Function decrRefCount

src/object.cpp:405–431

}

void decrRefCount(robj_roptr o) {
    if (o->getrefcount(std::memory_order_relaxed) == OBJ_SHARED_REFCOUNT)
        return;
    unsigned prev = o->release();
    if (prev == 1) {
        switch(o->type) {
        case OBJ_STRING: freeStringObject(o); break;
        case OBJ_LIST: freeListObject(o); break;
        case OBJ_SET: freeSetObject(o); break;
        case OBJ_ZSET: freeZsetObject(o); break;
        case OBJ_HASH: freeHashObject(o); break;
        case OBJ_MODULE: freeModuleObject(o); break;
        case OBJ_STREAM: freeStreamObject(o); break;
        case OBJ_CRON: freeCronObject(o); break;
        case OBJ_NESTEDHASH: freeNestedHashObject(o); break;
        default: serverPanic("Unknown object type"); break;
        }
        o->~redisObject();
        if (g_pserver->fActiveReplica) {
            zfree(reinterpret_cast<redisObjectExtended*>(o.unsafe_robjcast())-1);
        } else {
            zfree(o.unsafe_robjcast());
        }
    } else {
        if (prev <= 0) serverPanic("decrRefCount against refcount <= 0");
    }
}

/* This variant of decrRefCount() gets its argument as void, and is useful
 * as free method in data structures that expect a 'void free_object(void*)'