Profiling qt app: pthread_spin_init calls

[t3685]

Hi,

I'm using Qt 5.02 (MinGW) to make a little board game. In order to get it to run faster, I ran it through Very Sleepy, and according to the results these are the three most called functions:

pthread_spin_init
pthread_tls_init
pthread_setspecific

This is very surprising to me, because I don't use any threads. The only thing I can think of, is my use of QVector and QSharedPointer that might do some locking/unlocking.

I tried the same code on my Linux box (same hardware) and there I see that the results are significantly faster.

Can anyone clue me in, why pthread function calls are being made?

Thanks!