Quoting Eduardo Habkost (2015-04-29 07:55:48) > On Wed, Apr 29, 2015 at 08:38:02AM -0400, Luiz Capitulino wrote: > > On Mon, 27 Apr 2015 14:23:20 -0300 > > Eduardo Habkost <ehabk...@redhat.com> wrote: > > > > > On Sat, Apr 25, 2015 at 07:05:55PM +0200, Andreas Färber wrote: > > > > Am 25.04.2015 um 17:28 schrieb Eduardo Habkost: > > > > > The QJSON code used casts to (QJSON*) directly, instead of > > > > > OBJECT_CHECK. > > > > > There were even some functions using object_dynamic_cast() calls > > > > > followed by assert(), which is exactly what OBJECT_CHECK does (by > > > > > calling object_dynamic_cast_assert()). > > > > > > > > Suggest s/OBJECT_CHECK/OBJECT_CHECK()/g everywhere for clarity. > > > > Everywhere? You mean, in other places? In this case someone has to > > post a different patch. > > Just in the commit message. > > > > > > I assume it can be fixed during commit by whoever is going to queue it. > > > > > > > > > > > > > > > > > Signed-off-by: Eduardo Habkost <ehabk...@redhat.com> > > > > > --- > > > > > qjson.c | 10 +++++----- > > > > > 1 file changed, 5 insertions(+), 5 deletions(-) > > > > > > > > Reviewed-by: Andreas Färber <afaer...@suse.de> > > > > > > > > Wasn't aware QJSON is using QOM - assuming this will go through some > > > > QAPI/QMP tree. > > > > > > The only user of qjson.c right now is migration code. Should it go through > > > the migration tree? > > > > It could be, but I can take it if nobody does. > > Thanks! > > > > > > Also, why do we have two JSON writers in QEMU? And why do they have > > > exactly the same name? > > > > Not sure I got it, which writers? > > qjson.c and qobject/qjson.c:to_json().
I'm guessing it's to avoid the need to build up a QObject throughout the migration code, as opposed to just serializing metadata/vmstate fields directly to string. Does make me wonder though why we don't just use visit_type_{int,etc}() interfaces to build up the QObject through a QMPOutputVisitor, then feed the resulting QObject through the existing qobject/qjson.c code. > > -- > Eduardo >