Contents:
CallbackBase
CallbackBase::reset()
CallbackBase::is_set()
Callback
Callback::call()
Callback::getResult()
GilAwareMutex
GilAwareMutex::lock()
GilAwareMutex::unlock()
GilAwareMutex::try_lock()
ScopedGilAcquire
ScopedGilRelease