update examples

23 files changed, 159 insertions, 235 deletions

diff --git a/examples/baseline.rs b/examples/baseline.rs
index fdf36838..d743107d 100644
--- a/examples/baseline.rs
+++ b/examples/baseline.rs
@@ -9,24 +9,23 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
 // NOTE: does NOT properly work on QEMU
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init(spawn = [foo])]
-    fn init() {
-        hprintln!("init(baseline = {:?})", start).unwrap();
+    fn init(c: init::Context) {
+        hprintln!("init(baseline = {:?})", c.start).unwrap();
 
         // `foo` inherits the baseline of `init`: `Instant(0)`
-        spawn.foo().unwrap();
+        c.spawn.foo().unwrap();
     }
 
     #[task(schedule = [foo])]
-    fn foo() {
+    fn foo(c: foo::Context) {
         static mut ONCE: bool = true;
 
-        hprintln!("foo(baseline = {:?})", scheduled).unwrap();
+        hprintln!("foo(baseline = {:?})", c.scheduled).unwrap();
 
         if *ONCE {
             *ONCE = false;
@@ -38,11 +37,11 @@ const APP: () = {
     }
 
     #[interrupt(spawn = [foo])]
-    fn UART0() {
-        hprintln!("UART0(baseline = {:?})", start).unwrap();
+    fn UART0(c: UART0::Context) {
+        hprintln!("UART0(baseline = {:?})", c.start).unwrap();
 
         // `foo` inherits the baseline of `UART0`: its `start` time
-        spawn.foo().unwrap();
+        c.spawn.foo().unwrap();
     }
 
     extern "C" {
diff --git a/examples/binds.rs b/examples/binds.rs
index a8b386fb..3d2d9b54 100644
--- a/examples/binds.rs
+++ b/examples/binds.rs
@@ -9,20 +9,19 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
 // `examples/interrupt.rs` rewritten to use `binds`
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         rtfm::pend(Interrupt::UART0);
 
         hprintln!("init").unwrap();
     }
 
     #[idle]
-    fn idle() -> ! {
+    fn idle(_: idle::Context) -> ! {
         hprintln!("idle").unwrap();
 
         rtfm::pend(Interrupt::UART0);
@@ -33,7 +32,7 @@ const APP: () = {
     }
 
     #[interrupt(binds = UART0)]
-    fn foo() {
+    fn foo(_: foo::Context) {
         static mut TIMES: u32 = 0;
 
         *TIMES += 1;
diff --git a/examples/capacity.rs b/examples/capacity.rs
index a7132ba0..07edd9b8 100644
--- a/examples/capacity.rs
+++ b/examples/capacity.rs
@@ -9,32 +9,31 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         rtfm::pend(Interrupt::UART0);
     }
 
     #[interrupt(spawn = [foo, bar])]
-    fn UART0() {
-        spawn.foo(0).unwrap();
-        spawn.foo(1).unwrap();
-        spawn.foo(2).unwrap();
-        spawn.foo(3).unwrap();
+    fn UART0(c: UART0::Context) {
+        c.spawn.foo(0).unwrap();
+        c.spawn.foo(1).unwrap();
+        c.spawn.foo(2).unwrap();
+        c.spawn.foo(3).unwrap();
 
-        spawn.bar().unwrap();
+        c.spawn.bar().unwrap();
     }
 
     #[task(capacity = 4)]
-    fn foo(x: u32) {
+    fn foo(_: foo::Context, x: u32) {
         hprintln!("foo({})", x).unwrap();
     }
 
     #[task]
-    fn bar() {
+    fn bar(_: bar::Context) {
         hprintln!("bar").unwrap();
 
         debug::exit(debug::EXIT_SUCCESS);
diff --git a/examples/cfg.rs b/examples/cfg.rs
index 3f4ca904..03f9dbdc 100644
--- a/examples/cfg.rs
+++ b/examples/cfg.rs
@@ -9,25 +9,24 @@ extern crate panic_semihosting;
 
 #[cfg(debug_assertions)]
 use cortex_m_semihosting::hprintln;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[cfg(debug_assertions)] // <- `true` when using the `dev` profile
     static mut COUNT: u32 = 0;
 
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         // ..
     }
 
     #[task(priority = 3, resources = [COUNT], spawn = [log])]
-    fn foo() {
+    fn foo(c: foo::Context) {
         #[cfg(debug_assertions)]
         {
-            *resources.COUNT += 1;
+            *c.resources.COUNT += 1;
 
-            spawn.log(*resources.COUNT).ok();
+            c.spawn.log(*c.resources.COUNT).ok();
         }
 
         // this wouldn't compile in `release` mode
@@ -38,7 +37,7 @@ const APP: () = {
 
     #[cfg(debug_assertions)]
     #[task]
-    fn log(n: u32) {
+    fn log(_: log::Context, n: u32) {
         hprintln!(
             "foo has been called {} time{}",
             n,
diff --git a/examples/generics.rs b/examples/generics.rs
index c8ce8393..e624da39 100644
--- a/examples/generics.rs
+++ b/examples/generics.rs
@@ -9,25 +9,25 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::{app, Mutex};
+use rtfm::Mutex;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     static mut SHARED: u32 = 0;
 
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         rtfm::pend(Interrupt::UART0);
         rtfm::pend(Interrupt::UART1);
     }
 
     #[interrupt(resources = [SHARED])]
-    fn UART0() {
+    fn UART0(c: UART0::Context) {
         static mut STATE: u32 = 0;
 
         hprintln!("UART0(STATE = {})", *STATE).unwrap();
 
-        advance(STATE, resources.SHARED);
+        advance(STATE, c.resources.SHARED);
 
         rtfm::pend(Interrupt::UART1);
 
@@ -35,17 +35,17 @@ const APP: () = {
     }
 
     #[interrupt(priority = 2, resources = [SHARED])]
-    fn UART1() {
+    fn UART1(mut c: UART1::Context) {
         static mut STATE: u32 = 0;
 
         hprintln!("UART1(STATE = {})", *STATE).unwrap();
 
         // just to show that `SHARED` can be accessed directly and ..
-        *resources.SHARED += 0;
+        *c.resources.SHARED += 0;
         // .. also through a (no-op) `lock`
-        resources.SHARED.lock(|shared| *shared += 0);
+        c.resources.SHARED.lock(|shared| *shared += 0);
 
-        advance(STATE, resources.SHARED);
+        advance(STATE, c.resources.SHARED);
     }
 };
 
diff --git a/examples/idle.rs b/examples/idle.rs
index 1f21a37f..d10cc43e 100644
--- a/examples/idle.rs
+++ b/examples/idle.rs
@@ -8,17 +8,16 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         hprintln!("init").unwrap();
     }
 
     #[idle]
-    fn idle() -> ! {
+    fn idle(_: idle::Context) -> ! {
         static mut X: u32 = 0;
 
         // Safe access to local `static mut` variable
diff --git a/examples/init.rs b/examples/init.rs
index be6cfe3e..df687794 100644
--- a/examples/init.rs
+++ b/examples/init.rs
@@ -8,19 +8,18 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init]
-    fn init() {
+    fn init(c: init::Context) {
         static mut X: u32 = 0;
 
         // Cortex-M peripherals
-        let _core: rtfm::Peripherals = core;
+        let _core: rtfm::Peripherals = c.core;
 
         // Device specific peripherals
-        let _device: lm3s6965::Peripherals = device;
+        let _device: lm3s6965::Peripherals = c.device;
 
         // Safe access to local `static mut` variable
         let _x: &'static mut u32 = X;
diff --git a/examples/interrupt.rs b/examples/interrupt.rs
index 3c669d9e..dd6efa0d 100644
--- a/examples/interrupt.rs
+++ b/examples/interrupt.rs
@@ -9,12 +9,11 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         // Pends the UART0 interrupt but its handler won't run until *after*
         // `init` returns because interrupts are disabled
         rtfm::pend(Interrupt::UART0);
@@ -23,7 +22,7 @@ const APP: () = {
     }
 
     #[idle]
-    fn idle() -> ! {
+    fn idle(_: idle::Context) -> ! {
         // interrupts are enabled again; the `UART0` handler runs at this point
 
         hprintln!("idle").unwrap();
@@ -36,7 +35,7 @@ const APP: () = {
     }
 
     #[interrupt]
-    fn UART0() {
+    fn UART0(_: UART0::Context) {
         static mut TIMES: u32 = 0;
 
         // Safe access to local `static mut` variable
diff --git a/examples/late.rs b/examples/late.rs
index 622008a7..0074fb32 100644
--- a/examples/late.rs
+++ b/examples/late.rs
@@ -13,16 +13,15 @@ use heapless::{
     spsc::{Consumer, Producer, Queue},
 };
 use lm3s6965::Interrupt;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     // Late resources
     static mut P: Producer<'static, u32, U4> = ();
     static mut C: Consumer<'static, u32, U4> = ();
 
     #[init]
-    fn init() -> init::LateResources {
+    fn init(_: init::Context) -> init::LateResources {
         // NOTE: we use `Option` here to work around the lack of
         // a stable `const` constructor
         static mut Q: Option<Queue<u32, U4>> = None;
@@ -35,9 +34,9 @@ const APP: () = {
     }
 
     #[idle(resources = [C])]
-    fn idle() -> ! {
+    fn idle(c: idle::Context) -> ! {
         loop {
-            if let Some(byte) = resources.C.dequeue() {
+            if let Some(byte) = c.resources.C.dequeue() {
                 hprintln!("received message: {}", byte).unwrap();
 
                 debug::exit(debug::EXIT_SUCCESS);
@@ -48,7 +47,7 @@ const APP: () = {
     }
 
     #[interrupt(resources = [P])]
-    fn UART0() {
-        resources.P.enqueue(42).unwrap();
+    fn UART0(c: UART0::Context) {
+        c.resources.P.enqueue(42).unwrap();
     }
 };
diff --git a/examples/lock.rs b/examples/lock.rs
index 4ca862e3..814c7364 100644
--- a/examples/lock.rs
+++ b/examples/lock.rs
@@ -9,24 +9,23 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     static mut SHARED: u32 = 0;
 
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         rtfm::pend(Interrupt::GPIOA);
     }
 
     // when omitted priority is assumed to be `1`
     #[interrupt(resources = [SHARED])]
-    fn GPIOA() {
+    fn GPIOA(mut c: GPIOA::Context) {
         hprintln!("A").unwrap();
 
         // the lower priority task requires a critical section to access the data
-        resources.SHARED.lock(|shared| {
+        c.resources.SHARED.lock(|shared| {
             // data can only be modified within this critical section (closure)
             *shared += 1;
 
@@ -47,15 +46,15 @@ const APP: () = {
     }
 
     #[interrupt(priority = 2, resources = [SHARED])]
-    fn GPIOB() {
+    fn GPIOB(mut c: GPIOB::Context) {
         // the higher priority task does *not* need a critical section
-        *resources.SHARED += 1;
+        *c.resources.SHARED += 1;
 
-        hprintln!("D - SHARED = {}", *resources.SHARED).unwrap();
+        hprintln!("D - SHARED = {}", *c.resources.SHARED).unwrap();
     }
 
     #[interrupt(priority = 3)]
-    fn GPIOC() {
+    fn GPIOC(_: GPIOC::Context) {
         hprintln!("C").unwrap();
     }
 };
diff --git a/examples/message.rs b/examples/message.rs
index b5d68a60..1fd3b9d4 100644
--- a/examples/message.rs
+++ b/examples/message.rs
@@ -8,41 +8,40 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init(spawn = [foo])]
-    fn init() {
-        spawn.foo(/* no message */).unwrap();
+    fn init(c: init::Context) {
+        c.spawn.foo(/* no message */).unwrap();
     }
 
     #[task(spawn = [bar])]
-    fn foo() {
+    fn foo(c: foo::Context) {
         static mut COUNT: u32 = 0;
 
         hprintln!("foo").unwrap();
 
-        spawn.bar(*COUNT).unwrap();
+        c.spawn.bar(*COUNT).unwrap();
         *COUNT += 1;
     }
 
     #[task(spawn = [baz])]
-    fn bar(x: u32) {
+    fn bar(c: bar::Context, x: u32) {
         hprintln!("bar({})", x).unwrap();
 
-        spawn.baz(x + 1, x + 2).unwrap();
+        c.spawn.baz(x + 1, x + 2).unwrap();
     }
 
     #[task(spawn = [foo])]
-    fn baz(x: u32, y: u32) {
+    fn baz(c: baz::Context, x: u32, y: u32) {
         hprintln!("baz({}, {})", x, y).unwrap();
 
         if x + y > 4 {
             debug::exit(debug::EXIT_SUCCESS);
         }
 
-        spawn.foo().unwrap();
+        c.spawn.foo().unwrap();
     }
 
     extern "C" {
diff --git a/examples/not-send.rs b/examples/not-send.rs
index be78c332..c1b6bcdd 100644
--- a/examples/not-send.rs
+++ b/examples/not-send.rs
@@ -21,32 +21,32 @@ const APP: () = {
     static mut SHARED: Option<NotSend> = None;
 
     #[init(spawn = [baz, quux])]
-    fn init() {
-        spawn.baz().unwrap();
-        spawn.quux().unwrap();
+    fn init(c: init::Context) {
+        c.spawn.baz().unwrap();
+        c.spawn.quux().unwrap();
     }
 
     #[task(spawn = [bar])]
-    fn foo() {
+    fn foo(c: foo::Context) {
         // scenario 1: message passed to task that runs at the same priority
-        spawn.bar(NotSend { _0: PhantomData }).ok();
+        c.spawn.bar(NotSend { _0: PhantomData }).ok();
     }
 
     #[task]
-    fn bar(_x: NotSend) {
+    fn bar(_: bar::Context, _x: NotSend) {
         // scenario 1
     }
 
     #[task(priority = 2, resources = [SHARED])]
-    fn baz() {
+    fn baz(mut c: baz::Context) {
         // scenario 2: resource shared between tasks that run at the same priority
-        *resources.SHARED = Some(NotSend { _0: PhantomData });
+        *c.resources.SHARED = Some(NotSend { _0: PhantomData });
     }
 
     #[task(priority = 2, resources = [SHARED])]
-    fn quux() {
+    fn quux(mut c: quux::Context) {
         // scenario 2
-        let _not_send = resources.SHARED.take().unwrap();
+        let _not_send = c.resources.SHARED.take().unwrap();
 
         debug::exit(debug::EXIT_SUCCESS);
     }
diff --git a/examples/not-sync.rs b/examples/not-sync.rs
index d94e0a04..bc714065 100644
--- a/examples/not-sync.rs
+++ b/examples/not-sync.rs
@@ -10,29 +10,28 @@ extern crate panic_halt;
 use core::marker::PhantomData;
 
 use cortex_m_semihosting::debug;
-use rtfm::app;
 
 pub struct NotSync {
     _0: PhantomData<*const ()>,
 }
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     static SHARED: NotSync = NotSync { _0: PhantomData };
 
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         debug::exit(debug::EXIT_SUCCESS);
     }
 
     #[task(resources = [SHARED])]
-    fn foo() {
-        let _: &NotSync = resources.SHARED;
+    fn foo(c: foo::Context) {
+        let _: &NotSync = c.resources.SHARED;
     }
 
     #[task(resources = [SHARED])]
-    fn bar() {
-        let _: &NotSync = resources.SHARED;
+    fn bar(c: bar::Context) {
+        let _: &NotSync = c.resources.SHARED;
     }
 
     extern "C" {
diff --git a/examples/periodic.rs b/examples/periodic.rs
index ba2b4933..f7841183 100644
--- a/examples/periodic.rs
+++ b/examples/periodic.rs
@@ -8,24 +8,24 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::hprintln;
-use rtfm::{app, Instant};
+use rtfm::Instant;
 
 const PERIOD: u32 = 8_000_000;
 
 // NOTE: does NOT work on QEMU!
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init(schedule = [foo])]
-    fn init() {
-        schedule.foo(Instant::now() + PERIOD.cycles()).unwrap();
+    fn init(c: init::Context) {
+        c.schedule.foo(Instant::now() + PERIOD.cycles()).unwrap();
     }
 
     #[task(schedule = [foo])]
-    fn foo() {
+    fn foo(c: foo::Context) {
         let now = Instant::now();
-        hprintln!("foo(scheduled = {:?}, now = {:?})", scheduled, now).unwrap();
+        hprintln!("foo(scheduled = {:?}, now = {:?})", c.scheduled, now).unwrap();
 
-        schedule.foo(scheduled + PERIOD.cycles()).unwrap();
+        c.schedule.foo(c.scheduled + PERIOD.cycles()).unwrap();
     }
 
     extern "C" {
diff --git a/examples/ramfunc.rs b/examples/ramfunc.rs
index 37ea82a7..4b0d69c7 100644
--- a/examples/ramfunc.rs
+++ b/examples/ramfunc.rs
@@ -8,18 +8,17 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init(spawn = [bar])]
-    fn init() {
-        spawn.bar().unwrap();
+    fn init(c: init::Context) {
+        c.spawn.bar().unwrap();
     }
 
     #[inline(never)]
     #[task]
-    fn foo() {
+    fn foo(_: foo::Context) {
         hprintln!("foo").unwrap();
 
         debug::exit(debug::EXIT_SUCCESS);
@@ -29,8 +28,8 @@ const APP: () = {
     #[inline(never)]
     #[link_section = ".data.bar"]
     #[task(priority = 2, spawn = [foo])]
-    fn bar() {
-        spawn.foo().unwrap();
+    fn bar(c: bar::Context) {
+        c.spawn.foo().unwrap();
     }
 
     extern "C" {
diff --git a/examples/resource.rs b/examples/resource.rs
index 5ddab9e8..06bdf395 100644
--- a/examples/resource.rs
+++ b/examples/resource.rs
@@ -9,21 +9,20 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     // A resource
     static mut SHARED: u32 = 0;
 
     #[init]
-    fn init() {
+    fn init(_: init::Context) {
         rtfm::pend(Interrupt::UART0);
         rtfm::pend(Interrupt::UART1);
     }
 
     #[idle]
-    fn idle() -> ! {
+    fn idle(_: idle::Context) -> ! {
         debug::exit(debug::EXIT_SUCCESS);
 
         // error: `SHARED` can't be accessed from this context
@@ -34,17 +33,17 @@ const APP: () = {
 
     // `SHARED` can be access from this context
     #[interrupt(resources = [SHARED])]
-    fn UART0() {
-        *resources.SHARED += 1;
+    fn UART0(mut c: UART0::Context) {
+        *c.resources.SHARED += 1;
 
-        hprintln!("UART0: SHARED = {}", resources.SHARED).unwrap();
+        hprintln!("UART0: SHARED = {}", c.resources.SHARED).unwrap();
     }
 
     // `SHARED` can be access from this context
     #[interrupt(resources = [SHARED])]
-    fn UART1() {
-        *resources.SHARED += 1;
+    fn UART1(mut c: UART1::Context) {
+        *c.resources.SHARED += 1;
 
-        hprintln!("UART1: SHARED = {}", resources.SHARED).unwrap();
+        hprintln!("UART1: SHARED = {}", c.resources.SHARED).unwrap();
     }
 };
diff --git a/examples/schedule.rs b/examples/schedule.rs
index fd633473..eaafb4c9 100644
--- a/examples/schedule.rs
+++ b/examples/schedule.rs
@@ -8,31 +8,31 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::hprintln;
-use rtfm::{app, Instant};
+use rtfm::Instant;
 
 // NOTE: does NOT work on QEMU!
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init(schedule = [foo, bar])]
-    fn init() {
+    fn init(c: init::Context) {
         let now = Instant::now();
 
         hprintln!("init @ {:?}", now).unwrap();
 
         // Schedule `foo` to run 8e6 cycles (clock cycles) in the future
-        schedule.foo(now + 8_000_000.cycles()).unwrap();
+        c.schedule.foo(now + 8_000_000.cycles()).unwrap();
 
         // Schedule `bar` to run 4e6 cycles in the future
-        schedule.bar(now + 4_000_000.cycles()).unwrap();
+        c.schedule.bar(now + 4_000_000.cycles()).unwrap();
     }
 
     #[task]
-    fn foo() {
+    fn foo(_: foo::Context) {
         hprintln!("foo  @ {:?}", Instant::now()).unwrap();
     }
 
     #[task]
-    fn bar() {
+    fn bar(_: bar::Context) {
         hprintln!("bar  @ {:?}", Instant::now()).unwrap();
     }
 
diff --git a/examples/shared-with-init.rs b/examples/shared-with-init.rs
index 5ddd2cc3..0fb9191c 100644
--- a/examples/shared-with-init.rs
+++ b/examples/shared-with-init.rs
@@ -18,17 +18,17 @@ const APP: () = {
     static mut SHARED: Option<MustBeSend> = None;
 
     #[init(resources = [SHARED])]
-    fn init() {
+    fn init(c: init::Context) {
         // this `message` will be sent to task `UART0`
         let message = MustBeSend;
-        *resources.SHARED = Some(message);
+        *c.resources.SHARED = Some(message);
 
         rtfm::pend(Interrupt::UART0);
     }
 
     #[interrupt(resources = [SHARED])]
-    fn UART0() {
-        if let Some(message) = resources.SHARED.take() {
+    fn UART0(c: UART0::Context) {
+        if let Some(message) = c.resources.SHARED.take() {
             // `message` has been received
             drop(message);
 
diff --git a/examples/singleton.rs b/examples/singleton.rs
deleted file mode 100644
index 9e48e541..00000000
--- a/examples/singleton.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-//! examples/singleton.rs
-
-#![deny(unsafe_code)]
-#![deny(warnings)]
-#![no_main]
-#![no_std]
-
-extern crate panic_semihosting;
-
-use alloc_singleton::stable::pool::{Box, Pool};
-use cortex_m_semihosting::{debug, hprintln};
-use lm3s6965::Interrupt;
-use rtfm::app;
-
-#[app(device = lm3s6965)]
-const APP: () = {
-    #[Singleton(Send)]
-    static mut M: [u32; 2] = [0; 2];
-
-    static mut P: Pool<M> = ();
-
-    #[init(resources = [M])]
-    fn init() -> init::LateResources {
-        rtfm::pend(Interrupt::I2C0);
-
-        init::LateResources {
-            P: Pool::new(resources.M),
-        }
-    }
-
-    #[interrupt(
-        priority = 2,
-        resources = [P],
-        spawn = [foo, bar],
-    )]
-    fn I2C0() {
-        spawn.foo(resources.P.alloc(1).unwrap()).unwrap();
-        spawn.bar(resources.P.alloc(2).unwrap()).unwrap();
-    }
-
-    #[task(resources = [P])]
-    fn foo(x: Box<M>) {
-        hprintln!("foo({})", x).unwrap();
-
-        resources.P.lock(|p| p.dealloc(x));
-
-        debug::exit(debug::EXIT_SUCCESS);
-    }
-
-    #[task(priority = 2, resources = [P])]
-    fn bar(x: Box<M>) {
-        hprintln!("bar({})", x).unwrap();
-
-        resources.P.dealloc(x);
-    }
-
-    extern "C" {
-        fn UART0();
-        fn UART1();
-    }
-};
diff --git a/examples/smallest.rs b/examples/smallest.rs
index e4d86be9..c1537168 100644
--- a/examples/smallest.rs
+++ b/examples/smallest.rs
@@ -13,5 +13,5 @@ use rtfm::app;
 #[app(device = lm3s6965)]
 const APP: () = {
     #[init]
-    fn init() {}
+    fn init(_: init::Context) {}
 };
diff --git a/examples/static.rs b/examples/static.rs
index 0309b681..2e3b5b41 100644
--- a/examples/static.rs
+++ b/examples/static.rs
@@ -9,14 +9,13 @@ extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     static KEY: u32 = ();
 
     #[init]
-    fn init() -> init::LateResources {
+    fn init(_: init::Context) -> init::LateResources {
         rtfm::pend(Interrupt::UART0);
         rtfm::pend(Interrupt::UART1);
 
@@ -24,14 +23,14 @@ const APP: () = {
     }
 
     #[interrupt(resources = [KEY])]
-    fn UART0() {
-        hprintln!("UART0(KEY = {:#x})", resources.KEY).unwrap();
+    fn UART0(c: UART0::Context) {
+        hprintln!("UART0(KEY = {:#x})", c.resources.KEY).unwrap();
 
         debug::exit(debug::EXIT_SUCCESS);
     }
 
     #[interrupt(priority = 2, resources = [KEY])]
-    fn UART1() {
-        hprintln!("UART1(KEY = {:#x})", resources.KEY).unwrap();
+    fn UART1(c: UART1::Context) {
+        hprintln!("UART1(KEY = {:#x})", c.resources.KEY).unwrap();
     }
 };
diff --git a/examples/task.rs b/examples/task.rs
index 4f168bb8..5bb32acb 100644
--- a/examples/task.rs
+++ b/examples/task.rs
@@ -8,38 +8,37 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::{debug, hprintln};
-use rtfm::app;
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     #[init(spawn = [foo])]
-    fn init() {
-        spawn.foo().unwrap();
+    fn init(c: init::Context) {
+        c.spawn.foo().unwrap();
     }
 
     #[task(spawn = [bar, baz])]
-    fn foo() {
+    fn foo(c: foo::Context) {
         hprintln!("foo").unwrap();
 
         // spawns `bar` onto the task scheduler
         // `foo` and `bar` have the same priority so `bar` will not run until
         // after `foo` terminates
-        spawn.bar().unwrap();
+        c.spawn.bar().unwrap();
 
         // spawns `baz` onto the task scheduler
         // `baz` has higher priority than `foo` so it immediately preempts `foo`
-        spawn.baz().unwrap();
+        c.spawn.baz().unwrap();
     }
 
     #[task]
-    fn bar() {
+    fn bar(_: bar::Context) {
         hprintln!("bar").unwrap();
 
         debug::exit(debug::EXIT_SUCCESS);
     }
 
     #[task(priority = 2)]
-    fn baz() {
+    fn baz(_: baz::Context) {
         hprintln!("baz").unwrap();
     }
 
diff --git a/examples/types.rs b/examples/types.rs
index c1b8cd69..c3dd89ca 100644
--- a/examples/types.rs
+++ b/examples/types.rs
@@ -8,45 +8,45 @@
 extern crate panic_semihosting;
 
 use cortex_m_semihosting::debug;
-use rtfm::{app, Exclusive, Instant};
+use rtfm::{Exclusive, Instant};
 
-#[app(device = lm3s6965)]
+#[rtfm::app(device = lm3s6965)]
 const APP: () = {
     static mut SHARED: u32 = 0;
 
     #[init(schedule = [foo], spawn = [foo])]
-    fn init() {
-        let _: Instant = start;
-        let _: rtfm::Peripherals = core;
-        let _: lm3s6965::Peripherals = device;
-        let _: init::Schedule = schedule;
-        let _: init::Spawn = spawn;
+    fn init(c: init::Context) {
+        let _: Instant = c.start;
+        let _: rtfm::Peripherals = c.core;
+        let _: lm3s6965::Peripherals = c.device;
+        let _: init::Schedule = c.schedule;
+        let _: init::Spawn = c.spawn;
 
         debug::exit(debug::EXIT_SUCCESS);
     }
 
     #[exception(schedule = [foo], spawn = [foo])]
-    fn SVCall() {
-        let _: Instant = start;
-        let _: SVCall::Schedule = schedule;
-        let _: SVCall::Spawn = spawn;
+    fn SVCall(c: SVCall::Context) {
+        let _: Instant = c.start;
+        let _: SVCall::Schedule = c.schedule;
+        let _: SVCall::Spawn = c.spawn;
     }
 
     #[interrupt(resources = [SHARED], schedule = [foo], spawn = [foo])]
-    fn UART0() {
-        let _: Instant = start;
-        let _: resources::SHARED = resources.SHARED;
-        let _: UART0::Schedule = schedule;
-        let _: UART0::Spawn = spawn;
+    fn UART0(c: UART0::Context) {
+        let _: Instant = c.start;
+        let _: resources::SHARED = c.resources.SHARED;
+        let _: UART0::Schedule = c.schedule;
+        let _: UART0::Spawn = c.spawn;
     }
 
     #[task(priority = 2, resources = [SHARED], schedule = [foo], spawn = [foo])]
-    fn foo() {
-        let _: Instant = scheduled;
-        let _: Exclusive<u32> = resources.SHARED;
-        let _: foo::Resources = resources;
-        let _: foo::Schedule = schedule;
-        let _: foo::Spawn = spawn;
+    fn foo(c: foo::Context) {
+        let _: Instant = c.scheduled;
+        let _: Exclusive<u32> = c.resources.SHARED;
+        let _: foo::Resources = c.resources;
+        let _: foo::Schedule = c.schedule;
+        let _: foo::Spawn = c.spawn;
     }
 
     extern "C" {