Re: Is Text_IO.Put_Line() thread-safe?

[awdorrin <awdorrin@gmail.com>]

On Thursday, June 14, 2012 2:24:49 PM UTC-4, Robert A Duff wrote:
> > I'm not that worried about the corruption in the Put_Line itself, what
> > I'm worried about is if the corruption will go both ways, meaning
> > could it corrupt the record array that is being sorted. (Like the text
> > string being printed ending up in the middle of a data record.)
> 
> I'm not sure what you mean by that, but if you don't do proper
> synchronization, it's erroneous, which means anything could
> happen, including corruption of arbitrary data.

That is what I mean, if the Text_IO.Put_Line isn't thread-safe, and its picking up data from the array being sorted in the other thread, and printing it, then it very well could have written the information it was supposed to be printing to the screen, into that array that was being sorted... Anything could be corrupted.

I really cannot believe that the Put_Line's aren't thread safe.