work.txt

git show ce341a3
commit ce341a313838db73c6dbc535db08419358645d0a
Author: Charles Oliver Nutter <headius@headius.com>
Date:   Wed Dec 19 17:10:12 2018 -0600

    Ignore closed selectors when returning to pool.
    
    It's unclear why the selector is closing but if it's closed it's
    not usable anymore. We can ignore it and a new one will get
    created for future use.
    
    This relates to guard/rb-inotify#91.

diff --git a/core/src/main/java/org/jruby/util/io/SelectorPool.java b/core/src/main/java/org/jruby/util/io/SelectorPool.java
index 1ca0b811f9..090c91a4d7 100644
--- a/core/src/main/java/org/jruby/util/io/SelectorPool.java
+++ b/core/src/main/java/org/jruby/util/io/SelectorPool.java
@@ -30,6 +30,7 @@
 package org.jruby.util.io;
 
 import java.io.IOException;
+import java.nio.channels.ClosedSelectorException;
 import java.nio.channels.SelectionKey;
 import java.nio.channels.Selector;
 import java.util.ArrayList;
@@ -85,19 +86,23 @@ public class SelectorPool {
      * @param selector the selector to put back
      */
     public void put(Selector selector) {
-        for (SelectionKey key : selector.keys()) {
-            if (key != null) {
-                key.cancel();
+        try {
+            for (SelectionKey key : selector.keys()) {
+                if (key != null) {
+                    key.cancel();
+                }
             }
-        }
 
-        try {
-            selector.selectNow();
-        } catch (Exception e) {