linux shared memory tutorial

OverviewShared memory is one of the simplest ways to communicate between processes. Shared memory consent two or many other processes to access the same piece of memory, as if the malloc () function returns a pointer to the same physical memory area

OverviewShared memory is one of the simplest ways to communicate between processes. Shared memory allows two or more processes to access the same piece of memory, as if the malloc () function returns a pointer to the same physical memory area to a

The memory between the different processes is independent of each other, there is no way to directly manipulate each other's data, while the shared memory is provided by the operating system memory mapping mechanism, so that the different processes

Don't be nervous. Shared Objects have nothing to do with object-oriented technology! We are now discussing the dynamic link library on the Linux platform (similar to the DLL in Windows ). We have used some types of libraries in different periods

Read-write program first: Read: Unix/linux Command View: Key: A unique key value for shared memory that is shared by the key to determine which piece of memory you are reading. Shmid: When you use key to get memory, you get the value

Basic tutorial for Embedded Linux (version 2nd)  Edit recommendations Authoritative book on Embedded LinuxAmazon five-star ratingComprehensive Analysis of Embedded Linux development, revealing a large number of technical Insiders      Basic

Basics of Linux Learning 1, what is Linux? To be exact, the Linux kernel (the core program of the system), whose kernel copyright belongs to Linus Torvalds, is issued under the GPL (GNU general public License) Copyright Agreement, and anyone can

Linux virtual memory management on x86 Author: Zhou mengxing 06:02:00 from: http://www.china-pub.com PrefaceLinux supports many hardware operating platforms, such as Intel x86, Alpha, and iSCSI. For

2nd Chapter: Installation Guide 2.1 Pre-Installation Preparation 1, collecting system data: In order to be able to successfully install and set up the Linux system, you must put the following information for the installation of the system to

Use smem to visually display Linux memory usage Insufficient physical memory has a great impact on the performance of Linux desktop and server systems. When your computer slows down, the first thing to do is to release the memory. Especially in a