Norman Maurer a92cace808 Minimize object allocation when calling AbstractByteBuf.toString(..., Charset)
Motivation:

Calling AbstractByteBuf.toString(..., Charset) is used quite frequently by users but produce a lot of GC.

Modification:

- Use a FastThreadLocal to store the CharBuffer that are needed for decoding.
- Use internalNioBuffer(...) when possible

Result:

Less object creation / Less GC
2015-10-15 17:52:41 +02:00
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