# HG changeset patch
# User Durham Goode <durham@fb.com>
# Date 1423627572 28800
# Node ID 656f93ce66d57776843748387680429ea6cb674a
# Parent  203a078da052b0476656b8b01ae7f8b809b16b0f
revbranchcache: move cache writing to the transaction finalizer

Instead of writing the revbranchcache during updatecache (which often happens
too early, before the cache is even populated), let's run it as part of the
transaction finalizer. It still won't be written for read-only operations, but
that's no worse than it is today.

A future commit will remove the actual write that happens in updatecache().

This is also good prep for when all caches get moved into the transaction.

diff -r 203a078da052 -r 656f93ce66d5 mercurial/branchmap.py
--- a/mercurial/branchmap.py	Tue Feb 10 20:04:47 2015 -0800
+++ b/mercurial/branchmap.py	Tue Feb 10 20:06:12 2015 -0800
@@ -414,7 +414,11 @@
         self._rbcrevs[rbcrevidx:rbcrevidx + _rbcrecsize] = rec
         self._rbcrevslen = min(self._rbcrevslen, rev)
 
-    def write(self):
+        tr = self._repo.currenttransaction()
+        if tr:
+            tr.addfinalize('write-revbranchcache', self.write)
+
+    def write(self, tr=None):
         """Save branch cache if it is dirty."""
         repo = self._repo
         if self._rbcnamescount < len(self._names):
diff -r 203a078da052 -r 656f93ce66d5 mercurial/statichttprepo.py
--- a/mercurial/statichttprepo.py	Tue Feb 10 20:04:47 2015 -0800
+++ b/mercurial/statichttprepo.py	Tue Feb 10 20:06:12 2015 -0800
@@ -144,6 +144,7 @@
         self._revbranchcache = None
         self.encodepats = None
         self.decodepats = None
+        self._transref = None
 
     def _restrictcapabilities(self, caps):
         caps = super(statichttprepository, self)._restrictcapabilities(caps)