/** * Atomically sets the value to the given updated value * if the current value {@code ==} the expected value. * * @param expect the expected value * @param update the new value * @return {@code true} if successful. False return indicates that * the actual value was not equal ...
If you also want to remove fromsaveListthe elements ofupdateList, you'll have to create a copy of one of the sets first : Set<AcceptorInventory> copyOfUpdateList =newHashSet<>(updateList); updateList.removeAll (saveList); saveList.removeAll (copyOfUpdateList); ...
例如,如果将两个键 a 和 b 添加到没有使用显式比较器的有序集合中,使 (!a.equals(b) && a.compareTo(b) == 0),那么第二个 add 操作将返回 false(有序集合的大小没有增加),因为从有序集合的角度来看,a 和 b 是相等的。 实际上,所有实现 Comparable 的 Java 核心类都具有与 equals 一致的自然排序。
AtomicBoolean在java.util.concurrent.atomic包下,源代码如下,同样用CAS方法。 AtomicBoolean 可用在应用程序中(如以原子方式更新的标志),但不能用于替换 Boolean。即能够保证在高并发的情况下只有一个线程能够访问这个属性值。 /** * Atomically sets the value to the given updated value * if the current value ...
* Atomically sets the value to the given updated value * if the current value {@code ==} the expected value. * * @param expect the expected value * @param update the new value * @return true if successful. False return indicates that ...
* Eventually sets to the given value. * * @param newValue the new value * @since 1.6 */ public final void lazySet(int newValue) { unsafe.putOrderedInt(this, valueOffset, newValue); } /** * Atomically sets to the given value and returns the old value. ...
* Atomically sets the field of the given object managed by this updater * to the given updated value if the current value {@code ==} the * expected value. This method is guaranteed to be atomic with respect to * other calls to {@code compareAndSet} and {@code set}, but not ...
* Atomically sets the value to the given updated value * if the current value {@code ==} the expected value. * @param expect the expected value * @param update the new value * @return true if successful. False return indicates that ...
Namespace: Java.Util.Concurrent Assembly: Mono.Android.dll Sets (atomically) the pending count to the given count only if it currently holds the given expected value. C# 复制 [Android.Runtime.Register("compareAndSetPendingCount", "(II)Z", "", ApiSince=24)] public bool CompareAndSetPe...
Atomically sets the value tonewValueif the current value== expectedValue, with memory effects as specified byVarHandle#compareAndSet. C# [Android.Runtime.Register("compareAndSet","(Ljava/lang/Object;Ljava/lang/Object;)Z","")]publicboolCompareAndSet(Java.Lang.Object? expectedValue, Java.Lang....