public static void Main()
{
if (MessageLength < BitUtil.SIZE_OF_LONG)
{
throw new ArgumentException($"Message length must be at least {BitUtil.SIZE_OF_LONG:D} bytes");
}
ComputerSpecifications.Dump();
var context = new Aeron.Context();
var reporter = new RateReporter(1000, PrintRate);
_reporterThread = new Thread(_ => reporter.Run());
_reporterThread.Start();
// Connect to media driver and add publication to send messages on the configured channel and stream ID.
// The Aeron and Publication classes implement AutoCloseable, and will automatically
// clean up resources when this try block is finished.
using (var aeron = Aeron.Connect(context))
using (var publication = aeron.AddPublication(Channel, StreamID))
using (var byteBuffer = BufferUtil.AllocateDirectAligned(MessageLength, BitUtil.CACHE_LINE_LENGTH))
using (var buffer = new UnsafeBuffer(byteBuffer))
{
do
{
_printingActive = true;
Console.WriteLine($"Streaming {NumberOfMessages} messages of {(RandomMessageLength ? " random" : "")} size {MessageLength} bytes to {Channel} on stream Id {StreamID}");
long backPressureCount = 0;
for (long i = 0; i < NumberOfMessages; i++)
{
var length = LengthGenerator.AsInt;
buffer.PutLong(0, i);
OfferIdleStrategy.Reset();
while (publication.Offer(buffer, 0, length) < 0L)
{
// The offer failed, which is usually due to the publication
// being temporarily blocked. Retry the offer after a short
// spin/yield/sleep, depending on the chosen IdleStrategy.
backPressureCount++;
OfferIdleStrategy.Idle();
}
reporter.OnMessage(1, length);
}
Console.WriteLine("Done streaming. Back pressure ratio " + (double) backPressureCount/NumberOfMessages);
if (0 < LingerTimeoutMs)
{
Console.WriteLine("Lingering for " + LingerTimeoutMs + " milliseconds...");
Thread.Sleep((int) LingerTimeoutMs);
}
_printingActive = false;
Console.WriteLine("Execute again?");
} while (Console.ReadLine() == "y");
}
reporter.Halt();
_reporterThread.Join();
}
public static void FillMetaData(UnsafeBuffer cncMetaDataBuffer, int toDriverBufferLength, int toClientsBufferLength, int counterMetaDataBufferLength, int counterValuesBufferLength, long clientLivenessTimeout, int errorLogBufferLength)
{
cncMetaDataBuffer.PutInt(CncVersionOffset(0), CNC_VERSION);
cncMetaDataBuffer.PutInt(ToDriverBufferLengthOffset(0), toDriverBufferLength);
cncMetaDataBuffer.PutInt(ToClientsBufferLengthOffset(0), toClientsBufferLength);
cncMetaDataBuffer.PutInt(CountersMetaDataBufferLengthOffset(0), counterMetaDataBufferLength);
cncMetaDataBuffer.PutInt(CountersValuesBufferLengthOffset(0), counterValuesBufferLength);
cncMetaDataBuffer.PutLong(ClientLivenessTimeoutOffset(0), clientLivenessTimeout);
cncMetaDataBuffer.PutInt(ErrorLogBufferLengthOffset(0), errorLogBufferLength);
}
/// <summary>
/// Set the initial value for the termId in the upper bits of the tail counter.
/// </summary>
/// <param name="termMetaData"> contain the tail counter. </param>
/// <param name="initialTermId"> to be set. </param>
public static void InitialiseTailWithTermId(UnsafeBuffer termMetaData, int initialTermId)
{
termMetaData.PutLong(TERM_TAIL_COUNTER_OFFSET, ((long) initialTermId) << 32);
}
/// <summary>
/// Return an initialised default Data Frame Header.
/// </summary>
/// <param name="sessionId"> for the header </param>
/// <param name="streamId"> for the header </param>
/// <param name="termId"> for the header </param>
/// <returns> byte array containing the header </returns>
public static UnsafeBuffer CreateDefaultHeader(int sessionId, int streamId, int termId)
{
var buffer = new UnsafeBuffer(new byte[HEADER_LENGTH]);
buffer.PutByte(VERSION_FIELD_OFFSET, CURRENT_VERSION);
buffer.PutByte(FLAGS_FIELD_OFFSET, (byte)BEGIN_AND_END_FLAGS);
buffer.PutShort(TYPE_FIELD_OFFSET, HDR_TYPE_DATA);
buffer.PutInt(SESSION_ID_FIELD_OFFSET, sessionId);
buffer.PutInt(STREAM_ID_FIELD_OFFSET, streamId);
buffer.PutInt(TERM_ID_FIELD_OFFSET, termId);
buffer.PutLong(RESERVED_VALUE_OFFSET, DEFAULT_RESERVE_VALUE);
return buffer;
}
/// <summary>
/// Set the correlation ID used for this log.
/// </summary>
/// <param name="logMetaDataBuffer"> containing the meta data. </param>
/// <param name="id"> value to be set. </param>
public static void CorrelationId(UnsafeBuffer logMetaDataBuffer, long id)
{
logMetaDataBuffer.PutLong(LOG_CORRELATION_ID_OFFSET, id);
}