public void SharedMem_Wait()
{
sm1 = null;
sm2 = null;
try
{
a = 0;
b = 0;
thread = new Thread(new ThreadStart(WaitThread));
sm1 = new SharedMem();
sm1.Open("Shared", 100, SharedMem.OpenMode.CREATE_OPEN);
sm1.Lock(true);
thread.Start();
Thread.Sleep(1000);
a = 1;
sm1.Unlock();
thread.Join();
Assert.IsTrue(locked);
Assert.AreEqual(1, b);
}
finally
{
if (sm1 != null)
{
sm1.Close();
}
}
}
private void sharedMemoryToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
ContextMenu menu = new ContextMenu();
NodeInfo[] infos = SharedMem.GetNodeInfos();
foreach (NodeInfo info in infos)
{
MenuItem item = btnOpen_SharedMemoryCreateMenuItem(info.name, info.dstChan);
menu.MenuItems.Add(item);
}
if (infos.Length == 0)
{
MenuItem item = new MenuItem("(No nodes found)");
item.Enabled = false;
menu.MenuItems.Add(item);
}
menu.Show(this, new System.Drawing.Point(10, 10));
}
catch (Exception ex)
{
MessageBox.Show("Failed to init shared memory. Is the correct shmemchain.dll in the program directory? (" + ex.ToString() + ")");
}
}
public void SharedMem_Lock()
{
sm1 = null;
sm2 = null;
try
{
locked = false;
thread = new Thread(new ThreadStart(LockThread));
sm1 = new SharedMem();
sm1.Open("Shared", 100, SharedMem.OpenMode.CREATE_OPEN);
sm1.Lock(true);
thread.Start();
Thread.Sleep(1000);
sm1.Unlock();
thread.Join();
Assert.IsTrue(locked);
}
finally
{
if (sm1 != null)
{
sm1.Close();
}
}
}
public void SharedMem_CreateFail()
{
SharedMem mem1 = null;
SharedMem mem2 = null;
try
{
mem1 = new SharedMem();
mem1.Open("Shared", 100, SharedMem.OpenMode.CREATE_ONLY);
mem2 = new SharedMem();
mem2.Open("Shared", 100, SharedMem.OpenMode.CREATE_ONLY);
Assert.Fail();
}
catch
{
// This is supposed to throw an exception
}
finally
{
if (mem1 != null)
{
mem1.Close();
}
if (mem2 != null)
{
mem2.Close();
}
}
}
void Start()
{
Debug.Log("[ReadSharedMemory] initializing objects...");
// only for .NET 4.0 and above
//MemoryMappedFile mmf = MemoryMappedFile.CreateNew(TAG_NAME, SHARED_MEMORY_SIZE);
// for all versions of .NET
map = new SharedMem(TAG_NAME, true, SHARED_MEMORY_SIZE);
}
public SharedMemSink(Control displayControl)
{
Shmem = new SharedMem(-2, 0, "Demodulator output", 8192);
StatusLabel = new Label();
StatusLabel.Text = "Writer idle";
StatusLabel.Dock = DockStyle.Fill;
Status = "";
displayControl.Controls.Add(StatusLabel);
}
public NetworkDeviceControl()
{
InitializeComponent();
NetShmemSink = new SharedMem(-2, 0, "Network Output Node");
_SampleSource = new ShmemSampleSource("NetworkReader", NetShmemSink.DstChan, 1, 0);
_SampleSource.InvertedSpectrum = false;
_SampleSource.SamplingRateChanged += new EventHandler(_SampleSource_SamplingRateChanged);
_SampleSource.DataFormat = SampleFormat;
_SampleSource.SamplesPerBlock = 8192;
}
public void ProcessData(byte[] dataBuffer, SharedMem outChan)
{
byte[] outBuffer = null;
int outBufferPos = 0;
if (outChan != null)
{
outBuffer = new byte[dataBuffer.Length / 2];
}
lock (SampleValues)
{
const int bytePerSamplePair = 4;
for (int pos = 0; pos < dataBuffer.Length / bytePerSamplePair; pos++)
{
double I = ByteUtil.getDoubleFromBytes(dataBuffer, bytePerSamplePair * pos);
double Q = ByteUtil.getDoubleFromBytes(dataBuffer, bytePerSamplePair * pos + 2);
double phase = Math.Atan2(I, Q);
double strength = 20 * Math.Sqrt(I * I + Q * Q);
while (phase - lastPhase < -(Math.PI / 2))
{
phase += Math.PI;
}
while (phase - lastPhase > Math.PI / 2)
{
phase -= Math.PI;
}
double diff = phase - lastPhase;
double finalDiff = diff * strength;
SampleValues.Add(finalDiff);
if (outBuffer != null)
{
ByteUtil.putBytesFromDouble(outBuffer, 2 * (outBufferPos++), finalDiff);
}
totalPhase += diff;
lastPhase = phase % (2 * Math.PI);
}
}
if (outChan != null)
{
outChan.Write(outBuffer, 0, outBufferPos * 2);
}
}
private void LockThread()
{
sm2 = new SharedMem();
try
{
sm2.Open("Shared", 100, SharedMem.OpenMode.CREATE_OPEN);
locked = sm2.Lock(false) == null;
}
finally
{
sm2.Close();
}
}
private void btnOpen_Click(object sender, EventArgs e)
{
if (ShmemChannel != null)
{
ShmemChannel.Unregister();
ShmemChannel = null;
btnOpen.Text = "Open";
}
else
{
ShmemChannel = new SharedMem(0, -1, "Gauss Generator");
btnOpen.Text = "Close";
}
}
private void WaitThread()
{
sm2 = new SharedMem();
try
{
sm2.Open("Shared", 100, SharedMem.OpenMode.CREATE_OPEN);
locked = sm2.Lock() != null;
b = a;
sm2.Unlock();
}
finally
{
sm2.Close();
}
}
public ShmemSampleSource(string name, int srcChan, int oversampling, double samplingRate, long bufferSize)
: base(oversampling)
{
ShmemChannel = new SharedMem(srcChan, -1, name, bufferSize);
ShmemChannel.ReadTimeout = 100;
ShmemChannel.ReadMode = eReadMode.TimeLimitedNoPartial;
InvertedSpectrum = false;
DataFormat = ByteUtil.eSampleFormat.Direct16BitIQFixedPointLE;
SamplesPerBlock = 1024;
if (samplingRate > 0)
{
InputSamplingRate = samplingRate;
}
}
public HiQSDRDeviceControl()
{
InitializeComponent();
NetShmemSink = new SharedMem(-2, 0, "Network Output Node");
_SampleSource = new ShmemSampleSource("NetworkReader", NetShmemSink.DstChan, 1, 0);
_SampleSource.InvertedSpectrum = false;
_SampleSource.SamplingRateChanged += new EventHandler(_SampleSource_SamplingRateChanged);
_SampleSource.DataFormat = DataFormat;
_SampleSource.ForceInputRate(CurrentRate);
Endpoint = new IPEndPoint(IPAddress.Any, 0);
TransferThread = new Thread(TransferThreadMain);
TransferThread.Start();
radioAcqOff.Checked = true;
}
public void SharedMem_CreateOpen()
{
SharedMem mem1 = null;
SharedMem mem2 = null;
byte * pBuf;
try
{
mem1 = new SharedMem();
mem2 = new SharedMem();
mem1.Open("Shared", 100, SharedMem.OpenMode.CREATE_OPEN);
mem2.Open("Shared", 100, SharedMem.OpenMode.CREATE_OPEN);
pBuf = mem1.Lock(true);
for (int i = 0; i < 100; i++)
{
Assert.AreEqual(0, pBuf[i]);
}
pBuf[0] = 77;
pBuf[99] = 99;
mem1.Unlock();
pBuf = mem2.Lock(true);
Assert.AreEqual(77, pBuf[0]);
Assert.AreEqual(99, pBuf[99]);
}
finally
{
if (mem1 != null)
{
mem1.Close();
}
if (mem2 != null)
{
mem2.Close();
}
}
}
private void btnOpen_SharedMemory(object sender, EventArgs e)
{
ContextMenu menu = new ContextMenu();
NodeInfo[] infos = SharedMem.GetNodeInfos();
foreach (NodeInfo info in infos)
{
MenuItem item = btnOpen_SharedMemoryCreateMenuItem(info.name, info.dstChan);
menu.MenuItems.Add(item);
}
if (infos.Length == 0)
{
MenuItem item = new MenuItem("(No nodes found)");
item.Enabled = false;
menu.MenuItems.Add(item);
}
btnOpen.ContextMenu = menu;
btnOpen.ContextMenu.Show(btnOpen, new Point(10, 10));
}
private void btnOpen_Click(object sender, EventArgs e)
{
if (ShmemChannel != null)
{
ThreadActive = false;
Thread.Sleep(10);
ReadThread.Abort();
ShmemChannel.Unregister();
ShmemChannel = null;
btnOpen.Text = "Open";
}
else
{
ShmemChannel = new SharedMem(0, -1, "C# Test");
ThreadActive = true;
ReadThread = new Thread(new ThreadStart(FFTReadFunc));
ReadThread.Start();
btnOpen.Text = "Close";
}
}
