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095bf494f39fb17f36c94de84c21112957503d6d
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168 Commits

Author SHA1 Message Date
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
5ebf51ae5a Add tracing to prepare() and query() 2024-05-07 06:38:13 -03:00
Pekka Enberg
a447ea0f49 Dynamic cursor ID allocation 
With sorter, for example, we need more cursors per program.
 2024-03-29 09:26:18 +02:00
Pekka Enberg
454b1047ce Simplify translate_select() 2024-03-29 09:22:02 +02:00
Pekka Enberg
a9eb6918d3 SELECT expression support 2024-03-28 19:41:21 +02:00
Pekka Enberg
3f17ac0e17 Simplify code 2024-03-28 19:32:38 +02:00
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
1dd33bedcd Remove commented out code 2024-03-28 14:33:59 +02:00
Pekka Enberg
88f335db16 Fix SQL identifiers to be case insensitive 
SQLite seems to treat everything as case insensitive so let's do that
too.

Fixes #37
 2024-03-27 21:00:47 +02:00
Pekka Enberg
81f003d29f Extract create_table() function 2024-03-27 20:44:52 +02:00
Pekka Enberg
ed9f3e6d1e Single-threaded architecture 
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
59822e2c6f core: Don't depend on pprof on Windows 2024-03-03 11:49:55 +02:00
Pekka Enberg
84a5115d77 core: Add Windows I/O module 
It's a copy of the synchronous I/O module that we use on Darwin. In the
future, let's switch to Windows IOCP API.
 2024-03-03 11:34:53 +02:00
Pekka Enberg
e0dc9dc86d Optimize trace_insn() 2024-01-28 13:14:39 +02:00
Pekka Enberg
3d1d4e5355 core: Make OwnedValue cloning cheaper 2024-01-28 12:56:34 +02:00
Pekka Enberg
07912ee139 Use OwnedRecord::new() 2024-01-28 10:22:22 +02:00
Pekka Enberg
2c55cc797d cargo clippy --fix 2024-01-28 10:21:38 +02:00
Pekka Enberg
9f733b5a73 Simplify Statement::step() 2024-01-28 10:20:45 +02:00
Pekka Enberg
64213766a2 Remove redundant lifetime parameter from Statement::step() 2024-01-28 10:19:31 +02:00
Pekka Enberg
d5bceaefdb Remove redundant loop from Statement::step() 2024-01-28 10:18:59 +02:00
Pekka Enberg
bb3cc32d6d Use RefCell instead of Mutex for DatabaseHeader 2024-01-28 10:17:23 +02:00
Pekka Enberg
f2cd403944 core: Replace Mutex with RefCell in BufferPool 2024-01-28 10:13:03 +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
af258a4958 core: Disable invalid UTF-8 sequence test case 
We disabled UTF-8 validation in read_value() in
bb56ba0736 so let's fix the test case to
reflect that.
 2024-01-27 10:16:59 +02:00
Pekka Enberg
3e6bf6892a core: Switch to Rc in Value::Text 
Makes deallocation much faster...
 2024-01-27 10:09:35 +02:00
Pekka Enberg
0b3db02451 core: Make Value::Text reference counted 
Avoids lots of memory copies as values get passed through the different
layers.
 2024-01-27 09:48:02 +02:00
Pekka Enberg
bb56ba0736 core: Skip UTF-8 validation in read_value() 
The UTF-8 validation is very expensive. It's unclear if we ever need to
do it at read time and if we do, let's do it when we know the value is
actually going to be used. Speeds up read_value() a lot.
 2024-01-27 09:46:20 +02:00
Pekka Enberg
2d625f34c5 core: Optimize Cursor::next() 2024-01-27 09:32:26 +02:00
Pekka Enberg
a06225d4ff Fix broken test case 2024-01-26 17:27:31 +02:00
Pekka Enberg
426b2d568b Revert "core: Optimize read_value() for strings" 
This reverts commit 7c05149bcf.
 2024-01-24 19:14:20 +02:00
Pekka Enberg
fe82aa569f core: Optimize read_record() 2024-01-24 17:56:09 +02:00
Pekka Enberg
274c8109d6 core: Optimize read_record() 
The serial type varints are typically just a single byte, so let's
allocate at least header size bytes in the vector to reduce need to grow
it.
 2024-01-24 17:56:09 +02:00
Pekka Enberg
4804c2a686 core: Optimize finish_read_btree_page() 2024-01-24 17:56:09 +02:00
Pekka Enberg
7c05149bcf core: Optimize read_value() for strings 2024-01-24 17:56:09 +02:00
Pekka Enberg
490c3b2dda core: Optimize read_varint() 2024-01-24 17:56:09 +02:00
Pekka Enberg
8c2926e4d1 core/linux: Make io_uring larger 2024-01-24 17:25:33 +02:00
Pekka Enberg
d2a925698d core/linux: Don't block in run_once() 2024-01-24 17:25:19 +02:00
Pekka Enberg
0b9b6cfd29 Asynchronous I/O 2024-01-24 08:14:53 +02:00
Pekka Enberg
2bb56ade4b Tracing improvements 2024-01-14 15:47:54 +02:00
Pekka Enberg
725eed964b Tracing improvements 2024-01-14 15:36:59 +02:00
Pekka Enberg
44dcd48071 Fix WebAssembly build 2024-01-14 15:29:27 +02:00
Pekka Enberg
9af2a285b1 Fix build on Darwin 2024-01-13 09:14:26 +02:00
Pekka Enberg
08b40f2af7 core/linux: Move I/O completion to io_uring 
Move the Completion::complete() call to the io_uring machinery. We still
essentially do synchronous I/O because of the call to submit_and_wait()
in pread(), but let's take one step at a time...
 2024-01-13 09:11:35 +02:00
Pekka Enberg
5ea214083a core: Switch to using Arc<Completion> 
We need to be able to leak a reference for io_uring so switch to
Arc<Completion> in the code.
 2024-01-13 09:03:21 +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
e5798838a0 core: Split page reading into I/O and parsing 
In preparation for actually making page reads async, split page reading
into two parts: I/O submission with `begin_read_btree_page()` and
parsing with `finish_read_btree_page()`. Also wire up completion to
perform the read parsing.

Next step is to move the Completion.complete() call somewhere in the I/O
layer and make sure we return from the VM correctly if page is under
I/O.
 2024-01-12 17:23:46 +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
93670b0505 core: Add Completion.complete() helper 2024-01-12 15:51:10 +02:00
Pekka Enberg
2724b0f411 Simplify Buffer and Completion 
Eliminate the explicit lifetime parameter from Buffer to simplify the code.
 2024-01-05 16:32:21 +02:00