Import Mbed OS hard-float snapshot

rtos/tests/TESTS/mbedmicro-rtos-mbed/threads/SynchronizedIntegral.h

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2013-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MBEDMICRO_RTOS_MBED_THREADS_SYNCHRONIZED_INTEGRAL
+#define MBEDMICRO_RTOS_MBED_THREADS_SYNCHRONIZED_INTEGRAL
+
+#include <rtos.h>
+#include <mstd_mutex>
+
+using mstd::lock_guard;
+
+/**
+ * Thread safe wrapper for integral types.
+ * @tparam T type of the integral
+ */
+template<typename T>
+class SynchronizedIntegral {
+public:
+    SynchronizedIntegral(T value) : _mutex(), _value(value) { }
+
+    // preincrement operator
+    T operator++()
+    {
+        lock_guard<rtos::Mutex> lock(_mutex);
+        return ++_value;
+    }
+
+    // predecrement operator
+    T operator--()
+    {
+        lock_guard<rtos::Mutex> lock(_mutex);
+        return --_value;
+    }
+
+    // post increment operator
+    T operator++(int)
+    {
+        lock_guard<rtos::Mutex> lock(_mutex);
+        return _value++;
+    }
+
+    // post decrement operator
+    T operator--(int)
+    {
+        lock_guard<rtos::Mutex> lock(_mutex);
+        return _value--;
+    }
+
+    // conversion operator, used also for <,>,<=,>=,== and !=
+    operator T()  const
+    {
+        lock_guard<rtos::Mutex> lock(_mutex);
+        return _value;
+    }
+
+    // access to the internal mutex
+    rtos::Mutex &internal_mutex()
+    {
+        return _mutex;
+    }
+
+private:
+    mutable rtos::Mutex _mutex;
+    T _value;
+};
+#endif /* MBEDMICRO_RTOS_MBED_THREADS_SYNCHRONIZED_INTEGRAL */