src/java.base/share/classes/jdk/internal/misc/JavaLangRefAccess.java

@@ -26,14 +26,21 @@
 package jdk.internal.misc;
 
 public interface JavaLangRefAccess {
 
     /**
-     * Help ReferenceHandler thread process next pending
-     * {@link java.lang.ref.Reference}
+     * Triggers discovery of new Reference(s) and returns the phase sequence number
+     * in which they were discovered or previous phase sequence number if no new
+     * Reference(s) were discovered.
+     */
+    int discoverReferences();
+
+    /**
+     * Blocks until all Reference(s) that were discovered in given
+     * {@code discoveryPhase} (as returned by {@link #discoverReferences()})
+     * have been enqueued.
      *
-     * @return {@code true} if there was a pending reference and it
-     *         was enqueue-ed or {@code false} if there was no
-     *         pending reference
+     * @param discoveryPhase the discovery phase sequence number.
+     * @throws InterruptedException if interrupted while waiting.
      */
-    boolean tryHandlePendingReference();
+    void awaitReferencesEnqueued(int discoveryPhase) throws InterruptedException;
 }