jdk8-mips64-public: comparison common/bin/hgforest.sh

-:ec58dd8b23b6
+:aa7e34e738cf
 #!/bin/sh
 #
 # Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 # or visit www.oracle.com if you need additional information or have any
 # questions.
 #
-# Shell script for a fast parallel forest command
+# Shell script for a fast parallel forest/trees command
-global_opts=""
+usage() {
-status_output="/dev/stdout"
+echo "usage: $0 [-h|--help] [-q|--quiet] [-v|--verbose] [-s|--sequential] [--] <command> [commands...]" > ${status_output}
-qflag="false"
+echo "Environment variables which modify behaviour:"
-vflag="false"
+echo "   HGFOREST_QUIET      : (boolean) If 'true' then standard output is redirected to /dev/null"
-sflag="false"
+echo "   HGFOREST_VERBOSE    : (boolean) If 'true' then Mercurial asked to produce verbose output"
+echo "   HGFOREST_SEQUENTIAL : (boolean) If 'true' then repos are processed sequentially. Disables concurrency"
+echo "   HGFOREST_GLOBALOPTS : (string, must begin with space) Additional Mercurial global options"
+echo "   HGFOREST_REDIRECT   : (file path) Redirect standard output to specified file"
+echo "   HGFOREST_FIFOS      : (boolean) Default behaviour for FIFO detection. Does not override FIFOs disabled"
+echo "   HGFOREST_CONCURRENCY: (positive integer) Number of repos to process concurrently"
+echo "   HGFOREST_DEBUG      : (boolean) If 'true' then temp files are retained"
+exit 1
+}
+global_opts="${HGFOREST_GLOBALOPTS:-}"
+status_output="${HGFOREST_REDIRECT:-/dev/stdout}"
+qflag="${HGFOREST_QUIET:-false}"
+vflag="${HGFOREST_VERBOSE:-false}"
+sflag="${HGFOREST_SEQUENTIAL:-false}"
 while [ $# -gt 0 ]
 do
 case $1 in
+-h | --help )
+usage
+;;
 -q | --quiet )
 qflag="true"
-global_opts="${global_opts} -q"
-status_output="/dev/null"
 ;;
 -v | --verbose )
 vflag="true"
-global_opts="${global_opts} -v"
 ;;
 -s | --sequential )
 sflag="true"
 ;;
 ;;
 esac
 shift
 done
+# silence standard output?
-command="$1"; shift
+if [ ${qflag} = "true" ] ; then
-command_args="$@"
+global_opts="${global_opts} -q"
+status_output="/dev/null"
-usage() {
+fi
-echo "usage: $0 [-q|--quiet] [-v|--verbose] [-s|--sequential] [--] <command> [commands...]" > ${status_output}
-exit 1
+# verbose output?
-}
+if [ ${vflag} = "true" ] ; then
+global_opts="${global_opts} -v"
-if [ "x" = "x$command" ] ; then
+fi
+# Make sure we have a command.
+if [ $# -lt 1 -o -z "${1:-}" ] ; then
 echo "ERROR: No command to hg supplied!"
 usage
 fi
-# Check if we can use fifos for monitoring sub-process completion.
+command="$1"; shift
-on_windows=`uname -s | egrep -ic -e 'cygwin|msys'`
+command_args="${@:-}"
-if [ ${on_windows} = "1" ]; then
-# cygwin has (2014-04-18) broken (single writer only) FIFOs
-# msys has (2014-04-18) no FIFOs.
-have_fifos="false"
-else
-have_fifos="true"
-fi
 # Clean out the temporary directory that stores the pid files.
 tmp=/tmp/forest.$$
 rm -f -r ${tmp}
 mkdir -p ${tmp}
+if [ "${HGFOREST_DEBUG:-false}" = "true" ] ; then
+echo "DEBUG: temp files are in: ${tmp}"
+fi
+# Check if we can use fifos for monitoring sub-process completion.
+echo "1" > ${tmp}/read
+while_subshell=1
+while read line; do
+while_subshell=0
+break;
+done < ${tmp}/read
+rm ${tmp}/read
+on_windows=`uname -s | egrep -ic -e 'cygwin|msys'`
+if [ ${while_subshell} = "1" -o ${on_windows} = "1" ]; then
+# cygwin has (2014-04-18) broken (single writer only) FIFOs
+# msys has (2014-04-18) no FIFOs.
+# older shells create a sub-shell for redirect to while
+have_fifos="false"
+else
+have_fifos="${HGFOREST_FIFOS:-true}"
+fi
 safe_interrupt () {
 if [ -d ${tmp} ]; then
 if [ "`ls ${tmp}/*.pid`" != "" ]; then
-echo "Waiting for processes ( `cat ${tmp}/*.pid | tr '\n' ' '`) to terminate nicely!" > ${status_output}
+echo "Waiting for processes ( `cat ${tmp}/.*.pid ${tmp}/*.pid 2> /dev/null | tr '\n' ' '`) to terminate nicely!" > ${status_output}
 sleep 1
 # Pipe stderr to dev/null to silence kill, that complains when trying to kill
 # a subprocess that has already exited.
 kill -TERM `cat ${tmp}/*.pid | tr '\n' ' '` 2> /dev/null
 wait
 exit 130
 }
 nice_exit () {
 if [ -d ${tmp} ]; then
-if [ "`ls ${tmp}`" != "" ]; then
+if [ "`ls -A ${tmp} 2> /dev/null`" != "" ]; then
 wait
 fi
-rm -f -r ${tmp}
+if [ "${HGFOREST_DEBUG:-false}" != "true" ] ; then
+rm -f -r ${tmp}
+fi
 fi
 }
 trap 'safe_interrupt' INT QUIT
 trap 'nice_exit' EXIT
 # Only look in specific locations for possible forests (avoids long searches)
 pull_default=""
 repos=""
 repos_extra=""
 if [ "${command}" = "clone" -o "${command}" = "fclone" -o "${command}" = "tclone" ] ; then
+# we must be a clone
 if [ ! -f .hg/hgrc ] ; then
 echo "ERROR: Need initial repository to use this script" > ${status_output}
 exit 1
 fi
+# the clone must know where it came from (have a default pull path).
 pull_default=`hg paths default`
 if [ "${pull_default}" = "" ] ; then
 echo "ERROR: Need initial clone with 'hg paths default' defined" > ${status_output}
 exit 1
 fi
+# determine which sub repos need to be cloned.
 for i in ${subrepos} ; do
 if [ ! -f ${i}/.hg/hgrc ] ; then
 repos="${repos} ${i}"
 fi
 done
 pull_default_tail=`echo ${pull_default} | sed -e 's@^.*://[^/]*/\(.*\)@\1@'`
-if [ "${command_args}" != "" ] ; then
+if [ -n "${command_args}" ] ; then
+# if there is an "extra sources" path then reparent "extra" repos to that path
 if [ "x${pull_default}" = "x${pull_default_tail}" ] ; then
 echo "ERROR: Need initial clone from non-local source" > ${status_output}
 exit 1
 fi
 pull_extra="${command_args}/${pull_default_tail}"
+# determine which extra subrepos need to be cloned.
 for i in ${subrepos_extra} ; do
 if [ ! -f ${i}/.hg/hgrc ] ; then
 repos_extra="${repos_extra} ${i}"
 fi
 done
 else
 if [ "x${pull_default}" = "x${pull_default_tail}" ] ; then
-# local source repo. Copy the extras ones that exist there.
+# local source repo. Clone the "extra" subrepos that exist there.
 for i in ${subrepos_extra} ; do
 if [ -f ${pull_default}/${i}/.hg/hgrc -a ! -f ${i}/.hg/hgrc ] ; then
 # sub-repo there in source but not here
 repos_extra="${repos_extra} ${i}"
 fi
 done
 fi
 fi
-at_a_time=2
 # Any repos to deal with?
 if [ "${repos}" = "" -a "${repos_extra}" = "" ] ; then
 echo "No repositories to process." > ${status_output}
 exit
 fi
+# Repos to process concurrently. Clone does better with low concurrency.
+at_a_time="${HGFOREST_CONCURRENCY:-2}"
 else
+# Process command for all of the present repos
 for i in . ${subrepos} ${subrepos_extra} ; do
 if [ -d ${i}/.hg ] ; then
 repos="${repos} ${i}"
 fi
 done
 echo "No repositories to process." > ${status_output}
 exit
 fi
 # any of the repos locked?
+locked=""
 for i in ${repos} ; do
 if [ -h ${i}/.hg/store/lock -o -f ${i}/.hg/store/lock ] ; then
 locked="${i} ${locked}"
 fi
 done
 if [ "${locked}" != "" ] ; then
 echo "ERROR: These repositories are locked: ${locked}" > ${status_output}
 exit 1
 fi
-at_a_time=8
+# Repos to process concurrently.
+at_a_time="${HGFOREST_CONCURRENCY:-8}"
 fi
 # Echo out what repositories we do a command on.
 echo "# Repositories: ${repos} ${repos_extra}" > ${status_output}
 if [ "${command}" = "serve" ] ; then
-# "serve" is run for all the repos.
+# "serve" is run for all the repos as one command.
 (
 (
+cwd=`pwd`
+serving=`basename ${cwd}`
 (
 echo "[web]"
-echo "description = $(basename $(pwd))"
+echo "description = ${serving}"
 echo "allow_push = *"
 echo "push_ssl = False"
 echo "[paths]"
-for i in ${repos} ${repos_extra} ; do
+for i in ${repos} ; do
 if [ "${i}" != "." ] ; then
-echo "/$(basename $(pwd))/${i} = ${i}"
+echo "/${serving}/${i} = ${i}"
 else
-echo "/$(basename $(pwd)) = $(pwd)"
+echo "/${serving} = ${cwd}"
 fi
 done
 ) > ${tmp}/serve.web-conf
-echo "serving root repo $(basename $(pwd))"
+echo "serving root repo ${serving}" > ${status_output}
+echo "hg${global_opts} serve" > ${status_output}
 (PYTHONUNBUFFERED=true hg${global_opts} serve -A ${status_output} -E ${status_output} --pid-file ${tmp}/serve.pid --web-conf ${tmp}/serve.web-conf; echo "$?" > ${tmp}/serve.pid.rc ) 2>&1 &
 ) 2>&1 | sed -e "s@^@serve:   @" > ${status_output}
 ) &
 else
 # Run the supplied command on all repos in parallel.
 # n is the number of subprocess started or which might still be running.
 n=0
-if [ $have_fifos = "true" ]; then
+if [ ${have_fifos} = "true" ]; then
 # if we have fifos use them to detect command completion.
 mkfifo ${tmp}/fifo
 exec 3<>${tmp}/fifo
-if [ "${sflag}" = "true" ] ; then
+fi
-# force sequential
-at_a_time=1
+# iterate over all of the subrepos.
-fi
-fi
 for i in ${repos} ${repos_extra} ; do
 n=`expr ${n} '+' 1`
 repopidfile=`echo ${i} | sed -e 's@./@@' -e 's@/@_@g'`
 reponame=`echo ${i} | sed -e :a -e 's/^.\{1,20\}$/ &/;ta'`
 pull_base="${pull_default}"
-for j in $repos_extra ; do
-if [ "$i" = "$j" ] ; then
+# regular repo or "extra" repo?
-pull_base="${pull_extra}"
+for j in ${repos_extra} ; do
+if [ "${i}" = "${j}" ] ; then
+# it's an "extra"
+pull_base="${pull_extra}"
 fi
 done
+# remove trailing slash
 pull_base="`echo ${pull_base} | sed -e 's@[/]*$@@'`"
+# execute the command on the subrepo
 (
 (
 if [ "${command}" = "clone" -o "${command}" = "fclone" -o "${command}" = "tclone" ] ; then
-pull_newrepo="${pull_base}/${i}"
+# some form of clone
-path="`dirname ${i}`"
+clone_newrepo="${pull_base}/${i}"
-if [ "${path}" != "." ] ; then
+parent_path="`dirname ${i}`"
+if [ "${parent_path}" != "." ] ; then
 times=0
-while [ ! -d "${path}" ]   ## nested repo, ensure containing dir exists
+while [ ! -d "${parent_path}" ] ; do  ## nested repo, ensure containing dir exists
-do
+if [ "${sflag}" = "true" ] ; then
-times=`expr ${times} '+' 1`
+# Missing parent is fatal during sequential operation.
+echo "ERROR: Missing parent path: ${parent_path}" > ${status_output}
+exit 1
+fi
+times=`expr ${times} '+' 1)`
 if [ `expr ${times} '%' 10` -eq 0 ] ; then
-echo "${path} still not created, waiting..." > ${status_output}
+echo "${parent_path} still not created, waiting..." > ${status_output}
 fi
 sleep 5
 done
 fi
-echo "hg${global_opts} clone ${pull_newrepo} ${i}" > ${status_output}
+# run the clone command.
-(PYTHONUNBUFFERED=true hg${global_opts} clone ${pull_newrepo} ${i}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 &
+echo "hg${global_opts} clone ${clone_newrepo} ${i}" > ${status_output}
+(PYTHONUNBUFFERED=true hg${global_opts} clone ${clone_newrepo} ${i}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 &
 else
+# run the command.
 echo "cd ${i} && hg${global_opts} ${command} ${command_args}" > ${status_output}
 cd ${i} && (PYTHONUNBUFFERED=true hg${global_opts} ${command} ${command_args}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 &
 fi
 echo $! > ${tmp}/${repopidfile}.pid
 ) 2>&1 | sed -e "s@^@${reponame}:   @" > ${status_output}
-if [ $have_fifos = "true" ]; then
+# tell the fifo waiter that this subprocess is done.
-echo "${reponame}" >&3
+if [ ${have_fifos} = "true" ]; then
+echo "${i}" >&3
 fi
 ) &
-if [ $have_fifos = "true" ]; then
+if [ "${sflag}" = "true" ] ; then
-# check on count of running subprocesses and possibly wait for completion
+# complete this task before starting another.
-if [ ${at_a_time} -lt ${n} ] ; then
+wait
-# read will block until there are completed subprocesses
-while read repo_done; do
-n=`expr ${n} '-' 1`
-if [ ${n} -lt ${at_a_time} ] ; then
-# we should start more subprocesses
-break;
-fi
-done <&3
-fi
 else
-if [ "${sflag}" = "false" ] ; then
+if [ "${have_fifos}" = "true" ]; then
+# check on count of running subprocesses and possibly wait for completion
+if [ ${n} -ge ${at_a_time} ] ; then
+# read will block until there are completed subprocesses
+while read repo_done; do
+n=`expr ${n} '-' 1`
+if [ ${n} -lt ${at_a_time} ] ; then
+# we should start more subprocesses
+break;
+fi
+done <&3
+fi
+else
 # Compare completions to starts
-completed="`(ls -1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`"
+completed="`(ls -a1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`"
-while [ ${at_a_time} -lt `expr ${n} '-' ${completed}` ] ; do
+while [ `expr ${n} '-' ${completed}` -ge ${at_a_time} ] ; do
 # sleep a short time to give time for something to complete
 sleep 1
-completed="`(ls -1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`"
+completed="`(ls -a1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`"
 done
-else
-# complete this task before starting another.
-wait
 fi
 fi
 done
 fi
 wait
 # Terminate with exit 0 only if all subprocesses were successful
 ec=0
 if [ -d ${tmp} ]; then
-for rc in ${tmp}/*.pid.rc ; do
+rcfiles="`(ls -a ${tmp}/*.pid.rc 2> /dev/null) || echo ''`"
+for rc in ${rcfiles} ; do
 exit_code=`cat ${rc} | tr -d ' \n\r'`
 if [ "${exit_code}" != "0" ] ; then
-repo="`echo ${rc} | sed -e s@^${tmp}@@ -e 's@/*\([^/]*\)\.pid\.rc$@\1@' -e 's@_@/@g'`"
+repo="`echo ${rc} | sed -e 's@^'${tmp}'@@' -e 's@/*\([^/]*\)\.pid\.rc$@\1@' -e 's@_@/@g'`"
-echo "WARNING: ${repo} exited abnormally ($exit_code)" > ${status_output}
+echo "WARNING: ${repo} exited abnormally (${exit_code})" > ${status_output}
 ec=1
 fi
 done
 fi
 exit ${ec}

Mercurial > jdk8-mips64-public / file comparison

comparison: common/bin/hgforest.sh

common/bin/hgforest.sh