WordCount performance

[Walter Bright]

Georg Wrede wrote:
> Hmm. What kind of situations would need multiple threads simultaneously 
> reading from stdin? And if there aren't any, wouldn't locking be like 
> wearing a life vest on land?

If it was unsynchronized, if you had two threads reading lines from the 
input, the contents of the lines would be interleaved. With syncing, 
each thread will get complete lines.

> And isspace, is that really the right place to check for ascii?

It has to be, because its argument is an int, not a char.