Mercurial > hg
view tests/revnamesext.py @ 33799:05264fc9d8d6
util: make nogc effective for CPython
279cd80059d4 made `util.nogc` a no-op. It was to optimize PyPy. But it slows
down CPython if many objects (like 300k+) are created.
For example, running `hg log -r .` without extensions in `hg-committed` with
14k+ obsmarkers have the following times:
before | after
hg | chg | hg | chg
-----------------------------
1.262 | 0.860 | 1.077 | 0.619 (seconds, best of 20 runs)
Therefore let's re-enable nogc for CPython.
Differential Revision: https://phab.mercurial-scm.org/D402
author | Jun Wu <quark@fb.com> |
---|---|
date | Mon, 14 Aug 2017 22:28:59 -0700 |
parents | 46fa46608ca5 |
children | 086fc71fbb09 |
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# Dummy extension to define a namespace containing revision names from __future__ import absolute_import from mercurial import ( namespaces, ) def reposetup(ui, repo): names = {'r%d' % rev: repo[rev].node() for rev in repo} namemap = lambda r, name: names.get(name) nodemap = lambda r, node: ['r%d' % repo[node].rev()] ns = namespaces.namespace('revnames', templatename='revname', logname='revname', listnames=lambda r: names.keys(), namemap=namemap, nodemap=nodemap) repo.names.addnamespace(ns)