hidden: remove _consistencyblockers()
authorMartin von Zweigbergk <martinvonz@google.com>
Sat, 27 May 2017 22:55:19 -0700
changeset 32590 c777dac2b27c
parent 32589 306bba74c56e
child 32591 2af0b9a02bf9
hidden: remove _consistencyblockers() Roughly speaking, we currently do this to reveal hidden ancestors of visible revisions: 1. Iterate over all visible non-public revisions and see if they have hidden parents 2. For each revision found in step (1) walk the chain of hidden commits and reveal it We can simplify that by skipping step (1) and doing step (2) from all visible non-public revisions instead. This doesn't seem to have much impact on "perfvolatilesets". Before: ! obsolete ! wall 0.004616 comb 0.000000 user 0.000000 sys 0.000000 (best of 570) ! visible ! wall 0.008235 comb 0.010000 user 0.010000 sys 0.000000 (best of 326) After: ! obsolete ! wall 0.004727 comb 0.010000 user 0.010000 sys 0.000000 (best of 543) ! visible ! wall 0.008371 comb 0.000000 user 0.000000 sys 0.000000 (best of 324)
mercurial/repoview.py
--- a/mercurial/repoview.py	Sat May 27 22:43:37 2017 -0700
+++ b/mercurial/repoview.py	Sat May 27 22:55:19 2017 -0700
@@ -44,19 +44,6 @@
         pinned.update(rev(t[0]) for t in tags.values() if t[0] in nodemap)
     return pinned
 
-def _consistencyblocker(pfunc, hideable, revs):
-    """return non-hideable changeset blocking hideable one
-
-    For consistency, we cannot actually hide a changeset if one of it children
-    are visible, this function find such children.
-    """
-    blockers = set()
-    for r in revs:
-        for p in pfunc(r):
-            if p != nullrev and p in hideable:
-                blockers.add(r)
-                break
-    return blockers
 
 def _revealancestors(pfunc, hidden, revs):
     """reveals contiguous chains of hidden ancestors of 'revs' by removing them
@@ -89,16 +76,12 @@
         mutablephases = (phases.draft, phases.secret)
         mutable = repo._phasecache.getrevset(repo, mutablephases)
 
-        visible = mutable - hidden
-        blockers = _consistencyblocker(pfunc, hidden, visible)
-
-        # check if we have wd parents, bookmarks or tags pointing to hidden
-        # changesets and remove those.
-        blockers |= (hidden & pinnedrevs(repo))
-        if blockers:
+        visible = set(mutable - hidden)
+        visible |= (hidden & pinnedrevs(repo))
+        if visible:
             # don't modify possibly cached result of hideablerevs()
             hidden = hidden.copy()
-            _revealancestors(pfunc, hidden, blockers)
+            _revealancestors(pfunc, hidden, visible)
     return frozenset(hidden)
 
 def computeunserved(repo):