ui: add fix for GTK Pause key handling on Win32
[qemu/ar7.git] / qom / object.c
blobc58c52d518b16da2db93feee27e1633b1fc572d1
1 /*
2 * QEMU Object Model
4 * Copyright IBM, Corp. 2011
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
13 #include "qemu/osdep.h"
14 #include "qapi/error.h"
15 #include "qom/object.h"
16 #include "qom/object_interfaces.h"
17 #include "qemu/cutils.h"
18 #include "qapi/visitor.h"
19 #include "qapi-visit.h"
20 #include "qapi/string-input-visitor.h"
21 #include "qapi/string-output-visitor.h"
22 #include "qapi/qmp/qerror.h"
23 #include "trace.h"
25 /* TODO: replace QObject with a simpler visitor to avoid a dependency
26 * of the QOM core on QObject? */
27 #include "qom/qom-qobject.h"
28 #include "qapi/qmp/qobject.h"
29 #include "qapi/qmp/qbool.h"
30 #include "qapi/qmp/qstring.h"
32 #define MAX_INTERFACES 32
34 typedef struct InterfaceImpl InterfaceImpl;
35 typedef struct TypeImpl TypeImpl;
37 struct InterfaceImpl
39 const char *typename;
42 struct TypeImpl
44 const char *name;
46 size_t class_size;
48 size_t instance_size;
50 void (*class_init)(ObjectClass *klass, void *data);
51 void (*class_base_init)(ObjectClass *klass, void *data);
52 void (*class_finalize)(ObjectClass *klass, void *data);
54 void *class_data;
56 void (*instance_init)(Object *obj);
57 void (*instance_post_init)(Object *obj);
58 void (*instance_finalize)(Object *obj);
60 bool abstract;
62 const char *parent;
63 TypeImpl *parent_type;
65 ObjectClass *class;
67 int num_interfaces;
68 InterfaceImpl interfaces[MAX_INTERFACES];
71 static Type type_interface;
73 static GHashTable *type_table_get(void)
75 static GHashTable *type_table;
77 if (type_table == NULL) {
78 type_table = g_hash_table_new(g_str_hash, g_str_equal);
81 return type_table;
84 static bool enumerating_types;
86 static void type_table_add(TypeImpl *ti)
88 assert(!enumerating_types);
89 g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
92 static TypeImpl *type_table_lookup(const char *name)
94 return g_hash_table_lookup(type_table_get(), name);
97 static TypeImpl *type_new(const TypeInfo *info)
99 TypeImpl *ti = g_malloc0(sizeof(*ti));
100 int i;
102 g_assert(info->name != NULL);
104 if (type_table_lookup(info->name) != NULL) {
105 fprintf(stderr, "Registering `%s' which already exists\n", info->name);
106 abort();
109 ti->name = g_strdup(info->name);
110 ti->parent = g_strdup(info->parent);
112 ti->class_size = info->class_size;
113 ti->instance_size = info->instance_size;
115 ti->class_init = info->class_init;
116 ti->class_base_init = info->class_base_init;
117 ti->class_finalize = info->class_finalize;
118 ti->class_data = info->class_data;
120 ti->instance_init = info->instance_init;
121 ti->instance_post_init = info->instance_post_init;
122 ti->instance_finalize = info->instance_finalize;
124 ti->abstract = info->abstract;
126 for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
127 ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
129 ti->num_interfaces = i;
131 return ti;
134 static TypeImpl *type_register_internal(const TypeInfo *info)
136 TypeImpl *ti;
137 ti = type_new(info);
139 type_table_add(ti);
140 return ti;
143 TypeImpl *type_register(const TypeInfo *info)
145 assert(info->parent);
146 return type_register_internal(info);
149 TypeImpl *type_register_static(const TypeInfo *info)
151 return type_register(info);
154 void type_register_static_array(const TypeInfo *infos, int nr_infos)
156 int i;
158 for (i = 0; i < nr_infos; i++) {
159 type_register_static(&infos[i]);
163 static TypeImpl *type_get_by_name(const char *name)
165 if (name == NULL) {
166 return NULL;
169 return type_table_lookup(name);
172 static TypeImpl *type_get_parent(TypeImpl *type)
174 if (!type->parent_type && type->parent) {
175 type->parent_type = type_get_by_name(type->parent);
176 g_assert(type->parent_type != NULL);
179 return type->parent_type;
182 static bool type_has_parent(TypeImpl *type)
184 return (type->parent != NULL);
187 static size_t type_class_get_size(TypeImpl *ti)
189 if (ti->class_size) {
190 return ti->class_size;
193 if (type_has_parent(ti)) {
194 return type_class_get_size(type_get_parent(ti));
197 return sizeof(ObjectClass);
200 static size_t type_object_get_size(TypeImpl *ti)
202 if (ti->instance_size) {
203 return ti->instance_size;
206 if (type_has_parent(ti)) {
207 return type_object_get_size(type_get_parent(ti));
210 return 0;
213 size_t object_type_get_instance_size(const char *typename)
215 TypeImpl *type = type_get_by_name(typename);
217 g_assert(type != NULL);
218 return type_object_get_size(type);
221 static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
223 assert(target_type);
225 /* Check if target_type is a direct ancestor of type */
226 while (type) {
227 if (type == target_type) {
228 return true;
231 type = type_get_parent(type);
234 return false;
237 static void type_initialize(TypeImpl *ti);
239 static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type,
240 TypeImpl *parent_type)
242 InterfaceClass *new_iface;
243 TypeInfo info = { };
244 TypeImpl *iface_impl;
246 info.parent = parent_type->name;
247 info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name);
248 info.abstract = true;
250 iface_impl = type_new(&info);
251 iface_impl->parent_type = parent_type;
252 type_initialize(iface_impl);
253 g_free((char *)info.name);
255 new_iface = (InterfaceClass *)iface_impl->class;
256 new_iface->concrete_class = ti->class;
257 new_iface->interface_type = interface_type;
259 ti->class->interfaces = g_slist_append(ti->class->interfaces,
260 iface_impl->class);
263 static void object_property_free(gpointer data)
265 ObjectProperty *prop = data;
267 g_free(prop->name);
268 g_free(prop->type);
269 g_free(prop->description);
270 g_free(prop);
273 static void type_initialize(TypeImpl *ti)
275 TypeImpl *parent;
277 if (ti->class) {
278 return;
281 ti->class_size = type_class_get_size(ti);
282 ti->instance_size = type_object_get_size(ti);
283 /* Any type with zero instance_size is implicitly abstract.
284 * This means interface types are all abstract.
286 if (ti->instance_size == 0) {
287 ti->abstract = true;
290 ti->class = g_malloc0(ti->class_size);
292 parent = type_get_parent(ti);
293 if (parent) {
294 type_initialize(parent);
295 GSList *e;
296 int i;
298 g_assert_cmpint(parent->class_size, <=, ti->class_size);
299 memcpy(ti->class, parent->class, parent->class_size);
300 ti->class->interfaces = NULL;
301 ti->class->properties = g_hash_table_new_full(
302 g_str_hash, g_str_equal, g_free, object_property_free);
304 for (e = parent->class->interfaces; e; e = e->next) {
305 InterfaceClass *iface = e->data;
306 ObjectClass *klass = OBJECT_CLASS(iface);
308 type_initialize_interface(ti, iface->interface_type, klass->type);
311 for (i = 0; i < ti->num_interfaces; i++) {
312 TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
313 for (e = ti->class->interfaces; e; e = e->next) {
314 TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
316 if (type_is_ancestor(target_type, t)) {
317 break;
321 if (e) {
322 continue;
325 type_initialize_interface(ti, t, t);
327 } else {
328 ti->class->properties = g_hash_table_new_full(
329 g_str_hash, g_str_equal, g_free, object_property_free);
332 ti->class->type = ti;
334 while (parent) {
335 if (parent->class_base_init) {
336 parent->class_base_init(ti->class, ti->class_data);
338 parent = type_get_parent(parent);
341 if (ti->class_init) {
342 ti->class_init(ti->class, ti->class_data);
346 static void object_init_with_type(Object *obj, TypeImpl *ti)
348 if (type_has_parent(ti)) {
349 object_init_with_type(obj, type_get_parent(ti));
352 if (ti->instance_init) {
353 ti->instance_init(obj);
357 static void object_post_init_with_type(Object *obj, TypeImpl *ti)
359 if (ti->instance_post_init) {
360 ti->instance_post_init(obj);
363 if (type_has_parent(ti)) {
364 object_post_init_with_type(obj, type_get_parent(ti));
368 static void object_initialize_with_type(void *data, size_t size, TypeImpl *type)
370 Object *obj = data;
372 g_assert(type != NULL);
373 type_initialize(type);
375 g_assert_cmpint(type->instance_size, >=, sizeof(Object));
376 g_assert(type->abstract == false);
377 g_assert_cmpint(size, >=, type->instance_size);
379 memset(obj, 0, type->instance_size);
380 obj->class = type->class;
381 object_ref(obj);
382 obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
383 NULL, object_property_free);
384 object_init_with_type(obj, type);
385 object_post_init_with_type(obj, type);
388 void object_initialize(void *data, size_t size, const char *typename)
390 TypeImpl *type = type_get_by_name(typename);
392 object_initialize_with_type(data, size, type);
395 static inline bool object_property_is_child(ObjectProperty *prop)
397 return strstart(prop->type, "child<", NULL);
400 static void object_property_del_all(Object *obj)
402 ObjectProperty *prop;
403 GHashTableIter iter;
404 gpointer key, value;
405 bool released;
407 do {
408 released = false;
409 g_hash_table_iter_init(&iter, obj->properties);
410 while (g_hash_table_iter_next(&iter, &key, &value)) {
411 prop = value;
412 if (prop->release) {
413 prop->release(obj, prop->name, prop->opaque);
414 prop->release = NULL;
415 released = true;
416 break;
418 g_hash_table_iter_remove(&iter);
420 } while (released);
422 g_hash_table_unref(obj->properties);
425 static void object_property_del_child(Object *obj, Object *child, Error **errp)
427 ObjectProperty *prop;
428 GHashTableIter iter;
429 gpointer key, value;
431 g_hash_table_iter_init(&iter, obj->properties);
432 while (g_hash_table_iter_next(&iter, &key, &value)) {
433 prop = value;
434 if (object_property_is_child(prop) && prop->opaque == child) {
435 if (prop->release) {
436 prop->release(obj, prop->name, prop->opaque);
437 prop->release = NULL;
439 break;
442 g_hash_table_iter_init(&iter, obj->properties);
443 while (g_hash_table_iter_next(&iter, &key, &value)) {
444 prop = value;
445 if (object_property_is_child(prop) && prop->opaque == child) {
446 g_hash_table_iter_remove(&iter);
447 break;
452 void object_unparent(Object *obj)
454 if (obj->parent) {
455 object_property_del_child(obj->parent, obj, NULL);
459 static void object_deinit(Object *obj, TypeImpl *type)
461 if (type->instance_finalize) {
462 type->instance_finalize(obj);
465 if (type_has_parent(type)) {
466 object_deinit(obj, type_get_parent(type));
470 static void object_finalize(void *data)
472 Object *obj = data;
473 TypeImpl *ti = obj->class->type;
475 object_property_del_all(obj);
476 object_deinit(obj, ti);
478 g_assert_cmpint(obj->ref, ==, 0);
479 if (obj->free) {
480 obj->free(obj);
484 static Object *object_new_with_type(Type type)
486 Object *obj;
488 g_assert(type != NULL);
489 type_initialize(type);
491 obj = g_malloc(type->instance_size);
492 object_initialize_with_type(obj, type->instance_size, type);
493 obj->free = g_free;
495 return obj;
498 Object *object_new(const char *typename)
500 TypeImpl *ti = type_get_by_name(typename);
502 return object_new_with_type(ti);
506 Object *object_new_with_props(const char *typename,
507 Object *parent,
508 const char *id,
509 Error **errp,
510 ...)
512 va_list vargs;
513 Object *obj;
515 va_start(vargs, errp);
516 obj = object_new_with_propv(typename, parent, id, errp, vargs);
517 va_end(vargs);
519 return obj;
523 Object *object_new_with_propv(const char *typename,
524 Object *parent,
525 const char *id,
526 Error **errp,
527 va_list vargs)
529 Object *obj;
530 ObjectClass *klass;
531 Error *local_err = NULL;
533 klass = object_class_by_name(typename);
534 if (!klass) {
535 error_setg(errp, "invalid object type: %s", typename);
536 return NULL;
539 if (object_class_is_abstract(klass)) {
540 error_setg(errp, "object type '%s' is abstract", typename);
541 return NULL;
543 obj = object_new(typename);
545 if (object_set_propv(obj, &local_err, vargs) < 0) {
546 goto error;
549 object_property_add_child(parent, id, obj, &local_err);
550 if (local_err) {
551 goto error;
554 if (object_dynamic_cast(obj, TYPE_USER_CREATABLE)) {
555 user_creatable_complete(obj, &local_err);
556 if (local_err) {
557 object_unparent(obj);
558 goto error;
562 object_unref(OBJECT(obj));
563 return obj;
565 error:
566 error_propagate(errp, local_err);
567 object_unref(obj);
568 return NULL;
572 int object_set_props(Object *obj,
573 Error **errp,
574 ...)
576 va_list vargs;
577 int ret;
579 va_start(vargs, errp);
580 ret = object_set_propv(obj, errp, vargs);
581 va_end(vargs);
583 return ret;
587 int object_set_propv(Object *obj,
588 Error **errp,
589 va_list vargs)
591 const char *propname;
592 Error *local_err = NULL;
594 propname = va_arg(vargs, char *);
595 while (propname != NULL) {
596 const char *value = va_arg(vargs, char *);
598 g_assert(value != NULL);
599 object_property_parse(obj, value, propname, &local_err);
600 if (local_err) {
601 error_propagate(errp, local_err);
602 return -1;
604 propname = va_arg(vargs, char *);
607 return 0;
611 Object *object_dynamic_cast(Object *obj, const char *typename)
613 if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
614 return obj;
617 return NULL;
620 Object *object_dynamic_cast_assert(Object *obj, const char *typename,
621 const char *file, int line, const char *func)
623 trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
624 typename, file, line, func);
626 #ifdef CONFIG_QOM_CAST_DEBUG
627 int i;
628 Object *inst;
630 for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
631 if (atomic_read(&obj->class->object_cast_cache[i]) == typename) {
632 goto out;
636 inst = object_dynamic_cast(obj, typename);
638 if (!inst && obj) {
639 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
640 file, line, func, obj, typename);
641 abort();
644 assert(obj == inst);
646 if (obj && obj == inst) {
647 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
648 atomic_set(&obj->class->object_cast_cache[i - 1],
649 atomic_read(&obj->class->object_cast_cache[i]));
651 atomic_set(&obj->class->object_cast_cache[i - 1], typename);
654 out:
655 #endif
656 return obj;
659 ObjectClass *object_class_dynamic_cast(ObjectClass *class,
660 const char *typename)
662 ObjectClass *ret = NULL;
663 TypeImpl *target_type;
664 TypeImpl *type;
666 if (!class) {
667 return NULL;
670 /* A simple fast path that can trigger a lot for leaf classes. */
671 type = class->type;
672 if (type->name == typename) {
673 return class;
676 target_type = type_get_by_name(typename);
677 if (!target_type) {
678 /* target class type unknown, so fail the cast */
679 return NULL;
682 if (type->class->interfaces &&
683 type_is_ancestor(target_type, type_interface)) {
684 int found = 0;
685 GSList *i;
687 for (i = class->interfaces; i; i = i->next) {
688 ObjectClass *target_class = i->data;
690 if (type_is_ancestor(target_class->type, target_type)) {
691 ret = target_class;
692 found++;
696 /* The match was ambiguous, don't allow a cast */
697 if (found > 1) {
698 ret = NULL;
700 } else if (type_is_ancestor(type, target_type)) {
701 ret = class;
704 return ret;
707 ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
708 const char *typename,
709 const char *file, int line,
710 const char *func)
712 ObjectClass *ret;
714 trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
715 typename, file, line, func);
717 #ifdef CONFIG_QOM_CAST_DEBUG
718 int i;
720 for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) {
721 if (atomic_read(&class->class_cast_cache[i]) == typename) {
722 ret = class;
723 goto out;
726 #else
727 if (!class || !class->interfaces) {
728 return class;
730 #endif
732 ret = object_class_dynamic_cast(class, typename);
733 if (!ret && class) {
734 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
735 file, line, func, class, typename);
736 abort();
739 #ifdef CONFIG_QOM_CAST_DEBUG
740 if (class && ret == class) {
741 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
742 atomic_set(&class->class_cast_cache[i - 1],
743 atomic_read(&class->class_cast_cache[i]));
745 atomic_set(&class->class_cast_cache[i - 1], typename);
747 out:
748 #endif
749 return ret;
752 const char *object_get_typename(const Object *obj)
754 return obj->class->type->name;
757 ObjectClass *object_get_class(Object *obj)
759 return obj->class;
762 bool object_class_is_abstract(ObjectClass *klass)
764 return klass->type->abstract;
767 const char *object_class_get_name(ObjectClass *klass)
769 return klass->type->name;
772 ObjectClass *object_class_by_name(const char *typename)
774 TypeImpl *type = type_get_by_name(typename);
776 if (!type) {
777 return NULL;
780 type_initialize(type);
782 return type->class;
785 ObjectClass *object_class_get_parent(ObjectClass *class)
787 TypeImpl *type = type_get_parent(class->type);
789 if (!type) {
790 return NULL;
793 type_initialize(type);
795 return type->class;
798 typedef struct OCFData
800 void (*fn)(ObjectClass *klass, void *opaque);
801 const char *implements_type;
802 bool include_abstract;
803 void *opaque;
804 } OCFData;
806 static void object_class_foreach_tramp(gpointer key, gpointer value,
807 gpointer opaque)
809 OCFData *data = opaque;
810 TypeImpl *type = value;
811 ObjectClass *k;
813 type_initialize(type);
814 k = type->class;
816 if (!data->include_abstract && type->abstract) {
817 return;
820 if (data->implements_type &&
821 !object_class_dynamic_cast(k, data->implements_type)) {
822 return;
825 data->fn(k, data->opaque);
828 void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
829 const char *implements_type, bool include_abstract,
830 void *opaque)
832 OCFData data = { fn, implements_type, include_abstract, opaque };
834 enumerating_types = true;
835 g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
836 enumerating_types = false;
839 static int do_object_child_foreach(Object *obj,
840 int (*fn)(Object *child, void *opaque),
841 void *opaque, bool recurse)
843 GHashTableIter iter;
844 ObjectProperty *prop;
845 int ret = 0;
847 g_hash_table_iter_init(&iter, obj->properties);
848 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
849 if (object_property_is_child(prop)) {
850 Object *child = prop->opaque;
852 ret = fn(child, opaque);
853 if (ret != 0) {
854 break;
856 if (recurse) {
857 do_object_child_foreach(child, fn, opaque, true);
861 return ret;
864 int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
865 void *opaque)
867 return do_object_child_foreach(obj, fn, opaque, false);
870 int object_child_foreach_recursive(Object *obj,
871 int (*fn)(Object *child, void *opaque),
872 void *opaque)
874 return do_object_child_foreach(obj, fn, opaque, true);
877 static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
879 GSList **list = opaque;
881 *list = g_slist_prepend(*list, klass);
884 GSList *object_class_get_list(const char *implements_type,
885 bool include_abstract)
887 GSList *list = NULL;
889 object_class_foreach(object_class_get_list_tramp,
890 implements_type, include_abstract, &list);
891 return list;
894 void object_ref(Object *obj)
896 if (!obj) {
897 return;
899 atomic_inc(&obj->ref);
902 void object_unref(Object *obj)
904 if (!obj) {
905 return;
907 g_assert_cmpint(obj->ref, >, 0);
909 /* parent always holds a reference to its children */
910 if (atomic_fetch_dec(&obj->ref) == 1) {
911 object_finalize(obj);
915 ObjectProperty *
916 object_property_add(Object *obj, const char *name, const char *type,
917 ObjectPropertyAccessor *get,
918 ObjectPropertyAccessor *set,
919 ObjectPropertyRelease *release,
920 void *opaque, Error **errp)
922 ObjectProperty *prop;
923 size_t name_len = strlen(name);
925 if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) {
926 int i;
927 ObjectProperty *ret;
928 char *name_no_array = g_strdup(name);
930 name_no_array[name_len - 3] = '\0';
931 for (i = 0; ; ++i) {
932 char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
934 ret = object_property_add(obj, full_name, type, get, set,
935 release, opaque, NULL);
936 g_free(full_name);
937 if (ret) {
938 break;
941 g_free(name_no_array);
942 return ret;
945 if (object_property_find(obj, name, NULL) != NULL) {
946 error_setg(errp, "attempt to add duplicate property '%s'"
947 " to object (type '%s')", name,
948 object_get_typename(obj));
949 return NULL;
952 prop = g_malloc0(sizeof(*prop));
954 prop->name = g_strdup(name);
955 prop->type = g_strdup(type);
957 prop->get = get;
958 prop->set = set;
959 prop->release = release;
960 prop->opaque = opaque;
962 g_hash_table_insert(obj->properties, prop->name, prop);
963 return prop;
966 ObjectProperty *
967 object_class_property_add(ObjectClass *klass,
968 const char *name,
969 const char *type,
970 ObjectPropertyAccessor *get,
971 ObjectPropertyAccessor *set,
972 ObjectPropertyRelease *release,
973 void *opaque,
974 Error **errp)
976 ObjectProperty *prop;
978 if (object_class_property_find(klass, name, NULL) != NULL) {
979 error_setg(errp, "attempt to add duplicate property '%s'"
980 " to object (type '%s')", name,
981 object_class_get_name(klass));
982 return NULL;
985 prop = g_malloc0(sizeof(*prop));
987 prop->name = g_strdup(name);
988 prop->type = g_strdup(type);
990 prop->get = get;
991 prop->set = set;
992 prop->release = release;
993 prop->opaque = opaque;
995 g_hash_table_insert(klass->properties, g_strdup(name), prop);
997 return prop;
1000 ObjectProperty *object_property_find(Object *obj, const char *name,
1001 Error **errp)
1003 ObjectProperty *prop;
1004 ObjectClass *klass = object_get_class(obj);
1006 prop = object_class_property_find(klass, name, NULL);
1007 if (prop) {
1008 return prop;
1011 prop = g_hash_table_lookup(obj->properties, name);
1012 if (prop) {
1013 return prop;
1016 error_setg(errp, "Property '.%s' not found", name);
1017 return NULL;
1020 void object_property_iter_init(ObjectPropertyIterator *iter,
1021 Object *obj)
1023 g_hash_table_iter_init(&iter->iter, obj->properties);
1024 iter->nextclass = object_get_class(obj);
1027 ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter)
1029 gpointer key, val;
1030 while (!g_hash_table_iter_next(&iter->iter, &key, &val)) {
1031 if (!iter->nextclass) {
1032 return NULL;
1034 g_hash_table_iter_init(&iter->iter, iter->nextclass->properties);
1035 iter->nextclass = object_class_get_parent(iter->nextclass);
1037 return val;
1040 ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name,
1041 Error **errp)
1043 ObjectProperty *prop;
1044 ObjectClass *parent_klass;
1046 parent_klass = object_class_get_parent(klass);
1047 if (parent_klass) {
1048 prop = object_class_property_find(parent_klass, name, NULL);
1049 if (prop) {
1050 return prop;
1054 prop = g_hash_table_lookup(klass->properties, name);
1055 if (!prop) {
1056 error_setg(errp, "Property '.%s' not found", name);
1058 return prop;
1061 void object_property_del(Object *obj, const char *name, Error **errp)
1063 ObjectProperty *prop = g_hash_table_lookup(obj->properties, name);
1065 if (!prop) {
1066 error_setg(errp, "Property '.%s' not found", name);
1067 return;
1070 if (prop->release) {
1071 prop->release(obj, name, prop->opaque);
1073 g_hash_table_remove(obj->properties, name);
1076 void object_property_get(Object *obj, Visitor *v, const char *name,
1077 Error **errp)
1079 ObjectProperty *prop = object_property_find(obj, name, errp);
1080 if (prop == NULL) {
1081 return;
1084 if (!prop->get) {
1085 error_setg(errp, QERR_PERMISSION_DENIED);
1086 } else {
1087 prop->get(obj, v, name, prop->opaque, errp);
1091 void object_property_set(Object *obj, Visitor *v, const char *name,
1092 Error **errp)
1094 ObjectProperty *prop = object_property_find(obj, name, errp);
1095 if (prop == NULL) {
1096 return;
1099 if (!prop->set) {
1100 error_setg(errp, QERR_PERMISSION_DENIED);
1101 } else {
1102 prop->set(obj, v, name, prop->opaque, errp);
1106 void object_property_set_str(Object *obj, const char *value,
1107 const char *name, Error **errp)
1109 QString *qstr = qstring_from_str(value);
1110 object_property_set_qobject(obj, QOBJECT(qstr), name, errp);
1112 QDECREF(qstr);
1115 char *object_property_get_str(Object *obj, const char *name,
1116 Error **errp)
1118 QObject *ret = object_property_get_qobject(obj, name, errp);
1119 QString *qstring;
1120 char *retval;
1122 if (!ret) {
1123 return NULL;
1125 qstring = qobject_to_qstring(ret);
1126 if (!qstring) {
1127 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
1128 retval = NULL;
1129 } else {
1130 retval = g_strdup(qstring_get_str(qstring));
1133 qobject_decref(ret);
1134 return retval;
1137 void object_property_set_link(Object *obj, Object *value,
1138 const char *name, Error **errp)
1140 if (value) {
1141 gchar *path = object_get_canonical_path(value);
1142 object_property_set_str(obj, path, name, errp);
1143 g_free(path);
1144 } else {
1145 object_property_set_str(obj, "", name, errp);
1149 Object *object_property_get_link(Object *obj, const char *name,
1150 Error **errp)
1152 char *str = object_property_get_str(obj, name, errp);
1153 Object *target = NULL;
1155 if (str && *str) {
1156 target = object_resolve_path(str, NULL);
1157 if (!target) {
1158 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1159 "Device '%s' not found", str);
1163 g_free(str);
1164 return target;
1167 void object_property_set_bool(Object *obj, bool value,
1168 const char *name, Error **errp)
1170 QBool *qbool = qbool_from_bool(value);
1171 object_property_set_qobject(obj, QOBJECT(qbool), name, errp);
1173 QDECREF(qbool);
1176 bool object_property_get_bool(Object *obj, const char *name,
1177 Error **errp)
1179 QObject *ret = object_property_get_qobject(obj, name, errp);
1180 QBool *qbool;
1181 bool retval;
1183 if (!ret) {
1184 return false;
1186 qbool = qobject_to_qbool(ret);
1187 if (!qbool) {
1188 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
1189 retval = false;
1190 } else {
1191 retval = qbool_get_bool(qbool);
1194 qobject_decref(ret);
1195 return retval;
1198 void object_property_set_int(Object *obj, int64_t value,
1199 const char *name, Error **errp)
1201 QNum *qnum = qnum_from_int(value);
1202 object_property_set_qobject(obj, QOBJECT(qnum), name, errp);
1204 QDECREF(qnum);
1207 int64_t object_property_get_int(Object *obj, const char *name,
1208 Error **errp)
1210 QObject *ret = object_property_get_qobject(obj, name, errp);
1211 QNum *qnum;
1212 int64_t retval;
1214 if (!ret) {
1215 return -1;
1218 qnum = qobject_to_qnum(ret);
1219 if (!qnum || !qnum_get_try_int(qnum, &retval)) {
1220 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
1221 retval = -1;
1224 qobject_decref(ret);
1225 return retval;
1228 void object_property_set_uint(Object *obj, uint64_t value,
1229 const char *name, Error **errp)
1231 QNum *qnum = qnum_from_uint(value);
1233 object_property_set_qobject(obj, QOBJECT(qnum), name, errp);
1234 QDECREF(qnum);
1237 uint64_t object_property_get_uint(Object *obj, const char *name,
1238 Error **errp)
1240 QObject *ret = object_property_get_qobject(obj, name, errp);
1241 QNum *qnum;
1242 uint64_t retval;
1244 if (!ret) {
1245 return 0;
1247 qnum = qobject_to_qnum(ret);
1248 if (!qnum || !qnum_get_try_uint(qnum, &retval)) {
1249 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint");
1250 retval = 0;
1253 qobject_decref(ret);
1254 return retval;
1257 typedef struct EnumProperty {
1258 const QEnumLookup *lookup;
1259 int (*get)(Object *, Error **);
1260 void (*set)(Object *, int, Error **);
1261 } EnumProperty;
1263 int object_property_get_enum(Object *obj, const char *name,
1264 const char *typename, Error **errp)
1266 Error *err = NULL;
1267 Visitor *v;
1268 char *str;
1269 int ret;
1270 ObjectProperty *prop = object_property_find(obj, name, errp);
1271 EnumProperty *enumprop;
1273 if (prop == NULL) {
1274 return 0;
1277 if (!g_str_equal(prop->type, typename)) {
1278 error_setg(errp, "Property %s on %s is not '%s' enum type",
1279 name, object_class_get_name(
1280 object_get_class(obj)), typename);
1281 return 0;
1284 enumprop = prop->opaque;
1286 v = string_output_visitor_new(false, &str);
1287 object_property_get(obj, v, name, &err);
1288 if (err) {
1289 error_propagate(errp, err);
1290 visit_free(v);
1291 return 0;
1293 visit_complete(v, &str);
1294 visit_free(v);
1295 v = string_input_visitor_new(str);
1296 visit_type_enum(v, name, &ret, enumprop->lookup, errp);
1298 g_free(str);
1299 visit_free(v);
1301 return ret;
1304 void object_property_get_uint16List(Object *obj, const char *name,
1305 uint16List **list, Error **errp)
1307 Error *err = NULL;
1308 Visitor *v;
1309 char *str;
1311 v = string_output_visitor_new(false, &str);
1312 object_property_get(obj, v, name, &err);
1313 if (err) {
1314 error_propagate(errp, err);
1315 goto out;
1317 visit_complete(v, &str);
1318 visit_free(v);
1319 v = string_input_visitor_new(str);
1320 visit_type_uint16List(v, NULL, list, errp);
1322 g_free(str);
1323 out:
1324 visit_free(v);
1327 void object_property_parse(Object *obj, const char *string,
1328 const char *name, Error **errp)
1330 Visitor *v = string_input_visitor_new(string);
1331 object_property_set(obj, v, name, errp);
1332 visit_free(v);
1335 char *object_property_print(Object *obj, const char *name, bool human,
1336 Error **errp)
1338 Visitor *v;
1339 char *string = NULL;
1340 Error *local_err = NULL;
1342 v = string_output_visitor_new(human, &string);
1343 object_property_get(obj, v, name, &local_err);
1344 if (local_err) {
1345 error_propagate(errp, local_err);
1346 goto out;
1349 visit_complete(v, &string);
1351 out:
1352 visit_free(v);
1353 return string;
1356 const char *object_property_get_type(Object *obj, const char *name, Error **errp)
1358 ObjectProperty *prop = object_property_find(obj, name, errp);
1359 if (prop == NULL) {
1360 return NULL;
1363 return prop->type;
1366 Object *object_get_root(void)
1368 static Object *root;
1370 if (!root) {
1371 root = object_new("container");
1374 return root;
1377 Object *object_get_objects_root(void)
1379 return container_get(object_get_root(), "/objects");
1382 Object *object_get_internal_root(void)
1384 static Object *internal_root;
1386 if (!internal_root) {
1387 internal_root = object_new("container");
1390 return internal_root;
1393 static void object_get_child_property(Object *obj, Visitor *v,
1394 const char *name, void *opaque,
1395 Error **errp)
1397 Object *child = opaque;
1398 gchar *path;
1400 path = object_get_canonical_path(child);
1401 visit_type_str(v, name, &path, errp);
1402 g_free(path);
1405 static Object *object_resolve_child_property(Object *parent, void *opaque, const gchar *part)
1407 return opaque;
1410 static void object_finalize_child_property(Object *obj, const char *name,
1411 void *opaque)
1413 Object *child = opaque;
1415 if (child->class->unparent) {
1416 (child->class->unparent)(child);
1418 child->parent = NULL;
1419 object_unref(child);
1422 void object_property_add_child(Object *obj, const char *name,
1423 Object *child, Error **errp)
1425 Error *local_err = NULL;
1426 gchar *type;
1427 ObjectProperty *op;
1429 if (child->parent != NULL) {
1430 error_setg(errp, "child object is already parented");
1431 return;
1434 type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child)));
1436 op = object_property_add(obj, name, type, object_get_child_property, NULL,
1437 object_finalize_child_property, child, &local_err);
1438 if (local_err) {
1439 error_propagate(errp, local_err);
1440 goto out;
1443 op->resolve = object_resolve_child_property;
1444 object_ref(child);
1445 child->parent = obj;
1447 out:
1448 g_free(type);
1451 void object_property_allow_set_link(const Object *obj, const char *name,
1452 Object *val, Error **errp)
1454 /* Allow the link to be set, always */
1457 typedef struct {
1458 Object **child;
1459 void (*check)(const Object *, const char *, Object *, Error **);
1460 ObjectPropertyLinkFlags flags;
1461 } LinkProperty;
1463 static void object_get_link_property(Object *obj, Visitor *v,
1464 const char *name, void *opaque,
1465 Error **errp)
1467 LinkProperty *lprop = opaque;
1468 Object **child = lprop->child;
1469 gchar *path;
1471 if (*child) {
1472 path = object_get_canonical_path(*child);
1473 visit_type_str(v, name, &path, errp);
1474 g_free(path);
1475 } else {
1476 path = (gchar *)"";
1477 visit_type_str(v, name, &path, errp);
1482 * object_resolve_link:
1484 * Lookup an object and ensure its type matches the link property type. This
1485 * is similar to object_resolve_path() except type verification against the
1486 * link property is performed.
1488 * Returns: The matched object or NULL on path lookup failures.
1490 static Object *object_resolve_link(Object *obj, const char *name,
1491 const char *path, Error **errp)
1493 const char *type;
1494 gchar *target_type;
1495 bool ambiguous = false;
1496 Object *target;
1498 /* Go from link<FOO> to FOO. */
1499 type = object_property_get_type(obj, name, NULL);
1500 target_type = g_strndup(&type[5], strlen(type) - 6);
1501 target = object_resolve_path_type(path, target_type, &ambiguous);
1503 if (ambiguous) {
1504 error_setg(errp, "Path '%s' does not uniquely identify an object",
1505 path);
1506 } else if (!target) {
1507 target = object_resolve_path(path, &ambiguous);
1508 if (target || ambiguous) {
1509 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
1510 } else {
1511 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1512 "Device '%s' not found", path);
1514 target = NULL;
1516 g_free(target_type);
1518 return target;
1521 static void object_set_link_property(Object *obj, Visitor *v,
1522 const char *name, void *opaque,
1523 Error **errp)
1525 Error *local_err = NULL;
1526 LinkProperty *prop = opaque;
1527 Object **child = prop->child;
1528 Object *old_target = *child;
1529 Object *new_target = NULL;
1530 char *path = NULL;
1532 visit_type_str(v, name, &path, &local_err);
1534 if (!local_err && strcmp(path, "") != 0) {
1535 new_target = object_resolve_link(obj, name, path, &local_err);
1538 g_free(path);
1539 if (local_err) {
1540 error_propagate(errp, local_err);
1541 return;
1544 prop->check(obj, name, new_target, &local_err);
1545 if (local_err) {
1546 error_propagate(errp, local_err);
1547 return;
1550 object_ref(new_target);
1551 *child = new_target;
1552 object_unref(old_target);
1555 static Object *object_resolve_link_property(Object *parent, void *opaque, const gchar *part)
1557 LinkProperty *lprop = opaque;
1559 return *lprop->child;
1562 static void object_release_link_property(Object *obj, const char *name,
1563 void *opaque)
1565 LinkProperty *prop = opaque;
1567 if ((prop->flags & OBJ_PROP_LINK_UNREF_ON_RELEASE) && *prop->child) {
1568 object_unref(*prop->child);
1570 g_free(prop);
1573 void object_property_add_link(Object *obj, const char *name,
1574 const char *type, Object **child,
1575 void (*check)(const Object *, const char *,
1576 Object *, Error **),
1577 ObjectPropertyLinkFlags flags,
1578 Error **errp)
1580 Error *local_err = NULL;
1581 LinkProperty *prop = g_malloc(sizeof(*prop));
1582 gchar *full_type;
1583 ObjectProperty *op;
1585 prop->child = child;
1586 prop->check = check;
1587 prop->flags = flags;
1589 full_type = g_strdup_printf("link<%s>", type);
1591 op = object_property_add(obj, name, full_type,
1592 object_get_link_property,
1593 check ? object_set_link_property : NULL,
1594 object_release_link_property,
1595 prop,
1596 &local_err);
1597 if (local_err) {
1598 error_propagate(errp, local_err);
1599 g_free(prop);
1600 goto out;
1603 op->resolve = object_resolve_link_property;
1605 out:
1606 g_free(full_type);
1609 void object_property_add_const_link(Object *obj, const char *name,
1610 Object *target, Error **errp)
1612 char *link_type;
1613 ObjectProperty *op;
1615 link_type = g_strdup_printf("link<%s>", object_get_typename(target));
1616 op = object_property_add(obj, name, link_type,
1617 object_get_child_property, NULL,
1618 NULL, target, errp);
1619 if (op != NULL) {
1620 op->resolve = object_resolve_child_property;
1622 g_free(link_type);
1625 gchar *object_get_canonical_path_component(Object *obj)
1627 ObjectProperty *prop = NULL;
1628 GHashTableIter iter;
1630 g_assert(obj);
1631 g_assert(obj->parent != NULL);
1633 g_hash_table_iter_init(&iter, obj->parent->properties);
1634 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1635 if (!object_property_is_child(prop)) {
1636 continue;
1639 if (prop->opaque == obj) {
1640 return g_strdup(prop->name);
1644 /* obj had a parent but was not a child, should never happen */
1645 g_assert_not_reached();
1646 return NULL;
1649 gchar *object_get_canonical_path(Object *obj)
1651 Object *root = object_get_root();
1652 char *newpath, *path = NULL;
1654 while (obj != root) {
1655 char *component = object_get_canonical_path_component(obj);
1657 if (path) {
1658 newpath = g_strdup_printf("%s/%s", component, path);
1659 g_free(component);
1660 g_free(path);
1661 path = newpath;
1662 } else {
1663 path = component;
1666 obj = obj->parent;
1669 newpath = g_strdup_printf("/%s", path ? path : "");
1670 g_free(path);
1672 return newpath;
1675 Object *object_resolve_path_component(Object *parent, const gchar *part)
1677 ObjectProperty *prop = object_property_find(parent, part, NULL);
1678 if (prop == NULL) {
1679 return NULL;
1682 if (prop->resolve) {
1683 return prop->resolve(parent, prop->opaque, part);
1684 } else {
1685 return NULL;
1689 static Object *object_resolve_abs_path(Object *parent,
1690 gchar **parts,
1691 const char *typename,
1692 int index)
1694 Object *child;
1696 if (parts[index] == NULL) {
1697 return object_dynamic_cast(parent, typename);
1700 if (strcmp(parts[index], "") == 0) {
1701 return object_resolve_abs_path(parent, parts, typename, index + 1);
1704 child = object_resolve_path_component(parent, parts[index]);
1705 if (!child) {
1706 return NULL;
1709 return object_resolve_abs_path(child, parts, typename, index + 1);
1712 static Object *object_resolve_partial_path(Object *parent,
1713 gchar **parts,
1714 const char *typename,
1715 bool *ambiguous)
1717 Object *obj;
1718 GHashTableIter iter;
1719 ObjectProperty *prop;
1721 obj = object_resolve_abs_path(parent, parts, typename, 0);
1723 g_hash_table_iter_init(&iter, parent->properties);
1724 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1725 Object *found;
1727 if (!object_property_is_child(prop)) {
1728 continue;
1731 found = object_resolve_partial_path(prop->opaque, parts,
1732 typename, ambiguous);
1733 if (found) {
1734 if (obj) {
1735 *ambiguous = true;
1736 return NULL;
1738 obj = found;
1741 if (*ambiguous) {
1742 return NULL;
1746 return obj;
1749 Object *object_resolve_path_type(const char *path, const char *typename,
1750 bool *ambiguousp)
1752 Object *obj;
1753 gchar **parts;
1755 parts = g_strsplit(path, "/", 0);
1756 assert(parts);
1758 if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
1759 bool ambiguous = false;
1760 obj = object_resolve_partial_path(object_get_root(), parts,
1761 typename, &ambiguous);
1762 if (ambiguousp) {
1763 *ambiguousp = ambiguous;
1765 } else {
1766 obj = object_resolve_abs_path(object_get_root(), parts, typename, 1);
1769 g_strfreev(parts);
1771 return obj;
1774 Object *object_resolve_path(const char *path, bool *ambiguous)
1776 return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
1779 typedef struct StringProperty
1781 char *(*get)(Object *, Error **);
1782 void (*set)(Object *, const char *, Error **);
1783 } StringProperty;
1785 static void property_get_str(Object *obj, Visitor *v, const char *name,
1786 void *opaque, Error **errp)
1788 StringProperty *prop = opaque;
1789 char *value;
1790 Error *err = NULL;
1792 value = prop->get(obj, &err);
1793 if (err) {
1794 error_propagate(errp, err);
1795 return;
1798 visit_type_str(v, name, &value, errp);
1799 g_free(value);
1802 static void property_set_str(Object *obj, Visitor *v, const char *name,
1803 void *opaque, Error **errp)
1805 StringProperty *prop = opaque;
1806 char *value;
1807 Error *local_err = NULL;
1809 visit_type_str(v, name, &value, &local_err);
1810 if (local_err) {
1811 error_propagate(errp, local_err);
1812 return;
1815 prop->set(obj, value, errp);
1816 g_free(value);
1819 static void property_release_str(Object *obj, const char *name,
1820 void *opaque)
1822 StringProperty *prop = opaque;
1823 g_free(prop);
1826 void object_property_add_str(Object *obj, const char *name,
1827 char *(*get)(Object *, Error **),
1828 void (*set)(Object *, const char *, Error **),
1829 Error **errp)
1831 Error *local_err = NULL;
1832 StringProperty *prop = g_malloc0(sizeof(*prop));
1834 prop->get = get;
1835 prop->set = set;
1837 object_property_add(obj, name, "string",
1838 get ? property_get_str : NULL,
1839 set ? property_set_str : NULL,
1840 property_release_str,
1841 prop, &local_err);
1842 if (local_err) {
1843 error_propagate(errp, local_err);
1844 g_free(prop);
1848 void object_class_property_add_str(ObjectClass *klass, const char *name,
1849 char *(*get)(Object *, Error **),
1850 void (*set)(Object *, const char *,
1851 Error **),
1852 Error **errp)
1854 Error *local_err = NULL;
1855 StringProperty *prop = g_malloc0(sizeof(*prop));
1857 prop->get = get;
1858 prop->set = set;
1860 object_class_property_add(klass, name, "string",
1861 get ? property_get_str : NULL,
1862 set ? property_set_str : NULL,
1863 property_release_str,
1864 prop, &local_err);
1865 if (local_err) {
1866 error_propagate(errp, local_err);
1867 g_free(prop);
1871 typedef struct BoolProperty
1873 bool (*get)(Object *, Error **);
1874 void (*set)(Object *, bool, Error **);
1875 } BoolProperty;
1877 static void property_get_bool(Object *obj, Visitor *v, const char *name,
1878 void *opaque, Error **errp)
1880 BoolProperty *prop = opaque;
1881 bool value;
1882 Error *err = NULL;
1884 value = prop->get(obj, &err);
1885 if (err) {
1886 error_propagate(errp, err);
1887 return;
1890 visit_type_bool(v, name, &value, errp);
1893 static void property_set_bool(Object *obj, Visitor *v, const char *name,
1894 void *opaque, Error **errp)
1896 BoolProperty *prop = opaque;
1897 bool value;
1898 Error *local_err = NULL;
1900 visit_type_bool(v, name, &value, &local_err);
1901 if (local_err) {
1902 error_propagate(errp, local_err);
1903 return;
1906 prop->set(obj, value, errp);
1909 static void property_release_bool(Object *obj, const char *name,
1910 void *opaque)
1912 BoolProperty *prop = opaque;
1913 g_free(prop);
1916 void object_property_add_bool(Object *obj, const char *name,
1917 bool (*get)(Object *, Error **),
1918 void (*set)(Object *, bool, Error **),
1919 Error **errp)
1921 Error *local_err = NULL;
1922 BoolProperty *prop = g_malloc0(sizeof(*prop));
1924 prop->get = get;
1925 prop->set = set;
1927 object_property_add(obj, name, "bool",
1928 get ? property_get_bool : NULL,
1929 set ? property_set_bool : NULL,
1930 property_release_bool,
1931 prop, &local_err);
1932 if (local_err) {
1933 error_propagate(errp, local_err);
1934 g_free(prop);
1938 void object_class_property_add_bool(ObjectClass *klass, const char *name,
1939 bool (*get)(Object *, Error **),
1940 void (*set)(Object *, bool, Error **),
1941 Error **errp)
1943 Error *local_err = NULL;
1944 BoolProperty *prop = g_malloc0(sizeof(*prop));
1946 prop->get = get;
1947 prop->set = set;
1949 object_class_property_add(klass, name, "bool",
1950 get ? property_get_bool : NULL,
1951 set ? property_set_bool : NULL,
1952 property_release_bool,
1953 prop, &local_err);
1954 if (local_err) {
1955 error_propagate(errp, local_err);
1956 g_free(prop);
1960 static void property_get_enum(Object *obj, Visitor *v, const char *name,
1961 void *opaque, Error **errp)
1963 EnumProperty *prop = opaque;
1964 int value;
1965 Error *err = NULL;
1967 value = prop->get(obj, &err);
1968 if (err) {
1969 error_propagate(errp, err);
1970 return;
1973 visit_type_enum(v, name, &value, prop->lookup, errp);
1976 static void property_set_enum(Object *obj, Visitor *v, const char *name,
1977 void *opaque, Error **errp)
1979 EnumProperty *prop = opaque;
1980 int value;
1981 Error *err = NULL;
1983 visit_type_enum(v, name, &value, prop->lookup, &err);
1984 if (err) {
1985 error_propagate(errp, err);
1986 return;
1988 prop->set(obj, value, errp);
1991 static void property_release_enum(Object *obj, const char *name,
1992 void *opaque)
1994 EnumProperty *prop = opaque;
1995 g_free(prop);
1998 void object_property_add_enum(Object *obj, const char *name,
1999 const char *typename,
2000 const QEnumLookup *lookup,
2001 int (*get)(Object *, Error **),
2002 void (*set)(Object *, int, Error **),
2003 Error **errp)
2005 Error *local_err = NULL;
2006 EnumProperty *prop = g_malloc(sizeof(*prop));
2008 prop->lookup = lookup;
2009 prop->get = get;
2010 prop->set = set;
2012 object_property_add(obj, name, typename,
2013 get ? property_get_enum : NULL,
2014 set ? property_set_enum : NULL,
2015 property_release_enum,
2016 prop, &local_err);
2017 if (local_err) {
2018 error_propagate(errp, local_err);
2019 g_free(prop);
2023 void object_class_property_add_enum(ObjectClass *klass, const char *name,
2024 const char *typename,
2025 const QEnumLookup *lookup,
2026 int (*get)(Object *, Error **),
2027 void (*set)(Object *, int, Error **),
2028 Error **errp)
2030 Error *local_err = NULL;
2031 EnumProperty *prop = g_malloc(sizeof(*prop));
2033 prop->lookup = lookup;
2034 prop->get = get;
2035 prop->set = set;
2037 object_class_property_add(klass, name, typename,
2038 get ? property_get_enum : NULL,
2039 set ? property_set_enum : NULL,
2040 property_release_enum,
2041 prop, &local_err);
2042 if (local_err) {
2043 error_propagate(errp, local_err);
2044 g_free(prop);
2048 typedef struct TMProperty {
2049 void (*get)(Object *, struct tm *, Error **);
2050 } TMProperty;
2052 static void property_get_tm(Object *obj, Visitor *v, const char *name,
2053 void *opaque, Error **errp)
2055 TMProperty *prop = opaque;
2056 Error *err = NULL;
2057 struct tm value;
2059 prop->get(obj, &value, &err);
2060 if (err) {
2061 goto out;
2064 visit_start_struct(v, name, NULL, 0, &err);
2065 if (err) {
2066 goto out;
2068 visit_type_int32(v, "tm_year", &value.tm_year, &err);
2069 if (err) {
2070 goto out_end;
2072 visit_type_int32(v, "tm_mon", &value.tm_mon, &err);
2073 if (err) {
2074 goto out_end;
2076 visit_type_int32(v, "tm_mday", &value.tm_mday, &err);
2077 if (err) {
2078 goto out_end;
2080 visit_type_int32(v, "tm_hour", &value.tm_hour, &err);
2081 if (err) {
2082 goto out_end;
2084 visit_type_int32(v, "tm_min", &value.tm_min, &err);
2085 if (err) {
2086 goto out_end;
2088 visit_type_int32(v, "tm_sec", &value.tm_sec, &err);
2089 if (err) {
2090 goto out_end;
2092 visit_check_struct(v, &err);
2093 out_end:
2094 visit_end_struct(v, NULL);
2095 out:
2096 error_propagate(errp, err);
2100 static void property_release_tm(Object *obj, const char *name,
2101 void *opaque)
2103 TMProperty *prop = opaque;
2104 g_free(prop);
2107 void object_property_add_tm(Object *obj, const char *name,
2108 void (*get)(Object *, struct tm *, Error **),
2109 Error **errp)
2111 Error *local_err = NULL;
2112 TMProperty *prop = g_malloc0(sizeof(*prop));
2114 prop->get = get;
2116 object_property_add(obj, name, "struct tm",
2117 get ? property_get_tm : NULL, NULL,
2118 property_release_tm,
2119 prop, &local_err);
2120 if (local_err) {
2121 error_propagate(errp, local_err);
2122 g_free(prop);
2126 void object_class_property_add_tm(ObjectClass *klass, const char *name,
2127 void (*get)(Object *, struct tm *, Error **),
2128 Error **errp)
2130 Error *local_err = NULL;
2131 TMProperty *prop = g_malloc0(sizeof(*prop));
2133 prop->get = get;
2135 object_class_property_add(klass, name, "struct tm",
2136 get ? property_get_tm : NULL, NULL,
2137 property_release_tm,
2138 prop, &local_err);
2139 if (local_err) {
2140 error_propagate(errp, local_err);
2141 g_free(prop);
2145 static char *qdev_get_type(Object *obj, Error **errp)
2147 return g_strdup(object_get_typename(obj));
2150 static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name,
2151 void *opaque, Error **errp)
2153 uint8_t value = *(uint8_t *)opaque;
2154 visit_type_uint8(v, name, &value, errp);
2157 static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name,
2158 void *opaque, Error **errp)
2160 uint16_t value = *(uint16_t *)opaque;
2161 visit_type_uint16(v, name, &value, errp);
2164 static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name,
2165 void *opaque, Error **errp)
2167 uint32_t value = *(uint32_t *)opaque;
2168 visit_type_uint32(v, name, &value, errp);
2171 static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name,
2172 void *opaque, Error **errp)
2174 uint64_t value = *(uint64_t *)opaque;
2175 visit_type_uint64(v, name, &value, errp);
2178 void object_property_add_uint8_ptr(Object *obj, const char *name,
2179 const uint8_t *v, Error **errp)
2181 object_property_add(obj, name, "uint8", property_get_uint8_ptr,
2182 NULL, NULL, (void *)v, errp);
2185 void object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name,
2186 const uint8_t *v, Error **errp)
2188 object_class_property_add(klass, name, "uint8", property_get_uint8_ptr,
2189 NULL, NULL, (void *)v, errp);
2192 void object_property_add_uint16_ptr(Object *obj, const char *name,
2193 const uint16_t *v, Error **errp)
2195 object_property_add(obj, name, "uint16", property_get_uint16_ptr,
2196 NULL, NULL, (void *)v, errp);
2199 void object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name,
2200 const uint16_t *v, Error **errp)
2202 object_class_property_add(klass, name, "uint16", property_get_uint16_ptr,
2203 NULL, NULL, (void *)v, errp);
2206 void object_property_add_uint32_ptr(Object *obj, const char *name,
2207 const uint32_t *v, Error **errp)
2209 object_property_add(obj, name, "uint32", property_get_uint32_ptr,
2210 NULL, NULL, (void *)v, errp);
2213 void object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name,
2214 const uint32_t *v, Error **errp)
2216 object_class_property_add(klass, name, "uint32", property_get_uint32_ptr,
2217 NULL, NULL, (void *)v, errp);
2220 void object_property_add_uint64_ptr(Object *obj, const char *name,
2221 const uint64_t *v, Error **errp)
2223 object_property_add(obj, name, "uint64", property_get_uint64_ptr,
2224 NULL, NULL, (void *)v, errp);
2227 void object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
2228 const uint64_t *v, Error **errp)
2230 object_class_property_add(klass, name, "uint64", property_get_uint64_ptr,
2231 NULL, NULL, (void *)v, errp);
2234 typedef struct {
2235 Object *target_obj;
2236 char *target_name;
2237 } AliasProperty;
2239 static void property_get_alias(Object *obj, Visitor *v, const char *name,
2240 void *opaque, Error **errp)
2242 AliasProperty *prop = opaque;
2244 object_property_get(prop->target_obj, v, prop->target_name, errp);
2247 static void property_set_alias(Object *obj, Visitor *v, const char *name,
2248 void *opaque, Error **errp)
2250 AliasProperty *prop = opaque;
2252 object_property_set(prop->target_obj, v, prop->target_name, errp);
2255 static Object *property_resolve_alias(Object *obj, void *opaque,
2256 const gchar *part)
2258 AliasProperty *prop = opaque;
2260 return object_resolve_path_component(prop->target_obj, prop->target_name);
2263 static void property_release_alias(Object *obj, const char *name, void *opaque)
2265 AliasProperty *prop = opaque;
2267 g_free(prop->target_name);
2268 g_free(prop);
2271 void object_property_add_alias(Object *obj, const char *name,
2272 Object *target_obj, const char *target_name,
2273 Error **errp)
2275 AliasProperty *prop;
2276 ObjectProperty *op;
2277 ObjectProperty *target_prop;
2278 gchar *prop_type;
2279 Error *local_err = NULL;
2281 target_prop = object_property_find(target_obj, target_name, errp);
2282 if (!target_prop) {
2283 return;
2286 if (object_property_is_child(target_prop)) {
2287 prop_type = g_strdup_printf("link%s",
2288 target_prop->type + strlen("child"));
2289 } else {
2290 prop_type = g_strdup(target_prop->type);
2293 prop = g_malloc(sizeof(*prop));
2294 prop->target_obj = target_obj;
2295 prop->target_name = g_strdup(target_name);
2297 op = object_property_add(obj, name, prop_type,
2298 property_get_alias,
2299 property_set_alias,
2300 property_release_alias,
2301 prop, &local_err);
2302 if (local_err) {
2303 error_propagate(errp, local_err);
2304 g_free(prop);
2305 goto out;
2307 op->resolve = property_resolve_alias;
2309 object_property_set_description(obj, op->name,
2310 target_prop->description,
2311 &error_abort);
2313 out:
2314 g_free(prop_type);
2317 void object_property_set_description(Object *obj, const char *name,
2318 const char *description, Error **errp)
2320 ObjectProperty *op;
2322 op = object_property_find(obj, name, errp);
2323 if (!op) {
2324 return;
2327 g_free(op->description);
2328 op->description = g_strdup(description);
2331 void object_class_property_set_description(ObjectClass *klass,
2332 const char *name,
2333 const char *description,
2334 Error **errp)
2336 ObjectProperty *op;
2338 op = g_hash_table_lookup(klass->properties, name);
2339 if (!op) {
2340 error_setg(errp, "Property '.%s' not found", name);
2341 return;
2344 g_free(op->description);
2345 op->description = g_strdup(description);
2348 static void object_instance_init(Object *obj)
2350 object_property_add_str(obj, "type", qdev_get_type, NULL, NULL);
2353 static void register_types(void)
2355 static TypeInfo interface_info = {
2356 .name = TYPE_INTERFACE,
2357 .class_size = sizeof(InterfaceClass),
2358 .abstract = true,
2361 static TypeInfo object_info = {
2362 .name = TYPE_OBJECT,
2363 .instance_size = sizeof(Object),
2364 .instance_init = object_instance_init,
2365 .abstract = true,
2368 type_interface = type_register_internal(&interface_info);
2369 type_register_internal(&object_info);
2372 type_init(register_types)