On Wed, 03 Aug 2011 13:14:50 -0400, Andrej Mitrovic
<andrej.mitrov...@gmail.com> wrote:
Take a look at this:
import std.stdio;
import core.thread;
void main()
{
foreach (x; 0 .. 1000)
{
Thread.sleep(dur!("usecs")(999));
writeln(x);
}
foreach (x; 0 .. 1000)
{
Thread.sleep(dur!("usecs")(1000));
writeln(x);
}
}
Compile and run it. The first foreach loop ends in an instant, while
the second one takes much much longer to finish, which is puzzling
since I've only increased the sleep while for a single microsecond.
What's going on?
I can only imagine that the cause is the implementation is using an OS
function that only supports millisecond sleep resolution. So essentially
it's like sleeping for 0 or 1 millisecond. However, without knowing your
OS, it's hard to say what's going on. On my linux install, the timing
seems equivalent.
-Steve
