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rust: itering less on MissingAncestors.bases for max()
Instead of iterating on the whole `self.bases` each time to find
its max, we keep the latter in a separate member attribute and
keep it up to date in `add_bases()`
On a perfdiscovery done on PyPy, with repos prepared with
`contrib/discovery-helper.sh 50 100`, this gives a slight
improvement (around 0.5% on wall time, but 10% on CPU)
before:
! wall 0.172801 comb 0.180000 user 0.180000 sys 0.000000 (median of 541)
after:
! wall 0.171798 comb 0.160000 user 0.160000 sys 0.000000 (median of 551)
(perf command run time upped because of bigger variability during this test).
Differential Revision: https://phab.mercurial-scm.org/D5945
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Mon, 04 Feb 2019 19:46:57 +0100 |
parents | 1aee2ab0f902 |
children |
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#!/bin/sh # # This is an example of using HGEDITOR to create of diff to review the # changes while committing. # If you want to pass your favourite editor some other parameters # only for Mercurial, modify this: case "${EDITOR}" in "") EDITOR="vi" ;; emacs) EDITOR="$EDITOR -nw" ;; gvim|vim) EDITOR="$EDITOR -f -o" ;; esac HGTMP="" cleanup_exit() { rm -rf "$HGTMP" } # Remove temporary files even if we get interrupted trap "cleanup_exit" 0 # normal exit trap "exit 255" HUP INT QUIT ABRT TERM HGTMP=$(mktemp -d ${TMPDIR-/tmp}/hgeditor.XXXXXX) [ x$HGTMP != x -a -d $HGTMP ] || { echo "Could not create temporary directory! Exiting." 1>&2 exit 1 } ( grep '^HG: changed' "$1" | cut -b 13- | while read changed; do "$HG" diff "$changed" >> "$HGTMP/diff" done ) cat "$1" > "$HGTMP/msg" MD5=$(which md5sum 2>/dev/null) || \ MD5=$(which md5 2>/dev/null) [ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"` if [ -s "$HGTMP/diff" ]; then $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $? else $EDITOR "$HGTMP/msg" || exit $? fi [ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13) mv "$HGTMP/msg" "$1" exit $?