[fpc-pascal] Better random numbers ?

[Vincent Snijders]

Jonas Maebe wrote:
> 
> On 3 mrt 2006, at 13:42, Vinzent Hoefler wrote:
> 
>>> BTW, I never would have guessed that the random number generator
>>> would have used threadvars. I would have thought, that on app start
>>> you would set one randseed and then call random from all threads.
>>
>>
>> Considering that the state array for the Mersenne Twister is an
>> unprotected global variable, calling random from different threads
>> looks like a bad idea to me.
>>
>> I mean, it surely gives you sort of random values, but ...
> 
> 
> That's why its state (and indeed not just randseed) should be  threadvars.

Or use some locking mechanism. That would be slower, but would safe some 
memory.

Vincent