c# – 如何检测多线程使用?
发布时间:2020-12-15 06:46:09 所属栏目:百科 来源:网络整理
导读:在创建对象时和在调用方法以验证它不在多线程场景中使用时,是否足以比较ManagedThreadId? public class SingleThreadSafe{ private readonly int threadId; public SingleThreadSafe() { threadId = Thread.CurrentThread.ManagedThreadId; } public void D
在创建对象时和在调用方法以验证它不在多线程场景中使用时,是否足以比较ManagedThreadId?
public class SingleThreadSafe { private readonly int threadId; public SingleThreadSafe() { threadId = Thread.CurrentThread.ManagedThreadId; } public void DoSomethingUsefulButNotThreadSafe() { if(threadId!=Thread.CurrentThread.ManagedThreadId) { throw new InvalidOperationException( "This object is being accessed by a thread different than the one that created it. " + " But no effort has been made to make this object thread safe."); } //Do something useful,like use a previously established DbConnection } } 我的直觉往往是错误的线程,所以我想检查,看看是否有边缘案件我应该牢记. 解决方法
不,还不够!
托管线程ID可以由CLR重用,因此如果(threadId!= Thread.CurrentThread.ManagedThreadId)可以返回false,即使调用线程与构造对象的线程不同. 您通过参考比较可以实现您想要实现的目标: if (!object.ReferenceEquals(Thread.CurrentThread,ThreadThatCreatedThis)) // ... 编辑: MSDN然而说:
http://msdn.microsoft.com/en-us/library/system.threading.thread.managedthreadid%28v=vs.110%29.aspx (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |