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| -rw-r--r-- | doc/todo/Improving_the_efficiency_of_match__95__glob.mdwn | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/doc/todo/Improving_the_efficiency_of_match__95__glob.mdwn b/doc/todo/Improving_the_efficiency_of_match__95__glob.mdwn new file mode 100644 index 000000000..8f70f1dde --- /dev/null +++ b/doc/todo/Improving_the_efficiency_of_match__95__glob.mdwn @@ -0,0 +1,39 @@ +I've been profiling my IkiWiki to try to improve speed (with many pages makes speed even more important) and I've written a patch to improve the speed of match_glob. This matcher is a good one to improve the speed of, because it gets called so many times. + +Here's my patch - please consider it! -- [[KathrynAndersen]] + +-------------------------------------------------------------- +<pre> +diff --git a/IkiWiki.pm b/IkiWiki.pm +index 08a3d78..c187b98 100644 +--- a/IkiWiki.pm ++++ b/IkiWiki.pm +@@ -2482,6 +2482,8 @@ sub derel ($$) { + return $path; + } + ++my %glob_cache; ++ + sub match_glob ($$;@) { + my $page=shift; + my $glob=shift; +@@ -2489,8 +2491,15 @@ sub match_glob ($$;@) { + + $glob=derel($glob, $params{location}); + +- my $regexp=IkiWiki::glob2re($glob); +- if ($page=~/^$regexp$/i) { ++ # Instead of converting the glob to a regex every time, ++ # cache the compiled regex to save time. ++ if (!exists $glob_cache{$glob} ++ or !defined $glob_cache{$glob}) ++ { ++ my $re=IkiWiki::glob2re($glob); ++ $glob_cache{$glob} = qr/^$re$/i; ++ } ++ if ($page =~ $glob_cache{$glob}) { + if (! IkiWiki::isinternal($page) || $params{internal}) { + return IkiWiki::SuccessReason->new("$glob matches $page"); + } +</pre> +-------------------------------------------------------------- |