Where Are Operating Systems Headed?

An anonymous reader writes "Dr. Dobb's Michael Swaine breaks down the question of where operating systems are headed. Among his teasers: Is Vista the last version of desktop Windows? (Counterintuitively, he says no.); Did Linux miss its window on the desktop? (Maybe.) And, most interestingly, are OSes at this point no longer necessary? He calls out the Symbian smartphone OS as something to keep an eye on, and reassures us that Hollywood-style OSes are not in our short-term future. Where do you weigh in on the future of operating systems? In ten years will we all be running applications via the internet?"

Comments

They are a new platform

[davidwr]

Think of a computer as a layer of platforms. Applications can target any platform unless some part of the platform stack restricts such access.

A typical PC:
CPU and other hardware, BIOS, OS kernel including kernel-level library routines and virtual-machine subsystems, OS-supplied and 3rd-party library routines including OpenGL and non-kernel virtual machines, and applications. For the sake of simplicity I'm ignoring complex scenarios like OSes running in a VM that's running in an OS that's running in a VM.

In principle, applications can "call" functions at any level in the stack, although in modern OSes the kernel blocks direct access to the BIOS and some other hardware and the chip itself blocks access to privileged instructions by unprivileged applications.