[haiku-development] restart app_server
- From: Clemens <clemens.zeidler@xxxxxxxxxxxxxx>
- To: "haiku-development@xxxxxxxxxxxxx" <haiku-development@xxxxxxxxxxxxx>
- Date: Tue, 27 Dec 2011 09:42:50 +1300
Hi,
I just looked into how the app_server can be restarted, e.g. after a
crash. The ability to restart the app_server could also be used to replace
the app_server at runtime without a reboot. This can be handy if you
developing app_server code... Here are my findings:
1. catch the app_server crash in the debug_server
2. restart the app_server
3. send a message to the registrar
4. in the registrar send a message to all apps to reconnect to the new
app_server
5. in BApplication a new connection to the server is created and a remote
ServerApp object is created (AS_CREATE_APP)
6. All BWindows as well as the window's top view are recreated on the
server side.
(maybe better restart the app_server in the registrar in step 4.?)
This basically works as far as I could test it, there are only two more
problems. The bigger problem is that I also have to handle BBitmaps but
there is no list of all BBitmaps on client side. I need this list to
connect all BBitmaps to the server again. My idea is to add a private
locked BBitmap list. A little bit more overhead but I think this should be
ok, right?
However, after reconnecting a BBitmap the content might be lost and I am
not sure if it can be revived. The client clones the bitmap area thus it
should still be there and could be reused (?). Does this also works if
this area is mapped to a real graphics card?
Another problem is that I don't get keyboard and mouse input after a
restart. Anybody knows how to make this working again or why it is not
working?
thanks,
Clemens
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