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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
use proc_macro2::TokenStream as TokenStream2;
use quote::quote;
use rtic_syntax::{analyze::Ownership, ast::App};
use crate::{analyze::Analysis, check::Extra, codegen::util};
/// Generates `static` variables and shared resource proxies
pub fn codegen(
app: &App,
analysis: &Analysis,
extra: &Extra,
) -> (
// mod_app -- the `static` variables behind the proxies
Vec<TokenStream2>,
// mod_resources -- the `resources` module
TokenStream2,
) {
let mut mod_app = vec![];
let mut mod_resources = vec![];
for (name, res) in &app.shared_resources {
let cfgs = &res.cfgs;
let ty = &res.ty;
let mangled_name = &util::static_shared_resource_ident(name);
// late resources in `util::link_section_uninit`
let section = util::link_section_uninit();
let attrs = &res.attrs;
// For future use
// let doc = format!(" RTIC internal: {}:{}", file!(), line!());
mod_app.push(quote!(
#[allow(non_camel_case_types)]
#[allow(non_upper_case_globals)]
// #[doc = #doc]
#[doc(hidden)]
#(#attrs)*
#(#cfgs)*
#section
static #mangled_name: rtic::RacyCell<core::mem::MaybeUninit<#ty>> = rtic::RacyCell::new(core::mem::MaybeUninit::uninit());
));
// For future use
// let doc = format!(" RTIC internal: {}:{}", file!(), line!());
let shared_name = util::need_to_lock_ident(name);
if !res.properties.lock_free {
mod_resources.push(quote!(
// #[doc = #doc]
#[doc(hidden)]
#[allow(non_camel_case_types)]
#(#cfgs)*
pub struct #shared_name<'a> {
priority: &'a Priority,
}
#(#cfgs)*
impl<'a> #shared_name<'a> {
#[inline(always)]
pub unsafe fn new(priority: &'a Priority) -> Self {
#shared_name { priority }
}
#[inline(always)]
pub unsafe fn priority(&self) -> &Priority {
self.priority
}
}
));
let ptr = quote!(
#(#cfgs)*
#mangled_name.get_mut() as *mut _
);
let ceiling = match analysis.ownerships.get(name) {
Some(Ownership::Owned { priority } | Ownership::CoOwned { priority }) => *priority,
Some(Ownership::Contended { ceiling }) => *ceiling,
None => 0,
};
// For future use
// let doc = format!(" RTIC internal ({} resource): {}:{}", doc, file!(), line!());
mod_app.push(util::impl_mutex(
extra,
cfgs,
true,
&shared_name,
"e!(#ty),
ceiling,
&ptr,
));
}
}
let mod_resources = if mod_resources.is_empty() {
quote!()
} else {
quote!(mod shared_resources {
use rtic::export::Priority;
#(#mod_resources)*
})
};
// Computing mapping of used interrupts to masks
let interrupt_ids = analysis.interrupts.iter().map(|(p, (id, _))| (p, id));
use std::collections::HashMap;
let mut masks: HashMap<u8, _> = std::collections::HashMap::new();
let device = &extra.device;
for p in 0..3 {
masks.insert(p, quote!(0));
}
for (&priority, name) in interrupt_ids.chain(app.hardware_tasks.values().flat_map(|task| {
if !util::is_exception(&task.args.binds) {
Some((&task.args.priority, &task.args.binds))
} else {
// TODO: exceptions not implemented
None
}
})) {
let name = quote!(#device::Interrupt::#name as u32);
if let Some(v) = masks.get_mut(&(priority - 1)) {
*v = quote!(#v | 1 << #name);
};
}
let mut mask_arr: Vec<(_, _)> = masks.iter().collect();
mask_arr.sort_by_key(|(k, _v)| *k);
let mask_arr: Vec<_> = mask_arr.iter().map(|(_, v)| v).collect();
mod_app.push(quote!(
const MASKS: [u32; 3] = [#(#mask_arr),*];
));
(mod_app, mod_resources)
}
|
