[haiku-development] restart app_server
- From: Clemens <clemens.zeidler@xxxxxxxxxxxxxx>
- To: "haiku-development@xxxxxxxxxxxxx" <haiku-development@xxxxxxxxxxxxx>
- Date: Sun, 08 Jan 2012 21:14:09 +1300
Hi,
reviving a BBitmap after a app_server restart works but I have some more
problems with BPicture. The data of a BBitmap lives in a shared area and
is cloned on client side, thus the bitmap data survives a app_server
crash. In contrast, the BPicture data, if not downloaded to the client,
stays on server side and goes down with the dying app_server.
Using a shared area for a BPicture is probably not the best solution
because, a) the BPicture has not a fix size and reusing a area for
multiple BPictures becomes complicated b) using a area for each picture
vast a lot of space.
My idea is to store the BPicture record data always on client side. This
can be done by recording the picture first on client side and only sending
the record to the app_server when calling BView::EndPicture. This also
saves all the server calls to record the picture and only one big bunch of
data is send to the server. What do you thing about this?
When looking into BBitmap I noticed that the cloned area is not released
when destroying the bitmap, is this intended? Also the _AssertPointer call
is in my opinion unnecessary, the pointers should be valid when InitCheck
is B_OK. Is this a bug or do I miss something?
thanks,
Clemens
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