Optimised file statting code when scanning for modified pages; cut the number of...

diff --git a/IkiWiki.pm b/IkiWiki.pm
index 98145a585efda00b7110db7762b3be7106c169c9..88407584fbf7f8f2b3c51de7a6cfd16df57626be 100644 (file)
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -282,18 +282,22 @@ sub htmlpage ($) { #{{{
        return targetpage($page, $config{htmlext});
 } #}}}
 
-sub srcfile ($;$) { #{{{
+sub srcfile_stat { #{{{
        my $file=shift;
        my $nothrow=shift;
 
-       return "$config{srcdir}/$file" if -e "$config{srcdir}/$file";
+       return "$config{srcdir}/$file", stat(_) if -e "$config{srcdir}/$file";
        foreach my $dir (@{$config{underlaydirs}}, $config{underlaydir}) {
-               return "$dir/$file" if -e "$dir/$file";
+               return "$dir/$file", stat(_) if -e "$dir/$file";
        }
        error("internal error: $file cannot be found in $config{srcdir} or underlay") unless $nothrow;
        return;
 } #}}}
 
+sub srcfile ($;$) { #{{{
+       return (srcfile_stat(@_))[0];
+} #}}}
+
 sub add_underlay ($) { #{{{
        my $dir=shift;
 

diff --git a/IkiWiki/Plugin/inline.pm b/IkiWiki/Plugin/inline.pm
index 40f6aa81decaafa62ca5c12fa27aa3d46a9ee417..d7117b6117a2c8407b8c551eedd77afcc06d59f4 100644 (file)
--- a/IkiWiki/Plugin/inline.pm
+++ b/IkiWiki/Plugin/inline.pm
@@ -445,7 +445,7 @@ sub genfeed ($$$$@) { #{{{
                                $itemtemplate->param(content => $pcontent);
                        }
                        else {
-                               my ($a, $b, $c, $d, $e, $f, $g, $size) = stat(srcfile($file));
+                               my $size=(srcfile_stat($file))[8];
                                my $mime="unknown";
                                eval q{use File::MimeInfo};
                                if (! $@) {

diff --git a/IkiWiki/Render.pm b/IkiWiki/Render.pm
index 18324914b0f1535659e5909dd2fcee28a536c43d..959279fc8a906508db1d1b8561cd390e5cc62326 100644 (file)
--- a/IkiWiki/Render.pm
+++ b/IkiWiki/Render.pm
@@ -146,12 +146,6 @@ sub genpage ($$) { #{{{
        return $content;
 } #}}}
 
-sub mtime ($) { #{{{
-       my $file=shift;
-       
-       return (stat($file))[9];
-} #}}}
-
 sub scan ($) { #{{{
        my $file=shift;
 
@@ -283,7 +277,7 @@ sub refresh () { #{{{
                        if (file_pruned($_, $config{srcdir})) {
                                $File::Find::prune=1;
                        }
-                       elsif (! -d $_ && ! -l $_) {
+                       elsif (! -l $_ && ! -d _) {
                                my ($f)=/$config{wiki_file_regexp}/; # untaint
                                if (! defined $f) {
                                        warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
@@ -304,7 +298,7 @@ sub refresh () { #{{{
                                if (file_pruned($_, $dir)) {
                                        $File::Find::prune=1;
                                }
-                               elsif (! -d $_ && ! -l $_) {
+                               elsif (! -l $_ && ! -d _) {
                                        my ($f)=/$config{wiki_file_regexp}/; # untaint
                                        if (! defined $f) {
                                                warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
@@ -314,8 +308,8 @@ sub refresh () { #{{{
                                                # avoid underlaydir
                                                # override attacks; see
                                                # security.mdwn
-                                               if (! -e "$config{srcdir}/$f" && 
-                                                   ! -l "$config{srcdir}/$f") {
+                                               if (! -l "$config{srcdir}/$f" && 
+                                                   ! -e _) {
                                                        my $page=pagename($f);
                                                        if (! $exists{$page}) {
                                                                push @files, $f;
@@ -329,7 +323,6 @@ sub refresh () { #{{{
        };
 
        my (%rendered, @add, @del, @internal);
-
        # check for added or removed pages
        foreach my $file (@files) {
                my $page=pagename($file);
@@ -352,7 +345,7 @@ sub refresh () { #{{{
                        }
                        $pagecase{lc $page}=$page;
                        if (! exists $pagectime{$page}) {
-                               $pagectime{$page}=mtime(srcfile($file));
+                               $pagectime{$page}=(srcfile_stat($file))[10];
                        }
                }
        }
@@ -383,16 +376,15 @@ sub refresh () { #{{{
        my @needsbuild;
        foreach my $file (@files) {
                my $page=pagename($file);
-               
-               my $mtime=mtime(srcfile($file));
+               my ($srcfile, @stat)=srcfile_stat($file);
                if (! exists $pagemtime{$page} ||
-                   $mtime > $pagemtime{$page} ||
+                   $stat[9] > $pagemtime{$page} ||
                    $forcerebuild{$page}) {
-                       $pagemtime{$page}=$mtime;
+                       $pagemtime{$page}=$stat[9];
                        if (isinternal($page)) {
                                push @internal, $file;
                                # Preprocess internal page in scan-only mode.
-                               preprocess($page, $page, readfile(srcfile($file)), 1);
+                               preprocess($page, $page, readfile($srcfile), 1);
                        }
                        else {
                                push @needsbuild, $file;
@@ -535,7 +527,7 @@ sub commandline_render () { #{{{
        $content=preprocess($page, $page, $content);
        $content=linkify($page, $page, $content);
        $content=htmlize($page, $type, $content);
-       $pagemtime{$page}=mtime($srcfile);
+       $pagemtime{$page}=(stat($srcfile))[9];
 
        print genpage($page, $content);
        exit 0;

diff --git a/debian/changelog b/debian/changelog
index 4eeb6d0efbe0f09853a8cb28332e5e430580a353..3ff3f0087c6526d3b3e2958e3c24017609bde4d3 100644 (file)
--- a/debian/changelog
+++ b/debian/changelog
@@ -5,6 +5,8 @@ ikiwiki (2.46) UNRELEASED; urgency=low
     via the `aggregate_webtrigger` configuration optiom.
   * Add pinger and pingee plugins, which allow setting up mirrors and branched
     wikis that automatically ping one another to stay up to date.
+  * Optimised file statting code when scanning for modified pages;
+    cut the number of system calls in half. (Still room for improvement.)
 
  -- Joey Hess <joeyh@debian.org>  Mon, 05 May 2008 19:34:51 -0400