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
121
#![deny(unsafe_code)]
#[cfg(not(feature = "loom"))]
mod loom {
pub use std::sync;
}
#[cfg(feature = "loom")]
use loom;
pub mod queue;
#[macro_export]
macro_rules! codegen {
(
pub struct $name:ident ( $item:ty );
fn into_nonzero = $into:expr;
fn from_nonzero = $from:expr;
) => {
pub struct $name {
queue: $crate::queue::WfQueue
}
#[cfg(not(feature = "loom"))]
paste::item! {
std::thread_local! {
static [<$name _ENQ_CTX>]: $crate::queue::EnqueueCtx = $crate::queue::EnqueueCtx::new();
static [<$name _DEQ_CTX>]: $crate::queue::DequeueCtx = $crate::queue::DequeueCtx::new();
}
}
#[cfg(feature = "loom")]
paste::item! {
loom::thread_local! {
static [<$name _ENQ_CTX>]: $crate::queue::EnqueueCtx = $crate::queue::EnqueueCtx::new();
static [<$name _DEQ_CTX>]: $crate::queue::DequeueCtx = $crate::queue::DequeueCtx::new();
}
}
impl $name {
#[inline]
pub fn new(cap: usize) -> $name {
$name {
queue: $crate::queue::WfQueue::new(cap)
}
}
#[inline]
pub fn len(&self) -> usize {
self.queue.len()
}
pub fn push(&self, input: $item) -> Result<(), $item> {
let input: std::num::NonZeroUsize = $into(input);
if paste::expr!{ &[<$name _ENQ_CTX>] }
.with(|ctx| self.queue.try_enqueue(ctx, input))
{
Ok(())
} else {
Err($from(input))
}
}
pub fn pop(&self) -> Option<$item> {
let output = paste::expr!{ &[<$name _DEQ_CTX>] }
.with(|ctx| self.queue.try_dequeue(ctx))?;
Some($from(output))
}
}
impl Drop for $name {
fn drop(&mut self) {
while self.pop().is_some() {}
}
}
}
}