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4 commits

Author SHA1 Message Date
Brian Goff
9a25b1d942 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>
2016-04-05 13:06:04 -04:00
Aaron Lehmann
64f8ee444d Cap the amount of buffering done by BytesPipe
Turn BytesPipe's Read and Write functions into blocking, goroutine-safe
functions. Add a CloseWithError function to propagate an error code to
the Read function.

Adjust tests to work with the blocking Read and Write functions.

Remove BufReader, since now its users can use BytesPipe directly.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
2015-11-12 10:11:29 -08:00
Tonis Tiigi
c5b23337c3 Make bytesPipe use linear allocations
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
2015-09-23 17:12:54 -07:00
Alexander Morozov
24310b5b4a Add BytesPipe datastructure to ioutils
Signed-off-by: Alexander Morozov <lk4d4@docker.com>
2015-09-23 16:00:27 -07:00