private void ConnectToDriver()
{
var startMs = _epochClock.Time();
while (!_cncFile.Exists)
{
if (_epochClock.Time() > startMs + _driverTimeoutMs)
{
throw new DriverTimeoutException("CnC file is created by not initialised.");
}
Thread.Yield();
}
_cncByteBuffer = IoUtil.MapExistingFile(CncFile().FullName, MapMode.ReadWrite);
_cncMetaDataBuffer = CncFileDescriptor.CreateMetaDataBuffer(_cncByteBuffer);
int cncVersion;
while (0 == (cncVersion = _cncMetaDataBuffer.GetInt(CncFileDescriptor.CncVersionOffset(0))))
{
if (_epochClock.Time() > startMs + _driverTimeoutMs)
{
throw new DriverTimeoutException("CnC file is created by not initialised.");
}
Thread.Yield();
}
if (CncFileDescriptor.CNC_VERSION != cncVersion)
{
throw new InvalidOperationException(
"aeron cnc file version not understood: version=" + cncVersion);
}
}
/// <summary>
/// This is called automatically by <seealso cref="Connect()"/> and its overloads.
/// There is no need to call it from a client application. It is responsible for providing default
/// values for options that are not individually changed through field setters.
/// </summary>
/// <returns> this Aeron.Context for method chaining. </returns>
public Context Conclude()
{
_cncFile = new FileInfo(Path.Combine(_aeronDirectoryName, CncFileDescriptor.CNC_FILE));
if (_epochClock == null)
{
_epochClock = new SystemEpochClock();
}
if (_nanoClock == null)
{
_nanoClock = new SystemNanoClock();
}
if (_idleStrategy == null)
{
_idleStrategy = new SleepingIdleStrategy(IdleSleepMs);
}
if (CncFile() != null)
{
ConnectToDriver();
}
if (_toClientBuffer == null)
{
var receiver =
new BroadcastReceiver(CncFileDescriptor.CreateToClientsBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
_toClientBuffer = new CopyBroadcastReceiver(receiver);
}
if (_toDriverBuffer == null)
{
_toDriverBuffer =
new ManyToOneRingBuffer(CncFileDescriptor.CreateToDriverBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
}
if (CountersMetaDataBuffer() == null)
{
CountersMetaDataBuffer(CncFileDescriptor.CreateCountersMetaDataBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
}
if (CountersValuesBuffer() == null)
{
CountersValuesBuffer(CncFileDescriptor.CreateCountersValuesBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
}
_interServiceTimeout = CncFileDescriptor.ClientLivenessTimeout(_cncMetaDataBuffer);
if (_logBuffersFactory == null)
{
_logBuffersFactory = new MappedLogBuffersFactory();
}
if (_errorHandler == null)
{
_errorHandler = DEFAULT_ERROR_HANDLER;
}
if (_availableImageHandler == null)
{
_availableImageHandler = image => { };
}
if (_unavailableImageHandler == null)
{
_unavailableImageHandler = image => { };
}
return(this);
}
/// <summary>
/// This is called automatically by <seealso cref="Connect()"/> and its overloads.
/// There is no need to call it from a client application. It is responsible for providing default
/// values for options that are not individually changed through field setters.
/// </summary>
/// <returns> this Aeron.Context for method chaining. </returns>
public Context Conclude()
{
try
{
_cncFile = new FileInfo(Path.Combine(_aeronDirectoryName, CncFileDescriptor.CNC_FILE));
if (_epochClock == null)
{
_epochClock = new SystemEpochClock();
}
if (_nanoClock == null)
{
_nanoClock = new SystemNanoClock();
}
if (_idleStrategy == null)
{
_idleStrategy = new SleepingIdleStrategy(IdleSleepMs);
}
if (CncFile() != null)
{
_cncByteBuffer = IoUtil.MapExistingFile(CncFile().FullName);
_cncMetaDataBuffer = CncFileDescriptor.CreateMetaDataBuffer(_cncByteBuffer);
var cncVersion = _cncMetaDataBuffer.GetInt(CncFileDescriptor.CncVersionOffset(0));
if (CncFileDescriptor.CNC_VERSION != cncVersion)
{
throw new InvalidOperationException(
"aeron cnc file version not understood: version=" + cncVersion);
}
}
if (_toClientBuffer == null)
{
var receiver =
new BroadcastReceiver(CncFileDescriptor.CreateToClientsBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
_toClientBuffer = new CopyBroadcastReceiver(receiver);
}
if (_toDriverBuffer == null)
{
_toDriverBuffer =
new ManyToOneRingBuffer(CncFileDescriptor.CreateToDriverBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
}
if (CountersMetaDataBuffer() == null)
{
CountersMetaDataBuffer(CncFileDescriptor.CreateCountersMetaDataBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
}
if (CountersValuesBuffer() == null)
{
CountersValuesBuffer(CncFileDescriptor.CreateCountersValuesBuffer(_cncByteBuffer,
_cncMetaDataBuffer));
}
_interServiceTimeout = CncFileDescriptor.ClientLivenessTimeout(_cncMetaDataBuffer);
if (_logBuffersFactory == null)
{
_logBuffersFactory = new MappedLogBuffersFactory();
}
if (_errorHandler == null)
{
_errorHandler = DEFAULT_ERROR_HANDLER;
}
if (_availableImageHandler == null)
{
_availableImageHandler = image => { };
}
if (_unavailableImageHandler == null)
{
_unavailableImageHandler = image => { };
}
}
catch (
Exception ex)
{
Console.WriteLine("***");
Console.WriteLine("***");
Console.WriteLine("Failed to connect to the Media Driver - is it currently running?");
Console.WriteLine("***");
Console.WriteLine("***");
throw new InvalidOperationException("Could not initialise communication buffers", ex);
}
return(this);
}
