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

rev 51958 : 8211122: Reduce the number of internal classes made accessible to jdk.unsupported
Reviewed-by: alanb, dfuchs, kvn
rev 51959 : resolve JDK-8211122

*** 3724,3729 ****
--- 3724,3752 ----
      private native int addressSize0();
      private native Class<?> defineAnonymousClass0(Class<?> hostClass, byte[] data, Object[] cpPatches);
      private native int getLoadAverage0(double[] loadavg, int nelems);
      private native boolean unalignedAccess0();
      private native boolean isBigEndian0();
+ 
+     /**
+      * Invokes the given direct byte buffer's cleaner, if any.
+      *
+      * @param directBuffer a direct byte buffer
+      * @throws NullPointerException     if {@code directBuffer} is null
+      * @throws IllegalArgumentException if {@code directBuffer} is non-direct,
+      *                                  or is a {@link java.nio.Buffer#slice slice}, or is a
+      *                                  {@link java.nio.Buffer#duplicate duplicate}
+      */
+     public void invokeCleaner(java.nio.ByteBuffer directBuffer) {
+         if (!directBuffer.isDirect())
+             throw new IllegalArgumentException("buffer is non-direct");
+ 
+         DirectBuffer db = (DirectBuffer) directBuffer;
+         if (db.attachment() != null)
+             throw new IllegalArgumentException("duplicate or slice");
+ 
+         Cleaner cleaner = db.cleaner();
+         if (cleaner != null) {
+             cleaner.clean();
+         }
+     }
  }