BitArray.IsSynchronized 属性

定义

获取一个值,该值指示是否同步对 BitArray 的访问(线程安全)。Gets a value indicating whether access to the BitArray is synchronized (thread safe).

public:
 property bool IsSynchronized { bool get(); };
public bool IsSynchronized { get; }
member this.IsSynchronized : bool
Public ReadOnly Property IsSynchronized As Boolean

属性值

Boolean

此属性始终为 falseThis property is always false.

实现

示例

下面的代码示例演示如何使用在 SyncRoot 整个枚举过程中锁定集合。The following code example shows how to lock the collection using the SyncRoot during the entire enumeration.

BitArray^ myCollection = gcnew BitArray(64, true);
bool lockTaken = false;
try
{
    Monitor::Enter(myCollection->SyncRoot, lockTaken);
    for each (Object^ item in myCollection)
    {
        // Insert your code here.
    }
}
finally
{
    if (lockTaken)
    {
        Monitor::Exit(myCollection->SyncRoot);
    }
}
BitArray myCollection = new BitArray(64, true);
lock(myCollection.SyncRoot)
{
    foreach (object item in myCollection)
    {
        // Insert your code here.
    }
}
Dim myCollection As New BitArray(64, true)
SyncLock myCollection.SyncRoot
    For Each item In myCollection
        ' Insert your code here.
    Next item
End SyncLock

此方法是一种 O(1) 操作。This method is an O(1) operation.

注解

BitArray 实现 IsSynchronized 属性,因为它是接口所必需的 System.Collections.ICollectionBitArray implements the IsSynchronized property because it is required by the System.Collections.ICollection interface.

枚举整个集合本质上不是一个线程安全的过程。Enumerating through a collection is intrinsically not a thread-safe procedure. 即使某个集合已同步,其他线程仍可以修改该集合,这会导致枚举数引发异常。Even when a collection is synchronized, other threads can still modify the collection, which causes the enumerator to throw an exception. 若要确保枚举过程中的线程安全性,可以在整个枚举期间锁定集合,或者捕获由其他线程进行的更改所导致的异常。To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.

适用于

另请参阅