mirrors/limbo
1
0
Fork 0
mirror of https://github.com/tursodatabase/limbo.git synced 2025-08-04 01:58:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

fix some offset usages in btree

Browse source
This commit is contained in:
Pere Diaz Bou 2024-11-16 16:23:06 +01:00
parent fc5e42bb94
commit 66e20df309
1 changed files with 4 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

11
core/storage/btree.rs
View file

@ -648,7 +648,7 @@ impl BTreeCursor {
pointer_area_pc_by_idx + 2,
);
}
page.write_u16(pointer_area_pc_by_idx, pc);
page.write_u16(pointer_area_pc_by_idx - page.offset, pc);
// update first byte of content area
page.write_u16(BTREE_HEADER_OFFSET_CELL_CONTENT, pc);
@ -1128,17 +1128,13 @@ impl BTreeCursor {
if gap + 2 + amount > top {
// defragment
self.defragment_page(page_ref, RefCell::borrow(&self.database_header));
let buf = page_ref.as_ptr();
top = u16::from_be_bytes([buf[5], buf[6]]) as usize;
top = page_ref.read_u16(BTREE_HEADER_OFFSET_CELL_CONTENT) as usize;
}
let db_header = RefCell::borrow(&self.database_header);
top -= amount;
{
let buf = page_ref.as_ptr();
buf[5..7].copy_from_slice(&(top as u16).to_be_bytes());
}
page_ref.write_u16(BTREE_HEADER_OFFSET_CELL_CONTENT, top as u16);
let usable_space = (db_header.page_size - db_header.unused_space as u16) as usize;
assert!(top + amount <= usable_space);
@ -1358,6 +1354,7 @@ impl BTreeCursor {
let id = page.id as u32;
let contents = page.contents.as_mut().unwrap();
// TODO: take into account offset here?
let buf = contents.as_ptr();
let as_bytes = id.to_be_bytes();
// update pointer to new overflow page