我收到的产品与信息的异常上Mutex.ReleaseMutex()在以下code的对象同步方法从code不同步的块被称为:
I receive an exception in production with message "Object synchronization method was called from an unsynchronized block of code" on Mutex.ReleaseMutex() in following code:
Mutex Mutex
{
get { return mutex ?? (mutex = new Mutex(false, mutexName)); }
}
[NonSerialized]
Mutex mutex;
public void Log(/*...*/)
{
Mutex.WaitOne();
try
{
/*...*/
}
finally
{
Mutex.ReleaseMutex();
}
}
有可能是saveral过程可以使用互斥不同和相同的mutextName。 而且还是我不知道该异常是如何发生的事。
There may be saveral processes which can use mutexes with different and same mutextName. And still I am not sure how that exception can happen there.
推荐答案
这code:
Mutex Mutex
{
get { return mutex ?? (mutex = new Mutex(false, mutexName)); }
}
这是不是线程安全的,超过一个互斥体可能会产生。使用pretend时间,让我们来看看下面这个例子:
That is not thread safe, more than one Mutex may get created. Using pretend time, let's look at this example:
Thread A | Thread B
-------------------------------------
Enters
Is Null? (yes) Enters
Create Mutex Is Null? (yes) <- Thread A hasn't assigned it yet.
Assign mutex Create Mutex
Use Mutex Assign mutex <- Oops! We just overwrote the mutex thread A created!
Release Mutex <- Oops! We are trying to release the mutex Thread B created without owning it!
希望这说明不是垃圾。
Hopefully that illustration isn't garbage.
使用 System.Lazy&LT; T&GT;
类是做延迟初始化的线程安全的方法,如果你真的想这样做,以你的互斥量
Using the System.Lazy<T>
class is a thread-safe way of doing lazy initialization, if you really want to do that with your mutex.
private Lazy<Mutex> _lazyMutex = new Lazy<Mutex>(() => new Mutex(false, "MyMutex"));
Mutex Mutex
{
get { return _lazyMutex.Value; }
}
鉴于这种情况,为什么你想偷懒的初始化互斥?你是如何处理的呢?
Given that, why are you trying to lazy initialize your Mutex? How are you disposing of it?
相关推荐
最新文章