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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
use crate::lock::{RwLockReadGuard, RwLockWriteGuard};
use crate::HashMap;
use core::hash::BuildHasher;
use core::hash::Hash;
use core::ops::{Deref, DerefMut};
use std::collections::hash_map::RandomState;
use std::sync::Arc;
// -- Shared
pub struct RefMulti<'a, K, V, S = RandomState> {
_guard: Arc<RwLockReadGuard<'a, HashMap<K, V, S>>>,
k: &'a K,
v: &'a V,
}
unsafe impl<'a, K: Eq + Hash + Send, V: Send, S: BuildHasher> Send for RefMulti<'a, K, V, S> {}
unsafe impl<'a, K: Eq + Hash + Send + Sync, V: Send + Sync, S: BuildHasher> Sync
for RefMulti<'a, K, V, S>
{
}
impl<'a, K: Eq + Hash, V, S: BuildHasher> RefMulti<'a, K, V, S> {
pub(crate) fn new(
guard: Arc<RwLockReadGuard<'a, HashMap<K, V, S>>>,
k: &'a K,
v: &'a V,
) -> Self {
Self {
_guard: guard,
k,
v,
}
}
pub fn key(&self) -> &K {
self.k
}
pub fn value(&self) -> &V {
self.v
}
pub fn pair(&self) -> (&K, &V) {
(self.k, self.v)
}
}
impl<'a, K: Eq + Hash, V, S: BuildHasher> Deref for RefMulti<'a, K, V, S> {
type Target = V;
fn deref(&self) -> &V {
self.value()
}
}
// --
// -- Unique
pub struct RefMutMulti<'a, K, V, S = RandomState> {
_guard: Arc<RwLockWriteGuard<'a, HashMap<K, V, S>>>,
k: &'a K,
v: &'a mut V,
}
unsafe impl<'a, K: Eq + Hash + Send, V: Send, S: BuildHasher> Send for RefMutMulti<'a, K, V, S> {}
unsafe impl<'a, K: Eq + Hash + Send + Sync, V: Send + Sync, S: BuildHasher> Sync
for RefMutMulti<'a, K, V, S>
{
}
impl<'a, K: Eq + Hash, V, S: BuildHasher> RefMutMulti<'a, K, V, S> {
pub(crate) fn new(
guard: Arc<RwLockWriteGuard<'a, HashMap<K, V, S>>>,
k: &'a K,
v: &'a mut V,
) -> Self {
Self {
_guard: guard,
k,
v,
}
}
pub fn key(&self) -> &K {
self.k
}
pub fn value(&self) -> &V {
self.v
}
pub fn value_mut(&mut self) -> &mut V {
self.v
}
pub fn pair(&self) -> (&K, &V) {
(self.k, self.v)
}
pub fn pair_mut(&mut self) -> (&K, &mut V) {
(self.k, self.v)
}
}
impl<'a, K: Eq + Hash, V, S: BuildHasher> Deref for RefMutMulti<'a, K, V, S> {
type Target = V;
fn deref(&self) -> &V {
self.value()
}
}
impl<'a, K: Eq + Hash, V, S: BuildHasher> DerefMut for RefMutMulti<'a, K, V, S> {
fn deref_mut(&mut self) -> &mut V {
self.value_mut()
}
}
// --
|
