Function moduleUnregisterUsedAPI

app/redis-6.2.6/src/module.c:7326–7341

Remove the specified module as an user of APIs of ever other module. * This is usually called when a module is unloaded. * * Returns the number of modules this module was using APIs from. */

 *
 * Returns the number of modules this module was using APIs from. */
int moduleUnregisterUsedAPI(RedisModule *module) {
    listIter li;
    listNode *ln;
    int count = 0;

    listRewind(module->using,&li);
    while((ln = listNext(&li))) {
        RedisModule *used = ln->value;
        listNode *ln = listSearchKey(used->usedby,module);
        if (ln) {
            listDelNode(used->usedby,ln);
            count++;
        }
    }
    return count;
}

/* Unregister all filters registered by a module.
 * This is called when a module is being unloaded.