+sub wq_sync_run {
+ my ($self, $wantarray, $sub, @args) = @_;
+ if ($wantarray) {
+ my @ret = eval { $self->$sub(@args) };
+ ipc_return($self->{0}, \@ret, $@);
+ } else { # '' => wantscalar
+ my $ret = eval { $self->$sub(@args) };
+ ipc_return($self->{0}, \$ret, $@);
+ }
+}
+
+sub wq_do {
+ my ($self, $sub, @args) = @_;
+ if (defined(wantarray)) {
+ pipe(my ($r, $w)) or die "pipe: $!";
+ wq_io_do($self, 'wq_sync_run', [ $w ], wantarray, $sub, @args);
+ undef $w;
+ _wait_return($r, $sub);
+ } else {
+ wq_io_do($self, $sub, [], @args);
+ }
+}
+
+sub _wq_worker_start ($$$$) {
+ my ($self, $oldset, $fields, $one) = @_;
+ my ($bcast1, $bcast2);
+ $one or socketpair($bcast1, $bcast2, AF_UNIX, $SEQPACKET, 0) or
+ die "socketpair: $!";
+ my $seed = rand(0xffffffff);