[PATCH 03 of 11] localrepo: add a cache with stat info for files under .hg/

[Idan Kamara]

# HG changeset patch
# User Idan Kamara <idankk86 at gmail.com>
# Date 1310826866 -10800
# Node ID 87ba99602fd72793e5e9871bc3e775b4ddfffa57
# Parent  b99305dd59279aec962e23da2a362e0d8b785965
localrepo: add a cache with stat info for files under .hg/

diff -r b99305dd5927 -r 87ba99602fd7 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Sat Jul 09 19:06:59 2011 +0300
+++ b/mercurial/localrepo.py	Sat Jul 16 17:34:26 2011 +0300
@@ -110,6 +110,11 @@
         self._datafilters = {}
         self._transref = self._lockref = self._wlockref = None
 
+        # A cache for various files under .hg/ with stat info, used by the
+        # filecache decorator. Keys are the decorated function names, with
+        # [cached object, last stat info, path to watched file] as value.
+        self._invalidatecache = {}
+
     def _applyrequirements(self, requirements):
         self.requirements = requirements
         openerreqs = set(('revlogv1', 'generaldelta'))
@@ -814,6 +819,19 @@
         self._lockref = weakref.ref(l)
         return l
 
+    def _updatestatinfo(self, key=None):
+        '''update stat info of the given key or all keys in the cache (except
+        dirstate)'''
+        if key:
+            e = self._invalidatecache[key]
+            e[1] = util.stat(e[2])
+        else:
+            for k in self._invalidatecache:
+                if k == 'dirstate':
+                    continue
+                e = self._invalidatecache[k]
+                e[1] = util.stat(e[2])
+
     def wlock(self, wait=True):
         '''Lock the non-store parts of the repository (everything under
         .hg except .hg/store) and return a weak reference to the lock.
diff -r b99305dd5927 -r 87ba99602fd7 mercurial/statichttprepo.py
--- a/mercurial/statichttprepo.py	Sat Jul 09 19:06:59 2011 +0300
+++ b/mercurial/statichttprepo.py	Sat Jul 16 17:34:26 2011 +0300
@@ -125,6 +125,7 @@
         self.encodepats = None
         self.decodepats = None
         self.capabilities.difference_update(["pushkey"])
+        self._invalidatecache = {}
 
     def url(self):
         return self._url