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* [PATCH] httpd/async: set O_NONBLOCK correctly
@ 2021-02-05  0:13 Eric Wong
  0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2021-02-05  0:13 UTC (permalink / raw)
  To: meta

While Perl tie is nice for some things, getting
IO::Handle->blocking to work transparently with it doesn't
seem possible at the moment.

Add some examples in t/spawn.t for future hackers.

Fixes: 22e51bd9da476fa9 ("qspawn: switch to ProcessPipe via popen_rd")
---
 lib/PublicInbox/HTTPD/Async.pm | 3 ++-
 t/spawn.t                      | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/HTTPD/Async.pm b/lib/PublicInbox/HTTPD/Async.pm
index bd1fd8fa..1de9501d 100644
--- a/lib/PublicInbox/HTTPD/Async.pm
+++ b/lib/PublicInbox/HTTPD/Async.pm
@@ -37,7 +37,8 @@ sub new {
 		arg => $arg, # arg for $cb
 		end_obj => $end_obj, # like END{}, can ->event_step
 	}, $class;
-	IO::Handle::blocking($io, 0);
+	my $pp = tied *$io;
+	$pp->{fh}->blocking(0) // die "$io->blocking(0): $!";
 	$self->SUPER::new($io, EPOLLIN | EPOLLET);
 }
 
diff --git a/t/spawn.t b/t/spawn.t
index 0eed79bb..6f811ec1 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -77,6 +77,11 @@ EOF
 {
 	my $fh = popen_rd([qw(printf foo\nbar)]);
 	ok(fileno($fh) >= 0, 'tied fileno works');
+	my $tfh = (tied *$fh)->{fh};
+	is($tfh->blocking(0), 1, '->blocking was true');
+	is($tfh->blocking, 0, '->blocking is false');
+	is($tfh->blocking(1), 0, '->blocking was true');
+	is($tfh->blocking, 1, '->blocking is true');
 	my @line = <$fh>;
 	is_deeply(\@line, [ "foo\n", 'bar' ], 'wantarray works on readline');
 }

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2021-02-05  0:13 [PATCH] httpd/async: set O_NONBLOCK correctly Eric Wong

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