コード例 #1
0
ファイル: ejsArray.c プロジェクト: leemit/ejscript
static int growArray(Ejs *ejs, EjsArray *ap, int len)
{
    EjsObj      **dp;
    ssize       size, factor, count;
    int         i;

    assert(ap);

    if (len <= 0) {
        return 0;
    }
    if (len <= ap->length) {
        return 0;
    }
    size = mprGetBlockSize(ap->data);
    size = (int) (mprGetBlockSize(ap->data) / sizeof(EjsObj*));

    /*
        Allocate or grow the data structures.
     */
    if (len > size) {
        if (size > EJS_LOTSA_PROP) {
            /*
                Looks like a big object so grow by a bigger chunk
             */
            factor = max(size / 4, EJS_ROUND_PROP);
            count = (len + factor) / factor * factor;
        } else {
            count = len;
        }
        //  OPT - this is currently 16
        count = EJS_PROP_ROUNDUP(count);
        if (ap->data == 0) {
            assert(ap->length == 0);
            assert(count > 0);
            if ((ap->data = mprAllocZeroed(sizeof(EjsObj*) * count)) == 0) {
                return EJS_ERR;
            }
        } else {
            assert(size > 0);
            if ((ap->data = mprRealloc(ap->data, sizeof(EjsObj*) * count)) == 0) {
                return EJS_ERR;
            }
        }
        dp = &ap->data[ap->length];
        for (i = ap->length; i < count; i++) {
            *dp++ = ESV(undefined);
        }
    } else {
        mprNop(ITOP(size));
    }
    ap->length = len;
    return 0;
}
コード例 #2
0
ファイル: ejsArray.c プロジェクト: embedthis/ejs-1
static int growArray(Ejs *ejs, EjsArray *ap, int len)
{
    int         size, count, factor;

    mprAssert(ap);

    if (len <= 0) {
        return 0;
    }
    if (len <= ap->length) {
        return 0;
    }
    size = mprGetBlockSize(ap->data) / (int) sizeof(EjsVar*);

    /*
     *  Allocate or grow the data structures.
     */
    if (len > size) {
        if (size > EJS_LOTSA_PROP) {
            /*
             *  Looks like a big object so grow by a bigger chunk
             */
            factor = max(size / 4, EJS_NUM_PROP);
            count = (len + factor) / factor * factor;
        } else {
            count = len;
        }
        count = EJS_PROP_ROUNDUP(count);
        if (ap->data == 0) {
            mprAssert(ap->length == 0);
            mprAssert(count > 0);
            ap->data = (EjsVar**) mprAllocZeroed(ap, (int) sizeof(EjsVar*) * count);
            if (ap->data == 0) {
                return EJS_ERR;
            }

        } else {
            mprAssert(size > 0);
            ap->data = (EjsVar**) mprRealloc(ap, ap->data, (int) sizeof(EjsVar*) * count);
            if (ap->data == 0) {
                return EJS_ERR;
            }
            ejsZeroSlots(ejs, &ap->data[ap->length], (count - ap->length));
        }
    }
    ap->length = len;
    return 0;
}