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uxQueueNumber not initialized

Posted by ammaree on August 23, 2015

I am using FreeRTOS v8.2.2 and in my process of building a set of trace macros and routines I have discovered that pxNewQueue->uxQueueNumber is not initialized to a known value (0) in xQueueGenericCreate() around line 375.

The problem showed itself when the traceQUEUE_CREATE() is called immediately afterwards and, expecting the uxQueueNumber to be 0 it returns random values.

Is this a bug or is there some reason behind it?

On a related topic, I also cannot find any functionality to retrieve the queue name from the registry. Any suggestions ?


uxQueueNumber not initialized

Posted by rtel on August 23, 2015

It is an interesting point you raise:

uxQueueNumber is provided purely for use by trace tools, and thus far has been set by the trace code, rather than the RTOS code. You can see the definition of TRACESETOBJECT_NUMBER in FreeRTOS-PlusSourceFreeRTOS-Plus-TraceIncludetrcKernelPort.h. However, perhaps it should be initialised to something - althoug just initialising it to 0 is not going to be helpful and initialising it to anything else might not be correct for whichever library is providing the trace macros.


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