1 #!/bin/sh
   2 
   3 #
   4 # Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
   5 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6 #
   7 # This code is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License version 2 only, as
   9 # published by the Free Software Foundation.
  10 #
  11 # This code is distributed in the hope that it will be useful, but WITHOUT
  12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 # version 2 for more details (a copy is included in the LICENSE file that
  15 # accompanied this code).
  16 #
  17 # You should have received a copy of the GNU General Public License version
  18 # 2 along with this work; if not, write to the Free Software Foundation,
  19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22 # or visit www.oracle.com if you need additional information or have any
  23 # questions.
  24 #
  25 
  26 # Shell script for a fast parallel forest command
  27 
  28 global_opts=""
  29 status_output="/dev/stdout"
  30 qflag="false"
  31 vflag="false"
  32 sflag="false"
  33 while [ $# -gt 0 ]
  34 do
  35   case $1 in
  36     -q | --quiet )
  37       qflag="true"
  38       global_opts="${global_opts} -q"
  39       status_output="/dev/null"
  40       ;;
  41 
  42     -v | --verbose )
  43       vflag="true"
  44       global_opts="${global_opts} -v"
  45       ;;
  46 
  47     -s | --sequential )
  48       sflag="true"
  49       ;;
  50 
  51     '--' ) # no more options
  52       shift; break
  53       ;;
  54 
  55     -*)  # bad option
  56       usage
  57       ;;
  58 
  59      * )  # non option
  60       break
  61       ;;
  62   esac
  63   shift
  64 done
  65 
  66 
  67 command="$1"; shift
  68 command_args="$@"
  69 
  70 usage() {
  71       echo "usage: $0 [-q|--quiet] [-v|--verbose] [-s|--sequential] [--] <command> [commands...]" > ${status_output}
  72       exit 1
  73 }
  74 
  75 if [ "x" = "x$command" ] ; then
  76   echo "ERROR: No command to hg supplied!"
  77   usage
  78 fi
  79 
  80 # Check if we can use fifos for monitoring sub-process completion.
  81 on_windows=`uname -s | egrep -ic -e 'cygwin|msys'`
  82 if [ on_windows = "1" ]; then
  83   # cygwin has (2014-04-18) broken (single writer only) FIFOs
  84   # msys has (2014-04-18) no FIFOs.
  85   have_fifos="false"
  86 else
  87   have_fifos="true"
  88 fi
  89 
  90 # Clean out the temporary directory that stores the pid files.
  91 tmp=/tmp/forest.$$
  92 rm -f -r ${tmp}
  93 mkdir -p ${tmp}
  94 
  95 safe_interrupt () {
  96   if [ -d ${tmp} ]; then
  97     if [ "`ls ${tmp}/*.pid`" != "" ]; then
  98       echo "Waiting for processes ( `cat ${tmp}/*.pid | tr '\n' ' '`) to terminate nicely!" > ${status_output}
  99       sleep 1
 100       # Pipe stderr to dev/null to silence kill, that complains when trying to kill
 101       # a subprocess that has already exited.
 102       kill -TERM `cat ${tmp}/*.pid | tr '\n' ' '` 2> /dev/null
 103       wait
 104       echo "Interrupt complete!" > ${status_output}
 105     fi
 106     rm -f -r ${tmp}
 107   fi
 108   exit 130
 109 }
 110 
 111 nice_exit () {
 112   if [ -d ${tmp} ]; then
 113     if [ "`ls ${tmp}`" != "" ]; then
 114       wait
 115     fi
 116     rm -f -r ${tmp}
 117   fi
 118 }
 119 
 120 trap 'safe_interrupt' INT QUIT
 121 trap 'nice_exit' EXIT
 122 
 123 subrepos="corba jaxp jaxws langtools jdk hotspot nashorn"
 124 subrepos_extra="closed jdk/src/closed jdk/make/closed jdk/test/closed hotspot/make/closed hotspot/src/closed hotspot/test/closed deploy install sponsors pubs"
 125 
 126 # Only look in specific locations for possible forests (avoids long searches)
 127 pull_default=""
 128 repos=""
 129 repos_extra=""
 130 if [ "${command}" = "clone" -o "${command}" = "fclone" -o "${command}" = "tclone" ] ; then
 131   if [ ! -f .hg/hgrc ] ; then
 132     echo "ERROR: Need initial repository to use this script" > ${status_output}
 133     exit 1
 134   fi
 135 
 136   pull_default=`hg paths default`
 137   if [ "${pull_default}" = "" ] ; then
 138     echo "ERROR: Need initial clone with 'hg paths default' defined" > ${status_output}
 139     exit 1
 140   fi
 141 
 142   for i in ${subrepos} ; do
 143     if [ ! -f ${i}/.hg/hgrc ] ; then
 144       repos="${repos} ${i}"
 145     fi
 146   done
 147   if [ "${command_args}" != "" ] ; then
 148     pull_default_tail=`echo ${pull_default} | sed -e 's@^.*://[^/]*/\(.*\)@\1@'`
 149     if [ "x${pull_default}" = "x${pull_default_tail}" ] ; then
 150       echo "ERROR: Need initial clone from non-local source" > ${status_output}
 151       exit 1
 152     fi
 153     pull_extra="${command_args}/${pull_default_tail}"
 154     for i in ${subrepos_extra} ; do
 155       if [ ! -f ${i}/.hg/hgrc ] ; then
 156         repos_extra="${repos_extra} ${i}"
 157       fi
 158     done
 159   fi
 160   at_a_time=2
 161   # Any repos to deal with?
 162   if [ "${repos}" = "" -a "${repos_extra}" = "" ] ; then
 163     echo "No repositories to process." > ${status_output}
 164     exit
 165   fi
 166 else
 167   for i in . ${subrepos} ${subrepos_extra} ; do
 168     if [ -d ${i}/.hg ] ; then
 169       repos="${repos} ${i}"
 170     fi
 171   done
 172 
 173   # Any repos to deal with?
 174   if [ "${repos}" = "" ] ; then
 175     echo "No repositories to process." > ${status_output}
 176     exit
 177   fi
 178 
 179   # any of the repos locked?
 180   for i in ${repos} ; do
 181     if [ -h ${i}/.hg/store/lock -o -f ${i}/.hg/store/lock ] ; then
 182       locked="${i} ${locked}"
 183     fi
 184   done
 185   if [ "${locked}" != "" ] ; then
 186     echo "ERROR: These repositories are locked: ${locked}" > ${status_output}
 187     exit 1
 188   fi
 189   at_a_time=8
 190 fi
 191 
 192 # Echo out what repositories we do a command on.
 193 echo "# Repositories: ${repos} ${repos_extra}" > ${status_output}
 194 
 195 if [ "${command}" = "serve" ] ; then
 196   # "serve" is run for all the repos.
 197   (
 198     (
 199       (
 200         echo "[web]"
 201         echo "description = $(basename $(pwd))"
 202         echo "allow_push = *"
 203         echo "push_ssl = False"
 204 
 205         echo "[paths]"
 206         for i in ${repos} ${repos_extra} ; do
 207           if [ "${i}" != "." ] ; then
 208             echo "/$(basename $(pwd))/${i} = ${i}"
 209           else
 210             echo "/$(basename $(pwd)) = $(pwd)"
 211           fi
 212         done
 213       ) > ${tmp}/serve.web-conf
 214 
 215       echo "serving root repo $(basename $(pwd))"
 216 
 217       (PYTHONUNBUFFERED=true hg${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 &
 218     ) 2>&1 | sed -e "s@^@serve:   @" > ${status_output}
 219   ) &
 220 else
 221   # Run the supplied command on all repos in parallel.
 222 
 223   # n is the number of subprocess started or which might still be running.
 224   n=0
 225   if [ $have_fifos = "true" ]; then
 226     # if we have fifos use them to detect command completion.
 227     mkfifo ${tmp}/fifo
 228     exec 3<>${tmp}/fifo
 229     if [ "${sflag}" = "true" ] ; then
 230       # force sequential
 231       at_a_time=1
 232     fi
 233   fi
 234 
 235   for i in ${repos} ${repos_extra} ; do
 236     n=`expr ${n} '+' 1`
 237     repopidfile=`echo ${i} | sed -e 's@./@@' -e 's@/@_@g'`
 238     reponame=`echo ${i} | sed -e :a -e 's/^.\{1,20\}$/ &/;ta'`
 239     pull_base="${pull_default}"
 240     for j in $repos_extra ; do
 241       if [ "$i" = "$j" ] ; then
 242           pull_base="${pull_extra}"
 243       fi
 244     done
 245     pull_base="`echo ${pull_base} | sed -e 's@[/]*$@@'`"
 246     (
 247       (
 248         if [ "${command}" = "clone" -o "${command}" = "fclone" -o "${command}" = "tclone" ] ; then
 249           pull_newrepo="${pull_base}/${i}"
 250           path="`dirname ${i}`"
 251           if [ "${path}" != "." ] ; then
 252             times=0
 253             while [ ! -d "${path}" ]   ## nested repo, ensure containing dir exists
 254             do
 255               times=`expr ${times} '+' 1`
 256               if [ `expr ${times} '%' 10` -eq 0 ] ; then
 257                 echo "${path} still not created, waiting..." > ${status_output}
 258               fi
 259               sleep 5
 260             done
 261           fi
 262           echo "hg${global_opts} clone ${pull_newrepo} ${i}" > ${status_output}
 263           (PYTHONUNBUFFERED=true hg${global_opts} clone ${pull_newrepo} ${i}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 &
 264         else
 265           echo "cd ${i} && hg${global_opts} ${command} ${command_args}" > ${status_output}
 266           cd ${i} && (PYTHONUNBUFFERED=true hg${global_opts} ${command} ${command_args}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 &
 267         fi
 268 
 269         echo $! > ${tmp}/${repopidfile}.pid
 270       ) 2>&1 | sed -e "s@^@${reponame}:   @" > ${status_output}
 271       if [ $have_fifos = "true" ]; then
 272         echo "${reponame}" >&3
 273       fi
 274     ) &
 275 
 276     if [ $have_fifos = "true" ]; then
 277       # check on count of running subprocesses and possibly wait for completion
 278       if [ ${at_a_time} -lt ${n} ] ; then
 279         # read will block until there are completed subprocesses
 280         while read repo_done; do
 281           n=`expr ${n} '-' 1`
 282           if [ ${n} -lt ${at_a_time} ] ; then
 283             # we should start more subprocesses
 284             break;
 285           fi
 286         done <&3
 287       fi
 288     else
 289       if [ "${sflag}" = "false" ] ; then
 290         # Compare completions to starts
 291         completed="`(ls -1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`"
 292         while [ ${at_a_time} -lt `expr ${n} '-' ${completed}` ] ; do
 293           # sleep a short time to give time for something to complete
 294           sleep 1
 295           completed="`(ls -1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`"
 296         done
 297       else
 298         # complete this task before starting another.
 299         wait
 300       fi
 301     fi
 302   done
 303 fi
 304 
 305 # Wait for all subprocesses to complete
 306 wait
 307 
 308 # Terminate with exit 0 only if all subprocesses were successful
 309 ec=0
 310 if [ -d ${tmp} ]; then
 311   for rc in ${tmp}/*.pid.rc ; do
 312     exit_code=`cat ${rc} | tr -d ' \n\r'`
 313     if [ "${exit_code}" != "0" ] ; then
 314       repo="`echo ${rc} | sed -e s@^${tmp}@@ -e 's@/*\([^/]*\)\.pid\.rc$@\1@' -e 's@_@/@g'`"
 315       echo "WARNING: ${repo} exited abnormally ($exit_code)" > ${status_output}
 316       ec=1
 317     fi
 318   done
 319 fi
 320 exit ${ec}