upstream/mercurial-mirror Files · contrib/tcsh_completion_build.sh

bundle2: implement consume() API on unbundlepart...

bundle2: implement consume() API on unbundlepart We want bundle parts to not be seekable by default. That means eliminating the generic seek() method. A common pattern in bundle2.py is to seek to the end of the part data. This is mainly used by the part iteration code to ensure the underlying stream is advanced to the next bundle part. In this commit, we establish a dedicated API for consuming a bundle2 part data. We switch users of seek() to it. The old implementation of seek(0, os.SEEK_END) would effectively call self.read(). The new implementation calls self.read(32768) in a loop. The old implementation would therefore assemble a buffer to hold all remaining data being seeked over. For seeking over large bundle parts, this would involve a large allocation and a lot of overhead to collect intermediate data! This overhead can be seen in the results for `hg perfbundleread`: ! bundle2 iterparts() ! wall 10.891305 comb 10.820000 user 7.990000 sys 2.830000 (best of 3) ! wall 8.070791 comb 8.060000 user 7.180000 sys 0.880000 (best of 3) ! bundle2 part seek() ! wall 12.991478 comb 10.390000 user 7.720000 sys 2.670000 (best of 3) ! wall 10.370142 comb 10.350000 user 7.430000 sys 2.920000 (best of 3) Of course, skipping over large payload data isn't likely very common. So I doubt the performance wins will be observed in the wild. Differential Revision: https://phab.mercurial-scm.org/D1388

Gilles Moris - - Load All Authors

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      #!/bin/sh

      #

      # tcsh_completion_build.sh - script to generate tcsh completion

      #

      #

      # Copyright (C) 2005 TK Soh.

      #

      # This is free software; you can redistribute it and/or modify it under

      # the terms of the GNU General Public License as published by the Free

      # Software Foundation; either version 2 of the License, or (at your

      # option) any later version.

      #

      #

      # Description

      # -----------

      # This script generates a tcsh source file to support completion

      # of Mercurial commands and options.

      #

      # Instruction:

      # -----------

      # Run this script to generate the tcsh source file, and source

      # the file to add command completion support for Mercurial.

      #

      #    tcsh% tcsh_completion.sh FILE

      #    tcsh% source FILE

      #

      # If FILE is not specified, tcsh_completion will be generated.

      #

      # Bugs:

      # ----

      # 1. command specific options are not supported

      # 2. hg commands must be specified immediately after 'hg'.

      #

      tcsh_file=${1-tcsh_completion}

      hg_commands=`hg --debug help | \

              sed -e '1,/^list of commands:/d' \

                  -e '/^enabled extensions:/,$d' \

                  -e '/^additional help topics:/,$d' \

                  -e '/^ [^ ]/!d; s/[,:]//g;' | \

              xargs -n5 | \

              sed -e '$!s/$/ \\\\/g; 2,$s/^ */    /g'`

      hg_global_options=`hg -v help | \

              sed -e '1,/global/d;/^ *-/!d; s/ [^- ].*//' | \

              sed -e 's/ *$//; $!s/$/ \\\\/g; 2,$s/^ */    /g'`

      hg_version=`hg version | sed -e '1q'`

      script_name=`basename $0`

      cat > $tcsh_file <<END

      #

      # tcsh completion for Mercurial

      #

      # This file has been auto-generated by $script_name for

      # $hg_version

      #

      # Copyright (C) 2005 TK Soh.

      #

      # This is free software; you can redistribute it and/or modify it under

      # the terms of the GNU General Public License as published by the Free

      # Software Foundation; either version 2 of the License, or (at your

      # option) any later version.

      #

      complete hg \\

        'n/--cwd/d/' 'n/-R/d/' 'n/--repository/d/' \\

        'C/-/($hg_global_options)/' \\

        'p/1/($hg_commands)/'

      END

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				#!/bin/sh

				#
				# tcsh_completion_build.sh - script to generate tcsh completion
				#
				#
				# Copyright (C) 2005 TK Soh.
				#
				# This is free software; you can redistribute it and/or modify it under
				# the terms of the GNU General Public License as published by the Free
				# Software Foundation; either version 2 of the License, or (at your
				# option) any later version.
				#
				#
				# Description
				# -----------
				# This script generates a tcsh source file to support completion
				# of Mercurial commands and options.
				#
				# Instruction:
				# -----------
				# Run this script to generate the tcsh source file, and source
				# the file to add command completion support for Mercurial.
				#
				# tcsh% tcsh_completion.sh FILE
				# tcsh% source FILE
				#
				# If FILE is not specified, tcsh_completion will be generated.
				#
				# Bugs:
				# ----
				# 1. command specific options are not supported
				# 2. hg commands must be specified immediately after 'hg'.
				#

				tcsh_file=${1-tcsh_completion}

				hg_commands=`hg --debug help \| \
				sed -e '1,/^list of commands:/d' \
				-e '/^enabled extensions:/,$d' \
				-e '/^additional help topics:/,$d' \
				-e '/^ [^ ]/!d; s/[,:]//g;' \| \
				xargs -n5 \| \
				sed -e '$!s/$/ \\\\/g; 2,$s/^ */ /g'`

				hg_global_options=`hg -v help \| \
				sed -e '1,/global/d;/^ -/!d; s/ [^- ].//' \| \
				sed -e 's/ $//; $!s/$/ \\\\/g; 2,$s/^ / /g'`

				hg_version=`hg version \| sed -e '1q'`

				script_name=`basename $0`

				cat > $tcsh_file <<END
				#
				# tcsh completion for Mercurial
				#
				# This file has been auto-generated by $script_name for
				# $hg_version
				#
				# Copyright (C) 2005 TK Soh.
				#
				# This is free software; you can redistribute it and/or modify it under
				# the terms of the GNU General Public License as published by the Free
				# Software Foundation; either version 2 of the License, or (at your
				# option) any later version.
				#

				complete hg \\
				'n/--cwd/d/' 'n/-R/d/' 'n/--repository/d/' \\
				'C/-/($hg_global_options)/' \\
				'p/1/($hg_commands)/'

				END