[PATCH 3 of 9 phases] phases: add rollback support

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at ens-lyon.org>
# Date 1320665245 -3600
# Node ID d43b2f573a95d9a6393e0dac145fa1e08b991540
# Parent  a0fe3423a8529ef611dc1439bcc243f2e6781691
phases: add rollback support

diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -758,10 +758,16 @@
             util.copyfile(bkname, self.join('journal.bookmarks'))
         else:
             self.opener.write('journal.bookmarks', '')
+        phasesname = self.sjoin('phaseroots')
+        if os.path.exists(phasesname):
+            util.copyfile(phasesname, self.sjoin('journal.phaseroots'))
+        else:
+            self.sopener.write('journal.phaseroots', '')
 
         return (self.sjoin('journal'), self.join('journal.dirstate'),
                 self.join('journal.branch'), self.join('journal.desc'),
-                self.join('journal.bookmarks'))
+                self.join('journal.bookmarks'),
+                self.sjoin('journal.phaseroots'))
 
     def recover(self):
         lock = self.lock()
@@ -826,6 +832,9 @@
         if os.path.exists(self.join('undo.bookmarks')):
             util.rename(self.join('undo.bookmarks'),
                         self.join('bookmarks'))
+        if os.path.exists(self.sjoin('undo.phaseroots')):
+            util.rename(self.sjoin('undo.phaseroots'),
+                        self.sjoin('phaseroots'))
         self.invalidate()
 
         parentgone = (parents[0] not in self.changelog.nodemap or
diff --git a/tests/test-fncache.t b/tests/test-fncache.t
--- a/tests/test-fncache.t
+++ b/tests/test-fncache.t
@@ -80,6 +80,7 @@
   .hg/undo.branch
   .hg/undo.desc
   .hg/undo.dirstate
+  .hg/undo.phaseroots
   $ cd ..
 
 Non fncache repo:
@@ -103,6 +104,7 @@
   .hg/store/data/tst.d.hg
   .hg/store/data/tst.d.hg/_foo.i
   .hg/store/undo
+  .hg/store/undo.phaseroots
   .hg/undo.bookmarks
   .hg/undo.branch
   .hg/undo.desc
diff --git a/tests/test-hardlinks.t b/tests/test-hardlinks.t
--- a/tests/test-hardlinks.t
+++ b/tests/test-hardlinks.t
@@ -46,6 +46,7 @@
   1 r1/.hg/store/data/f1.i
   1 r1/.hg/store/fncache
   1 r1/.hg/store/undo
+  1 r1/.hg/store/undo.phaseroots
 
 
 Create hardlinked clone r2:
@@ -74,6 +75,7 @@
   2 r1/.hg/store/data/f1.i
   2 r1/.hg/store/fncache
   1 r1/.hg/store/undo
+  1 r1/.hg/store/undo.phaseroots
 
   $ nlinksdir r2/.hg/store
   2 r2/.hg/store/00changelog.i
@@ -91,6 +93,7 @@
   1 r3/.hg/store/data/f1.i
   1 r3/.hg/store/fncache
   1 r3/.hg/store/undo
+  1 r3/.hg/store/undo.phaseroots
 
 
 Create a non-inlined filelog in r3:
@@ -111,6 +114,7 @@
   1 r3/.hg/store/data/f1.i
   1 r3/.hg/store/fncache
   1 r3/.hg/store/undo
+  1 r3/.hg/store/undo.phaseroots
 
 Push to repo r1 should break up most hardlinks in r2:
 
@@ -194,6 +198,7 @@
   2 r4/.hg/store/data/f1.i
   2 r4/.hg/store/fncache
   2 r4/.hg/store/undo
+  2 r4/.hg/store/undo.phaseroots
   2 r4/.hg/undo.bookmarks
   2 r4/.hg/undo.branch
   2 r4/.hg/undo.desc
@@ -223,6 +228,7 @@
   2 r4/.hg/store/data/f1.i
   2 r4/.hg/store/fncache
   2 r4/.hg/store/undo
+  2 r4/.hg/store/undo.phaseroots
   2 r4/.hg/undo.bookmarks
   2 r4/.hg/undo.branch
   2 r4/.hg/undo.desc
diff --git a/tests/test-hup.t b/tests/test-hup.t
--- a/tests/test-hup.t
+++ b/tests/test-hup.t
@@ -17,4 +17,4 @@
   rollback completed
   killed!
   $ echo .hg/* .hg/store/*
-  .hg/00changelog.i .hg/journal.bookmarks .hg/journal.branch .hg/journal.desc .hg/journal.dirstate .hg/requires .hg/store .hg/store/00changelog.i .hg/store/00changelog.i.a
+  .hg/00changelog.i .hg/journal.bookmarks .hg/journal.branch .hg/journal.desc .hg/journal.dirstate .hg/requires .hg/store .hg/store/00changelog.i .hg/store/00changelog.i.a .hg/store/journal.phaseroots
diff --git a/tests/test-inherit-mode.t b/tests/test-inherit-mode.t
--- a/tests/test-inherit-mode.t
+++ b/tests/test-inherit-mode.t
@@ -77,6 +77,7 @@
   00660 ./.hg/store/data/foo.i
   00660 ./.hg/store/fncache
   00660 ./.hg/store/undo
+  00660 ./.hg/store/undo.phaseroots
   00660 ./.hg/undo.bookmarks
   00660 ./.hg/undo.branch
   00660 ./.hg/undo.desc
@@ -118,6 +119,7 @@
   00660 ../push/.hg/store/data/foo.i
   00660 ../push/.hg/store/fncache
   00660 ../push/.hg/store/undo
+  00660 ../push/.hg/store/undo.phaseroots
   00660 ../push/.hg/undo.bookmarks
   00660 ../push/.hg/undo.branch
   00660 ../push/.hg/undo.desc