-# Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
+# Copyright (C) 2016-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# a tied handle for auto reaping of children tied to a pipe, see perltie(1)
package PublicInbox::ProcessPipe;
use strict;
-use warnings;
+use v5.10.1;
+use PublicInbox::DS qw(dwaitpid);
sub TIEHANDLE {
- my ($class, $pid, $fh) = @_;
- bless { pid => $pid, fh => $fh }, $class;
+ my ($class, $pid, $fh, $cb, $arg) = @_;
+ bless { pid => $pid, fh => $fh, cb => $cb, arg => $arg }, $class;
}
sub READ { read($_[0]->{fh}, $_[1], $_[2], $_[3] || 0) }
sub READLINE { readline($_[0]->{fh}) }
+sub WRITE {
+ use bytes qw(length);
+ syswrite($_[0]->{fh}, $_[1], $_[2] // length($_[1]), $_[3] // 0);
+}
+
+sub PRINT {
+ my $self = shift;
+ print { $self->{fh} } @_;
+}
+
+sub adjust_ret { # dwaitpid callback
+ my ($retref, $pid) = @_;
+ $$retref = '' if $?
+}
+
sub CLOSE {
my $fh = delete($_[0]->{fh});
my $ret = defined $fh ? close($fh) : '';
- my $pid = delete $_[0]->{pid};
+ my ($pid, $cb, $arg) = delete @{$_[0]}{qw(pid cb arg)};
if (defined $pid) {
- waitpid($pid, 0);
- $ret = '' if $?;
+ unless ($cb) {
+ $cb = \&adjust_ret;
+ $arg = \$ret;
+ }
+ dwaitpid $pid, $cb, $arg;
}
$ret;
}