Is there a pipe-like .NET Stream class that doesn't use OS pipes?

问题

Using C#/.NET (Xamarin/Mono, really).

I have a class with a method (A) that accepts a stream that it writes to, and I have another class with a method (B) that accepts a stream to read from.

I want to have a stream that is passed to both (A) and (B), such that when (A) writes to the stream, that data can be read by (B).

Is there already such a beast that doesn't using OS pipes?

回答1:

i would use BlockingCollection. For example

BlockingCollection<int> bc = new BlockingCollection<int>();
Task.Run(() => new Reader(bc).DoWork());
Task.Run(() => new Writer(bc).DoWork());

public class Reader
{
    BlockingCollection<int> _Pipe = null;
    public Reader(BlockingCollection<int> pipe)
    {
        _Pipe = pipe;
    }

    public void DoWork()
    {
        foreach(var i in _Pipe.GetConsumingEnumerable())
        {
            Console.WriteLine(i);
        }
        Console.WriteLine("END");
    }
}

public class Writer
{
    BlockingCollection<int> _Pipe = null;
    public Writer(BlockingCollection<int> pipe)
    {
        _Pipe = pipe;
    }

    public void DoWork()
    {
        for (int i = 0; i < 50; i++)
        {
            _Pipe.Add(i);
            Thread.Sleep(100);
        }
        _Pipe.CompleteAdding();
    }
}

回答2:

You can create one around a MemoryStream, let's call it a ConcurrentMemoryStream.

You will need to make sure all the reads and writes are synchronized. You will also need to keep two pointers - one for reading and the other for writing, and seek to the proper place before a read or write operation.

Oh, and see this: https://stackoverflow.com/a/12328307/871910, as @mike z pointed out in a comment.

来源：https://stackoverflow.com/questions/21357933/is-there-a-pipe-like-net-stream-class-that-doesnt-use-os-pipes

标签

.net

mono