src/share/classes/java/util/concurrent/atomic/AtomicIntegerFieldUpdater.java

@@ -32,10 +32,12 @@
  * Expert Group and released to the public domain, as explained at
  * http://creativecommons.org/publicdomain/zero/1.0/
  */
 
 package java.util.concurrent.atomic;
+import java.util.function.IntUnaryOperator;
+import java.util.function.IntBinaryOperator;
 import sun.misc.Unsafe;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.security.AccessController;
 import java.security.PrivilegedExceptionAction;

@@ -260,10 +262,98 @@
         do {
             prev = get(obj);
             next = prev + delta;
         } while (!compareAndSet(obj, prev, next));
         return next;
+    }
+
+    /**
+     * Atomically updates the current value with the results of
+     * applying the given function. The function should be
+     * side-effect-free, since it may be re-applied when attempted
+     * updates fail due to contention among threads.
+     *
+     * @param obj An object whose field to get and set
+     * @param updateFunction a side-effect-free function
+     * @return the previous value
+     * @since 1.8
+     */
+    public final int getAndUpdate(T obj, IntUnaryOperator updateFunction) {
+        int prev, next;
+        do {
+            prev = get(obj);
+            next = updateFunction.operateAsInt(prev);
+        } while (!compareAndSet(obj, prev, next));
+        return prev;
+    }
+
+    /**
+     * Atomically updates the current value with the results of
+     * applying the given function. The function should be
+     * side-effect-free, since it may be re-applied when attempted
+     * updates fail due to contention among threads.
+     *
+     * @param obj An object whose field to get and set
+     * @param updateFunction a side-effect-free function
+     * @return the updated value
+     * @since 1.8
+     */
+    public final int updateAndGet(T obj, IntUnaryOperator updateFunction) {
+        int prev, next;
+        do {
+            prev = get(obj);
+            next = updateFunction.operateAsInt(prev);
+        } while (!compareAndSet(obj, prev, next));
+        return next;
+    }
+
+    /**
+     * Atomically updates the current value with the results of
+     * applying the given function to the current and given values.
+     * The function should be side-effect-free, since it may be
+     * re-applied when attempted updates fail due to contention among
+     * threads.  The function is applied with the current value as its
+     * first argument, and the given update as the second argument.
+     *
+     * @param obj An object whose field to get and set
+     * @param x the update value
+     * @param accumulatorFunction a side-effect-free function of two arguments
+     * @return the previous value
+     * @since 1.8
+     */
+    public final int getAndAccumulate(T obj, int x,
+                                      IntBinaryOperator accumulatorFunction) {
+        int prev, next;
+        do {
+            prev = get(obj);
+            next = accumulatorFunction.operateAsInt(prev, x);
+        } while (!compareAndSet(obj, prev, next));
+        return prev;
+    }
+
+    /**
+     * Atomically updates the current value with the results of
+     * applying the given function to the current and given values.
+     * The function should be side-effect-free, since it may be
+     * re-applied when attempted updates fail due to contention among
+     * threads.  The function is applied with the current value as its
+     * first argument, and the given update as the second argument.
+     *
+     * @param obj An object whose field to get and set
+     * @param x the update value
+     * @param accumulatorFunction a side-effect-free function of two arguments
+     * @return the updated value
+     * @since 1.8
+     */
+    public final int accumulateAndGet(T obj, int x,
+                                      IntBinaryOperator accumulatorFunction) {
+        int prev, next;
+        do {
+            prev = get(obj);
+            next = accumulatorFunction.operateAsInt(prev, x);
+        } while (!compareAndSet(obj, prev, next));
+        return next;
     }
 
     /**
      * Standard hotspot implementation using intrinsics
      */