From kde-devel  Fri Mar 15 07:16:28 2013
From: Thiago Macieira <thiago () kde ! org>
Date: Fri, 15 Mar 2013 07:16:28 +0000
To: kde-devel
Subject: Re: How to gracefully kill a KUniqueApplication and wait for its termination?
Message-Id: <1774858.ScNBijb1Lf () tjmaciei-mobl2>
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On sexta-feira, 15 de mar=E7o de 2013 06.10.37, Ilya Basin wrote:
> Hi list!
> There's such app called bluedevilmonolithic. It goes to background on=

> start.
> Current code to terminate it:
>=20
>   void BlueDevilDaemon::monolithicQuit(QDBusPendingCallWatcher* watch=
er)
>   {
>     // can restart here?
>   }
>=20
>     QDBusMessage msg =3D QDBusMessage::createMethodCall(
>         "org.kde.bluedevilmonolithic",
>         "/MainApplication",
>         "org.kde.KApplication",
>         "quit"
>     );
>     QDBusPendingCall pending =3D QDBusConnection::sessionBus().asyncC=
all(msg);
> QDBusPendingCallWatcher *watcher =3D new QDBusPendingCallWatcher(pend=
ing);
> connect(watcher, SIGNAL(finished(QDBusPendingCallWatcher*)),
> SLOT(monolithicQuit(QDBusPendingCallWatcher*)));
>=20
> Is it too soon to try starting a new instance in monolithicQuit() ?

Yes.

> I don't see a call to QDBusConnectionInterface::unregisterService() i=
n
> kuniqueapplication.cpp. Does it mean that it unregisters only when th=
e
> process dies?

Yes.

Use QDBusServiceWatcher to find out when the name unregisters. You do n=
ot need=20
to wait for the reply to the method call in that case. Just send() it i=
nstead=20
of using asyncCall().

--=20
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel Open Source Technology Center
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358

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