mirror/rtic
1
0
Fork 0
mirror of https://github.com/rtic-rs/rtic.git synced 2025-12-19 06:15:45 +01:00
Code Issues Projects Releases Packages Wiki Activity

impl Mutex on all shared resources

Browse source 
document how to write generic code that operates on resources
This commit is contained in:
Jorge Aparicio 2018-11-04 18:50:42 +01:00
parent 16d473a9b6
commit 37a0692a0f
11 changed files with 322 additions and 104 deletions
Download patch file Download diff file Expand all files Collapse all files

34
macros/src/analyze.rs
View file

@ -30,13 +30,14 @@ pub struct Analysis {
pub enum Ownership {
// NOTE priorities and ceilings are "logical" (0 = lowest priority, 255 = highest priority)
Owned { priority: u8 },
CoOwned { priority: u8 },
Shared { ceiling: u8 },
}
impl Ownership {
pub fn needs_lock(&self, priority: u8) -> bool {
match *self {
Ownership::Owned { .. } => false,
Ownership::Owned { .. } | Ownership::CoOwned { .. } => false,
Ownership::Shared { ceiling } => {
debug_assert!(ceiling >= priority);
@ -44,6 +45,13 @@ impl Ownership {
}
}
}
pub fn is_owned(&self) -> bool {
match *self {
Ownership::Owned { .. } => true,
_ => false,
}
}
}
pub struct Dispatcher {
@ -72,18 +80,24 @@ pub fn app(app: &App) -> Analysis {
for (priority, res) in app.resource_accesses() {
if let Some(ownership) = ownerships.get_mut(res) {
match *ownership {
Ownership::Owned { priority: ceiling } | Ownership::Shared { ceiling } => {
if priority != ceiling {
*ownership = Ownership::Shared {
ceiling: cmp::max(ceiling, priority),
};
Ownership::Owned { priority: ceiling }
| Ownership::CoOwned { priority: ceiling }
| Ownership::Shared { ceiling }
if priority != ceiling =>
{
*ownership = Ownership::Shared {
ceiling: cmp::max(ceiling, priority),
};
let res = &app.resources[res];
if res.mutability.is_none() {
assert_sync.insert(res.ty.clone());
}
let res = &app.resources[res];
if res.mutability.is_none() {
assert_sync.insert(res.ty.clone());
}
}
Ownership::Owned { priority: ceiling } if ceiling == priority => {
*ownership = Ownership::CoOwned { priority };
}
_ => {}
}
continue;