upstream/mercurial-mirror Files · contrib/packaging/packagelib.sh

rust-matchers: fix quadratic complexity in `FileMatcher`...

rust-matchers: fix quadratic complexity in `FileMatcher` Concretely, this command: ``` $ echo hg up -r <nodeid>; time hg revert dir1 dir2 -r <othernode> --debug hg up -r <nodeid> real 0m14.690s user 0m14.766s sys 0m5.430s ``` was much slower despite using 16 cores before this change. The approach taken here is the same one used in match.py, in exactmatcher. This changeset was originally written by Valentin Gatien-Baron in a private repository. I have redacted the commit message and did a minor clean up of the code.

Mathias De Mare - - Load All Authors

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      # Extract version number into 4 parts, some of which may be empty:

      #

      # version: the numeric part of the most recent tag. Will always look like 1.3.

      #

      # type: if an rc build, "rc", otherwise empty

      #

      # distance: the distance from the nearest tag, or empty if built from a tag

      #

      # node: the node|short hg was built from, or empty if built from a tag

      gethgversion() {

          if [ -z "${1+x}" ]; then

              python="python3"

          else

              python="$1"

          fi

          export HGRCPATH=

          export HGPLAIN=

          make cleanbutpackages PYTHON=$python

          make local PURE=--pure PYTHON=$python

          HG="$PWD/hg"

          $python "$HG" version > /dev/null || { echo 'abort: hg version failed!'; exit 1 ; }

          hgversion=`LANGUAGE=C $python "$HG" version | sed -ne 's/.*(version \(.*\))$/\1/p'`

          if echo $hgversion | grep + > /dev/null 2>&1 ; then

              tmp=`echo $hgversion | cut -d+ -f 2`

              hgversion=`echo $hgversion | cut -d+ -f 1`

              distance=`echo $tmp | cut -d- -f 1`

              node=`echo $tmp | cut -d- -f 2`

          else

              distance=''

              node=''

          fi

          if echo $hgversion | grep -E -- '[0-9]\.[0-9](\.[0-9])?rc' > /dev/null 2>&1; then

              version=`echo $hgversion | cut -d'r' -f1`

              type="rc`echo $hgversion | cut -d'c' -f2-`"

          else

              version=$hgversion

              type=''

          fi

      }

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				# Extract version number into 4 parts, some of which may be empty:
				#
				# version: the numeric part of the most recent tag. Will always look like 1.3.
				#
				# type: if an rc build, "rc", otherwise empty
				#
				# distance: the distance from the nearest tag, or empty if built from a tag
				#
				# node: the node\|short hg was built from, or empty if built from a tag
				gethgversion() {
				if [ -z "${1+x}" ]; then
				python="python3"
				else
				python="$1"
				fi
				export HGRCPATH=
				export HGPLAIN=

				make cleanbutpackages PYTHON=$python
				make local PURE=--pure PYTHON=$python
				HG="$PWD/hg"

				$python "$HG" version > /dev/null \|\| { echo 'abort: hg version failed!'; exit 1 ; }

				hgversion=`LANGUAGE=C $python "$HG" version \| sed -ne 's/.(version \(.\))$/\1/p'`

				if echo $hgversion \| grep + > /dev/null 2>&1 ; then
				tmp=`echo $hgversion \| cut -d+ -f 2`
				hgversion=`echo $hgversion \| cut -d+ -f 1`
				distance=`echo $tmp \| cut -d- -f 1`
				node=`echo $tmp \| cut -d- -f 2`
				else
				distance=''
				node=''
				fi
				if echo $hgversion \| grep -E -- '[0-9]\.[0-9](\.[0-9])?rc' > /dev/null 2>&1; then
				version=`echo $hgversion \| cut -d'r' -f1`
				type="rc`echo $hgversion \| cut -d'c' -f2-`"
				else
				version=$hgversion
				type=''
				fi
				}