How to detect a memory allocation problem

giusloq · Jan 12th 2016, 10:18am

During developing I noticed something strange in the behaviour of emWin libraries. Finally I resolved the problem increasing the amount of memory to emWin through GUI_ALLOC_AssignMemory(). I think there were some memory allocation errors, but it wasn't clear to me.

So my question: is it possible to trigger an error (such as an assertion) when a memory allocation failed?

SEGGER - Jörg · Jan 19th 2016, 3:07pm

Hi,

If GUI_DEBUG_LEVEL is >= 4 the memory allocation module generates a warning:

if ((U32)Size > GUI_ALLOC__Context.NumFreeBytes) {
GUI_DEBUG_WARN("GUI_Alloc.c:\nNot enough memory available in _Alloc().");
return 0;
}

More information can be found in the documentation under GUI_X_ErrorOut(), GUI_X_Warn() and GUI_X_Log().

Regards, Jörg

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