add closure to run a function with interruption

Author: stlankes

src/collections/mod.rs

@@ -0,0 +1,21 @@
+// Copyright (c) 2020 Stefan Lankes, RWTH Aachen University
+//
+// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
+// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. This file may not be
+// copied, modified, or distributed except according to those terms.
+
+use crate::arch::irq::*;
+
+/// `irqsave` guarantees that the call of the closure
+/// will be not disturbed by an interrupt
+#[inline]
+pub fn irqsave<F, R>(f: F) -> R
+where
+	F: FnOnce() -> R,
+{
+	let irq = irq_nested_disable();
+	let ret = f();
+	irq_nested_enable(irq);
+	ret
+}

src/lib.rs

@@ -29,6 +29,7 @@ pub mod macros;
 #[macro_use]
 pub mod logging;
 pub mod arch;
+pub mod collections;
 pub mod console;
 pub mod consts;
 pub mod errno;