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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1779371488; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7C2Z2x5rN4Ack7PYt2FC2o/xoovv41BQKNbjaIQCsWI=; b=KxIf+It2+3vwZt3y+KGbUq7BgrmZqfGn8Q+GCKY17bgHWwBmTU6Cr0DmBDBgqdcCv84loJ QB+pC6oQiJlTaxTUWEMDIbKFijtJzCyJvEez/nr7xNDryypH4N7zojSziP2eGqPDIHbWjk yM3IWCQQ82oGHzQHNbiVZxH2OW4QkvE= X-MC-Unique: hrm-5nS7O4OFkk2soWs8lA-1 X-Mimecast-MFC-AGG-ID: hrm-5nS7O4OFkk2soWs8lA_1779371482 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Hanna Reitz , Pierrick Bouvier , Paolo Bonzini , Kevin Wolf , qemu-block@nongnu.org, John Snow , Thanos Makatos , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= , John Levon , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Cleber Rosa , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Subject: [PULL 19/29] qom: add trace events for object/property lifecycle Date: Thu, 21 May 2026 14:49:33 +0100 Message-ID: <20260521134943.1714527-20-berrange@redhat.com> In-Reply-To: <20260521134943.1714527-1-berrange@redhat.com> References: <20260521134943.1714527-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 8 X-Spam_score: 0.8 X-Spam_bar: / X-Spam_report: (0.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1779371852025158500 This adds tracing around object allocation & finalization, the addition & deletion of properties, and the addition & deletion of children. Tested-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Marc-Andr=C3=A9 Lureau Signed-off-by: Daniel P. Berrang=C3=A9 --- qom/object.c | 34 +++++++++++++++++++++++++++------- qom/trace-events | 12 ++++++++++-- 2 files changed, 37 insertions(+), 9 deletions(-) diff --git a/qom/object.c b/qom/object.c index dfdc5c8e42..4a15151c3b 100644 --- a/qom/object.c +++ b/qom/object.c @@ -594,6 +594,8 @@ static void object_property_del_all(Object *obj) object_property_iter_init(&iter, obj); while ((prop =3D object_property_iter_next(&iter)) !=3D NULL) { if (g_hash_table_add(done, prop)) { + trace_object_property_del(obj, obj->class->type->name, + prop->name, prop->opaque); if (prop->release) { prop->release(obj, prop->name, prop->opaque); released =3D true; @@ -612,10 +614,14 @@ static void object_property_del_child(Object *obj, Ob= ject *child) GHashTableIter iter; gpointer key, value; =20 + trace_object_property_del_child(obj, obj->class->type->name, + child, child->class->type->name); g_hash_table_iter_init(&iter, obj->properties); while (g_hash_table_iter_next(&iter, &key, &value)) { prop =3D value; if (object_property_is_child(prop) && prop->opaque =3D=3D child) { + trace_object_property_del(obj, obj->class->type->name, + prop->name, prop->opaque); if (prop->release) { prop->release(obj, prop->name, prop->opaque); prop->release =3D NULL; @@ -655,7 +661,7 @@ static void object_finalize(void *data) { Object *obj =3D data; TypeImpl *ti =3D obj->class->type; - + trace_object_finalize(obj, obj->class->type->name); object_property_del_all(obj); object_deinit(obj, ti); =20 @@ -705,6 +711,7 @@ static Object *object_new_with_type(Type type) object_initialize_with_type(obj, size, type); obj->free =3D obj_free; =20 + trace_object_new(obj, obj->class->type->name); return obj; } =20 @@ -835,8 +842,9 @@ Object *object_dynamic_cast(Object *obj, const char *ty= pename) 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); + trace_object_dynamic_cast_assert( + obj, obj ? obj->class->type->name : "(null)", + typename, file, line, func); =20 #ifdef CONFIG_QOM_CAST_DEBUG int i; @@ -926,8 +934,9 @@ ObjectClass *object_class_dynamic_cast_assert(ObjectCla= ss *class, { ObjectClass *ret; =20 - trace_object_class_dynamic_cast_assert(class ? class->type->name : "(n= ull)", - typename, file, line, func); + trace_object_class_dynamic_cast_assert( + class ? class->type->name : "(null)", + typename, file, line, func); =20 #ifdef CONFIG_QOM_CAST_DEBUG int i; @@ -1211,6 +1220,8 @@ object_property_try_add(Object *obj, const char *name= , const char *type, prop->release =3D release; prop->opaque =3D opaque; =20 + trace_object_property_add(obj, obj->class->type->name, + prop->name, prop->opaque); g_hash_table_insert(obj->properties, prop->name, prop); return prop; } @@ -1249,6 +1260,8 @@ object_class_property_add(ObjectClass *klass, prop->release =3D release; prop->opaque =3D opaque; =20 + trace_object_class_property_add(klass->type->name, prop->name, + prop->opaque); g_hash_table_insert(klass->properties, prop->name, prop); =20 return prop; @@ -1337,6 +1350,8 @@ void object_property_del(Object *obj, const char *nam= e) { ObjectProperty *prop =3D g_hash_table_lookup(obj->properties, name); =20 + trace_object_property_del(obj, obj->class->type->name, prop->name, + prop->opaque); if (prop->release) { prop->release(obj, name, prop->opaque); } @@ -1625,8 +1640,11 @@ int object_property_get_enum(Object *obj, const char= *name, bool object_property_parse(Object *obj, const char *name, const char *string, Error **errp) { - Visitor *v =3D string_input_visitor_new(string); - bool ok =3D object_property_set(obj, name, v, errp); + Visitor *v; + bool ok; + trace_object_property_parse(obj, obj->class->type->name, name, string); + v =3D string_input_visitor_new(string); + ok =3D object_property_set(obj, name, v, errp); =20 visit_free(v); return ok; @@ -1757,6 +1775,8 @@ object_property_try_add_child(Object *obj, const char= *name, g_autofree char *type =3D NULL; ObjectProperty *op; =20 + trace_object_property_add_child(obj, obj->class->type->name, name, + child, child->class->type->name); assert(!child->parent); =20 type =3D g_strdup_printf("child<%s>", object_get_typename(child)); diff --git a/qom/trace-events b/qom/trace-events index b2e9f4a712..44c63e72af 100644 --- a/qom/trace-events +++ b/qom/trace-events @@ -1,5 +1,13 @@ # See docs/devel/tracing.rst for syntax documentation. =20 # object.c -object_dynamic_cast_assert(const char *type, const char *target, const cha= r *file, int line, const char *func) "%s->%s (%s:%d:%s)" -object_class_dynamic_cast_assert(const char *type, const char *target, con= st char *file, int line, const char *func) "%s->%s (%s:%d:%s)" +object_dynamic_cast_assert(void *obj, const char *type, const char *target= , const char *file, int line, const char *func) "obj=3D%p type=3D%s->%s (%s= :%d:%s)" +object_finalize(void *obj, const char *type) "obj=3D%p type=3D%s" +object_new(void *obj, const char *type) "obj=3D%p type=3D%s" +object_property_add(void *obj, const char *type, const char *name, void *v= alue) "obj=3D%p type=3D%s name=3D%s value=3D%p" +object_property_add_child(void *obj, const char *type, const char *name, v= oid *child, const char *childtype) "obj=3D%p type=3D%s name=3D%s child=3D%p= child-type=3D%s" +object_property_del(void *obj, const char *type, const char *name, void *v= alue) "obj=3D%p type=3D%s name=3D%s value=3D%p" +object_property_del_child(void *obj, const char *type, void *child, const = char *childtype) "obj=3D%p type=3D%s child=3D%p child-type=3D%s" +object_property_parse(void *obj, const char *type, const char *name, const= char *value) "obj=3D%p type=3D%s prop=3D%s value=3D%s" +object_class_dynamic_cast_assert(const char *type, const char *target, con= st char *file, int line, const char *func) "type=3D%s->%s (%s:%d:%s)" +object_class_property_add(const char *type, const char *name, void *value)= "type=3D%s name=3D%s value=3D%p" --=20 2.54.0