object: qom module support
Little helper function to load modules on demand. In most cases adding module loading support for devices and other objects is just s/object_class_by_name/module_object_class_by_name/ in the right spot. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-3-kraxel@redhat.com
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@ -994,6 +994,18 @@ bool object_class_is_abstract(ObjectClass *klass);
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*/
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*/
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ObjectClass *object_class_by_name(const char *typename);
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ObjectClass *object_class_by_name(const char *typename);
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/**
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* module_object_class_by_name:
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* @typename: The QOM typename to obtain the class for.
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*
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* For objects which might be provided by a module. Behaves like
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* object_class_by_name, but additionally tries to load the module
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* needed in case the class is not available.
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*
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* Returns: The class for @typename or %NULL if not found.
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*/
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ObjectClass *module_object_class_by_name(const char *typename);
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void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
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void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
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const char *implements_type, bool include_abstract,
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const char *implements_type, bool include_abstract,
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void *opaque);
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void *opaque);
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14
qom/object.c
14
qom/object.c
@ -985,6 +985,20 @@ ObjectClass *object_class_by_name(const char *typename)
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return type->class;
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return type->class;
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}
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}
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ObjectClass *module_object_class_by_name(const char *typename)
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{
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ObjectClass *oc;
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oc = object_class_by_name(typename);
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#ifdef CONFIG_MODULES
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if (!oc) {
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module_load_qom_one(typename);
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oc = object_class_by_name(typename);
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}
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#endif
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return oc;
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}
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ObjectClass *object_class_get_parent(ObjectClass *class)
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ObjectClass *object_class_get_parent(ObjectClass *class)
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{
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{
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TypeImpl *type = type_get_parent(class->type);
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TypeImpl *type = type_get_parent(class->type);
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