From 25e952fb493ceddce89ac314b9e7e0ca521b160f Mon Sep 17 00:00:00 2001
From: Andreas Lauser <and@poware.org>
Date: Mon, 23 Apr 2018 13:16:40 +0200
Subject: [PATCH] tasklets test: guard against garbled output

Use a mutex to ensures that only a single prints at the same
time. this should prevent garbled terminal output and thus makes the
it much easier to read. on the flipside, some race conditions may go
unnoticed.
---
 tests/models/test_tasklets.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/models/test_tasklets.cpp b/tests/models/test_tasklets.cpp
index 31892d2ba..6b8dffb70 100644
--- a/tests/models/test_tasklets.cpp
+++ b/tests/models/test_tasklets.cpp
@@ -33,6 +33,8 @@
 #include <chrono>
 #include <iostream>
 
+std::mutex outputMutex;
+
 Ewoms::TaskletRunner *runner;
 
 class SleepTasklet : public Ewoms::TaskletInterface
@@ -49,7 +51,9 @@ public:
     {
         assert(0 <= runner->workerThreadIndex() && runner->workerThreadIndex() < runner->numWorkerThreads());
         std::this_thread::sleep_for(std::chrono::milliseconds(mseconds_));
+        outputMutex.lock();
         std::cout << "Sleep tasklet " << n_ << " of " << mseconds_ << " ms completed by worker thread " << runner->workerThreadIndex() << std::endl;
+        outputMutex.unlock();
     }
 
 private: