public BTree(StreamSource storage, string prefix)
{
Storage = storage;
Prefix = prefix;
IndexStream = Storage.Open(prefix + "index");
KeyStream = Storage.Open(prefix + "keys");
DataStream = Storage.Open(prefix + "data");
VersionCheck(IndexStream);
VersionCheck(KeyStream);
VersionCheck(DataStream);
bool needInit = IndexStream.Length < BTreeHeader.Size;
IndexStream.LengthChanging += IndexStream_LengthChanging;
IndexStream.LengthChanged += IndexStream_LengthChanged;
DataStream.LengthChanging += DataStream_LengthChanging;
DataStream.LengthChanged += DataStream_LengthChanged;
_GetKeyOfEntry = ReadKey;
_HeaderRange = IndexStream.AccessRangeUncached(0, BTreeHeader.Size);
if (needInit)
{
InitializeBTree();
}
_FreelistBucketLocks = new object[FreelistIndex.BucketCount];
for (int i = 0; i < _FreelistBucketLocks.Length; i++)
{
_FreelistBucketLocks[i] = new object();
}
EnsureFreelistExists();
}