private void applyTombstones()
{
Tombstone cur = null, prev = null;
List <ulong> batch = new List <ulong>(4096);
tombstoner.Walk(new WalkFn(walk), new object[] { cur, prev, batch });
if (batch.Count > 0)
{
index.DeleteRange(batch, cur.Min, cur.Max);
}
}
public void Walk(WalkFn fn, object obj)
{
lock (lockthis)
{
using (FileStream fs = File.Open(Path, FileMode.Open))
{
using (GZipStream gzip = new GZipStream(fs, CompressionMode.Decompress))
{
byte[] bytes = new byte[headerSize];
int count = gzip.Read(bytes, 0, 4);
if (count == 4)
{
while (true)
{
try
{
bytes = new byte[24];
count = gzip.Read(bytes, 0, 24);
if (count < 24)
{
break;
}
Tombstone tombstone = new Tombstone();
tombstone.Sid = BitConverter.ToUInt64(bytes, 0);
tombstone.Min = BitConverter.ToInt64(bytes, 8);
tombstone.Max = BitConverter.ToInt64(bytes, 16);
fn(tombstone, obj);
}
catch (Exception ex)
{
Logger.Error("Walk error: " + ex.Message);
break;
}
}
}
}
}
}
}
private void walk(Tombstone ts, object obj)
{
object[] paras = (object[])obj;
Tombstone cur = (Tombstone)paras[0];
Tombstone prev = (Tombstone)paras[1];
List <ulong> batch = (List <ulong>)paras[2];
cur = ts;
if (batch.Count > 0)
{
if (prev.Min != cur.Min || prev.Max != cur.Max)
{
index.DeleteRange(batch, prev.Min, prev.Max);
batch.Clear();
}
}
batch.Add(ts.Sid);
if (batch.Count > 4096)
{
index.DeleteRange(batch, prev.Min, prev.Max);
batch.Clear();
}
prev = ts;
}
private void append(Tombstone t, object obj)
{
((List <Tombstone>)obj).Add(t);
}