cleanup of revlog.group when repository is local
revlog.group cached every chunk from the revlog, the behaviour was
needed to minimize the roundtrip with old-http.
We now cache the revlog data ~4MB at a time.
The memory used server side when pulling goes down to 35Mo maximum
whereas without the patch more than 160Mo was used when cloning the linux kernel
repository.
The time used by cloning is higher mainly because of the check in revlog.revision.
before
110.25user 20.90system 2:52.00elapsed 76%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+708707minor)pagefaults 0swaps
after
117.56user 18.86system 2:50.43elapsed 80%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+748366minor)pagefaults 0swaps
#!/bin/sh
#
# hgmerge - default merge helper for Mercurial
#
# This tries to find a way to do three-way merge on the current system.
# The result ought to end up in $1.
set -e # bail out quickly on failure
LOCAL="$1"
BASE="$2"
OTHER="$3"
if [ -z "$EDITOR" ]; then
EDITOR="vi"
fi
# find decent versions of our utilities, insisting on the GNU versions where we
# need to
DIFF3=gdiff3
DIFF=gdiff
PATCH=gpatch
type $DIFF3 >/dev/null 2>&1 || DIFF3=diff3
type $DIFF >/dev/null 2>&1 || DIFF=diff
type $PATCH >/dev/null 2>&1 || PATCH=patch
$DIFF3 --version >/dev/null 2>&1 || DIFF3=
# Back up our file
cp "$LOCAL" "$LOCAL.orig"
# Attempt to do a non-interactive merge
if type merge > /dev/null 2>&1; then
merge "$LOCAL" "$BASE" "$OTHER" 2> /dev/null && exit 0
cp "$LOCAL.orig" "$LOCAL"
elif [ -n "$DIFF3" ]; then
echo $DIFF3 -m "$LOCAL.orig" "$BASE" "$OTHER"
$DIFF3 -m "$LOCAL.orig" "$BASE" "$OTHER" > "$LOCAL" && exit 0
if [ $? -eq 2 ]; then
echo "$DIFF3 failed! Exiting." 1>&2
cp "$LOCAL.orig" "$LOCAL"
exit 1
fi
cp "$LOCAL.orig" "$LOCAL"
fi
if [ -n "$DISPLAY" ]; then
# try using kdiff3, which is fairly nice
if type kdiff3 > /dev/null 2>&1; then
kdiff3 --auto "$BASE" "$LOCAL" "$OTHER" -o "$LOCAL" || exit 1
exit 0
fi
# try using tkdiff, which is a bit less sophisticated
if type tkdiff > /dev/null 2>&1; then
tkdiff "$LOCAL" "$OTHER" -a "$BASE" -o "$LOCAL" || exit 1
exit 0
fi
fi
# Attempt to do a merge with $EDITOR
if type merge > /dev/null 2>&1; then
echo "conflicts detected in $LOCAL"
merge "$LOCAL" "$BASE" "$OTHER" 2>/dev/null || $EDITOR "$LOCAL"
exit 0
fi
if [ -n "$DIFF3" ]; then
echo "conflicts detected in $LOCAL"
$DIFF3 -m "$LOCAL.orig" "$BASE" "$OTHER" > "$LOCAL" || {
case $? in
1)
$EDITOR "$LOCAL" ;;
2) echo "$DIFF3 failed! Exiting." 1>&2
cp "$LOCAL.orig" "$LOCAL"
exit 1 ;;
esac
exit 0
}
fi
HGTMP=""
cleanup_exit() {
rm -rf "$HGTMP"
}
# attempt to manually merge with diff and patch
if [ -n "$DIFF" -a -n "$PATCH" ]; then
# Remove temporary files even if we get interrupted
trap "cleanup_exit" 0 # normal exit
trap "exit 1" 1 2 3 6 15 # HUP INT QUIT ABRT TERM
HGTMP="${TMPDIR-/tmp}/hgmerge.$RANDOM.$RANDOM.$RANDOM.$$"
(umask 077 && mkdir "$HGTMP") || {
echo "Could not create temporary directory! Exiting." 1>&2
exit 1
}
$DIFF -u "$BASE" "$OTHER" > "$HGTMP/diff" || :
if $PATCH "$LOCAL" < "$HGTMP/diff"; then
exit 0
else
# If rejects are empty after using the editor, merge was ok
$EDITOR "$LOCAL" "$LOCAL.rej" && test -s "$LOCAL.rej" || exit 0
fi
exit 1
fi
echo "hgmerge: unable to find merge, tkdiff, kdiff3, or diff+patch!"
exit 1