static void *probing(void *arg) //master probe the time_sheet in every 5 seconds
{
Pthread_detach(pthread_self());
while (1)
{
sleep(5);
printf("start probing\n");
time_t cur_time = time(NULL);
for(map<pair<int, int>, time_t >::iterator it = ms.Gettimesheet().begin(); it != ms.Gettimesheet().end(); ++it)
{
if (cur_time - (it->second) > 5) //if certain server's last ping from now is more than 5 seconds, it means the server fails, start notify client and server the failure
{
printf("%s\n",seperator);
printf("Server 127.0.0.1:%d FAILS\n",it->first.second);
ms.client_notify(it->first, false);
ms.server_notify(it->first, false);
it = ms.Gettimesheet().erase(it);
if (it == ms.Gettimesheet().end())
break;
}
}
}
}
