hg: jmc/jmc: JMC-6582: ItemTreeBuilder is slow and not interruptible

[hdafgard at gmail.com]

Changeset: 583a1dde37f2
Author:    hdafgard <hdafgard at gmail.com>
Date:      2019-09-18 18:47 +0200
URL:       https://hg.openjdk.java.net/jmc/jmc/rev/583a1dde37f2

JMC-6582: ItemTreeBuilder is slow and not interruptible
Summary: Improve performance by using proper accessors and add implementable interface to allow interruption
Reviewed-by: hirt

! core/org.openjdk.jmc.flightrecorder.rules/src/main/java/org/openjdk/jmc/flightrecorder/rules/tree/ItemTreeBuilder.java
! core/org.openjdk.jmc.flightrecorder.rules/src/main/java/org/openjdk/jmc/flightrecorder/rules/tree/TreeNode.java