[JENKINS-47725] Make the access to WeakHashMap synchronized

jenkinsci · Oct 30, 2017 · 2f3eb3c · 2f3eb3c
1 parent 1d1c683
commit 2f3eb3c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/main/java/org/jenkinsci/plugins/workflow/FilePathUtils.java b/src/main/java/org/jenkinsci/plugins/workflow/FilePathUtils.java
@@ -35,6 +35,7 @@
 import hudson.slaves.ComputerListener;
 import java.io.IOException;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.Map;
 import java.util.WeakHashMap;
 import java.util.logging.Level;
@@ -112,7 +113,7 @@ private FilePathUtils() {}
     @Restricted(NoExternalUse.class)
     @Extension public static final class Listener extends ComputerListener {
 
-        private static final Map<VirtualChannel,String> channelNames = new WeakHashMap<>();
+        private static final Map<VirtualChannel,String> channelNames = Collections.synchronizedMap(new WeakHashMap<VirtualChannel,String>());
 
         // TODO: sync access?
         static String getChannelName(@Nonnull VirtualChannel channel) {