Patchwork [5,of,6,V4] changelog: add way to call the revsbetween C implementation

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Submitter Laurent Charignon
Date Aug. 7, 2015, 6:35 p.m.
Message ID <fc1351d02b62f64f628b.1438972553@dev919.prn2.facebook.com>
Download mbox | patch
Permalink /patch/10148/
State Changes Requested
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Laurent Charignon - Aug. 7, 2015, 6:35 p.m.
# HG changeset patch
# User Laurent Charignon <lcharignon@fb.com>
# Date 1438924231 25200
#      Thu Aug 06 22:10:31 2015 -0700
# Branch stable
# Node ID fc1351d02b62f64f628b363a598216e098b6fade
# Parent  faed533c701ba8924ef4f3cb88dbf759bde523d8
changelog: add way to call the revsbetween C implementation

This patch is part of a series of patches to speed up the computation of
revset.revsbetween by introducing a C implementation. The main motivation is to
speed up smartlog on big repositories. At the end of the series, on our big
repositories the computation of revsbetween is 10-50x faster and smartlog on is
2x-5x faster.

This patch allows us to call the new C implementation of revsbetween from
python by creating an entry point in the changelog class.

Patch

diff --git a/mercurial/changelog.py b/mercurial/changelog.py
--- a/mercurial/changelog.py
+++ b/mercurial/changelog.py
@@ -7,7 +7,7 @@ 
 
 from node import bin, hex, nullid
 from i18n import _
-import util, error, revlog, encoding
+import util, error, revlog, encoding, revset
 
 _defaultextra = {'branch': 'default'}
 
@@ -172,6 +172,15 @@ 
         self.rev(self.node(0))
         return self._nodecache
 
+    def revsbetween(self, minroot, heads, roots, includepath):
+        reachable = self.index.revsbetween(minroot, heads, roots, includepath)
+        if reachable is None:
+            # The C code hasn't been able to initialize a list, something went
+            # really wrong, let's rely on the pure implementation in that case
+            raise AttributeError()
+        else:
+            return revset.baseset(sorted(reachable))
+
     def headrevs(self):
         if self.filteredrevs:
             try: