350      * @param x the update value
 351      * @param accumulatorFunction a side-effect-free function of two arguments
 352      * @return the updated value
 353      * @since 1.8
 354      */
 355     public final int accumulateAndGet(T obj, int x,
 356                                       IntBinaryOperator accumulatorFunction) {
 357         int prev, next;
 358         do {
 359             prev = get(obj);
 360             next = accumulatorFunction.applyAsInt(prev, x);
 361         } while (!compareAndSet(obj, prev, next));
 362         return next;
 363     }
 364 
 365     /**
 366      * Standard hotspot implementation using intrinsics.
 367      */
 368     private static class AtomicIntegerFieldUpdaterImpl<T>
 369             extends AtomicIntegerFieldUpdater<T> {
 370         private static final sun.misc.Unsafe U = sun.misc.Unsafe.getUnsafe();
 371         private final long offset;
 372         private final Class<T> tclass;
 373         private final Class<?> cclass;
 374 
 375         AtomicIntegerFieldUpdaterImpl(final Class<T> tclass,
 376                                       final String fieldName,
 377                                       final Class<?> caller) {
 378             final Field field;
 379             final int modifiers;
 380             try {
 381                 field = AccessController.doPrivileged(
 382                     new PrivilegedExceptionAction<Field>() {
 383                         public Field run() throws NoSuchFieldException {
 384                             return tclass.getDeclaredField(fieldName);
 385                         }
 386                     });
 387                 modifiers = field.getModifiers();
 388                 sun.reflect.misc.ReflectUtil.ensureMemberAccess(
 389                     caller, tclass, null, modifiers);
 390                 ClassLoader cl = tclass.getClassLoader();

 350      * @param x the update value
 351      * @param accumulatorFunction a side-effect-free function of two arguments
 352      * @return the updated value
 353      * @since 1.8
 354      */
 355     public final int accumulateAndGet(T obj, int x,
 356                                       IntBinaryOperator accumulatorFunction) {
 357         int prev, next;
 358         do {
 359             prev = get(obj);
 360             next = accumulatorFunction.applyAsInt(prev, x);
 361         } while (!compareAndSet(obj, prev, next));
 362         return next;
 363     }
 364 
 365     /**
 366      * Standard hotspot implementation using intrinsics.
 367      */
 368     private static class AtomicIntegerFieldUpdaterImpl<T>
 369             extends AtomicIntegerFieldUpdater<T> {
 370         private static final jdk.internal.misc.Unsafe U = jdk.internal.misc.Unsafe.getUnsafe();
 371         private final long offset;
 372         private final Class<T> tclass;
 373         private final Class<?> cclass;
 374 
 375         AtomicIntegerFieldUpdaterImpl(final Class<T> tclass,
 376                                       final String fieldName,
 377                                       final Class<?> caller) {
 378             final Field field;
 379             final int modifiers;
 380             try {
 381                 field = AccessController.doPrivileged(
 382                     new PrivilegedExceptionAction<Field>() {
 383                         public Field run() throws NoSuchFieldException {
 384                             return tclass.getDeclaredField(fieldName);
 385                         }
 386                     });
 387                 modifiers = field.getModifiers();
 388                 sun.reflect.misc.ReflectUtil.ensureMemberAccess(
 389                     caller, tclass, null, modifiers);
 390                 ClassLoader cl = tclass.getClassLoader();