suspend/resume PM criterion for application

[Ran Shalit]

On Wed, Sep 10, 2014 at 10:25 PM,  <Valdis.Kletnieks at vt.edu> wrote:
> On Wed, 10 Sep 2014 21:58:48 +0300, Ran Shalit said:
>
>> 1. How can I make a process to notice this inactivity ? Do you think
>> it can be implemented by some periodic process who check if there is
>> activity ? It returns to the original question I raised, that I will
>> use some periodic process who checks maybe cpu load or something like
>> that. What do you think ?
>
> That's going to depend on your system and what processes are running.
>
> You may have an MP3 player going that doesn't take much CPU at all - but
> shutting down because the user hasn't hit a button in 47 minutes will probably
> irritate the user no end.  Or there may be a screensaver running that takes
> twice as much CPU as the MP3 player, but is totally OK on the system
> suspending whenever the rest of the system wants it.
>
> You're going to have to look at your system design, and decide for yourself
> what the criteria are.
>
>
>> 2. What Do you mean here by process ?  Do you mean SW process which
>> register for suspend notification (how do we do this) ? What about
>> devices which register for suspend/resume. Must they accept the
>> suspend ?
>
> I believe Android already has libraries and monitor processes for this.
>
> It's really hard to give more specific advice without knowing what your
> hardware, software, and usage is.

Ok, Thanks, I just tried to understand and learn from your previous answer.
I have OMAP Soc and knows that the linux SDK supports suspend/resume
and other mechnism. I did n't hear about the notification before.

Thanks, Ran