##// END OF EJS Templates
rust: Preallocate the returned `Vec` in `utils::files::relativize_path`...
rust: Preallocate the returned `Vec` in `utils::files::relativize_path` Profiling `rhg files > /dev/null` on an old snapshot of mozilla-central (with `perf` and the Firefox Profiler: https://github.com/firefox-devtools/profiler/blob/main/docs-user/guide-perf-profiling.md) showed non-trivial time spend in this function and in `realloc`. This change makes the wall-clock time for that process on my machine go from ~190 ms to ~150 ms. Differential Revision: https://phab.mercurial-scm.org/D10199

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revset.py
57 lines | 1.6 KiB | text/x-python | PythonLexer
# revset.py - asv revset benchmarks
#
# Copyright 2016 Logilab SA <contact@logilab.fr>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''ASV revset benchmarks generated from contrib/base-revsets.txt
Each revset benchmark is parameterized with variants (first, last, sort, ...)
'''
from __future__ import absolute_import
import os
import string
import sys
from . import basedir, perfbench
def createrevsetbenchmark(baseset, variants=None):
if variants is None:
# Default variants
variants = ["plain", "first", "last", "sort", "sort+first", "sort+last"]
fname = "track_" + "_".join(
"".join(
[c if c in string.digits + string.letters else " " for c in baseset]
).split()
)
def wrap(fname, baseset):
@perfbench(name=baseset, params=[("variant", variants)])
def f(perf, variant):
revset = baseset
if variant != "plain":
for var in variant.split("+"):
revset = "%s(%s)" % (var, revset)
return perf("perfrevset", revset)
f.__name__ = fname
return f
return wrap(fname, baseset)
def initializerevsetbenchmarks():
mod = sys.modules[__name__]
with open(os.path.join(basedir, 'contrib', 'base-revsets.txt'), 'rb') as fh:
for line in fh:
baseset = line.strip()
if baseset and not baseset.startswith('#'):
func = createrevsetbenchmark(baseset)
setattr(mod, func.__name__, func)
initializerevsetbenchmarks()