Running D in the Java VM

[Paulo Pinto]

Am 21.11.2013 23:33, schrieb inout:
> On Thursday, 21 November 2013 at 22:02:14 UTC, Paulo Pinto wrote:
>> Am 21.11.2013 21:25, schrieb inout:
>>> On Thursday, 21 November 2013 at 07:35:01 UTC, Volcz wrote:
>>>> On Sunday, 17 November 2013 at 05:49:43 UTC, John J wrote:
>>>>> On 11/15/2013 02:13 AM, Jeremy DeHaan wrote:
>>>>> If it should survive as an alternative, Jave should have some more
>>>>> advantages over D, even after the D compiles to ARM.
>>>>
>>>> The Android NDK is only a second class citizen compared to the Java
>>>> SDK. The only use case I have heard of for the NDK is when companies
>>>> have a small C library with common functionality to make porting the
>>>> products to other platforms easier.
>>>
>>> That's not true. Most games are written entirely with NDK. Many
>>> applications, too (the app my team shipped recently contains a fair
>>> amount of C++ code in it, and it only grows).
>>
>> NDK only covers game related APIs, mostly.
>>
>> How much JNI calls do you make in standard applications?
>>
>> --
>> Paulo
>
> Everything accessible from Java is also accessible from NDK (by using
> reflection or by calling Java code from C++), so saying "NDK only covers
> game related APIs" is somewhat wrong.

I know, but I was addressing it from the pure point of view. Specially 
when you compare C++ programming with NDK and what iOS/WP 8 SDKs offer 
to C++ developers.


>
> I can only tell about our application, but it has a lot of JNI code. It
> is mostly used as a message passing mechanism between Java and C++
> (which live in separate threads so that Java GC doesn't stop native code
> execution).
>
> It's still experimental, but offloading some of the Java logic to C++
> gave as a significant performance boost, especially noticeable on
> low-end devices.
>
> A good example of the Java/C++ mix is a Chrome browser in Android. I'd
> say it's 50% Java/50% C++ (not counting the WebKit part).

That was what I was expecting.

Currently I am using C++ for a small graphics demo that should be 
multiplatform across OS handsets.

Thanks for the feedback.


--
Paulo