wait_obj.h

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#ifndef UTILS_WAIT_OBJ_H_
#define UTILS_WAIT_OBJ_H_
 
#ifdef __cplusplus
#include <condition_variable>
#include <mutex>
 
struct wait_obj {
        public:
                wait_obj() : m_val(false) {
                }
                void wait() {
                        std::unique_lock<std::mutex> lk(m_lock);
                        m_cv.wait(lk, [this] { return m_val; });
                }
                void reset() {
                        std::lock_guard<std::mutex> lk(m_lock);
                        m_val = false;
                }
                void notify() {
                        std::unique_lock<std::mutex> lk(m_lock);
                        m_val = true;
                        lk.unlock();
                        m_cv.notify_one();
                }
        private:
                std::mutex m_lock;
                std::condition_variable m_cv;
                bool m_val;
};
#endif // __cplusplus
 
struct wait_obj;
 
//
// C wrapper
//
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
 
struct wait_obj *wait_obj_init(void);
void wait_obj_reset(struct wait_obj *);
void wait_obj_wait(struct wait_obj *);
void wait_obj_notify(struct wait_obj *);
void wait_obj_done(struct wait_obj *);
 
#ifdef __cplusplus
}
#endif // __cplusplus
 
#endif // VIDEO_H_