[PATCH 07/18] httpd/async: require IO arg

[Eric Wong <e@80x24.org>]

Callers that want to requeue can call PublicInbox::DS::requeue
directly and not go through the convoluted argument handling
via PublicInbox::HTTPD::Async->new.
---
 lib/PublicInbox/HTTPD/Async.pm |  8 --------
 lib/PublicInbox/MailDiff.pm    |  7 +++----
 lib/PublicInbox/SolverGit.pm   | 10 +++-------
 3 files changed, 6 insertions(+), 19 deletions(-)

diff --git a/lib/PublicInbox/HTTPD/Async.pm b/lib/PublicInbox/HTTPD/Async.pm
index b73d0c4b..2e4d8baa 100644
--- a/lib/PublicInbox/HTTPD/Async.pm
+++ b/lib/PublicInbox/HTTPD/Async.pm
@@ -25,14 +25,6 @@ use PublicInbox::ProcessIONBF;
 # bidirectional socket in the future.
 sub new {
 	my ($class, $io, $cb, $arg, $end_obj) = @_;
-
-	# no $io? call $cb at the top of the next event loop to
-	# avoid recursion:
-	unless (defined($io)) {
-		PublicInbox::DS::requeue($cb ? $cb : $arg);
-		die '$end_obj unsupported w/o $io' if $end_obj;
-		return;
-	}
 	my $self = bless {
 		cb => $cb, # initial read callback
 		arg => $arg, # arg for $cb
diff --git a/lib/PublicInbox/MailDiff.pm b/lib/PublicInbox/MailDiff.pm
index c3ce9365..908f223c 100644
--- a/lib/PublicInbox/MailDiff.pm
+++ b/lib/PublicInbox/MailDiff.pm
@@ -59,8 +59,7 @@ sub next_smsg ($) {
 		$ctx->write($ctx->_html_end);
 		return $ctx->close;
 	}
-	my $async = $self->{ctx}->{env}->{'pi-httpd.async'};
-	$async->(undef, undef, $self) if $async # PublicInbox::HTTPD::Async->new
+	PublicInbox::DS::requeue($self) if $ctx->{env}->{'pi-httpd.async'};
 }
 
 sub emit_msg_diff {
@@ -125,8 +124,8 @@ sub event_step {
 
 sub begin_mail_diff {
 	my ($self) = @_;
-	if (my $async = $self->{ctx}->{env}->{'pi-httpd.async'}) {
-		$async->(undef, undef, $self); # PublicInbox::HTTPD::Async->new
+	if ($self->{ctx}->{env}->{'pi-httpd.async'}) {
+		PublicInbox::DS::requeue($self);
 	} else {
 		event_step($self) while $self->{smsg};
 	}
diff --git a/lib/PublicInbox/SolverGit.pm b/lib/PublicInbox/SolverGit.pm
index 5f317f51..23d4d3d1 100644
--- a/lib/PublicInbox/SolverGit.pm
+++ b/lib/PublicInbox/SolverGit.pm
@@ -386,12 +386,9 @@ sub event_step ($) {
 }
 
 sub next_step ($) {
-	my ($self) = @_;
 	# if outside of public-inbox-httpd, caller is expected to be
 	# looping event_step, anyways
-	my $async = $self->{psgi_env}->{'pi-httpd.async'} or return;
-	# PublicInbox::HTTPD::Async->new
-	$async->(undef, undef, $self);
+	PublicInbox::DS::requeue($_[0]) if $_[0]->{psgi_env}->{'pi-httpd.async'}
 }
 
 sub mark_found ($$$) {
@@ -690,9 +687,8 @@ sub solve ($$$$$) {
 	$self->{found} = {}; # { abbr => [ ::Git, oid, type, size, $di ] }
 
 	dbg($self, "solving $oid_want ...");
-	if (my $async = $env->{'pi-httpd.async'}) {
-		# PublicInbox::HTTPD::Async->new
-		$async->(undef, undef, $self);
+	if ($env->{'pi-httpd.async'}) {
+		PublicInbox::DS::requeue($self);
 	} else {
 		event_step($self) while $self->{user_cb};
 	}