private void _VR33BTerminal_OnVR33BSampleStarted(object sender, VR33BSampleProcess e)
{
OxyPlotModel.Title = e.Name.ToString();
_LoadedSampleValues = new VR33BSampleValue[0];
TimeSpanPlotAxis.Pan((((_LatestPlotAxisActualMinMax.ActualMaximum - _LatestPlotAxisActualMinMax.ActualMinimum) * 0.5 + _LatestPlotAxisActualMinMax.ActualMinimum) - 0) * TimeSpanPlotAxis.Scale);
OxyPlotView.InvalidatePlot();
}
private void VR33BTerminal_OnVR33BSampleValueReceived(object sender, VR33BSampleValue e)
{
/*
* Dispatcher.Invoke(() =>
* {
* //TestTable.Insert(0, e);
* });
*/
}
public static VR33BSampleValueEntity FromStruct(VR33BSampleValue vr33bSampleValue)
{
return(new VR33BSampleValueEntity
{
SampleProcessGuid = vr33bSampleValue.SampleProcessGuid,
SampleIndex = vr33bSampleValue.SampleIndex,
SampleDateTime = vr33bSampleValue.SampleDateTime,
RawAccelerometerValueX = vr33bSampleValue.RawAccelerometerValue.X,
RawAccelerometerValueY = vr33bSampleValue.RawAccelerometerValue.Y,
RawAccelerometerValueZ = vr33bSampleValue.RawAccelerometerValue.Z,
RawTemperature = vr33bSampleValue.RawTemperature,
RawHumidity = vr33bSampleValue.RawHumidity,
SampleTimeSpanInMs = vr33bSampleValue.SampleTimeSpanInMs
});
}
private async void _VR33BTerminal_OnVR33BSampleValueReceived(object sender, VR33BSampleValue e)
{
lock (_BeforeStoreBufferLock)
{
_BeforeStoreBuffer.Add(VR33BSampleValueEntity.FromStruct(e));
}
if (_InMemoryBufferLock.WaitingWriteCount > 2)
{
return;
}
await Task.Run(() =>
{
int inMemorySize;
_InMemoryBufferLock.EnterWriteLock();
{
lock (_BeforeStoreBufferLock)
{
_InMemoryBuffer.AddRange(_BeforeStoreBuffer);
_BeforeStoreBuffer.Clear();
}
inMemorySize = _InMemoryBuffer.Count;
}
_InMemoryBufferLock.ExitWriteLock();
if (inMemorySize > Setting.InMemoryBufferSize && !_TransferingDataToDatabase) //添加!_DataContextLock.IsWriteLockHeld这个条件可能会使后面数据库增长到很大时，InMemory中的条目数越来越多
{
Task.Run(() =>
{
lock (_MemoryToDataBaseTransferLock)
{
_TransferingDataToDatabase = true;
List <VR33BSampleValueEntity> memToDBMiddleBuffer;
_InMemoryBufferLock.EnterReadLock();
inMemorySize = _InMemoryBuffer.Count;
if (inMemorySize <= Setting.InMemoryBufferSize)
{
_InMemoryBufferLock.ExitReadLock();
}
else
{
memToDBMiddleBuffer = _InMemoryBuffer.GetRange(0, Setting.MemoryToDBBatchSize);
_InMemoryBufferLock.ExitReadLock();
_DataContextLock.EnterWriteLock();
{
_TransferingDataToDatabase = true;
DateTime beginTimingDateTime = DateTime.Now;
System.Diagnostics.Debug.WriteLine("BEGIN MOVING MEMORY TO DB");
_DataContext.SampleValueEntities.AddRange(memToDBMiddleBuffer);
_DataContext.SaveChanges();
System.Diagnostics.Debug.WriteLine("MOVE MEMORY TO DB TAKES " + (DateTime.Now - beginTimingDateTime).TotalMilliseconds + "Ms");
_TransferingDataToDatabase = false;
}
_DataContextLock.ExitWriteLock();
_InMemoryBufferLock.EnterWriteLock();
{
_InMemoryBuffer.RemoveRange(0, Setting.MemoryToDBBatchSize);
}
_InMemoryBufferLock.ExitWriteLock();
}
_TransferingDataToDatabase = false;
}
});
}
Updated?.Invoke(this, e);
});
}
