communication Models

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 20:18:38
Message passing model and shared memory model are models of interprocess communication. Details about these are given as follows: Message Passing Process Communication Model Message passing model allows multiple processes to read and write data to the message queue without being connected to each other. Messages are stored on the ... Read More

Multi-Threading Models

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 19:59:34
Multithreading allows the execution of multiple parts of a program at the same time. These parts are known as threads and are lightweight processes available within the process. Therefore, multithreading leads to maximum utilization of the CPU by multitasking. The main models for multithreading are one to one model, many ... Read More

Shared Memory Model of Process Communication

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 18:59:05
Process communication is the mechanism provided by the operating system that allows processes to communicate with each other. This communication could involve a process letting another process know that some event has occurred or transferring of data from one process to another. One of the models of process communication is ... Read More

User-level threads and Kernel-level threads

Alex Onsman
Alex Onsman
Published on 10-Oct-2018 16:24:04
A thread is a lightweight process that can be managed independently by a scheduler. It improves the application performance using parallelism. A thread shares information like data segment, code segment files etc. with its peer threads while it contains its own registers, stack, counter etc. The two main types of ... Read More

Different Models of Interprocess Communication

Alex Onsman
Alex Onsman
Published on 28-Sep-2018 12:52:57
Interprocess communication is the mechanism provided by the operating system that allows processes to communicate with each other. This communication could involve a process letting another process know that some event has occurred or transferring of data from one process to another. A diagram that illustrates interprocess communication is ... Read More

What is Context Switching in Operating System?

Alex Onsman
Alex Onsman
Published on 28-Sep-2018 12:01:15
Context Switching involves storing the context or state of a process so that it can be reloaded when required and execution can be resumed from the same point as earlier. This is a feature of a multitasking operating system and allows a single CPU to be shared by multiple processes. ... Read More

What is Interprocess Communication?

Alex Onsman
Alex Onsman
Published on 20-Sep-2018 15:18:58
Interprocess communication is the mechanism provided by the operating system that allows processes to communicate with each other. This communication could involve a process letting another process know that some event has occurred or the transferring of data from one process to another. A diagram that illustrates interprocess communication is ... Read More
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