public unsafe PacketGenerator(string pciAddr)
{
InitMempool();
var dev = new IxgbeDevice(pciAddr, 1, 1);
// TODO: switch to C# 7.3 and replace with Span<PacketBuffer> buffers = stackalloc PacketBuffer[BatchSize];
var buffersArray = stackalloc PacketBuffer[BatchSize];
var buffers = new Span <PacketBuffer>(buffersArray, BatchSize);
var statsOld = new DeviceStats(dev);
var statsNew = new DeviceStats(dev);
ulong counter = 0;
var stopWatch = new Stopwatch();
stopWatch.Start();
int seqNum = 0;
while (true)
{
var batchCount = _mempool.GetPacketBuffers(buffers);
var batch = buffers.Slice(0, batchCount);
foreach (var buf in batch)
{
buf.WriteData(PacketSize - 4, seqNum++);
}
dev.TxBatchBusyWait(0, batch);
if ((counter++ & 0xFFF) == 0 && stopWatch.ElapsedMilliseconds > 100)
{
stopWatch.Stop();
var nanos = stopWatch.ElapsedTicks;
dev.ReadStats(ref statsNew);
statsNew.PrintStatsDiff(ref statsOld, (ulong)nanos);
statsOld = statsNew;
counter = 0;
stopWatch.Restart();
}
}
}