Howto share application data using UNIX System V IPC mechanisms

Learn how to use message queues, semaphores, and shared memory to connect your applications

UNIX provides several methods for IPC. The SysV IPC methods are message queues, semaphores, and shared memory. Message queues allow one application to submit a message that other applications can pick up later, even after the sending application has finished. Semaphores ensure that multiple applications can lock resources and avoid race conditions. Shared memory allows multiple applications to share a common segment of memory, which provides a fast method of communicating and sharing large amounts of data. You can also use these methods together. For example, you can use a semaphore to control access to a shared memory segment.

IPC methods are helpful to application developers because they provide a standard way to communicate between applications and are portable across different UNIX flavors. The next time you find yourself needing to lock resources or share data between processes, try the SysV IPC mechanisms.

Read more at IBM developerworks


🐧 Get the latest tutorials on Linux, Open Source & DevOps via RSS feed or Weekly email newsletter.

🐧 0 comments... add one


CategoryList of Unix and Linux commands
Disk space analyzersdf duf ncdu pydf
File Managementcat cp mkdir tree
FirewallAlpine Awall CentOS 8 OpenSUSE RHEL 8 Ubuntu 16.04 Ubuntu 18.04 Ubuntu 20.04
Modern utilitiesbat exa
Network UtilitiesNetHogs dig host ip nmap
OpenVPNCentOS 7 CentOS 8 Debian 10 Debian 8/9 Ubuntu 18.04 Ubuntu 20.04
Package Managerapk apt
Processes Managementbg chroot cron disown fg glances gtop jobs killall kill pidof pstree pwdx time vtop
Searchingag grep whereis which
User Informationgroups id lastcomm last lid/libuser-lid logname members users whoami who w
WireGuard VPNAlpine CentOS 8 Debian 10 Firewall Ubuntu 20.04
0 comments… add one

Leave a Reply

Your email address will not be published.

Use HTML <pre>...</pre> for code samples. Still have questions? Post it on our forum