Right way to avoid 100% cpu on main thread

[trikko]

On main thread there a loop waiting for different things to happen.
If i do this:

while(...) { qApp->processEvents(); } gui responds but cpu is stucked to 100%

If i do this:

while(..) { qApp->processEvents(); QThread::sleep(0); } gui responds but cpu is stucked to 25%.

Which is the right way to get a low cpu usage in an empty loop keeping app responsive?

Thanks in advance,
A.

[aha_1980]

hi @trikko

the correct way is to react to a signal in a slot instead of using wait loops (at least in main thread).

what exactly are you waiting for?