System call facilitates user programs running in the user mode to request services from the kernel mode of the operating system. The program in user mode doesn’t have direct access to system memory and hardware. While the program running in kernel mode has direct access to the system hardware and memory. System Call in Operating […]
Operating System
Synchronization Problems
In this article, we will learn about all the synchronization problems that must be tested against every proposed synchronization technique. Synchronization problem arises when the execution of cooperating is not coordinated properly which may affect the result of execution. Synchronization Problems Producer-Consumer Problem Readers Writers Problem Dining Philosophers Producer-Consumer Problem The producer-consumer problem is where […]
Types of System Calls
The system calls is a mechanism that allows the user program to invoke the kernel that lets the user program interact with the operating system. The number of system calls depends upon the kind of operating system you are using. In this section further, we will be discussing the type of system calls that the […]
Thread in Operating System
A particular program may have multiple processes, and each process has its separate address space as well as a single thread of control. Sometimes a process may have multiple threads in its address space. Now, a thread in the operating system can be determined as a fundamental unit of CPU utilization. In today’s content, we […]
Interprocess Communication
What is Interprocess Communication? Interprocess communication is communication between two concurrently executing processes. But, the concurrently executing processes in the system can be of two types – independent processes and cooperating processes. An Independent process is one that neither affects nor gets affected by other processes in the system. The cooperating process is a process that […]
Process Scheduling
Process scheduling organizes the processes to maximize CPU utilization. Process scheduling supports multiprogramming. Multiple processes are loaded to the main memory of the CPU, and the processes are switched so frequently that the CPU is busy executing one process at a time while the other is in a waiting for the state. Process scheduling helps […]
Process in Operating System
We all are aware of the computer and the operating system. All the CPU activities that are going on are termed as a process in an operating system. Well, there are several definitions of the term ‘process’ in the operating system. Like, some call the process a program or an instance of a program that […]