blob: 1e6c5aa9255cf0831c76504f4a38cd265a01360c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use std::hash::Hasher;
/// A very fast insecure hasher that uses the xxHash algorithm.
#[derive(Default)]
pub struct FastInsecureHasher(twox_hash::XxHash64);
impl FastInsecureHasher {
pub fn new() -> Self {
Self::default()
}
pub fn write_str(&mut self, text: &str) -> &mut Self {
self.write(text.as_bytes());
self
}
pub fn write(&mut self, bytes: &[u8]) -> &mut Self {
self.0.write(bytes);
self
}
pub fn write_u8(&mut self, value: u8) -> &mut Self {
self.0.write_u8(value);
self
}
pub fn write_u64(&mut self, value: u64) -> &mut Self {
self.0.write_u64(value);
self
}
pub fn write_hashable(
&mut self,
hashable: &impl std::hash::Hash,
) -> &mut Self {
hashable.hash(&mut self.0);
self
}
pub fn finish(&self) -> u64 {
self.0.finish()
}
}
/// Disable write-ahead-logging and tweak some other stuff.
/// We want to favor startup time over cache performance and
/// creating a WAL is expensive on startup.
pub static INITIAL_PRAGMAS: &str = "
PRAGMA journal_mode=OFF;
PRAGMA synchronous=NORMAL;
PRAGMA temp_store=memory;
PRAGMA page_size=4096;
PRAGMA mmap_size=6000000;
PRAGMA optimize;
";
|
