From 34a920e01f39a71e856ecbd9272e03de55cc313d Mon Sep 17 00:00:00 2001
From: Martin Geno <geno+dev@fireorbit.de>
Date: Tue, 7 Mar 2017 18:02:32 +0100
Subject: [PATCH] [BUGFIX] mutex like it should be

---
 meshviewer/graph.go | 2 ++
 runtime/stats.go    | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/meshviewer/graph.go b/meshviewer/graph.go
index dda0d3a..b3ddd84 100644
--- a/meshviewer/graph.go
+++ b/meshviewer/graph.go
@@ -50,7 +50,9 @@ func BuildGraph(nodes *runtime.Nodes) *Graph {
 		vpn:     make(map[string]interface{}),
 	}
 
+	nodes.RLock()
 	builder.readNodes(nodes.List)
+	nodes.RUnlock()
 
 	graph := &Graph{Version: 1}
 	graph.Batadv.Directed = false
diff --git a/runtime/stats.go b/runtime/stats.go
index 423a5f9..a477303 100644
--- a/runtime/stats.go
+++ b/runtime/stats.go
@@ -23,7 +23,7 @@ func NewGlobalStats(nodes *Nodes) (result *GlobalStats) {
 		Models:    make(CounterMap),
 	}
 
-	nodes.Lock()
+	nodes.RLock()
 	for _, node := range nodes.List {
 		if node.Online {
 			result.Nodes++
@@ -42,7 +42,7 @@ func NewGlobalStats(nodes *Nodes) (result *GlobalStats) {
 			}
 		}
 	}
-	nodes.Unlock()
+	nodes.RUnlock()
 	return
 }