text: /****************************************************************************
   *
   *  Copyright (c) 2017, Michael Becker (michael.f.becker@gmail.com)
   *
   *  This file is part of the FreeRTOS Add-ons project.
   *
   *  Source Code:
   *  https://github.com/michaelbecker/freertos-addons
   *
   *  Project Page:
   *  http://michaelbecker.github.io/freertos-addons/
   *
   *  On-line Documentation:
   *  http://michaelbecker.github.io/freertos-addons/docs/html/index.html
   *
   *  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.
   *  + Credit is appreciated, but not required, if you find this project
   *    useful enough to include in your application, product, device, etc.
   *
   *  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 "mutex.hpp"
  
  
  using namespace cpp_freertos;
  
  
  Mutex::Mutex()
  {
  }
  
  
  Mutex::~Mutex()
  {
      vSemaphoreDelete(handle);
  }
  
  
  MutexStandard::MutexStandard()
  {
      handle = xSemaphoreCreateMutex();
  
      if (handle == NULL) {
  #ifndef CPP_FREERTOS_NO_EXCEPTIONS
          throw MutexCreateException();
  #else
          configASSERT(!"Mutex Constructor Failed");
  #endif
      }
  }
  
  
  bool MutexStandard::Lock(TickType_t Timeout)
  {
      BaseType_t success = xSemaphoreTake(handle, Timeout);
      return success == pdTRUE ? true : false;
  }
  
  
  bool MutexStandard::Unlock()
  {
      BaseType_t success = xSemaphoreGive(handle);
      return success == pdTRUE ? true : false;
  }
  
  
  #if (configUSE_RECURSIVE_MUTEXES == 1)
  
  MutexRecursive::MutexRecursive()
  {
      handle = xSemaphoreCreateRecursiveMutex();
  
      if (handle == NULL) {
  #ifndef CPP_FREERTOS_NO_EXCEPTIONS
          throw MutexCreateException();
  #else
          configASSERT(!"Mutex Constructor Failed");
  #endif
      }
  }
  
  
  bool MutexRecursive::Lock(TickType_t Timeout)
  {
      BaseType_t success = xSemaphoreTakeRecursive(handle, Timeout);
      return success == pdTRUE ? true : false;
  }
  
  
  bool MutexRecursive::Unlock()
  {
      BaseType_t success = xSemaphoreGiveRecursive(handle);
      return success == pdTRUE ? true : false;
  }
  
  #endif
  
  
  LockGuard::LockGuard(Mutex& m) : mutex(m) {
  
      mutex.Lock();
  }
  
  
  LockGuard::~LockGuard() {
  
      mutex.Unlock();
  }
  