Efficient Timer Algorithm

Question

What is the best algorithm to implement a simple timer library. The library should allow the following:

1. Timers to be started
2. Timers to be stopped

Answer 1

Timers are typically best implemented in an operating system kernel, at the assembly/C level, making use of platform-specific features like APIC timers wherever possible.

You might like to look at http://lwn.net/Articles/167897/ for details on the Linux implementation, and dig through the Linux source code to see working implementations.