Hi monks.

Taking the above codes as an example, I found that not every thread is
re-collected right after the join is completed when using join to
perform the re-collection job. The memory will be re-cycled after all
the thread in @thread has been "join". When applying to a practial
job, it will be not satisfied. However, if using
"threads->new("StartTest")->detach" directly, there is no such
problem. Why?

-----------8<------------ 

#!/usr/bin/Perl
use 5.008;
use strict;
use threads;
use threads::shared;
 
$| = 1; 
  
my @threads;
 
foreach (1 .. 20) {
 push @threads, threads->new('StartTest');
 # threads->new('StartTest')->detach;
 threads->yield;
} 
  
while (my $thread = shift @threads) {
   $thread->join;
} 
  

sleep 10; 
  
print "\n", "All threads done\n"; 
  
sub StartTest
{
 my $self = threads->self;
 my @m = (1 .. 99999); 
  
 print "Thread ", $self->tid, " started\n";
 sleep ($self->tid + 5);
 print "Thread ", $self->tid, " ending\n";
} 
  

1; 
  
__END__

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In reply to The problem on re-collection thread using join by RobCheung

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