/// <summary>
/// Used to indicate that this buffer is being abandoned so that its storage may be relcaimed during a future GC cycle.
/// Sets the byteArray to null and the byteArraySize to zero.
/// </summary>
public void Release(QpcTimeStamp qpcTimeStamp, string reason = null)
{
header = BufferHeaderV1.Empty;
bufferPool = null;
byteArray = null;
byteArraySize = 0;
SetState(qpcTimeStamp, Buffers.BufferState.Released, reason);
}
public Message(Buffers.BufferPool bufferSourcePool, Logging.IMesgEmitter issueEmitter = null, Logging.IMesgEmitter stateEmitter = null)
{
this.bufferSourcePool = bufferSourcePool;
StateEmitter = stateEmitter ?? bufferSourcePool.BufferStateEmitter ?? Logging.NullMesgEmitter.Instance;
IssueEmitter = issueEmitter ?? StateEmitter;
}
public override void Write(byte[] buffer, int offset, int count)
{
if (!buffer.IsSafeIndex(offset, length: count))
{
throw new System.ArgumentException("Invalid offset/count combination [bufferSize:{0} offset:{1} count:{2}]".CheckedFormat(buffer.SafeLength(), offset, count));
}
Buffers.BufferPool useBufferPool = message.bufferSourcePool ?? fallbackDefaultBufferPool;
int getFromOffset = offset;
int totalCountTransferred = 0;
for (; totalCountTransferred < count;)
{
if (currentBuffer == null)
{
QpcTimeStamp tsNow = QpcTimeStamp.Now;
currentBuffer = useBufferPool.Acquire(tsNow);
if (currentBuffer == null)
{
throw new System.OutOfMemoryException("Unable to acquire a buffer from the message bufferPool");
}
bufferList.Add(currentBuffer);
if (message.State == MessageState.Initial)
{
message.SetState(tsNow, MessageState.Data, "BufferListWriteStream.Write");
}
}
int iterCopyCount = Math.Min(count - totalCountTransferred, currentBuffer.AvailableSpace);
byte[] copyToBuffer = currentBuffer.byteArray;
if (iterCopyCount <= 8)
{
int copyToOffset = currentBuffer.byteCount;
for (int idx = 0; idx < iterCopyCount; idx++)
{
copyToBuffer[copyToOffset++] = buffer[getFromOffset++];
}
}
else
{
System.Buffer.BlockCopy(buffer, getFromOffset, copyToBuffer, currentBuffer.byteCount, iterCopyCount);
getFromOffset += iterCopyCount;
}
currentBuffer.byteCount += iterCopyCount;
if (currentBuffer.AvailableSpace <= 0)
{
currentBuffer = null;
}
totalCountTransferred += iterCopyCount;
}
}
