[packagekit] (no subject)

[Daniel Nicoletti]

Had you take a look on how aptcc handles cancel?
Since zypp is a C++ backend too you can sure
use this way.

First store a pointer in the pk-object to a bool* cancel;
on the pk_cancel() you set cancel = true;
then on the methods you use you do a few checks
if (cancel) { break; } or something...

Best.
 ________________________________
Daniel Nicoletti - KDE Developer
http://dantti.wordpress.com
When a wicked man dies, his hope perishes;
all he expected from his power comes to nothing. Prov. 11:7


>
>De: "Zhang, Qiang Z" <qiang.z.zhang at intel.com>
>Para: "hughsient at gmail.com" <hughsient at gmail.com>
>Cc: "packagekit at lists.freedesktop.org" <packagekit at lists.freedesktop.org>
>Enviadas: Quinta-feira, 16 de Dezembro de 2010 1:01:12
>Assunto: [packagekit] (no subject)
>
>  Hi Richard,
> 
>I want to implemented the cancel API for zypp backend. But have not found the 
>proper way.
> 
>I have reviewed the cancel method of other backends, and found it’s easy to call 
>pk_backend_spawn_kill (spawn) if backend use PkBackendSpawn.
> 
>But for the backend,  which don’t use PkBackendSpawn,  it’s complicated to 
>implemented this transaction cancel method. Such as poldek, which call poldek’s 
>sigint_emit () to cancel transaction and sigint_emit is implemented in poldek 
>but not PackageKit.
> 
>Most of the other backends just set the transaction status and do nothing.
> 
>I think, can PackageKit provide a function pk_backend_thread_cancel in 
>pk-backend.c to send signal to the backend thread, the signal handler in thread 
>can release some resources then call g_thread_exit to exit.
>Then all the backend use thread can call pk_backend_thread_cancel to cancel 
>transaction.
> 
>Or any other method?
> 
> 
>-Thanks
>-Xiaoqiang
> 
>  


      
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