freebsd-dev/contrib/perl5/ext/Thread/unsync.t

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use Thread;
$| = 1;
if (@ARGV) {
srand($ARGV[0]);
} else {
my $seed = $$ ^ $^T;
print "Randomising to $seed\n";
srand($seed);
}
sub whoami {
my ($depth, $a, $b, $c) = @_;
my $i;
print "whoami ($depth): $a $b $c\n";
sleep 1;
whoami($depth - 1, $a, $b, $c) if $depth > 0;
}
sub start_foo {
my $r = 3 + int(10 * rand);
print "start_foo: r is $r\n";
whoami($r, "start_foo", "foo1", "foo2");
print "start_foo: finished\n";
}
sub start_bar {
my $r = 3 + int(10 * rand);
print "start_bar: r is $r\n";
whoami($r, "start_bar", "bar1", "bar2");
print "start_bar: finished\n";
}
$foo = new Thread \&start_foo;
$bar = new Thread \&start_bar;
print "main: exiting\n";