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2f28d2ff AL |
1 | /* |
2 | * QEMU Object Model | |
3 | * | |
4 | * Copyright IBM, Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
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. | |
11 | * | |
12 | */ | |
13 | ||
14 | #ifndef QEMU_OBJECT_H | |
15 | #define QEMU_OBJECT_H | |
16 | ||
eb815e24 | 17 | #include "qapi/qapi-builtin-types.h" |
0b8fa32f | 18 | #include "qemu/module.h" |
57c9fafe | 19 | |
2f28d2ff AL |
20 | struct TypeImpl; |
21 | typedef struct TypeImpl *Type; | |
22 | ||
2f28d2ff AL |
23 | typedef struct TypeInfo TypeInfo; |
24 | ||
25 | typedef struct InterfaceClass InterfaceClass; | |
26 | typedef struct InterfaceInfo InterfaceInfo; | |
27 | ||
745549c8 | 28 | #define TYPE_OBJECT "object" |
2f28d2ff | 29 | |
2a1be4b3 MAL |
30 | typedef struct ObjectProperty ObjectProperty; |
31 | ||
57c9fafe | 32 | /** |
ff59780f | 33 | * typedef ObjectPropertyAccessor: |
57c9fafe AL |
34 | * @obj: the object that owns the property |
35 | * @v: the visitor that contains the property data | |
57c9fafe | 36 | * @name: the name of the property |
d7bce999 | 37 | * @opaque: the object property opaque |
57c9fafe AL |
38 | * @errp: a pointer to an Error that is filled if getting/setting fails. |
39 | * | |
40 | * Called when trying to get/set a property. | |
41 | */ | |
42 | typedef void (ObjectPropertyAccessor)(Object *obj, | |
4fa45492 | 43 | Visitor *v, |
57c9fafe | 44 | const char *name, |
d7bce999 | 45 | void *opaque, |
e82df248 | 46 | Error **errp); |
57c9fafe | 47 | |
64607d08 | 48 | /** |
ff59780f | 49 | * typedef ObjectPropertyResolve: |
64607d08 PB |
50 | * @obj: the object that owns the property |
51 | * @opaque: the opaque registered with the property | |
52 | * @part: the name of the property | |
53 | * | |
54 | * Resolves the #Object corresponding to property @part. | |
55 | * | |
56 | * The returned object can also be used as a starting point | |
57 | * to resolve a relative path starting with "@part". | |
58 | * | |
59 | * Returns: If @path is the path that led to @obj, the function | |
60 | * returns the #Object corresponding to "@path/@part". | |
61 | * If "@path/@part" is not a valid object path, it returns #NULL. | |
62 | */ | |
63 | typedef Object *(ObjectPropertyResolve)(Object *obj, | |
64 | void *opaque, | |
65 | const char *part); | |
66 | ||
57c9fafe | 67 | /** |
ff59780f | 68 | * typedef ObjectPropertyRelease: |
57c9fafe AL |
69 | * @obj: the object that owns the property |
70 | * @name: the name of the property | |
71 | * @opaque: the opaque registered with the property | |
72 | * | |
73 | * Called when a property is removed from a object. | |
74 | */ | |
75 | typedef void (ObjectPropertyRelease)(Object *obj, | |
76 | const char *name, | |
77 | void *opaque); | |
78 | ||
2a1be4b3 | 79 | /** |
ff59780f | 80 | * typedef ObjectPropertyInit: |
2a1be4b3 MAL |
81 | * @obj: the object that owns the property |
82 | * @prop: the property to set | |
83 | * | |
84 | * Called when a property is initialized. | |
85 | */ | |
86 | typedef void (ObjectPropertyInit)(Object *obj, ObjectProperty *prop); | |
87 | ||
88 | struct ObjectProperty | |
57c9fafe | 89 | { |
ddfb0baa MA |
90 | char *name; |
91 | char *type; | |
92 | char *description; | |
57c9fafe AL |
93 | ObjectPropertyAccessor *get; |
94 | ObjectPropertyAccessor *set; | |
64607d08 | 95 | ObjectPropertyResolve *resolve; |
57c9fafe | 96 | ObjectPropertyRelease *release; |
2a1be4b3 | 97 | ObjectPropertyInit *init; |
57c9fafe | 98 | void *opaque; |
0e76ed0a | 99 | QObject *defval; |
2a1be4b3 | 100 | }; |
57c9fafe | 101 | |
667d22d1 | 102 | /** |
ff59780f | 103 | * typedef ObjectUnparent: |
667d22d1 PB |
104 | * @obj: the object that is being removed from the composition tree |
105 | * | |
106 | * Called when an object is being removed from the QOM composition tree. | |
107 | * The function should remove any backlinks from children objects to @obj. | |
108 | */ | |
109 | typedef void (ObjectUnparent)(Object *obj); | |
110 | ||
fde9bf44 | 111 | /** |
ff59780f | 112 | * typedef ObjectFree: |
fde9bf44 PB |
113 | * @obj: the object being freed |
114 | * | |
115 | * Called when an object's last reference is removed. | |
116 | */ | |
117 | typedef void (ObjectFree)(void *obj); | |
118 | ||
03587328 AL |
119 | #define OBJECT_CLASS_CAST_CACHE 4 |
120 | ||
2f28d2ff | 121 | /** |
ff59780f | 122 | * struct ObjectClass: |
2f28d2ff AL |
123 | * |
124 | * The base for all classes. The only thing that #ObjectClass contains is an | |
125 | * integer type handle. | |
126 | */ | |
127 | struct ObjectClass | |
128 | { | |
11e1c3ad | 129 | /* private: */ |
2f28d2ff | 130 | Type type; |
33e95c63 | 131 | GSList *interfaces; |
667d22d1 | 132 | |
0ab4c94c PC |
133 | const char *object_cast_cache[OBJECT_CLASS_CAST_CACHE]; |
134 | const char *class_cast_cache[OBJECT_CLASS_CAST_CACHE]; | |
03587328 | 135 | |
667d22d1 | 136 | ObjectUnparent *unparent; |
16bf7f52 DB |
137 | |
138 | GHashTable *properties; | |
2f28d2ff AL |
139 | }; |
140 | ||
141 | /** | |
ff59780f | 142 | * struct Object: |
2f28d2ff AL |
143 | * |
144 | * The base for all objects. The first member of this object is a pointer to | |
145 | * a #ObjectClass. Since C guarantees that the first member of a structure | |
146 | * always begins at byte 0 of that structure, as long as any sub-object places | |
147 | * its parent as the first member, we can cast directly to a #Object. | |
148 | * | |
149 | * As a result, #Object contains a reference to the objects type as its | |
150 | * first member. This allows identification of the real type of the object at | |
151 | * run time. | |
2f28d2ff AL |
152 | */ |
153 | struct Object | |
154 | { | |
11e1c3ad | 155 | /* private: */ |
2f28d2ff | 156 | ObjectClass *class; |
fde9bf44 | 157 | ObjectFree *free; |
b604a854 | 158 | GHashTable *properties; |
57c9fafe AL |
159 | uint32_t ref; |
160 | Object *parent; | |
2f28d2ff AL |
161 | }; |
162 | ||
7808a28f EH |
163 | /** |
164 | * DECLARE_INSTANCE_CHECKER: | |
165 | * @InstanceType: instance struct name | |
166 | * @OBJ_NAME: the object name in uppercase with underscore separators | |
167 | * @TYPENAME: type name | |
168 | * | |
169 | * Direct usage of this macro should be avoided, and the complete | |
170 | * OBJECT_DECLARE_TYPE macro is recommended instead. | |
171 | * | |
d5b9959d | 172 | * This macro will provide the instance type cast functions for a |
7808a28f EH |
173 | * QOM type. |
174 | */ | |
175 | #define DECLARE_INSTANCE_CHECKER(InstanceType, OBJ_NAME, TYPENAME) \ | |
176 | static inline G_GNUC_UNUSED InstanceType * \ | |
ad09bed1 | 177 | OBJ_NAME(const void *obj) \ |
7808a28f EH |
178 | { return OBJECT_CHECK(InstanceType, obj, TYPENAME); } |
179 | ||
180 | /** | |
181 | * DECLARE_CLASS_CHECKERS: | |
182 | * @ClassType: class struct name | |
183 | * @OBJ_NAME: the object name in uppercase with underscore separators | |
184 | * @TYPENAME: type name | |
185 | * | |
186 | * Direct usage of this macro should be avoided, and the complete | |
187 | * OBJECT_DECLARE_TYPE macro is recommended instead. | |
188 | * | |
d5b9959d | 189 | * This macro will provide the class type cast functions for a |
7808a28f EH |
190 | * QOM type. |
191 | */ | |
192 | #define DECLARE_CLASS_CHECKERS(ClassType, OBJ_NAME, TYPENAME) \ | |
193 | static inline G_GNUC_UNUSED ClassType * \ | |
ad09bed1 | 194 | OBJ_NAME##_GET_CLASS(const void *obj) \ |
7808a28f EH |
195 | { return OBJECT_GET_CLASS(ClassType, obj, TYPENAME); } \ |
196 | \ | |
197 | static inline G_GNUC_UNUSED ClassType * \ | |
ad09bed1 | 198 | OBJ_NAME##_CLASS(const void *klass) \ |
7808a28f EH |
199 | { return OBJECT_CLASS_CHECK(ClassType, klass, TYPENAME); } |
200 | ||
201 | /** | |
202 | * DECLARE_OBJ_CHECKERS: | |
203 | * @InstanceType: instance struct name | |
204 | * @ClassType: class struct name | |
205 | * @OBJ_NAME: the object name in uppercase with underscore separators | |
206 | * @TYPENAME: type name | |
207 | * | |
208 | * Direct usage of this macro should be avoided, and the complete | |
209 | * OBJECT_DECLARE_TYPE macro is recommended instead. | |
210 | * | |
211 | * This macro will provide the three standard type cast functions for a | |
212 | * QOM type. | |
213 | */ | |
214 | #define DECLARE_OBJ_CHECKERS(InstanceType, ClassType, OBJ_NAME, TYPENAME) \ | |
215 | DECLARE_INSTANCE_CHECKER(InstanceType, OBJ_NAME, TYPENAME) \ | |
216 | \ | |
217 | DECLARE_CLASS_CHECKERS(ClassType, OBJ_NAME, TYPENAME) | |
218 | ||
f84203a8 DB |
219 | /** |
220 | * OBJECT_DECLARE_TYPE: | |
4a5f0545 EH |
221 | * @InstanceType: instance struct name |
222 | * @ClassType: class struct name | |
f84203a8 DB |
223 | * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators |
224 | * | |
225 | * This macro is typically used in a header file, and will: | |
226 | * | |
227 | * - create the typedefs for the object and class structs | |
228 | * - register the type for use with g_autoptr | |
229 | * - provide three standard type cast functions | |
230 | * | |
231 | * The object struct and class struct need to be declared manually. | |
232 | */ | |
30b5707c | 233 | #define OBJECT_DECLARE_TYPE(InstanceType, ClassType, MODULE_OBJ_NAME) \ |
4a5f0545 EH |
234 | typedef struct InstanceType InstanceType; \ |
235 | typedef struct ClassType ClassType; \ | |
f84203a8 | 236 | \ |
4a5f0545 | 237 | G_DEFINE_AUTOPTR_CLEANUP_FUNC(InstanceType, object_unref) \ |
f84203a8 | 238 | \ |
7808a28f EH |
239 | DECLARE_OBJ_CHECKERS(InstanceType, ClassType, \ |
240 | MODULE_OBJ_NAME, TYPE_##MODULE_OBJ_NAME) | |
f84203a8 DB |
241 | |
242 | /** | |
243 | * OBJECT_DECLARE_SIMPLE_TYPE: | |
4a5f0545 | 244 | * @InstanceType: instance struct name |
f84203a8 | 245 | * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators |
f84203a8 | 246 | * |
c734cd40 EH |
247 | * This does the same as OBJECT_DECLARE_TYPE(), but with no class struct |
248 | * declared. | |
f84203a8 DB |
249 | * |
250 | * This macro should be used unless the class struct needs to have | |
251 | * virtual methods declared. | |
252 | */ | |
30b5707c | 253 | #define OBJECT_DECLARE_SIMPLE_TYPE(InstanceType, MODULE_OBJ_NAME) \ |
c734cd40 EH |
254 | typedef struct InstanceType InstanceType; \ |
255 | \ | |
256 | G_DEFINE_AUTOPTR_CLEANUP_FUNC(InstanceType, object_unref) \ | |
257 | \ | |
258 | DECLARE_INSTANCE_CHECKER(InstanceType, MODULE_OBJ_NAME, TYPE_##MODULE_OBJ_NAME) | |
f84203a8 DB |
259 | |
260 | ||
261 | /** | |
262 | * OBJECT_DEFINE_TYPE_EXTENDED: | |
263 | * @ModuleObjName: the object name with initial caps | |
264 | * @module_obj_name: the object name in lowercase with underscore separators | |
265 | * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators | |
266 | * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore | |
267 | * separators | |
268 | * @ABSTRACT: boolean flag to indicate whether the object can be instantiated | |
269 | * @...: list of initializers for "InterfaceInfo" to declare implemented interfaces | |
270 | * | |
271 | * This macro is typically used in a source file, and will: | |
272 | * | |
273 | * - declare prototypes for _finalize, _class_init and _init methods | |
274 | * - declare the TypeInfo struct instance | |
275 | * - provide the constructor to register the type | |
276 | * | |
277 | * After using this macro, implementations of the _finalize, _class_init, | |
278 | * and _init methods need to be written. Any of these can be zero-line | |
279 | * no-op impls if no special logic is required for a given type. | |
280 | * | |
281 | * This macro should rarely be used, instead one of the more specialized | |
282 | * macros is usually a better choice. | |
283 | */ | |
284 | #define OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \ | |
285 | MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \ | |
286 | ABSTRACT, ...) \ | |
287 | static void \ | |
288 | module_obj_name##_finalize(Object *obj); \ | |
289 | static void \ | |
290 | module_obj_name##_class_init(ObjectClass *oc, void *data); \ | |
291 | static void \ | |
292 | module_obj_name##_init(Object *obj); \ | |
293 | \ | |
294 | static const TypeInfo module_obj_name##_info = { \ | |
295 | .parent = TYPE_##PARENT_MODULE_OBJ_NAME, \ | |
296 | .name = TYPE_##MODULE_OBJ_NAME, \ | |
297 | .instance_size = sizeof(ModuleObjName), \ | |
4c880f36 | 298 | .instance_align = __alignof__(ModuleObjName), \ |
f84203a8 DB |
299 | .instance_init = module_obj_name##_init, \ |
300 | .instance_finalize = module_obj_name##_finalize, \ | |
301 | .class_size = sizeof(ModuleObjName##Class), \ | |
302 | .class_init = module_obj_name##_class_init, \ | |
303 | .abstract = ABSTRACT, \ | |
304 | .interfaces = (InterfaceInfo[]) { __VA_ARGS__ } , \ | |
305 | }; \ | |
306 | \ | |
307 | static void \ | |
308 | module_obj_name##_register_types(void) \ | |
309 | { \ | |
310 | type_register_static(&module_obj_name##_info); \ | |
311 | } \ | |
312 | type_init(module_obj_name##_register_types); | |
313 | ||
314 | /** | |
315 | * OBJECT_DEFINE_TYPE: | |
316 | * @ModuleObjName: the object name with initial caps | |
317 | * @module_obj_name: the object name in lowercase with underscore separators | |
318 | * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators | |
319 | * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore | |
320 | * separators | |
321 | * | |
322 | * This is a specialization of OBJECT_DEFINE_TYPE_EXTENDED, which is suitable | |
323 | * for the common case of a non-abstract type, without any interfaces. | |
324 | */ | |
325 | #define OBJECT_DEFINE_TYPE(ModuleObjName, module_obj_name, MODULE_OBJ_NAME, \ | |
326 | PARENT_MODULE_OBJ_NAME) \ | |
327 | OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \ | |
328 | MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \ | |
329 | false, { NULL }) | |
330 | ||
331 | /** | |
332 | * OBJECT_DEFINE_TYPE_WITH_INTERFACES: | |
333 | * @ModuleObjName: the object name with initial caps | |
334 | * @module_obj_name: the object name in lowercase with underscore separators | |
335 | * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators | |
336 | * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore | |
337 | * separators | |
338 | * @...: list of initializers for "InterfaceInfo" to declare implemented interfaces | |
339 | * | |
340 | * This is a specialization of OBJECT_DEFINE_TYPE_EXTENDED, which is suitable | |
341 | * for the common case of a non-abstract type, with one or more implemented | |
342 | * interfaces. | |
343 | * | |
344 | * Note when passing the list of interfaces, be sure to include the final | |
345 | * NULL entry, e.g. { TYPE_USER_CREATABLE }, { NULL } | |
346 | */ | |
347 | #define OBJECT_DEFINE_TYPE_WITH_INTERFACES(ModuleObjName, module_obj_name, \ | |
348 | MODULE_OBJ_NAME, \ | |
349 | PARENT_MODULE_OBJ_NAME, ...) \ | |
350 | OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \ | |
351 | MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \ | |
352 | false, __VA_ARGS__) | |
353 | ||
354 | /** | |
355 | * OBJECT_DEFINE_ABSTRACT_TYPE: | |
356 | * @ModuleObjName: the object name with initial caps | |
357 | * @module_obj_name: the object name in lowercase with underscore separators | |
358 | * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators | |
359 | * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore | |
360 | * separators | |
361 | * | |
362 | * This is a specialization of OBJECT_DEFINE_TYPE_EXTENDED, which is suitable | |
363 | * for defining an abstract type, without any interfaces. | |
364 | */ | |
365 | #define OBJECT_DEFINE_ABSTRACT_TYPE(ModuleObjName, module_obj_name, \ | |
366 | MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME) \ | |
367 | OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \ | |
368 | MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \ | |
369 | true, { NULL }) | |
370 | ||
2f28d2ff | 371 | /** |
ff59780f | 372 | * struct TypeInfo: |
2f28d2ff AL |
373 | * @name: The name of the type. |
374 | * @parent: The name of the parent type. | |
375 | * @instance_size: The size of the object (derivative of #Object). If | |
376 | * @instance_size is 0, then the size of the object will be the size of the | |
377 | * parent object. | |
4c880f36 RH |
378 | * @instance_align: The required alignment of the object. If @instance_align |
379 | * is 0, then normal malloc alignment is sufficient; if non-zero, then we | |
380 | * must use qemu_memalign for allocation. | |
2f28d2ff AL |
381 | * @instance_init: This function is called to initialize an object. The parent |
382 | * class will have already been initialized so the type is only responsible | |
383 | * for initializing its own members. | |
8231c2dd EH |
384 | * @instance_post_init: This function is called to finish initialization of |
385 | * an object, after all @instance_init functions were called. | |
2f28d2ff AL |
386 | * @instance_finalize: This function is called during object destruction. This |
387 | * is called before the parent @instance_finalize function has been called. | |
388 | * An object should only free the members that are unique to its type in this | |
389 | * function. | |
390 | * @abstract: If this field is true, then the class is considered abstract and | |
391 | * cannot be directly instantiated. | |
392 | * @class_size: The size of the class object (derivative of #ObjectClass) | |
393 | * for this object. If @class_size is 0, then the size of the class will be | |
394 | * assumed to be the size of the parent class. This allows a type to avoid | |
395 | * implementing an explicit class type if they are not adding additional | |
396 | * virtual functions. | |
397 | * @class_init: This function is called after all parent class initialization | |
441dd5eb | 398 | * has occurred to allow a class to set its default virtual method pointers. |
2f28d2ff AL |
399 | * This is also the function to use to override virtual methods from a parent |
400 | * class. | |
3b50e311 PB |
401 | * @class_base_init: This function is called for all base classes after all |
402 | * parent class initialization has occurred, but before the class itself | |
403 | * is initialized. This is the function to use to undo the effects of | |
39a1075a | 404 | * memcpy from the parent class to the descendants. |
37fdb2c5 MAL |
405 | * @class_data: Data to pass to the @class_init, |
406 | * @class_base_init. This can be useful when building dynamic | |
3b50e311 | 407 | * classes. |
2f28d2ff AL |
408 | * @interfaces: The list of interfaces associated with this type. This |
409 | * should point to a static array that's terminated with a zero filled | |
410 | * element. | |
411 | */ | |
412 | struct TypeInfo | |
413 | { | |
414 | const char *name; | |
415 | const char *parent; | |
416 | ||
417 | size_t instance_size; | |
4c880f36 | 418 | size_t instance_align; |
2f28d2ff | 419 | void (*instance_init)(Object *obj); |
8231c2dd | 420 | void (*instance_post_init)(Object *obj); |
2f28d2ff AL |
421 | void (*instance_finalize)(Object *obj); |
422 | ||
423 | bool abstract; | |
424 | size_t class_size; | |
425 | ||
426 | void (*class_init)(ObjectClass *klass, void *data); | |
3b50e311 | 427 | void (*class_base_init)(ObjectClass *klass, void *data); |
2f28d2ff AL |
428 | void *class_data; |
429 | ||
430 | InterfaceInfo *interfaces; | |
431 | }; | |
432 | ||
433 | /** | |
434 | * OBJECT: | |
435 | * @obj: A derivative of #Object | |
436 | * | |
437 | * Converts an object to a #Object. Since all objects are #Objects, | |
438 | * this function will always succeed. | |
439 | */ | |
440 | #define OBJECT(obj) \ | |
441 | ((Object *)(obj)) | |
442 | ||
1ed5b918 PB |
443 | /** |
444 | * OBJECT_CLASS: | |
a0dbf408 | 445 | * @class: A derivative of #ObjectClass. |
1ed5b918 PB |
446 | * |
447 | * Converts a class to an #ObjectClass. Since all objects are #Objects, | |
448 | * this function will always succeed. | |
449 | */ | |
450 | #define OBJECT_CLASS(class) \ | |
451 | ((ObjectClass *)(class)) | |
452 | ||
2f28d2ff AL |
453 | /** |
454 | * OBJECT_CHECK: | |
455 | * @type: The C type to use for the return value. | |
456 | * @obj: A derivative of @type to cast. | |
457 | * @name: The QOM typename of @type | |
458 | * | |
459 | * A type safe version of @object_dynamic_cast_assert. Typically each class | |
460 | * will define a macro based on this type to perform type safe dynamic_casts to | |
461 | * this object type. | |
462 | * | |
463 | * If an invalid object is passed to this function, a run time assert will be | |
464 | * generated. | |
465 | */ | |
466 | #define OBJECT_CHECK(type, obj, name) \ | |
be17f18b PB |
467 | ((type *)object_dynamic_cast_assert(OBJECT(obj), (name), \ |
468 | __FILE__, __LINE__, __func__)) | |
2f28d2ff AL |
469 | |
470 | /** | |
471 | * OBJECT_CLASS_CHECK: | |
b30d8054 C |
472 | * @class_type: The C type to use for the return value. |
473 | * @class: A derivative class of @class_type to cast. | |
474 | * @name: the QOM typename of @class_type. | |
2f28d2ff | 475 | * |
1ed5b918 PB |
476 | * A type safe version of @object_class_dynamic_cast_assert. This macro is |
477 | * typically wrapped by each type to perform type safe casts of a class to a | |
478 | * specific class type. | |
2f28d2ff | 479 | */ |
b30d8054 C |
480 | #define OBJECT_CLASS_CHECK(class_type, class, name) \ |
481 | ((class_type *)object_class_dynamic_cast_assert(OBJECT_CLASS(class), (name), \ | |
be17f18b | 482 | __FILE__, __LINE__, __func__)) |
2f28d2ff AL |
483 | |
484 | /** | |
485 | * OBJECT_GET_CLASS: | |
486 | * @class: The C type to use for the return value. | |
487 | * @obj: The object to obtain the class for. | |
488 | * @name: The QOM typename of @obj. | |
489 | * | |
490 | * This function will return a specific class for a given object. Its generally | |
491 | * used by each type to provide a type safe macro to get a specific class type | |
492 | * from an object. | |
493 | */ | |
494 | #define OBJECT_GET_CLASS(class, obj, name) \ | |
495 | OBJECT_CLASS_CHECK(class, object_get_class(OBJECT(obj)), name) | |
496 | ||
33e95c63 | 497 | /** |
ff59780f | 498 | * struct InterfaceInfo: |
33e95c63 AL |
499 | * @type: The name of the interface. |
500 | * | |
501 | * The information associated with an interface. | |
502 | */ | |
503 | struct InterfaceInfo { | |
504 | const char *type; | |
505 | }; | |
506 | ||
2f28d2ff | 507 | /** |
ff59780f | 508 | * struct InterfaceClass: |
2f28d2ff AL |
509 | * @parent_class: the base class |
510 | * | |
511 | * The class for all interfaces. Subclasses of this class should only add | |
512 | * virtual methods. | |
513 | */ | |
514 | struct InterfaceClass | |
515 | { | |
516 | ObjectClass parent_class; | |
11e1c3ad | 517 | /* private: */ |
33e95c63 | 518 | ObjectClass *concrete_class; |
b061dc41 | 519 | Type interface_type; |
2f28d2ff AL |
520 | }; |
521 | ||
33e95c63 AL |
522 | #define TYPE_INTERFACE "interface" |
523 | ||
2f28d2ff | 524 | /** |
33e95c63 AL |
525 | * INTERFACE_CLASS: |
526 | * @klass: class to cast from | |
527 | * Returns: An #InterfaceClass or raise an error if cast is invalid | |
2f28d2ff | 528 | */ |
33e95c63 AL |
529 | #define INTERFACE_CLASS(klass) \ |
530 | OBJECT_CLASS_CHECK(InterfaceClass, klass, TYPE_INTERFACE) | |
2f28d2ff | 531 | |
33e95c63 AL |
532 | /** |
533 | * INTERFACE_CHECK: | |
534 | * @interface: the type to return | |
535 | * @obj: the object to convert to an interface | |
536 | * @name: the interface type name | |
537 | * | |
538 | * Returns: @obj casted to @interface if cast is valid, otherwise raise error. | |
539 | */ | |
540 | #define INTERFACE_CHECK(interface, obj, name) \ | |
be17f18b PB |
541 | ((interface *)object_dynamic_cast_assert(OBJECT((obj)), (name), \ |
542 | __FILE__, __LINE__, __func__)) | |
2f28d2ff | 543 | |
3c75e12e PB |
544 | /** |
545 | * object_new_with_class: | |
546 | * @klass: The class to instantiate. | |
547 | * | |
548 | * This function will initialize a new object using heap allocated memory. | |
549 | * The returned object has a reference count of 1, and will be freed when | |
550 | * the last reference is dropped. | |
551 | * | |
552 | * Returns: The newly allocated and instantiated object. | |
553 | */ | |
554 | Object *object_new_with_class(ObjectClass *klass); | |
555 | ||
2f28d2ff AL |
556 | /** |
557 | * object_new: | |
558 | * @typename: The name of the type of the object to instantiate. | |
559 | * | |
b76facc3 PB |
560 | * This function will initialize a new object using heap allocated memory. |
561 | * The returned object has a reference count of 1, and will be freed when | |
562 | * the last reference is dropped. | |
2f28d2ff AL |
563 | * |
564 | * Returns: The newly allocated and instantiated object. | |
565 | */ | |
566 | Object *object_new(const char *typename); | |
567 | ||
a31bdae5 DB |
568 | /** |
569 | * object_new_with_props: | |
570 | * @typename: The name of the type of the object to instantiate. | |
571 | * @parent: the parent object | |
572 | * @id: The unique ID of the object | |
573 | * @errp: pointer to error object | |
574 | * @...: list of property names and values | |
575 | * | |
576 | * This function will initialize a new object using heap allocated memory. | |
577 | * The returned object has a reference count of 1, and will be freed when | |
578 | * the last reference is dropped. | |
579 | * | |
580 | * The @id parameter will be used when registering the object as a | |
581 | * child of @parent in the composition tree. | |
582 | * | |
583 | * The variadic parameters are a list of pairs of (propname, propvalue) | |
584 | * strings. The propname of %NULL indicates the end of the property | |
585 | * list. If the object implements the user creatable interface, the | |
586 | * object will be marked complete once all the properties have been | |
587 | * processed. | |
588 | * | |
6cf164c0 EH |
589 | * .. code-block:: c |
590 | * :caption: Creating an object with properties | |
591 | * | |
9bbfd245 EH |
592 | * Error *err = NULL; |
593 | * Object *obj; | |
594 | * | |
595 | * obj = object_new_with_props(TYPE_MEMORY_BACKEND_FILE, | |
596 | * object_get_objects_root(), | |
597 | * "hostmem0", | |
598 | * &err, | |
599 | * "share", "yes", | |
600 | * "mem-path", "/dev/shm/somefile", | |
601 | * "prealloc", "yes", | |
602 | * "size", "1048576", | |
603 | * NULL); | |
604 | * | |
605 | * if (!obj) { | |
606 | * error_reportf_err(err, "Cannot create memory backend: "); | |
607 | * } | |
a31bdae5 DB |
608 | * |
609 | * The returned object will have one stable reference maintained | |
610 | * for as long as it is present in the object hierarchy. | |
611 | * | |
612 | * Returns: The newly allocated, instantiated & initialized object. | |
613 | */ | |
614 | Object *object_new_with_props(const char *typename, | |
615 | Object *parent, | |
616 | const char *id, | |
617 | Error **errp, | |
887ce500 | 618 | ...) G_GNUC_NULL_TERMINATED; |
a31bdae5 DB |
619 | |
620 | /** | |
621 | * object_new_with_propv: | |
622 | * @typename: The name of the type of the object to instantiate. | |
623 | * @parent: the parent object | |
624 | * @id: The unique ID of the object | |
625 | * @errp: pointer to error object | |
626 | * @vargs: list of property names and values | |
627 | * | |
628 | * See object_new_with_props() for documentation. | |
629 | */ | |
630 | Object *object_new_with_propv(const char *typename, | |
631 | Object *parent, | |
632 | const char *id, | |
633 | Error **errp, | |
634 | va_list vargs); | |
635 | ||
6fd5bef1 | 636 | bool object_apply_global_props(Object *obj, const GPtrArray *props, |
ea9ce893 | 637 | Error **errp); |
617902af MA |
638 | void object_set_machine_compat_props(GPtrArray *compat_props); |
639 | void object_set_accelerator_compat_props(GPtrArray *compat_props); | |
a8dc82ce GK |
640 | void object_register_sugar_prop(const char *driver, const char *prop, |
641 | const char *value, bool optional); | |
617902af | 642 | void object_apply_compat_props(Object *obj); |
ea9ce893 | 643 | |
a31bdae5 DB |
644 | /** |
645 | * object_set_props: | |
646 | * @obj: the object instance to set properties on | |
647 | * @errp: pointer to error object | |
648 | * @...: list of property names and values | |
649 | * | |
650 | * This function will set a list of properties on an existing object | |
651 | * instance. | |
652 | * | |
653 | * The variadic parameters are a list of pairs of (propname, propvalue) | |
654 | * strings. The propname of %NULL indicates the end of the property | |
655 | * list. | |
656 | * | |
6cf164c0 EH |
657 | * .. code-block:: c |
658 | * :caption: Update an object's properties | |
659 | * | |
9bbfd245 EH |
660 | * Error *err = NULL; |
661 | * Object *obj = ...get / create object...; | |
662 | * | |
663 | * if (!object_set_props(obj, | |
664 | * &err, | |
665 | * "share", "yes", | |
666 | * "mem-path", "/dev/shm/somefile", | |
667 | * "prealloc", "yes", | |
668 | * "size", "1048576", | |
669 | * NULL)) { | |
670 | * error_reportf_err(err, "Cannot set properties: "); | |
671 | * } | |
a31bdae5 DB |
672 | * |
673 | * The returned object will have one stable reference maintained | |
674 | * for as long as it is present in the object hierarchy. | |
675 | * | |
b783f54d | 676 | * Returns: %true on success, %false on error. |
a31bdae5 | 677 | */ |
887ce500 | 678 | bool object_set_props(Object *obj, Error **errp, ...) G_GNUC_NULL_TERMINATED; |
a31bdae5 DB |
679 | |
680 | /** | |
681 | * object_set_propv: | |
682 | * @obj: the object instance to set properties on | |
683 | * @errp: pointer to error object | |
684 | * @vargs: list of property names and values | |
685 | * | |
686 | * See object_set_props() for documentation. | |
687 | * | |
b783f54d | 688 | * Returns: %true on success, %false on error. |
a31bdae5 | 689 | */ |
b783f54d | 690 | bool object_set_propv(Object *obj, Error **errp, va_list vargs); |
a31bdae5 | 691 | |
2f28d2ff AL |
692 | /** |
693 | * object_initialize: | |
694 | * @obj: A pointer to the memory to be used for the object. | |
213f0c4f | 695 | * @size: The maximum size available at @obj for the object. |
2f28d2ff AL |
696 | * @typename: The name of the type of the object to instantiate. |
697 | * | |
698 | * This function will initialize an object. The memory for the object should | |
b76facc3 PB |
699 | * have already been allocated. The returned object has a reference count of 1, |
700 | * and will be finalized when the last reference is dropped. | |
2f28d2ff | 701 | */ |
213f0c4f | 702 | void object_initialize(void *obj, size_t size, const char *typename); |
2f28d2ff | 703 | |
0210b39d | 704 | /** |
9fc7fc4d | 705 | * object_initialize_child_with_props: |
0210b39d TH |
706 | * @parentobj: The parent object to add a property to |
707 | * @propname: The name of the property | |
708 | * @childobj: A pointer to the memory to be used for the object. | |
709 | * @size: The maximum size available at @childobj for the object. | |
710 | * @type: The name of the type of the object to instantiate. | |
711 | * @errp: If an error occurs, a pointer to an area to store the error | |
712 | * @...: list of property names and values | |
713 | * | |
714 | * This function will initialize an object. The memory for the object should | |
715 | * have already been allocated. The object will then be added as child property | |
716 | * to a parent with object_property_add_child() function. The returned object | |
717 | * has a reference count of 1 (for the "child<...>" property from the parent), | |
718 | * so the object will be finalized automatically when the parent gets removed. | |
719 | * | |
720 | * The variadic parameters are a list of pairs of (propname, propvalue) | |
721 | * strings. The propname of %NULL indicates the end of the property list. | |
722 | * If the object implements the user creatable interface, the object will | |
723 | * be marked complete once all the properties have been processed. | |
6fd5bef1 MA |
724 | * |
725 | * Returns: %true on success, %false on failure. | |
0210b39d | 726 | */ |
6fd5bef1 | 727 | bool object_initialize_child_with_props(Object *parentobj, |
9fc7fc4d | 728 | const char *propname, |
0210b39d | 729 | void *childobj, size_t size, const char *type, |
887ce500 | 730 | Error **errp, ...) G_GNUC_NULL_TERMINATED; |
0210b39d TH |
731 | |
732 | /** | |
9fc7fc4d | 733 | * object_initialize_child_with_propsv: |
0210b39d TH |
734 | * @parentobj: The parent object to add a property to |
735 | * @propname: The name of the property | |
736 | * @childobj: A pointer to the memory to be used for the object. | |
737 | * @size: The maximum size available at @childobj for the object. | |
738 | * @type: The name of the type of the object to instantiate. | |
739 | * @errp: If an error occurs, a pointer to an area to store the error | |
740 | * @vargs: list of property names and values | |
741 | * | |
742 | * See object_initialize_child() for documentation. | |
6fd5bef1 MA |
743 | * |
744 | * Returns: %true on success, %false on failure. | |
0210b39d | 745 | */ |
6fd5bef1 | 746 | bool object_initialize_child_with_propsv(Object *parentobj, |
9fc7fc4d | 747 | const char *propname, |
0210b39d TH |
748 | void *childobj, size_t size, const char *type, |
749 | Error **errp, va_list vargs); | |
750 | ||
9fc7fc4d MA |
751 | /** |
752 | * object_initialize_child: | |
753 | * @parent: The parent object to add a property to | |
754 | * @propname: The name of the property | |
755 | * @child: A precisely typed pointer to the memory to be used for the | |
756 | * object. | |
757 | * @type: The name of the type of the object to instantiate. | |
758 | * | |
6cf164c0 EH |
759 | * This is like:: |
760 | * | |
761 | * object_initialize_child_with_props(parent, propname, | |
762 | * child, sizeof(*child), type, | |
763 | * &error_abort, NULL) | |
9fc7fc4d MA |
764 | */ |
765 | #define object_initialize_child(parent, propname, child, type) \ | |
766 | object_initialize_child_internal((parent), (propname), \ | |
767 | (child), sizeof(*(child)), (type)) | |
768 | void object_initialize_child_internal(Object *parent, const char *propname, | |
769 | void *child, size_t size, | |
770 | const char *type); | |
771 | ||
2f28d2ff AL |
772 | /** |
773 | * object_dynamic_cast: | |
774 | * @obj: The object to cast. | |
775 | * @typename: The @typename to cast to. | |
776 | * | |
777 | * This function will determine if @obj is-a @typename. @obj can refer to an | |
778 | * object or an interface associated with an object. | |
779 | * | |
780 | * Returns: This function returns @obj on success or #NULL on failure. | |
781 | */ | |
782 | Object *object_dynamic_cast(Object *obj, const char *typename); | |
783 | ||
784 | /** | |
438e1c79 | 785 | * object_dynamic_cast_assert: |
1827c35b EH |
786 | * @obj: The object to cast. |
787 | * @typename: The @typename to cast to. | |
788 | * @file: Source code file where function was called | |
789 | * @line: Source code line where function was called | |
790 | * @func: Name of function where this function was called | |
2f28d2ff AL |
791 | * |
792 | * See object_dynamic_cast() for a description of the parameters of this | |
793 | * function. The only difference in behavior is that this function asserts | |
3556c233 PB |
794 | * instead of returning #NULL on failure if QOM cast debugging is enabled. |
795 | * This function is not meant to be called directly, but only through | |
796 | * the wrapper macro OBJECT_CHECK. | |
2f28d2ff | 797 | */ |
be17f18b PB |
798 | Object *object_dynamic_cast_assert(Object *obj, const char *typename, |
799 | const char *file, int line, const char *func); | |
2f28d2ff AL |
800 | |
801 | /** | |
802 | * object_get_class: | |
803 | * @obj: A derivative of #Object | |
804 | * | |
805 | * Returns: The #ObjectClass of the type associated with @obj. | |
806 | */ | |
807 | ObjectClass *object_get_class(Object *obj); | |
808 | ||
809 | /** | |
810 | * object_get_typename: | |
811 | * @obj: A derivative of #Object. | |
812 | * | |
813 | * Returns: The QOM typename of @obj. | |
814 | */ | |
8f5d58ef | 815 | const char *object_get_typename(const Object *obj); |
2f28d2ff AL |
816 | |
817 | /** | |
818 | * type_register_static: | |
819 | * @info: The #TypeInfo of the new type. | |
820 | * | |
821 | * @info and all of the strings it points to should exist for the life time | |
822 | * that the type is registered. | |
823 | * | |
31b93521 | 824 | * Returns: the new #Type. |
2f28d2ff AL |
825 | */ |
826 | Type type_register_static(const TypeInfo *info); | |
827 | ||
828 | /** | |
829 | * type_register: | |
830 | * @info: The #TypeInfo of the new type | |
831 | * | |
93148aa5 | 832 | * Unlike type_register_static(), this call does not require @info or its |
2f28d2ff AL |
833 | * string members to continue to exist after the call returns. |
834 | * | |
31b93521 | 835 | * Returns: the new #Type. |
2f28d2ff AL |
836 | */ |
837 | Type type_register(const TypeInfo *info); | |
838 | ||
aa04c9d2 IM |
839 | /** |
840 | * type_register_static_array: | |
841 | * @infos: The array of the new type #TypeInfo structures. | |
842 | * @nr_infos: number of entries in @infos | |
843 | * | |
844 | * @infos and all of the strings it points to should exist for the life time | |
845 | * that the type is registered. | |
846 | */ | |
847 | void type_register_static_array(const TypeInfo *infos, int nr_infos); | |
848 | ||
38b5d79b IM |
849 | /** |
850 | * DEFINE_TYPES: | |
851 | * @type_array: The array containing #TypeInfo structures to register | |
852 | * | |
853 | * @type_array should be static constant that exists for the life time | |
854 | * that the type is registered. | |
855 | */ | |
856 | #define DEFINE_TYPES(type_array) \ | |
857 | static void do_qemu_init_ ## type_array(void) \ | |
858 | { \ | |
859 | type_register_static_array(type_array, ARRAY_SIZE(type_array)); \ | |
860 | } \ | |
861 | type_init(do_qemu_init_ ## type_array) | |
862 | ||
3bb69445 PB |
863 | /** |
864 | * type_print_class_properties: | |
865 | * @type: a QOM class name | |
866 | * | |
867 | * Print the object's class properties to stdout or the monitor. | |
868 | * Return whether an object was found. | |
869 | */ | |
870 | bool type_print_class_properties(const char *type); | |
871 | ||
872 | /** | |
873 | * object_set_properties_from_keyval: | |
874 | * @obj: a QOM object | |
875 | * @qdict: a dictionary with the properties to be set | |
876 | * @from_json: true if leaf values of @qdict are typed, false if they | |
877 | * are strings | |
878 | * @errp: pointer to error object | |
879 | * | |
880 | * For each key in the dictionary, parse the value string if needed, | |
881 | * then set the corresponding property in @obj. | |
882 | */ | |
883 | void object_set_properties_from_keyval(Object *obj, const QDict *qdict, | |
884 | bool from_json, Error **errp); | |
885 | ||
2f28d2ff AL |
886 | /** |
887 | * object_class_dynamic_cast_assert: | |
888 | * @klass: The #ObjectClass to attempt to cast. | |
889 | * @typename: The QOM typename of the class to cast to. | |
1827c35b EH |
890 | * @file: Source code file where function was called |
891 | * @line: Source code line where function was called | |
892 | * @func: Name of function where this function was called | |
2f28d2ff | 893 | * |
33bc94eb PB |
894 | * See object_class_dynamic_cast() for a description of the parameters |
895 | * of this function. The only difference in behavior is that this function | |
3556c233 PB |
896 | * asserts instead of returning #NULL on failure if QOM cast debugging is |
897 | * enabled. This function is not meant to be called directly, but only through | |
04dcf4b5 | 898 | * the wrapper macro OBJECT_CLASS_CHECK. |
2f28d2ff AL |
899 | */ |
900 | ObjectClass *object_class_dynamic_cast_assert(ObjectClass *klass, | |
be17f18b PB |
901 | const char *typename, |
902 | const char *file, int line, | |
903 | const char *func); | |
2f28d2ff | 904 | |
33bc94eb PB |
905 | /** |
906 | * object_class_dynamic_cast: | |
907 | * @klass: The #ObjectClass to attempt to cast. | |
908 | * @typename: The QOM typename of the class to cast to. | |
909 | * | |
910 | * Returns: If @typename is a class, this function returns @klass if | |
911 | * @typename is a subtype of @klass, else returns #NULL. | |
912 | * | |
913 | * If @typename is an interface, this function returns the interface | |
914 | * definition for @klass if @klass implements it unambiguously; #NULL | |
915 | * is returned if @klass does not implement the interface or if multiple | |
916 | * classes or interfaces on the hierarchy leading to @klass implement | |
917 | * it. (FIXME: perhaps this can be detected at type definition time?) | |
918 | */ | |
2f28d2ff AL |
919 | ObjectClass *object_class_dynamic_cast(ObjectClass *klass, |
920 | const char *typename); | |
921 | ||
e7cce67f PB |
922 | /** |
923 | * object_class_get_parent: | |
924 | * @klass: The class to obtain the parent for. | |
925 | * | |
926 | * Returns: The parent for @klass or %NULL if none. | |
927 | */ | |
928 | ObjectClass *object_class_get_parent(ObjectClass *klass); | |
929 | ||
2f28d2ff AL |
930 | /** |
931 | * object_class_get_name: | |
932 | * @klass: The class to obtain the QOM typename for. | |
933 | * | |
934 | * Returns: The QOM typename for @klass. | |
935 | */ | |
936 | const char *object_class_get_name(ObjectClass *klass); | |
937 | ||
17862378 AF |
938 | /** |
939 | * object_class_is_abstract: | |
940 | * @klass: The class to obtain the abstractness for. | |
941 | * | |
942 | * Returns: %true if @klass is abstract, %false otherwise. | |
943 | */ | |
944 | bool object_class_is_abstract(ObjectClass *klass); | |
945 | ||
0466e458 PB |
946 | /** |
947 | * object_class_by_name: | |
948 | * @typename: The QOM typename to obtain the class for. | |
949 | * | |
950 | * Returns: The class for @typename or %NULL if not found. | |
951 | */ | |
2f28d2ff AL |
952 | ObjectClass *object_class_by_name(const char *typename); |
953 | ||
0f8198f1 GH |
954 | /** |
955 | * module_object_class_by_name: | |
956 | * @typename: The QOM typename to obtain the class for. | |
957 | * | |
958 | * For objects which might be provided by a module. Behaves like | |
959 | * object_class_by_name, but additionally tries to load the module | |
960 | * needed in case the class is not available. | |
961 | * | |
962 | * Returns: The class for @typename or %NULL if not found. | |
963 | */ | |
964 | ObjectClass *module_object_class_by_name(const char *typename); | |
965 | ||
2f28d2ff | 966 | void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), |
93c511a1 | 967 | const char *implements_type, bool include_abstract, |
2f28d2ff | 968 | void *opaque); |
418ba9e5 AF |
969 | |
970 | /** | |
971 | * object_class_get_list: | |
972 | * @implements_type: The type to filter for, including its derivatives. | |
973 | * @include_abstract: Whether to include abstract classes. | |
974 | * | |
975 | * Returns: A singly-linked list of the classes in reverse hashtable order. | |
976 | */ | |
977 | GSList *object_class_get_list(const char *implements_type, | |
978 | bool include_abstract); | |
47c66009 PB |
979 | |
980 | /** | |
981 | * object_class_get_list_sorted: | |
982 | * @implements_type: The type to filter for, including its derivatives. | |
983 | * @include_abstract: Whether to include abstract classes. | |
984 | * | |
985 | * Returns: A singly-linked list of the classes in alphabetical | |
986 | * case-insensitive order. | |
987 | */ | |
988 | GSList *object_class_get_list_sorted(const char *implements_type, | |
989 | bool include_abstract); | |
418ba9e5 | 990 | |
57c9fafe AL |
991 | /** |
992 | * object_ref: | |
993 | * @obj: the object | |
994 | * | |
995 | * Increase the reference count of a object. A object cannot be freed as long | |
996 | * as its reference count is greater than zero. | |
b77ade9b | 997 | * Returns: @obj |
57c9fafe | 998 | */ |
c5a61e5a | 999 | Object *object_ref(void *obj); |
57c9fafe AL |
1000 | |
1001 | /** | |
ada03a0e | 1002 | * object_unref: |
57c9fafe AL |
1003 | * @obj: the object |
1004 | * | |
1005 | * Decrease the reference count of a object. A object cannot be freed as long | |
1006 | * as its reference count is greater than zero. | |
1007 | */ | |
c5a61e5a | 1008 | void object_unref(void *obj); |
57c9fafe AL |
1009 | |
1010 | /** | |
db57fef1 | 1011 | * object_property_try_add: |
57c9fafe AL |
1012 | * @obj: the object to add a property to |
1013 | * @name: the name of the property. This can contain any character except for | |
1014 | * a forward slash. In general, you should use hyphens '-' instead of | |
1015 | * underscores '_' when naming properties. | |
1016 | * @type: the type name of the property. This namespace is pretty loosely | |
1017 | * defined. Sub namespaces are constructed by using a prefix and then | |
1018 | * to angle brackets. For instance, the type 'virtio-net-pci' in the | |
1019 | * 'link' namespace would be 'link<virtio-net-pci>'. | |
1020 | * @get: The getter to be called to read a property. If this is NULL, then | |
1021 | * the property cannot be read. | |
1022 | * @set: the setter to be called to write a property. If this is NULL, | |
1023 | * then the property cannot be written. | |
1024 | * @release: called when the property is removed from the object. This is | |
1025 | * meant to allow a property to free its opaque upon object | |
1026 | * destruction. This may be NULL. | |
1027 | * @opaque: an opaque pointer to pass to the callbacks for the property | |
db57fef1 | 1028 | * @errp: pointer to error object |
64607d08 PB |
1029 | * |
1030 | * Returns: The #ObjectProperty; this can be used to set the @resolve | |
1031 | * callback for child and link properties. | |
57c9fafe | 1032 | */ |
db57fef1 EA |
1033 | ObjectProperty *object_property_try_add(Object *obj, const char *name, |
1034 | const char *type, | |
1035 | ObjectPropertyAccessor *get, | |
1036 | ObjectPropertyAccessor *set, | |
1037 | ObjectPropertyRelease *release, | |
1038 | void *opaque, Error **errp); | |
1039 | ||
1040 | /** | |
1041 | * object_property_add: | |
1042 | * Same as object_property_try_add() with @errp hardcoded to | |
1043 | * &error_abort. | |
1827c35b EH |
1044 | * |
1045 | * @obj: the object to add a property to | |
1046 | * @name: the name of the property. This can contain any character except for | |
1047 | * a forward slash. In general, you should use hyphens '-' instead of | |
1048 | * underscores '_' when naming properties. | |
1049 | * @type: the type name of the property. This namespace is pretty loosely | |
1050 | * defined. Sub namespaces are constructed by using a prefix and then | |
1051 | * to angle brackets. For instance, the type 'virtio-net-pci' in the | |
1052 | * 'link' namespace would be 'link<virtio-net-pci>'. | |
1053 | * @get: The getter to be called to read a property. If this is NULL, then | |
1054 | * the property cannot be read. | |
1055 | * @set: the setter to be called to write a property. If this is NULL, | |
1056 | * then the property cannot be written. | |
1057 | * @release: called when the property is removed from the object. This is | |
1058 | * meant to allow a property to free its opaque upon object | |
1059 | * destruction. This may be NULL. | |
1060 | * @opaque: an opaque pointer to pass to the callbacks for the property | |
db57fef1 | 1061 | */ |
64607d08 PB |
1062 | ObjectProperty *object_property_add(Object *obj, const char *name, |
1063 | const char *type, | |
1064 | ObjectPropertyAccessor *get, | |
1065 | ObjectPropertyAccessor *set, | |
1066 | ObjectPropertyRelease *release, | |
d2623129 | 1067 | void *opaque); |
57c9fafe | 1068 | |
df4fe0b2 | 1069 | void object_property_del(Object *obj, const char *name); |
57c9fafe | 1070 | |
16bf7f52 DB |
1071 | ObjectProperty *object_class_property_add(ObjectClass *klass, const char *name, |
1072 | const char *type, | |
1073 | ObjectPropertyAccessor *get, | |
1074 | ObjectPropertyAccessor *set, | |
1075 | ObjectPropertyRelease *release, | |
d2623129 | 1076 | void *opaque); |
16bf7f52 | 1077 | |
0e76ed0a MAL |
1078 | /** |
1079 | * object_property_set_default_bool: | |
1080 | * @prop: the property to set | |
1081 | * @value: the value to be written to the property | |
1082 | * | |
1083 | * Set the property default value. | |
1084 | */ | |
1085 | void object_property_set_default_bool(ObjectProperty *prop, bool value); | |
1086 | ||
1087 | /** | |
1088 | * object_property_set_default_str: | |
1089 | * @prop: the property to set | |
1090 | * @value: the value to be written to the property | |
1091 | * | |
1092 | * Set the property default value. | |
1093 | */ | |
1094 | void object_property_set_default_str(ObjectProperty *prop, const char *value); | |
1095 | ||
125062e7 KW |
1096 | /** |
1097 | * object_property_set_default_list: | |
1098 | * @prop: the property to set | |
1099 | * | |
1100 | * Set the property default value to be an empty list. | |
1101 | */ | |
1102 | void object_property_set_default_list(ObjectProperty *prop); | |
1103 | ||
0e76ed0a MAL |
1104 | /** |
1105 | * object_property_set_default_int: | |
1106 | * @prop: the property to set | |
1107 | * @value: the value to be written to the property | |
1108 | * | |
1109 | * Set the property default value. | |
1110 | */ | |
1111 | void object_property_set_default_int(ObjectProperty *prop, int64_t value); | |
1112 | ||
1113 | /** | |
1114 | * object_property_set_default_uint: | |
1115 | * @prop: the property to set | |
1116 | * @value: the value to be written to the property | |
1117 | * | |
1118 | * Set the property default value. | |
1119 | */ | |
1120 | void object_property_set_default_uint(ObjectProperty *prop, uint64_t value); | |
1121 | ||
8cb6789a PB |
1122 | /** |
1123 | * object_property_find: | |
1124 | * @obj: the object | |
1125 | * @name: the name of the property | |
efba1595 DB |
1126 | * |
1127 | * Look up a property for an object. | |
1128 | * | |
1129 | * Return its #ObjectProperty if found, or NULL. | |
1130 | */ | |
1131 | ObjectProperty *object_property_find(Object *obj, const char *name); | |
1132 | ||
1133 | /** | |
1134 | * object_property_find_err: | |
1135 | * @obj: the object | |
1136 | * @name: the name of the property | |
89bfe000 | 1137 | * @errp: returns an error if this function fails |
8cb6789a | 1138 | * |
efba1595 DB |
1139 | * Look up a property for an object. |
1140 | * | |
1141 | * Return its #ObjectProperty if found, or NULL. | |
1142 | */ | |
1143 | ObjectProperty *object_property_find_err(Object *obj, | |
1144 | const char *name, | |
1145 | Error **errp); | |
1146 | ||
1147 | /** | |
1148 | * object_class_property_find: | |
1149 | * @klass: the object class | |
1150 | * @name: the name of the property | |
1151 | * | |
1152 | * Look up a property for an object class. | |
1153 | * | |
1154 | * Return its #ObjectProperty if found, or NULL. | |
1155 | */ | |
1156 | ObjectProperty *object_class_property_find(ObjectClass *klass, | |
1157 | const char *name); | |
1158 | ||
1159 | /** | |
1160 | * object_class_property_find_err: | |
1161 | * @klass: the object class | |
1162 | * @name: the name of the property | |
1163 | * @errp: returns an error if this function fails | |
1164 | * | |
1165 | * Look up a property for an object class. | |
1166 | * | |
1167 | * Return its #ObjectProperty if found, or NULL. | |
8cb6789a | 1168 | */ |
efba1595 DB |
1169 | ObjectProperty *object_class_property_find_err(ObjectClass *klass, |
1170 | const char *name, | |
1171 | Error **errp); | |
8cb6789a | 1172 | |
7746abd8 DB |
1173 | typedef struct ObjectPropertyIterator { |
1174 | ObjectClass *nextclass; | |
1175 | GHashTableIter iter; | |
1176 | } ObjectPropertyIterator; | |
a00c9482 DB |
1177 | |
1178 | /** | |
1179 | * object_property_iter_init: | |
1827c35b | 1180 | * @iter: the iterator instance |
a00c9482 DB |
1181 | * @obj: the object |
1182 | * | |
1183 | * Initializes an iterator for traversing all properties | |
16bf7f52 | 1184 | * registered against an object instance, its class and all parent classes. |
a00c9482 DB |
1185 | * |
1186 | * It is forbidden to modify the property list while iterating, | |
1187 | * whether removing or adding properties. | |
1188 | * | |
1189 | * Typical usage pattern would be | |
1190 | * | |
6cf164c0 EH |
1191 | * .. code-block:: c |
1192 | * :caption: Using object property iterators | |
1193 | * | |
9bbfd245 EH |
1194 | * ObjectProperty *prop; |
1195 | * ObjectPropertyIterator iter; | |
1196 | * | |
1197 | * object_property_iter_init(&iter, obj); | |
1198 | * while ((prop = object_property_iter_next(&iter))) { | |
1199 | * ... do something with prop ... | |
1200 | * } | |
a00c9482 | 1201 | */ |
7746abd8 DB |
1202 | void object_property_iter_init(ObjectPropertyIterator *iter, |
1203 | Object *obj); | |
a00c9482 | 1204 | |
961c47bb AK |
1205 | /** |
1206 | * object_class_property_iter_init: | |
1827c35b | 1207 | * @iter: the iterator instance |
961c47bb AK |
1208 | * @klass: the class |
1209 | * | |
1210 | * Initializes an iterator for traversing all properties | |
1211 | * registered against an object class and all parent classes. | |
1212 | * | |
1213 | * It is forbidden to modify the property list while iterating, | |
1214 | * whether removing or adding properties. | |
1215 | * | |
1216 | * This can be used on abstract classes as it does not create a temporary | |
1217 | * instance. | |
1218 | */ | |
1219 | void object_class_property_iter_init(ObjectPropertyIterator *iter, | |
1220 | ObjectClass *klass); | |
1221 | ||
a00c9482 DB |
1222 | /** |
1223 | * object_property_iter_next: | |
1224 | * @iter: the iterator instance | |
1225 | * | |
7746abd8 DB |
1226 | * Return the next available property. If no further properties |
1227 | * are available, a %NULL value will be returned and the @iter | |
1228 | * pointer should not be used again after this point without | |
1229 | * re-initializing it. | |
1230 | * | |
a00c9482 DB |
1231 | * Returns: the next property, or %NULL when all properties |
1232 | * have been traversed. | |
1233 | */ | |
1234 | ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter); | |
1235 | ||
57c9fafe AL |
1236 | void object_unparent(Object *obj); |
1237 | ||
1238 | /** | |
1239 | * object_property_get: | |
1240 | * @obj: the object | |
5325cc34 | 1241 | * @name: the name of the property |
57c9fafe AL |
1242 | * @v: the visitor that will receive the property value. This should be an |
1243 | * Output visitor and the data will be written with @name as the name. | |
57c9fafe AL |
1244 | * @errp: returns an error if this function fails |
1245 | * | |
1246 | * Reads a property from a object. | |
6fd5bef1 MA |
1247 | * |
1248 | * Returns: %true on success, %false on failure. | |
57c9fafe | 1249 | */ |
6fd5bef1 | 1250 | bool object_property_get(Object *obj, const char *name, Visitor *v, |
e82df248 | 1251 | Error **errp); |
57c9fafe | 1252 | |
7b7b7d18 PB |
1253 | /** |
1254 | * object_property_set_str: | |
1827c35b | 1255 | * @obj: the object |
7b7b7d18 | 1256 | * @name: the name of the property |
5325cc34 | 1257 | * @value: the value to be written to the property |
7b7b7d18 PB |
1258 | * @errp: returns an error if this function fails |
1259 | * | |
1260 | * Writes a string value to a property. | |
6fd5bef1 MA |
1261 | * |
1262 | * Returns: %true on success, %false on failure. | |
7b7b7d18 | 1263 | */ |
6fd5bef1 | 1264 | bool object_property_set_str(Object *obj, const char *name, |
5325cc34 | 1265 | const char *value, Error **errp); |
7b7b7d18 PB |
1266 | |
1267 | /** | |
1268 | * object_property_get_str: | |
1269 | * @obj: the object | |
1270 | * @name: the name of the property | |
1271 | * @errp: returns an error if this function fails | |
1272 | * | |
1273 | * Returns: the value of the property, converted to a C string, or NULL if | |
1274 | * an error occurs (including when the property value is not a string). | |
1275 | * The caller should free the string. | |
1276 | */ | |
1277 | char *object_property_get_str(Object *obj, const char *name, | |
e82df248 | 1278 | Error **errp); |
7b7b7d18 | 1279 | |
1d9c5a12 PB |
1280 | /** |
1281 | * object_property_set_link: | |
1827c35b | 1282 | * @obj: the object |
1d9c5a12 | 1283 | * @name: the name of the property |
5325cc34 | 1284 | * @value: the value to be written to the property |
1d9c5a12 PB |
1285 | * @errp: returns an error if this function fails |
1286 | * | |
1287 | * Writes an object's canonical path to a property. | |
265b578c MAL |
1288 | * |
1289 | * If the link property was created with | |
b99e80cb | 1290 | * %OBJ_PROP_LINK_STRONG bit, the old target object is |
265b578c MAL |
1291 | * unreferenced, and a reference is added to the new target object. |
1292 | * | |
6fd5bef1 | 1293 | * Returns: %true on success, %false on failure. |
1d9c5a12 | 1294 | */ |
6fd5bef1 | 1295 | bool object_property_set_link(Object *obj, const char *name, |
5325cc34 | 1296 | Object *value, Error **errp); |
1d9c5a12 PB |
1297 | |
1298 | /** | |
1299 | * object_property_get_link: | |
1300 | * @obj: the object | |
1301 | * @name: the name of the property | |
1302 | * @errp: returns an error if this function fails | |
1303 | * | |
1304 | * Returns: the value of the property, resolved from a path to an Object, | |
1305 | * or NULL if an error occurs (including when the property value is not a | |
1306 | * string or not a valid object path). | |
1307 | */ | |
1308 | Object *object_property_get_link(Object *obj, const char *name, | |
e82df248 | 1309 | Error **errp); |
1d9c5a12 | 1310 | |
7b7b7d18 PB |
1311 | /** |
1312 | * object_property_set_bool: | |
1827c35b | 1313 | * @obj: the object |
7b7b7d18 | 1314 | * @name: the name of the property |
5325cc34 | 1315 | * @value: the value to be written to the property |
7b7b7d18 PB |
1316 | * @errp: returns an error if this function fails |
1317 | * | |
1318 | * Writes a bool value to a property. | |
6fd5bef1 MA |
1319 | * |
1320 | * Returns: %true on success, %false on failure. | |
7b7b7d18 | 1321 | */ |
6fd5bef1 | 1322 | bool object_property_set_bool(Object *obj, const char *name, |
5325cc34 | 1323 | bool value, Error **errp); |
7b7b7d18 PB |
1324 | |
1325 | /** | |
1326 | * object_property_get_bool: | |
1327 | * @obj: the object | |
1328 | * @name: the name of the property | |
1329 | * @errp: returns an error if this function fails | |
1330 | * | |
a21e6607 | 1331 | * Returns: the value of the property, converted to a boolean, or false if |
7b7b7d18 PB |
1332 | * an error occurs (including when the property value is not a bool). |
1333 | */ | |
1334 | bool object_property_get_bool(Object *obj, const char *name, | |
e82df248 | 1335 | Error **errp); |
7b7b7d18 PB |
1336 | |
1337 | /** | |
1338 | * object_property_set_int: | |
1827c35b | 1339 | * @obj: the object |
7b7b7d18 | 1340 | * @name: the name of the property |
5325cc34 | 1341 | * @value: the value to be written to the property |
7b7b7d18 PB |
1342 | * @errp: returns an error if this function fails |
1343 | * | |
1344 | * Writes an integer value to a property. | |
6fd5bef1 MA |
1345 | * |
1346 | * Returns: %true on success, %false on failure. | |
7b7b7d18 | 1347 | */ |
6fd5bef1 | 1348 | bool object_property_set_int(Object *obj, const char *name, |
5325cc34 | 1349 | int64_t value, Error **errp); |
7b7b7d18 PB |
1350 | |
1351 | /** | |
1352 | * object_property_get_int: | |
1353 | * @obj: the object | |
1354 | * @name: the name of the property | |
1355 | * @errp: returns an error if this function fails | |
1356 | * | |
a21e6607 | 1357 | * Returns: the value of the property, converted to an integer, or -1 if |
7b7b7d18 PB |
1358 | * an error occurs (including when the property value is not an integer). |
1359 | */ | |
1360 | int64_t object_property_get_int(Object *obj, const char *name, | |
e82df248 | 1361 | Error **errp); |
7b7b7d18 | 1362 | |
3152779c MAL |
1363 | /** |
1364 | * object_property_set_uint: | |
1827c35b | 1365 | * @obj: the object |
3152779c | 1366 | * @name: the name of the property |
5325cc34 | 1367 | * @value: the value to be written to the property |
3152779c MAL |
1368 | * @errp: returns an error if this function fails |
1369 | * | |
1370 | * Writes an unsigned integer value to a property. | |
6fd5bef1 MA |
1371 | * |
1372 | * Returns: %true on success, %false on failure. | |
3152779c | 1373 | */ |
6fd5bef1 | 1374 | bool object_property_set_uint(Object *obj, const char *name, |
5325cc34 | 1375 | uint64_t value, Error **errp); |
3152779c MAL |
1376 | |
1377 | /** | |
1378 | * object_property_get_uint: | |
1379 | * @obj: the object | |
1380 | * @name: the name of the property | |
1381 | * @errp: returns an error if this function fails | |
1382 | * | |
1383 | * Returns: the value of the property, converted to an unsigned integer, or 0 | |
1384 | * an error occurs (including when the property value is not an integer). | |
1385 | */ | |
1386 | uint64_t object_property_get_uint(Object *obj, const char *name, | |
1387 | Error **errp); | |
1388 | ||
1f21772d HT |
1389 | /** |
1390 | * object_property_get_enum: | |
1391 | * @obj: the object | |
1392 | * @name: the name of the property | |
a3590dac | 1393 | * @typename: the name of the enum data type |
1f21772d HT |
1394 | * @errp: returns an error if this function fails |
1395 | * | |
d20f616e MA |
1396 | * Returns: the value of the property, converted to an integer (which |
1397 | * can't be negative), or -1 on error (including when the property | |
1398 | * value is not an enum). | |
1f21772d HT |
1399 | */ |
1400 | int object_property_get_enum(Object *obj, const char *name, | |
a3590dac | 1401 | const char *typename, Error **errp); |
1f21772d | 1402 | |
57c9fafe AL |
1403 | /** |
1404 | * object_property_set: | |
1405 | * @obj: the object | |
5325cc34 | 1406 | * @name: the name of the property |
57c9fafe AL |
1407 | * @v: the visitor that will be used to write the property value. This should |
1408 | * be an Input visitor and the data will be first read with @name as the | |
1409 | * name and then written as the property value. | |
57c9fafe AL |
1410 | * @errp: returns an error if this function fails |
1411 | * | |
1412 | * Writes a property to a object. | |
6fd5bef1 MA |
1413 | * |
1414 | * Returns: %true on success, %false on failure. | |
57c9fafe | 1415 | */ |
6fd5bef1 | 1416 | bool object_property_set(Object *obj, const char *name, Visitor *v, |
e82df248 | 1417 | Error **errp); |
57c9fafe | 1418 | |
b2cd7dee PB |
1419 | /** |
1420 | * object_property_parse: | |
1421 | * @obj: the object | |
b2cd7dee | 1422 | * @name: the name of the property |
5325cc34 | 1423 | * @string: the string that will be used to parse the property value. |
b2cd7dee PB |
1424 | * @errp: returns an error if this function fails |
1425 | * | |
1426 | * Parses a string and writes the result into a property of an object. | |
6fd5bef1 MA |
1427 | * |
1428 | * Returns: %true on success, %false on failure. | |
b2cd7dee | 1429 | */ |
6fd5bef1 | 1430 | bool object_property_parse(Object *obj, const char *name, |
5325cc34 | 1431 | const char *string, Error **errp); |
b2cd7dee PB |
1432 | |
1433 | /** | |
1434 | * object_property_print: | |
1435 | * @obj: the object | |
1436 | * @name: the name of the property | |
0b7593e0 | 1437 | * @human: if true, print for human consumption |
b2cd7dee PB |
1438 | * @errp: returns an error if this function fails |
1439 | * | |
1440 | * Returns a string representation of the value of the property. The | |
1441 | * caller shall free the string. | |
1442 | */ | |
0b7593e0 | 1443 | char *object_property_print(Object *obj, const char *name, bool human, |
e82df248 | 1444 | Error **errp); |
b2cd7dee | 1445 | |
57c9fafe | 1446 | /** |
438e1c79 | 1447 | * object_property_get_type: |
57c9fafe AL |
1448 | * @obj: the object |
1449 | * @name: the name of the property | |
1450 | * @errp: returns an error if this function fails | |
1451 | * | |
1452 | * Returns: The type name of the property. | |
1453 | */ | |
1454 | const char *object_property_get_type(Object *obj, const char *name, | |
e82df248 | 1455 | Error **errp); |
57c9fafe AL |
1456 | |
1457 | /** | |
1458 | * object_get_root: | |
1459 | * | |
1460 | * Returns: the root object of the composition tree | |
1461 | */ | |
1462 | Object *object_get_root(void); | |
1463 | ||
bc2256c4 DB |
1464 | |
1465 | /** | |
1466 | * object_get_objects_root: | |
1467 | * | |
1468 | * Get the container object that holds user created | |
1469 | * object instances. This is the object at path | |
1470 | * "/objects" | |
1471 | * | |
1472 | * Returns: the user object container | |
1473 | */ | |
1474 | Object *object_get_objects_root(void); | |
1475 | ||
7c47c4ea PX |
1476 | /** |
1477 | * object_get_internal_root: | |
1478 | * | |
1479 | * Get the container object that holds internally used object | |
1480 | * instances. Any object which is put into this container must not be | |
1481 | * user visible, and it will not be exposed in the QOM tree. | |
1482 | * | |
1483 | * Returns: the internal object container | |
1484 | */ | |
1485 | Object *object_get_internal_root(void); | |
1486 | ||
11f590b1 SH |
1487 | /** |
1488 | * object_get_canonical_path_component: | |
1827c35b | 1489 | * @obj: the object |
11f590b1 SH |
1490 | * |
1491 | * Returns: The final component in the object's canonical path. The canonical | |
1492 | * path is the path within the composition tree starting from the root. | |
770dec26 | 1493 | * %NULL if the object doesn't have a parent (and thus a canonical path). |
11f590b1 | 1494 | */ |
7a309cc9 | 1495 | const char *object_get_canonical_path_component(const Object *obj); |
11f590b1 | 1496 | |
57c9fafe AL |
1497 | /** |
1498 | * object_get_canonical_path: | |
1827c35b | 1499 | * @obj: the object |
57c9fafe | 1500 | * |
5bd929d2 MA |
1501 | * Returns: The canonical path for a object, newly allocated. This is |
1502 | * the path within the composition tree starting from the root. Use | |
1503 | * g_free() to free it. | |
57c9fafe | 1504 | */ |
e8512dfa | 1505 | char *object_get_canonical_path(const Object *obj); |
57c9fafe AL |
1506 | |
1507 | /** | |
1508 | * object_resolve_path: | |
1509 | * @path: the path to resolve | |
1510 | * @ambiguous: returns true if the path resolution failed because of an | |
1511 | * ambiguous match | |
1512 | * | |
1513 | * There are two types of supported paths--absolute paths and partial paths. | |
1514 | * | |
1515 | * Absolute paths are derived from the root object and can follow child<> or | |
1516 | * link<> properties. Since they can follow link<> properties, they can be | |
1517 | * arbitrarily long. Absolute paths look like absolute filenames and are | |
1518 | * prefixed with a leading slash. | |
1519 | * | |
1520 | * Partial paths look like relative filenames. They do not begin with a | |
1521 | * prefix. The matching rules for partial paths are subtle but designed to make | |
1522 | * specifying objects easy. At each level of the composition tree, the partial | |
1523 | * path is matched as an absolute path. The first match is not returned. At | |
1524 | * least two matches are searched for. A successful result is only returned if | |
02fe2db6 PB |
1525 | * only one match is found. If more than one match is found, a flag is |
1526 | * returned to indicate that the match was ambiguous. | |
57c9fafe AL |
1527 | * |
1528 | * Returns: The matched object or NULL on path lookup failure. | |
1529 | */ | |
1530 | Object *object_resolve_path(const char *path, bool *ambiguous); | |
1531 | ||
02fe2db6 PB |
1532 | /** |
1533 | * object_resolve_path_type: | |
1534 | * @path: the path to resolve | |
1535 | * @typename: the type to look for. | |
1536 | * @ambiguous: returns true if the path resolution failed because of an | |
1537 | * ambiguous match | |
1538 | * | |
1539 | * This is similar to object_resolve_path. However, when looking for a | |
1540 | * partial path only matches that implement the given type are considered. | |
1541 | * This restricts the search and avoids spuriously flagging matches as | |
1542 | * ambiguous. | |
1543 | * | |
1544 | * For both partial and absolute paths, the return value goes through | |
1545 | * a dynamic cast to @typename. This is important if either the link, | |
1546 | * or the typename itself are of interface types. | |
1547 | * | |
1548 | * Returns: The matched object or NULL on path lookup failure. | |
1549 | */ | |
1550 | Object *object_resolve_path_type(const char *path, const char *typename, | |
1551 | bool *ambiguous); | |
1552 | ||
1bf4d329 MA |
1553 | /** |
1554 | * object_resolve_path_at: | |
1555 | * @parent: the object in which to resolve the path | |
1556 | * @path: the path to resolve | |
1557 | * | |
1558 | * This is like object_resolve_path(), except paths not starting with | |
1559 | * a slash are relative to @parent. | |
1560 | * | |
1561 | * Returns: The resolved object or NULL on path lookup failure. | |
1562 | */ | |
1563 | Object *object_resolve_path_at(Object *parent, const char *path); | |
1564 | ||
a612b2a6 PB |
1565 | /** |
1566 | * object_resolve_path_component: | |
1567 | * @parent: the object in which to resolve the path | |
1568 | * @part: the component to resolve. | |
1569 | * | |
1570 | * This is similar to object_resolve_path with an absolute path, but it | |
1571 | * only resolves one element (@part) and takes the others from @parent. | |
1572 | * | |
1573 | * Returns: The resolved object or NULL on path lookup failure. | |
1574 | */ | |
ddfb0baa | 1575 | Object *object_resolve_path_component(Object *parent, const char *part); |
a612b2a6 | 1576 | |
57c9fafe | 1577 | /** |
db57fef1 | 1578 | * object_property_try_add_child: |
57c9fafe AL |
1579 | * @obj: the object to add a property to |
1580 | * @name: the name of the property | |
1581 | * @child: the child object | |
db57fef1 | 1582 | * @errp: pointer to error object |
57c9fafe AL |
1583 | * |
1584 | * Child properties form the composition tree. All objects need to be a child | |
1585 | * of another object. Objects can only be a child of one object. | |
1586 | * | |
1587 | * There is no way for a child to determine what its parent is. It is not | |
1588 | * a bidirectional relationship. This is by design. | |
358b5465 AB |
1589 | * |
1590 | * The value of a child property as a C string will be the child object's | |
1591 | * canonical path. It can be retrieved using object_property_get_str(). | |
1592 | * The child object itself can be retrieved using object_property_get_link(). | |
70251887 MA |
1593 | * |
1594 | * Returns: The newly added property on success, or %NULL on failure. | |
57c9fafe | 1595 | */ |
db57fef1 EA |
1596 | ObjectProperty *object_property_try_add_child(Object *obj, const char *name, |
1597 | Object *child, Error **errp); | |
1598 | ||
1599 | /** | |
1600 | * object_property_add_child: | |
1827c35b EH |
1601 | * @obj: the object to add a property to |
1602 | * @name: the name of the property | |
1603 | * @child: the child object | |
1604 | * | |
db57fef1 EA |
1605 | * Same as object_property_try_add_child() with @errp hardcoded to |
1606 | * &error_abort | |
1607 | */ | |
70251887 | 1608 | ObjectProperty *object_property_add_child(Object *obj, const char *name, |
d2623129 | 1609 | Object *child); |
57c9fafe | 1610 | |
9561fda8 SH |
1611 | typedef enum { |
1612 | /* Unref the link pointer when the property is deleted */ | |
265b578c | 1613 | OBJ_PROP_LINK_STRONG = 0x1, |
9941d37b MAL |
1614 | |
1615 | /* private */ | |
1616 | OBJ_PROP_LINK_DIRECT = 0x2, | |
840ecdfb | 1617 | OBJ_PROP_LINK_CLASS = 0x4, |
9561fda8 SH |
1618 | } ObjectPropertyLinkFlags; |
1619 | ||
39f72ef9 SH |
1620 | /** |
1621 | * object_property_allow_set_link: | |
1827c35b EH |
1622 | * @obj: the object to add a property to |
1623 | * @name: the name of the property | |
1624 | * @child: the child object | |
1625 | * @errp: pointer to error object | |
39f72ef9 SH |
1626 | * |
1627 | * The default implementation of the object_property_add_link() check() | |
1628 | * callback function. It allows the link property to be set and never returns | |
1629 | * an error. | |
1630 | */ | |
1827c35b EH |
1631 | void object_property_allow_set_link(const Object *obj, const char *name, |
1632 | Object *child, Error **errp); | |
39f72ef9 | 1633 | |
57c9fafe AL |
1634 | /** |
1635 | * object_property_add_link: | |
1636 | * @obj: the object to add a property to | |
1637 | * @name: the name of the property | |
1638 | * @type: the qobj type of the link | |
36854207 | 1639 | * @targetp: a pointer to where the link object reference is stored |
39f72ef9 | 1640 | * @check: callback to veto setting or NULL if the property is read-only |
9561fda8 | 1641 | * @flags: additional options for the link |
57c9fafe AL |
1642 | * |
1643 | * Links establish relationships between objects. Links are unidirectional | |
1644 | * although two links can be combined to form a bidirectional relationship | |
1645 | * between objects. | |
1646 | * | |
1647 | * Links form the graph in the object model. | |
6c232d2f | 1648 | * |
b99e80cb | 1649 | * The @check() callback is invoked when |
39f72ef9 | 1650 | * object_property_set_link() is called and can raise an error to prevent the |
b99e80cb | 1651 | * link being set. If @check is NULL, the property is read-only |
39f72ef9 SH |
1652 | * and cannot be set. |
1653 | * | |
6c232d2f | 1654 | * Ownership of the pointer that @child points to is transferred to the |
b99e80cb | 1655 | * link property. The reference count for *@child is |
6c232d2f | 1656 | * managed by the property from after the function returns till the |
9561fda8 | 1657 | * property is deleted with object_property_del(). If the |
b99e80cb | 1658 | * @flags %OBJ_PROP_LINK_STRONG bit is set, |
265b578c MAL |
1659 | * the reference count is decremented when the property is deleted or |
1660 | * modified. | |
70251887 MA |
1661 | * |
1662 | * Returns: The newly added property on success, or %NULL on failure. | |
57c9fafe | 1663 | */ |
70251887 | 1664 | ObjectProperty *object_property_add_link(Object *obj, const char *name, |
36854207 | 1665 | const char *type, Object **targetp, |
8f5d58ef | 1666 | void (*check)(const Object *obj, const char *name, |
39f72ef9 | 1667 | Object *val, Error **errp), |
d2623129 | 1668 | ObjectPropertyLinkFlags flags); |
57c9fafe | 1669 | |
840ecdfb MAL |
1670 | ObjectProperty *object_class_property_add_link(ObjectClass *oc, |
1671 | const char *name, | |
1672 | const char *type, ptrdiff_t offset, | |
1673 | void (*check)(const Object *obj, const char *name, | |
1674 | Object *val, Error **errp), | |
d2623129 | 1675 | ObjectPropertyLinkFlags flags); |
840ecdfb | 1676 | |
57c9fafe AL |
1677 | /** |
1678 | * object_property_add_str: | |
1679 | * @obj: the object to add a property to | |
1680 | * @name: the name of the property | |
1681 | * @get: the getter or NULL if the property is write-only. This function must | |
1682 | * return a string to be freed by g_free(). | |
1683 | * @set: the setter or NULL if the property is read-only | |
57c9fafe AL |
1684 | * |
1685 | * Add a string property using getters/setters. This function will add a | |
1686 | * property of type 'string'. | |
70251887 MA |
1687 | * |
1688 | * Returns: The newly added property on success, or %NULL on failure. | |
57c9fafe | 1689 | */ |
70251887 | 1690 | ObjectProperty *object_property_add_str(Object *obj, const char *name, |
e82df248 | 1691 | char *(*get)(Object *, Error **), |
d2623129 | 1692 | void (*set)(Object *, const char *, Error **)); |
2f28d2ff | 1693 | |
a3a16211 MAL |
1694 | ObjectProperty *object_class_property_add_str(ObjectClass *klass, |
1695 | const char *name, | |
16bf7f52 DB |
1696 | char *(*get)(Object *, Error **), |
1697 | void (*set)(Object *, const char *, | |
d2623129 | 1698 | Error **)); |
16bf7f52 | 1699 | |
0e558843 AL |
1700 | /** |
1701 | * object_property_add_bool: | |
1702 | * @obj: the object to add a property to | |
1703 | * @name: the name of the property | |
1704 | * @get: the getter or NULL if the property is write-only. | |
1705 | * @set: the setter or NULL if the property is read-only | |
0e558843 AL |
1706 | * |
1707 | * Add a bool property using getters/setters. This function will add a | |
1708 | * property of type 'bool'. | |
70251887 MA |
1709 | * |
1710 | * Returns: The newly added property on success, or %NULL on failure. | |
0e558843 | 1711 | */ |
70251887 | 1712 | ObjectProperty *object_property_add_bool(Object *obj, const char *name, |
e82df248 | 1713 | bool (*get)(Object *, Error **), |
d2623129 | 1714 | void (*set)(Object *, bool, Error **)); |
0e558843 | 1715 | |
a3a16211 MAL |
1716 | ObjectProperty *object_class_property_add_bool(ObjectClass *klass, |
1717 | const char *name, | |
16bf7f52 | 1718 | bool (*get)(Object *, Error **), |
d2623129 | 1719 | void (*set)(Object *, bool, Error **)); |
16bf7f52 | 1720 | |
a8e3fbed DB |
1721 | /** |
1722 | * object_property_add_enum: | |
1723 | * @obj: the object to add a property to | |
1724 | * @name: the name of the property | |
1725 | * @typename: the name of the enum data type | |
1827c35b | 1726 | * @lookup: enum value namelookup table |
a8e3fbed DB |
1727 | * @get: the getter or %NULL if the property is write-only. |
1728 | * @set: the setter or %NULL if the property is read-only | |
a8e3fbed DB |
1729 | * |
1730 | * Add an enum property using getters/setters. This function will add a | |
1731 | * property of type '@typename'. | |
70251887 MA |
1732 | * |
1733 | * Returns: The newly added property on success, or %NULL on failure. | |
a8e3fbed | 1734 | */ |
70251887 | 1735 | ObjectProperty *object_property_add_enum(Object *obj, const char *name, |
a8e3fbed | 1736 | const char *typename, |
f7abe0ec | 1737 | const QEnumLookup *lookup, |
a8e3fbed | 1738 | int (*get)(Object *, Error **), |
d2623129 | 1739 | void (*set)(Object *, int, Error **)); |
a8e3fbed | 1740 | |
a3a16211 MAL |
1741 | ObjectProperty *object_class_property_add_enum(ObjectClass *klass, |
1742 | const char *name, | |
16bf7f52 | 1743 | const char *typename, |
f7abe0ec | 1744 | const QEnumLookup *lookup, |
16bf7f52 | 1745 | int (*get)(Object *, Error **), |
d2623129 | 1746 | void (*set)(Object *, int, Error **)); |
16bf7f52 | 1747 | |
8e099d14 DG |
1748 | /** |
1749 | * object_property_add_tm: | |
1750 | * @obj: the object to add a property to | |
1751 | * @name: the name of the property | |
1752 | * @get: the getter or NULL if the property is write-only. | |
8e099d14 DG |
1753 | * |
1754 | * Add a read-only struct tm valued property using a getter function. | |
1755 | * This function will add a property of type 'struct tm'. | |
70251887 MA |
1756 | * |
1757 | * Returns: The newly added property on success, or %NULL on failure. | |
8e099d14 | 1758 | */ |
70251887 | 1759 | ObjectProperty *object_property_add_tm(Object *obj, const char *name, |
d2623129 | 1760 | void (*get)(Object *, struct tm *, Error **)); |
8e099d14 | 1761 | |
a3a16211 | 1762 | ObjectProperty *object_class_property_add_tm(ObjectClass *klass, |
d2623129 MA |
1763 | const char *name, |
1764 | void (*get)(Object *, struct tm *, Error **)); | |
16bf7f52 | 1765 | |
836e1b38 FF |
1766 | typedef enum { |
1767 | /* Automatically add a getter to the property */ | |
1768 | OBJ_PROP_FLAG_READ = 1 << 0, | |
1769 | /* Automatically add a setter to the property */ | |
1770 | OBJ_PROP_FLAG_WRITE = 1 << 1, | |
1771 | /* Automatically add a getter and a setter to the property */ | |
1772 | OBJ_PROP_FLAG_READWRITE = (OBJ_PROP_FLAG_READ | OBJ_PROP_FLAG_WRITE), | |
1773 | } ObjectPropertyFlags; | |
1774 | ||
a25ebcac MT |
1775 | /** |
1776 | * object_property_add_uint8_ptr: | |
1777 | * @obj: the object to add a property to | |
1778 | * @name: the name of the property | |
1779 | * @v: pointer to value | |
836e1b38 | 1780 | * @flags: bitwise-or'd ObjectPropertyFlags |
a25ebcac MT |
1781 | * |
1782 | * Add an integer property in memory. This function will add a | |
1783 | * property of type 'uint8'. | |
70251887 MA |
1784 | * |
1785 | * Returns: The newly added property on success, or %NULL on failure. | |
a25ebcac | 1786 | */ |
70251887 | 1787 | ObjectProperty *object_property_add_uint8_ptr(Object *obj, const char *name, |
d2623129 MA |
1788 | const uint8_t *v, |
1789 | ObjectPropertyFlags flags); | |
836e1b38 | 1790 | |
a3a16211 MAL |
1791 | ObjectProperty *object_class_property_add_uint8_ptr(ObjectClass *klass, |
1792 | const char *name, | |
836e1b38 | 1793 | const uint8_t *v, |
d2623129 | 1794 | ObjectPropertyFlags flags); |
a25ebcac MT |
1795 | |
1796 | /** | |
1797 | * object_property_add_uint16_ptr: | |
1798 | * @obj: the object to add a property to | |
1799 | * @name: the name of the property | |
1800 | * @v: pointer to value | |
836e1b38 | 1801 | * @flags: bitwise-or'd ObjectPropertyFlags |
a25ebcac MT |
1802 | * |
1803 | * Add an integer property in memory. This function will add a | |
1804 | * property of type 'uint16'. | |
70251887 MA |
1805 | * |
1806 | * Returns: The newly added property on success, or %NULL on failure. | |
a25ebcac | 1807 | */ |
70251887 | 1808 | ObjectProperty *object_property_add_uint16_ptr(Object *obj, const char *name, |
836e1b38 | 1809 | const uint16_t *v, |
d2623129 | 1810 | ObjectPropertyFlags flags); |
836e1b38 | 1811 | |
a3a16211 MAL |
1812 | ObjectProperty *object_class_property_add_uint16_ptr(ObjectClass *klass, |
1813 | const char *name, | |
836e1b38 | 1814 | const uint16_t *v, |
d2623129 | 1815 | ObjectPropertyFlags flags); |
a25ebcac MT |
1816 | |
1817 | /** | |
1818 | * object_property_add_uint32_ptr: | |
1819 | * @obj: the object to add a property to | |
1820 | * @name: the name of the property | |
1821 | * @v: pointer to value | |
836e1b38 | 1822 | * @flags: bitwise-or'd ObjectPropertyFlags |
a25ebcac MT |
1823 | * |
1824 | * Add an integer property in memory. This function will add a | |
1825 | * property of type 'uint32'. | |
70251887 MA |
1826 | * |
1827 | * Returns: The newly added property on success, or %NULL on failure. | |
a25ebcac | 1828 | */ |
70251887 | 1829 | ObjectProperty *object_property_add_uint32_ptr(Object *obj, const char *name, |
836e1b38 | 1830 | const uint32_t *v, |
d2623129 | 1831 | ObjectPropertyFlags flags); |
836e1b38 | 1832 | |
a3a16211 MAL |
1833 | ObjectProperty *object_class_property_add_uint32_ptr(ObjectClass *klass, |
1834 | const char *name, | |
836e1b38 | 1835 | const uint32_t *v, |
d2623129 | 1836 | ObjectPropertyFlags flags); |
a25ebcac MT |
1837 | |
1838 | /** | |
1839 | * object_property_add_uint64_ptr: | |
1840 | * @obj: the object to add a property to | |
1841 | * @name: the name of the property | |
1842 | * @v: pointer to value | |
836e1b38 | 1843 | * @flags: bitwise-or'd ObjectPropertyFlags |
a25ebcac MT |
1844 | * |
1845 | * Add an integer property in memory. This function will add a | |
1846 | * property of type 'uint64'. | |
70251887 MA |
1847 | * |
1848 | * Returns: The newly added property on success, or %NULL on failure. | |
a25ebcac | 1849 | */ |
70251887 | 1850 | ObjectProperty *object_property_add_uint64_ptr(Object *obj, const char *name, |
836e1b38 | 1851 | const uint64_t *v, |
d2623129 | 1852 | ObjectPropertyFlags flags); |
836e1b38 | 1853 | |
a3a16211 MAL |
1854 | ObjectProperty *object_class_property_add_uint64_ptr(ObjectClass *klass, |
1855 | const char *name, | |
836e1b38 | 1856 | const uint64_t *v, |
d2623129 | 1857 | ObjectPropertyFlags flags); |
a25ebcac | 1858 | |
ef7c7ff6 SH |
1859 | /** |
1860 | * object_property_add_alias: | |
1861 | * @obj: the object to add a property to | |
1862 | * @name: the name of the property | |
1863 | * @target_obj: the object to forward property access to | |
1864 | * @target_name: the name of the property on the forwarded object | |
ef7c7ff6 SH |
1865 | * |
1866 | * Add an alias for a property on an object. This function will add a property | |
1867 | * of the same type as the forwarded property. | |
1868 | * | |
b99e80cb | 1869 | * The caller must ensure that @target_obj stays alive as long as |
ef7c7ff6 SH |
1870 | * this property exists. In the case of a child object or an alias on the same |
1871 | * object this will be the case. For aliases to other objects the caller is | |
1872 | * responsible for taking a reference. | |
70251887 MA |
1873 | * |
1874 | * Returns: The newly added property on success, or %NULL on failure. | |
ef7c7ff6 | 1875 | */ |
70251887 | 1876 | ObjectProperty *object_property_add_alias(Object *obj, const char *name, |
d2623129 | 1877 | Object *target_obj, const char *target_name); |
ef7c7ff6 | 1878 | |
fb9e7e33 PB |
1879 | /** |
1880 | * object_property_add_const_link: | |
1881 | * @obj: the object to add a property to | |
1882 | * @name: the name of the property | |
1883 | * @target: the object to be referred by the link | |
fb9e7e33 PB |
1884 | * |
1885 | * Add an unmodifiable link for a property on an object. This function will | |
1886 | * add a property of type link<TYPE> where TYPE is the type of @target. | |
1887 | * | |
1888 | * The caller must ensure that @target stays alive as long as | |
1889 | * this property exists. In the case @target is a child of @obj, | |
1890 | * this will be the case. Otherwise, the caller is responsible for | |
1891 | * taking a reference. | |
70251887 MA |
1892 | * |
1893 | * Returns: The newly added property on success, or %NULL on failure. | |
fb9e7e33 | 1894 | */ |
70251887 | 1895 | ObjectProperty *object_property_add_const_link(Object *obj, const char *name, |
d2623129 | 1896 | Object *target); |
fb9e7e33 | 1897 | |
80742642 GA |
1898 | /** |
1899 | * object_property_set_description: | |
1900 | * @obj: the object owning the property | |
1901 | * @name: the name of the property | |
1902 | * @description: the description of the property on the object | |
80742642 GA |
1903 | * |
1904 | * Set an object property's description. | |
1905 | * | |
6fd5bef1 | 1906 | * Returns: %true on success, %false on failure. |
80742642 GA |
1907 | */ |
1908 | void object_property_set_description(Object *obj, const char *name, | |
7eecec7d | 1909 | const char *description); |
16bf7f52 | 1910 | void object_class_property_set_description(ObjectClass *klass, const char *name, |
7eecec7d | 1911 | const char *description); |
80742642 | 1912 | |
32efc535 PB |
1913 | /** |
1914 | * object_child_foreach: | |
1915 | * @obj: the object whose children will be navigated | |
1916 | * @fn: the iterator function to be called | |
1917 | * @opaque: an opaque value that will be passed to the iterator | |
1918 | * | |
1919 | * Call @fn passing each child of @obj and @opaque to it, until @fn returns | |
1920 | * non-zero. | |
1921 | * | |
b604a854 PF |
1922 | * It is forbidden to add or remove children from @obj from the @fn |
1923 | * callback. | |
1924 | * | |
32efc535 PB |
1925 | * Returns: The last value returned by @fn, or 0 if there is no child. |
1926 | */ | |
1927 | int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), | |
1928 | void *opaque); | |
1929 | ||
d714b8de PC |
1930 | /** |
1931 | * object_child_foreach_recursive: | |
1932 | * @obj: the object whose children will be navigated | |
1933 | * @fn: the iterator function to be called | |
1934 | * @opaque: an opaque value that will be passed to the iterator | |
1935 | * | |
1936 | * Call @fn passing each child of @obj and @opaque to it, until @fn returns | |
1937 | * non-zero. Calls recursively, all child nodes of @obj will also be passed | |
1938 | * all the way down to the leaf nodes of the tree. Depth first ordering. | |
1939 | * | |
b604a854 PF |
1940 | * It is forbidden to add or remove children from @obj (or its |
1941 | * child nodes) from the @fn callback. | |
1942 | * | |
d714b8de PC |
1943 | * Returns: The last value returned by @fn, or 0 if there is no child. |
1944 | */ | |
1945 | int object_child_foreach_recursive(Object *obj, | |
1946 | int (*fn)(Object *child, void *opaque), | |
1947 | void *opaque); | |
a612b2a6 PB |
1948 | /** |
1949 | * container_get: | |
dfe47e70 | 1950 | * @root: root of the #path, e.g., object_get_root() |
a612b2a6 PB |
1951 | * @path: path to the container |
1952 | * | |
1953 | * Return a container object whose path is @path. Create more containers | |
1954 | * along the path if necessary. | |
1955 | * | |
1956 | * Returns: the container object. | |
1957 | */ | |
dfe47e70 | 1958 | Object *container_get(Object *root, const char *path); |
a612b2a6 | 1959 | |
3f97b53a BR |
1960 | /** |
1961 | * object_type_get_instance_size: | |
1962 | * @typename: Name of the Type whose instance_size is required | |
1963 | * | |
1964 | * Returns the instance_size of the given @typename. | |
1965 | */ | |
1966 | size_t object_type_get_instance_size(const char *typename); | |
f60a1cdc | 1967 | |
4df81616 MAL |
1968 | /** |
1969 | * object_property_help: | |
1970 | * @name: the name of the property | |
1971 | * @type: the type of the property | |
1972 | * @defval: the default value | |
1973 | * @description: description of the property | |
1974 | * | |
1975 | * Returns: a user-friendly formatted string describing the property | |
1976 | * for help purposes. | |
1977 | */ | |
1978 | char *object_property_help(const char *name, const char *type, | |
1979 | QObject *defval, const char *description); | |
1980 | ||
f60a1cdc MAL |
1981 | G_DEFINE_AUTOPTR_CLEANUP_FUNC(Object, object_unref) |
1982 | ||
2f28d2ff | 1983 | #endif |