[8u] RFR for JDK-8169961: Memory leak after debugging session

[Shafi Ahmad]

Hi,
 
Please review the backport of bug: "JDK-8169961: Memory leak after debugging session" to jdk8u-dev

Please note that this is not a clean backport due to small conflict - 
shshahma at slc12kkg:/scratch/shshahma/Java/jdk8u-dev-base/jdk$ cat src/share/classes/com/sun/tools/jdi/TargetVM.java.rej
--- TargetVM.java
+++ TargetVM.java
@@ -41,7 +41,7 @@
 
 public class TargetVM implements Runnable {
     private Map<String, Packet> waitingQueue = new HashMap<>(32,0.75f);
-    private boolean shouldListen = true;
+    private volatile boolean shouldListen = true;
     private List<EventQueue> eventQueues = Collections.synchronizedList(new ArrayList<>(2));
     private VirtualMachineImpl vm;
     private Connection connection;

	
Webrev: http://cr.openjdk.java.net/~shshahma/8169961/jdk8u-webrev.01/
Jdk10 bug: https://bugs.openjdk.java.net/browse/JDK-8169961
Original patch pushed to jdk10: http://hg.openjdk.java.net/jdk10/jdk10/jdk/rev/cbc248de6505

Test:  Run jprt -testset core, jtreg test jdk/test/com/sun/jdi.

Regards,
Shafi