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unsafe-migration/src/UnsafeAccess.java

@@ -0,0 +1,17 @@
+import java.lang.reflect.Field;
+import sun.misc.Unsafe;
+
+/** The classic way every library gets an Unsafe: read the private static field "theUnsafe". */
+final class UnsafeAccess {
+    private UnsafeAccess() {}
+
+    static Unsafe get() {
+        try {
+            Field f = Unsafe.class.getDeclaredField("theUnsafe");
+            f.setAccessible(true);
+            return (Unsafe) f.get(null);
+        } catch (ReflectiveOperationException e) {
+            throw new IllegalStateException(e);
+        }
+    }
+}