Differences

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--- tools:logger_trace:start [2018/05/25 09:30] – [Enabling and Disabling] graf
+++ tools:logger_trace:start [2018/08/22 11:56] (current) – external edit 127.0.0.1
@@ Line 42: / Line 42: @@
 ===== Concurrent Writing of Trace Data =====
-A trace block, though it will run by the control system, has to be enabled. If so, it will contineously fill its trace buffe
+The example above shows how a trace buffer can be written to a file. This has to be done only after the executor stopped, because the writing usually takes a long time. If you wish to write a trace buffer to a file for further analysis while the application still runs, you can use a ''TraceWriter''. This will do the writing in a separate thread and hence does not block the safety system or control system, see ''examples/controlSystem/traceTest''. In this example the trace buffer gets written to a file every 30 seconds.
+<code cpp>
+  TraceWriter<Vector3> tw(cs.trace2, "/tmp/ctrlData");
+  if (slRunning.getNofActivations() % (int)(30 / period) == 0) { // write to log file every 30s
+    tw.write();
+  }
+</code>
+The name of the trace file will be appended with the current date and time.