Function afterSleep

src/server.cpp:3044–3066

This function is called immediately after the event loop multiplexing * API returned, and the control is going to soon return to Redis by invoking * the different events callbacks. */

 * API returned, and the control is going to soon return to Redis by invoking
 * the different events callbacks. */
void afterSleep(struct aeEventLoop *eventLoop) {
    UNUSED(eventLoop);
    /* Do NOT add anything above moduleAcquireGIL !!! */

    /* Aquire the modules GIL so that their threads won't touch anything. 
       Don't check here that modules are enabled, rather use the result from beforeSleep
       Otherwise you may double acquire the GIL and cause deadlocks in the module */
    if (!ProcessingEventsWhileBlocked) {
        if (serverTL->modulesEnabledThisAeLoop) moduleAcquireGIL(TRUE /*fServerThread*/);
        aeThreadOnline();
        wakeTimeThread();

        serverAssert(serverTL->gcEpoch.isReset());
        serverTL->gcEpoch = g_pserver->garbageCollector.startEpoch();

        aeAcquireLock();
        for (int idb = 0; idb < cserver.dbnum; ++idb)
            g_pserver->db[idb]->trackChanges(false);
        aeReleaseLock();

        serverTL->disable_async_commands = false;
    }
}

/* =========================== Server initialization ======================== */