void StoreHashIndex()
{
RemoveAllHashIndexAndUnknownFiles();
var file = _fileCollection.AddFile("chi");
var writerController = file.GetExclusiveAppenderWriter();
var writer = new SpanWriter(writerController);
var keyCount = _cache.Count;
var fileInfo = new FileHashIndex(AllocNewFileGeneration(), _keySize, keyCount);
_fileInfos.TryAdd(file.Index, fileInfo);
fileInfo.WriteHeader(ref writer);
var keyBuf = ByteBuffer.NewSync(new byte[_keySize]);
foreach (var cachePair in _cache)
{
cachePair.Key.FillBuffer(keyBuf);
writer.WriteVUInt32(cachePair.Value.FileOfs);
writer.WriteVUInt32(cachePair.Value.FileId);
writer.WriteVUInt32(cachePair.Value.AccessRate);
writer.WriteVUInt32(cachePair.Value.ContentLength);
writer.WriteBlock(keyBuf);
}
writer.WriteVUInt32(0); // Zero FileOfs as End of file mark
writer.Sync();
file.HardFlushTruncateSwitchToDisposedMode();
}
void LoadContent()
{
SpanReader reader;
foreach (var collectionFile in _fileCollection.Enumerate())
{
reader = new SpanReader(collectionFile.GetExclusiveReader());
if (!reader.CheckMagic(MagicStartOfFile))
{
continue; // Don't touch files alien files
}
var fileType = (DiskChunkFileType)reader.ReadUInt8();
var fileInfo = fileType switch
{
DiskChunkFileType.HashIndex => new FileHashIndex(ref reader),
DiskChunkFileType.PureValues => new FilePureValues(ref reader),
_ => UnknownFile.Instance
};
if (_fileGeneration < fileInfo.Generation)
{
_fileGeneration = fileInfo.Generation;
}
_fileInfos.TryAdd(collectionFile.Index, fileInfo);
}
var hashFilePair =
_fileInfos.Where(f => f.Value.FileType == DiskChunkFileType.HashIndex).OrderByDescending(
f => f.Value.Generation).FirstOrDefault();
if (hashFilePair.Value == null)
{
return;
}
reader = new SpanReader(_fileCollection.GetFile(hashFilePair.Key).GetExclusiveReader());
FileHashIndex.SkipHeader(ref reader);
if (((FileHashIndex)hashFilePair.Value).KeySize != _keySize)
{
return;
}
var keyBuf = ByteBuffer.NewSync(new byte[_keySize]);
while (true)
{
var cacheValue = new CacheValue();
cacheValue.FileOfs = reader.ReadVUInt32();
if (cacheValue.FileOfs == 0)
{
break;
}
cacheValue.FileId = reader.ReadVUInt32();
cacheValue.AccessRate = reader.ReadVUInt32();
cacheValue.ContentLength = reader.ReadVUInt32();
reader.ReadBlock(keyBuf);
_cache.TryAdd(new ByteStructs.Key20(keyBuf), cacheValue);
}
}
void LoadContent()
{
AbstractBufferedReader reader;
foreach (var collectionFile in _fileCollection.Enumerate())
{
reader = collectionFile.GetExclusiveReader();
if (!reader.CheckMagic(MagicStartOfFile)) continue; // Don't touch files alien files
var fileType = (DiskChunkFileType)reader.ReadUInt8();
IFileInfo fileInfo;
switch (fileType)
{
case DiskChunkFileType.HashIndex:
fileInfo = new FileHashIndex(reader);
break;
case DiskChunkFileType.PureValues:
fileInfo = new FilePureValues(reader);
break;
default:
fileInfo = UnknownFile.Instance;
break;
}
if (_fileGeneration < fileInfo.Generation) _fileGeneration = fileInfo.Generation;
_fileInfos.TryAdd(collectionFile.Index, fileInfo);
}
var hashFilePair =
_fileInfos.Where(f => f.Value.FileType == DiskChunkFileType.HashIndex).OrderByDescending(
f => f.Value.Generation).FirstOrDefault();
if (hashFilePair.Value == null) return;
reader = _fileCollection.GetFile(hashFilePair.Key).GetExclusiveReader();
FileHashIndex.SkipHeader(reader);
if (((FileHashIndex)hashFilePair.Value).KeySize != _keySize) return;
var keyBuf = ByteBuffer.NewSync(new byte[_keySize]);
while (true)
{
var cacheValue = new CacheValue();
cacheValue.FileOfs = reader.ReadVUInt32();
if (cacheValue.FileOfs == 0) break;
cacheValue.FileId = reader.ReadVUInt32();
cacheValue.AccessRate = reader.ReadVUInt32();
cacheValue.ContentLength = reader.ReadVUInt32();
reader.ReadBlock(keyBuf);
_cache.TryAdd(new ByteStructs.Key20(keyBuf), cacheValue);
}
}
void StoreHashIndex()
{
RemoveAllHashIndexAndUnknownFiles();
var file = _fileCollection.AddFile("chi");
var writer = file.GetAppenderWriter();
var keyCount = _cache.Count;
var fileInfo = new FileHashIndex(AllocNewFileGeneration(), _keySize, keyCount);
_fileInfos.TryAdd(file.Index, fileInfo);
fileInfo.WriteHeader(writer);
var keyBuf = ByteBuffer.NewSync(new byte[_keySize]);
foreach (var cachePair in _cache)
{
cachePair.Key.FillBuffer(keyBuf);
writer.WriteVUInt32(cachePair.Value.FileOfs);
writer.WriteVUInt32(cachePair.Value.FileId);
writer.WriteVUInt32(cachePair.Value.AccessRate);
writer.WriteVUInt32(cachePair.Value.ContentLength);
writer.WriteBlock(keyBuf);
}
writer.WriteVUInt32(0); // Zero FileOfs as End of file mark
file.HardFlush();
}
