Use templating/codegen to generate required field padding and ordering about jctools HOT 4 CLOSED

It's even funnier with constructors ;) but I approuve it very much!
Thanks
GG

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It's a PITA, so hopefully an automation win. I'm not that much of a codegen maestro, but I know it can be done. Any proposals/recommendation both on the naming/annotations/API front and on tool recommendations are very welcome

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If you go the codegen route, I was thinking of also generating multiple versions of the Queues for different constant like sparse-shift 0 vs 2. Just to benefit from the static final performance.

class ConcurrentCircularArrayQueue extends ConcurrentCircularArrayQueueL0Pad {
@shape(LowMemory=0, HighPerf=2)
protected static final int SPARSE_SHIFT = 0;

this would generate 2 classes:

ConcurrentCircularArrayQueueLowMemory
and
ConcurrentCircularArrayQueueHighPerf

for example...

My 2 cents

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This is a duplicate of #9

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