+ fprintf(stderr, "\nCubemap starting.\n");
+
+ string config_filename = (argc == 1) ? "cubemap.config" : argv[1];
+ vector<ConfigLine> config = parse_config(config_filename);
+
+ // Go through each (parsed) configuration line.
+ int port = -1;
+ for (unsigned i = 0; i < config.size(); ++i) {
+ if (config[i].keyword == "port") {
+ if (config[i].parameters.size() > 0 ||
+ config[i].arguments.size() != 1) {
+ fprintf(stderr, "ERROR: 'port' takes one argument and no parameters\n");
+ exit(1);
+ }
+ port = atoi(config[i].arguments[0].c_str());
+ }
+ }
+ if (port <= 0 || port > 65535) {
+ fprintf(stderr, "ERROR: Missing or invalid 'port' statement in config file\n");
+ exit(1);
+ }
+
+ // Create the servers.
+ servers = new Server[NUM_SERVERS];
+
+ int server_sock;
+ if (argc == 4 && strcmp(argv[2], "-state") == 0) {
+ fprintf(stderr, "Deserializing state from previous process... ");
+ int state_fd = atoi(argv[3]);
+ CubemapStateProto loaded_state = read_tempfile(state_fd);
+
+ // Deserialize the streams.
+ for (int i = 0; i < loaded_state.streams_size(); ++i) {
+ for (int j = 0; j < NUM_SERVERS; ++j) {
+ servers[j].add_stream_from_serialized(loaded_state.streams(i));
+ }
+ }
+
+ // Put back the existing clients. It doesn't matter which server we
+ // allocate them to, so just do round-robin.
+ for (int i = 0; i < loaded_state.clients_size(); ++i) {
+ servers[i % NUM_SERVERS].add_client_from_serialized(loaded_state.clients(i));
+ }
+
+ // Deserialize the server socket.
+ server_sock = loaded_state.server_sock();
+
+ fprintf(stderr, "done.\n");
+ } else {
+ server_sock = create_server_socket(port);
+
+ // TODO: This should come from the config file.
+ for (int i = 0; i < NUM_SERVERS; ++i) {
+ servers[i].add_stream(STREAM_ID);
+ }
+ }
+
+ for (int i = 0; i < NUM_SERVERS; ++i) {
+ servers[i].run();
+ }
+
+ pthread_t acceptor_thread;
+ pthread_create(&acceptor_thread, NULL, acceptor_thread_run, reinterpret_cast<void *>(server_sock));
+
+ // TODO: This should come from the config file.
+ Input input(STREAM_ID, STREAM_URL);
+ input.run();
+
+ signal(SIGHUP, hup);
+
+ while (!hupped) {
+ usleep(100000);
+ }
+
+ input.stop();
+
+ CubemapStateProto state;
+ state.set_server_sock(server_sock);
+ for (int i = 0; i < NUM_SERVERS; ++i) {
+ servers[i].stop();
+
+ CubemapStateProto local_state = servers[i].serialize();
+
+ // The stream state should be identical between the servers, so we only store it once.
+ if (i == 0) {
+ state.mutable_streams()->MergeFrom(local_state.streams());
+ }
+ for (int j = 0; j < local_state.clients_size(); ++j) {
+ state.add_clients()->MergeFrom(local_state.clients(j));
+ }
+ }
+ delete[] servers;
+
+ fprintf(stderr, "Serializing state and re-execing...\n");
+ int state_fd = make_tempfile(state);
+
+ char buf[16];
+ sprintf(buf, "%d", state_fd);
+
+ for ( ;; ) {
+ execlp(argv[0], argv[0], config_filename.c_str(), "-state", buf, NULL);
+ perror("execlp");
+ fprintf(stderr, "PANIC: re-exec of %s failed. Waiting 0.2 seconds and trying again...\n", argv[0]);
+ usleep(200000);
+ }