Improve circularbuffer performance by removing redundant fields #256
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Improve circular buffer performance by removing redundant fields `full` and `maxSize` in `Queue` and simplifying the Enqueue().
```
goos: linux
goarch: amd64
pkg: github.com/emirpasic/gods/v2/queues/circularbuffer
cpu: Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
ArrayQueueDequeue100-8 43.09n ± 1% 33.10n ± 0% -23.20% (n=50)
ArrayQueueDequeue1000-8 359.5n ± 0% 260.6n ± 0% -27.52% (n=50)
ArrayQueueDequeue10000-8 3.541µ ± 0% 2.530µ ± 0% -28.55% (n=50)
ArrayQueueDequeue100000-8 35.24µ ± 0% 25.19µ ± 0% -28.52% (n=50)
ArrayQueueEnqueue100-8 488.9n ± 0% 331.3n ± 0% -32.23% (n=50)
ArrayQueueEnqueue1000-8 4.826µ ± 0% 3.316µ ± 0% -31.30% (n=50)
ArrayQueueEnqueue10000-8 48.23µ ± 0% 33.21µ ± 1% -31.16% (n=50)
ArrayQueueEnqueue100000-8 482.7µ ± 0% 331.0µ ± 0% -31.43% (n=50)
geomean 4.249µ 3.004µ -29.29%
│ old.txt │ new.txt │
│ B/op │ B/op vs base │
ArrayQueueDequeue100-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueDequeue1000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueDequeue10000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueDequeue100000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue100-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue1000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue10000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue100000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
geomean ² +0.00% ²
¹ all samples are equal
² summaries must be >0 to compute geomean
│ old.txt │ new.txt │
│ allocs/op │ allocs/op vs base │
ArrayQueueDequeue100-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueDequeue1000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueDequeue10000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueDequeue100000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue100-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue1000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue10000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
ArrayQueueEnqueue100000-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=50) ¹
geomean ² +0.00% ²
¹ all samples are equal
² summaries must be >0 to compute geomean
```
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We can maintain
maxSizeusing the capacity and length ofvalues, and determine thefullflag by checking whethersizeis equal to the capacity (or length) ofvalues.In addition, in
Enqueue(), when the queue is full, we can simply update the value ofstartinstead of callingDequeue(), as the overhead of callingDequeue()is higher than updating the value ofstart.ArrayQueueDequeue.ArrayQueueEnqueue.