d7fa7be67f
Motivation: There are currently many more places where this could be used which were possibly not considered when the method was added. If https://github.com/netty/netty/pull/8388 is included in its current form, a number of these places could additionally make use of the same BYTE_ARRAYS threadlocal. There's also a couple of adjacent places where an optimistically-pooled heap buffer is used for temp byte storage which could use the threadlocal too in preference to allocating a temp heap bytebuf wrapper. For example https://github.com/netty/netty/blob/4.1/buffer/src/main/java/io/netty/buffer/ByteBufUtil.java#L1417. Modifications: Replace new byte[] with PlatformDependent.allocateUninitializedArray() where appropriate; make use of ByteBufUtil.getBytes() in some places which currently perform the equivalent logic, including avoiding copy of backing array if possible (although would be rare). Result: Further potential speed-up with java9+ and appropriate compile flags. Many of these places could be on latency-sensitive code paths. |
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