daemon: dedupe PublicInbox::Config objects by pathname

[public-inbox.git] / lib / PublicInbox / Config.pm

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index a31b5b74c7c7282ba1e3bb83e7fcc6603b7427bb..ad8b8e9dc18cdecb87e44a6aa1fe81ed20692f03 100644 (file)
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -13,6 +13,7 @@ use v5.10.1;
 use PublicInbox::Inbox;
 use PublicInbox::Spawn qw(popen_rd);
 our $LD_PRELOAD = $ENV{LD_PRELOAD}; # only valid at startup
+our $DEDUPE; # set to {} to dedupe or clear cache
 
 sub _array ($) { ref($_[0]) eq 'ARRAY' ? $_[0] : [ $_[0] ] }
 
@@ -22,11 +23,17 @@ sub new {
        my ($class, $file, $errfh) = @_;
        $file //= default_file();
        my $self;
+       my $set_dedupe;
        if (ref($file) eq 'SCALAR') { # used by some tests
                open my $fh, '<', $file or die;  # PerlIO::scalar
                $self = config_fh_parse($fh, "\n", '=');
                bless $self, $class;
        } else {
+               if (-f $file && $DEDUPE) {
+                       $file = rel2abs_collapsed($file);
+                       $self = $DEDUPE->{$file} and return $self;
+                       $set_dedupe = 1;
+               }
                $self = git_config_dump($class, $file, $errfh);
                $self->{'-f'} = $file;
        }
@@ -62,7 +69,7 @@ sub new {
        if (my $css = delete $self->{'publicinbox.css'}) {
                $self->{css} = _array($css);
        }
-
+       $DEDUPE->{$file} = $self if $set_dedupe;
        $self;
 }