Interprocess communication with D-Bus and HAL
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It’s the end of the line for CORBA! Gnome now relies on the D-Bus messaging system, and KDE is in the process of migrating.
Nobody likes applications that spend all day sitting in the corners of the desktop and refusing to talk to anything else. The least you might expect would be for them to exchange data with other desktop residents using simple drag & drop techniques. But many users expect their programs to demonstrate more advanced communication skills at all levels. Of course, users want pluggable USB disks no matter what program they are using. And VOIP softphones should make friends with the new hardware when you change the headset without demanding a reboot. To allow this to happen, a Linux system needs a communication system that lets desktop applications talk to one another and to the underlying levels right down through the kernel to the hardware. And if the Freedesktop developers have any say in the matter, D-Bus [1], which relies on Hardware Abstraction Layer HAL [2], will be the communication system for future generations of Linux.
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