/**
 * @file include/di/Semaphore.h
 * @brief Counting semaphore implementation
 * @date March 31, 2016
 * @author R.W.A. van der Heijden
 * @copyright 2016 Dual Inventive Technology Centre B.V.
 *
 * Counting semaphore implementation using C++ STL
 */
#ifndef INCLUDE_DI_SEMAPHORE_H_
#define INCLUDE_DI_SEMAPHORE_H_

#include <memory>
#include <mutex>
#include <condition_variable>

namespace Di {
/**
 * @class Semaphore
 *
 * Counting semaphore implementation using C++ STL
 */
class Semaphore {
 public:
	/**
	 * Constructor, initialized the counter
	 */
	Semaphore();

	/**
	 * Notify the waiting process
	 */
	void notify(void);

	/**
	 * Wait for a notification
	 */
	void wait(void);

 private:
	std::mutex __mutex;  //!< Mutex used for condition
	std::condition_variable __condition;  //!< Condition for waiting
	uint64_t __count;  //!< Semaphore counter
};

}  // namespace Di

#endif  // INCLUDE_DI_SEMAPHORE_H_