public unsafe void LockNLoad(byte[][] cBufs, byte[][] xBufs, byte[][] oLaps, ISO_PKT_INFO[][] pktsInfo)
{
int j = 0;
int nLocalCount = j;
GCHandle[] bufSingleTransfer = new GCHandle[QueueSz];
GCHandle[] bufDataAllocation = new GCHandle[QueueSz];
GCHandle[] bufPktsInfo = new GCHandle[QueueSz];
GCHandle[] handleOverlap = new GCHandle[QueueSz];
while (j < QueueSz)
{
// Allocate one set of buffers for the queue, Buffered IO method require user to allocate a buffer as a part of command buffer,
// the BeginDataXfer does not allocated it. BeginDataXfer will copy the data from the main buffer to the allocated while initializing the commands.
cBufs[j] = new byte[CyConst.SINGLE_XFER_LEN];
xBufs[j] = new byte[BufSz];
//initialize the buffer with initial value 0xA5
for (int iIndex = 0; iIndex < BufSz; iIndex++)
{
xBufs[j][iIndex] = 0;
}
int sz = Math.Max(CyConst.OverlapSignalAllocSize, sizeof(OVERLAPPED));
oLaps[j] = new byte[sz];
pktsInfo[j] = new ISO_PKT_INFO[PPX];
/*/////////////////////////////////////////////////////////////////////////////
*
* fixed keyword is getting thrown own by the compiler because the temporary variables
* tL0, tc0 and tb0 aren't used. And for jagged C# array there is no way, we can use this
* temporary variable.
*
* Solution for Variable Pinning:
* Its expected that application pin memory before passing the variable address to the
* library and subsequently to the windows driver.
*
* Cypress Windows Driver is using this very same memory location for data reception or
* data delivery to the device.
* And, hence .Net Garbage collector isn't expected to move the memory location. And,
* Pinning the memory location is essential. And, not through FIXED keyword, because of
* non-usability of temporary variable.
*
* /////////////////////////////////////////////////////////////////////////////*/
//fixed (byte* tL0 = oLaps[j], tc0 = cBufs[j], tb0 = xBufs[j]) // Pin the buffers in memory
//////////////////////////////////////////////////////////////////////////////////////////////
bufSingleTransfer[j] = GCHandle.Alloc(cBufs[j], GCHandleType.Pinned);
bufDataAllocation[j] = GCHandle.Alloc(xBufs[j], GCHandleType.Pinned);
bufPktsInfo[j] = GCHandle.Alloc(pktsInfo[j], GCHandleType.Pinned);
handleOverlap[j] = GCHandle.Alloc(oLaps[j], GCHandleType.Pinned);
// oLaps "fixed" keyword variable is in use. So, we are good.
/////////////////////////////////////////////////////////////////////////////////////////////
unsafe
{
//fixed (byte* tL0 = oLaps[j])
{
CyUSB.OVERLAPPED ovLapStatus = new CyUSB.OVERLAPPED();
ovLapStatus = (CyUSB.OVERLAPPED)Marshal.PtrToStructure(handleOverlap[j].AddrOfPinnedObject(), typeof(CyUSB.OVERLAPPED));
ovLapStatus.hEvent = (IntPtr)PInvoke.CreateEvent(0, 0, 0, 0);
Marshal.StructureToPtr(ovLapStatus, handleOverlap[j].AddrOfPinnedObject(), true);
// Pre-load the queue with a request
int len = BufSz;
if (BulkInEndPoint.BeginDataXfer(ref cBufs[j], ref xBufs[j], ref len, ref oLaps[j]) == false)
{
Failures++;
}
}
j++;
}
}
XferData(cBufs, xBufs, oLaps, pktsInfo, handleOverlap); // All loaded. Let's go!
unsafe
{
for (nLocalCount = 0; nLocalCount < QueueSz; nLocalCount++)
{
CyUSB.OVERLAPPED ovLapStatus = new CyUSB.OVERLAPPED();
ovLapStatus = (CyUSB.OVERLAPPED)Marshal.PtrToStructure(handleOverlap[nLocalCount].AddrOfPinnedObject(), typeof(CyUSB.OVERLAPPED));
PInvoke.CloseHandle(ovLapStatus.hEvent);
/*////////////////////////////////////////////////////////////////////////////////////////////
*
* Release the pinned allocation handles.
*
* ////////////////////////////////////////////////////////////////////////////////////////////*/
bufSingleTransfer[nLocalCount].Free();
bufDataAllocation[nLocalCount].Free();
bufPktsInfo[nLocalCount].Free();
handleOverlap[nLocalCount].Free();
cBufs[nLocalCount] = null;
xBufs[nLocalCount] = null;
oLaps[nLocalCount] = null;
}
}
GC.Collect();
}
public unsafe void XferData(byte[][] cBufs, byte[][] xBufs, byte[][] oLaps, ISO_PKT_INFO[][] pktsInfo, GCHandle[] handleOverlap)
{
int k = 0;
int len = 0;
Successes = 0;
Failures = 0;
XferBytes = 0;
t1 = DateTime.Now;
long nIteration = 0;
CyUSB.OVERLAPPED ovData = new CyUSB.OVERLAPPED();
DisplayPacketInfo dp = new DisplayPacketInfo((int x, int y, double z) => UpdatePackageInfo(x, y, z));
for (; bRunning;)
{
nIteration++;
// WaitForXfer
unsafe
{
//fixed (byte* tmpOvlap = oLaps[k])
{
ovData = (CyUSB.OVERLAPPED)Marshal.PtrToStructure(handleOverlap[k].AddrOfPinnedObject(), typeof(CyUSB.OVERLAPPED));
if (!BulkInEndPoint.WaitForXfer(ovData.hEvent, 500))
{
BulkInEndPoint.Abort();
PInvoke.WaitForSingleObject(ovData.hEvent, 500);
}
}
}
// FinishDataXfer
int FirstPackage;
int LastPackage = 0;
int PkgLength;
if (BulkInEndPoint.FinishDataXfer(ref cBufs[k], ref xBufs[k], ref len, ref oLaps[k]))
{
XferBytes += len;
//if(xBufs[k] != null)
if (len != 0)
{
byte[] DataToFile = new byte[len];
Array.Copy(xBufs[k], DataToFile, len);
//AcqDataBuffer.SetData(DataToFile);
ThreadData.Add(DataToFile);
FirstPackage = DataToFile[0] + (DataToFile[1] << 8) + (DataToFile[2] << 16) + (DataToFile[3] << 24);
PkgLength = DataToFile.Length;
LastPackage = DataToFile[PkgLength - 4] + (DataToFile[PkgLength - 3] << 8) + (DataToFile[PkgLength - 2] << 16) + (DataToFile[PkgLength - 1] << 24);
}
Successes++;
}
else
{
Failures++;
}
// Re-submit this buffer into the queue
len = BufSz;
if (BulkInEndPoint.BeginDataXfer(ref cBufs[k], ref xBufs[k], ref len, ref oLaps[k]) == false)
{
Failures++;
}
Thread.Sleep(10);
k++;
if (k == QueueSz) // Only update displayed stats once each time through the queue
{
k = 0;
t2 = DateTime.Now;
elapsed = t2 - t1;
xferRate = XferBytes / elapsed.TotalMilliseconds;
xferRate = xferRate / (1000.0);
Dispatcher.Invoke(dp, (int)Successes, (int)Failures, (double)xferRate);
// Call StatusUpdate() in the main thread
//if (bRunning == true) this.Invoke(updateUI);
// For small QueueSz or PPX, the loop is too tight for UI thread to ever get service.
// Without this, app hangs in those scenarios.
Thread.Sleep(0);
}
Thread.Sleep(0);
} // End infinite loop
// Let's recall all the queued buffer and abort the end point.
BulkInEndPoint.Abort();
//AcqDataBuffer.SetDataDone();
ThreadData.CompleteAdding();
}
/*Summary
* Called at the end of recursive method, LockNLoad().
* XferData() implements the infinite transfer loop
*/
public unsafe void XferData(byte[][] cBufs, byte[][] xBufs, byte[][] oLaps, ISO_PKT_INFO[][] pktsInfo, GCHandle[] handleOverlap)
{
int k = 0;
int len = 0;
Successes = 0;
Failures = 0;
XferBytes = 0;
t1 = DateTime.Now;
long nIteration = 0;
CyUSB.OVERLAPPED ovData = new CyUSB.OVERLAPPED();
for (; bRunning;)
{
nIteration++;
// WaitForXfer
unsafe
{
//fixed (byte* tmpOvlap = oLaps[k])
{
ovData = (CyUSB.OVERLAPPED)Marshal.PtrToStructure(handleOverlap[k].AddrOfPinnedObject(), typeof(CyUSB.OVERLAPPED));
if (!EndPoint.WaitForXfer(ovData.hEvent, 500))
{
EndPoint.Abort();
PInvoke.WaitForSingleObject(ovData.hEvent, 500);
}
}
}
if (EndPoint.Attributes == 1)
{
CyIsocEndPoint isoc = EndPoint as CyIsocEndPoint;
// FinishDataXfer
if (isoc.FinishDataXfer(ref cBufs[k], ref xBufs[k], ref len, ref oLaps[k], ref pktsInfo[k]))
{
//XferBytes += len;
//Successes++;
ISO_PKT_INFO[] pkts = pktsInfo[k];
for (int j = 0; j < PPX; j++)
{
if (pkts[j].Status == 0)
{
XferBytes += pkts[j].Length;
Successes++;
}
else
{
Failures++;
}
pkts[j].Length = 0;
}
}
else
{
Failures++;
}
}
else
{
// FinishDataXfer
if (EndPoint.FinishDataXfer(ref cBufs[k], ref xBufs[k], ref len, ref oLaps[k]))
{
XferBytes += len;
Successes++;
}
else
{
Failures++;
}
}
// Re-submit this buffer into the queue
len = BufSz;
if (EndPoint.BeginDataXfer(ref cBufs[k], ref xBufs[k], ref len, ref oLaps[k]) == false)
{
Failures++;
}
k++;
if (k == QueueSz) // Only update displayed stats once each time through the queue
{
k = 0;
t2 = DateTime.Now;
elapsed = t2 - t1;
xferRate = (long)(XferBytes / elapsed.TotalMilliseconds);
xferRate = xferRate / (int)100 * (int)100;
// Call StatusUpdate() in the main thread
if (bRunning == true)
{
this.Invoke(updateUI);
}
// For small QueueSz or PPX, the loop is too tight for UI thread to ever get service.
// Without this, app hangs in those scenarios.
Thread.Sleep(0);
}
Thread.Sleep(0);
} // End infinite loop
// Let's recall all the queued buffer and abort the end point.
EndPoint.Abort();
}