As an Amazon Associate I earn from qualifying purchases.

What is Semaphore in Operating System? PDF Download

Learn Semaphore definition in operating system with explanation to study “What is Semaphore”. Study semaphore explanation with operating system terms to review operating system course for online degree programs.

Semaphore Definition

  • An integer value used for signaling among processes.

    Operating Systems by William Stallings

Semaphore Explanation

A semaphore is a variable or abstract data type used to control access to a common resource by multiple processes in a concurrent system such as multitasking operating system. Semaphores are integer variables that are used to solve the critical section problem using two atomic operations, wait and signal.

Keep Learning Operating System Explanations

What is Privileged Instruction?

A privileged instruction is an instruction that can be executed only by the operating system in a specific mode. The ...

What is File Management System?

The system used by the operating system or program to organize or keep track of files. Although operating systems provide ...

What is Distributed Operating System?

A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. They ...

What is Pipe?

A pipe is a technique for passing information from one program process to another. Basically, a pipe passes a parameter ...

What is Process?

Process is basically a program in execution. It is the instance of a computer program that is being executed by ...

What is Memory Cycle Time?

Memory Cycle Time is the time between the start of one random access memory (RAM) access to the time when ...