* See the COPYING file in the top-level directory.
*/
-#include "qemu/object.h"
+#include "qom/object.h"
#include "qemu-common.h"
-#include "qapi/qapi-visit-core.h"
+#include "qapi/visitor.h"
#include "qapi/string-input-visitor.h"
#include "qapi/string-output-visitor.h"
+#include "qapi/qmp/qerror.h"
+#include "trace.h"
/* TODO: replace QObject with a simpler visitor to avoid a dependency
* of the QOM core on QObject? */
-#include "qemu/qom-qobject.h"
-#include "qobject.h"
-#include "qbool.h"
-#include "qint.h"
-#include "qstring.h"
+#include "qom/qom-qobject.h"
+#include "qapi/qmp/qobject.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qint.h"
+#include "qapi/qmp/qstring.h"
#define MAX_INTERFACES 32
void *class_data;
void (*instance_init)(Object *obj);
+ void (*instance_post_init)(Object *obj);
void (*instance_finalize)(Object *obj);
bool abstract;
ti->class_data = info->class_data;
ti->instance_init = info->instance_init;
+ ti->instance_post_init = info->instance_post_init;
ti->instance_finalize = info->instance_finalize;
ti->abstract = info->abstract;
g_assert(parent->class_size <= ti->class_size);
memcpy(ti->class, parent->class, parent->class_size);
+ ti->class->interfaces = NULL;
for (e = parent->class->interfaces; e; e = e->next) {
ObjectClass *iface = e->data;
}
}
-void object_initialize_with_type(void *data, TypeImpl *type)
+static void object_post_init_with_type(Object *obj, TypeImpl *ti)
+{
+ if (ti->instance_post_init) {
+ ti->instance_post_init(obj);
+ }
+
+ if (type_has_parent(ti)) {
+ object_post_init_with_type(obj, type_get_parent(ti));
+ }
+}
+
+void object_initialize_with_type(void *data, size_t size, TypeImpl *type)
{
Object *obj = data;
g_assert(type->instance_size >= sizeof(Object));
g_assert(type->abstract == false);
+ g_assert(size >= type->instance_size);
memset(obj, 0, type->instance_size);
obj->class = type->class;
+ object_ref(obj);
QTAILQ_INIT(&obj->properties);
object_init_with_type(obj, type);
+ object_post_init_with_type(obj, type);
}
-void object_initialize(void *data, const char *typename)
+void object_initialize(void *data, size_t size, const char *typename)
{
TypeImpl *type = type_get_by_name(typename);
- object_initialize_with_type(data, type);
+ object_initialize_with_type(data, size, type);
}
static inline bool object_property_is_child(ObjectProperty *prop)
void object_unparent(Object *obj)
{
+ if (!obj->parent) {
+ return;
+ }
+
+ object_ref(obj);
+ if (obj->class->unparent) {
+ (obj->class->unparent)(obj);
+ }
if (obj->parent) {
object_property_del_child(obj->parent, obj, NULL);
}
+ object_unref(obj);
}
static void object_deinit(Object *obj, TypeImpl *type)
}
}
-void object_finalize(void *data)
+static void object_finalize(void *data)
{
Object *obj = data;
TypeImpl *ti = obj->class->type;
object_property_del_all(obj);
g_assert(obj->ref == 0);
+ if (obj->free) {
+ obj->free(obj);
+ }
}
Object *object_new_with_type(Type type)
type_initialize(type);
obj = g_malloc(type->instance_size);
- object_initialize_with_type(obj, type);
- object_ref(obj);
+ object_initialize_with_type(obj, type->instance_size, type);
+ obj->free = g_free;
return obj;
}
return object_new_with_type(ti);
}
-void object_delete(Object *obj)
-{
- object_unparent(obj);
- g_assert(obj->ref == 1);
- object_unref(obj);
- g_free(obj);
-}
-
Object *object_dynamic_cast(Object *obj, const char *typename)
{
- if (object_class_dynamic_cast(object_get_class(obj), typename)) {
+ if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
return obj;
}
return NULL;
}
-Object *object_dynamic_cast_assert(Object *obj, const char *typename)
+Object *object_dynamic_cast_assert(Object *obj, const char *typename,
+ const char *file, int line, const char *func)
{
+ trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
+ typename, file, line, func);
+
+#ifdef CONFIG_QOM_CAST_DEBUG
+ int i;
Object *inst;
+ for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
+ if (obj->class->cast_cache[i] == typename) {
+ goto out;
+ }
+ }
+
inst = object_dynamic_cast(obj, typename);
- if (!inst) {
- fprintf(stderr, "Object %p is not an instance of type %s\n",
- obj, typename);
+ if (!inst && obj) {
+ fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
+ file, line, func, obj, typename);
abort();
}
- return inst;
+ assert(obj == inst);
+
+ if (obj && obj == inst) {
+ for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
+ obj->class->cast_cache[i - 1] = obj->class->cast_cache[i];
+ }
+ obj->class->cast_cache[i - 1] = typename;
+ }
+
+out:
+#endif
+ return obj;
}
ObjectClass *object_class_dynamic_cast(ObjectClass *class,
const char *typename)
{
- TypeImpl *target_type = type_get_by_name(typename);
- TypeImpl *type = class->type;
ObjectClass *ret = NULL;
+ TypeImpl *target_type;
+ TypeImpl *type;
+
+ if (!class) {
+ return NULL;
+ }
+
+ /* A simple fast path that can trigger a lot for leaf classes. */
+ type = class->type;
+ if (type->name == typename) {
+ return class;
+ }
- if (type->num_interfaces && type_is_ancestor(target_type, type_interface)) {
+ target_type = type_get_by_name(typename);
+ if (!target_type) {
+ /* target class type unknown, so fail the cast */
+ return NULL;
+ }
+
+ if (type->class->interfaces &&
+ type_is_ancestor(target_type, type_interface)) {
int found = 0;
GSList *i;
}
ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
- const char *typename)
+ const char *typename,
+ const char *file, int line,
+ const char *func)
{
- ObjectClass *ret = object_class_dynamic_cast(class, typename);
+ ObjectClass *ret;
- if (!ret) {
- fprintf(stderr, "Object %p is not an instance of type %s\n",
- class, typename);
+ trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
+ typename, file, line, func);
+
+#ifdef CONFIG_QOM_CAST_DEBUG
+ int i;
+
+ for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) {
+ if (class->cast_cache[i] == typename) {
+ ret = class;
+ goto out;
+ }
+ }
+#else
+ if (!class || !class->interfaces) {
+ return class;
+ }
+#endif
+
+ ret = object_class_dynamic_cast(class, typename);
+ if (!ret && class) {
+ fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
+ file, line, func, class, typename);
abort();
}
+#ifdef CONFIG_QOM_CAST_DEBUG
+ if (class && ret == class) {
+ for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
+ class->cast_cache[i - 1] = class->cast_cache[i];
+ }
+ class->cast_cache[i - 1] = typename;
+ }
+out:
+#endif
return ret;
}
return obj->class;
}
+bool object_class_is_abstract(ObjectClass *klass)
+{
+ return klass->type->abstract;
+}
+
const char *object_class_get_name(ObjectClass *klass)
{
return klass->type->name;
void object_ref(Object *obj)
{
- obj->ref++;
+ atomic_inc(&obj->ref);
}
void object_unref(Object *obj)
{
g_assert(obj->ref > 0);
- obj->ref--;
/* parent always holds a reference to its children */
- if (obj->ref == 0) {
+ if (atomic_fetch_dec(&obj->ref) == 1) {
object_finalize(obj);
}
}
ObjectPropertyRelease *release,
void *opaque, Error **errp)
{
- ObjectProperty *prop = g_malloc0(sizeof(*prop));
+ ObjectProperty *prop;
+
+ QTAILQ_FOREACH(prop, &obj->properties, node) {
+ if (strcmp(prop->name, name) == 0) {
+ error_setg(errp, "attempt to add duplicate property '%s'"
+ " to object (type '%s')", name,
+ object_get_typename(obj));
+ return;
+ }
+ }
+
+ prop = g_malloc0(sizeof(*prop));
prop->name = g_strdup(name);
prop->type = g_strdup(type);
return newpath;
}
-Object *object_resolve_path_component(Object *parent, gchar *part)
+Object *object_resolve_path_component(Object *parent, const gchar *part)
{
ObjectProperty *prop = object_property_find(parent, part, NULL);
if (prop == NULL) {
Object *object_resolve_path_type(const char *path, const char *typename,
bool *ambiguous)
{
- bool partial_path = true;
Object *obj;
gchar **parts;
parts = g_strsplit(path, "/", 0);
- if (parts == NULL || parts[0] == NULL) {
- g_strfreev(parts);
- return object_get_root();
- }
-
- if (strcmp(parts[0], "") == 0) {
- partial_path = false;
- }
+ assert(parts);
- if (partial_path) {
+ if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
if (ambiguous) {
*ambiguous = false;
}
projects / qemu.git / blobdiff