详细聊聊C#的并发机制优秀在哪

private void DeleteFileHandler(object sender, FileSystemEventArgs e)
        {
            if(files.Contains(e.FullPath))
            {
                files.Remove(e.FullPath);
               //一些其它操作
            }
        }

 private void UdiskWather_Deleted(object sender, FileSystemEventArgs e)
        {
            if(this.InvokeRequired)
            {
                this.Invoke(new DeleteDelegate(DeleteFileHandler), new object[] { sender,e });               }
            else
            {
                DeleteFileHandler(sender, e);
            }
        }

public IAsyncResult BeginInvoke(Delegate method, params Object[] args) {
            using (new MultithreadSafeCallScope()) {
                Control marshaler = FindMarshalingControl();
                return(IAsyncResult)marshaler.MarshaledInvoke(this, method, args, false);
            }
        }

​
private Object MarshaledInvoke(Control caller, Delegate method, Object[] args, bool synchronous) {
            if (!IsHandleCreated) {
                throw new InvalidOperationException(SR.GetString(SR.ErrorNoMarshalingThread));
            }
 
            ActiveXImpl activeXImpl = (ActiveXImpl)Properties.GetObject(PropActiveXImpl);
            if (activeXImpl != null) {
                IntSecurity.UnmanagedCode.Demand();
            }
 
            // We don't want to wait if we're on the same thread, or else we'll deadlock.
 
            // It is important that syncSameThread always be false for asynchronous calls.
 
            //
 
            bool syncSameThread = false;
            int pid; // ignored
            if (SafeNativeMethods.GetWindowThreadProcessId(new HandleRef(this, Handle), out pid) == SafeNativeMethods.GetCurrentThreadId()) {
                if (synchronous)
                    syncSameThread = true;
            }
 
            // Store the compressed stack information from the thread that is calling the Invoke()
            // so we can assign the same security context to the thread that will actually execute
            // the delegate being passed.
            //
 
            ExecutionContext executionContext = null;
            if (!syncSameThread) {
                executionContext = ExecutionContext.Capture();
            }
 
            ThreadMethodEntry tme = new ThreadMethodEntry(caller, this, method, args, synchronous, executionContext);
            lock (this) {
                if (threadCallbackList == null) {
                    threadCallbackList = new Queue();
                }
            }
 
            lock (threadCallbackList) {
                if (threadCallbackMessage == 0) {
                    threadCallbackMessage = SafeNativeMethods.RegisterWindowMessage(Application.WindowMessagesVersion + "_ThreadCallbackMessage");
                }
                threadCallbackList.Enqueue(tme);
            }
 
            if (syncSameThread) {
                InvokeMarshaledCallbacks();
            }  else {
                //
                UnsafeNativeMethods.PostMessage(new HandleRef(this, Handle), threadCallbackMessage, IntPtr.Zero, IntPtr.Zero);
            }
 
            if (synchronous) {
                if (!tme.IsCompleted) {
                    WaitForWaitHandle(tme.AsyncWaitHandle);
                }
 
                if (tme.exception != null) {
                    throw tme.exception;
                }
                return tme.retVal;
            }
            else {
                return(IAsyncResult)tme;
            }
        }

lock (this) {
                if (threadCallbackList == null) {
                    threadCallbackList = new Queue();
                }
            }
 
            lock (threadCallbackList) {
                if (threadCallbackMessage == 0) {
                    threadCallbackMessage = SafeNativeMethods.RegisterWindowMessage(Application.WindowMessagesVersion + "_ThreadCallbackMessage");
                }
                threadCallbackList.Enqueue(tme);
            }

void CAS(int p, int old,int new)
{
    if *p != old
        do nothing
    else 
     *p ← new
}

struct lockStruct{
    int32 head;
    int32 tail;
} ;

lock (threadCallbackList) {
                if (threadCallbackMessage == 0) {
                    threadCallbackMessage = SafeNativeMethods.RegisterWindowMessage(Application.WindowMessagesVersion + "_ThreadCallbackMessage");
                }
                threadCallbackList.Enqueue(tme);
            }