How do I get CPU temperature and fan speeds in OS X?
I understand that information is obtained from IOHWSensor in IOKit, but I'm unable to find any reliable information on how to exactly do that.
I've found an article with a sample program - http://www.booktou.com/node/148/0321278542/ch10lev1sec7.html, but all I get with it is the GPU temperature. I'm sure there are CPU temperature sensors on the unibody Macs, so that means I'm doing something wrong.
The source code for this Prefpane that's called FanControl is avilable; it shows temperatures and fan speeds: http://www.lobotomo.com/products/FanControl/index.html