Bennett Clement
9bb15c5788
Read raw bytes for index btree pages
2024-07-17 00:38:35 +08:00
Pekka Enberg
30ec86a81e
Add sorter utility functions and opcodes
...
This adds basic in-memory sorting utility functions, similar to SQLite's
src/vdbesort.c. We need to improve this later with external sorting so
to support large data sets.
This also adds sorting functionality to the VDBE. Note that none of this
is wired to SQL translation yet so it's unused for now.
2024-07-07 13:56:55 +03:00
Pekka Enberg
40e5d58cea
Fix RewindAwait branching when cursor is empty
...
Even if we have a page, the cursor can still be empty if there are no
records.
2024-05-07 06:46:03 -03:00
Pekka Enberg
9a73ded4fa
Add a Cursor trait and use it
...
We need an abstract cursor trait to implement a sorter, for example.
2024-03-28 15:01:52 +02:00
Pekka Enberg
ed9f3e6d1e
Single-threaded architecture
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Use Rc instead of Arc and replace the concurrent LRU with
single-threaded SIEVE.
Fixes #23
Fixes #29
2024-03-03 12:44:45 +02:00
Pekka Enberg
2c55cc797d
cargo clippy --fix
2024-01-28 10:21:38 +02:00
Pekka Enberg
225ee98769
cargo fmt
2024-01-28 09:58:04 +02:00
Pekka Enberg
505e28aaeb
Reduce memory allocations
...
Fixes #26
2024-01-28 09:57:12 +02:00
Pekka Enberg
2d625f34c5
core: Optimize Cursor::next()
2024-01-27 09:32:26 +02:00
Pekka Enberg
ae2f403838
core: Fix step() return path when page is under I/O
2024-01-12 17:35:55 +02:00
Pekka Enberg
a39f5c68b4
core: Populate page contents lazily
...
We need to be able to allocate a new page and insert it into a page
cache without contents for asynchronoous I/O. Let's do that by making
`contents` optional in Page. (We perhaps ought to rename it to
`inner`...)
2024-01-12 16:38:11 +02:00
Pekka Enberg
c28544530e
Prepare for asynchronous I/O with page flags
...
We want to submit I/O asynchronously with io_uring, which means we can
have multiple concurrent lookups to the page that is under I/O.
Therefore, let's add three page flags: up-to-date, locked, and error, so
that the higher level layers can just look up a page, but wait if
there's I/O happening.
2023-11-18 12:19:44 +02:00
Pekka Enberg
20eba95383
Fix get_next_record() for all pages with right-most pointer
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The right-most pointer is always kept separate from the cells in an
interior page so let's traverse it in all cases.
2023-10-18 17:54:20 +03:00
Pekka Enberg
0e9cc6b21f
Fix full table scans
...
A full table scan missed some of the last rows because we don't consider
sibling pages when there is no parent.
2023-10-17 16:53:24 +03:00
Pekka Enberg
a2202ed31e
Implement reading primary key columns
2023-09-10 13:19:17 +03:00
Pekka Enberg
4a5c71ab7a
I/O interface refactoring
2023-09-09 10:22:26 +03:00
Pekka Enberg
0a942f0fd0
Implement full table scan
2023-09-07 21:59:33 +03:00
Pekka Enberg
7c894f3b70
Parse BTree table interior cells
2023-09-04 21:59:00 +03:00
Pekka Enberg
9d2e7c89d7
Page cache
2023-09-02 19:32:49 +03:00
Pekka Enberg
ae709f04fe
Make some opcodes wait for completion
2023-09-02 13:26:44 +03:00
Pekka Enberg
3ec9c0be7c
Implement ResultRow opcode
2023-09-02 11:40:11 +03:00
Pekka Enberg
b25f8c4daf
Implement Cursor::next()
2023-08-31 21:45:04 +03:00
Pekka Enberg
05621e3286
Cursors
2023-08-30 20:26:15 +03:00
Pekka Enberg
b572d60dc5
B-Tree interface
2023-08-29 20:33:16 +03:00
