是否有与ReaderWriterLockSlim相同的lock {}语句？

Question

I like the shortcut in C# of lock(myLock){ /* do stuff */} . Is there an equivalent for read/write locks? (Specifically ReaderWriterLockSlim.) Right now, I use the following custom method, which I think works, but is kind of annoying because I have to pass in my action as an anonymous function, and I would prefer to use a standard locking mechanism if possible.

    void bool DoWithWriteLock(ReaderWriterLockSlim RWLock, int TimeOut, Action Fn)
    {
        bool holdingLock = false;
        try
        {
            if (RWLock.TryEnterWriteLock(TimeOut))
            {
                holdingLock = true;
                Fn();
            }
        }
        finally
        {
            if (holdingLock)
            {
                RWLock.ExitWriteLock();
            }
        }
        return holdingLock;
    }

Answer 1

You can't override the behaviour of the lock keyword. A common technique is to hijack the using keyword.

1. Make DoWithWriteLock return an IDisposable
2. Keep the TryEnterWriteLock call inside the DoWithWriteLock method
3. Return an object that implements IDisposable . In that object's Dispose method, put the call to ExitWriteLock .

The end result:

// Before
DoWithWriteLock(rwLock,
    delegate
    {
        Do1();
        Do2()
    } );

// After
using (DoWithWriteLock(rwLock))
{
    Do1();
    Do2();
}