What? Care to explain that? Better still, care to demo it?

Sure, launch your favorite OS monitor and enjoy: 

use strict; use warnings;
use threads;
$| = 1;
{
  package foo;
  sub run { threads->create(sub { sleep 10 }) }
}
{
  my @a;
  for (1..3e6) { push @a,  "foo".rand }
  print "memory allocated\n";
  sleep 10;
  print "now running threads\n";
  foo->run;
  foo->run;
  sleep 10;
}

[download]
Only explicitly shared data gets cloned on thread creation

No, it is exactly the opposite, everything but shared data gets cloned when a thread is created.

FYI: It is perfectly possible, and reasonably simple to do non-blocking IO on a pipe under win32 without using threads. You can't use select to do it directly, but with sufficient XS/internals skills, the nitty-gritty could be hidden under the covers of Perl's select.

So, can you point me in the right direction?

In reply to Re^12: Slow evolution of Perl = Perl is a closed Word (thread decade) by salva
in thread Slow evolution of Perl = Perl is a closed Word by Anonymous Monk

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