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cvsserver: detect early of we are up to date and avoid costly rev-list 

if the SHA1 of our head matches the last SHA1 seen in the DB, avoid further
processing.

[jc: an "Oops, please amend" patch rolled in]

Signed-off-by: Martin Langhoff <martin@catalyst.net.nz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Martin Langhoff 2007-01-09 15:10:32 +13:00 committed by Junio C Hamano
parent 041e69c998
commit 49fb940e40
1 changed files with 8 additions and 1 deletions
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9
git-cvsserver.perl
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@ -2184,7 +2184,10 @@ sub update
# first lets get the commit list
$ENV{GIT_DIR} = $self->{git_path};
my $commitinfo = `git-cat-file commit $self->{module} 2>&1`;
my $commitsha1 = `git rev-parse $self->{module}`;
chomp $commitsha1;
my $commitinfo = `git cat-file commit $self->{module} 2>&1`;
unless ( $commitinfo =~ /tree\s+[a-zA-Z0-9]{40}/ )
{
die("Invalid module '$self->{module}'");
@ -2194,6 +2197,10 @@ sub update
my $git_log;
my $lastcommit = $self->_get_prop("last_commit");
if (defined $lastcommit && $lastcommit eq $commitsha1) { # up-to-date
return 1;
}
# Start exclusive lock here...
$self->{dbh}->begin_work() or die "Cannot lock database for BEGIN";