private int NextCounterId()
{
long nowMs = _epochClock.Time();
for (int i = 0, size = _freeList.Count; i < size; i++)
{
int counterId = _freeList[i];
long deadlineMs = MetaDataBuffer.GetLongVolatile(MetaDataOffset(counterId) + FREE_FOR_REUSE_DEADLINE_OFFSET);
if (nowMs >= deadlineMs)
{
_freeList.Remove(i);
ValuesBuffer.PutLongOrdered(CounterOffset(counterId), 0L);
return(counterId);
}
}
return(++_idHighWaterMark);
}
/// <summary>
/// Get the deadline (in milliseconds) for when a given counter id may be reused.
/// </summary>
/// <param name="counterId"> to be read. </param>
/// <returns> deadline (in milliseconds) for when a given counter id may be reused or <seealso cref="NOT_FREE_TO_REUSE"/> if
/// currently in use. </returns>
public long GetFreeForReuseDeadline(int counterId)
{
ValidateCounterId(counterId);
return(MetaDataBuffer.GetLongVolatile(MetaDataOffset(counterId) + FREE_FOR_REUSE_DEADLINE_OFFSET));
}