public override void CopyTo(ReadOnlySpanAction <byte, object?> callback, object?state, int bufferSize)
{
// If we have been inherited into a subclass, the following implementation could be incorrect
// since it does not call through to Read() which a subclass might have overridden.
// To be safe we will only use this implementation in cases where we know it is safe to do so,
// and delegate to our base class (which will call into Read) when we are not sure.
if (GetType() != typeof(MemoryStream))
{
base.CopyTo(callback, state, bufferSize);
return;
}
StreamHelpers.ValidateCopyToArgs(this, callback, bufferSize);
// Retrieve a span until the end of the MemoryStream.
ReadOnlySpan <byte> span = new ReadOnlySpan <byte>(_buffer, _position, _length - _position);
_position = _length;
// Invoke the callback, using our internal span and avoiding any
// intermediary allocations.
callback(span, state);
}
public override void CopyTo(Stream destination, int bufferSize)
{
StreamHelpers.ValidateCopyToArgs(this, destination, bufferSize);
// After we validate arguments this is a nop.
}
/// <summary>
/// Asynchronously reads the bytes from the current stream and writes them to another
/// stream, using a specified buffer size and cancellation token.
/// </summary>
/// <param name="destination">The stream to which the contents of the current stream will be copied.</param>
/// <param name="bufferSize"> The size, in bytes, of the buffer.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns></returns>
public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
{
return(StreamHelpers.ArrayPoolCopyToAsync(this, destination, bufferSize, cancellationToken));
}
public virtual Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
{
StreamHelpers.ValidateCopyToArgs(this, destination, bufferSize);
return(CopyToAsyncInternal(destination, bufferSize, cancellationToken));
}
private void CopyTo(Stream destination, int bufferSize)
{
StreamHelpers.ValidateCopyToArgs(source, destination, bufferSize);
CopyToInternal(destination, bufferSize);
}
private Task CopyToAsync(Stream destination, Int32 bufferSize, CancellationToken cancellationToken)
{
StreamHelpers.ValidateCopyToArgs(source, destination, bufferSize);
return(CopyToAsyncInternal(destination, bufferSize, cancellationToken));
}