[libvirt-users] event handler

[Michal Privoznik]

On 14.10.2013 02:42, Alexandr wrote:
> good day to all.
> i still have not solved my problem with event handling.
> currently i have following code
> 
> 
> void libvirt_eventloop_thr_func()
> {
>     while(true) //TODO: stop somehow on exit
>     {
>         if(virEventRunDefaultImpl() < 0)
>         {
>             virErrorPtr err = virGetLastError();
>             fprintf(stderr, "Failed to run event loop: %s\n", err &&
> err->message ? err->message : "Unknown error");
>         }
>     }
> }
> 
> 
> 
> ...
> 
>     virSetErrorFunc(NULL, libvirt_error_handler);
>     libvirt_connection = virConnectOpen("qemu:///system");

Move this line ^^^ ...

>     if (virEventRegisterDefaultImpl() < 0)
>     {
>         virErrorPtr err = virGetLastError();
>         fprintf(stderr, "Failed to register event implementation: %s\n",
> err && err->message ? err->message: "Unknown error");
>             return -1;
>     }
>     {
>         int callback =
> virConnectDomainEventRegisterAny(libvirt_connection, NULL,
> VIR_DOMAIN_EVENT_ID_LIFECYCLE,
> VIR_DOMAIN_EVENT_CALLBACK(domain_event_handler), NULL, NULL);
>         if(callback == -1)
>         {
>             std::cout<<"Error: failed to register domain event handle
> callback\n";
>             return -1;
>         }
>     }
> 
>     boost::thread(boost::bind(&libvirt_eventloop_thr_func));

... over here. The virConnectOpen detects if there's an even loop
registered. And in your case you don't have any registered when calling it.

Michal