From 842f672bafd560beeeeebed7accf196101003625 Mon Sep 17 00:00:00 2001
From: Paulo Pinheiro <paulovictor.pinheiro@gmail.com>
Date: Fri, 4 Oct 2019 00:56:29 +0200
Subject: [PATCH] [FlexBuffers][Java] Cache size of Sized objects in
 FlexBuffers (#5551)

In my benchmarks it shows deserialization performance improvements of
around 7%
---
 java/com/google/flatbuffers/FlexBuffers.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/java/com/google/flatbuffers/FlexBuffers.java b/java/com/google/flatbuffers/FlexBuffers.java
index 1cd2227ee..e0eb37b7d 100644
--- a/java/com/google/flatbuffers/FlexBuffers.java
+++ b/java/com/google/flatbuffers/FlexBuffers.java
@@ -635,12 +635,16 @@ public class FlexBuffers {
 
     // Stores size in `byte_width_` bytes before end position.
     private static abstract class Sized extends Object {
+
+        private final int size;
+
         Sized(ByteBuffer buff, int end, int byteWidth) {
             super(buff, end, byteWidth);
+            size = readInt(bb, end - byteWidth, byteWidth);
         }
 
         public int size() {
-            return readInt(bb, end - byteWidth, byteWidth);
+            return size;
         }
     }