/// <summary>
/// Creates a segment that stores data in memory mapped files
/// </summary>
internal override DefaultPileBase._segment MakeSegment(int segmentNumber)
{
var memory = new MMFMemory(DataDirectory, segmentNumber, SegmentSize);
var result = new DefaultPileBase._segment(this, memory, true);
return(result);
}
protected override void DoStart()
{
if (!Directory.Exists(DataDirectoryRoot))
{
throw new PileException(StringConsts.PILE_MMF_NO_DATA_DIRECTORY_ROOT_ERROR.Args(DataDirectoryRoot));
}
Directory.CreateDirectory(DataDirectory);
readCurrentTypeRegistry();
base.DoStart();
//load existing data
var segFiles = MMFMemory.GetSegmentFileNames(DataDirectory);
var pidx = -1;
for (var i = 0; i < segFiles.Length; i++)
{
var segFile = segFiles[i];
for (var j = pidx + 1; j < segFile.Value; j++)
{
__addSegmentAtStart(null);
}
pidx = segFile.Value;
var memory = new MMFMemory(DataDirectory, segFile.Value);
var segment = new DefaultPileBase._segment(this, memory, false);
__addSegmentAtStart(segment);
}
//1 thread since this is a io-bound operation
var segments = __getSegmentsAtStart();
Task.Delay(500).ContinueWith((a) => crawlSegmentsAtStart(segments), TaskContinuationOptions.LongRunning);
m_ManagerEvent = new Azos.Time.Event(App.EventTimer,
interval: new TimeSpan(0, 0, 20),
enabled: true,
body: _ => AcceptManagerVisit(this, DateTime.UtcNow),
bodyAsyncModel: Time.EventBodyAsyncModel.AsyncTask)
{
};
}