qom: add property get/set wrappers for C types
Add wrappers that let you get/set properties using normal C data types. Reviewed-by: Anthony Liguori <anthony@aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
parent
9f5f135058
commit
7b7b7d18e4
@ -621,6 +621,76 @@ void object_unparent(Object *obj);
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void object_property_get(Object *obj, struct Visitor *v, const char *name,
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struct Error **errp);
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/**
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* object_property_set_str:
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* @value: the value to be written to the property
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* @name: the name of the property
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* @errp: returns an error if this function fails
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*
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* Writes a string value to a property.
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*/
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void object_property_set_str(Object *obj, const char *value,
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const char *name, struct Error **errp);
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/**
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* object_property_get_str:
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* @obj: the object
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* @name: the name of the property
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* @errp: returns an error if this function fails
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*
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* Returns: the value of the property, converted to a C string, or NULL if
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* an error occurs (including when the property value is not a string).
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* The caller should free the string.
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*/
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char *object_property_get_str(Object *obj, const char *name,
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struct Error **errp);
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/**
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* object_property_set_bool:
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* @value: the value to be written to the property
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* @name: the name of the property
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* @errp: returns an error if this function fails
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*
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* Writes a bool value to a property.
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*/
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void object_property_set_bool(Object *obj, bool value,
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const char *name, struct Error **errp);
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/**
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* object_property_get_bool:
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* @obj: the object
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* @name: the name of the property
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* @errp: returns an error if this function fails
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*
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* Returns: the value of the property, converted to a boolean, or NULL if
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* an error occurs (including when the property value is not a bool).
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*/
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bool object_property_get_bool(Object *obj, const char *name,
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struct Error **errp);
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/**
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* object_property_set_int:
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* @value: the value to be written to the property
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* @name: the name of the property
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* @errp: returns an error if this function fails
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*
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* Writes an integer value to a property.
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*/
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void object_property_set_int(Object *obj, int64_t value,
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const char *name, struct Error **errp);
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/**
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* object_property_get_int:
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* @obj: the object
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* @name: the name of the property
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* @errp: returns an error if this function fails
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*
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* Returns: the value of the property, converted to an integer, or NULL if
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* an error occurs (including when the property value is not an integer).
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*/
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int64_t object_property_get_int(Object *obj, const char *name,
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struct Error **errp);
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/**
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* object_property_set:
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* @obj: the object
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113
qom/object.c
113
qom/object.c
@ -14,6 +14,14 @@
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#include "qemu-common.h"
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#include "qapi/qapi-visit-core.h"
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/* TODO: replace QObject with a simpler visitor to avoid a dependency
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* of the QOM core on QObject? */
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#include "qemu/qom-qobject.h"
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#include "qobject.h"
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#include "qbool.h"
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#include "qint.h"
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#include "qstring.h"
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#define MAX_INTERFACES 32
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typedef struct InterfaceImpl InterfaceImpl;
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@ -657,6 +665,99 @@ void object_property_set(Object *obj, Visitor *v, const char *name,
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}
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}
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void object_property_set_str(Object *obj, const char *value,
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const char *name, Error **errp)
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{
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QString *qstr = qstring_from_str(value);
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object_property_set_qobject(obj, QOBJECT(qstr), name, errp);
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QDECREF(qstr);
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}
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char *object_property_get_str(Object *obj, const char *name,
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Error **errp)
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{
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QObject *ret = object_property_get_qobject(obj, name, errp);
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QString *qstring;
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char *retval;
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if (!ret) {
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return NULL;
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}
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qstring = qobject_to_qstring(ret);
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if (!qstring) {
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
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retval = NULL;
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} else {
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retval = g_strdup(qstring_get_str(qstring));
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}
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QDECREF(qstring);
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return retval;
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}
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void object_property_set_bool(Object *obj, bool value,
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const char *name, Error **errp)
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{
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QBool *qbool = qbool_from_int(value);
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object_property_set_qobject(obj, QOBJECT(qbool), name, errp);
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QDECREF(qbool);
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}
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bool object_property_get_bool(Object *obj, const char *name,
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Error **errp)
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{
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QObject *ret = object_property_get_qobject(obj, name, errp);
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QBool *qbool;
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bool retval;
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if (!ret) {
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return false;
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}
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qbool = qobject_to_qbool(ret);
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if (!qbool) {
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
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retval = false;
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} else {
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retval = qbool_get_int(qbool);
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}
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QDECREF(qbool);
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return retval;
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}
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void object_property_set_int(Object *obj, int64_t value,
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const char *name, Error **errp)
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{
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QInt *qint = qint_from_int(value);
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object_property_set_qobject(obj, QOBJECT(qint), name, errp);
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QDECREF(qint);
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}
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int64_t object_property_get_int(Object *obj, const char *name,
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Error **errp)
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{
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QObject *ret = object_property_get_qobject(obj, name, errp);
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QInt *qint;
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int64_t retval;
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if (!ret) {
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return -1;
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}
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qint = qobject_to_qint(ret);
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if (!qint) {
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error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
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retval = -1;
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} else {
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retval = qint_get_int(qint);
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}
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QDECREF(qint);
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return retval;
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}
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const char *object_property_get_type(Object *obj, const char *name, Error **errp)
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{
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ObjectProperty *prop = object_property_find(obj, name);
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@ -938,7 +1039,7 @@ typedef struct StringProperty
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void (*set)(Object *, const char *, Error **);
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} StringProperty;
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static void object_property_get_str(Object *obj, Visitor *v, void *opaque,
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static void property_get_str(Object *obj, Visitor *v, void *opaque,
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const char *name, Error **errp)
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{
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StringProperty *prop = opaque;
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@ -951,7 +1052,7 @@ static void object_property_get_str(Object *obj, Visitor *v, void *opaque,
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}
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}
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static void object_property_set_str(Object *obj, Visitor *v, void *opaque,
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static void property_set_str(Object *obj, Visitor *v, void *opaque,
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const char *name, Error **errp)
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{
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StringProperty *prop = opaque;
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@ -968,7 +1069,7 @@ static void object_property_set_str(Object *obj, Visitor *v, void *opaque,
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g_free(value);
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}
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static void object_property_release_str(Object *obj, const char *name,
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static void property_release_str(Object *obj, const char *name,
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void *opaque)
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{
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StringProperty *prop = opaque;
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@ -986,8 +1087,8 @@ void object_property_add_str(Object *obj, const char *name,
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prop->set = set;
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object_property_add(obj, name, "string",
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get ? object_property_get_str : NULL,
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set ? object_property_set_str : NULL,
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object_property_release_str,
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get ? property_get_str : NULL,
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set ? property_set_str : NULL,
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property_release_str,
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prop, errp);
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}
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