From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 06/11] config: split out iterator into separate object
Date: Wed, 9 Sep 2020 06:26:13 +0000 [thread overview]
Message-ID: <20200909062618.5940-7-e@80x24.org> (raw)
In-Reply-To: <20200909062618.5940-1-e@80x24.org>
We will need to allow simultaneous iterators on the same
config object, since we'll need this for ExtMsg, NNTPD,
WwwListing, NewsWWW, and other places.
---
MANIFEST | 1 +
lib/PublicInbox/Config.pm | 18 ------------------
lib/PublicInbox/ConfigIter.pm | 28 ++++++++++++++++++++++++++++
lib/PublicInbox/IMAPD.pm | 6 ++++--
4 files changed, 33 insertions(+), 20 deletions(-)
create mode 100644 lib/PublicInbox/ConfigIter.pm
diff --git a/MANIFEST b/MANIFEST
index 0e225b6a..04a3744f 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -107,6 +107,7 @@ lib/PublicInbox/AltId.pm
lib/PublicInbox/Cgit.pm
lib/PublicInbox/CompressNoop.pm
lib/PublicInbox/Config.pm
+lib/PublicInbox/ConfigIter.pm
lib/PublicInbox/ContentHash.pm
lib/PublicInbox/DS.pm
lib/PublicInbox/DSKQXS.pm
diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index f78115b6..8ccf337d 100644
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -99,24 +99,6 @@ sub each_inbox {
}
}
-sub iterate_start {
- my ($self, $cb, @arg) = @_;
- my $i = 0;
- $self->{-iter} = [ \$i, $cb, @arg ];
-}
-
-# for PublicInbox::DS::next_tick, we only call this is if
-# PublicInbox::DS is already loaded
-sub event_step {
- my ($self) = @_;
- my ($i, $cb, @arg) = @{$self->{-iter}};
- my $section = $self->{-section_order}->[$$i++];
- delete($self->{-iter}) unless defined($section);
- eval { $cb->($self, $section, @arg) };
- warn "E: $@ in ${self}::event_step" if $@;
- PublicInbox::DS::requeue($self) if defined($section);
-}
-
sub lookup_newsgroup {
my ($self, $ng) = @_;
_lookup_fill($self, '-by_newsgroup', lc($ng));
diff --git a/lib/PublicInbox/ConfigIter.pm b/lib/PublicInbox/ConfigIter.pm
new file mode 100644
index 00000000..26cc70e2
--- /dev/null
+++ b/lib/PublicInbox/ConfigIter.pm
@@ -0,0 +1,28 @@
+# Copyright (C) 2020 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# Intended for PublicInbox::DS->EventLoop in read-only daemons
+# to avoid each_inbox() monopolizing the event loop when hundreds/thousands
+# of inboxes are in play.
+package PublicInbox::ConfigIter;
+use strict;
+use v5.10.1;
+
+sub new {
+ my ($class, $pi_cfg, $cb, @args) = @_;
+ my $i = 0;
+ bless [ $pi_cfg, \$i, $cb, @args ], __PACKAGE__;
+}
+
+# for PublicInbox::DS::next_tick, we only call this is if
+# PublicInbox::DS is already loaded
+sub event_step {
+ my $self = shift;
+ my ($pi_cfg, $i, $cb, @arg) = @$self;
+ my $section = $pi_cfg->{-section_order}->[$$i++];
+ eval { $cb->($pi_cfg, $section, @arg) };
+ warn "E: $@ in ${self}::event_step" if $@;
+ PublicInbox::DS::requeue($self) if defined($section);
+}
+
+1;
diff --git a/lib/PublicInbox/IMAPD.pm b/lib/PublicInbox/IMAPD.pm
index 09bedf5c..3c211ee1 100644
--- a/lib/PublicInbox/IMAPD.pm
+++ b/lib/PublicInbox/IMAPD.pm
@@ -6,6 +6,7 @@
package PublicInbox::IMAPD;
use strict;
use PublicInbox::Config;
+use PublicInbox::ConfigIter;
use PublicInbox::InboxIdle;
use PublicInbox::IMAP;
use PublicInbox::DummyInbox;
@@ -98,8 +99,9 @@ sub refresh_groups {
my $pi_config = PublicInbox::Config->new;
if ($sig) { # SIGHUP is handled through the event loop
$self->{imapd_next} = { dummies => {}, mailboxes => {} };
- $pi_config->iterate_start(\&imapd_refresh_step, $self);
- PublicInbox::DS::requeue($pi_config); # call event_step
+ my $iter = PublicInbox::ConfigIter->new($pi_config,
+ \&imapd_refresh_step, $self);
+ $iter->event_step;
} else { # initial start is synchronous
$self->{dummies} = {};
$pi_config->each_inbox(\&imapd_refresh_ibx, $self);
next prev parent reply other threads:[~2020-09-09 6:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 6:26 [PATCH 00/11] httpd: further reduce event loop monopolization Eric Wong
2020-09-09 6:26 ` [PATCH 01/11] xt/solver: test with public-inbox-httpd, too Eric Wong
2020-09-09 6:26 ` [PATCH 02/11] solver: drop warnings, modernize use v5.10.1, use SEEK_SET Eric Wong
2020-09-09 6:26 ` [PATCH 03/11] use "\&" where possible when referring to subroutines Eric Wong
2020-09-09 6:26 ` [PATCH 04/11] www: manifest.js.gz generation no longer hogs event loop Eric Wong
2020-09-09 6:26 ` [PATCH 05/11] config: flatten each_inbox and iterate_start args Eric Wong
2020-09-09 6:26 ` Eric Wong [this message]
2020-09-09 6:26 ` [PATCH 07/11] t/cgi.t: show stderr on failures Eric Wong
2020-09-09 6:26 ` [PATCH 08/11] extmsg: prevent cross-inbox matches from hogging event loop Eric Wong
2020-09-09 6:26 ` [PATCH 09/11] wwwlisting: avoid " Eric Wong
2020-09-09 6:26 ` [PATCH 10/11] solver: check one git coderepo and inbox at a time Eric Wong
2020-09-09 6:26 ` [PATCH 11/11] solver: break apart inbox blob retrieval Eric Wong
2020-09-10 1:51 ` [PATCH 12/11] solver: async blob retrieval for diff extraction Eric Wong
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