Function initServer

app/redis-6.2.6/src/server.c:3147–3368

}

void initServer(void) {
    int j;

    signal(SIGHUP, SIG_IGN);
    signal(SIGPIPE, SIG_IGN);
    setupSignalHandlers();
    makeThreadKillable();

    if (server.syslog_enabled) {
        openlog(server.syslog_ident, LOG_PID | LOG_NDELAY | LOG_NOWAIT,
            server.syslog_facility);
    }

    /* Initialization after setting defaults from the config system. */
    server.aof_state = server.aof_enabled ? AOF_ON : AOF_OFF;
    server.hz = server.config_hz;
    server.pid = getpid();
    server.in_fork_child = CHILD_TYPE_NONE;
    server.main_thread_id = pthread_self();
    server.current_client = NULL;
    server.errors = raxNew();
    server.fixed_time_expire = 0;
    server.clients = listCreate();
    server.clients_index = raxNew();
    server.clients_to_close = listCreate();
    server.slaves = listCreate();
    server.monitors = listCreate();
    server.clients_pending_write = listCreate();
    server.clients_pending_read = listCreate();
    server.clients_timeout_table = raxNew();
    server.replication_allowed = 1;
    server.slaveseldb = -1; /* Force to emit the first SELECT command. */
    server.unblocked_clients = listCreate();
    server.ready_keys = listCreate();
    server.clients_waiting_acks = listCreate();
    server.get_ack_from_slaves = 0;
    server.client_pause_type = 0;
    server.paused_clients = listCreate();
    server.events_processed_while_blocked = 0;
    server.system_memory_size = zmalloc_get_memory_size();
    server.blocked_last_cron = 0;
    server.blocking_op_nesting = 0;

    if ((server.tls_port || server.tls_replication || server.tls_cluster)
                && tlsConfigure(&server.tls_ctx_config) == C_ERR) {
        serverLog(LL_WARNING, "Failed to configure TLS. Check logs for more info.");
        exit(1);
    }

    createSharedObjects();
    adjustOpenFilesLimit();
    const char *clk_msg = monotonicInit();
    serverLog(LL_NOTICE, "monotonic clock: %s", clk_msg);
    server.el = aeCreateEventLoop(server.maxclients+CONFIG_FDSET_INCR);
    if (server.el == NULL) {
        serverLog(LL_WARNING,
            "Failed creating the event loop. Error message: '%s'",
            strerror(errno));