X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FHTTPD%2FAsync.pm;h=35075d344b0c2848fb8b12efd014c01093b8aa54;hb=95bdac7f09c69036efed537a4d03d5bdd2ae4eb6;hp=d5628ee8d7ca8b457f9999ef118b18553dab61fd;hpb=aea0a8d8bf9bf26898c811bf28f023d968c39de3;p=public-inbox.git
diff --git a/lib/PublicInbox/HTTPD/Async.pm b/lib/PublicInbox/HTTPD/Async.pm
index d5628ee8..35075d34 100644
--- a/lib/PublicInbox/HTTPD/Async.pm
+++ b/lib/PublicInbox/HTTPD/Async.pm
@@ -1,4 +1,4 @@
-# Copyright (C) 2016-2019 all contributors
+# Copyright (C) 2016-2020 all contributors
# License: AGPL-3.0+
#
# XXX This is a totally unstable API for public-inbox internal use only
@@ -10,7 +10,7 @@ package PublicInbox::HTTPD::Async;
use strict;
use warnings;
use base qw(PublicInbox::DS);
-use fields qw(cb end);
+use fields qw(http fh cb arg end_obj);
use Errno qw(EAGAIN);
use PublicInbox::Syscall qw(EPOLLIN EPOLLET);
@@ -18,33 +18,37 @@ use PublicInbox::Syscall qw(EPOLLIN EPOLLET);
# $io is a read-only pipe ($rpipe) for now, but may be a
# bidirectional socket in the future.
sub new {
- my ($class, $io, $cb, $end) = @_;
+ my ($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($cb);
- die '$end unsupported w/o $io' if $end;
+ PublicInbox::DS::requeue($cb ? $cb : $arg);
+ die '$end_obj unsupported w/o $io' if $end_obj;
return;
}
my $self = fields::new($class);
IO::Handle::blocking($io, 0);
$self->SUPER::new($io, EPOLLIN | EPOLLET);
- $self->{cb} = $cb; # initial read callback, later replaced by main_cb
- $self->{end} = $end; # like END {}, but only for this object
+ $self->{cb} = $cb; # initial read callback
+ $self->{arg} = $arg; # arg for $cb
+ $self->{end_obj} = $end_obj; # like END{}, can ->event_step
$self;
}
-sub main_cb ($$) {
- my ($http, $fh) = @_;
- sub {
- my ($self) = @_;
+sub event_step {
+ my ($self) = @_;
+ if (my $cb = delete $self->{cb}) {
+ # this may call async_pass when headers are done
+ $cb->(delete $self->{arg});
+ } elsif (my $sock = $self->{sock}) {
+ my $http = $self->{http};
# $self->{sock} is a read pipe for git-http-backend or cgit
# and 65536 is the default Linux pipe size
- my $r = sysread($self->{sock}, my $buf, 65536);
+ my $r = sysread($sock, my $buf, 65536);
if ($r) {
- $fh->write($buf); # may call $http->close
+ $self->{fh}->write($buf); # may call $http->close
if ($http->{sock}) { # !closed
$self->requeue;
# let other clients get some work done, too
@@ -56,11 +60,11 @@ sub main_cb ($$) {
return; # EPOLLET means we'll be notified
}
- # Done! Error handling will happen in $fh->close
- # called by the {end} handler
+ # Done! Error handling will happen in $self->{fh}->close
+ # called by end_obj->event_step handler
delete $http->{forward};
- $self->close; # queues ->{end} to be called
- }
+ $self->close; # queues end_obj->event_step to be called
+ } # else { # we may've been requeued but closed by $http
}
# once this is called, all data we read is passed to the
@@ -78,26 +82,24 @@ sub async_pass {
# calls after this may use much memory:
$$bref = undef;
- # replace the header read callback with the main one
- my $cb = $self->{cb} = main_cb($http, $fh);
- $cb->($self); # either hit EAGAIN or ->requeue to keep EPOLLET happy
-}
+ $self->{http} = $http;
+ $self->{fh} = $fh;
-sub event_step {
- # {cb} may be undef after ->requeue due to $http->close happening
- my $cb = $_[0]->{cb} or return;
- $cb->(@_);
+ # either hit EAGAIN or ->requeue to keep EPOLLET happy
+ event_step($self);
}
-# may be called as $forward->close in PublicInbox::HTTP or EOF (main_cb)
+# may be called as $forward->close in PublicInbox::HTTP or EOF (event_step)
sub close {
my $self = $_[0];
- delete $self->{cb};
$self->SUPER::close; # DS::close
# we defer this to the next timer loop since close is deferred
- if (my $end = delete $self->{end}) {
- PublicInbox::DS::requeue($end);
+ if (my $end_obj = delete $self->{end_obj}) {
+ # this calls $end_obj->event_step
+ # (likely PublicInbox::Qspawn::event_step,
+ # NOT PublicInbox::HTTPD::Async::event_step)
+ PublicInbox::DS::requeue($end_obj);
}
}