Reworked ppss regarding process management..
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Louwrentius
parent
7d0815528e
commit
24b368e734
@ -1,7 +1,7 @@
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#!/bin/bash
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DEBUG="$1"
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VERSION=2.45
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VERSION=2.50
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TMP_DIR="ppss"
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cleanup () {
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87
ppss.sh
87
ppss.sh
@ -34,11 +34,11 @@
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#------------------------------------------------------------------------------
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# Handling control-c for a clean shutdown.
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trap 'kill_process; ' INT
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trap 'kill_process' SIGINT
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# Setting some vars.
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SCRIPT_NAME="Distributed Parallel Processing Shell Script"
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SCRIPT_VERSION="2.45"
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SCRIPT_VERSION="2.50"
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# The first argument to this script can be a mode.
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MODES="node start config stop pause continue deploy status erase kill"
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@ -78,7 +78,7 @@ JOB_LOG_DIR="$PPSS_DIR/job_log" # Directory containing l
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LOGFILE="$PPSS_DIR/ppss-log-$$.txt" # General PPSS log file. Contains lots of info.
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STOP=0 # STOP job.
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MAX_DELAY=0 # MAX DELAY between jobs.
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MAX_LOCK_DELAY=3 #
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MAX_LOCK_DELAY=9 #
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PERCENT="0"
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LISTENER_PID=""
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IFS_BACKUP="$IFS"
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@ -283,7 +283,7 @@ showusage_long () {
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kill_process () {
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echo "$KILL_KEY" >> "$FIFO"
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}
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}
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exec_cmd () {
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@ -329,7 +329,7 @@ check_for_interrupt () {
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then
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set_status "PAUZED"
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log INFO "PAUSE: sleeping for $PAUSE_DELAY SECONDS."
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sleep $PAUSE_DELAY
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sleep 0.$PAUSE_DELAY
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check_for_interrupt
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else
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set_status "RUNNING"
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@ -342,17 +342,17 @@ cleanup () {
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if [ -e "$FIFO" ]
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then
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rm $FIFO
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rm "$FIFO"
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fi
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if [ -e "$ARRAY_POINTER_FILE" ]
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then
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rm $ARRAY_POINTER_FILE
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rm "$ARRAY_POINTER_FILE"
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fi
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if [ -e "$GLOBAL_LOCK" ]
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then
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rm -rf $GLOBAL_LOCK
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rm -rf "$GLOBAL_LOCK"
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fi
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if [ -e "$SSH_SOCKET" ]
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@ -798,7 +798,7 @@ deploy () {
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KEY=`echo $SSH_KEY | cut -d " " -f 2`
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sleep 1.1
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sleep 1
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ssh -q $SSH_OPTS_NODE $SSH_KEY $USER@$NODE "cd ~ && mkdir $PPSS_HOME_DIR >> /dev/null 2>&1"
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scp -q $SSH_OPTS_NODE $SSH_KEY $0 $USER@$NODE:~/$PPSS_HOME_DIR
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@ -1038,7 +1038,7 @@ random_delay () {
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NUMBER=$RANDOM
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let "NUMBER %= $ARGS"
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sleep "$NUMBER"
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sleep "0.$NUMBER"
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}
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@ -1297,7 +1297,7 @@ get_item () {
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if [ "$ARRAY_POINTER" -ge "$SIZE_OF_ARRAY" ]
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then
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release_global_lock
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echo -en "\033[1A"
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#echo -en "\033[1A"
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return 1
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fi
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@ -1333,11 +1333,12 @@ start_single_worker () {
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ERROR=$?
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if [ ! "$ERROR" == "0" ]
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then
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#
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# If no more items are available, the listener should be
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# informed that a worker just finished / died.
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# Tis allows the listener to determine if all processes
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# This allows the listener to determine if all processes
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# are finished and it is time to stop.
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echo
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#
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echo "$STOP_KEY" > $FIFO
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return 1
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else
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@ -1436,9 +1437,11 @@ commando () {
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then
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eval "$COMMAND" >> "$ITEM_LOG_FILE" 2>&1
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ERROR="$?"
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MYPID="$!"
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else
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eval '$COMMAND"$ITEM" >> "$ITEM_LOG_FILE" 2>&1'
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ERROR="$?"
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MYPID="$!"
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fi
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AFTER="$(date +%s)"
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@ -1492,9 +1495,11 @@ commando () {
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return $?
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}
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#
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# This is the listener service. It listens on the pipe for events.
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# A job is executed for every event received.
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# This listener enables fully asynchronous processing.
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#
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listen_for_job () {
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FINISHED=0
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DIED=0
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@ -1502,19 +1507,19 @@ listen_for_job () {
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log DEBUG "Listener started."
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while read event <& 42
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do
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if [ "$event" == "$STOP_KEY" ]
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then
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#
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# The start_single_worker method sends a special signal to
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# inform the listener that a worker is finished.
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# If all workers are finished, it is time to stop.
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# This mechanism makes PPSS asynchronous.
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# Gives a status update on the current progress..
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if [ "$event" == "$STOP_KEY" ]
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then
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#
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((DIED++))
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if [ "$DIED" -ge "$MAX_NO_OF_RUNNING_JOBS" ]
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then
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kill_process
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#kill_process
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break
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else
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RES=$((MAX_NO_OF_RUNNING_JOBS-DIED))
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if [ "$RES" == "1" ]
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@ -1527,28 +1532,56 @@ listen_for_job () {
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fi
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elif [ "$event" == "$KILL_KEY" ]
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then
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for x in $PIDS
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#
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# If all workers are finished, it is time to kill all remaining
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# processes, terminate ssh processes and the listener itself.
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#
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# This command kills all processes that are related to the master
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# process as defined by $PID. All processes that have ever been
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# spawned, although disowned or backgrounded will be killed...
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#
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PROCLIST=`ps a -o pid,pgid,ppid,command | grep [0-9] | grep $PID | grep -v -i grep`
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#echo "$PROCLIST" > proclist.txt
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oldIFS=$IFS # save the field separator
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IFS=$'\n' # new field separator, the end of line
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for x in `echo "$PROCLIST"`
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do
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kill $x >> /dev/null 2>&1
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MYPPID=`echo $x | awk '{ print $3 }'`
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MYPID=`echo $x | awk '{ print $1 }'`
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if [ ! "$MYPPID" == "$PID" ] && [ ! "$MYPPID" == "1" ]
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then
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if [ ! "$MYPID" == "$PID" ]
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then
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log DEBUG "Killing process $MYPID"
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kill $MYPID >> /dev/null 2>&1
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else
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log DEBUG "Not killing master process..$MYPID.."
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fi
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else
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log DEBUG "Not killing listener process. $MYPID.."
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fi
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done
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IFS=$oldIFS
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if [ ! -z "$SSH_MASTER_PID" ]
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then
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kill "$SSH_MASTER_PID"
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fi
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echo
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log INFO "Finished. Consult ./$JOB_LOG_DIR for job output."
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log INFO "Press ENTER to continue."
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break
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else
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commando "$event" &
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PIDS="$PIDS $!"
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MYPID="$!"
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disown
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PIDS="$PIDS $MYPID"
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#log DEBUG "Event $event has pid $MYPID"
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fi
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get_global_lock
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SIZE_OF_ARRAY="${#ARRAY[@]}"
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ARRAY_POINTER=`cat $ARRAY_POINTER_FILE`
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PERCENT=$((100 * $ARRAY_POINTER / $SIZE_OF_ARRAY ))
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release_global_lock
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PERCENT=$((100 * $ARRAY_POINTER / $SIZE_OF_ARRAY ))
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if [ "$DIED" == "0" ] && [ "$FINISHED" == "0" ]
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then
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log INFO "Currently $PERCENT percent complete. Processed $ARRAY_POINTER of $SIZE_OF_ARRAY items."
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@ -1564,7 +1597,7 @@ listen_for_job () {
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set_status STOPPED
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log DEBUG "Listener stopped."
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cleanup
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exit
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log INFO "Finished. Consult $JOB_LOG_DIR for job output."
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}
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# This starts an number of parallel workers based on the # of parallel jobs allowed.
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@ -1764,6 +1797,8 @@ main () {
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get_all_items
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listen_for_job "$MAX_NO_OF_RUNNING_JOBS" & 2>&1 >> /dev/null
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LISTENER_PID=$!
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log DEBUG "Master PID is $PID."
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log DEBUG "Listener PID is $LISTENER_PID."
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start_all_workers
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;;
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