public FractalHeapIndirectBlock(FractalHeapHeader header, H5BinaryReader reader, Superblock superblock, uint rowCount) : base(reader)
{
_superblock = superblock;
this.RowCount = rowCount;
// signature
var signature = reader.ReadBytes(4);
H5Utils.ValidateSignature(signature, FractalHeapIndirectBlock.Signature);
// version
this.Version = reader.ReadByte();
// heap header address
this.HeapHeaderAddress = superblock.ReadOffset(reader);
// block offset
var blockOffsetFieldSize = (int)Math.Ceiling(header.MaximumHeapSize / 8.0);
this.BlockOffset = H5Utils.ReadUlong(this.Reader, (ulong)blockOffsetFieldSize);
// H5HFcache.c (H5HF__cache_iblock_deserialize)
var length = rowCount * header.TableWidth;
this.Entries = new FractalHeapEntry[length];
for (uint i = 0; i < this.Entries.Length; i++)
{
/* Decode child block address */
this.Entries[i].Address = _superblock.ReadOffset(reader);
/* Check for heap with I/O filters */
if (header.IOFilterEncodedLength > 0)
{
/* Decode extra information for direct blocks */
if (i < (header.MaxDirectRows * header.TableWidth))
{
/* Size of filtered direct block */
this.Entries[i].FilteredSize = _superblock.ReadLength(reader);
/* I/O filter mask for filtered direct block */
this.Entries[i].FilterMask = reader.ReadUInt32();
}
}
/* Count child blocks */
if (!superblock.IsUndefinedAddress(this.Entries[i].Address))
{
this.ChildCount++;
this.MaxChildIndex = i;
}
}
// checksum
this.Checksum = reader.ReadUInt32();
}