maketest.sh: Add process cleanup for Windows at the end of testing

Signed-off-by: Stewart X Addison <sxa@redhat.com>

maketest.sh

@@ -20,6 +20,12 @@ case `uname` in
     ;;
 esac
 
+if [ "$OSTYPE" = "cygwin" ]; then
+  export JOBSTARTTIME=$(date -R)
+  echo PROCESSCATCH: Java processes which are currently on the machine:
+  powershell -c "Get-Process java | select id,processname,starttime"
+fi
+
 if [ "$#" -eq 1 ];then
 	cd $1/TKG
 	$MAKE compile
@@ -29,3 +35,29 @@ else
 	$MAKE $@
 fi
 
+# For now (while this code is being prototyped) I only want this to be
+# done while running in jenkins, to avoid a potentially destabilising
+# change if people are running other java processes on their local system
+set -x
+if [ ! -z "$EXECUTOR_NUMBER" ]; then
+  if [ "$OSTYPE" = "cygwin" ]; then
+    # Windows code based on https://github.com/AdoptOpenJDK/openjdk-infrastructure/issues/1669#issuecomment-727863096
+    echo PROCESSCATCH: Showing java processes - one will be the jenkins agent - I will remove any of these created since $JOBSTARTTIME:
+    powershell -c "Get-Process java"
+    C=`powershell -c "(Get-Process java | select id,processname,starttime | where {\\$_.StartTime -gt (Get-Date -Date \"$JOBSTARTTIME\")} | measure).count" | tr -d \\\\r`
+    if [ $C -ne 0 ]; then
+      echo PROCESSCATCH: I am going to attempt to stop the following ones:
+      powershell -c "Get-Process java | select id,processname,starttime | where {\$_.StartTime -gt (Get-Date -Date \"$JOBSTARTTIME\")}"
+      powershell -c "Get-Process java | select id,processname,starttime | where {\$_.StartTime -gt (Get-Date -Date \"$JOBSTARTTIME\")} | stop-process"
+      echo PROCESSCATCH: Removed processes - here is what is remaining:
+      powershell -c "Get-Process java"
+    fi
+  else
+    # Non-Windows code from https://ci.adoptopenjdk.net/job/SXA-processCheck
+    echo PROCESSCATCH: Checking for any leftover java processes on the machine
+    if ps -fu $USER | grep java | egrep -v "remoting.jar|agent.jar|grep"; then
+      echo PROCESSCATCH: There are rogue procesess still on the machine
+      echo PROCESSCATCH: Not killing them for now as this script should be tested more thoroughly first
+    fi
+  fi
+fi