private bool DequeueChunk(out string error)
{
error = null;
try
{
Data.ChunkData chunk = null;
lock (ChunkInsertQueue)
{
try
{
chunk = ChunkInsertQueue.Dequeue();
}
//empty queue
catch (InvalidOperationException) { }
}
if (chunk != null)
{
lock (chunk)
{
if (!DAO.Terrain.ChunkData.Insert(chunk) && chunk.DataBaseID <= -1)
{
lock (ChunkInsertQueue)
{
//try again later
ChunkInsertQueue.Enqueue(chunk);
}
}
else
{
//atualiza index de base de dados adicionando o novo id
var dataBaseHashKey = chunk.DataBaseID.GetHashCode();
var dataBaseChunks = this.ChunksByDataBaseID.GetOrAdd(dataBaseHashKey, new List <Data.ChunkData>());
lock (dataBaseChunks)
{
dataBaseChunks.Add(chunk);
}
}
}
}
return(true);
}
catch (Exception ex)
{
error = ex.ToString();
return(false);
}
}
