# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 2017-07-15 21:49:22
# Node ID 460733327640dcb11f01b00325c91609fc58313f
# Parent  54b36d3ff7f6cf9d5081b6e205f992cc325be8d6

share: share 'cachevfs' with the source clone (issue5108)

Share extension now also share caches reads and writes. Not sharing caches
results in costly caches recomputations which can takes up to minutes when
using shares on large repositories.

There are a couple of file in the '.hg/cache/' that depends of the current
visibility. Visibility can be affected by the working copy location, something
which is specific to each share. We ignores them for this series because they:

* are the minority,
* already have a good fallback to other precomputed caches,
* are only affected when people use the experimental evolution feature.

diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -402,12 +402,14 @@ class localrepository(object):
                 if inst.errno != errno.ENOENT:
                     raise
 
+        cachepath = self.vfs.join('cache')
         self.sharedpath = self.path
         try:
             sharedpath = self.vfs.read("sharedpath").rstrip('\n')
             if 'relshared' in self.requirements:
                 sharedpath = self.vfs.join(sharedpath)
             vfs = vfsmod.vfs(sharedpath, realpath=True)
+            cachepath = vfs.join('cache')
             s = vfs.base
             if not vfs.exists():
                 raise error.RepoError(
@@ -423,7 +425,7 @@ class localrepository(object):
         self.svfs = self.store.vfs
         self.sjoin = self.store.join
         self.vfs.createmode = self.store.createmode
-        self.cachevfs = vfsmod.vfs(self.vfs.join('cache'))
+        self.cachevfs = vfsmod.vfs(cachepath)
         self.cachevfs.createmode = self.store.createmode
         if (self.ui.configbool('devel', 'all-warnings') or
             self.ui.configbool('devel', 'check-locks')):
diff --git a/tests/test-share.t b/tests/test-share.t
--- a/tests/test-share.t
+++ b/tests/test-share.t
@@ -24,6 +24,20 @@ share shouldn't have a store dir
   $ test -d .hg/store
   [1]
 
+share shouldn't have a cache dir, original repo should
+
+  $ hg branches
+  default                        0:d3873e73d99e
+  $ hg tags
+  tip                                0:d3873e73d99e
+  $ test -d .hg/cache
+  [1]
+  $ ls -1 ../repo1/.hg/cache
+  branch2-served
+  rbc-names-v1
+  rbc-revs-v1
+  tags2-visible
+
 Some sed versions appends newline, some don't, and some just fails
 
   $ cat .hg/sharedpath; echo