public void ShouldGetAndAddLongToNativeBuffer(IAtomicBuffer buffer)
{
Marshal.WriteInt64(buffer.BufferPointer, Index, LongValue);
const long delta = 1;
var beforeValue = buffer.GetAndAddLong(Index, delta);
Assert.That(beforeValue, Is.EqualTo(LongValue));
Assert.That(Marshal.ReadInt64(buffer.BufferPointer, Index), Is.EqualTo(LongValue + delta));
}
/// <summary>
/// Get the next value that can be used for a correlation id on an message when a response needs to be correlated.
///
/// This method should be thread safe.
/// </summary>
/// <returns> the next value in the correlation sequence. </returns>
public long NextCorrelationId()
{
return(_buffer.GetAndAddLong(_correlationIdCounterIndex, 1));
}
/// <summary>
/// Perform an atomic increment that will not lose updates across threads.
/// </summary>
/// <returns> the previous value of the counter </returns>
public long Increment()
{
return(_buffer.GetAndAddLong(_offset, 1));
}
public void ShouldAppendFrameToEmptyLog()
{
int headerLength = _defaultHeader.Capacity;
UnsafeBuffer buffer = new UnsafeBuffer(new byte[128]);
const int msgLength = 20;
int frameLength = msgLength + headerLength;
int alignedFrameLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
const int tail = 0;
A.CallTo(() => _metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, alignedFrameLength)).Returns(TermAppender.Pack(TermID, tail));
Assert.That(_termAppender.AppendUnfragmentedMessage(_headerWriter, buffer, 0, msgLength), Is.EqualTo((long)alignedFrameLength));
A.CallTo(() => _metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, alignedFrameLength)).MustHaveHappened()
.Then(A.CallTo(() => _headerWriter.Write(_termBuffer, tail, frameLength, TermID)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutBytes(headerLength, buffer, 0, msgLength)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(tail, frameLength)).MustHaveHappened());
}
private long GetAndAddRawTail(int alignedLength)
{
return(_metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, alignedLength));
}