dcsimg
Main » TERM » M »

Memory Mapping Definition & Meaning

Memory mapping is a process or command in computer programming that requests that files, code, or objects be brought into system memory. It allows files or data to be processed temporarily as main memory by a central processing unit. Memory mapping I/O (input/output) uses an external device, which connects to a computer system so that the computer's CPU can access the data within the device.

mmap() function

The mmap() system call in Unix, Linux, and other programs (such as C programming language) allows a program to create a new address in which it can process files or objects. Memory mapping requests that files, code, or objects be brought into a different address (in this case, system memory). The operating system, or kernel in Linux, must find or approve the new address. Once the new address has been mapped, mmap() uses the length of bytes to map the data.

The munmap() command, or system call, unmaps or terminates the session when the computer has finished processing the data in memory.










LATEST ARTICLES
Texting & Chat Abbreviations

From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top... Read More »

Huge List of Computer Certifications

Have you heard about a computer certification program but can't figure out if it's right for you? Use this handy list to help you decide. Read More »

STUDY GUIDES
Computer Architecture Study Guide

Computer architecture provides an introduction to system design basics for most computer science students. Read More »

Network Fundamentals Study Guide

Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »

The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »