public void OnNext(ISpiReportTxStatusFrom value)
{
int key = value.SpiNum;
ObserverTxStatusPoco newRemaining = UpdateTXBufferState(key, value.BytesRemaining, 0, 0);
LOG.Debug("Device:" + key + " BufferDepth:" + newRemaining);
}
/// <summary>
/// Sent by IOIO. Tells us how much buffer space is left.
/// </summary>
/// <param name="value"></param>
public void OnNext(II2cReportTxStatusFrom value)
{
int key = value.I2cNum;
ObserverTxStatusPoco newRemaining = UpdateTXBufferState(key, value.BytesRemaining, 0, 0);
LOG.Debug("Device:" + key + " remaining after II2cReportTxStatusFrom:" + newRemaining);
}
/// <summary>
/// received when we are about to send data
/// </summary>
/// <param name="value"></param>
public void OnNext(ITwiMasterSendDataCommand value)
{
int key = value.TwiDef.TwiNum;
// wait until we know there is room on the remote side
int bytesBeforeAction = GetTXBufferState(key);
while (bytesBeforeAction < value.PayloadSize())
{
LOG.Debug("waiting:" + bytesBeforeAction);
System.Threading.Thread.Sleep(5);
bytesBeforeAction = GetTXBufferState(key);
}
ObserverTxStatusPoco newRemaining = UpdateTXBufferState(
key, -value.PayloadSize(), value.Data.Length, 0);
LOG.Debug("Device:" + key + " remaining after ITwiMasterSendDataCommand:" + newRemaining);
}
/// <summary>
/// sets the passed in bytes to the current number of bytes
/// </summary>
/// <param name="key">bus unit identifier, uart num, Twi bus num...</param>
/// <param name="numBytesRemaining">current buffer size</param>
/// <returns>available buffer space. should be same as numBytesRemaining</returns>
internal ObserverTxStatusPoco SetTXBufferState(int key, int numBytesRemaining)
{
// make sure we always have a key with an initial value. Ignore success/fail code
// this used to be in a conditional block. TryAdd fails if key exists
BufferDepth_.TryAdd(key, new ObserverTxStatusPoco());
// update requires the old value
ObserverTxStatusPoco oldRemaining;
bool gotValue = BufferDepth_.TryGetValue(key, out oldRemaining);
ObserverTxStatusPoco newRemaining = new ObserverTxStatusPoco(
numBytesRemaining,
oldRemaining.NumSent,
oldRemaining.NumReceived);
// this could fail if we have multiple threads manipulating the map and oldRemaining has changed
// we should RETRY if we fail
bool success = BufferDepth_.TryUpdate(key, newRemaining, oldRemaining);
if (!success)
{
LOG.Info("Failed set: " + newRemaining + "->" + oldRemaining);
}
return(newRemaining);
}
