revlog: optimize ancestors() to not check filtered revisions for each
While reviewing the Rust implementation, I noticed iter(ancestors) doesn't
need to check filtering state for each parent revision. And doing that appears
to have some measurable perf win.
$ hg perfancestors -R mercurial
(orig) wall 0.038093 comb 0.040000 user 0.040000 sys 0.000000 (best of 100)
(this) wall 0.024795 comb 0.020000 user 0.020000 sys 0.000000 (best of 117)
#!/usr/bin/env python
#
# An example hgweb CGI script, edit as necessary
# See also https://mercurial-scm.org/wiki/PublishingRepositories
# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = "/path/to/repo/or/config"
# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
#import sys; sys.path.insert(0, "/path/to/python/lib")
# Uncomment to send python tracebacks to the browser if an error occurs:
#import cgitb; cgitb.enable()
from mercurial import demandimport; demandimport.enable()
from mercurial.hgweb import hgweb, wsgicgi
application = hgweb(config)
wsgicgi.launch(application)