Introduced FixedArrayFIFOQueue
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Throw an exception has two dissadvantages on very high load application: (1) it flushes CPU caches, and (2) it allocates memory to build a stack trace. Here I've introduced a way to save tons of CPU time by allow user to return excepted result (`null` for example) when queue is empty.
Right now one queue is implemented it, I just added it as official interface to `PriorityQueue`.
This is a copy of `ArrayFIFOQueue` which has fixed capacity.
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@vigna I've heavy rework this PR to use |
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This is a copy of
ArrayFIFOQueuewhich has fixed capacity.I've also refactor a bit
PriorityQueueinterface to introduce a clear way to use exception free queue.