* aggregate: Fork a child process to handle the aggregation. This simplifies

  the code, since that process can change internal state as needed, and
  it will automatically be cleaned up for the parent process, which proceeds
  to render the changes.

diff --git a/IkiWiki/Plugin/aggregate.pm b/IkiWiki/Plugin/aggregate.pm
index 0da527f25e7bff733b0f64473e6fc7f67d323982..09ea5902938b16030ab75ced886288a4e5497454 100644 (file)
--- a/IkiWiki/Plugin/aggregate.pm
+++ b/IkiWiki/Plugin/aggregate.pm
@@ -37,14 +37,25 @@ sub checkconfig () { #{{{
                        debug("wiki is locked by another process, not aggregating");
                        exit 1;
                }
-       
-               loadstate();
-               IkiWiki::loadindex();
-               aggregate();
-               expire();
-               savestate();
-               clearstate();
-
+               
+               # Fork a child process to handle the aggregation.
+               # The parent process will then handle building the result.
+               # This avoids messy code to clear state accumulated while
+               # aggregating.
+               defined(my $pid = fork) or error("Can’t fork: $!");
+               if (! $pid) {
+                       loadstate();
+                       IkiWiki::loadindex();
+                       aggregate();
+                       expire();
+                       savestate();
+                       exit 0;
+               }
+               waitpid($pid,0);
+               if ($?) {
+                       error "aggregation failed with code $?";
+               }
+               
                IkiWiki::unlockwiki();
        }
 } #}}}
@@ -211,12 +222,6 @@ sub savestate () { #{{{
                error("rename $newfile: $!", $cleanup);
 } #}}}
 
-sub clearstate () { #{{{
-       %feeds=();
-       %guids=();
-       $state_loaded=0;
-} #}}}
-
 sub expire () { #{{{
        foreach my $feed (values %feeds) {
                next unless $feed->{expireage} || $feed->{expirecount};

diff --git a/debian/changelog b/debian/changelog
index f5e0b242ebe61903c21e86483c89fe27b2feb02e..d2fed8767372ba33855986b74a1395f1085fb7ed 100644 (file)
--- a/debian/changelog
+++ b/debian/changelog
@@ -5,6 +5,10 @@ ikiwiki (2.21) UNRELEASED; urgency=low
     those older versions too.
   * aggregate: Don't let feeds set creation times for pages in the future.
   * Add full parser for git diff-tree output (Brian Downing)
+  * aggregate: Fork a child process to handle the aggregation. This simplifies
+    the code, since that process can change internal state as needed, and 
+    it will automatically be cleaned up for the parent process, which proceeds
+    to render the changes.
 
  -- Joey Hess <joeyh@debian.org>  Fri, 11 Jan 2008 15:09:37 -0500