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examples/lock fixed

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Per Lindgren 2023-01-07 14:23:32 +01:00 committed by Henrik Tjäder
parent bd20d0d89e
commit b054e871d4
2 changed files with 11 additions and 9 deletions
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9
examples/lock-free.rs → examples/lock-free.no_rs
View file

@ -4,6 +4,7 @@
#![deny(warnings)] #![deny(warnings)]
#![no_main] #![no_main]
#![no_std] #![no_std]
#![feature(type_alias_impl_trait)]
use panic_semihosting as _; use panic_semihosting as _;
@ -21,14 +22,14 @@ mod app {
struct Local {} struct Local {}
#[init] #[init]
fn init(_: init::Context) -> (Shared, Local, init::Monotonics) { fn init(_: init::Context) -> (Shared, Local) {
foo::spawn().unwrap(); foo::spawn().unwrap();
(Shared { counter: 0 }, Local {}, init::Monotonics()) (Shared { counter: 0 }, Local {})
} }
#[task(shared = [counter])] // <- same priority #[task(shared = [counter])] // <- same priority
fn foo(c: foo::Context) { async fn foo(c: foo::Context) {
bar::spawn().unwrap(); bar::spawn().unwrap();
*c.shared.counter += 1; // <- no lock API required *c.shared.counter += 1; // <- no lock API required
@ -37,7 +38,7 @@ mod app {
} }
#[task(shared = [counter])] // <- same priority #[task(shared = [counter])] // <- same priority
fn bar(c: bar::Context) { async fn bar(c: bar::Context) {
foo::spawn().unwrap(); foo::spawn().unwrap();
*c.shared.counter += 1; // <- no lock API required *c.shared.counter += 1; // <- no lock API required

11
examples/lock.rs
View file

@ -4,6 +4,7 @@
#![deny(warnings)] #![deny(warnings)]
#![no_main] #![no_main]
#![no_std] #![no_std]
#![feature(type_alias_impl_trait)]
use panic_semihosting as _; use panic_semihosting as _;
@ -20,15 +21,15 @@ mod app {
struct Local {} struct Local {}
#[init] #[init]
fn init(_: init::Context) -> (Shared, Local, init::Monotonics) { fn init(_: init::Context) -> (Shared, Local) {
foo::spawn().unwrap(); foo::spawn().unwrap();
(Shared { shared: 0 }, Local {}, init::Monotonics()) (Shared { shared: 0 }, Local {})
} }
// when omitted priority is assumed to be `1` // when omitted priority is assumed to be `1`
#[task(shared = [shared])] #[task(shared = [shared])]
fn foo(mut c: foo::Context) { async fn foo(mut c: foo::Context) {
hprintln!("A").unwrap(); hprintln!("A").unwrap();
// the lower priority task requires a critical section to access the data // the lower priority task requires a critical section to access the data
@ -53,7 +54,7 @@ mod app {
} }
#[task(priority = 2, shared = [shared])] #[task(priority = 2, shared = [shared])]
fn bar(mut c: bar::Context) { async fn bar(mut c: bar::Context) {
// the higher priority task does still need a critical section // the higher priority task does still need a critical section
let shared = c.shared.shared.lock(|shared| { let shared = c.shared.shared.lock(|shared| {
*shared += 1; *shared += 1;
@ -65,7 +66,7 @@ mod app {
} }
#[task(priority = 3)] #[task(priority = 3)]
fn baz(_: baz::Context) { async fn baz(_: baz::Context) {
hprintln!("C").unwrap(); hprintln!("C").unwrap();
} }
} }