Mercurial > hg-stable
view tests/svn-safe-append.py @ 25716:d50677c3bf44
revset: prefetch method in "parents"
As already demonstrated, saving attribute lookup gains us some minor but
noticeable performance improvements.
revset #0: parents(all())
before) 0.024169
after ) 0.022756 94%
author | Pierre-Yves David <pierre-yves.david@fb.com> |
---|---|
date | Thu, 02 Jul 2015 23:46:18 -0700 |
parents | c1b47c0fd2b6 |
children | bdba6a2015d0 |
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#!/usr/bin/env python __doc__ = """Same as `echo a >> b`, but ensures a changed mtime of b. Without this svn will not detect workspace changes.""" import sys, os text = sys.argv[1] fname = sys.argv[2] f = open(fname, "ab") try: before = os.fstat(f.fileno()).st_mtime f.write(text) f.write("\n") finally: f.close() inc = 1 now = os.stat(fname).st_mtime while now == before: t = now + inc inc += 1 os.utime(fname, (t, t)) now = os.stat(fname).st_mtime