Function createStringObjectFromLongLongWithOptions

src/object.cpp:174–198

Create a string object from a long long value. When possible returns a * shared integer object, or at least an integer encoded one. * * If valueobj is non zero, the function avoids returning a shared * integer, because the object is going to be used as value in the Redis key * space (for instance when the INCR command is used), so we want LFU/LRU * values specific for each key. */

 * space (for instance when the INCR command is used), so we want LFU/LRU
 * values specific for each key. */
robj *createStringObjectFromLongLongWithOptions(long long value, int valueobj) {
    robj *o;

    if (g_pserver->maxmemory == 0 ||
        !(g_pserver->maxmemory_policy & MAXMEMORY_FLAG_NO_SHARED_INTEGERS))
    {
        /* If the maxmemory policy permits, we can still return shared integers
         * even if valueobj is true. */
        valueobj = 0;
    }

    if (value >= 0 && value < OBJ_SHARED_INTEGERS && valueobj == 0) {
        incrRefCount(shared.integers[value]);
        o = shared.integers[value];
    } else {
        if (value >= LONG_MIN && value <= LONG_MAX) {
            o = createObject(OBJ_STRING, NULL);
            o->encoding = OBJ_ENCODING_INT;
            o->m_ptr = (void*)((long)value);
        } else {
            o = createObject(OBJ_STRING,sdsfromlonglong(value));
        }
    }
    return o;
}

/* Wrapper for createStringObjectFromLongLongWithOptions() always demanding
 * to create a shared object if possible. */