[systemd-devel] sd_bus_process() + sd_bus_wait() is it not suitable for application?

[Cristian Rodríguez]

What do you mean with memory increase ?
sd_bus is unlikely to have any severe memory leak under normal
conditions (if there is any, they are usually found in error paths) so
you are either mis-using the api or misunderstanding memory
management. if there is any memory leak either in your code or in
sd_bus it will be found building both your code and systemd with leak
sanitizer.

On Sat, Jan 22, 2022 at 3:16 AM www <ouyangxuan10 at 163.com> wrote:
>
> Dear all,
>
> When using sd_bus_process() + sd_bus_wait()  to implement the application(Service), call the methods function on the service can obtain the correct information.  Run a certain number of times will lead to insufficient memory and memleak does occur.
>
> It should not be a problem with the DBUS method, because a single call does not increase memory, it needs to call the method 65 ~ 70 times, and you will see the memory increase. After stopping the call, the memory will not decrease. It seems that it has nothing to do with the time interval when the method is called.
>
> code implementation：
> int main()
> {
>     ......
>     r = sd_bus_open_system(&bus);
>     ...
>     r = sd_bus_add_object_vtable(bus, ......);
>     ......
>     r= sd_bus_request_name(bus, "xxx.xx.xx.xxx");
>     ......
>
>     for( ; ; )
>     {
>         r = sd_bus_process(bus, NULL);
>         .......
>         r = sd_bus_wait(bus, -1);
>         ......
>     }
>     sd_bus_slot_unref(slot);
>     sd_bus_unref(bus);
> }
>
> thanks,
> Byron
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