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author | Igor Mammedov <imammedo@redhat.com> | 2014-01-16 17:34:38 +0100 |
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committer | Luiz Capitulino <lcapitulino@redhat.com> | 2014-01-28 12:47:02 -0500 |
commit | 269e09f3fc922b800d118d9c8a721be46b5462a3 (patch) | |
tree | 45a18489d3fa4c2bb54e96f7f26ca9f7f6a0af81 /qom | |
parent | 90e9cf28e57a3e1d6caa0a28b0a332ff982ccb0b (diff) | |
download | hqemu-269e09f3fc922b800d118d9c8a721be46b5462a3.zip hqemu-269e09f3fc922b800d118d9c8a721be46b5462a3.tar.gz |
add optional 2nd stage initialization to -object/object-add commands
Introduces USER_CREATABLE interface that must be implemented by
objects which are designed to created with -object CLI option or
object-add QMP command.
Interface provides an ability to do an optional second stage
initialization of the object created with -object/object-add
commands. By providing complete() callback, which is called
after the object properties were set.
It allows to:
* prevents misusing of -object/object-add by filtering out
objects that are not designed for it.
* generalize second stage backend initialization instead of
adding custom APIs to perform it
* early error detection of backend initialization at -object/
object-add time rather than through a proxy DEVICE object
that tries to use backend.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Diffstat (limited to 'qom')
-rw-r--r-- | qom/Makefile.objs | 1 | ||||
-rw-r--r-- | qom/object_interfaces.c | 32 |
2 files changed, 33 insertions, 0 deletions
diff --git a/qom/Makefile.objs b/qom/Makefile.objs index 6a93ac7..985003b 100644 --- a/qom/Makefile.objs +++ b/qom/Makefile.objs @@ -1,2 +1,3 @@ common-obj-y = object.o container.o qom-qobject.o common-obj-y += cpu.o +common-obj-y += object_interfaces.o diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c new file mode 100644 index 0000000..6360818 --- /dev/null +++ b/qom/object_interfaces.c @@ -0,0 +1,32 @@ +#include "qom/object_interfaces.h" +#include "qemu/module.h" + +void user_creatable_complete(Object *obj, Error **errp) +{ + + UserCreatableClass *ucc; + UserCreatable *uc = + (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); + + if (!uc) { + return; + } + + ucc = USER_CREATABLE_GET_CLASS(uc); + if (ucc->complete) { + ucc->complete(uc, errp); + } +} + +static void register_types(void) +{ + static const TypeInfo uc_interface_info = { + .name = TYPE_USER_CREATABLE, + .parent = TYPE_INTERFACE, + .class_size = sizeof(UserCreatableClass), + }; + + type_register_static(&uc_interface_info); +} + +type_init(register_types) |