From 0dcc4f04883cfd87a3cbf814f61c603c7d066399 Mon Sep 17 00:00:00 2001

From: Michael Simacek <msimacek@redhat.com>

Date: Wed, 2 May 2018 15:22:08 +0200

Subject: [PATCH] Avoid presizing arrays

---

 .../common/util/concurrent/AtomicDoubleArray.java    | 12 +++++++-----

 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/guava/src/com/google/common/util/concurrent/AtomicDoubleArray.java b/guava/src/com/google/common/util/concurrent/AtomicDoubleArray.java

index 407cd7c..14d0e48 100644

--- a/guava/src/com/google/common/util/concurrent/AtomicDoubleArray.java

+++ b/guava/src/com/google/common/util/concurrent/AtomicDoubleArray.java

@@ -16,8 +16,12 @@ package com.google.common.util.concurrent;

 import static java.lang.Double.doubleToRawLongBits;

 import static java.lang.Double.longBitsToDouble;

+import java.util.ArrayList;

+import java.util.List;

 import java.util.concurrent.atomic.AtomicLongArray;

+import com.google.common.primitives.Longs;

+

 /**

  * A {@code double} array in which elements may be updated atomically.

  * See the {@link java.util.concurrent.atomic} package specification

@@ -256,13 +260,11 @@ public class AtomicDoubleArray implements java.io.Serializable {

       throws java.io.IOException, ClassNotFoundException {

     s.defaultReadObject();

-    // Read in array length and allocate array

     int length = s.readInt();

-    this.longs = new AtomicLongArray(length);

-

-    // Read in all elements in the proper order.

+    List<Long> builder = new ArrayList<Long>();

     for (int i = 0; i < length; i++) {

-      set(i, s.readDouble());

+      builder.add(doubleToRawLongBits(s.readDouble()));

     }

+    this.longs = new AtomicLongArray(Longs.toArray(builder));

   }

 }

-- 

2.17.0