--- old/src/java.base/unix/classes/sun/nio/ch/PollSelectorImpl.java	2018-06-04 11:02:20.977275220 -0700
+++ new/src/java.base/unix/classes/sun/nio/ch/PollSelectorImpl.java	2018-06-04 11:02:20.713275215 -0700
@@ -40,7 +40,7 @@
  * Selector implementation based on poll
  */
 
-class PollSelectorImpl extends SelectorImpl {
+public class PollSelectorImpl extends SelectorImpl {
 
     // initial capacity of poll array
     private static final int INITIAL_CAPACITY = 16;
@@ -65,7 +65,7 @@
     private final Object interruptLock = new Object();
     private boolean interruptTriggered;
 
-    PollSelectorImpl(SelectorProvider sp) throws IOException {
+    protected PollSelectorImpl(SelectorProvider sp) throws IOException {
         super(sp);
 
         int size = pollArrayCapacity * SIZE_POLLFD;
@@ -128,6 +128,10 @@
         return updateSelectedKeys();
     }
 
+    protected int poll(long pollAddress, int numfds, int timeout) {
+        return poll0(pollAddress, numfds, timeout);
+    }
+
     /**
      * Process changes to the interest ops.
      */
@@ -383,7 +387,7 @@
         return pollArray.getShort(offset);
     }
 
-    private static native int poll(long pollAddress, int numfds, int timeout);
+    private static native int poll0(long pollAddress, int numfds, int timeout);
 
     static {
         IOUtil.load();