private void StartSort(long ps)
{
logger.LogInfo("Copying temp file...");
File.Copy(path, path + ".tmp");
logger.LogInfo("Resize temp file...");
var newFilesSize = (long)index.Count * valueSize + offset;
logger.LogInfo($"New file size: {newFilesSize}");
using (var f = File.Open(path + ".tmp", FileMode.OpenOrCreate, FileAccess.ReadWrite))
f.SetLength(newFilesSize);
logger.LogInfo("Sorting...");
var tmpAccessor = new MemoryAccessor(path + ".tmp", 0, ps);
var sortedIndex = new SortedDictionary <TKey, long>(index);
var newIndex = new Dictionary <TKey, long>();
var off = offset;
foreach (var kv in sortedIndex)
{
Unsafe.Write(tmpAccessor.GetPtr(off), accessor.Get <T>(kv.Value));
newIndex.Add(kv.Key, off);
off += valueSize;
}
accessor.Dispose();
tmpAccessor.Dispose();
logger.LogInfo("Replace files...");
File.Delete(path);
File.Move(path + ".tmp", path);
logger.LogInfo("Reload database...");
accessor = new MemoryAccessor(path, 0, pageSize);
fileSize = new FileInfo(path).Length;
index = newIndex;
}
private TKey GetKey(MemoryAccessor ma, long index)
{
return(ma.Get <TKey>(GetAbsoluteOffset(index) + keyOffset));
}
