From e686ff78e9ee49e860920d6e41193626edc54bc2 Mon Sep 17 00:00:00 2001
From: Alexander Boettcher <alexander.boettcher@genode-labs.com>
Date: Fri, 24 Jan 2020 14:23:07 +0100
Subject: [PATCH] base: add blockade as derivate of lock

Issue #3612
---
 repos/base/include/base/blockade.h | 36 ++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 repos/base/include/base/blockade.h

diff --git a/repos/base/include/base/blockade.h b/repos/base/include/base/blockade.h
new file mode 100644
index 000000000..03557f459
--- /dev/null
+++ b/repos/base/include/base/blockade.h
@@ -0,0 +1,36 @@
+/*
+ * \brief  Blockade primitives
+ * \author Alexander Boettcher
+ * \date   2020-01-24
+ */
+
+/*
+ * Copyright (C) 2020 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU Affero General Public License version 3.
+ */
+
+#ifndef _INCLUDE__BASE__BLOCKADE_H_
+#define _INCLUDE__BASE__BLOCKADE_H_
+
+#include <base/lock.h>
+#include <util/noncopyable.h>
+
+namespace Genode { class Blockade; }
+
+
+class Genode::Blockade : Noncopyable
+{
+	private:
+		Lock _lock;
+
+	public:
+		explicit Blockade() : _lock(Lock::LOCKED) { }
+
+		void block() { _lock.lock(); }
+
+		void wakeup() { _lock.unlock(); }
+};
+
+#endif /* _INCLUDE__BASE__BLOCKADE_H_ */