Enthuware

I have a question based on the explanation given "Windows uses Time Slicing i.e. it gives time to all the thread in proportion of their priorities but many unix systems do not let low priority threads run at all if a higher priority thread is running"

So we can say that the both OS (windows and unix) give priority for the high prioritized Thread. Doesn't it guarantee the high prioritized task runs first? So I believe we can always say that the Thread 't2' runs before 't1' runs. Can't we?

-Shamran-

No, there could be another OS that uses equal time slicing without using priorities. There is simply no guarantee.