controller-legacy/handlers/poll.c

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <time.h>
#include <lmdb.h>
#include <unistd.h>
#include <sys/socket.h>
#include <poll.h>
#include <signal.h>

#include <logger.h>
#include <models/controller.h>
#include <database.h>
#include <config.h>
#include <constants.h>
#include <handlers.h>
#include <drivers.h>
#include <enums.h>
#include <helpers.h>
#include <wiringPi.h>
#include <piFace.h>
#include <wiring_debug.h>

void
handler_poll(struct pollfd *fds, controller_t *controller, MDB_env *mdb_env)
{
    /* An event on one of the fds has occurred. */
    for(int i = 0; i < POLL_FDS_COUNT; i++) {
        if(fds[i].revents & POLLIN)
        {
            /* data may be read on device number i. */
            LOG_DEBUG("fd %i may read data\n", fds[i].fd);
            switch(i)
            {
                case POLL_FDS_DISCOVERY:
                    handler_discovery(fds[i].fd, controller);
                    break;
                case POLL_FDS_COMMAND:
                    handler_command(fds[i].fd, controller);
                    controller_save(controller, mdb_env);
                    break;
            }
        }
        if(fds[i].revents & POLLHUP)
        {
            /* A hangup has occurred on device number i. */
            LOG_DEBUG("fd %i got closed\n", fds[i].fd);
        }
    }
}