##// END OF EJS Templates
upstream » mercurial-mirror
RSS

Clone from https://www.mercurial-scm.org/repo/hg-all

strip: make query to get new bookmark target cheaper...
strip: make query to get new bookmark target cheaper The current query to get the new bookmark target for stripped revisions involves multiple walks up the DAG, and is really expensive, taking over 2.5 seconds on a repository with over 400,000 changesets even if just one changeset is being stripped. A slightly simplified version of the current query is max(heads(::<tostrip> - <tostrip>)) We make two observations here. 1. For any set s, max(heads(s)) == max(s). That is because revision numbers define a topological order, so that the element with the highest revision number in s will not have any children in s. 2. For any set s, max(::s - s) == max(parents(s) - s). In other words, the ancestor of s with the highest revision number not in s is a parent of one of the revs in s. Why? Because if it were an ancestor but not a parent of s, it would have a descendant that would be a parent of s. This descendant would have a higher revision number, leading to a contradiction. Combining these two observations, we rewrite the revset query as max(parents(<tostrip>) - <tostrip>) The time complexity is now linear in the number of changesets being stripped. For the above repository, the query now takes 0.1 seconds when one changeset is stripped. This speeds up operations that use repair.strip, like the rebase and strip commands.
Matt Mackall - - Load All Authors

File last commit:

r10996:f6d41bfc default
r18040:fe8caf28 default
Show More
__init__.py
31 lines | 1.0 KiB | text/x-python | PythonLexer
/ mercurial / hgweb / __init__.py
History | Source | Raw |Copy content |Copy permalink
Eric Hopper
Fixing up comment headers for split up code.
 r2391 # hgweb/__init__.py - web interface to a mercurial repository
Eric Hopper
Moving hgweb.py into it's own module in preparation for breaking it up.
 r2311 #
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005 Matt Mackall <mpm@selenic.com>
#
Martin Geisler
updated license to be explicit about GPL version 2
 r8225 # This software may be used and distributed according to the terms of the
Matt Mackall
Update license to GPLv2+
 r10263 # GNU General Public License version 2 or any later version.
Eric Hopper
Moving hgweb.py into it's own module in preparation for breaking it up.
 r2311
Matt Mackall
hgweb: make hgweb.hgweb a unified interface to hgweb/hgwebdir
 r10996 import os
Matt Mackall
Replace demandload with new demandimport
 r3877 import hgweb_mod, hgwebdir_mod
Matt Mackall
hgweb: make hgweb.hgweb a unified interface to hgweb/hgwebdir
 r10996 def hgweb(config, name=None, baseui=None):
'''create an hgweb wsgi object
config can be one of:
- repo object (single repo view)
- path to repo (single repo view)
- path to config file (multi-repo view)
- dict of virtual:real pairs (multi-repo view)
- list of virtual:real tuples (multi-repo view)
'''
if ((isinstance(config, str) and not os.path.isdir(config)) or
isinstance(config, dict) or isinstance(config, list)):
# create a multi-dir interface
return hgwebdir_mod.hgwebdir(config, baseui=baseui)
return hgweb_mod.hgweb(config, name=name, baseui=baseui)
Matt Mackall
Replace demandload with new demandimport
 r3877
Matt Mackall
hgweb: make top-level prototypes mirror their callees
 r10992 def hgwebdir(config, baseui=None):
return hgwebdir_mod.hgwebdir(config, baseui=baseui)
Matt Mackall
Replace demandload with new demandimport
 r3877