implemented semaph factory

tasks/SemaphoreFactory.h

@@ -0,0 +1,45 @@
+#ifndef FRAMEWORK_TASKS_SEMAPHOREFACTORY_H_
+#define FRAMEWORK_TASKS_SEMAPHOREFACTORY_H_
+#include <framework/tasks/SemaphoreIF.h>
+
+/**
+ * Creates Semaphore.
+ * This class is a "singleton" interface, i.e. it provides an
+ * interface, but also is the base class for a singleton.
+ */
+class SemaphoreFactory {
+public:
+	virtual ~SemaphoreFactory();
+	/**
+	 * Returns the single instance of SemaphoreFactory.
+	 * The implementation of #instance is found in its subclasses.
+	 * Thus, we choose link-time variability of the  instance.
+	 */
+	static SemaphoreFactory* instance();
+
+	/**
+	 * Create a binary semaphore.
+	 * Creator function for a binary semaphore which may only be acquired once
+	 * @return Pointer to newly created semaphore class instance.
+	 */
+	SemaphoreIF* createBinarySemaphore();
+	/**
+	 * Create a counting semaphore.
+	 * Creator functons for a counting semaphore which may be acquired multiple
+	 * times.
+	 * @param count Semaphore can be taken count times.
+	 * @param initCount Initial count value.
+	 * @return
+	 */
+	SemaphoreIF* createCountingSemaphore(uint8_t count, uint8_t initCount);
+	void deleteMutex(SemaphoreIF* mutex);
+
+private:
+	/**
+	 * External instantiation is not allowed.
+	 */
+	SemaphoreFactory();
+	static SemaphoreFactory* factoryInstance;
+};
+
+#endif /* FRAMEWORK_TASKS_SEMAPHOREFACTORY_H_ */