1 files changed, 77 insertions, 0 deletions
diff --git a/examples/multilock.rs b/examples/multilock.rs
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+++ b/examples/multilock.rs
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+//! examples/mutlilock.rs
+//!
+//! The multi-lock feature example.
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+use panic_semihosting as _;
+
+#[rtic::app(device = lm3s6965, dispatchers = [GPIOA])]
+mod app {
+    use cortex_m_semihosting::{debug, hprintln};
+
+    #[resources]
+    struct Resources {
+        #[init(0)]
+        shared1: u32,
+        #[init(0)]
+        shared2: u32,
+        #[init(0)]
+        shared3: u32,
+    }
+
+    #[init]
+    fn init(_: init::Context) -> init::LateResources {
+        locks::spawn().ok();
+
+        init::LateResources {}
+    }
+
+    // when omitted priority is assumed to be `1`
+    #[task(resources = [shared1, shared2, shared3])]
+    fn locks(c: locks::Context) {
+        let mut s1 = c.resources.shared1;
+        let mut s2 = c.resources.shared2;
+        let mut s3 = c.resources.shared3;
+
+        hprintln!("Multiple single locks").unwrap();
+        s1.lock(|s1| {
+            s2.lock(|s2| {
+                s3.lock(|s3| {
+                    *s1 += 1;
+                    *s2 += 1;
+                    *s3 += 1;
+
+                    hprintln!(
+                        "Multiple single locks, s1: {}, s2: {}, s3: {}",
+                        *s1,
+                        *s2,
+                        *s3
+                    )
+                    .unwrap();
+                })
+            })
+        });
+
+        hprintln!("Multilock!").unwrap();
+
+        (s1, s2, s3).lock(|s1, s2, s3| {
+            *s1 += 1;
+            *s2 += 1;
+            *s3 += 1;
+
+            hprintln!(
+                "Multiple single locks, s1: {}, s2: {}, s3: {}",
+                *s1,
+                *s2,
+                *s3
+            )
+            .unwrap();
+        });
+
+        debug::exit(debug::EXIT_SUCCESS);
+    }
+}