public static int getIntVolatile(final int[] target, final long index) {
        return UNSAFE_ACCESSOR.getIntVolatile(target, INT_ARRAY_BASE_OFFSET + (index * INT_ARRAY_INDEX_SCALE));
    }
Get a {@link UnsafeAccessor} appropriate for the platform.
jraft-core/src/main/java/com/alipay/sofa/jraft/util/internal/UnsafeUtil.java