Re: ANN: BatMon 0.3

[David Chisnall]

On 7 Jul 2008, at 22:48, Riccardo wrote:

> I don't like the idea of depending on DBus. All this power  checking  
> has too many layers, indirections and uncertainity already. Now  
> Linux has also /sys filesystem and I bet I will end needing to  
> support it alongside of /proc.

Linux completely fails at the one task an OS is meant to be good at -  
abstracting the hardware from developers.  I had huge problems getting  
this code to work correctly on Linux, where 2.4 Vs 2.6 kernels, x86 Vs  
PowerPC, Monday Vs Tuesday, etc. all gave different format plain text  
files that needed to be parsed.  There's now a library containing  
several thousand lines of code available to do on Linux something that  
is about a dozen lines of code on any of the BSD family.

> OpenBSD is interesting though, I don't have it running on a Laptop,  
> so I can't check and I refrain from blind-developing. But if you  
> know of somebody who has OpenBSD on a laptop (yourself?) I will  
> collaborate egaerly to support another system.

I don't have OpenBSD on a laptop, but the code is trivial - just read  
the relevant sysctls.  I tested it on my colocated Mac Mini, which  
runs OpenBSD.  You can find the code here:

http://svn.gna.org/viewcvs/etoile/trunk/Etoile/Frameworks/SystemConfig/Source/SCPower_OpenBSD.m?rev=2509&view=auto

If you have any problems understanding it, check the relevant man page  
- unlike Linux, OpenBSD actually comes with useful documentation.

David