OS X 10.9 & App Nap

[J. Baker]

I tried that a when Danilo posted it but it didn't work for me for some reason. Glad it worked for you guys.

[Danilo]

@J.Baker:
Could it have something to do with the flags you use? ( #NSActivityBackground or #NSActivityUserInitiated or ... )

[J. Baker]

@J.Baker:
Could it have something to do with the flags you use? ( #NSActivityBackground or #NSActivityUserInitiated or ... )

If I remember correctly, I tried all possible flags. I'm not sure why it didn't work for me but I can try it again sometime soon.

[spacebuddy]

J. Baker,

Yes, use those two variables. You need to call this in your thread or a timer and it should work

I tested in Maverick and Yosemite and it works.

I think App Nap kicks in when the CPU goes to 0 for a little bit. What you can try is setup a timer (1000 ms) which will ramp the CPU
up to like 0.3 which should stop App Nap. I have not tested this, but it should work.

Nevermind, I just tried that and it does not work.

Here is the code I use to stop App Nap.

NSProcessInfo = CocoaMessage(0,0,"NSProcessInfo processInfo")
If NSProcessInfo
Value=#NSActivityUserInitiated ! #NSActivityLatencyCritical
EndIf

CocoaMessage(0,NSProcessInfo,"beginActivityWithOptions:@",@Value,"reason:$",@"block")

[J. Baker]

Thanks and will try again. My app was using roughly 7-10% cpu when I first tried it but app nap still kicked in. Mavericks has been updated since then though, so maybe it will work now.