From c2550d72aee371676d2f09316051567681e53a7c Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Mon, 26 Mar 2012 22:05:04 -0700
Subject: [PATCH] altosui: Use ConcurrentHashMap for maps

This data structure is accessed by multiple threads, so it needs to be
re-entrant.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 altosui/AltosSiteMap.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/altosui/AltosSiteMap.java b/altosui/AltosSiteMap.java
index c258b3e5..63995c40 100644
--- a/altosui/AltosSiteMap.java
+++ b/altosui/AltosSiteMap.java
@@ -31,6 +31,7 @@ import java.util.prefs.*;
 import java.lang.Math;
 import java.awt.geom.Point2D;
 import java.awt.geom.Line2D;
+import java.util.concurrent.*;
 
 public class AltosSiteMap extends JScrollPane implements AltosFlightDisplay {
 	// preferred vertical step in a tile in naut. miles
@@ -110,7 +111,7 @@ public class AltosSiteMap extends JScrollPane implements AltosFlightDisplay {
 		return latlng(pt, scale_x, scale_y);
 	}
 
-	HashMap<Point,AltosSiteMapTile> mapTiles = new HashMap<Point,AltosSiteMapTile>();
+	ConcurrentHashMap<Point,AltosSiteMapTile> mapTiles = new ConcurrentHashMap<Point,AltosSiteMapTile>();
 	Point2D.Double centre;
 
 	private Point2D.Double tileCoordOffset(Point p) {
-- 
2.30.2