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Ran 27 Jul 2016 03:02PM UTC

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Committed 27 Jul 2016 02:59PM UTC coverage: 100.0%. First build

Job # 331.2

Build Type

push

travis-ci

Committed by

prashantv

Commit Message

Support concurrent logging to a single WriteSyncer

Currently, the WriteSyncer assumes the underlying Writer will support
concurrent Writes correctly. However, this is not true for common
io.Writer implementations:
 - *os.File may call the write syscall multiple times
 - *bytes.Buffer does not support concurrent writes at all

Instead, we will wrap all passed in WriteSyncers in a lockedWriteSyncer
which will use a mutex to serialize calls to the underlying WriteSyncer.

In future, we may want to expose a way of setting a WriteSyncer that
already supports concurrent calls, but since most common implementations
cannot handle concurrent writes correctly, locking the writer seems like
a simpler default.

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