int
main(int argc, char** argv)
{
signal(SIGINT, shutdown_module);
carmen_ipc_initialize(argc, argv);
carmen_param_check_version(argv[0]);
initialize_structures();
read_parameters(argc, argv, car_config);
initialize_ipc();
subscribe_to_relevant_messages();
carmen_ipc_dispatch();
return 0;
}
/**
* Main function of the server application. It does a infinite loop unless a user exits the program.
* @param[in] listener_socket File descriptor of the socket listening incoming connections.
* @param[in] fifo File descriptor of a temporary FIFO file.
*/
void
doServer(int listener_socket, int fifo) {
int i, fdmax, newfd;
players_list_s *players_list = NULL;
games_list_s *games_list = NULL;
threads_list_s *threads_list = NULL;
pthread_mutex_t players_list_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t games_list_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t threads_list_mutex = PTHREAD_MUTEX_INITIALIZER;
fd_set base_rdfs, rdfs;
sigset_t mask, oldmask;
FD_ZERO(&base_rdfs);
FD_SET(listener_socket, &base_rdfs);
fdmax = max(listener_socket, fifo);
sigemptyset(&mask);
sigaddset(&mask, SIGINT);
sigprocmask(SIG_BLOCK, &mask, &oldmask);
initialize_structures(&players_list, &games_list, &threads_list);
printf("Four-in-a-line server started\n");
while (work) {
rdfs = base_rdfs;
if (pselect(fdmax + 1, &rdfs, NULL, NULL, NULL, &oldmask) > 0) {
for (i = 0; i <= fdmax; i++) {
newfd = -1;
if (FD_ISSET(i, &rdfs)) {
if (i == listener_socket) {
/* request from newly connected client */
newfd = add_new_client(listener_socket);
if (newfd > 0) {
FD_SET(newfd, &base_rdfs);
if (newfd > fdmax) {
fdmax = newfd;
}
display_log(newfd);
communicate(newfd, &base_rdfs, &players_list,
&games_list, &threads_list,
&players_list_mutex, &games_list_mutex,
&threads_list_mutex);
} else if (i == fifo) {
/* trick to update base_rdfs set */
char temp[1];
bulk_read(fifo, temp, 1);
}
} else {
/* request from already connected client */
communicate(i, &base_rdfs, &players_list, &games_list,
&threads_list, &players_list_mutex,
&games_list_mutex, &threads_list_mutex);
}
}
}
} else {
if (EINTR == errno)
continue;
ERR("pselect");
}
}
pthread_mutex_destroy(&players_list_mutex);
pthread_mutex_destroy(&games_list_mutex);
pthread_mutex_destroy(&threads_list_mutex);
destroy_players(players_list);
destroy_games(games_list);
destroy_threads(threads_list);
sigprocmask(SIG_UNBLOCK, &mask, NULL);
}
