integrated interface into bin semaphore

tasks/SemaphoreIF.h

@@ -9,10 +9,11 @@
  * 			task synchronization.
  */
 class SemaphoreIF {
+public:
+	virtual~ SemaphoreIF() {};
 	//!< Needs to be defined in implementation.
 	static const uint32_t NO_TIMEOUT;
 	static const uint8_t INTERFACE_ID = CLASS_ID::SEMAPHORE_IF;
-
 	//! Semaphore timeout
 	static constexpr ReturnValue_t SEMAPHORE_TIMEOUT = MAKE_RETURN_CODE(1);
 	//! The current semaphore can not be given, because it is not owned
@@ -26,24 +27,23 @@ class SemaphoreIF {
 	 * for a maximum of timeoutMs while trying to acquire the semaphore.
 	 * This can be used to achieve task synchrnization.
 	 * @param timeoutMs
-	 * @return
+	 * @return - c RETURN_OK for successfull acquisition
 	 */
-	ReturnValue_t acquire(uint32_t timeoutMs) = 0;
+	virtual ReturnValue_t acquire(uint32_t timeoutMs) = 0;
 
 	/**
 	 * Corrensponding call to release a semaphore.
-	 * @return
+	 * @return -@c RETURN_OK for successfull release
 	 */
-	ReturnValue_t release() = 0;
+	virtual ReturnValue_t release() = 0;
 
 	/**
 	 * If the semaphore is a counting semaphore then the semaphores current
 	 * count value is returned. If the semaphore is a binary semaphore then 1
 	 * is returned if the semaphore is available, and 0 is returned if the
 	 * semaphore is not available.
-	 * @return
 	 */
-	uint8_t getSemaphoreCounter() = 0;
+	virtual uint8_t getSemaphoreCounter() = 0;
 };
 
 #endif /* FRAMEWORK_TASKS_SEMAPHOREIF_H_ */