[Haskell-cafe] Re: Waiting for thread to finish
dav.vire+haskell at gmail.com
Fri Nov 30 06:44:23 EST 2007
On Nov 28, 2007 11:07 PM, Maurício <briqueabraque at yahoo.com> wrote:
> Sorry, I don't agree. I try to write things in a
> way that when you read it you can get an intuition
> on why it's doing what it's doing; even when the
That's what comment are for :)
> generate. So, instead of checking if threads have
> finished, I decided to check if files exist and
> are available for writing. When I read 'takeMVar
Checking a file is non blocking, right ? So you have to loop until the
file becomes available.
taking a MVar, on the other hand, blocks your thread until the other
one finishes, without using cpu time, etc.
> know of a benchmark where the task is some kind of
> situation where you actually get a result faster
> by using threads than by using a single thread?
Threads won't give you a speedup unless you run the program on a
They help making the program simpler, IMHO.
More information about the Haskell-Cafe