C#

szolDat wrote:

I need to make the other threads recognize and not read the element that is being updated.

public class StreamLocker
{
    private MemoryStream _stream;
    private bool _isLocked;

    public StreamLocker(MemoryStream stream)
    {
        _stream = stream;
        _isLocked = false;
    }

    public MemoryStream LockStream()
    {
        lock (_stream)
        {
            if (_isLocked)
                return null; //if it is locked than just return null
                             //the caller can than continue with another instance
            return _stream; //if the caller gets a result than nobody else is working on it
        }
    }

    public void UnlockStream()
    {
        lock (_stream)
        {
            _isLocked = false;
        }
    }
}

szolDat wrote:

What happens if a thread checks if a MemoryStream is available, sees that it is, and starts reading it, then the control is passed to the main thread. The main thread starts writing it, and if it gets to the point where the other thread is reading it, then that thread will return false data.

szolDat wrote:

If I lock on a private object and not the MemoryStream itself, then how can I make sure that no one is reading that object?

szolDat wrote:

So the only way to restrict access is to force all threads to execute the same block of code for accessing the elements of the array, for example using the same accessor method or property?

szolDat wrote:

There isn't any way to lock objects in a memory, like you lock files with different reading / writing permissions?