Re: Memory leak when drawing with pangomm/cairomm (MSYS2)

Den 2021-06-22 kl. 13:38, skrev 廖骏轩 via gtkmm-list:
> I have just found out that the Windows version of my project has a massive memory leak, while on Linux it seems alright. It uses pangomm and cairomm to display text, and I believe it’s similar to the examples in the online book, “Programming with gtkmm4”. queue_draw() is called every 100 ms, and in a few minutes, the memory usage would reach several GB. If I don’t call queue_draw(), the memory used stays around 100 MB.
> Does anyone know what caused the memory leak? Thanks！

I don't know what caused the memory leak, but I'd like to give you a few 
suggestions for trouble-shooting.

The C++ bindings (gtkmm, pangomm, etc.) have no or extremely little code 
that's not identical on Windows and Linux. In the first place, suspect 
one of the underlying C modules (gtk, pango, etc.).

Do you know if there's a similar memory leak with gtkmm3? If there's no 
memory leak with gtkmm3, suspect gtk4.

Remove more and more of the code, possibly until there's nothing left to 
draw for queue_draw(). If the memory leak disappears at some step, you 
may have found the function that leaks memory.

Is valgrind or a similar memory analyzer available on Windows? If so, it 
can probably tell you who allocates a huge amount of memory.

_______________________________________________
gtkmm-list mailing list
[email protected]
https://mail.gnome.org/mailman/listinfo/gtkmm-list