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+#ifndef ucoo_utils_irq_locked_hh
+#define ucoo_utils_irq_locked_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2016 Nicolas Schodet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// }}}
+#include "ucoo/common.hh"
+
+namespace ucoo {
+
+/// Make sure interrupts are unlocked when scope is exited.
+class IrqLocked
+{
+ irq_flags_t flags_;
+ public:
+ /// Constructor, lock interrupts.
+ IrqLocked () { flags_ = irq_lock (); }
+ /// Destructor, unlock.
+ ~IrqLocked () { irq_restore (flags_); }
+ /// No copy constructor.
+ IrqLocked (const IrqLocked &) = delete;
+};
+
+} // namespace ucoo
+
+#endif // ucoo_utils_irq_locked_hh