Re: [Powertop] Why C++ is the language of implementation?

[Srinivas Pandruvada <srinivas.pandruvada at linux.intel.com>]

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On 03/31/2014 08:43 AM, Bill Vyzas wrote:
> Hi all,
>
> I am curious to know why PowerTOP is using C++ as the language of
> implementation but the majority of the program is written with the C
> standards. I checked also some other open source programs like the Gnome
> Power Manager and its doing the same thing.
>
> I know that C++ can also call C and I also know that there are couple of
> classes on the program but why use C++ for a few classes when you can have
> structs, which are basically classes, instead.
It is because of ease of implementation using inheritance and polymorphism.
For example you can have a common device class and other device CPUs are
expanding the capability of a basic device. Also for common code all 
objects are
devices, if it happens to be a CPU, then cpu specific methods can be called.
Also it provides a very easy path for enhancements, without touching the 
core
functionality.
You can do in C with struct and function pointers, but implementing in 
C++ is easy.

Thanks,
Srinivas

> Thanks,
> Bill
>
>
>
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