Brian Goff 933477cfba Improve performance/reduce allocs of bytespipe ...

Creates a `fixedBuffer` type that is used to encapsulate functionality
for reading/writing from the underlying byte slices.

Uses lazily-loaded set of sync.Pools for storing buffers that are no
longer needed so they can be re-used.

```
benchmark                     old ns/op     new ns/op     delta
BenchmarkBytesPipeWrite-8     138469        48985         -64.62%
BenchmarkBytesPipeRead-8      130922        56601         -56.77%

benchmark                     old allocs     new allocs     delta
BenchmarkBytesPipeWrite-8     18             8              -55.56%
BenchmarkBytesPipeRead-8      0              0              +0.00%

benchmark                     old bytes     new bytes     delta
BenchmarkBytesPipeWrite-8     66903         1649          -97.54%
BenchmarkBytesPipeRead-8      0             1             +Inf%
```

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 9a25b1d942da88439ec04797ff6f1c33c3b5562d
Component: engine

2016-04-05 13:06:04 -04:00

components/engine

Improve performance/reduce allocs of bytespipe

2016-04-05 13:06:04 -04:00

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