# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@ens-lyon.org>
# Date 1493619146 -7200
# Node ID 8199204274f0b35adf542fafba84a5bd9991f45f
# Parent  32cdcf493567c55bc8f412af0fc23af3b1733ad1
perf: use the cache to compute the obsolete set.


The official "obsolete" computation is switch to  using the cache. This provide
noticable speed for operation that does not need to actually access the
obs markers. The part relating to obsolete changeset computation disappear from
the execution profile when it is used.

diff -r 32cdcf493567 -r 8199204274f0 README
--- a/README	Mon May 01 08:14:00 2017 +0200
+++ b/README	Mon May 01 08:12:26 2017 +0200
@@ -117,6 +117,7 @@
 
  - improve message about obsolete working copy parent,
  - improve message issued  when accessing hidden nodes,
+ - introduce a new caches to reduce the impact of evolution on read-only commands,
  - add a 'experimental.auto-publish' config. Set it so 'warn' to get a warning
    when a push is publishing some draft changesets and 'abort' to prevent that
    to happen at all.
diff -r 32cdcf493567 -r 8199204274f0 hgext3rd/evolve/obscache.py
--- a/hgext3rd/evolve/obscache.py	Mon May 01 08:14:00 2017 +0200
+++ b/hgext3rd/evolve/obscache.py	Mon May 01 08:12:26 2017 +0200
@@ -308,6 +308,24 @@
         self._cachekey = struct.unpack(self._headerformat, data[:headersize])
         self._data = bytearray(data[headersize:])
 
+def _computeobsoleteset(repo):
+    """the set of obsolete revisions"""
+    obs = set()
+    notpublic = repo._phasecache.getrevset(repo, (phases.draft, phases.secret))
+    if notpublic:
+        repo = repo.unfiltered()
+        obscache = repo.obsstore.obscache
+        obscache.update(repo)
+        isobs = obscache.get
+    for r in notpublic:
+        if isobs(r):
+            obs.add(r)
+    return obs
+
+@eh.uisetup
+def cachefuncs(ui):
+    obsolete.cachefuncs['obsolete'] = _computeobsoleteset
+
 @eh.reposetup
 def setupcache(ui, repo):