Why main didn't wait until testfun finished in my example below? It seems is_joinable returned false. I found "a call to is_joinable returns true only if a thread has finished running, hasn't been detached and hasn't been joined already". How to judge a running but not join thread?

Hi, Anonymous Monk, I changed my code as below. If I have requirement to judge before join...how to write the condition... 

 #/usr/bin/perl -w
use strict;
use warnings;
use threads;
my @arrayRunningThreads = ();
&main;

sub main
{
    my $thrHandle = threads->create(\&detachedThreads);
        $thrHandle->detach();
    push @arrayRunningThreads, $thrHandle;
    for(1...3){
        $thrHandle = threads->create(\&MustJoin);
        push @arrayRunningThreads, $thrHandle;
    }
    
    foreach (@arrayRunningThreads){
        $_->join() if( $_->is_joinable() );
    }

    print "End. \n";
}    
sub detachedThreads
{
    sleep 3;
    print "exiting thread.\n";
}
sub MustJoin
{
    sleep 3;
    print "exiting thread.\n";
}

[download]
 output:
End.
Perl exited with active threads:
        3 running and unjoined
        0 finished and unjoined
        1 running and detached

[download]

In reply to is_joinable question by anaconda_wly

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