internal TreePage NewPage(TreePageFlags flags, int num)
{
var page = AllocateNewPage(_llt, flags, num);
State.RecordNewPage(page, num);
PageModified?.Invoke(page.PageNumber);
return(page);
}
private static TreePage AllocateNewPage(LowLevelTransaction tx, TreePageFlags flags, int num, long?pageNumber = null)
{
var page = tx.AllocatePage(num, pageNumber).ToTreePage();
page.Flags = PageFlags.VariableSizeTreePage | (num == 1 ? PageFlags.Single : PageFlags.Overflow);
page.Lower = (ushort)Constants.TreePageHeaderSize;
page.TreeFlags = flags;
page.Upper = (ushort)page.PageSize;
page.Dirty = true;
return(page);
}
internal TreePage NewPage(TreePageFlags flags, long nearbyPage)
{
var newPage = _newPageAllocator?.AllocateSinglePage(nearbyPage) ?? _llt.AllocatePage(1);
var page = PrepareTreePage(flags, 1, newPage);
State.RecordNewPage(page, 1);
PageModified?.Invoke(page.PageNumber, page.Flags);
return(page);
}
private static TreePage PrepareTreePage(TreePageFlags flags, int num, Page newPage)
{
var page = new TreePage(newPage.Pointer, Constants.Storage.PageSize)
{
Flags = PageFlags.VariableSizeTreePage | (num == 1 ? PageFlags.Single : PageFlags.Overflow),
Lower = Constants.Tree.PageHeaderSize,
TreeFlags = flags,
Upper = Constants.Storage.PageSize,
Dirty = true
};
return(page);
}
private static TreePage AllocateNewPage(LowLevelTransaction tx, TreePageFlags flags, int num, long?pageNumber = null)
{
var newPage = tx.AllocatePage(num, pageNumber);
var page = new TreePage(newPage.Pointer, tx.PageSize)
{
Flags = PageFlags.VariableSizeTreePage | (num == 1 ? PageFlags.Single : PageFlags.Overflow),
Lower = (ushort)Constants.Tree.PageHeaderSize,
TreeFlags = flags,
Upper = (ushort)tx.PageSize,
Dirty = true
};
return(page);
}
