[fpc-pascal] Use sleep in thread

[Michael Schnell]

On 02/25/2015 03:41 PM, Xiangrong Fang wrote:
>
> Can I use Sleep() in a thread to give up cpu time to other threads 
> running at the same time
AFAIK:

Sleep(n) makes the thread give up CPU for _at_least_ n milliseconds

Sleep(0) makes it give up it's current time slice and is due to be 
re-scheduled rather soon.

sleep will not necessary give time to other threads. it also might give 
the time to other programs running on the system.

In an SMP OS multiple threads run at the same time, anyway. Sleep might 
make a thread run that before was waiting for a CPU.

-Michael
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