public unsafe void Commit()
{
if (Flags != (TransactionFlags.ReadWrite))
{
return; // nothing to do
}
FlushAllMultiValues();
_freeSpaceRepository.FlushFreeState(this);
foreach (var kvp in _treesInfo)
{
var txInfo = kvp.Value;
var tree = kvp.Key;
tree.DebugValidateTree(this, txInfo.RootPageNumber);
txInfo.Flush();
if (string.IsNullOrEmpty(kvp.Key.Name))
{
continue;
}
var treePtr = (TreeRootHeader *)_env.Root.DirectAdd(this, tree.Name, sizeof(TreeRootHeader));
tree.State.CopyTo(treePtr);
}
FlushFreePages(); // this is the the free space that is available when all concurrent transactions are done
if (_rootTreeData != null)
{
_env.Root.DebugValidateTree(this, _rootTreeData.RootPageNumber);
_rootTreeData.Flush();
}
if (_fresSpaceTreeData != null)
{
_env.FreeSpaceRoot.DebugValidateTree(this, _fresSpaceTreeData.RootPageNumber);
_fresSpaceTreeData.Flush();
}
#if DEBUG
if (_env.Root != null && _env.FreeSpaceRoot != null)
{
Debug.Assert(_env.Root.State.RootPageNumber != _env.FreeSpaceRoot.State.RootPageNumber);
}
#endif
_env.NextPageNumber = NextPageNumber;
// Because we don't know in what order the OS will flush the pages
// we need to do this twice, once for the data, and then once for the metadata
var sortedPagesToFlush = _dirtyPages.Select(x => x.Value).Distinct().ToList();
sortedPagesToFlush.Sort();
_pager.Flush(sortedPagesToFlush);
if (_freeSpaceRepository != null)
{
_freeSpaceRepository.LastTransactionPageUsage(sortedPagesToFlush.Count);
}
WriteHeader(_pager.Get(this, _id & 1)); // this will cycle between the first and second pages
_pager.Flush(_id & 1); // and now we flush the metadata as well
_pager.Sync();
}