read-from-nag.c

来自「MANTIS是由科罗拉多大学开发的传感器网络嵌入式操作系统。 这是mantis」· C语言 代码 · 共 62 行

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <unistd.h>
#include <time.h>
#include <fcntl.h>

#include <sys/stat.h>
#include <sys/types.h>

#include <glib.h>

#include "libbionet-internal.h"
#include "bionet.h"




// FIXME: should return errors to the caller
void bionet_read_from_nag(void) {
    if (bionet_connect_to_nag() < 0) {
        return;
    }

    do {
        xmlDoc *xml;
        int r;
        struct timeval timeout;

        timeout.tv_sec = 0;
        timeout.tv_usec = 0;

        r = bionet_nxio_read(libbionet_nag_nxio, &timeout, &xml);
        switch (r) {
            case NXIO_CLOSE: {
                g_log(BIONET_LOG_DOMAIN, G_LOG_LEVEL_WARNING, "error reading from NAG");
                libbionet_kill_nag_connection();
                return;
            }
            case NXIO_INVALID_XML: {
                g_log(BIONET_LOG_DOMAIN, G_LOG_LEVEL_WARNING, "read invalid reply from NAG");
                libbionet_kill_nag_connection();
                return;
            }
        }

        if (xml == NULL) {
            // nothing from the NAG
            return;
        }

        libbionet_queued_messages_from_nag = g_slist_append(libbionet_queued_messages_from_nag, xml);

        bionet_handle_queued_nag_messages();
    } while(1);
}