private void CheckHandle()
{
if (_handle == null)
{
InternalResources.FileNotOpen();
}
}
// Flush dumps the contents of the serial driver's internal read and write buffers.
// We actually expose the functionality for each, but fulfilling Stream's contract
// requires a Flush() method. Fails if handle closed.
// Note: Serial driver's write buffer is *already* attempting to write it, so we can only wait until it finishes.
public override void Flush()
{
if (_handle == null)
{
InternalResources.FileNotOpen();
}
Interop.Termios.TermiosDiscard(_handle, Interop.Termios.Queue.AllQueues);
}
internal void SetBufferSizes(int readBufferSize, int writeBufferSize)
{
if (_handle == null)
{
InternalResources.FileNotOpen();
}
// Ignore for now.
}
internal void DiscardOutBuffer()
{
if (_handle == null)
{
InternalResources.FileNotOpen();
}
// This may or may not work depending on hardware.
Interop.Termios.TermiosDiscard(_handle, Interop.Termios.Queue.SendQueue);
}
// Flush dumps the contents of the serial driver's internal read and write buffers.
// We actually expose the functionality for each, but fulfilling Stream's contract
// requires a Flush() method. Fails if handle closed.
// Note: Serial driver's write buffer is *already* attempting to write it, so we can only wait until it finishes.
public override void Flush()
{
if (_handle == null)
{
InternalResources.FileNotOpen();
}
SpinWait sw = default;
while (!_writeQueue.IsEmpty)
{
sw.SpinOnce();
}
Interop.Termios.TermiosDrain(_handle);
}
private void CheckReadWriteArguments(byte[] array, int offset, int count)
{
if (array == null)
{
throw new ArgumentNullException(nameof(array));
}
if (offset < 0)
{
throw new ArgumentOutOfRangeException(nameof(offset), SR.ArgumentOutOfRange_NeedNonNegNumRequired);
}
if (count < 0)
{
throw new ArgumentOutOfRangeException(nameof(count), SR.ArgumentOutOfRange_NeedNonNegNumRequired);
}
if (array.Length - offset < count)
{
throw new ArgumentException(SR.Argument_InvalidOffLen);
}
if (_handle == null)
{
InternalResources.FileNotOpen();
}
}