On 09/07/2016 04:23 PM, Mike Jackson wrote:
We are attempting to track down a memory leak that we _think_ we have. We have
reduced our code to the point where all we do is invoke a new QWidget instance,
show() it, hide() it and then delete it. We do this in a loop 100 times. We
monitor the memory use before and after the loop using OS X's Activity monitor.
At the end of the loop there is more memory being used than before the loop, by
about 2~3MB worth.
My question is: Is this normal for a Qt Application to retain some memory for
each QWidget through global variables and such? Is it something in OS X 10.10?
Thanks to anyone who can shed a little light on this for us. Oh. This is with Qt
5.6.1-1 on OS X 10.10.5. We also notice this on Windows 10 with the same version
of Qt.
You should add valgrind to your toolbox.
Valgrind can track memory usage and note leaks.
Thanks
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