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by kuschku 3199 days ago
The RTSJ solution is to simply pre-allocate everything you could ever want and reuse that.

That’s horrible to use for game development.
3 comments
pron 3198 days ago
> The RTSJ solution is to simply pre-allocate everything you could ever want and reuse that.

That's not the RTSJ solution. RTSJ uses arenas, which are great if you have regular allocation/deallocation cycles, like, say, a frame in a game.

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kuschku 3198 days ago
> That's not the RTSJ solution. RTSJ uses arenas, which are great if you have regular allocation/deallocation cycles, like, say, a frame in a game.

So how do I get a user’s Oracle JRE installation to use arenas? The only realistic scenario is to preallocate and reuse.

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pron 3198 days ago
You don't. You use an RTSJ JVM.
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kuschku 3198 days ago
That’s not an option, that was the whole point of the discussion.
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pron 3198 days ago
If changing the JVM spec is an option, then surely so is using an existing spec. IBM has an RTSJ JVM[1], which, I believe, is based on J9.

[1]: https://www.ibm.com/support/knowledgecenter/en/SSSTCZ_3.0.0/...

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kuschku 3198 days ago
Changing the JVM spec has a chance at being applied in future normal JVMs. Using an entirely separate solution has not.
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merb 3199 days ago
I'm not a game developer, so why is that horrible? consider I have an array/map of my game objects and the rest only works with methods, so most stuff does not lie on the heap, well that means basically no strings, since they would add to heap memory aswell, but only using basic datatypes and arrays.

why would some kind of that be problematic? I mean graphics programmic is kind of new to me, but considering that you could offload that to a c/c++ engine via jni (that's another horrible thing of some kind), but just the game code itself doesn't seems to be to bad, does it?

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kuschku 3198 days ago
> why would some kind of that be problematic? I mean graphics programmic is kind of new to me, but considering that you could offload that to a c/c++ engine via jni (that's another horrible thing of some kind), but just the game code itself doesn't seems to be to bad, does it?

The whole point is not to offload anything. If you need to offload anything, even the render loop, the language has failed.

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imtringued 3198 days ago
Isn't that what almost every game does during loading screens?
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