Xiaoyan Lin b7415a3307 Add a reusable ArrayList to InternalThreadLocalMap ... Motivation: See #3411. A reusable ArrayList in InternalThreadLocalMap can avoid allocations in the following pattern: ``` List<...> list = new ArrayList<...>(); add something to list but never use InternalThreadLocalMap return list.toArray(new ...[list.size()]); ``` Modifications: Add a reusable ArrayList to InternalThreadLocalMap and update codes to use it. Result: Reuse a thread local ArrayList to avoid allocations.		2016-02-01 15:49:28 +01:00
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handler	Add a reusable ArrayList to InternalThreadLocalMap	2016-02-01 15:49:28 +01:00