Mbed OS Reference | SynchronizedIntegral.h Source File

 /*
  * 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 */
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