--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/JVM.java	Thu Dec 13 14:21:04 2018 +0100
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/JVM.java	Thu Dec 13 14:36:54 2018 +0100
@@ -516,4 +516,11 @@
      * @param emitAll emit all samples in old object queue
      */
     public native void emitOldObjectSamples(long cutoff, boolean emitAll);
+
+    /**
+     * Test if a chunk rotation is warranted.
+     *
+     * @return if it is time to perform a chunk rotation
+     */
+    public native boolean shouldRotateDisk();
 }