public void OnNextRead(AsyncReadHandler handler)
{
var myAction = new MyAction(handler);
if (Interlocked.CompareExchange(ref readAction, myAction, null) != null)
{
throw new InvalidOperationException();
}
}
async Task <int> ReadAsync(byte[] buffer, int offset, int count, string message,
AsyncReadFunc func, AsyncReadHandler handler, CancellationToken cancellationToken)
{
Context.LogDebug(4, message);
try {
var ret = await handler(buffer, offset, count, func, cancellationToken).ConfigureAwait(false);
Context.LogDebug(4, "{0} done: {1}", message, ret);
return(ret);
} catch (Exception ex) {
Context.LogDebug(4, "{0} failed: {1}", message, ex);
throw;
}
}
public override Task <int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
{
var message = string.Format("{0}.ReadAsync({1},{2})", Name, offset, count);
AsyncReadFunc asyncBaseRead = base.ReadAsync;
AsyncReadHandler asyncReadHandler = (b, o, c, func, ct) => func(b, o, c, ct);
var action = Interlocked.Exchange(ref readAction, null);
if (action?.AsyncRead != null)
{
message += " - action";
return(ReadAsync(buffer, offset, count, message, asyncBaseRead, action.AsyncRead, cancellationToken));
}
return(ReadAsync(buffer, offset, count, message, asyncBaseRead, asyncReadHandler, cancellationToken));
}
async Task <int> ReadAsync(byte[] buffer, int offset, int count, string message,
AsyncReadFunc func, AsyncReadHandler handler, CancellationToken cancellationToken)
{
LogDebug(message);
try {
var ret = await handler(buffer, offset, count, func, cancellationToken).ConfigureAwait(false);
LogDebug($"{message} done: {ret}");
return(ret);
} catch (Exception ex) {
if (IgnoreErrors)
{
return(-1);
}
LogDebug($"{message} failed: {ex}");
throw;
}
}
public ProcessAsyncReader (Process process, IntPtr handle, bool err_out)
{
this.process = process;
this.handle = handle;
stream = new FileStream (handle, FileAccess.Read, false);
this.ReadHandler = new AsyncReadHandler (AddInput);
this.err_out = err_out;
}
public MyAction(AsyncReadHandler handler)
{
AsyncRead = handler;
}
