| #ifndef EVENTSSOURCESPAWNER_H |
| #define EVENTSSOURCESPAWNER_H |
| |
| #include <new> |
| #include <stdexcept> |
| |
| #include <MessageLog.h> |
| #include <exceptions.h> |
| |
| extern "C" |
| { |
| #include <sys/types.h> |
| } |
| |
| class EventsSourceSpawner |
| { |
| public: |
| static const char* EVENTS_PROGRAM; |
| static const char* EVENTS_PROGRAM_ARGS[]; |
| |
| static const int PIPE_READ_SIDE; |
| static const int PIPE_WRITE_SIDE; |
| |
| EventsSourceSpawner(MessageLog& logRef); |
| virtual ~EventsSourceSpawner(); |
| |
| EventsSourceSpawner(const EventsSourceSpawner& orig) = delete; |
| EventsSourceSpawner& operator=(const EventsSourceSpawner& orig) = delete; |
| EventsSourceSpawner(EventsSourceSpawner&& orig) = default; |
| EventsSourceSpawner& operator=(EventsSourceSpawner&& orig) = default; |
| |
| virtual pid_t get_process_id(); |
| virtual int get_events_source_fd(); |
| |
| // @throws std::bad_alloc, EventSourceException |
| virtual int spawn_source(); |
| |
| // @throws EventsSourceException |
| virtual void cleanup_child_processes(); |
| private: |
| MessageLog& log; |
| |
| void close_pipe(); |
| |
| // @throws EventsSourceException |
| void checked_int_rc(int rc) const; |
| |
| // @throws std::bad_alloc |
| char** init_spawn_args() const; |
| void destroy_spawn_args(char** spawn_args) const noexcept; |
| |
| // @throws EventsSourceException |
| void cleanup_child_processes_impl(); |
| |
| void terminate_child_process() noexcept; |
| |
| pid_t spawned_pid {-1}; |
| int pipe_fd[2] {-1, -1}; |
| }; |
| |
| class EventsSourceException : public EventException |
| { |
| public: |
| EventsSourceException() = default; |
| virtual ~EventsSourceException() noexcept = default; |
| |
| EventsSourceException(const EventsSourceException& orig) = delete; |
| EventsSourceException& operator=(const EventsSourceException& orig) = delete; |
| EventsSourceException(EventsSourceException&& orig) = default; |
| EventsSourceException& operator=(EventsSourceException&& orig) = default; |
| }; |
| |
| #endif /* EVENTSSOURCESPAWNER_H */ |