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--- for_developers:thread_safety [2019/11/01 10:11] – Add link to source code kunz
+++ for_developers:thread_safety [2026/04/12 16:50] (current) – [The solution] ursgraf
@@ Line 5: / Line 5: @@
 Concurrency can not be tested by Google Test framework. Therefore, test executables are needed which can be executed manually or via bash scripts.
-To provide an example, a test program testing the Gain block is described below. The full source code is available on GitHub at: https://github.com/eeros-project/eeros-framework/blob/master/examples/development/multithreading.cpp
+To provide an example, a test program testing the Gain block is described below. The full source code is available on GitHub at: https://github.com/eeros-project/eeros-framework/blob/master/examples/devel/multithreading.cpp
-===== The problem =====
+===== The Problem =====
 The following code snipped and image show the issue simulated in the test program. The main thread calls **g1.run()** on the gain object. This method is doing a long calculation. Thread t2 is unfortunately changing the gain by calling **g1.setGain(gM2)** during the main threads calculation. This will finally lead to an unexpected result.
@@ Line 34: / Line 34: @@
-===== The solution =====
+===== The Solution =====
 The Gain block is now implemented thread safe by using the class [[https://en.cppreference.com/w/cpp/thread/lock_guard|lock_guard]] and a [[https://en.cppreference.com/w/cpp/thread/mutex|mutex]]. The code snipped below shows the **setGain()** method as an example.